CN101888016A - Ultra Wideband Antenna with Notch Characteristics - Google Patents
Ultra Wideband Antenna with Notch Characteristics Download PDFInfo
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- CN101888016A CN101888016A CN2010102034678A CN201010203467A CN101888016A CN 101888016 A CN101888016 A CN 101888016A CN 2010102034678 A CN2010102034678 A CN 2010102034678A CN 201010203467 A CN201010203467 A CN 201010203467A CN 101888016 A CN101888016 A CN 101888016A
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Abstract
本发明提供的是一种带有陷波特性的超宽带天线。它包括介质基板、辐射单元、共面波导馈电信号带线和共面波导接地面，共面波导馈电带线直接和辐射单元连接，共面波导接地面围绕在辐射单元和共面波导馈电信号带线的周围。本发明涉及的天线有良好的宽频带特性和很好的全向辐射特性，且该天线的陷波特性可以避免对无线局域网通信造成干扰。该天线设计简单，紧凑，体积小，加工方便，成本低廉。可以用于电子侦察和电子对抗，跟踪和电磁防护的终端，超宽带无线通信的终端接收设备等。
The invention provides an ultra-wideband antenna with notch characteristics. It includes a dielectric substrate, a radiating unit, a coplanar waveguide feeding signal strip line and a coplanar waveguide grounding plane. Around the electrical signal strip line. The antenna involved in the invention has good broadband characteristics and good omnidirectional radiation characteristics, and the notch characteristic of the antenna can avoid interference to wireless local area network communication. The antenna has simple and compact design, small volume, convenient processing and low cost. It can be used for electronic reconnaissance and electronic countermeasures, terminals for tracking and electromagnetic protection, terminal receiving equipment for ultra-wideband wireless communications, etc.
Description
Technical field
The present invention relates to a kind of antenna.Particularly a kind of ultra-wideband antenna that has trap characteristic.
Background technology
Because radio communication equipment and electronic message unit be towards multifunction, miniaturization, ultra broadband and the friendly direction of coordinating with surrounding environment develop, and this makes broadband, miniaturization, high-gain becomes one of hot subject of domestic and international research.In recent years, do not need to hole and be easy to integrated coplanar waveguide structure and make rapid progress, and this structure can be made by camera technique, and polarization characteristic is preferably arranged, so in the design of the design that has been applied in ultra-wideband antenna of this technology and relevant microwave circuit components and parts.Yet frequency band that present ultra-wideband communications is shared and WLAN (wireless local area network) have shared part, therefore need the antenna of design to reduce, even can not bring interference, therefore design the focus that the ultra-wideband antenna that has trap characteristic becomes present research to wireless local area.If there is not suitable design to suppress harmonic resonance and parasitic emission, such antenna will produce electromagnetic interference near equipment, jeopardize the operate as normal of system itself and neighbor systems, particularly the wireless local area network (WLAN) system to present use causes serious disturbance.Therefore add filter and be the method for the most normal use, the interpolation suitable filters solves between antenna element and radio frequency component system finishes after.Common this method can cause antenna and microwave circuit not to match, even lowers the overall efficiency of system, and therefore designing the ultra-wideband antenna that has trap characteristic is one of important method of head it off.Solve some shortcomings of existing antenna simultaneously: the structure and the technology more complicated of the antenna that (1) is at present designed, so the simple antenna of project organization becomes the focus of present stage research.(2) present most of ultra-wideband antenna needs boring usually when the system integration, modes such as use reactance component are connected with radio-frequency front-end, therefore increase the complexity of system, have reduced the usefulness of system, can not satisfy the demand of miniaturization.
Traditional printing ultra-wideband antenna mainly is cone antenna and printing discone antenna, in order to reduce volume, Chinese patent " a ultra broadband ladder floor printing monopole antenna, application numbers 2005100242288.7 " has been set forth a kind of ultra-wideband antenna based on notch cuttype ground plate and oval radiating element.But still can not overcome present electromagnetic interference problem.Document " Harmonic Control For An Integrated Microstrip Antenna With Loaded Transmission Line; Shun-Yun Lin; Kuang-Chih Huang, and Jin-Sen Chen.Microwave And Optical Technology Letters, Vol.44; No.4; February, 2005 " proposes a kind of periodic structure that utilizes and suppresses harmonic wave, but volume is bigger, and complex structure.In order to overcome above-mentioned shortcoming, document " Design of a 5.8-GHz Rectenna Incorporating a New Patch Antenna; Ching-Hong K.Chin, Quan Xue, Chi Hou Chan; IEEE Antennas And Wireless Propagation Letters; Vol.4,2005 " has been set forth the method for etching filter on the coplanar wave guide feedback line, play the characteristic of trap, but volume is still bigger.Document " A miniaturized monopole antenna for ultra-wide band applications with band-notch Filter; B.Ahmadi, R.Faraji-Dana, IET Microw.Antennas Propag.; 2009; Vol.3, Iss.8, pp.1224-1231. " has been set forth the ultra-wideband antenna that has trap characteristic of etching U-lag and V-shaped groove, but volume is bigger, and adopt the gradual change feed structure, cause complex structure, design and debug difficulties.
Summary of the invention
The object of the present invention is to provide a kind of bandwidth wide, the radiation efficiency height can reduce the ultra-wideband antenna that has trap characteristic to the electromagnetic interference of WLAN (wireless local area network).
The object of the present invention is achieved like this:
It comprises medium substrate, radiating element, coplanar wave guide feedback signal band line and co-planar waveguide ground plane, and coplanar wave guide feedback band line directly is connected with radiating element, the co-planar waveguide ground plane be centered around radiating element and coplanar wave guide feedback signal band line around.
The present invention can also comprise:
1, the co-planar waveguide ground plane is a loop configuration, and at the broad up and down of radiating element, about narrower.
2, a groove is arranged on the co-planar waveguide ground plane.Described groove is a kind of in rectangular channel, U-lag, H shape groove or the L shaped groove.
3, radiating element is triangle, rectangle or diamond paster.
4, described radiating element is annular radiation patch, is etched with the inverted L shape groove on the co-planar waveguide ground plane.
The invention belongs to the monopole antenna of coplanar wave guide feedback, this antenna is printed on the medium substrate, and its radiating element is generally triangle patch, adopts the coplanar wave guide feedback structure, the etching rectangular channel constitutes a filter on the ground plane of co-planar waveguide simultaneously, thereby realizes trap characteristic.This antenna has good impedance bandwidth and trap characteristic, and is simple in structure, therefore increased its scope of application greatly.The present invention adopts printed antenna structure and coplanar waveguide structure, greatly reduces antenna volume, and more integrated than being easier to the radio-frequency front-end microwave integrated circuit.
The antenna that has trap characteristic of the present invention, when radiating element was rectangle or triangle patch, its length and width that constitutes the rectangular channel of trap characteristic was about its 0.29 λ when the resonant frequency bandwidth centre frequency respectively
nWith 0.03 λ
nAnd the effective wavelength of its resonance frequency can adopt λ
n=c/ (f
nε
Eff) calculate.Wherein c is the light velocity, f
nBe the centre frequency of trap characteristic, ε
EffBe effective dielectric constant.The dielectric constant of above-mentioned dielectric-slab is between 2-9.8, and the dielectric constant loss angle is less than 10
-3
The present invention compared with prior art has significant advantage: the present invention can realize the impedance bandwidth of ultra broadband; The designed antenna of the present invention is printed on same one side on the medium substrate, is made up of the rectangular channel on triangle radiating element, co-planar waveguide ground plane, coplanar wave guide feedback structure and the co-planar waveguide ground plane, helps with microwave integrated circuit integrated; Adopt the co-planar waveguide ground plane to surround radiating element, help lowering electromagnetic interference; Adopt the coplanar wave guide feedback structure, be convenient to broadening impedance bandwidth; Rectangular channel on the co-planar waveguide ground plate saves Filter Design, reduces the complexity of design cost and system, improves the overall efficiency of system simultaneously, has also dwindled overall volume; Adopt rectangular channel, simple in structure, design is easy, and can draw the approximate size of its rectangular channel as calculated according to needed harmonic wave bandwidth; This antenna structure is simple, compactness, and volume is little, and is easy to process, and cost is low.
Description of drawings
Fig. 1 is the basic structure of the invention process example 1;
Fig. 2 is the stationary wave characteristic curve of the invention process example 1 of test;
Fig. 3 is the antenna pattern of the 4GHz of the present invention of test;
Fig. 4 is the 7GHz surface radiation directional diagram of the present invention of test;
Fig. 5 is the 9.5GHz surface radiation directional diagram of the present invention of test;
Fig. 6 is the basic structure of the invention process example 2;
Fig. 7 is the standing wave curve of the invention process example 2;
Fig. 8 is the basic structure of the invention process example 3;
Fig. 9 is the standing wave curve of the invention process example 3.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Embodiment 1:
In conjunction with Fig. 1, the composition of an example of the present invention comprises that medium substrate 3, radiating element 4, coplanar wave guide feedback signal band line 5, rectangular channel 1 and ground roll connect ground 2.The lower end of the coplanar wave guide feedback signal band line 5 of this antenna is connected with the SMA inner wire.The outer conductor of SMA ground roll together connects the floor connection.According to the structure shown in the figure one,, just can satisfy its ultra broadband operating characteristic and trap characteristic as long as select suitable dimensions.
The setting of parameter:
1, the design of rectangular channel
The trap characteristic of this antenna mainly is to be made of the rectangular channel that is etched on the co-planar waveguide ground plate, the similar band stop filter of this rectangular channel, thus make the interior impedance operator variation of a certain bandwidth.The length of this rectangular channel and width are about its 0.29 λ when the resonant frequency bandwidth centre frequency respectively
nWith 0.03 λ
nAnd the effective wavelength of its resonance frequency can adopt λ
n=c/ (f
nε
Eff) calculate.Wherein c is the light velocity, f
nBe the centre frequency of trap, effective dielectric constant ε
Eff≈ (ε
r+ 1)/2.Because this rectangular channel is to the harmonic characterisitic decisive role of antenna, so the position of rectangular channel can be set in the centre position at the top of co-planar waveguide ground plane 2, helps the control of trap characteristic, can the antenna pattern of antenna be made moderate progress simultaneously.
2, the design of co-planar waveguide
Entire antenna is 50 Ω in the impedance of the feed structure of co-planar waveguide, and the ground plane of co-planar waveguide adopts the structure around radiation patch, therefore partly adopts inconsistent width at mid portion and upper and lower side, is of value to the coupling of impedance.The thickness and the dielectric constant of the conduction band width of the impedance of co-planar waveguide and co-planar waveguide electric feed signal band line 5 and the slit of length and co-planar waveguide ground plane and radiating element, medium substrate 3 are relevant, as long as change a parameter, and the just characteristic impedance of energy line on another day of other parameter inconvenience.Can also utilize computing formula commonly used to calculate the characteristic impedance of co-planar waveguide for this reason.
3, the selection of medium substrate
Generally between 2-9.8, the dielectric constant that the present invention adopts is 2.65 polyfluortetraethylene plate to the dielectric constant of medium substrate, and this substrate price is lower, and loss is less, based on above-mentioned requirements.In practice, can adopt the little medium substrate of dielectric constant loss angle according to practical application, as the dielectric constant loss angle less than 10
-3Substrate.The thickness of the medium substrate that the present invention adopts is 1.6mm, satisfies required intensity.
4, the jointing of antenna can adopt N connector or sub-miniature A connector, will select according to producing.
Fig. 2 is the standing-wave ratio curve of test, (≤2: impedance bandwidth 1) is 3.1-11.4GHz in standing-wave ratio as can be seen from figure, satisfy the demand of ultra-wideband communications, a trap characteristic is arranged between 5-6GHZ, can eliminate or reduce the electromagnetic interference of ultra-wideband antenna WLAN (wireless local area network).
Embodiment 2:
In conjunction with shown in Figure 6, the radiating element that another kind of embodiment of the present invention is an antenna adopts rectangular patch.
Embodiment 3:
In conjunction with shown in Figure 8, another kind of embodiment of the present invention is to make its radiating element into annular radiation patch, and on the co-planar waveguide ground plane etching inverted L shape groove 6, inverted L shape groove 6 can increase the impedance bandwidth of this antenna, but its trap characteristic is mainly by rectangular channel 1 contribution.
Though the present invention with preferable embodiment openly as above; but they are not to be used for limiting invention; anyly be familiar with this skill person; without departing from the spirit and scope of the invention; from when can doing various variations and retouching, so being as the criterion of should being defined with the application's claim protection range of protection scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102034678A CN101888016A (en) | 2010-06-21 | 2010-06-21 | Ultra Wideband Antenna with Notch Characteristics |
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|---|---|---|---|
| CN2010102034678A CN101888016A (en) | 2010-06-21 | 2010-06-21 | Ultra Wideband Antenna with Notch Characteristics |
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|---|---|---|---|
| CN2010102034678A Pending CN101888016A (en) | 2010-06-21 | 2010-06-21 | Ultra Wideband Antenna with Notch Characteristics |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142607A (en) * | 2011-01-21 | 2011-08-03 | 杭州电子科技大学 | Broadband low-contour cavity-backed integrated antenna |
| CN102170043A (en) * | 2011-01-27 | 2011-08-31 | 中兴通讯股份有限公司 | Wireless terminal and antenna thereof |
| CN102280705A (en) * | 2011-05-13 | 2011-12-14 | 天津大学 | Triangular polaron ultra wide band panel antenna |
| CN102790261A (en) * | 2011-05-17 | 2012-11-21 | 深圳光启高等理工研究院 | Antenna device |
| CN102956965A (en) * | 2012-07-27 | 2013-03-06 | 电子科技大学 | Ultra-wide band dual-polarization planar antenna |
| CN103633425A (en) * | 2013-11-28 | 2014-03-12 | 华南理工大学 | Difference coplanar waveguide UWB (Ultra Wide Band) wide slot trapped wave antenna with high attenuation band characteristic |
| CN103728542A (en) * | 2014-01-02 | 2014-04-16 | 国家电网公司 | Forbidden band ultra-high-frequency sensor used for spatial orientation of discharging source of transformer substation |
| CN104733836A (en) * | 2015-01-30 | 2015-06-24 | 菲力克斯电子（宁波）有限公司 | Slot antenna |
| CN105870633A (en) * | 2016-05-30 | 2016-08-17 | 中国电子科技集团公司第三十八研究所 | Ultra wide band omnibearing monopole antenna |
| CN108110415A (en) * | 2017-12-14 | 2018-06-01 | 东华大学 | A kind of compact double frequency round polarized microstrip antenna |
| CN108987919A (en) * | 2018-07-24 | 2018-12-11 | 西安电子科技大学 | A kind of polygon ultra-wideband antenna of compact unsymmetric structure |
| CN110474157A (en) * | 2019-08-27 | 2019-11-19 | 南京邮电大学 | A kind of mobile communication frequency range printed monopole antenna |
| CN110829000A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | CPW feed dual-frequency broadband SRR structure loaded single-plane antenna |
| CN112751185A (en) * | 2020-12-29 | 2021-05-04 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
| CN112865708A (en) * | 2021-01-22 | 2021-05-28 | 华南理工大学 | Radio frequency broadband power amplifier based on grounded coplanar waveguide structure and design method |
-
2010
- 2010-06-21 CN CN2010102034678A patent/CN101888016A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| ALPESH U. BHOBE ET AL.: "Wide-Band Slot Antennas With CPW Feed Lines: Hybrid and Log-Periodic Designs", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| HENAN WANG ET AL.: "Bandwidth enhancement of a wide slot UWB antenna with a notch band characteristic", 《COMMUNICATION SOFTWARE AND NETWORKS (ICCSN), 2011 IEEE 3RD INTERNATIONAL CONFERENCE ON 》 * |
| J. WILLIAM ET AL. ET AL.: "CPW-Fed UWB Slot Antenna with Band Notched Design", 《MICROWAVE CONFERENCE, 2009. APMC 2009, ASIA PACIFIC》 * |
| Z. F. YAO ET AL.: "A Novel Dual Band-notched Ultra-wideband Slot Antenna", 《ANTENNAS, PROPAGATION AND EM THEORY, 2008. ISAPE 2008. 8TH INTERNATIONAL SYMPOSIUM ON 》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142607A (en) * | 2011-01-21 | 2011-08-03 | 杭州电子科技大学 | Broadband low-contour cavity-backed integrated antenna |
| CN102170043A (en) * | 2011-01-27 | 2011-08-31 | 中兴通讯股份有限公司 | Wireless terminal and antenna thereof |
| CN102280705A (en) * | 2011-05-13 | 2011-12-14 | 天津大学 | Triangular polaron ultra wide band panel antenna |
| CN102790261A (en) * | 2011-05-17 | 2012-11-21 | 深圳光启高等理工研究院 | Antenna device |
| CN102790261B (en) * | 2011-05-17 | 2015-07-29 | 深圳光启创新技术有限公司 | Antenna assembly |
| CN102956965A (en) * | 2012-07-27 | 2013-03-06 | 电子科技大学 | Ultra-wide band dual-polarization planar antenna |
| CN102956965B (en) * | 2012-07-27 | 2014-10-01 | 电子科技大学 | An ultra-wideband dual-polarized planar antenna |
| CN103633425A (en) * | 2013-11-28 | 2014-03-12 | 华南理工大学 | Difference coplanar waveguide UWB (Ultra Wide Band) wide slot trapped wave antenna with high attenuation band characteristic |
| CN103728542A (en) * | 2014-01-02 | 2014-04-16 | 国家电网公司 | Forbidden band ultra-high-frequency sensor used for spatial orientation of discharging source of transformer substation |
| CN104733836A (en) * | 2015-01-30 | 2015-06-24 | 菲力克斯电子（宁波）有限公司 | Slot antenna |
| CN105870633A (en) * | 2016-05-30 | 2016-08-17 | 中国电子科技集团公司第三十八研究所 | Ultra wide band omnibearing monopole antenna |
| CN108110415A (en) * | 2017-12-14 | 2018-06-01 | 东华大学 | A kind of compact double frequency round polarized microstrip antenna |
| CN108110415B (en) * | 2017-12-14 | 2020-04-17 | 东华大学 | Compact dual-frequency circularly polarized microstrip antenna |
| CN108987919A (en) * | 2018-07-24 | 2018-12-11 | 西安电子科技大学 | A kind of polygon ultra-wideband antenna of compact unsymmetric structure |
| CN110474157A (en) * | 2019-08-27 | 2019-11-19 | 南京邮电大学 | A kind of mobile communication frequency range printed monopole antenna |
| CN110829000A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | CPW feed dual-frequency broadband SRR structure loaded single-plane antenna |
| CN112751185A (en) * | 2020-12-29 | 2021-05-04 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
| CN112751185B (en) * | 2020-12-29 | 2022-04-08 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna unit, antenna device and electronic terminal |
| CN112865708A (en) * | 2021-01-22 | 2021-05-28 | 华南理工大学 | Radio frequency broadband power amplifier based on grounded coplanar waveguide structure and design method |
| WO2022156828A1 (en) * | 2021-01-22 | 2022-07-28 | 华南理工大学 | Grounded coplanar waveguide structure-based radio frequency broadband power amplifier and design method |
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Application publication date: 20101117 |