CN109994828A - A kind of broad-band slot coupled antenna - Google Patents
A kind of broad-band slot coupled antenna Download PDFInfo
- Publication number
- CN109994828A CN109994828A CN201910169860.0A CN201910169860A CN109994828A CN 109994828 A CN109994828 A CN 109994828A CN 201910169860 A CN201910169860 A CN 201910169860A CN 109994828 A CN109994828 A CN 109994828A
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- Prior art keywords
- feed
- bottom plate
- antenna
- metal
- medium bottom
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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
- H01Q1/12—Supports; Mounting means
-
- 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
-
- 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
Abstract
The invention discloses a kind of broad-band slot coupled antenna, medium bottom plate, medium feed bracket, differential feed branch line, radiator, feed minor matters, ground pad, short-circuit column, feed coupling gap；Feed coupling gap for metal, and is carved in the lower surface of medium bottom plate on the metal surface, and upper surface is printed with differential feed branch line and feed minor matters；Feed minor matters are located at the upper surface of medium bottom plate, and the feed to differential feed branch line is completed by way of slot-coupled；Bracket is fed between medium bottom plate and radiator, is connect with metal radiation body and metal radiation body is fed；Ground pad is located at the upper surface of medium bottom plate, is connect by short circuit metal column with the metal ground short circuit of medium bottom plate following table；Feed coupling gap realizes the differential feed of antenna, and improves the bandwidth of operation of antenna.The configuration of the present invention is simple is easily worked, and wireless communication system that is small in size and can realizing wide-band reduces the complexity of communication system antenna.
Description
Technical field
The invention belongs to wireless communication fields, and in particular to a kind of broad-band slot coupled antenna can be applied to channel radio
Believe in Antenna Design.
Background technique
With the development of mobile radio communications system, the performance requirement of system is higher and higher, and antenna is as wireless communication system
Important component also receives more and more attention in system.Currently, antenna is just towards broadband, the side of miniaturization, low-power consumption
To development, the antenna with high-performance, low cost how is designed, the development goal of antenna designers is had become.In recent years,
Due to the peculiar advantage of linear polarized antenna itself, has the advantages that system sensitivity height and cross polarization are low, have been obtained for day
The extensive favor of line designer and consumer.In addition, slot-coupled broad-band antenna has wider bandwidth of operation, can satisfy more
The signal of channel or different frequency works at the same time, and can save antenna amount in wireless telecom equipment, therefore, all channel antenna
Have become the preferred antenna in wireless communication designs.
Front end component of the antenna as communication system, under the premise of guaranteeing self performance also will as far as possible with the system integration,
This also proposes challenge to Antenna Design teacher, and miniaturization, broadband also have become the development trend of current antenna.Especially exist
In military communication, in order to avoid the interference of enemy army, guarantees the continuity of communication, mostly uses the communication techniques such as frequency hopping, spread spectrum,
As frequency hopping rate is higher and higher, frequency hopping range is increasing, and narrow-band antenna originally has no longer been able to satisfy current communication and has wanted
It asks, therefore, the demand of all channel antenna is also increasingly urgent to；In addition, being since carrier-borne, airborne communication apparatus is more and more
The mutual coupling between different frequency range, different antennae is reduced, all channel antenna also receives more and more attention.Furthermore in modern machine
In the design of carrier radio communication equipment, in order to meet aerodynamic requirement, it need to be needed under the premise of guaranteeing communication quality
Design conformal antenna or low profile antenna.Therefore, the size of antenna how is reduced under the premise of guaranteeing antenna performance and is cutd open
Face, this is work important and urgent at present.In conclusion antenna it is broadband, miniaturization, low section have become antenna neck
An important research topic in domain.
Summary of the invention
In view of the deficiency of the prior art, the purpose of the present invention is to provide a kind of realization broadband low section days
Line, the present invention reasonably utilize slot-coupled technology, expand the working frequency range of aerial array, while improving the resistance in working band
Anti- matching properties reduce antenna section, to realize the low section of antenna, miniaturization.
The present invention is realized according to following technical scheme:
A kind of broad-band slot coupled antenna characterized by comprising medium bottom plate, medium feed bracket, differential feed branch
Line, radiator, feed minor matters, ground pad, short-circuit column, feed coupling gap；Wherein, the lower surface of the medium bottom plate is gold
Possession, and it is carved with feed coupling gap on the metal surface, upper surface is printed with differential feed branch line and feed minor matters；The feedback
Electric minor matters are located at the upper surface of medium bottom plate, and the feed to the differential feed branch line is completed by way of slot-coupled；Institute
Feed bracket is stated between medium bottom plate and radiator, is connect with the metal radiation body and the metal radiation body is carried out
Feed；The ground pad is located at the upper surface of medium bottom plate, by the short-circuit column of metal and the metal of medium bottom plate following table
Short circuit connection；The differential feed of antenna is realized by feed coupling gap, and improves the bandwidth of operation of antenna, so that day
The greatest irradiation direction of line gain is the direction perpendicular to metal radiation body.
In above-mentioned technical proposal, the medium bottom plate use dielectric constant for 2.2 polytetrafluoroethylene (PTFE) plate.
In above-mentioned technical proposal, the range of the broad-band slot coupled antenna height H, the H are 0.14 λc~0.15 λc,
Wherein λcFor the centre frequency of working frequency range.
In above-mentioned technical proposal, the medium bottom plate is rectangular configuration.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, due to utilizing stent-type feed structure, which can not only play a supporting role to radiator the present invention, but also can
By the bracket to radiator direct feed.
2, the present invention improves cross polarization, and make antenna due to introducing slot-coupled differential feed method well
Antenna pattern without deviating from antenna normal direction.
3, the present invention, so as to improve impedance matching, has widened Antenna Operation bandwidth since slot-coupled technology is utilized,
Reduce antenna section.Therefore, we obtain the low profile antennas of a miniaturization.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the three-dimensional figure of inventive antenna unit；
Fig. 2 is the reflection coefficient of port loss of inventive antenna unit；
Fig. 3 is H face directional diagram of the inventive antenna unit in 2.2GHz；
Fig. 4 is E face directional diagram of the inventive antenna unit in 2.2GHz；
In figure: 102 metals；201,203,204,205 feed carrier unit；202 differential feed branch lines；302 antenna spokes
Penetrate unit；401 feed minor matters；402 metal pads；403 short-circuit columns；501 coupling gaps；Wherein, 101,301 be medium substrate.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
A kind of broad-band slot coupled antenna of the invention, comprising: medium bottom plate, medium feed bracket, differential feed branch line,
Radiator, feed minor matters, ground pad, short-circuit column, feed coupling gap；Wherein, the lower surface of medium bottom plate for metal, and
It is carved with feed coupling gap on the metal surface, upper surface is printed with differential feed branch line and feed minor matters；Feed minor matters are located at
The feed to differential feed branch line is completed in the upper surface of medium bottom plate by way of slot-coupled；Feed bracket is located at medium
Between bottom plate and radiator, it is connect with metal radiation body and metal radiation body is fed；Ground pad is located at medium bottom plate
Upper surface, connect by the short-circuit column of metal with the metal ground short circuit of medium bottom plate following table；Gap is coupled by the feed
The differential feed for realizing antenna, and improves the bandwidth of operation of antenna so that the greatest irradiation direction of antenna gain be perpendicular to
The direction of the radiator of metal.
Specifically, referring to Fig.1, antenna element is formed, wherein radiating element size S1=0.43 λ, antenna section height H=
0.15 λ, in the lower surface of medium substrate 301 with being printed with the metal of radiating element 302；Signal is by feed minor matters 401 via coupling
Joint close gap 501 is coupled to differential feed branch line 202, and 203,204 pairs of metals of feed bracket by being connected with feed branch line
Radiator 302 is fed.Feed minor matters 401 are printed in the upper surface of medium bottom plate 101, lower surface for metal 102, and in the gold
It is etched with coupling gap 501 on possession, differential feed branch line is coupled a signal to by way of slot-coupled, to form difference
Divide electric feed signal.Weld together in the end of feed line 401 and the inner core of coaxial cable, the exocuticle and pad of coaxial line
402 weld together；Rectangular dielectric plate use dielectric constant for 2.2 polytetrafluoroethylene (PTFE) plate, with a thickness of 1.2mm.The present invention
Effect can be described further in conjunction with simulation result:
1, emulation content
1.1 utilize business simulation software HFSS_15.0 to the end of antenna radiation unit employed in above embodiment
Mouth return loss carries out simulation calculation, as a result as shown in Figure 2.
1.2 utilize business simulation software HFSS_15.0 to the far field of antenna radiation unit employed in above embodiment
Antenna pattern carries out simulation calculation, as a result as shown in Figure 3, in which: Fig. 3 is that antenna radiation unit employed in example exists
The H surface radiation directional diagram of 2.2GHz.
1.3 utilize business simulation software HFSS_15.0 to the far field of antenna radiation unit employed in above embodiment
Antenna pattern carries out simulation calculation, as a result as shown in Figure 3, in which: Fig. 3 is that antenna radiation unit employed in example exists
The E surface radiation directional diagram of 2.2GHz.
2, simulation result
Reference Fig. 2, with | S11| being less than -10dB is standard, selected antenna element, Antenna Operation frequency range in embodiment
For 1.62GHz~2.82GHz, public relative bandwidth is 54.5%.
It is the far field radiation pattern in antenna face H at 2.2GHz selected in embodiment, Cong Tuzhong referring to Fig. 3
The greatest irradiation direction found out is parallel with Z axis always, and without any deviation, cross polarization is lower than main polarization at least 25dB, shows
Dual-polarization cells have lower cross polarization.
It is the far-field radiation direction in dual-polarization cells antenna face E at 2.2GHz selected in embodiment referring to Fig. 4
Figure, greatest irradiation direction as seen from the figure is parallel with Z axis always, without any deviation, cross polarization lower than it is main polarization at least
25dB shows that dual-polarization cells have lower cross polarization.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (4)
1. a kind of broad-band slot coupled antenna characterized by comprising medium bottom plate, medium feed bracket, differential feed branch
Line, radiator, feed minor matters, ground pad, short-circuit column, feed coupling gap；Wherein, the lower surface of the medium bottom plate is gold
Possession, and it is carved with feed coupling gap on the metal surface, upper surface is printed with differential feed branch line and feed minor matters；The feedback
Electric minor matters are located at the upper surface of medium bottom plate, and the feed to the differential feed branch line is completed by way of slot-coupled；Institute
Feed bracket is stated between medium bottom plate and radiator, is connect with the metal radiation body and the metal radiation body is carried out
Feed；The ground pad is located at the upper surface of medium bottom plate, by the short-circuit column of metal and the metal of medium bottom plate following table
Short circuit connection；The differential feed of antenna is realized by feed coupling gap, and improves the bandwidth of operation of antenna, so that day
The greatest irradiation direction of line gain is the direction perpendicular to the radiator of metal.
2. a kind of broad-band slot coupled antenna according to claim 1, which is characterized in that the medium bottom plate uses dielectric
The polytetrafluoroethylene (PTFE) plate that constant is 2.2.
3. a kind of broad-band slot coupled antenna according to claim 1, which is characterized in that the broad-band slot coupled antenna
The range of height H, the H are 0.14 λc~0.15 λc, wherein λcFor the centre frequency of working frequency range.
4. a kind of broad-band slot coupled antenna according to claim 1, which is characterized in that the medium bottom plate is rectangle knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169860.0A CN109994828B (en) | 2019-03-06 | 2019-03-06 | Broadband slot coupling antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910169860.0A CN109994828B (en) | 2019-03-06 | 2019-03-06 | Broadband slot coupling antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109994828A true CN109994828A (en) | 2019-07-09 |
| CN109994828B CN109994828B (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910169860.0A Active CN109994828B (en) | 2019-03-06 | 2019-03-06 | Broadband slot coupling antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976606A (en) * | 2021-02-24 | 2022-08-30 | 华为技术有限公司 | Antenna and communication device |
| WO2022265261A1 (en) * | 2021-06-18 | 2022-12-22 | 박태병 | Antenna module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509867A (en) * | 2011-11-03 | 2012-06-20 | 华南理工大学 | Circularly polarized differential feed patch antenna |
| CN104218324A (en) * | 2013-05-30 | 2014-12-17 | 株式会社Emw | Antenna |
| CN106450730A (en) * | 2016-11-03 | 2017-02-22 | 中国电子科技集团公司第十四研究所 | Low-profile dual-polarized antenna unit |
| CN108232434A (en) * | 2017-12-15 | 2018-06-29 | 华南理工大学 | A kind of low section omnidirectional radiation filters dipole antenna |
-
2019
- 2019-03-06 CN CN201910169860.0A patent/CN109994828B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509867A (en) * | 2011-11-03 | 2012-06-20 | 华南理工大学 | Circularly polarized differential feed patch antenna |
| CN104218324A (en) * | 2013-05-30 | 2014-12-17 | 株式会社Emw | Antenna |
| CN106450730A (en) * | 2016-11-03 | 2017-02-22 | 中国电子科技集团公司第十四研究所 | Low-profile dual-polarized antenna unit |
| CN108232434A (en) * | 2017-12-15 | 2018-06-29 | 华南理工大学 | A kind of low section omnidirectional radiation filters dipole antenna |
Non-Patent Citations (1)
| Title |
|---|
| B. AL-JIBOURI ; H. EVANS ; E. KOROLKIEWICZ ; E.G. LIM ; A. SAMBE: "Cavity model of circularly polarised cross-aperture-coupled microstrip antenna", 《 IEE PROCEEDINGS - MICROWAVES, ANTENNAS AND PROPAGATION》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976606A (en) * | 2021-02-24 | 2022-08-30 | 华为技术有限公司 | Antenna and communication device |
| CN114976606B (en) * | 2021-02-24 | 2023-08-22 | 华为技术有限公司 | Antenna and communication device |
| WO2022265261A1 (en) * | 2021-06-18 | 2022-12-22 | 박태병 | Antenna module |
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| Publication number | Publication date |
|---|---|
| CN109994828B (en) | 2021-06-22 |
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