CN105977622B - Ultrathin high-gain circular polarized antenna - Google Patents
Ultrathin high-gain circular polarized antenna Download PDFInfo
- Publication number
- CN105977622B CN105977622B CN201610578125.1A CN201610578125A CN105977622B CN 105977622 B CN105977622 B CN 105977622B CN 201610578125 A CN201610578125 A CN 201610578125A CN 105977622 B CN105977622 B CN 105977622B
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- Prior art keywords
- oscillator
- metal
- circular polarisation
- circular
- polarized antenna
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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
-
- 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 present invention discloses a kind of ultrathin high-gain circular polarized antenna, it include: oscillator reflecting plate, four circular polarisation metal oscillators and the antenna cover being mounted on oscillator reflecting plate, the circular polarisation metal oscillator is circle, each circular polarisation metal oscillator is from oscillator reflecting plate certain altitude, single feeding point is equipped on the disc of circular polarisation metal oscillator, circular polarisation metal oscillator centre-point earth is connect after being connected together between each feeding point by feeding network with the output cable connector on oscillator reflecting plate.Each circular polarisation metal oscillator passes through well-designed and Precision Machining, in addition the feeding network of close dimensional, it ensure that circular polarized antenna can reach high-gain and low axis ratio, realize vertically and horizontally beam angle consistency, the advantages that improving circular polarized antenna anti-interference ability, the advantages that present invention also has structure simple, homogeneity of product, install convenient.
Description
Technical field
The present invention relates to RFID radio frequency card reading antennas fields, more particularly to a kind of ultrathin high-gain circular polarisation
Antenna.
Background technique
With the fast development of Internet of Things industry, it is desirable that the volume of antenna, which takes up space, wants small, and gain wants high, anti-interference energy
Power is eager to excel, this is exactly quaternary circular polarized antenna research and development purpose, and since quaternary circular polarized antenna is a kind of ultrathin type, high-gain resists
Interference performance is strong, this is that other antennas are difficult to realize.
For general circular polarized antenna due to its technical reason, gain is lower, and section is higher, and shared volume is larger, is axis especially
It is caused anti-interference than uneven (only centre frequency obtains lower axis ratio in frequency band, and high-end and low end frequency axis ratio is higher)
Ability is lower.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide one kind, the processing is simple, high-gain, low axis
The ultrathin high-gain circular polarized antenna of ratio.
To achieve the above objectives, the present invention adopts the following technical scheme that.
Ultrathin high-gain circular polarized antenna works in 902~928MHz frequency range characterized by comprising vibration
Sub- reflecting plate, four circular polarisation metal oscillators and the antenna cover being mounted on oscillator reflecting plate, the circular polarisation metal oscillator
It is circle, each circular polarisation metal oscillator is set on the disc of circular polarisation metal oscillator from oscillator reflecting plate certain altitude
Have a single feeding point, circular polarisation metal oscillator centre-point earth, after being connected together between each feeding point by feeding network with oscillator
Output cable connector connection on reflecting plate.
As a pair of symmetrical strip groove with improvement, is offered on circular polarisation metal oscillator, the circular polarisation is golden
The center of circle for belonging to oscillator is the symmetrical centre of two strip grooves.
As with improvement, the distance of the feeding point to the circular polarisation metal oscillator center of circle is 0.917 λ, feeding point and the center of circle
Line and strip groove axis be in 40 ° of angles, λ represents the central wavelength of circular polarized antenna operation wavelength.
As with improvement, the diameter of the circular polarisation metal oscillator between the λ of 0.45 λ -0.55, with a thickness of 0.046 λ, institute
The length and width for stating strip groove are the λ of 0.174 λ × 0.024, and λ represents the central wavelength of circular polarized antenna operation wavelength.
As with improvement, the circular polarisation metal oscillator is 0.048~0.049 λ away from oscillator reflector height, and λ represents circle
The central wavelength of poliarizing antenna operation wavelength.
As with improvement, the oscillator reflecting plate is the square aluminium alloy plate that side length is equal to 1.055 λ, aluminium alloy plate
The central wavelength of circular polarized antenna operation wavelength is represented with a thickness of 3.0mm, λ.
As with improvement, four circular polarisation metal oscillators are square arrangement, and each circular polarisation metal oscillator center is in oscillator
Distance of the projection away from oscillator reflecting plate center on reflecting plate is 0.437 λ.
As with improvement, the feeding network is formed by connecting by the radio-frequency cable of eight different lengths, different impedances, and four
The feeding point of circular polarisation metal oscillator carries out constant amplitude etc. after connecting by feeding network and mutually feeds.
As with improvement, the output cable connector is N-K radio-frequency joint or SMA-K radio-frequency joint.
As with improvement, the antenna cover is molded by the engineering plastics of low consumption anti-ultraviolet radiation.
Compared with prior art, the beneficial effects of the present invention are:
The round circular polarisation metal oscillator piece slotted using four, and single-point feedback structure is combined to realize circular polarisation, it is obtaining
Low axis ratio is obtained again while obtaining high-gain, and simplifies the processing technology of circular polarized antenna；Antenna is set to realize low section
Ultrathin type, while the width for meeting vertical beam and horizontal beam is almost the same, improves circular polarized antenna anti-interference ability.
Detailed description of the invention
Fig. 1 show circular polarized antenna structure schematic diagram provided by the invention.
Fig. 2 show single circular polarisation metal oscillator structure schematic diagram.
Fig. 3 show the side view of Fig. 2.
Fig. 4 show circular polarized antenna voltage standing wave ratio test result figure provided by the invention.
Fig. 5 show circular polarized antenna directionality measurement figure provided by the invention.
Fig. 6 show circular polarized antenna axis provided by the invention than test result figure.
Description of symbols:
1-1: circular polarisation metal oscillator, 1-2: strip groove, 1-3: feeding point, 1-4: feeding network, 1-5: output cable connects
Head, 1-6: oscillator reflecting plate.
Specific embodiment
Essence of the invention is more fully understood for convenience of those skilled in the art, with reference to the accompanying drawing to of the invention specific
Embodiment is described in detail.
As shown in Figure 1-Figure 3, a kind of ultrathin high-gain circular polarized antenna, works in 902~928MHz frequency range,
It include: oscillator reflecting plate 1-6, four circular polarisation metal oscillator 1-1 and the antenna cover being mounted on oscillator reflecting plate 1-6, institute
Stating circular polarisation metal oscillator 1-1 is circle, each circular polarisation metal oscillator 1-1 from oscillator reflecting plate 1-6 certain altitude,
The disc of circular polarisation metal oscillator 1-1 is equipped with single feeding point 1-3, circular polarisation metal oscillator 1-1 centre-point earth, each feeding point
It is connect after being connected together between 1-3 by feeding network 1-4 with the output cable connector 1-5 on oscillator reflecting plate 1-6.
Wherein, a pair of symmetrical strip groove 1-2, the circular polarisation gold are offered on circular polarisation metal oscillator 1-1
The center of circle for belonging to oscillator 1-1 is the symmetrical centre of two strip groove 1-2.
The diameter of the circular polarisation metal oscillator 1-1 between the λ of 0.45 λ -0.55, with a thickness of 0.046 λ.The strip groove
The length and width of 1-2 are the λ of 0.174 λ × 0.024, and λ represents the central wavelength of circular polarized antenna operation wavelength.To guarantee circular polarisation metal
Oscillator 1-1 is indeformable in long-term full marquis's use.
The oscillator reflecting plate 1-6 be side length be equal to 1.055 λ square aluminium alloy plate, aluminium alloy plate with a thickness of
3.0mm.Four circular polarisation metal oscillator 1-1 are square arrangement, and each circular polarisation metal center oscillator 1-1 is in oscillator reflecting plate 1-
Distance of the projection away from the center oscillator reflecting plate 1-6 on 6 is 0.437 λ.
The feeding network 1-4 is formed by connecting by the radio-frequency cable of eight different lengths, different impedances, radio-frequency cable connection
Point realizes with flow splitter and connects that the feeding point 1-3 of four circular polarisation metal oscillator 1-1 after feeding network 1-4 connection by carrying out
Constant amplitude etc. is mutually fed.Herein, being defined by the impedance to each radio-frequency cable with length can reach constant amplitude etc. and mutually presents
The purpose of electricity, without using power splitter.
The output cable connector is N-K radio-frequency joint or SMA-K radio-frequency joint, for realizing circular polarized antenna and connecing
The connection of receiving unit signal.It is 50 Ω high temperature radio-frequency cables that output cable, which selects impedance,.The antenna cover is by the anti-purple of low consumption
The engineering plastics of external radiation are molded.
In the present embodiment, the position selection selection of the feeding point 1-3 of circular polarisation metal oscillator 1-1 single-point feedback is heavy to closing
It wants, by strict design, the distance of the feeding point to the circular polarisation metal oscillator center of circle is 0.917 λ, feeding point and the center of circle
Line and strip groove axis are in 40 ° of angles.
Height of the circular polarisation metal oscillator 1-1 away from oscillator reflecting plate 1-6 is also critically important, in the present embodiment, preferred circular polarisation
Metal oscillator is 18mm away from oscillator reflector height H.In other embodiments, circular polarisation metal oscillator is high away from oscillator reflecting plate
Degree adjusts between 0.048~0.049 λ, is not limited to the present embodiment.
When actual installation circular polarized antenna, in order to improve resistance to compression ability against pressure, the double left-hand thread nuts of fastening nut, and utilize
Two stainless steel clamp codes fix circular polarized antenna and installation pole.
For excellent properties possessed by circular polarized antenna made from the present embodiment are better described, the applicant is in laboratory
Under the conditions of, divide instrument to test voltage standing wave ratio with HP-8753D net, as a result as shown in Figure 4；To circular polarisation on standard testing platform
Directional pattern, gain, the axis ratio of antenna are tested, as a result as shown in Figure 5, Figure 6.
From fig. 4, it can be seen that utilizing the voltage of circular polarized antenna made from the present embodiment in 902~928MHz of working frequency range
Standing-wave ratio is less than 1.3.
As seen from Figure 5,39~46 ° of the vertical beam width of circular polarized antenna, front and back ratio F/B≤27dB, gain G≤
12dBi。
As seen from Figure 6, circular polarized antenna axis ratio is also fine, in f=902~928MHz working frequency range, axis ratio AR <
4.2db。
The above specific embodiment is described in detail for the essence of the present invention, but can not be come with this to of the invention
Protection scope is limited.It should be evident that under the inspiration of the essence of the present invention, those of ordinary skill in the art can also be into
The many improvement and modification of row, it should be noted that these improvement and modification all fall in claims of the invention it
It is interior.
Claims (6)
1. ultrathin high-gain circular polarized antenna, works in 902 ~ 928MHz frequency range characterized by comprising oscillator
Reflecting plate, four circular polarisation metal oscillators and the antenna cover being mounted on oscillator reflecting plate, the circular polarisation metal oscillator are equal
For circle, each circular polarisation metal oscillator from oscillator reflecting plate certain altitude, circular polarisation metal oscillator and oscillator reflecting plate it
Between without medium substrate, on the disc of circular polarisation metal oscillator be equipped with single feeding point, circular polarisation metal oscillator centre-point earth, respectively
It is connect after being connected together between feeding point by feeding network with the output cable connector on oscillator reflecting plate；In circular polarisation metal
Offer a pair of symmetrical strip groove on oscillator, the center of circle of the circular polarisation metal oscillator be two strip grooves it is symmetrical in
The heart；The diameter of the circular polarisation metal oscillator between the λ of 0.45 λ -0.55, with a thickness of 0.046 λ, the length and width of the strip groove are
0.174λ×0.024λ；The circular polarisation metal oscillator is 0.048 ~ 0.049 λ away from oscillator reflector height；The oscillator reflection
Plate is the square aluminium alloy plate that side length is equal to 1.055 λ；The feeding network is by eight different lengths, the radio frequency of different impedances
Cable connection forms, and the feeding point of four circular polarisation metal oscillators carries out constant amplitude etc. after connecting by feeding network and mutually feeds；λ generation
The central wavelength of table circular polarized antenna operation wavelength.
2. ultrathin type high-gain circular polarized antenna according to claim 1, which is characterized in that the feeding point to circular polarisation
The distance in the metal oscillator center of circle is 0.917 λ, and the line and strip groove axis in feeding point and the center of circle are in 40o angle, and λ represents entelechy
Change the central wavelength of antenna operating wavelength.
3. it is according to claim 1 ultrathin type high-gain circular polarized antenna, which is characterized in that aluminium alloy plate with a thickness of
3.0mm。
4. ultrathin type high-gain circular polarized antenna according to claim 1, which is characterized in that four circular polarisation metal oscillators
Be square arrangement, and each circular polarisation metal oscillator center distance of the projection on oscillator reflecting plate away from oscillator reflecting plate center is equal
For 0.437 λ.
5. ultrathin type high-gain circular polarized antenna according to claim 1, which is characterized in that the output cable connector is
N-K radio-frequency joint or SMA-K radio-frequency joint.
6. ultrathin type high-gain circular polarized antenna according to claim 1, which is characterized in that the antenna cover is by low
The engineering plastics of consumption anti-ultraviolet radiation are molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610578125.1A CN105977622B (en) | 2016-07-20 | 2016-07-20 | Ultrathin high-gain circular polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610578125.1A CN105977622B (en) | 2016-07-20 | 2016-07-20 | Ultrathin high-gain circular polarized antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105977622A CN105977622A (en) | 2016-09-28 |
| CN105977622B true CN105977622B (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610578125.1A Active CN105977622B (en) | 2016-07-20 | 2016-07-20 | Ultrathin high-gain circular polarized antenna |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742138A (en) * | 2017-10-13 | 2018-02-27 | 李志毅 | A kind of luggage whole process tracking system and method based on RFID |
| CN115207617B (en) * | 2022-07-11 | 2023-12-01 | 中国电子科技集团公司第五十四研究所 | Mechanically reconfigurable panel antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466214U (en) * | 2009-02-24 | 2010-05-12 | 烟台宏益微波科技有限公司 | Ultrathin flat plate-type circular polarized antenna |
| CN204927507U (en) * | 2015-07-17 | 2015-12-30 | 深圳市华颖泰科电子技术有限公司 | Circular polarization restructural microstrip antenna |
| CN105703081A (en) * | 2016-01-13 | 2016-06-22 | 深圳华天信通科技有限公司 | Array antenna apparatus |
| CN205811038U (en) * | 2016-07-20 | 2016-12-14 | 佛山市安特纳通讯设备有限公司 | Ultrathin high-gain circular polarized antenna |
-
2016
- 2016-07-20 CN CN201610578125.1A patent/CN105977622B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466214U (en) * | 2009-02-24 | 2010-05-12 | 烟台宏益微波科技有限公司 | Ultrathin flat plate-type circular polarized antenna |
| CN204927507U (en) * | 2015-07-17 | 2015-12-30 | 深圳市华颖泰科电子技术有限公司 | Circular polarization restructural microstrip antenna |
| CN105703081A (en) * | 2016-01-13 | 2016-06-22 | 深圳华天信通科技有限公司 | Array antenna apparatus |
| CN205811038U (en) * | 2016-07-20 | 2016-12-14 | 佛山市安特纳通讯设备有限公司 | Ultrathin high-gain circular polarized antenna |
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| CN105977622A (en) | 2016-09-28 |
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