CN201466214U - Ultrathin flat plate-type circular polarized antenna - Google Patents
Ultrathin flat plate-type circular polarized antenna Download PDFInfo
- Publication number
- CN201466214U CN201466214U CN2009201055523U CN200920105552U CN201466214U CN 201466214 U CN201466214 U CN 201466214U CN 2009201055523 U CN2009201055523 U CN 2009201055523U CN 200920105552 U CN200920105552 U CN 200920105552U CN 201466214 U CN201466214 U CN 201466214U
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- circular polarized
- polarized antenna
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- power splitter
- thin flat
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Abstract
The utility model relates to an ultrathin flat plate-type circular polarized antenna which comprises a baseplate, a power divider, a connector used for feeding, and two micro-strip patches connected with the power divider. A pair of notches are symmetrically formed on the outer edge of each micro-strip patch along a 45-degree axis direction; two coupling patches are arranged on one side of the baseplate, and notches which are the same to and in upper-lower correspondence with the notches of the micro-strip patches are also formed on the side of the baseplate; a reflecting circular ring and a reflecting plate are respectively arranged at the periphery of each coupling patch; and the connector is mounted on the reflecting plate. The utility model has the advantages that due to the adoption of the feeding structure of the micro-strip power divider and the micro-strip patch, the performance of the antenna is good; the defects of the traditional micro-strip antenna such as poor axial ratio and low gain are overcome; and the purposes that the gain is greater than 5dBi and the axial ratio is smaller than 3dBi are achieved; moreover, only one common PCB is used, so that the ultrathin flat plate-type circular polarized antenna further has the advantages of simple structure, small volume, low section, high coherence, and convenient realization of mass production, is very suitable for RFID systems, and can improve the performance of communication systems obviously.
Description
Technical field
The utility model relates to the circular polarized antenna that is used to communicate by letter, particularly a kind of ultra-thin flat circular polarized antenna.
Background technology
At present, the circular polarized antenna volume of domestic and international application is generally bigger, therefore is restricted in many applications.Existing circular polarization technology mainly is subjected to the restriction of axial ratio characteristic, and its frequency band is narrower; Common little band circular polarized antenna can be accomplished very thin, but the axial ratio characteristic is relatively poor, and it is lower to gain, thereby causes poor-performing, does not often reach system's requirement.At present, rfid system is all had higher requirement to the performance and the profile of circular polarized antenna, the circular polarized antenna that does not also have two performances of frequency band and axial ratio characteristic to take into account.The performance that improves traditional circular polarized antenna becomes the subject matter that needs solution.
The utility model content
For satisfying above-mentioned needs, the utility model provides a kind of frequency band and ultra-thin flat circular polarized antenna that wave beam is wide, efficient is high, volume is little, simple in structure and easy for installation realized.
The ultra-thin flat circular polarized antenna that the utility model provides, comprise substrate, described substrate is provided with power splitter and is used for the connector of feed, described power splitter links to each other with described connector by microstrip line, also comprise at least one pair of microband paste, described first microband paste links to each other with described power splitter respectively with second microband paste, the diameter of described microband paste is 0.226 λ, described microband paste is along being provided with a pair of breach that area is 0.058 λ * 0.04 λ symmetrically in outer rim on 45 ° of axis directions, and wherein λ is the wavelength of centre frequency correspondence; Be provided with a pair of and microband paste corresponding coupling paster up and down at the another side of described substrate, the paster that is coupled is provided with the breach identical with described microband paste; Be respectively equipped with the reflection annulus around the described coupling paster, the interior diameter of described reflection annulus is 0.275 λ, overall diameter is 0.35 λ, the outside of described reflection annulus is provided with reflecting plate, described reflecting plate has the interior circle concentric with described coupling paster, diameter of a circle is 0.383 λ in described, and described connector is installed on the described reflecting plate.
The ultra-thin flat circular polarized antenna of the utility model, described power splitter is the one-to-two power splitter.
The ultra-thin flat circular polarized antenna of the utility model, wherein said substrate adopts the PCB double face copper.
The ultra-thin flat circular polarized antenna of the utility model, wherein said little band ground connection line length is λ/4, and wherein λ is the wavelength of center of antenna frequency, and impedance is 100 Ω.
The ultra-thin flat circular polarized antenna of the utility model, wherein said microband paste and coupling paster respectively are provided with 2 groups, and every group each 2, described power splitter is one minute four power splitter, and described 2 groups of microband pastes link to each other with one minute four power splitter respectively.
The ultra-thin flat circular polarized antenna of the utility model, the center of wherein said circuit board has cross bath, two bottoms of the described first microstrip coupled dipole and the second microstrip coupled dipole are respectively equipped with the connecting portion that matches with described cross bath, and the described first microstrip coupled dipole and the second microstrip coupled dipole are fixed with each other by described connecting portion and cross bath respectively.
The ultra-thin flat circular polarized antenna of the utility model, the height of wherein said reflecting plate is 0.09 λ, and width is 0.025 λ, is 0.016 λ apart from the minimum distance of dipole arm, and wherein λ is the wavelength of centre frequency.
The advantage of the ultra-thin flat circular polarized antenna of the utility model is: owing to adopt microstrip power divider and microband paste feed structure, it is functional, it is poor to have overcome traditional microstrip antenna axial ratio, low shortcoming gains, realized that gain is greater than 5dBi, axial ratio is less than the circular polarized antenna of 3dBi. again owing to only use a common pcb board, simple in structure, realized that volume is little, section is low, and the consistency height is convenient to realize producing in enormous quantities, and be highly suitable for rfid system, can improve communication system performance significantly.
Description of drawings
Fig. 1 is the vertical view of the ultra-thin flat circular polarized antenna embodiment 1 of the utility model;
Fig. 2 is the front view of the ultra-thin flat circular polarized antenna embodiment 1 of the utility model;
Fig. 3 is the upward view of the ultra-thin flat circular polarized antenna embodiment 1 of the utility model;
Fig. 4 is the vertical view of the ultra-thin flat circular polarized antenna embodiment 2 of the utility model;
Fig. 5 is the upward view of the ultra-thin flat circular polarized antenna embodiment 2 of the utility model.
Embodiment
For further setting forth the ultra-thin flat circular polarized antenna of the utility model, do more detailed explanation below in conjunction with embodiment.
Embodiment 1:
Referring to figs. 1 through Fig. 3, the ultra-thin flat circular polarized antenna of the utility model, its substrate 1 adopts the PCB double face copper.The one side of substrate 1 is provided with one-to-two power splitter 5 and is used for the connector 2 of feed, and one-to-two power splitter 5 links to each other with connector 2 by microstrip line.Little band ground connection line length is λ/4, and wherein λ is the wavelength of center of antenna frequency, and impedance is 100 Ω.
Also be provided with 2 microband pastes 3,4 on this one side of substrate 1, microband paste 3,4 links to each other with one-to-two power splitter 5 respectively.The diameter of microband paste 3,4 is 0.226 λ, and microband paste 3,4 is along being provided with a pair of breach 12 that area is 0.058 λ * 0.04 λ symmetrically in outer rim on 45 ° of axis directions, and wherein λ is the wavelength of centre frequency correspondence.
Be provided with 2 coupling pasters 6,7 at the another side of substrate 1, coupling paster 6,7 is provided with the breach 13 identical with microband paste 3,4, and the position of coupling paster 6,7 is corresponding about in the of 6,7 with microband paste.Be respectively equipped with reflection annulus 8,9 around the coupling paster 6,7, the interior diameter of reflection annulus 8,9 is 0.275 λ, and overall diameter is 0.35 λ.The outside of reflection annulus 8,9 is provided with reflecting plate 10, the interior circle that reflecting plate 10 has and the paster 6,7 of being coupled is concentric, and interior diameter of a circle is 0.383 λ.
Embodiment 2:
With reference to Fig. 4 and Fig. 5, on the basis of embodiment 1, microband paste 3,4 and coupling paster 6,7 respectively are provided with 2 groups, every group each 2, power splitter 5 ' be one minute four power splitter, 2 groups of microband pastes 3,4 respectively with one minute four power splitter 5 ' link to each other.All the other structures are identical, no longer describe in detail.
The ultra-thin flat circular polarized antenna of the utility model is owing to adopt microstrip power divider and microband paste feed structure, it is functional, and it is poor to have overcome traditional microstrip antenna axial ratio, and low shortcoming gains, realized gain greater than 5dBi, axial ratio is less than the circular polarized antenna of 3dBi.Owing to only using a common pcb board, simple in structure again, realized that volume is little, section is low, and the consistency height is convenient to realize producing in enormous quantities, and is highly suitable for rfid system, can improve communication system performance significantly.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited. under the prerequisite that does not break away from the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection range of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (7)
1. ultra-thin flat circular polarized antenna, comprise substrate (1), described substrate (1) is provided with power splitter (5) and is used for the connector (2) of feed, described power splitter (5) links to each other with described connector (2) by microstrip line, it is characterized in that: also comprise at least one pair of microband paste (3,4), described microband paste (3,4) link to each other with described power splitter (5) respectively, described microband paste (3,4) diameter is 0.226 λ, described microband paste (3,4) along being provided with a pair of breach (12) that area is 0.058 λ * 0.04 λ symmetrically in outer rim on 45 ° of axis directions, wherein λ is the wavelength of centre frequency correspondence; Another side at described substrate (1) is provided with the corresponding up and down coupling paster (6,7) of a pair of and described microband paste (3,4), and described coupling paster (6,7) is provided with the breach (13) identical with described microband paste (3,4); Described coupling paster (6,7) is respectively equipped with reflection annulus (8,9) on every side, the interior diameter of described reflection annulus (8,9) is 0.275 λ, overall diameter is 0.35 λ, the outside of described reflection annulus (8,9) is provided with reflecting plate (10), described reflecting plate (10) has and the concentric interior circle of described coupling paster (6,7), circular diameter is 0.383 λ in described, and described connector (2) is installed on the described reflecting plate (10).
2. ultra-thin flat circular polarized antenna according to claim 1 is characterized in that: wherein said power splitter (5) is the one-to-two power splitter.
3. ultra-thin flat circular polarized antenna according to claim 1 and 2 is characterized in that: wherein said substrate (1) adopts the PCB double face copper.
4. ultra-thin flat circular polarized antenna according to claim 3 is characterized in that: wherein said microstrip line is long to be λ/4, and wherein λ is the wavelength of center of antenna frequency, and impedance is 100 Ω.
5. ultra-thin flat circular polarized antenna according to claim 1, it is characterized in that: wherein said microband paste (3,4) and coupling paster (6,7) respectively are provided with 2 groups, every group each 2, described power splitter (5 ') is one minute four power splitter, described 2 groups of microband pastes (3,4) respectively with one minute four power splitter (5 ') link to each other.
6. ultra-thin flat circular polarized antenna according to claim 5 is characterized in that: wherein said substrate (1 ') adopts the PCB double face copper.
7. according to claim 5 or 6 described ultra-thin flat circular polarized antennas, it is characterized in that: wherein said microstrip line is long to be λ/4, and wherein λ is the wavelength of center of antenna frequency, and impedance is 100 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201055523U CN201466214U (en) | 2009-02-24 | 2009-02-24 | Ultrathin flat plate-type circular polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201055523U CN201466214U (en) | 2009-02-24 | 2009-02-24 | Ultrathin flat plate-type circular polarized antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466214U true CN201466214U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201055523U Expired - Fee Related CN201466214U (en) | 2009-02-24 | 2009-02-24 | Ultrathin flat plate-type circular polarized antenna |
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| CN (1) | CN201466214U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872418A (en) * | 2014-03-25 | 2014-06-18 | 西安电子工程研究所 | Micro-strip one-to-two power divider |
| CN105226385A (en) * | 2015-10-09 | 2016-01-06 | 武汉中元通信股份有限公司 | The three-dimensional domain topological structure of a kind of micro-band of C-band gain directional antenna |
| CN105977622A (en) * | 2016-07-20 | 2016-09-28 | 佛山市安特纳通讯设备有限公司 | Ultrathin high-gain circularly polarized antenna |
| CN109244654A (en) * | 2018-08-20 | 2019-01-18 | 中国电力科学研究院有限公司 | A kind of TV interference measurement paster antenna, TV interference measuring device and method |
| CN112531339A (en) * | 2020-12-11 | 2021-03-19 | 安徽大学 | Millimeter wave broadband packaged antenna based on Fan-out packaging technology |
| CN113437502A (en) * | 2021-06-23 | 2021-09-24 | 哈尔滨工程大学 | Dual-frequency circularly polarized rectifying antenna |
-
2009
- 2009-02-24 CN CN2009201055523U patent/CN201466214U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872418A (en) * | 2014-03-25 | 2014-06-18 | 西安电子工程研究所 | Micro-strip one-to-two power divider |
| CN105226385A (en) * | 2015-10-09 | 2016-01-06 | 武汉中元通信股份有限公司 | The three-dimensional domain topological structure of a kind of micro-band of C-band gain directional antenna |
| CN105226385B (en) * | 2015-10-09 | 2018-12-25 | 武汉中元通信股份有限公司 | A kind of C-band gain directional antenna micro-strip three-dimensional domain topological structure |
| CN105977622A (en) * | 2016-07-20 | 2016-09-28 | 佛山市安特纳通讯设备有限公司 | Ultrathin high-gain circularly polarized antenna |
| CN105977622B (en) * | 2016-07-20 | 2019-02-22 | 佛山市安特纳通讯设备有限公司 | Ultrathin high-gain circular polarized antenna |
| CN109244654A (en) * | 2018-08-20 | 2019-01-18 | 中国电力科学研究院有限公司 | A kind of TV interference measurement paster antenna, TV interference measuring device and method |
| CN109244654B (en) * | 2018-08-20 | 2022-09-27 | 中国电力科学研究院有限公司 | Patch antenna for television interference measurement, television interference measurement device and method |
| CN112531339A (en) * | 2020-12-11 | 2021-03-19 | 安徽大学 | Millimeter wave broadband packaged antenna based on Fan-out packaging technology |
| CN113437502A (en) * | 2021-06-23 | 2021-09-24 | 哈尔滨工程大学 | Dual-frequency circularly polarized rectifying antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20180224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |