CN105896074A - Broadband-plane electric small antenna with coplanar waveguide feeding - Google Patents
Broadband-plane electric small antenna with coplanar waveguide feeding Download PDFInfo
- Publication number
- CN105896074A CN105896074A CN201610298201.3A CN201610298201A CN105896074A CN 105896074 A CN105896074 A CN 105896074A CN 201610298201 A CN201610298201 A CN 201610298201A CN 105896074 A CN105896074 A CN 105896074A
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- antenna
- broadband
- coplanar waveguide
- small antenna
- conduction band
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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
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Abstract
The invention discloses a broadband-plane electric small antenna with coplanar waveguide feeding, wherein a grounding plate is disposed on a medium plate, and the geometric center of the medium plate is an original point; and two long gaps with a symmetrical coplanar waveguide and a middle conduction band are etched on the ground plate, dual-spiral radiation faces are disposed symmetrically on outer sides of the two gaps with the coplanar waveguide, and a finger-shaped gap is etched at the position of the middle conduction band near the radiation faces. The antenna disclosed by the invention has the beneficial effects that the dual-spiral radiation faces are used to reduce longitudinal and horizontal sizes of the antenna and expand a working frequency band of the antenna; and the antenna has a small size, the structure is relatively simple, and the antenna has a relatively wide bandwidth.
Description
Technical field:
The present invention relates to wireless aerial technical field, the broadband planar electronically small antenna of a kind of coplanar wave guide feedback.
Background technology:
In a wireless communication system, the size of antenna is relevant with its operation wavelength.Typically when electric size T of antenna is less than 1, electronically small antenna can be referred to as.Electric size T=KL of antenna, K is free space wave number, and L is the greatest physical size of antenna.Electronically small antenna is as the critical component of communication system front end, and its size, radiation efficiency, directivity, impedance matching and cost of manufacture etc. have strong influence to radio communication especially mobile communication.The development in present communications market proposes increasing requirement to the miniaturization of electronically small antenna, variation, the aspect such as attractive in appearance and light and handy.And theoretical from " the Chu limit ", the electric size of electronically small antenna is the least, then quality factor q is the biggest, and the bandwidth of antenna is the narrowest, so that the overall performance of antenna is deteriorated.Therefore, having little, the broadband of electricity, high efficiency Antenna Design is extremely difficult, its successful design has very important using value in practical engineering application simultaneously.
" AEU:International Journal of Electronic and commination " 2011,65(2): 148-153. has delivered a kind of electronically small antenna working in 2.4GHz, utilize the electronically small antenna that impedance matching circuit designs at working frequency points reflection coefficient S11Can as little as about-28dB, but this electronically small antenna bandwidth is the narrowest, S11Relative bandwidth at below-10dB is about 4.5%.
Summary of the invention:
It is an object of the invention to design and a kind of can meet that communication system requirements and bandwidth, volume be little, light and handy and the broadband planar electronically small antenna of the coplanar wave guide feedback of low cost.
The technical scheme is that, the broadband planar electronically small antenna of a kind of coplanar wave guide feedback, it is characterised in that: being provided with earth plate on dielectric-slab, the geometric center selecting dielectric-slab is initial point；Etching two long gaps of symmetrical co-planar waveguide and middle conduction band on earth plate, what outside in co-planar waveguide two gap was symmetrical is provided with Double-spiral radiating surface, and middle conduction band is etched with finger-like gap close to the place of radiating surface.
The invention has the beneficial effects as follows: by loading finger-like gap on middle conduction band, improve the impedance matching in antenna broadband and standing-wave ratio, decrease reflection, improve the work efficiency of antenna；The double helical form radiating surface is used to reduce the vertical, horizontal size of antenna, the broadening working band of antenna；Antenna size is little, and structure is relatively easy, has wider bandwidth, S11Frequency band less than-10dB is 3.75-4.63GHz, and relative bandwidth has reached 21%.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the return loss (S of antenna of the present invention11);
Fig. 3 is the standing-wave ratio of antenna of the present invention；
Fig. 4 is Antenna Operation of the present invention E face and H face directional diagram when 4GHz, and in figure, A represents H face, and B represents E face.
Detailed description of the invention:
The specific embodiment of the present invention,
The broadband planar electronically small antenna of a kind of coplanar wave guide feedback, is provided with earth plate 1 on dielectric-slab, and the geometric center selecting dielectric-slab is initial point；Earth plate etches two long gaps 2 of symmetrical co-planar waveguide and middle conduction band；What outside in co-planar waveguide two gap was symmetrical is provided with Double-spiral radiating surface 5；Middle conduction band is etched with finger-like gap 4 close to the place of radiating surface, and remainder is feed area 3.
The antenna of the ultra broadband Double-spiral radiating surface of a kind of coplanar wave guide feedback of the present invention includes: the earth plate 1 on dielectric-slab, and the center selecting dielectric-slab is zero；Two gaps 2 of co-planar waveguide, feed section 3, the finger-like gap 4 of loading and Double-spiral radiating surface 5 is etched on earth plate 1.Double-spiral radiating surface 5 is symmetrical about Y-axis, and the finger-like gap of loading not only reduces the overall dimension of antenna, improves the impedance of broadband internal antenna, also improves the standing-wave ratio in whole frequency band.Result shows, the finger-like gap of loading makes the standing-wave ratio in whole frequency band less than 2, and Double helix radiating surface substantially reduces the size of antenna, has widened the bandwidth of operation of antenna.
The final size of product of the present invention is 10mm*7mm*0.8mm, has good compactedness.Fig. 2 shows the S of described electronically small antenna11Frequency characteristic, wherein abscissa represents frequency variable, and unit is GHz, and vertical coordinate represents return loss (S11) amplitude variations, unit is dB, and result shows, in 3.75GHz-4.63GHz frequency range, S11<-10dB；Described broadband electronically small antenna standing-wave ratio in whole frequency band range is as shown in Figure 3, it is seen that, at described frequency band range standing internal wave ratio less than 2；Electronically small antenna of the present invention antenna pattern in E face and H face when 4GHz as shown in Figure 4, from fig. 4, it can be seen that E face directional diagram is the figure of eight, has certain directivity, and H face directional diagram radiates when 0-180 spends very well.
Above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive, and within the obvious change thus extended out or variation are still in the protection domain of the invention.
Claims (1)
1. the broadband planar electronically small antenna of a coplanar wave guide feedback, it is characterised in that: being provided with earth plate on dielectric-slab, the geometric center selecting dielectric-slab is initial point；Etching two long gaps of symmetrical co-planar waveguide and middle conduction band on earth plate, what outside in co-planar waveguide two gap was symmetrical is provided with Double-spiral radiating surface, and middle conduction band is etched with finger-like gap close to the place of radiating surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298201.3A CN105896074B (en) | 2016-05-09 | 2016-05-09 | A kind of broadband planar electronically small antenna of coplanar wave guide feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298201.3A CN105896074B (en) | 2016-05-09 | 2016-05-09 | A kind of broadband planar electronically small antenna of coplanar wave guide feedback |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105896074A true CN105896074A (en) | 2016-08-24 |
| CN105896074B CN105896074B (en) | 2019-05-31 |
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| CN201610298201.3A Expired - Fee Related CN105896074B (en) | 2016-05-09 | 2016-05-09 | A kind of broadband planar electronically small antenna of coplanar wave guide feedback |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356631A (en) * | 2016-10-17 | 2017-01-25 | 河南师范大学 | Dual-frequency antenna |
| CN106848559A (en) * | 2017-02-15 | 2017-06-13 | 河南师范大学 | A kind of multifrequency antenna of coplanar wave guide feedback |
| CN107681274A (en) * | 2017-11-20 | 2018-02-09 | 河南师范大学 | A kind of electronically small antenna applied to radio communication |
| CN107834191A (en) * | 2017-12-19 | 2018-03-23 | 河南师范大学 | A kind of single-screw slot antenna of coplanar wave guide feedback |
| CN107959111A (en) * | 2017-11-20 | 2018-04-24 | 河南师范大学 | A kind of double frequency electricity small gap antenna |
| CN108110426A (en) * | 2017-12-19 | 2018-06-01 | 河南师范大学 | A kind of double helix slot antenna applied to wireless communication |
| CN108110416A (en) * | 2017-12-19 | 2018-06-01 | 河南师范大学 | " work " font double frequency slit antenna based on coplanar wave guide feedback |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425208A (en) * | 2000-01-19 | 2003-06-18 | 弗拉克托斯股份有限公司 | Space-filling miniature antennas |
-
2016
- 2016-05-09 CN CN201610298201.3A patent/CN105896074B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425208A (en) * | 2000-01-19 | 2003-06-18 | 弗拉克托斯股份有限公司 | Space-filling miniature antennas |
Non-Patent Citations (2)
| Title |
|---|
| NADER BEHDAD: "《Single- and Dual-Polarized Miniaturized Slot Antennas and Their Applications in On-Chip Integrated Radios》", 《2009 IEEE INTERNATIONAL WORKSHOP ON ANTENNA TECHNOLOGY》 * |
| SHIH-CHIA CHIU等: "《Miniaturization of CPW-Fed Slot Antenna Using a Pair of Interdigital capacitors》", 《2013 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM (APSURSI)》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356631A (en) * | 2016-10-17 | 2017-01-25 | 河南师范大学 | Dual-frequency antenna |
| CN106848559A (en) * | 2017-02-15 | 2017-06-13 | 河南师范大学 | A kind of multifrequency antenna of coplanar wave guide feedback |
| CN107681274A (en) * | 2017-11-20 | 2018-02-09 | 河南师范大学 | A kind of electronically small antenna applied to radio communication |
| CN107959111A (en) * | 2017-11-20 | 2018-04-24 | 河南师范大学 | A kind of double frequency electricity small gap antenna |
| CN107681274B (en) * | 2017-11-20 | 2023-11-21 | 河南师范大学 | Electric small antenna applied to wireless communication |
| CN107959111B (en) * | 2017-11-20 | 2024-03-08 | 河南师范大学 | Dual-frequency electric small slot antenna |
| CN107834191A (en) * | 2017-12-19 | 2018-03-23 | 河南师范大学 | A kind of single-screw slot antenna of coplanar wave guide feedback |
| CN108110426A (en) * | 2017-12-19 | 2018-06-01 | 河南师范大学 | A kind of double helix slot antenna applied to wireless communication |
| CN108110416A (en) * | 2017-12-19 | 2018-06-01 | 河南师范大学 | " work " font double frequency slit antenna based on coplanar wave guide feedback |
| CN108110426B (en) * | 2017-12-19 | 2019-11-01 | 河南师范大学 | A kind of double helix slot antenna applied to wireless communication |
| CN107834191B (en) * | 2017-12-19 | 2020-01-17 | 河南师范大学 | Single spiral slot antenna of coplanar waveguide feed |
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| CN105896074B (en) | 2019-05-31 |
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