CN216485439U - Antenna detection circuit - Google Patents
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- CN216485439U CN216485439U CN202121392955.8U CN202121392955U CN216485439U CN 216485439 U CN216485439 U CN 216485439U CN 202121392955 U CN202121392955 U CN 202121392955U CN 216485439 U CN216485439 U CN 216485439U
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Abstract
The utility model discloses an antenna detection circuit, which comprises an open circuit detection circuit, a power supply protection circuit and a single chip microcomputer controller, wherein the circuit is connected with an antenna power supply port through a short circuit detection circuit so as to detect the short circuit state of an antenna; the open circuit detection circuit is connected with the antenna power supply port to detect the open circuit state of the antenna; the power supply protection circuit is connected with the antenna power supply port to provide a power supply for the antenna, and when the antenna is short-circuited, the power supply is short-circuited; the single chip microcomputer controller is respectively connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit so as to obtain the short circuit state and the open circuit state of the antenna and carry out power supply control on the power supply protection circuit. Therefore, the fault state of the antenna can be displayed by acquiring the fault state of the antenna, so that the antenna can be conveniently repaired and maintained, and when short-circuit faults occur, the short-circuit faults are automatically protected, and dangers such as fire caused by overcurrent are avoided.
Description
Technical Field
The utility model relates to the technical field of communication, in particular to an antenna detection circuit.
Background
The main function of the automobile diagnosis product is to read the vehicle fault code of the vehicle through an On Board Diagnostics (OBD) interface. When the automobile diagnosis product is used, the automobile diagnosis product is inserted into an automobile through the OBD connector, and after a user is connected with the automobile diagnosis box through the Bluetooth by using an application program, the user can enter diagnosis software to read fault information and data streams in corresponding modules, and sends acquired information to a remote server in a wireless mode.
In the prior art, for convenience in installation, a wireless communication antenna is generally connected with a wireless communication module in a communication manner through a mounting base. Install wireless communication module on the mount pad through the mount pad, can appear antenna drop, short circuit or phenomenon such as open a way in the use to lead to unable through wireless communication mode and remote server communication, the user is under the unknown specific circumstances, may think that the automotive diagnosis product has been bad, brings inconvenience for the user.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to provide an antenna detection circuit.
To achieve the above object, an embodiment of the present invention provides an antenna detection circuit, including:
the short circuit detection circuit is connected with the antenna power supply port and is used for detecting the short circuit state of the antenna;
the open circuit detection circuit is connected with the antenna power supply port and is used for detecting the open circuit state of the antenna;
the power supply protection circuit is connected with the antenna power supply port and used for introducing an antenna power supply to provide a power supply for the antenna and carrying out short-circuit protection on the power supply when the antenna is in short circuit;
and the single chip microcomputer controller is respectively connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit so as to acquire the short circuit state and the open circuit state of the antenna and carry out power supply control on the power supply protection circuit.
Further, according to an embodiment of the present invention, the antenna detection circuit further includes a radio frequency signal isolation circuit, and the short circuit detection circuit, the open circuit detection circuit, and the power supply protection circuit are respectively connected to the antenna power supply port through the radio frequency signal isolation circuit to isolate the radio frequency signal on the antenna power supply port.
Further, according to an embodiment of the present invention, the radio frequency signal isolation circuit includes: the antenna comprises a first inductor L6, one end of the first inductor L6 is connected with the antenna power supply port, and the other end of the first inductor L6 is connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit respectively.
Further, according to an embodiment of the present invention, the radio frequency signal isolation circuit includes: and one end of the first capacitor C108 is connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit, and the other end of the first capacitor C108 is connected with a reference ground.
Further, according to an embodiment of the present invention, the short detection circuit includes: and one end of the first resistor R137 is connected with the antenna power supply port, and the other end of the first resistor R137 is connected with a detection end of the single chip microcomputer controller.
Further, according to an embodiment of the present invention, the power supply protection circuit includes: the antenna comprises a first triode Q36, wherein an emitting electrode of the first triode Q36 is connected with an antenna power supply through a second resistor R100, a collector electrode of the first triode Q36 is connected with one end of a third resistor R138, the other end of the resistor R138 is connected with an antenna power supply port, and a base electrode of the first triode Q36 is connected with the other end of the first resistor R137.
Further, according to an embodiment of the present invention, the power supply protection circuit further includes:
a second transistor Q39, a base of the first transistor Q36 is connected to the other end of the first resistor R137 through the second transistor Q39, a collector of the second transistor Q39 is connected to a base of the first transistor Q36 through a fourth resistor R141, an emitter of the second transistor Q39 is connected to a reference ground, and a base of the second transistor Q39 is connected to the other end of the first resistor R137 through a fourth resistor R140;
a first diode D8, the anode of the first diode D8 is connected to the antenna power supply port, and the cathode of the first diode D8 is connected to the collector of the second transistor Q39.
Further, according to an embodiment of the present invention, the open circuit detection circuit includes:
a third transistor Q37, an emitter of the third transistor Q37 is connected to the antenna power supply port, a collector of the third transistor Q37 is connected to a reference ground through a fourth resistor R145, and a collector of the third transistor Q37 is further connected to a voltage detection terminal of the mcu;
a fourth triode Q38, an emitter of the fourth triode Q38 is connected to the one end of the third resistor R138 through a fifth resistor R139, a collector of the fourth triode Q38 is connected to the reference ground through a sixth resistor R146, a base of the fourth triode Q38 is connected to a base of the third triode Q37, and a base of the fourth triode Q38 is further connected to a far-from-reference-ground end of the sixth resistor R146.
Further, according to an embodiment of the present invention, the open circuit detection circuit further includes a seventh resistor R144, and the base of the fourth transistor Q38 is further connected to the terminal of the sixth resistor R146 away from the reference ground through the seventh resistor R144.
Further, according to an embodiment of the present invention, the open circuit detection circuit further includes an eighth resistor R143, and a collector of the third transistor Q37 is further connected to a voltage detection end of the mcu through the eighth resistor R143.
The antenna detection circuit provided by the embodiment of the utility model is connected with the antenna power supply port through the short circuit detection circuit so as to detect the short circuit state of the antenna; the open circuit detection circuit is connected with the antenna power supply port to detect the open circuit state of the antenna; the power supply protection circuit is connected with the antenna power supply port to provide a power supply for the antenna and perform short-circuit protection on the power supply when the antenna is in short circuit; the single chip microcomputer controller is respectively connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit so as to obtain the short circuit state and the open circuit state of the antenna and carry out power supply control on the power supply protection circuit. Therefore, the single chip microcomputer controller can acquire the fault state of the antenna through the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit, and the single chip microcomputer controller can display the acquired fault state of the antenna through the display device, so that the antenna can be conveniently repaired and maintained. And when short-circuit faults occur, the power supply protection circuit automatically protects the short-circuit faults, and dangers such as fire and the like caused by overcurrent are avoided.
Drawings
Fig. 1 is a block diagram of an antenna detection circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of another antenna detection circuit according to an embodiment of the present invention;
fig. 3 is a circuit structure of an antenna detection circuit according to an embodiment of the present invention;
fig. 4 is a circuit structure diagram of another antenna detection circuit according to an embodiment of the present invention.
Reference numerals:
an antenna 101;
an antenna interface 1011;
a radio frequency signal isolation circuit 102;
a short-circuit detection circuit 103;
an open circuit detection circuit 104;
a power supply protection circuit 105;
a single chip controller 106.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and 3, an embodiment of the present invention provides an antenna detection circuit, including: the antenna comprises a short circuit detection circuit 103, an open circuit detection circuit 104, a power supply protection circuit 105 and a single chip microcomputer controller 106, wherein the short circuit detection circuit 103 is connected with a power supply port of the antenna 101 so as to detect the short circuit state of the antenna 101; as shown in fig. 1 and 3, the short circuit detection circuit 103 is disposed between the power supply port of the antenna 101 and the single chip controller 106, so that a short circuit signal of the antenna 101 can be transmitted to the single chip controller 106.
The open circuit detection circuit 104 is connected to a power supply port of the antenna 101 to detect an open circuit state of the antenna 101; as shown in fig. 1 and 3, the open circuit detection circuit 104 is disposed between the power supply port of the antenna 101 and the single chip controller, so that an open circuit signal of the antenna 101 can be transmitted to the single chip controller 106.
The power supply protection circuit 105 is connected with a power supply port of the antenna 101 so as to introduce an antenna power supply to provide the antenna with the power supply, and when the antenna 101 is in short circuit, the power supply is protected from short circuit; as shown in fig. 1 and 3, the power supply protection circuit 105 is connected to an antenna power supply GPS _ VDD to introduce an antenna power supply on the one hand, so as to provide a power supply for the antenna 101; on the other hand, when the antenna 101 is short-circuited, the power supply for the antenna 101 can be stopped, so that the phenomenon that the circuit is burnt out due to heat generation caused by overlarge current after the antenna 101 is short-circuited can be avoided.
The single chip microcomputer controller 106 is connected to the short circuit detection circuit 103, the open circuit detection circuit 104, and the power supply protection circuit 105, respectively, to obtain the short circuit and open circuit states of the antenna 101, and to control the power supply of the power supply protection circuit 105. The single chip microcomputer controller 106 can output the short circuit state and the open circuit state of the antenna 101 through a display device, so as to facilitate maintenance of the antenna 101. Conveniently, the power supply of the power supply protection circuit 105 can be controlled, and the power supply protection circuit 105 can be controlled to continue to supply power to the antenna 101 after the antenna 101 is recovered to be normal. On the one hand, the state of the antenna 101 can be detected, and on the other hand, the power supply of the antenna 101 can be controlled.
The antenna detection circuit provided by the embodiment of the utility model is connected with the power supply port of the antenna 101 through the short-circuit detection circuit 103 so as to detect the short-circuit state of the antenna 101; the open circuit detection circuit 104 is connected to the power supply port of the antenna 101 to detect the open circuit state of the antenna 101; the power supply protection circuit 105 is connected with a power supply port of the antenna 101 to provide a power supply for the antenna 101, and when the antenna 101 is short-circuited, the power supply is short-circuited and protected; the single chip microcomputer controller 106 is connected to the short circuit detection circuit 103, the open circuit detection circuit 104, and the power supply protection circuit 105, respectively, to obtain the short circuit and open circuit states of the antenna 101, and to perform power supply control on the power supply protection circuit 105. So, single chip microcomputer controller can acquire antenna 101's fault status through short circuit detection circuitry, open circuit detection circuitry and power supply protection circuit, and single chip microcomputer controller can show antenna 101 fault status to in antenna 101's fault repair and maintenance, and when short circuit fault appears, through power supply protection circuit to short circuit fault automatic protection, avoid overflowing to produce dangers such as fire.
Referring to fig. 3, the short detection circuit 103 includes: one end of the first resistor R137 is connected with the power supply port of the antenna 101, and the other end of the first resistor R137 is connected with a detection end of the single chip microcomputer controller 106. As shown in fig. 3, the first resistor R137 is disposed between the power supply port of the antenna 101 and the single chip, so that when the antenna 101 is short-circuited, the level at the power supply port of the antenna 101 can be lowered, and after the single chip controller 106 detects that the level of the first resistor R137 is converted from a high level to a low level, the antenna 101 and the short-circuit detection circuit 103 having the short-circuit phenomenon can be obtained relatively simply and at low cost.
Referring to fig. 2 and 4, the antenna detection circuit further includes a radio frequency signal isolation circuit 102, and the short circuit detection circuit 103, the open circuit detection circuit 104, and the power supply protection circuit 105 are respectively connected to the power supply port of the antenna 101 through the radio frequency signal isolation circuit 102 to isolate radio frequency signals on the power supply interface of the antenna 101. As shown in fig. 4, the radio frequency signal isolation circuit 102 includes: one end of the first inductor L6 is connected to the power supply port of the antenna 101, and the other end of the first inductor L6 is connected to the short circuit detection circuit 103, the open circuit detection circuit 104, and the power supply protection circuit 105, respectively. The first inductor L6 can isolate the rf signal of the antenna 101, so as to prevent the rf signal from entering the short circuit detection circuit 103, the open circuit detection circuit 104 and the power supply protection circuit 105 to generate interference.
Referring to fig. 4, the rf signal isolation circuit 102 further includes: and one end of the first capacitor C108 is connected to the short-circuit detection circuit 103, the open-circuit detection circuit 104 and the power supply protection circuit 105, and the other end of the first capacitor C108 is connected to a reference ground. The first capacitor C108 is connected in parallel to the common terminal of the short-circuit detection circuit 103, the open-circuit detection circuit 104 and the power supply protection circuit 105, so that the voltage at the common terminal of the short-circuit detection circuit 103, the open-circuit detection circuit 104 and the power supply protection circuit 105 can be further stabilized, and some interference signals of high voltage pulses can be filtered, so that the power supply at the common terminal of the short-circuit detection circuit 103, the open-circuit detection circuit 104 and the power supply protection circuit 105 can be kept stable.
Referring to fig. 3 and 4, the power supply protection circuit 105 includes: first triode Q36, the projecting pole of first triode Q36 passes through second resistance R100 and is connected with antenna 101 power supply GPS _ VCC, the collecting electrode of first triode Q36 with the one end of third resistance R138 is connected, the other end of resistance (R138) with antenna 101 power supply port is connected, the base of first triode Q36 with first resistance R137 the other end is connected. As shown in fig. 3 and 4, the first transistor Q36 is used as a switch for controlling the conduction of the power supply, the power supply of the antenna 101 is introduced from the emitter of the first transistor Q36 and is output through the collector of the first transistor Q36 to supply the power supply to the antenna 101, the base of the first transistor Q36 is connected to the other end (the short detection end of the single chip microcomputer) of the first resistor R137, and on the one hand, the output level signal can be controlled by the single chip microcomputer controller 106 to control the conduction or the cut-off of the first transistor Q36. On the other hand, the base of the first transistor Q36 is simultaneously connected to the other end of the first resistor R137. Thus, after the first transistor Q36 is normally powered, the feedback voltage can provide the power supply voltage for the first transistor Q36 to turn on through the first resistor R137. The short circuit detection end of singlechip can carry out the short circuit detection like this, and simultaneously and when the short circuit appears, first triode Q36 can be fed back to first resistance R137's low-voltage, can cut off first triode Q36 simultaneously and turn off, can play fine short-circuit protection like this.
Referring to fig. 3 and 4, the power supply protection circuit 105 further includes: a second transistor Q39 and a first diode D8, wherein the base of the first transistor Q36 is connected to the other end of the first resistor R137 through the second transistor Q39, the collector of the second transistor Q39 is connected to the base of the first transistor Q36 through a fourth resistor R141, the emitter of the second transistor Q39 is connected to the reference ground, and the base of the second transistor Q39 is connected to the other end of the first resistor R137 through a fourth resistor R140; the anode of the first diode D8 is connected with the power supply port of the antenna 101, and the cathode of the first diode D8 is connected with the collector of the second triode Q39. The second transistor Q39 is disposed between the first transistor Q36 and the first resistor R137, and the first diode D8 provides a bias power supply for the transistor, so that the on and off time of the first transistor Q36 can be increased. Especially in case of a short circuit, the power supply to the antenna 101 is quickly switched off.
Referring to fig. 3 and 4, the open circuit detection circuit 104 includes: a third triode Q37 and a fourth triode Q38, wherein an emitter of the third triode Q37 is connected to the power supply port of the antenna 101, a collector of the third triode Q37 is connected to a reference ground through a fourth resistor R145, and a collector of the third triode Q37 is further connected to a voltage detection end of the mcu 106; an emitter of the fourth triode Q38 is connected to the other end of the third resistor R138 through a fifth resistor R139, a collector of the fourth triode Q38 is connected to a reference ground through a sixth resistor R146, a base of the fourth triode Q38 is connected to a base of the third triode Q37, and a base of the fourth triode Q38 is further connected to a terminal, far from the reference ground, of the sixth resistor R146. As shown in fig. 3 and 4, a mirror circuit is formed between the third transistor Q37 and the fourth transistor Q38, and when the antenna 101 is opened, the mirror circuit is equivalent to an open circuit of the divided voltage between the third resistor R138 and the load of the antenna 101. At this time, the voltage across the third resistor R138 increases, so that the current between the emitter and the collector of the fourth transistor Q38 increases. Due to the mirror image relationship, the current of the fourth resistor R145 is increased, the voltage of the connection end of the fourth resistor R145 and the collector of the fourth triode Q38 is increased, the voltage of the open-circuit voltage sampling end PA8_ ANT1_0 is also increased, and the open-circuit phenomenon of the antenna 101 can be detected by acquiring the change of the voltage value through the single chip microcomputer controller 106. The open circuit detection circuit 104 operates stably, and can detect the open circuit state of the antenna 101 well.
Referring to fig. 3 and 4, the open circuit detection circuit 104 further includes a seventh resistor R144, and the base of the fourth transistor Q38 is further connected to the end of the sixth resistor R146 away from the reference ground through the seventh resistor R144. The seventh resistor R144 and the sixth resistor R146 can constitute a current limiting resistor to limit the current of the mirror circuit. So that the current is in the set current range.
Referring to fig. 3 and 4, the open circuit detection circuit 104 further includes an eighth resistor R143, and a collector of the third transistor Q37 is further connected to a voltage detection terminal of the mcu 106 through the eighth resistor R143. The voltage of the open-circuit voltage sampling end of the fourth resistor R145 can be introduced into the mcu 106 through the eighth resistor R143.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent arrangements may be substituted for some of the features of the embodiments described above. All equivalent structures made by using the contents of the specification and the attached drawings of the utility model can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the utility model.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. An antenna detection circuit, comprising:
the short circuit detection circuit is connected with the antenna power supply port and is used for detecting the short circuit state of the antenna;
the open circuit detection circuit is connected with the antenna power supply port and is used for detecting the open circuit state of the antenna;
the power supply protection circuit is connected with the antenna power supply port and used for introducing an antenna power supply to provide the antenna with the power supply and protecting the power supply from short circuit when the antenna is short-circuited;
and the single chip microcomputer controller is respectively connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit so as to acquire the short circuit state and the open circuit state of the antenna and carry out power supply control on the power supply protection circuit.
2. The antenna detection circuit of claim 1, further comprising a radio frequency signal isolation circuit, wherein the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit are respectively connected to the antenna power supply port through the radio frequency signal isolation circuit to isolate the radio frequency signal at the antenna power supply port.
3. The antenna detection circuit of claim 2, wherein the radio frequency signal isolation circuit comprises: the antenna power supply circuit comprises a first inductor (L6), one end of the first inductor (L6) is connected with the antenna power supply port, and the other end of the first inductor (L6) is connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit respectively.
4. The antenna detection circuit of claim 3, wherein the radio frequency signal isolation circuit comprises: and one end of the first capacitor (C108) is connected with the short circuit detection circuit, the open circuit detection circuit and the power supply protection circuit, and the other end of the first capacitor (C108) is connected with the reference ground.
5. The antenna detection circuit of claim 2, wherein the short detection circuit comprises: one end of the first resistor (R137) is connected with the antenna power supply port, and the other end of the first resistor (R137) is connected with one detection end of the single chip microcomputer controller.
6. The antenna detection circuit of claim 5, wherein the supply protection circuit comprises: the antenna power supply comprises a first triode (Q36), wherein an emitting electrode of the first triode (Q36) is connected with the antenna power supply through a second resistor (R100), a collecting electrode of the first triode (Q36) is connected with one end of a third resistor (R138), the other end of the third resistor (R138) is connected with an antenna power supply port, and a base electrode of the first triode (Q36) is connected with the other end of the first resistor (R137).
7. The antenna detection circuit of claim 6, wherein the supply protection circuit further comprises:
a second transistor (Q39), wherein the base of the first transistor (Q36) is connected to the other end of the first resistor (R137) through the second transistor (Q39), the collector of the second transistor (Q39) is connected to the base of the first transistor (Q36) through a fourth resistor (R141), the emitter of the second transistor (Q39) is connected to ground, and the base of the second transistor (Q39) is connected to the other end of the first resistor (R137) through a fifth resistor (R140);
a first diode (D8), an anode of the first diode (D8) is connected with the antenna power supply port, and a cathode of the first diode (D8) is connected with a collector of the second triode (Q39).
8. The antenna detection circuit of claim 7, wherein the open circuit detection circuit comprises:
a third transistor (Q37), an emitter of the third transistor (Q37) is connected to the antenna power supply port, a collector of the third transistor (Q37) is connected to a reference ground through a sixth resistor (R145), and a collector of the third transistor (Q37) is further connected to a voltage detection terminal of the mcu;
a fourth triode (Q38), the emitter of fourth triode (Q38) pass through fifth resistance (R139) with third resistance (R138) the one end is connected, the collector of fourth triode (Q38) passes through sixth resistance (R146) and is connected with the reference ground, the base of fourth triode (Q38) with the base of third triode (Q37) is connected, the base of fourth triode (Q38) still with keeping away from of sixth resistance (R146) and referring to the ground end and connecting.
9. The antenna detection circuit of claim 8, wherein the open circuit detection circuit further comprises a seventh resistor (R144), and the base of the fourth transistor (Q38) is further connected to the reference terminal of the sixth resistor (R146) through the seventh resistor (R144).
10. The antenna detection circuit of claim 8, wherein the open circuit detection circuit further comprises an eighth resistor (R143), and the collector of the third transistor (Q37) is further connected to a voltage detection terminal of the one-chip microcomputer controller through the eighth resistor (R143).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121392955.8U CN216485439U (en) | 2021-06-22 | 2021-06-22 | Antenna detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121392955.8U CN216485439U (en) | 2021-06-22 | 2021-06-22 | Antenna detection circuit |
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| CN216485439U true CN216485439U (en) | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060963A (en) * | 2022-08-17 | 2022-09-16 | 天津七六四通信导航技术有限公司 | Circuit for detecting current voltage of radio frequency front end of receiver and implementation method |
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2021
- 2021-06-22 CN CN202121392955.8U patent/CN216485439U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060963A (en) * | 2022-08-17 | 2022-09-16 | 天津七六四通信导航技术有限公司 | Circuit for detecting current voltage of radio frequency front end of receiver and implementation method |
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