CN109167187B - Antenna tuning matrix unit, radiation stray control device and method and mobile terminal - Google Patents
Antenna tuning matrix unit, radiation stray control device and method and mobile terminal Download PDFInfo
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- CN109167187B CN109167187B CN201810898227.0A CN201810898227A CN109167187B CN 109167187 B CN109167187 B CN 109167187B CN 201810898227 A CN201810898227 A CN 201810898227A CN 109167187 B CN109167187 B CN 109167187B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides an antenna tuning matrix unit, a radiation stray control device, a radiation stray control method and a mobile terminal. In the embodiment of the invention, the resonant circuit is arranged in the antenna tuning matrix unit, and can reflect the resonant wave corresponding to the resonant frequency when the resonant circuit resonates, so that the radiation efficiency generated when the antenna radiation unit works is reduced, the resonant wave cannot be radiated out, and the effect of reducing radiation stray is achieved.
Description
Technical Field
The invention relates to the technical field of mobile terminals, in particular to an antenna tuning matrix unit, a radiation stray control device, a radiation stray control method and a mobile terminal.
Background
At present, the middle frame of the mobile terminal is mostly adopted as an antenna by the mobile terminal with the all-metal middle frame and the rear cover, and signals are transmitted through the antenna.
However, due to the parasitic effect of the distribution parameters of each device in the mobile terminal, etc., there may be a problem that the Radiated Stray (RSE) does not meet the requirement of the RSE standard authentication when the mobile terminal transmits signals through the antenna.
Disclosure of Invention
The embodiment of the invention provides an antenna tuning matrix unit, a radiation stray control device, a radiation stray control method and a mobile terminal, and aims to solve the problem that radiation stray exceeds the standard when the mobile terminal transmits signals.
In order to solve the above technical problem, an embodiment of the present invention provides an antenna tuning matrix unit, including:
the antenna tuning matrix unit is connected with the antenna radiation unit, a resonance circuit is arranged in the antenna tuning matrix unit, and the resonance frequency band of the resonance circuit and the working frequency band of the antenna radiation unit meet a preset relation.
In a first aspect, an embodiment of the present invention further provides a spurious radiation control apparatus, where the apparatus includes any one of the above antenna tuning matrix units, and the apparatus further includes:
the determining module is used for determining the current working frequency of the antenna radiation unit;
and the control module is used for controlling the resonant circuit to be in a passage state if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation.
In a second aspect, an embodiment of the present invention further provides a radiation stray control method, which is applied to any one of the above radiation stray control apparatuses, where the method includes:
determining the current working frequency of the antenna radiation unit;
and if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation, controlling the resonant circuit to be in a passage state.
In a third aspect, an embodiment of the present invention further provides a mobile terminal, including any one of the above radiation stray control apparatuses.
In a fourth aspect, an embodiment of the present invention further provides a mobile terminal, including a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the radiation stray control method.
In a fifth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the foregoing radiation stray control method.
In the embodiment of the invention, the resonant circuit is arranged in the antenna tuning matrix unit, and the resonant frequency of the resonant circuit and the working frequency of the antenna radiation unit meet the preset relationship. Therefore, in the embodiment of the invention, after the resonant circuit meeting the preset relation with the working frequency of the antenna radiation unit is arranged in the antenna tuning matrix unit, the radiation stray of the mobile terminal when the working frequency exceeds the standard can be reduced by the operation of the resonant circuit.
Drawings
Fig. 1 is a block diagram of an antenna tuning matrix unit according to a first embodiment of the present invention;
FIG. 2 is a return loss diagram of a mobile terminal not entering a resonant circuit according to an embodiment of the present invention;
fig. 3 is a return loss diagram of an access resonant circuit of a mobile terminal according to an embodiment of the present invention;
FIG. 4 is a block diagram of a radiation stray control apparatus according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating steps of a method for controlling stray radiation according to a third embodiment of the present invention;
fig. 6 is a block diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ EXAMPLES one ]
Referring to fig. 1, a block diagram of an antenna tuning matrix unit 20 according to an embodiment of the present invention is shown.
In the embodiment of the present invention, the antenna tuning matrix unit 20 is connected to the antenna radiation unit 30, a resonant circuit is disposed in the antenna tuning matrix unit, and a resonant frequency of the resonant circuit and a working frequency of the antenna radiation unit satisfy a preset relationship.
The antenna tuning matrix unit 20 and the antenna radiation unit 30 of the embodiment of the present invention may be applied to a mobile terminal, and the mobile terminal may specifically be a mobile phone, a computer, an electronic reader, and the like, which is not specifically limited in this embodiment of the present invention.
In the embodiment of the present invention, through a lot of experiments and studies, the inventor finds that the reason why the radiated spurious emission exceeds the standard exists when the mobile terminal transmits signals through the antenna is as follows: an 1/4-wavelength monopole antenna is generally adopted in a mobile terminal, and the antenna of the type is combined with the arrangement of each capacitive device in the mobile terminal, so that if the fundamental resonant frequency of the mobile terminal operation is f0, a parasitic resonance is generally generated near the frequency of 3f0, which may become a triple parasitic resonance, and the triple parasitic resonance occurs, so that the single-frequency antenna design has a dual-frequency antenna radiation effect. As shown in fig. 2, the return loss of a low frequency antenna is shown with frequency on the abscissa and return loss gain on the ordinate. Specifically, the GSM (global system for mobile communications) 900 antenna operates at 915MHz (m 4), and has a high radiation efficiency of about 6.327db at 2.745GHz (m 5). If the performances of terminal devices and the like of the mobile terminal are poor and the margin of the conduction third harmonic of the mobile terminal board level is insufficient, the possibility that the third harmonic radiation stray of the GSM900 exceeds the standard is greatly increased after the antenna is carried, so that the situation that the radiation stray exceeds the standard often occurs in the mobile terminal.
Based on the above findings, in the embodiments of the present invention, a resonant circuit may be adaptively set in the antenna tuning matrix module according to the operating frequency of the antenna radiation unit, and the resonant frequency of the resonant circuit and the operating frequency of the antenna radiation unit satisfy a preset relationship.
In a specific application, the resonant frequency of the resonant circuit may be a multiple of the operating frequency of the antenna radiating element; the resonant frequency of the resonant circuit can also be other relations of the working frequency adaptation of the antenna radiation unit, so that the resonant wave generated when the antenna radiation unit works at the working frequency can be reflected when the resonant circuit resonates, the radiation efficiency of the antenna radiation unit when the antenna radiation unit works at the working frequency is reduced, the resonant wave cannot be radiated, and the effect of reducing radiation stray is achieved.
As a preferred solution of the embodiment of the present invention, a resonant frequency of the resonant circuit is adapted to an excessive operating frequency of the antenna radiation unit, where the excessive operating frequency is an operating frequency at which a radiation stray exceeds a preset threshold when the antenna radiation unit operates.
In the embodiment of the present invention, the condition of the radiation stray when the mobile terminal operates at each frequency can be tested in advance, and the operating frequency of the radiation stray exceeding the preset threshold value when the antenna radiation unit 30 operates is determined as the standard exceeding operating frequency, and a resonant circuit adapted to an out-of-standard operating frequency is provided in the antenna tuning matrix unit 20, the radiation efficiency of the antenna radiation unit 30 of the mobile terminal at the frequency where the radiation stray exceeds the standard can be reflected by the resonance circuit, such that, when the antenna is operated at an operating frequency (e.g., fundamental), in addition to radiation efficiency at the operating frequency (e.g., fundamental), other harmonics (such as the third harmonic of three times of the fundamental wave) have no radiation efficiency basically, so that even if the third harmonic component exists in the signal fed into the antenna, the signal cannot be radiated out basically, and the purpose of improving the radiation stray performance of the whole machine is achieved.
As a preferred solution of the embodiment of the present invention, the antenna tuning matrix unit 20 may include at least one frequency band matching circuit, as shown in fig. 1, may include a first frequency band matching circuit 22, a second frequency band matching circuit 23, and a third frequency band matching circuit 23; the resonant circuit 21 in the antenna tuning matrix unit 20 may include an inductor and a capacitor, where the inductor and the capacitor are connected in series, and one end of the resonant circuit 21 is connected to one end of the frequency band matching unit corresponding to the resonant circuit 21; the other end of the resonant circuit 21 is connected to a ground switch 25.
In specific application, the resonant circuit and the frequency band matching circuit can be correspondingly arranged, each frequency band matching circuit is correspondingly provided with a matched resonant circuit, the grounding switch 25 can be a double-pole double-throw switch, and one end of the resonant circuit is connected with one end of the frequency band matching circuit corresponding to the resonant circuit 21; the other end of the resonant circuit is connected with a grounding switch, and the other end of the frequency band matching circuit corresponding to the resonant circuit is also connected with the grounding switch. When the mobile terminal works at the working frequency corresponding to one of the frequency band matching circuits, the frequency band matching circuit and the resonant circuit correspondingly arranged with the frequency band matching circuit are grounded through the grounding switch 25, so that the resonant circuit can effectively reduce radiation stray when the mobile terminal works in the frequency band matching circuit.
It can be understood that, when the mobile terminal operates, the frequency band matching circuit, other frequency band matching circuits, and the resonant circuit corresponding to the other frequency band matching circuits, which are used when the mobile terminal operates, may be set to be in an open state through the ground switch, so as to avoid interference to the normal operation of the mobile terminal.
In the embodiment of the invention, the L (inductance) C (capacitance) resonance circuit corresponding to the overproof working frequency is added into the antenna tuning matrix unit to effectively improve the radiation stray performance of the antenna, and the antenna tuning matrix unit is an effective scheme with small change.
As a preferred scheme of the embodiment of the present invention, the resonant circuit may include an inductor L and a capacitor C, and the resonant circuit with adaptive resonant frequency may be correspondingly set according to the difference of the standard-exceeding operating frequency of the mobile terminal. Specifically, in an ac circuit including an inductor and a capacitor, the voltage across the circuit and the current are generally out of phase, and if the circuit parameters or the power supply frequency are adjusted so that the current and the power supply voltage are in phase, the circuit becomes resistive, and the operating state of the circuit is said to be resonant. In a series circuit formed by an inductor and a capacitor, when capacitive reactance XC is equal to inductive reactance XL, namely XC is XL, the phase of voltage U in the circuit is the same as that of current I, the circuit presents pure resistance, and the phenomenon is called series resonance. When the circuit is in series resonance, the total impedance in the circuit is at a minimum and the current will reach a maximum. In series resonance, the resonance frequency f is:
it can be understood that when the resonant circuit is arranged in the antenna tuning matrix unit 200, one resonant circuit can be correspondingly arranged at each operating frequency at which the radiation stray exceeds the standard, so as to reduce the radiation stray to the maximum extent; a resonant circuit capable of reducing partial radiation stray of a plurality of working frequencies with radiation stray exceeding the standard can be arranged in the plurality of working frequencies with radiation stray exceeding the standard so as to reduce the complexity of circuits in the antenna tuning matrix unit; those skilled in the art can set the application according to the actual application scenario, and the embodiment of the present invention is not limited in this respect.
As a preferable solution of the embodiment of the present invention, the resonant frequency of the resonant circuit is a preset multiple of the standard-exceeding operating frequency of the antenna radiation unit.
In the embodiment of the present invention, the preset multiple may be determined according to a detection condition that the radiation stray exceeds the standard when the antenna radiation unit of the mobile terminal operates, for example, when the antenna radiation unit operates at the operating frequency F1 through detection, and the radiation stray of the mobile terminal exceeds the standard at a frequency 2 times of the frequency F1, the operating frequency F1 may be determined as the standard exceeding operating frequency, the preset multiple is set to 2, and the resonant circuit resonates at the frequency 2 times of the frequency F1. It can be understood that a person skilled in the art may set a corresponding preset multiple according to an actual application scenario, and the preset multiple is not specifically limited in the embodiment of the present invention.
As a preferable solution of the embodiment of the present invention, a resonant frequency of the resonant circuit is 3 times an excessive operating frequency of the antenna radiation unit.
In the embodiment of the invention, according to a great amount of experiments and researches of an inventor, the probability that radiation stray exceeds the standard is high due to the generation of triple parasitic resonance in the mobile terminal, as a better implementation scheme, a resonant circuit working at triple exceeding working frequency can be arranged in an antenna tuning matrix unit in advance, the effect of improving the radiation stray index of the mobile terminal can be achieved, the specific working frequency of the resonant circuit is not required to be determined after the mobile terminal is tested one by one, and the difficulty of arranging the resonant circuit can be greatly reduced.
In a specific application, as shown in fig. 3, for example, when an antenna of a mobile terminal operates in a GSM900, a triple-frequency resonant circuit that resonates in the GSM900 is set in advance in an antenna tuning matrix unit of the mobile terminal, when the antenna of the mobile terminal operates in the GSM900, the resonant circuit is conducted to ground, so that the return loss of the antenna changes to be shown by a line 2 in fig. 3, and a line 1 in fig. 3 shows the return loss of the antenna when the resonant circuit is not set in the mobile terminal, it can be seen that the antenna has substantially no radiation efficiency (about 0.059db) at the triple-frequency of the GSM900, and has no radiation efficiency, and even if a triple-harmonic component exists in a signal fed to the antenna, the antenna cannot be radiated substantially, thereby achieving the purpose of improving the radiation stray performance of the whole machine. In fig. 3, the point M1 indicates the return loss of the antenna at the fundamental wave, and the return loss of M2 is significantly smaller than that of M3, that is, the antenna is substantially totally reflected at the frequency tripling position of the fundamental wave, and no energy can be radiated, so as to achieve the purpose of improving the radiation stray index of the mobile terminal from the angle of the antenna.
In the embodiment of the invention, the resonant circuit is arranged in the antenna tuning matrix unit, and the resonant frequency of the resonant circuit and the working frequency of the antenna radiation unit meet the preset relationship. Therefore, in the embodiment of the invention, after the resonant circuit meeting the preset relation with the working frequency of the antenna radiation unit is arranged in the antenna tuning matrix unit, the radiation stray of the mobile terminal when the working frequency exceeds the standard can be reduced by the operation of the resonant circuit.
[ example two ]
Referring to FIG. 4, a block diagram of a radiation stray control apparatus 100 according to an embodiment of the present invention is shown.
In an embodiment of the present invention, the radiation stray control apparatus includes any one of the antenna tuning matrix units according to the first embodiment.
In a specific application, the radiation stray control device may be a mobile terminal or a control chip of the mobile terminal, which is not specifically limited in this embodiment of the present invention.
The radiation stray control apparatus further includes:
a determining module 110, configured to determine a current operating frequency of the antenna radiation unit;
the control module 120 is configured to control the resonant circuit to be in a pass state if the resonant frequency of the resonant circuit and the current operating frequency satisfy the preset relationship.
The working principle of the determination module 110 and the control module 120 in the radiation stray control device is as follows:
a determining module 110, configured to determine a current operating frequency of the antenna radiation unit.
In the embodiment of the present invention, the mobile terminal may communicate through the base station provided by the mobile, unicom, telecommunication, and other operators, and each operator corresponds to a different communication frequency, so that the determining module 110 may determine the current operating frequency of the antenna radiation unit according to the service of the operator used by the mobile terminal.
It can be understood that, according to an actual application scenario, a person skilled in the art may also set a testing device in the mobile terminal to test the working frequency of the mobile terminal when communicating with the outside, so as to determine the current working frequency of the antenna radiation unit.
The control module 120 is configured to control the resonant circuit to be in a pass state if the resonant frequency of the resonant circuit and the current operating frequency satisfy the preset relationship.
In the embodiment of the present invention, if the antenna radiation unit operates at the current operating frequency and generates the radiation stray at the resonant frequency of the resonant circuit, the previous operating frequency may be considered to be adapted to the resonant frequency of the resonant circuit, and the resonant circuit may be controlled to be in a pass state, so as to reduce the radiation stray generated when the antenna radiation unit operates at the current operating frequency.
As a preferred scheme of the embodiment of the present invention, the resonant frequency of the resonant circuit may be adapted to an excessive operating frequency of the antenna radiation unit, where the excessive operating frequency is an operating frequency at which the radiation stray exceeds a preset threshold when the antenna radiation unit operates. In this case, if the current operating frequency is adapted to the standard-exceeding operating frequency, for example, the current operating frequency is the same as or close to the standard-exceeding operating frequency, it can be shown that when the antenna of the mobile terminal transmits a signal at the current operating frequency, a phenomenon that the radiation spurious exceeds the standard occurs, and for the phenomenon, a resonant circuit adapted to the operating frequency is already arranged in the antenna tuning matrix unit, so that the resonant circuit can be controlled by the control module 120 to be in a pass state, and the resonant circuit can basically eliminate the radiation efficiency of the mobile terminal antenna such as the third harmonic generated at the operating frequency, and improve the radiation spurious index of the mobile terminal. It can be understood that when the mobile terminal antenna transmits a signal, there may also be resonance at other frequency doubling positions of the fundamental wave, which may cause an excessive radiation spurious phenomenon of the mobile terminal, and then a resonant circuit corresponding to the other frequency doubling positions may be set in the antenna tuning matrix unit, so as to improve the radiation spurious index at the other frequency doubling positions.
In a specific application, a plurality of resonant circuits may be further disposed in the mobile terminal, only the resonant circuit with the resonant frequency adapted to the working frequency of the mobile terminal is set to be in the on state, and the resonant circuit unmatched to the current working frequency is set to be in the off state through a switch or the like, so as to avoid power consumption or other possible interference to the mobile terminal caused by the unmatched resonant circuit.
As a preferable solution of the embodiment of the present invention, the control module 120 includes: and the first control submodule is used for controlling the grounding switch corresponding to the resonant circuit to be closed if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation, so that the resonant circuit is in a closed state.
In the embodiment of the invention, the enabling pin of the grounding switch can be accessed to the first control submodule of the mobile terminal, and the enabling pin of the grounding switch is controlled by the first control submodule, so that the grounding switch is in a closed state or an open state. In specific application, when the grounding switch is in a disconnected state, the resonant circuit can be in an open circuit state, and interference on normal work of other frequencies of the mobile terminal is avoided; when the grounding switch is in a pass state, the resonant circuit works at a resonant frequency corresponding to the current working frequency of the mobile terminal, and radiation stray generated by the mobile terminal at the resonant frequency can be improved.
In specific application, the mobile terminal shown in fig. 3 operates in GSM900, and the standard exceeding operating frequency of the operating frequency is 915MHz for example, and after the LC resonant circuit is introduced, the operating frequency of the fundamental wave and the operating bandwidth of the antenna are not affected while the radiation spurious index of the antenna to the third harmonic of GSM900 is improved. The scheme is effective in improving the radiation stray of the whole mobile terminal.
As a preferred solution of the embodiment of the present invention, the radiation stray control apparatus may further include a signal feed-in unit, where the signal feed-in unit is connected to an input end of the antenna tuning matrix unit; and the transmitting module is used for transmitting a transmitting signal to the antenna tuning matrix unit through the signal feed-in unit when the signal is transmitted.
In the embodiment of the present invention, the resonant circuit adapted to the current operating frequency of the mobile terminal is in a pass state, when the transmitting module transmits a signal, the transmitting signal may be transmitted to the antenna tuning matrix unit 20 through the signal feed-in unit, and the resonant circuit in the antenna tuning matrix unit 20 may short-circuit the resonant signal of the frequency to the ground at a frequency where the radiation spurious generated by the mobile terminal exceeds the standard, so that the radiation efficiency of the resonant signal is almost totally reflected, and the transmitted signal transmitted by the antenna radiator module does not have the phenomenon that the radiation spurious exceeds the standard.
In the embodiment of the invention, the resonant circuit is arranged in the antenna tuning matrix unit, and the resonant frequency of the resonant circuit and the working frequency of the antenna radiation unit meet the preset relationship. Therefore, in the embodiment of the invention, after the resonant circuit meeting the preset relation with the working frequency of the antenna radiation unit is arranged in the antenna tuning matrix unit, the radiation stray of the mobile terminal when the working frequency exceeds the standard can be reduced by the operation of the resonant circuit.
[ EXAMPLE III ]
Referring to fig. 5, a flow chart of a radiation stray control method in an embodiment of the present invention is shown. The method is applied to the radiation stray control device, and comprises the following steps:
step 301: determining the current working frequency of the antenna radiation unit;
step 302: and if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation, controlling the resonant circuit to be in a passage state.
In the embodiment of the invention, the resonant circuit is arranged in the antenna tuning matrix unit, and the resonant frequency of the resonant circuit and the working frequency of the antenna radiation unit meet the preset relationship. Therefore, in the embodiment of the invention, after the resonant circuit meeting the preset relation with the working frequency of the antenna radiation unit is arranged in the antenna tuning matrix unit, the radiation stray of the mobile terminal when the working frequency exceeds the standard can be reduced by the operation of the resonant circuit. It should be noted that the foregoing method embodiments are described as a series of acts or combinations for simplicity in explanation, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts or acts described, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
The above-mentioned radiation stray control method can implement each process implemented by each module in the apparatus embodiments of fig. 1 to fig. 4, and is not described herein again to avoid repetition.
Fig. 6 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention.
The mobile terminal 500 includes, but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, and a power supply 511. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 6 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
Wherein, the processor 510 is configured to determine a current operating frequency of the antenna radiation unit; and if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation, controlling the resonant circuit to be in a passage state.
In the embodiment of the invention, the resonant circuit is arranged in the antenna tuning matrix unit, and the resonant frequency of the resonant circuit and the working frequency of the antenna radiation unit meet the preset relationship. Therefore, in the embodiment of the invention, after the resonant circuit meeting the preset relation with the working frequency of the antenna radiation unit is arranged in the antenna tuning matrix unit, the radiation stray of the mobile terminal when the working frequency exceeds the standard can be reduced by the operation of the resonant circuit.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 501 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 510; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 501 can also communicate with a network and other devices through a wireless communication system.
The mobile terminal provides the user with wireless broadband internet access through the network module 502, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 503 may convert audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output as sound. Also, the audio output unit 503 may also provide audio output related to a specific function performed by the mobile terminal 500 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.
The input unit 504 is used to receive an audio or video signal. The input Unit 504 may include a Graphics Processing Unit (GPU) 5041 and a microphone 5042, and the Graphics processor 5041 processes image data of still pictures or video obtained by an image capturing mobile terminal (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 506. The image frames processed by the graphic processor 5041 may be stored in the memory 509 (or other storage medium) or transmitted via the radio frequency unit 501 or the network module 502. The microphone 5042 may receive sounds and may be capable of processing such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 501 in case of the phone call mode.
The mobile terminal 500 also includes at least one sensor 505, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 5061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 5061 and/or a backlight when the mobile terminal 500 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 505 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 506 is used to display information input by the user or information provided to the user. The Display unit 506 may include a Display panel 5061, and the Display panel 5061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 507 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 507 includes a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 5071 using a finger, stylus, or any suitable object or attachment). The touch panel 5071 may include two parts of a touch detection mobile terminal and a touch controller. The touch detection mobile terminal detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing mobile terminal, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, receives a command from the processor 510, and executes the command. In addition, the touch panel 5071 may be implemented in various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 5071, the user input unit 507 may include other input devices 5072. In particular, other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
Further, the touch panel 5071 may be overlaid on the display panel 5061, and when the touch panel 5071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 510 to determine the type of the touch event, and then the processor 510 provides a corresponding visual output on the display panel 5061 according to the type of the touch event. Although in fig. 6, the touch panel 5071 and the display panel 5061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 5071 and the display panel 5061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 508 is an interface through which an external mobile terminal is connected to the mobile terminal 500. For example, the external mobile terminal may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting the mobile terminal having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 508 may be used to receive input (e.g., data information, power, etc.) from an external mobile terminal and transmit the received input to one or more elements within the mobile terminal 500 or may be used to transmit data between the mobile terminal 500 and the external mobile terminal.
The memory 509 may be used to store software programs as well as various data. The memory 509 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 509 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The processor 510 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 509 and calling data stored in the memory 509, thereby performing overall monitoring of the mobile terminal. Processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 510.
The mobile terminal 500 may further include a power supply 511 (e.g., a battery) for supplying power to various components, and preferably, the power supply 511 may be logically connected to the processor 510 via a power management system, so that functions of managing charging, discharging, and power consumption are performed via the power management system.
In addition, the mobile terminal 500 includes some functional modules that are not shown, and thus, are not described in detail herein.
Preferably, an embodiment of the present invention further provides a mobile terminal, which includes a processor 510, a memory 509, and a computer program stored in the memory 509 and capable of running on the processor 510, where the computer program is executed by the processor 510 to implement each process of the above-mentioned embodiments of the radiation stray control method, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned embodiment of the radiation stray control method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or mobile terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or mobile terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or mobile terminal that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. An antenna tuning matrix unit is characterized in that the antenna tuning matrix unit is connected with an antenna radiation unit, a resonance circuit is arranged in the antenna tuning matrix unit, and the resonance frequency of the resonance circuit and the working frequency of the antenna radiation unit meet a preset relationship;
wherein, the resonant frequency of the resonant circuit and the working frequency of the antenna radiation unit satisfying a preset relationship comprises:
the resonant frequency of the resonant circuit is adapted to the standard-exceeding working frequency of the antenna radiation unit, wherein the standard-exceeding working frequency is the working frequency of radiation stray exceeding a preset threshold value when the antenna radiation unit works; the resonant frequency of the resonant circuit is a preset multiple of the standard exceeding working frequency of the antenna radiation unit, and the preset multiple is determined according to the detection condition that the radiation stray exceeds the standard when the antenna radiation unit works.
2. The antenna tuning matrix element of claim 1, wherein the resonant circuit has a resonant frequency that is 3 times an out-of-limits operating frequency of the antenna radiating element.
3. The antenna tuning matrix element of any of claims 1-2, wherein the resonant circuit comprises: the inductor and the capacitor are connected in series.
4. The antenna tuning matrix element of claim 3, further comprising:
at least one frequency band matching circuit;
one end of the resonant circuit is connected with one end of the frequency band matching circuit corresponding to the resonant circuit;
and the other end of the resonant circuit is connected with the grounding switch.
5. A radiated spurious control device comprising the antenna tuning matrix unit of any one of claims 1 to 4, said device further comprising:
the determining module is used for determining the current working frequency of the antenna radiation unit;
and the control module is used for controlling the resonant circuit to be in a passage state if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation.
6. The apparatus of claim 5, wherein the control module comprises:
and the first control submodule is used for controlling the grounding switch corresponding to the resonant circuit to be closed if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation, so that the resonant circuit is in a closed state.
7. The apparatus of claim 5, further comprising:
the signal feed-in unit is connected with the input end of the antenna tuning matrix unit;
and the transmitting module is used for transmitting a transmitting signal to the antenna tuning matrix unit through the signal feed-in unit when the signal is transmitted.
8. A radiation stray control method applied to the radiation stray control apparatus according to any one of claims 5 to 7, the method comprising:
determining the current working frequency of the antenna radiation unit;
and if the resonant frequency of the resonant circuit and the current working frequency meet the preset relation, controlling the resonant circuit to be in a passage state.
9. A mobile terminal, characterized in that it comprises an antenna tuning matrix element according to any of claims 1 to 4.
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| CN111585054B (en) * | 2019-02-18 | 2021-11-05 | 荣耀终端有限公司 | Tuning device, antenna device and terminal equipment |
| CN111029772B (en) * | 2019-12-24 | 2021-10-22 | 维沃移动通信有限公司 | Antenna circuit, electronic device and method for adjusting antenna performance |
| CN114843753B (en) * | 2022-05-11 | 2024-07-09 | Oppo广东移动通信有限公司 | Antenna device, control method thereof and electronic equipment |
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| CN107566554A (en) * | 2017-08-10 | 2018-01-09 | 北京小米移动软件有限公司 | Antenna, antenna tuning method, apparatus, mobile terminal and storage medium |
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| US8644197B2 (en) * | 2008-12-24 | 2014-02-04 | Hollinworth Fund, L.L.C. | RF front-end module and antenna systems |
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| EP2816733A1 (en) * | 2013-06-07 | 2014-12-24 | Panasonic Corporation | Transmit-receive switching device and high frequency switch |
| CN107566554A (en) * | 2017-08-10 | 2018-01-09 | 北京小米移动软件有限公司 | Antenna, antenna tuning method, apparatus, mobile terminal and storage medium |
| CN108111180A (en) * | 2017-12-14 | 2018-06-01 | 广东欧珀移动通信有限公司 | Tuning switch control circuit, antenna assembly and mobile terminal |
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