CN205752538U - A kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole antenna - Google Patents
A kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole antenna Download PDFInfo
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- CN205752538U CN205752538U CN201620708037.4U CN201620708037U CN205752538U CN 205752538 U CN205752538 U CN 205752538U CN 201620708037 U CN201620708037 U CN 201620708037U CN 205752538 U CN205752538 U CN 205752538U
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- wave guide
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- circular ring
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Abstract
The utility model discloses a kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole antenna, be made up of symmetric double circular ring structure radiating element, coplanar wave guide feedback line, grading structure floor and coaxial fitting.Use symmetric double circular ring structure radiating element, by circular and trapezoidal merge cleverly, width gradual change characteristic is made it have while increasing radiating element area, the effective bandwidth improving antenna, two coupling apertures that regulation radiating element is formed, can be effectively improved the antenna frequency response in low-frequency range, make impedance bandwidth extend to low-frequency range, the coplanar wave guide feedback line using rectangle fusion structure can regulate input impedance, reduces radiation loss.This antenna has the features such as miniaturization, ultra broadband, high-gain, omnidirectional radiation, working frequency range is 2.1～12.2GHz, meet long distance radio frequency identification and the ultra-wideband communication system demand to working frequency range, be the good small capacity double frequency range planar monopole antenna of a application prospect.
Description
Technical field
This utility model relates to technical field of ultra-wideband radio communication, particularly a kind of symmetric double circular ring structure co-planar waveguide
Feed two-band planar monopole antenna, it is adaptable to long distance radio frequency identification and super broad band radio communication system.
Background technology
Along with developing rapidly of wireless communication technology, frequency spectrum resource is continuously developed utilization, to antenna function, performance,
The aspect such as low cost, miniaturization it is also proposed higher requirement.Long distance radio frequency identification system is to utilize electromagnetic space to couple skill
Art carries out automated radio frequency identification, the logistics management that is widely used in Internet of Things, traffic administration, production management, resource exploitation etc.
Field, the frequency that long distance radio frequency identification system mainly uses is 2.45GHz and 5.8GHz, as portable radio-frequency identification system
In small flat antenna be its key components.Ultra-wideband communication system has that capacity of resisting disturbance is strong, signal penetrance is good,
Resolution advantages of higher, has critical role in high-speed radiocommunication system, and application band is mainly 3.1～10.6GHz.Nothing
When line communication system needs compatible multiple frequency range, need to design that a kind of to have volume section little, low, the feature such as be easily integrated many
Frequency range flat plane antenna, meets multiband communication requirement.Plane single pole sub antenna typically has wider bandwidth and horizontal omnidirectional spoke
Penetrating characteristic, radiant body is coplanar with floor, is most basic antenna form, is widely used in modern wireless communication systems.Three
Dihedral, square, circular, elliptic plane printed antenna have certain ultra broadband characteristic, and reason is radiating element and floor
Being equivalent to the uniform tapered transmission lines of TEM, the overall dimensions of radiating element determines the lowest operating frequency of antenna.Printing ultra broadband sky
Line is mainly by changing radiating element size, structure and the method such as floor location, shape raising radianting capacity so that it is have ultra-wide
Band characteristic.A kind of water-drop-shaped structure superwide band single polar antenna, is designed to drop shape by radiating element, and bandwidth is promoted to 117%
Above, but antenna size is relatively big, is not easy to processing.A kind of plane ultra-wideband antenna of semiellipse structure coplanar wave guide feedback, spoke
Penetrating unit class and be similar to goblet-shaped, utilize electromagnetism symmetry principle, design simple in construction, impedance bandwidth reaches 121%, and size contracts
Little to 41.2%, shortcoming is that low-frequency range antenna performance is more weak.Radiating element uses grading structure can cause on a different frequency
Produce resonance, the impedance bandwidth of further broadening antenna.Coplanar wave guide feedback form is used to have ultra broadband, low dispersion, be prone to
The advantage such as conformal, changes the gap between radiating element and floor and can effectively improve the impedance bandwidth characteristic of antenna.A kind of rank
Ladder grading structure plane ultra-wideband antenna, uses the rectangle combination radiation unit of different proportion, makes adjacent by gradual change combination
Different frequency point produces resonance, the bandwidth of operation of effective extended antenna so that it is reach 2.63～13.55GHz；A kind of inverted trapezoidal
Grading structure coplanar wave guide feedback plane ultra-wideband antenna, uses inverted trapezoidal radiating element, makes different frequency resonance point be stacked mutually
Adding, the impedance bandwidth of effective broadening antenna, carry a width of 2.9～13.5GHz, shortcoming is that both antennas all can not meet long distance
Frequency range demand from radio-frequency recognition system.
Utility model content
The purpose of this utility model is to provide a kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole sky
Line, meets long distance radio frequency identification system and the super broad band radio communication system demand to frequency range simultaneously, has two-band characteristic
With miniaturization, the frame for movement feature of low section.
The technical solution of the utility model is: a kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole sky
Line, by symmetric double circular ring structure radiating element (1), coplanar wave guide feedback line (2), grading structure floor (3) and coaxial fitting (4)
Constituting, described symmetric double circular ring structure radiating element (1) is combined by two annulus, and the center of circle is symmetrical in the axis of antenna
Line, two annulus upper ends are connected by arc transition, and lower end connects trapezium structure, and described coplanar wave guide feedback line (2) is rectangle
Fusion structure, is that the fusion of a certain proportion of rectangle forms by length-width ratio, and described grading structure floor (3) is by inside rectangle floor
Excise two rectangles and form stairstepping, one triangle of floor lateral resection, it is characterised in that: symmetric double circular ring structure radiates
Unit (1), coplanar wave guide feedback line (2), grading structure floor (3) are positioned at medium substrate homonymy, on coplanar wave guide feedback line (2)
End is connected with symmetric double circular ring structure radiating element (1) lower end trapezium structure, and coplanar wave guide feedback line (2) lower end is external coaxially
Joint (4), grading structure floor (3) are symmetrical in both sides, antenna axis, certain with existing between coplanar wave guide feedback line
Gap.
Effect of the present utility model is: this antenna use symmetric double circular ring structure radiating element, by circular and trapezoidal enter
Row merges cleverly, makes it have width gradual change characteristic increasing while radiating element area, it is achieved each resonance point mutual
Superposition, the effective bandwidth improving antenna, two coupling apertures that regulation radiating element is formed, antenna can be effectively improved low
The frequency response of frequency range, makes impedance bandwidth extend to low-frequency range, and the operating frequency of antenna effectively covers long distance radio frequency identification
Systematic difference frequency range, uses the coplanar wave guide feedback line of rectangle fusion structure can regulate input impedance, reduces radiation loss,
Form gap between rectangle floor and feed line after cutting process, connect the resonance point of different frequency, Net long wave radiation difference frequency
The electromagnetic wave of rate, further expands the impedance bandwidth of antenna, and working frequency range is 2.1～12.2GHz, covers two systematic difference
Frequency range, meets long distance radio frequency identification system and the ultra-wideband communication system demand to working frequency range, in gain and directivity etc.
Aspect meets and uses requirement, has the features such as ultra broadband, high-gain, omnidirectional radiation, is the good small capacity double of a application prospect
Frequency range planar monopole antenna.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model example.
Fig. 2 this utility model example actual measurement antenna standing wave ratio curve compares with simulation result.
Fig. 3 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 2.5GHz.
Fig. 4 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 2.5GHz.
Fig. 5 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 5.8GHz.
Fig. 6 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 5.8GHz.
Fig. 7 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 8.5GHz.
Fig. 8 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 8.5GHz.
Fig. 9 is the peak gain curve of this utility model example.
Detailed description of the invention
Detailed description of the invention of the present utility model is: as it is shown in figure 1, a kind of symmetric double circular ring structure coplanar wave guide feedback is double
Frequency range planar monopole antenna, by symmetric double circular ring structure radiating element (1), coplanar wave guide feedback line (2), grading structure floor
(3) constituting with coaxial fitting (4), described symmetric double circular ring structure radiating element (1) is combined by two annulus, the center of circle pair
Claiming the axis in antenna, two annulus upper ends to be connected by arc transition, lower end connects trapezium structure, by circular and trapezoidal carry out
Merge cleverly, while increasing radiating element area, make it have width gradual change characteristic, it is achieved mutually folding of each resonance point
Add, the effective bandwidth improving antenna, two coupling apertures that regulation radiating element is formed, antenna can be effectively improved at low frequency
The frequency response of section, makes impedance bandwidth extend to low-frequency range, and the operating frequency of antenna effectively covers long distance radio frequency identification system
The application band of system, described coplanar wave guide feedback line (2) is rectangle fusion structure, length-width ratio be that a certain proportion of rectangle melts
Conjunction forms, and can regulate input impedance, reduces radiation loss, and described grading structure floor (3) is by rectangle floor medial resection
Two rectangles form stairstepping, and one triangle of floor lateral resection, between rectangle floor and the feed line after cutting process
Form gap, connect the resonance point of different frequency, the electromagnetic wave of Net long wave radiation different frequency, further expand the impedance band of antenna
It is wide, it is characterised in that: symmetric double circular ring structure radiating element (1), coplanar wave guide feedback line (2), grading structure floor (3) are positioned at
Medium substrate homonymy, coplanar wave guide feedback line (2) upper end is connected with symmetric double circular ring structure radiating element (1) lower end trapezium structure
Connecing, the external coaxial fitting in coplanar wave guide feedback line (2) lower end (4), grading structure floor (3) are symmetrical in antenna axis two
Side, with there is certain gap between coplanar wave guide feedback line.
Select DIELECTRIC CONSTANT εr=2.65, the medium substrate of thickness h=1mm, dielectric loss is 0.001.Medium substrate height l
=45mm, wide w=45mm, symmetric double circular ring structure radiating element, coplanar wave guide feedback line, grading structure floor are printed on medium
On substrate same plane, antenna is that Y-axis is symmetrical, and radiating element is w by two center of circle distances4, radius be r1、r2Annulus group
Conjunction forms, and the center of circle is symmetrical in the axis of antenna, and two annulus upper ends are r by radius3Arc transition connects, and lower end connects trapezoidal
Structure, uses rectangle to merge coplanar wave guide feedback line feed, and feed line is by a size of l1、w1And l6、w2Rectangle merge form,
Regulation input impedance, the gap width between radiating element and floor is g, and two pieces of rectangle floors are symmetrical in the left and right two of antenna
Side, by two a size of w of rectangle floor medial resection5、l3-l2And w6、l4-l3Rectangle forms stairstepping, floor lateral resection
One triangle.Utilize electromagnetic simulation software Ansoft HFSS to carry out simulation optimization analysis, draw the physical dimension of antenna: r1
=8.1mm, r2=3.0mm, r3=6.3mm, w1=3.4mm, w2=11.1mm, w3=18.8mm, w4=18.8mm, w5=
5.2mm, w6=3.7mm, w7=4.6mm, w8=18.8mm, l1=18.1mm, l2=15.6mm, l3=17.9mm, l4=
20.1mm, l5=14.8mm, l6=3.1mm, l7=3.8mm, l8=7.5mm, g=1.8mm, as shown in Figure 1.
Use microwave vector analysis instrument that antenna model is tested, actual measurement antenna standing wave ratio curve and Ansoft HFSS
Simulation result contrasts as in figure 2 it is shown, can be derived that from test comparison result, and measured result and simulation result have on overall trend
Have good concordance, demonstrate the effectiveness of simulation result, the effective bandwidth of antenna standing wave ratio VSWR≤2 be 2.1～
12.2GHz, effectively covers long distance radio frequency identification system and two systematic difference frequency ranges of ultra-wideband communication system, the widest
Achieving impedance matching in frequency band, measured curve has certain difference with simulation curve contrast in low-frequency range, mainly processes by mistake
Difference is caused.
Antenna xoz face at tri-Frequency points of 2.5GHz, 5.8GHz, 8.5GHz and xoy surface radiation directional diagram are carried out
Test, actual measurement and simulation result are as shown in Fig. 3,4,5,6,7,8.It can be seen that measured result is basic with simulation result
Keeping consistent, antenna for irregularly fanning lobe, in xoy surface radiation curve approximation circle, meets long distance radio frequency identification system in xoz face
Unite in applying frequency 2.45GHz and the 5.8GHz demand to omnidirectional radiation, also meet complete in the application frequency band of radio ultra wide band system
To radiation demand, antenna has good directivity at Frequency point.Along with the rising of frequency, the antenna pattern of antenna occurs
Distortion slightly, but do not affect the integral radiation characteristic of antenna.
Antenna at the peak gain curve of different frequency point as it is shown in figure 9, choose certain sampled point in frequency band range,
Peak gain changes relatively more steady at below 8GHz, and minimum peak gain is 3.5dB, and peak-peak gain is 8.3dB, has steady
Fixed peak gain.Changing greatly at more than 8GHz, peak gain curve entirety is in rising trend, and declining now occurs in high band
As, reason is that the dielectric loss of medium substrate increases with the rising of frequency, to antenna in the gain direction of high band and steady
Qualitative cause certain loss, but do not affect the overall performance of antenna, be the two-band plane ultra-wideband sky of a function admirable
Line.
Claims (1)
1. a symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole antenna, single by the radiation of symmetric double circular ring structure
Unit (1), coplanar wave guide feedback line (2), grading structure floor (3) and coaxial fitting (4) are constituted, described symmetric double circular ring structure
Radiating element (1) is combined by two annulus, and the center of circle is symmetrical in the axis of antenna, and two annulus upper ends are by arc transition even
Connecing, lower end connects trapezium structure, and described coplanar wave guide feedback line (2) is rectangle fusion structure, length-width ratio be certain proportion
Rectangle merge and form, medial resection two rectangles in rectangle floor are formed stairsteppings, ground by described grading structure floor (3)
One triangle of plate lateral resection, it is characterised in that: symmetric double circular ring structure radiating element (1), coplanar wave guide feedback line (2),
Grading structure floor (3) is positioned at medium substrate homonymy, coplanar wave guide feedback line (2) upper end and symmetric double circular ring structure radiating element
(1) lower end trapezium structure is connected, the external coaxial fitting in coplanar wave guide feedback line (2) lower end (4), and grading structure floor (3) are left
The right side is symmetrical in both sides, antenna axis, with there is certain gap between coplanar wave guide feedback line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620708037.4U CN205752538U (en) | 2016-06-29 | 2016-06-29 | A kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole antenna |
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|---|---|---|---|
| CN201620708037.4U CN205752538U (en) | 2016-06-29 | 2016-06-29 | A kind of symmetric double circular ring structure coplanar wave guide feedback two-band planar monopole antenna |
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| CN108110427A (en) * | 2018-02-06 | 2018-06-01 | 吉林医药学院 | A kind of double band planar slot antennas of butterfly terminal |
| CN108390152A (en) * | 2018-04-22 | 2018-08-10 | 吉林医药学院 | A kind of elliptical ring combination three band planar slot antenna of shape |
| CN109768373A (en) * | 2017-11-09 | 2019-05-17 | 安弗施无线射频系统（上海）有限公司 | A kind of radiating element and bandwidth extended structure |
| CN110556629A (en) * | 2019-09-28 | 2019-12-10 | 辽宁工程技术大学 | novel ultra-wideband planar monopole antenna |
| CN111355021A (en) * | 2020-02-15 | 2020-06-30 | 杭州电子科技大学 | Bandwidth enhancement method based on self shape fusion |
| CN111403905A (en) * | 2020-02-11 | 2020-07-10 | 普联技术有限公司 | 4G omnidirectional antenna |
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| CN107069204A (en) * | 2017-04-21 | 2017-08-18 | 吉林医药学院 | A kind of oval gap ultra wide planar slot antenna with hierarchic structure |
| CN107369888A (en) * | 2017-07-18 | 2017-11-21 | 北京邮电大学 | A kind of graphene double frequency adjustable antenna and preparation method thereof |
| CN107369888B (en) * | 2017-07-18 | 2019-10-15 | 北京邮电大学 | A kind of graphene double frequency adjustable antenna and preparation method thereof |
| CN109768373A (en) * | 2017-11-09 | 2019-05-17 | 安弗施无线射频系统（上海）有限公司 | A kind of radiating element and bandwidth extended structure |
| CN108110427A (en) * | 2018-02-06 | 2018-06-01 | 吉林医药学院 | A kind of double band planar slot antennas of butterfly terminal |
| CN108110427B (en) * | 2018-02-06 | 2023-12-15 | 吉林医药学院 | Dual-broadband planar slot antenna for butterfly terminal |
| CN108390152A (en) * | 2018-04-22 | 2018-08-10 | 吉林医药学院 | A kind of elliptical ring combination three band planar slot antenna of shape |
| CN108390152B (en) * | 2018-04-22 | 2023-12-15 | 吉林医药学院 | Elliptical ring combined three-broadband planar slot antenna |
| CN110556629A (en) * | 2019-09-28 | 2019-12-10 | 辽宁工程技术大学 | novel ultra-wideband planar monopole antenna |
| CN111403905A (en) * | 2020-02-11 | 2020-07-10 | 普联技术有限公司 | 4G omnidirectional antenna |
| CN111403905B (en) * | 2020-02-11 | 2022-09-06 | 普联技术有限公司 | 4G omnidirectional antenna |
| CN111355021B (en) * | 2020-02-15 | 2022-05-03 | 杭州电子科技大学 | Bandwidth enhancement method based on self shape fusion |
| CN111355021A (en) * | 2020-02-15 | 2020-06-30 | 杭州电子科技大学 | Bandwidth enhancement method based on self shape fusion |
| CN111478037A (en) * | 2020-05-25 | 2020-07-31 | 常熟正昊电子科技有限公司 | S-band miniaturized ultra-wideband omnidirectional radiation vertical polarization antenna |
| CN112909530B (en) * | 2021-02-22 | 2022-08-02 | 烽火通信科技股份有限公司 | Double-frequency double-fed antenna |
| CN112909530A (en) * | 2021-02-22 | 2021-06-04 | 烽火通信科技股份有限公司 | Double-frequency double-fed antenna |
| CN115064861A (en) * | 2022-06-22 | 2022-09-16 | 九井互联(北京)数字技术有限公司 | USB wireless data transmission terminal with ultra-wideband antenna |
| CN115064861B (en) * | 2022-06-22 | 2023-01-10 | 九井互联(北京)数字技术有限公司 | USB wireless data transmission terminal with ultra-wideband antenna |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170629 |
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| CF01 | Termination of patent right due to non-payment of annual fee |