CN107706546A - A kind of multiband antenna of parasitic couplings feed - Google Patents
A kind of multiband antenna of parasitic couplings feed Download PDFInfo
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- CN107706546A CN107706546A CN201710854742.4A CN201710854742A CN107706546A CN 107706546 A CN107706546 A CN 107706546A CN 201710854742 A CN201710854742 A CN 201710854742A CN 107706546 A CN107706546 A CN 107706546A
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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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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Abstract
The present invention provides a kind of multiband antenna of parasitic couplings feed, is fed using coupled capacitor, three a period of time are fed respectively, so as to form multiband antenna or broad-band antenna；The antenna mainly includes Rectangular Enclosure with Participating Media substrate, microstrip-fed line, Capacitance Coupled feed structure, symmetrical parasitic a period of time and, scopiform resonance a period of time, and be printed on the partial earthing face below Rectangular Enclosure with Participating Media substrate；By adjusting electric capacity feed structure and the gap between a period of time, reach preferable impedance matching, designed antenna is met multiband and broadband demand；A kind of multiband antenna of parasitic couplings feed designed by the present invention has relatively low section, less size, can may be mounted in mobile hand-held device according to working frequency range demand flexible design, realize high quality communication.
Description
Technical field
The present invention relates to a kind of antenna, more particularly to a kind of multiband antenna of parasitic couplings feed.
Background technology
As development communication technologies are rapid, mobile communication business comes into huge numbers of families, and the life to people is brought
Huge change, particularly radio individual voice and digital service, greatly change the life of people.Therefore, people are to moving
The demand of dynamic communication equipment is growing day by day, and existing mobile terminal integrates various functions.In order to meet the function of characteristic
Demand, it usually needs common antenna is as the conversion equipment for launching and receiving energy.And present communication equipment be integrated with it is multiple
Communication system, it is desirable to multiple antenna is integrated in the inside of equipment, often increases the volume of equipment, increases equipment cost,
Also it is unfavorable for the EMC Design of system.In recent years, small volume, section be low, bandwidth, channel radio multi-functional, cost is low
Letter terminal is favored by people and market, therefore the design of antenna is faced with many challenges.In recent years, multiband antenna is ground
Study carefully as one of hot issue of academia and industrial quarters, scholar both domestic and external and engineers devise various planes
Broad-band antenna and multiband antenna, mainly using microstrip-fed, aperture-coupled feed, coplanar wave guide feedback and coaxial feed side
Formula.These antenna majority is realized by the way of sandwich construction or cutting.The antenna of such feed structure excitation is generally also
With good electrical characteristic, but its sandwich construction adds the loss of manufacturing cost and surface wave, and structure is relatively multiple
It is miscellaneous, and be not easy to debug in Practical Project.In addition, in the mobile communication equipment used at present, larger band is generally required
Width, is sometimes also required to multiple resonance frequency bands, and this design can not only meet various protocols communication requirement, and the system of equipment
Cause relatively low, and the design of antenna is easy to realize with system integrated, is advantageous to the electromagnetic Compatibility Design of system.So can
By improving feed structure, using multiple resonator designs, so as to widen impedance bandwidth, multiple frequency ranges can also be produced, designed
High performance multiband and all channel antenna.
Marco Simone et al. proposed a kind of multiband aerial of microstrip lines cutler feed in 2014, and
It can apply in wireless LAN communication, the antenna can obtain larger radiant power.But the antenna employs double-deck knot
Structure, volume is larger, is unfavorable for engineering debugging and design of system integration.In addition, Andrea Michel et al. were set in 2016
A kind of new broadband microstrip antenna has been counted, multiple monopole antennas have been printed on same compact medium substrate, use is micro-
Band line is fed, but its size is big, and can not flexible design according to demand.
The content of the invention
The invention aims to provide a kind of multiband antenna of parasitic couplings feed, fed and tied using Capacitance Coupled
Structure is fed to three a period of time respectively, and uses Capacitance Coupled to feed, and is advantageous to the impedance bandwidth of broadening antenna, can be according to reality
Demand realizes frequency-adjustable, meets the needs of working frequency range flexible design.
The object of the present invention is achieved like this：Microstrip-fed line, electricity are provided with one end face of Rectangular Enclosure with Participating Media substrate
Hold couple feed structure, resonance a period of time, two symmetrical parasitic a period of time, microstrip-fed line is by Capacitance Coupled feed structure by signal
It is coupled to resonance a period of time, on two symmetrical parasitic a period of time, two symmetrical center line mirrors of the parasitic a period of time along Rectangular Enclosure with Participating Media substrate
As being symmetrical arranged, microstrip-fed line, Capacitance Coupled feed structure, resonance a period of time were located between two symmetrical parasitic a period of time, micro-strip
Feed line, Capacitance Coupled feed structure were located above resonance a period of time, another end face setting unit ground connection of Rectangular Enclosure with Participating Media substrate
Face.
Present invention additionally comprises some such architectural features：
1. described resonance a period of time is using the scopiform structure of the tooth form of Length discrepancy, two symmetrical parasitic a period of time are R shapes respectively
Structure and anti-R shapes structure.
2. described resonance a period of time is E type structures, and the increment of the E shape structures in harmonic wave a period of time is set down, and two are symmetrically posted
Raw a period of time is L-shaped structure and backward L-shaped structure respectively.
3. the Capacitance Coupled feed structure is L-shaped structure.
4. the Capacitance Coupled feed structure is loop configuration, and Capacitance Coupled feed structure is located at microstrip-fed line harmony
Shake between a period of time.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is fed using microstrip feed line by Capacitance Coupled
Structure couples a signal to three a period of time, by adjusting Capacitance Coupled feed structure and the gap size between a period of time, just can realize
Preferable impedance matching, meet multiband and broadband demand.The feed structure can also use resistance, inductance or electric capacity etc.
Discrete component is adjusted on feed structure, is achieved in broader bandwidth, also allows for carrying out integration with microwave front-end
Integrated design.
Compared to existing most broad-band antennas, frequently with aperture-coupled feed structure, sandwich construction is presented in Antenna Design
Or the structure that radiating element is parasitic, the volume and size of antenna are larger, and manufacturing cost is of a relatively high.The present invention uses electric capacity
Couple feed structure, using individual layer planar design, by capacitive coupling structure, realize bandwidth Design, at the same can according to demand,
Realize that multiband designs, the antenna section is low, and size is small, and cost is low.
Brief description of the drawings
Fig. 1 is the top view of the antenna of case study on implementation one of the present invention；
Fig. 2 is the side view of the antenna of case study on implementation one of the present invention；
Fig. 3 is the top view of the antenna of case study on implementation two of the present invention；
Fig. 4 is the top view of the antenna of case study on implementation three of the present invention；
Fig. 5 is the top view of the antenna of case study on implementation four of the present invention.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
The present invention devises a kind of multiband antenna of parasitic couplings feed, and designed antenna is will by microstrip feed line
Energy transmission gives parasitic coupling capacitance structure, then couple electromagnetic energy is delivered into R type symmetrical matrix by parasitic coupling capacitance structure
Son and scopiform resonance a period of time.The microstrip-fed line 102 of designed antenna is by Capacitance Coupled feed structure 103 to three a period of time
Fed, namely using microstrip-fed and Capacitance Coupled feed transformational structure, i.e., be converted into Capacitance Coupled feedback by microstrip-fed
Electric structure, three a period of time are fed.Microstrip-fed line 102 is connected with SMA inner wire, SMA outer conductor and medium
The partial earthing face connection of base plate bottom.
Further detailed description is specifically done to invention below in conjunction with the accompanying drawings：
Case study on implementation one：As depicted in figs. 1 and 2, antenna of the invention mainly includes Rectangular Enclosure with Participating Media base to designed antenna
Plate 101, microstrip-fed line 102, Capacitance Coupled feed structure 103, symmetrical parasitic a period of time 104 and 105 be respectively anti-R shapes structure and
R shape structures, scopiform resonance a period of time 106, and it is printed on the partial earthing face 107 below Rectangular Enclosure with Participating Media substrate 101；Pass through adjustment
Gap between electric capacity feed structure 103 and a period of time, it can effectively adjust the resonant frequency and bandwidth of antenna.It is poised for battle parasitic array
Sub 104 and 105 speculars use the tooth-shape structure of Length discrepancy in the center line of medium substrate, scopiform resonance a period of time 106.Micro-strip
Feeder line 102 is connected with the inner wire of SMA connectors, and SMA outer conductors are connected with partial earthing face 107, and microstrip feed line passes through electricity
Hold coupled structure and transfer energy to three a period of time.Microstrip-fed line 102 is by Capacitance Coupled feed structure 103 to three a period of time
Fed, by adjusting the gap between Capacitance Coupled feed structure 103 and a period of time, reach preferable impedance matching, can be with
Designed antenna is set to meet multiband and broadband demand.Scopiform resonance a period of time is respectively adopted in three a period of time of designed antenna
106 are carried out with symmetrical parasitic a period of time 104 and 105, microstrip-fed line 102 by Capacitance Coupled feed structure 103 to three a period of time
Feed；Symmetrical parasitic a period of time 104 and 105 of the antenna forms symmetrical R shapes structure, and scopiform resonance a period of time 106 passes through micro- with feed
Band line 102, symmetrical parasitic a period of time 104 and 105 couple, and form wideband resonance.The main radiator of designed antenna uses Length discrepancy
Scopiform resonance a period of time, while introduce a pair symmetrically parasitic a period of time as time radiating element, be easy to individually set towards opposite R types
Meter forms band Wide antenna or multiband antenna.
Case study on implementation two：Of the invention is embodiment 2 as shown in figure 3, the antenna designed by the implementation case mainly includes
Rectangular Enclosure with Participating Media substrate 201, microstrip-fed line 202, Capacitance Coupled feed structure 203, symmetrical parasitic a period of time 204 and 205 be respectively
Backward L-shaped structure and L-shaped structure, E shape resonance a period of time 206, and it is printed on the partial earthing face below Rectangular Enclosure with Participating Media substrate 201；
By adjusting the gap between electric capacity feed structure 203 and a period of time, the resonant frequency and bandwidth of antenna can be effectively adjusted.It is right
The parasitic specular of a period of time 204 and 205 of battle array in the center line of medium substrate, can by adjusting the length and width in L-shaped a period of time,
Adjust resonance frequency band and resonant bandwidth.E shape resonance a period of time 206 uses E shape structures, is advantageous to the bandwidth of broadening antenna.Antenna
Resonant frequency, the length in L-shaped a period of time can be calculated according to 1/4 wave resonance, the size in E shape resonance a period of time can be rule of thumb
Obtain, by adjusting the resonance length in each a period of time, designed antenna is met required working frequency and bandwidth.
Case study on implementation three：Of the invention is embodiment 3 as shown in figure 4, the implementation case is on the basis of case study on implementation 2
Fed using L-shaped Capacitance Coupled, designed antenna mainly includes Rectangular Enclosure with Participating Media substrate 301, microstrip-fed line 302, L-shaped electric capacity
Couple feed structure 303, symmetrical parasitic a period of time 304 and 305 respectively backward L-shaped structure and L-shaped structure, E shape resonance a period of time 306,
And it is printed on the partial earthing face below Rectangular Enclosure with Participating Media substrate 301；Microstrip-fed line 302 and L-shaped Capacitance Coupled feed structure
303 form couple feed structures, couple feed it is strong and weak can by adjust L-shaped Capacitance Coupled feed structure 303 length and
Width is realized.Further, it is also possible to adjust L-shaped Capacitance Coupled feed structure 303 and symmetrical parasitic a period of time 304 and 305 and E shapes are humorous
The coupling gap to shake between a period of time 306, adjustment coupling is strong and weak, reaches stable impedance matching.
Case study on implementation four：As shown in figure 5, the implementation case is to be presented on the basis of case study on implementation 2 and 3 using annular coupling
Electric structure, designed antenna mainly include Rectangular Enclosure with Participating Media substrate 401, microstrip-fed line 402, annular capacitor couple feed structure
403, symmetrical parasitic a period of time 404 and 405 respectively backward L-shaped structure and L-shaped structure, E shape resonance a period of time 406, and it is printed on square
Partial earthing face below shape medium substrate 401；Microstrip-fed line 402 uses L-shaped feed structure, and feedback is coupled with annular capacitor
Electric structure 403 forms couple feed structure, and the strong and weak of couple feed can be by adjusting the L-shaped horizontal sides of microstrip-fed line 402
Coupling gap and coupling length between annular capacitor couple feed structure 403 are realized.Further, it is also possible to adjust annular capacitor
Couple feed structure 403 and symmetrical coupling gap between parasitic a period of time 404 and 405 and E shape resonance a period of time 406, adjust coupling
Power is closed, reaches stable impedance matching.
Parasitic couplings a period of time that the present invention uses can also use bent structure, F shape structures, T-shaped structure etc., can subtract
The size of miniature antenna, is easy to and actual system carries out Integrated design.Used Capacitance Coupled feed structure can pass through tune
The distance between whole feed structure and a period of time, adjust electric capacity so that designed antenna can meet close coupling feed or
Weak coupling is fed, according to the actual requirements the antenna of design.The present invention is a kind of multiband antenna of parasitic couplings feed, micro-
Ribbon feeder is fed by capacitive coupling structure, by adjusting coupled capacitor structure and gap between a period of time, obtains good impedance match,
Realize multiband or wideband requirements.
To sum up, the invention discloses a kind of multiband antenna of parasitic couplings feed, fed using coupled capacitor, it is right respectively
Three a period of time are fed, so as to form multiband antenna or broad-band antenna；The antenna mainly includes Rectangular Enclosure with Participating Media substrate, micro-
Band feed line, Capacitance Coupled feed structure, symmetrical parasitic a period of time and, scopiform resonance a period of time, and be printed on Rectangular Enclosure with Participating Media substrate
Following partial earthing face；By adjusting electric capacity feed structure and the gap between a period of time, reach preferable impedance matching, make institute
The antenna of design meets multiband and broadband demand；A kind of multiband antenna tool of parasitic couplings feed designed by the present invention
There is relatively low section, less size, mobile hand-held device can be may be mounted at according to working frequency range demand flexible design
In, realize high quality communication.
Claims (5)
- A kind of 1. multiband antenna of parasitic couplings feed, it is characterised in that：It is provided with one end face of Rectangular Enclosure with Participating Media substrate Microstrip-fed line, Capacitance Coupled feed structure, resonance a period of time, two symmetrical parasitic a period of time, microstrip-fed line passes through Capacitance Coupled Feed structure couples a signal to resonance a period of time, on two symmetrical parasitic a period of time, and two symmetrical parasitic a period of time are along Rectangular Enclosure with Participating Media The center line specular of substrate is set, and microstrip-fed line, Capacitance Coupled feed structure, resonance a period of time are symmetrical parasitic positioned at two Between a period of time, microstrip-fed line, Capacitance Coupled feed structure were located above resonance a period of time, another end face of Rectangular Enclosure with Participating Media substrate Setting unit ground plane.
- A kind of 2. multiband antenna of parasitic couplings feed according to claim 1, it is characterised in that：Described resonance a period of time It is that two symmetrical parasitic a period of time are R shapes structure and anti-R shapes structure respectively using the scopiform structure of the tooth form of Length discrepancy.
- A kind of 3. multiband antenna of parasitic couplings feed according to claim 1, it is characterised in that：Described resonance a period of time It is E type structures, and the increment of the E shape structures in harmonic wave a period of time is set down, two symmetrical parasitic a period of time are L-shaped structure respectively and anti- L-shaped structure.
- A kind of 4. multiband antenna of parasitic couplings feed according to claim 3, it is characterised in that：The Capacitance Coupled Feed structure is L-shaped structure.
- A kind of 5. multiband antenna of parasitic couplings feed according to claim 3, it is characterised in that：The Capacitance Coupled Feed structure is loop configuration, and Capacitance Coupled feed structure is between microstrip-fed line and resonance a period of time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854742.4A CN107706546B (en) | 2017-09-20 | 2017-09-20 | Multi-band antenna with parasitic coupling feed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854742.4A CN107706546B (en) | 2017-09-20 | 2017-09-20 | Multi-band antenna with parasitic coupling feed |
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| CN107706546A true CN107706546A (en) | 2018-02-16 |
| CN107706546B CN107706546B (en) | 2021-02-12 |
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| CN201710854742.4A Active CN107706546B (en) | 2017-09-20 | 2017-09-20 | Multi-band antenna with parasitic coupling feed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777355A (en) * | 2018-04-17 | 2018-11-09 | 哈尔滨工程大学 | A kind of low section broad-band antenna |
| CN108832271A (en) * | 2018-05-25 | 2018-11-16 | 哈尔滨工程大学 | A kind of symmetrical Multi-Function Antenna |
| CN109066078A (en) * | 2018-08-08 | 2018-12-21 | 南京信息职业技术学院 | Multi-frequency-band back cavity type butterfly antenna used on metal platform |
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| CN107706546B (en) | 2021-02-12 |
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