CN105896074B - A kind of broadband planar electronically small antenna of coplanar wave guide feedback - Google Patents
A kind of broadband planar electronically small antenna of coplanar wave guide feedback Download PDFInfo
- Publication number
- CN105896074B CN105896074B CN201610298201.3A CN201610298201A CN105896074B CN 105896074 B CN105896074 B CN 105896074B CN 201610298201 A CN201610298201 A CN 201610298201A CN 105896074 B CN105896074 B CN 105896074B
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- Prior art keywords
- antenna
- radiating surface
- gap
- slab
- dielectric
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Classifications
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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
-
- 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
Abstract
The invention discloses a kind of broadband planar electronically small antennas of coplanar wave guide feedback, and earth plate is equipped on dielectric-slab, selects the geometric center of dielectric-slab for origin；Two long gaps and centre conduction band that symmetrical co-planar waveguide is etched on earth plate, are symmetrically equipped with Double-spiral radiating surface in the outside in two gap of co-planar waveguide, the place of intermediate conduction band close to radiating surface is etched with finger-like gap.The beneficial effects of the present invention are: having broadened the working band of antenna due to the vertical, horizontal size for reducing antenna using double helical form radiating surface；Antenna size is small, and structure is relatively easy, has wider bandwidth.
Description
Technical field:
The present invention relates to wireless aerial technical field, the small day of broadband planar electricity of especially a kind of coplanar wave guide feedback
Line.
Background technique:
In a wireless communication system, the size of antenna is related with its operation wavelength.The general electric size T for working as antenna is less than 1
When, electronically small antenna can be referred to as.Electric size T=the KL, K of antenna are free space wave number, and L is the greatest physical size of antenna.
Critical component of the electronically small antenna as communication system front end, size, radiation efficiency, directionality, impedance matching and system
Making cost etc. has strong influence to wireless communication especially mobile communication.The development in present communications market is to electronically small antenna
It is miniaturization, diversification, beautiful and light and handy etc. propose more and more requirements.And it is theoretical by " the Chu limit " it is found that electricity is small
The electric size of antenna is smaller, then quality factor q is bigger, and the bandwidth of antenna is also narrower, so that the overall performance of antenna be made to be deteriorated.Cause
This, at the same have the small, broadband of electricity, efficient Antenna Design be it is very difficult, its successful design is in practical engineering application
In have very important application value.
" AEU:International Journal of Electronic and commination " 2011,65
(2): 148-153. has delivered a kind of electronically small antenna for working in 2.4GHz, is existed using the electronically small antenna that impedance matching circuit designs
Working frequency points reflection coefficient S11Can be down to -28dB or so, but the electronically small antenna bandwidth is very narrow, S11It is below in -10dB
Relative bandwidth is about 4.5%.
Summary of the invention:
The purpose of the present invention is design one kind to be able to satisfy communication system requirements and bandwidth, small in size, light and handy and inexpensive
Coplanar wave guide feedback broadband planar electronically small antenna.
The technical scheme is that a kind of broadband planar electronically small antenna of coplanar wave guide feedback, it is characterised in that: be situated between
Scutum is equipped with earth plate, selects the geometric center of dielectric-slab for origin；The two of symmetrical co-planar waveguide are etched on earth plate
Long gap and intermediate conduction band, are symmetrically equipped with Double-spiral radiating surface in the outside in two gap of co-planar waveguide, intermediate conduction band connects
The place of nearly radiating surface is etched with finger-like gap.
The beneficial effects of the present invention are: improving the resistance in antenna broadband by loading finger-like gap on intermediate conduction band
Anti- matching and standing-wave ratio reduce reflection, improve the working efficiency of antenna；Antenna is reduced using double helical form radiating surface
Vertical, horizontal size has broadened the working band of antenna；Antenna size is small, and structure is relatively easy, has wider bandwidth, S11It is small
It is 3.75-4.63GHz in the frequency band of -10dB, relative bandwidth has reached 21%.
Detailed description of the invention:
Fig. 1 is structural schematic diagram 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-plane and H-plane pattern in 4GHz, and A represents the face H in figure, and B represents E
Face.
Specific embodiment:
Specific embodiments of the present invention,
A kind of broadband planar electronically small antenna of coplanar wave guide feedback is equipped with earth plate 1 on dielectric-slab, selects dielectric-slab
Geometric center is origin；Two long gaps 2 and centre conduction band of symmetrical co-planar waveguide are etched on earth plate；In co-planar waveguide
The outside in two gaps is symmetrically equipped with Double-spiral radiating surface 5；The place of intermediate conduction band close to radiating surface is etched with finger-like gap
4, rest part is feed area 3.
A kind of antenna of the ultra wide band Double-spiral radiating surface of coplanar wave guide feedback of the present invention includes: on dielectric-slab
Earth plate 1, select the center of dielectric-slab for coordinate origin；Two gaps 2 of co-planar waveguide, current feed department are etched on earth plate 1
Points 3, the finger-like gap 4 of load and Double-spiral radiating surface 5.Double-spiral radiating surface 5 is symmetrical about Y-axis, the finger-like seam of load
Gap not only reduces the overall dimension of antenna, improves the impedance of broadband internal antenna, also improves the standing-wave ratio in entire frequency band.
The results show that the finger-like gap of load makes the standing-wave ratio in entire frequency band less than 2, double helix radiating surface substantially reduces antenna
Size 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 institutes
State the S of electronically small antenna11Frequency characteristic, wherein abscissa represents frequency variable, unit GHz, and ordinate represents return loss
(S11) amplitude variations, unit dB, the results show that in 3.75GHz-4.63GHz frequency range, S11<-10dB；The width
Standing-wave ratio with electronically small antenna in entire frequency range is as shown in Figure 3, it is seen then that in the frequency range standing internal wave ratio less than 2；
Electronically small antenna of the present invention in 4GHz the antenna pattern in the face E and the face H as shown in figure 4, from fig. 4, it can be seen that the face side E
It is in the figure of eight to figure, there is certain directionality, the face H directional diagram radiates very well when 0-180 is spent.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments, and obvious variation extended from this or change
It moves within still in the protection scope of the invention.
Claims (1)
1. a kind of broadband planar electronically small antenna of coplanar wave guide feedback, it is characterised in that: be equipped with earth plate, selection on dielectric-slab
The geometric center of dielectric-slab is origin；Two long gaps and centre conduction band of symmetrical co-planar waveguide are etched on earth plate；?
The outside of two long gaps of co-planar waveguide is symmetrically equipped with Double-spiral radiating surface, and Double-spiral radiating surface is the slot of terminal short circuit
Line detail；For intermediate conduction band close to the place load finger-like gap of radiating surface as wideband impedance match network, finger-like gap is eventually
The slot detail of open circuit is held, rest part is feed area；The broadband planar electronically small antenna have wider bandwidth, S11 be less than-
The frequency band of 10dB is 3.75-4.63GHz, relative bandwidth 21%.
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 CN105896074A (en) | 2016-08-24 |
| CN105896074B true 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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Families Citing this family (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 |
| CN106848559B (en) * | 2017-02-15 | 2023-07-25 | 河南师范大学 | Multifrequency antenna of coplanar waveguide feed |
| 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 |
| CN108110416B (en) * | 2017-12-19 | 2023-07-25 | 河南师范大学 | I-shaped dual-frequency slot antenna based on coplanar waveguide feed |
| CN107834191B (en) * | 2017-12-19 | 2020-01-17 | 河南师范大学 | Single spiral slot antenna of coplanar waveguide feed |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE302473T1 (en) * | 2000-01-19 | 2005-09-15 | Fractus Sa | ROOM-FILLING MINIATURE ANTENNA |
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2016
- 2016-05-09 CN CN201610298201.3A patent/CN105896074B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 《A 2.45-GHz Electrically Small Slot Antenna》;Koen Van Caekenberghe et-al;《IEEE Antennas and Wireless Propagation Letters》;20080331;第7卷;第346-348页 |
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| CN105896074A (en) | 2016-08-24 |
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Granted publication date: 20190531 Termination date: 20200509 |