CN102655271A - Microstrip antenna and directional antenna comprising same - Google Patents
Microstrip antenna and directional antenna comprising same Download PDFInfo
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- CN102655271A CN102655271A CN2012101581915A CN201210158191A CN102655271A CN 102655271 A CN102655271 A CN 102655271A CN 2012101581915 A CN2012101581915 A CN 2012101581915A CN 201210158191 A CN201210158191 A CN 201210158191A CN 102655271 A CN102655271 A CN 102655271A
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Abstract
The invention relates to a microstrip antenna and a directional antenna comprising the same. According to the invention, the defects of the existing microstrip antenna can be improved. The microstrip antenna comprises a microstrip line feed part, a T-shaped microstrip line power divider and a microstrip grounding part, wherein two microstrip oscillators (5) of the microstrip line feed part are of a conical sleeve structure. The microstrip antenna is characterized in that the two microstrip oscillators (5) are respectively provided with a square compensating piece (1). The improved microstrip antenna is better in performance. Due to the compact volume, the microstrip antenna is used on the directional antenna, so that the directional antenna is compact in volume, and good in gain. The directional antenna comprising the microstrip antenna consists of the microstrip antenna and a reflecting plate. The directional antenna is characterized in that at least one of the microstrip antennae is arranged at one end of the reflecting plate (6), and is connected with the reflecting plate by a support column (14), wherein the area of the reflecting plate (6) is slightly larger than those of all the microstrip antennae. When the directional antenna comprises the two microstrip antennae, the volume and grain of the directional antenna can be best balanced.
Description
Technical field
The present invention relates to a kind of antenna, particularly a kind of microstrip antenna.
Background technology
Application number is that 201010238411.6 patent of invention discloses a kind of microstrip antenna; Though can on small and exquisite area, cover 800-2500MHz; And has good performance; But not enough below existing: 1. standing wave is bad less than 1.5 characteristic. antenna has been with having used tube-in-tube structure to produce the broadband properties of metal sleeve structure in the circuit board, can realize that standing wave is less than 1.5 matching performance but the narrower characteristic of wiring board self coupling frequency range has still limited this antenna 800-2500MHz; 2. this antenna is the Low ESR antenna, is not complementary with 50 ohm of feeder line; 3. this antenna is the unipole antenna principle, realizes complete oscillator radiation through the mirror image that oscillator and reflecting surface produce, and the ground plane of wiring board produces mirror image as reflecting surface, and this just must be satisfactory for result not as the reflecting surface of metal; 4. the low frequency coupling is undesirable.
Domestic present antenna for base station, sub-district embellished antenna, indoor distribution antenna mainly are divided into two types of omnidirectional radiation and directed radiations.To directional antenna, directional base station antenna can be realized the gain effect that 10dBi is above, reaches effective radiation effect, and when still reaching the effect of 12dBi, antenna for base station has 0.6 meter length at least, and size is bigger; And sub-district and indoor distribution antenna are owing to receive the limitation of environment for use; Can not be oversize; Realize simultaneously the radiation effect of full frequency band 800-2500MHz again, general directional antenna length is all at 200-300mm, and common directional antenna is under such wideband radiation requirement and size condition; At most realize 800-2500MHz, the gain effect of 7-9dBi.Therefore sub-district and indoor covering are needed badly and a kind ofly can be satisfied undersized requirement, can realize the full frequency band radiation effect of 800-2500MHz again, and can reach the directional antenna of the above gain effect of 10dBi.
Summary of the invention
1, technical problem to be solved:
The deficiency of existing microstrip antenna: 1. standing wave is bad less than 1.5 characteristic; 2. bad with 50 ohm of matchings of feeder line; 3. the reflecting surface effect is undesirable; 4. the low frequency coupling is undesirable.
2, technical scheme:
In order to solve above deficiency; Can keep on the basis of original size simultaneously; The invention provides a kind of microstrip antenna; Comprise feed microstrip line part, T type microstrip power divider and microstrip line grounded part, two micro-strip oscillators of microstrip line feedback part 5 adopt the structure of conical sleeve, it is characterized in that: be respectively equipped with box-shaped compensating plate 1 on two micro-strip oscillators 5.
For better effect, also made and having improved:
The top of microstrip line grounded part, corresponding two micro-strip oscillators top is provided with rectangle compensating plate 3.
The middle upper part of T type microstrip power divider is provided with a rectangle compensating plate 2.
Microstrip line grounded part 4 strengthens
Microstrip antenna is omnidirectional's full range antenna, and volume is little, and good gain effect is arranged, so be used on the directional antenna.
A kind of directional antenna that comprises microstrip antenna; Be made up of microstrip antenna and reflecting plate, it is characterized in that: at least 1 described microstrip antenna is positioned at reflecting plate 6 one ends; Connect reflecting plate 6 through supporting bracket 14, the area of reflecting plate 6 is more bigger than the area of all microstrip antennas.
When directional antenna is provided with 1 microstrip antenna,
Between said microstrip antenna and reflecting plate, two micro-strip oscillator left-right symmetric positions of microstrip antenna are provided with a square metal sheet 7.
When directional antenna was provided with 2 microstrip antennas, 2 microstrip antennas were through power splitter parallel connection in 1 minute 2.
Under the centre of described two microstrip antennas, be provided with square metal sheet 11.
No matter contain 1 still 2 microstrip antenna, the distance between adjacent antenna shakes be centre frequency EWL 0.8-1 doubly.
Beneficial effect:
Improved the deficiency of existing microstrip antenna, and size does not change.And contain the directional antenna of microstrip antenna, and advantages of small volume, can be positioned over the aerial radiation face is to constitute the embellished antenna that combines together with environment in nonmetallic any outer cover.In shot-light, in the mural painting, in the air-conditioning outer cover, in the board billboard of lawn etc., and when directional antenna contains two said microstrip antennas, reach best balance in advantages of small volume and gain, this moment, the gain of directional antenna can reach 9-12dBi.
Description of drawings
The structural representation of Fig. 1 microstrip antenna of the present invention.
Fig. 2 comprises the sketch map of the directional antenna of 1 microstrip antenna.
Fig. 3 comprises the sketch map of the directional antenna of 2 microstrip antennas.
Embodiment
Come the present invention is elaborated below in conjunction with accompanying drawing and embodiment.
Application number is 201010238411.6 to disclose a kind of microstrip antenna, is made up of microstrip-fed part, T type microstrip power divider and microstrip line grounded part, has advantages of small volume, full range omnidirectional, and gain has 2-4dBi.In to this Study of Microstrip Antennas, find; Have some shortcomings; Mainly show: 1. standing wave is bad less than 1.5 characteristic. and antenna has been with having used tube-in-tube structure to produce the broadband properties of metal sleeve structure in the circuit board, can realize that standing wave is less than 1.5 matching performance but the narrower characteristic of wiring board self coupling frequency range has still limited this antenna 800-2500MHz; 2. this antenna is the Low ESR antenna, is not complementary with 50 ohm of feeder line; 3. this antenna is the unipole antenna principle, realizes complete oscillator radiation through the mirror image that oscillator and reflecting surface produce, and the ground plane of wiring board produces mirror image as reflecting surface, and this just must be satisfactory for result not as the reflecting surface of metal; 4. the low frequency coupling is undesirable.
In order to make microstrip antenna obtain better effect, disclosed microstrip antenna has been carried out following improvement:
In order to guarantee that 800-2500MHz can realize that standing wave less than 1.5 good characteristic, consider that low frequency need increase the antenna oscillator size and realize good fit, and product space and size is limited; And the product significant advantage is exactly exquisite, and it is obviously improper to increase size, and is therefore as shown in Figure 1; On two micro-strip oscillators, establish the box-shaped compensating plate respectively; The top of microstrip line grounded part, corresponding two micro-strip oscillators top is provided with the rectangle compensating plate, has mated the antenna low-frequency range through this improvement; Through the oscillator lengthening of compensating plate 1 and the ground connection induction lengthening of compensating plate 2; Come the increase of the realization entire antenna radiating doublet of equivalence, thereby under the prerequisite of the profile size that does not change antenna, realize the good fit of low frequency.
Antenna is with having used tube-in-tube structure to produce the broadband properties of metal sleeve structure in the circuit board; But still having limited this antenna 800-2500MHz, wiring board self coupling frequency range narrower characteristic can realize that standing wave is less than 1.5 matching performance; And this antenna is the Low ESR antenna; Be not complementary with 50 ohm of feeder line; Therefore the middle upper part of T type microstrip power divider as shown in Figure 1 is provided with the impedance conversion performance that a rectangle compensating plate 3 comes the enhanced power distributor, and two antenna oscillators and the matching performance that closes.
Consider that this antenna is the unipole antenna principle; Mirror image through oscillator and reflecting surface produce is realized complete oscillator radiation; The ground plane of wiring board produces mirror image as reflecting surface, and this just must be satisfactory for result not as the reflecting surface of metal, so need to strengthen ground plane; Improve this antenna ground reflecting properties through the increase of ground connection place, thereby improved mirror effect and aerial radiation effect.
Through above improvement, microstrip antenna of the present invention and disclosed microstrip antenna performance are greatly improved.
Because microstrip antenna advantages of small volume of the present invention, and be full range omnidirectional, and fine gain arranged, therefore, we with this antenna applications in directional antenna.
One or more microstrip antennas are arranged at an end of metallic reflection plate, are connected with reflecting plate through support column, the area of reflecting plate is bigger in the projected area of reflecting plate than whole microstrip antennas.Such structure is exactly a directional antenna.
Below we specify through two embodiment.
Embodiment 1:
As shown in Figure 2: as to comprise the directional antenna of microstrip antenna, be provided with 1 microstrip antenna.
For better matching and better gain, through experiment, between said microstrip antenna and reflecting plate; Two micro-strip oscillator left-right symmetric positions of microstrip antenna are provided with a square metal sheet 7; Effectively microwave signal is played the effect of guiding into through near sheet metal induction to magnetic field microstrip antenna, thereby reduce the reflection of signal, improve the matching performance of antenna; The standing wave performance improve and radiation effect better.
The upper left corner and the lower right corner at microstrip antenna are provided with square metal sheet 8 and 9 respectively; Effectively microwave signal is played the effect of guiding into through near sheet metal induction to magnetic field microstrip antenna; Thereby reduce the reflection of signal; Improve the matching performance of antenna, the standing wave performance improve and radiation effect better.
Embodiment 2:
As shown in Figure 2: as to comprise the orientation of microstrip antenna, be provided with 2 microstrip antennas.
Owing to be provided with 2 microstrip antennas, thus be provided with one 1 minute 2 power splitters (10) make 2 microstrip antenna parallel connections.
For better effect; Be provided with square metal sheet 11 under the centre of two microstrip antennas; Effectively microwave signal is played the effect of guiding into through near sheet metal induction to magnetic field microstrip antenna, thereby reduce the reflection of signal, improve the matching performance of antenna; The standing wave performance improve and radiation effect better.
When containing plural microstrip antenna, 1 fen a plurality of power splitter are set, for example have 3,1 fen 3 power splitter are set, have 4,1 fen 4 power splitter are set.Through power splitter can be effectively a plurality of antenna oscillators and lump together, both realized the high-gain radiation effect, can improve the matching properties of 800-2500MHz again through power splitter, guarantee the radiation efficiency of antenna.
Power splitter one end connects main feeder 13, and the other end connects negative feeder 12.
No matter be 1 microstrip antenna, still 2 or more microstrip antennas, the distance between the adjacent antenna oscillator be centre frequency EWL 0.8-1 doubly.This is apart from through experiment showed, the effective stack that has both guaranteed two or more electromagnetic fields in a large number, and enhancing signal intensity improves gain effect, and it is excessive and produce the ill effect of directional diagram bifurcated to be unlikely to a plurality of antenna distances simultaneously again.
This directional antenna not only can use separately, and can be positioned over the aerial radiation face be to constitute the embellished antenna that combines together with environment in nonmetallic any outer cover.In shot-light, in the mural painting, in the air-conditioning outer cover, in the board billboard of lawn etc.
And when directional antenna contains two said microstrip antennas, reaching best balance in advantages of small volume and gain, this moment, the gain of directional antenna can reach 9-12dBi.Solved sub-district and indoor covering and needed badly and a kind ofly can satisfy undersized requirement, can realize the full frequency band radiation effect of 800-2500MHz again, and can reach the directional antenna problem of the above gain effect of 10dBi.
Claims (12)
1. microstrip antenna; Comprise feed microstrip line part, T type microstrip power divider and microstrip line grounded part; Microstrip line feedback two micro-strip oscillators of part (5) adopt the structure of conical sleeve, it is characterized in that: be respectively equipped with box-shaped compensating plate (1) on two micro-strip oscillators (5).
2. microstrip antenna as claimed in claim 1 is characterized in that: the top of microstrip line grounded part, corresponding two micro-strip oscillators top is provided with rectangle compensating plate (3).
3. according to claim 1 or claim 2 microstrip antenna, it is characterized in that: the middle upper part of T type microstrip power divider is provided with a rectangle compensating plate (2).
4. according to claim 1 or claim 2 microstrip antenna, it is characterized in that: microstrip line grounded part (4) strengthens.
5. microstrip antenna as claimed in claim 3 is characterized in that: microstrip line grounded part (4) strengthens.
6. directional antenna that comprises microstrip antenna; Form by microstrip antenna and reflecting plate; It is characterized in that: at least 1 like the described microstrip antenna of claim 1-5; Be positioned at reflecting plate (6) one ends, connect reflecting plate through support column (14), the area of reflecting plate (6) than all microstrip antennas area bigger.
7. like the described directional antenna that comprises microstrip antenna of the arbitrary claim of claim 6, it is characterized in that: said directional antenna is provided with 1 microstrip antenna.
8. the directional antenna that comprises microstrip antenna as claimed in claim 7 is characterized in that: between said microstrip antenna and reflecting plate, two micro-strip oscillator left-right symmetric positions of microstrip antenna are provided with a square metal sheet (7).
9. like claim 7 or the 8 described microstrip antenna directional antennas that comprise, it is characterized in that: square metal sheet (8) lower right corner is set in the upper left corner of described microstrip antenna square metal sheet (9) is set.
10. the directional antenna that comprises microstrip antenna as claimed in claim 6 is characterized in that: said directional antenna is provided with 2 microstrip antennas, and 2 microstrip antennas are through the parallel connection of 1 minute 2 power splitter (10).
11. directional antenna as claimed in claim 10 is characterized in that: under the centre of described two microstrip antennas, be provided with square metal sheet (11).
12., it is characterized in that like claim 7,8,10, the described directional antenna that comprises microstrip antenna of 11 arbitrary claims: the distance between the adjacent antenna oscillator be centre frequency EWL 0.8-1 doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101581915A CN102655271A (en) | 2012-05-21 | 2012-05-21 | Microstrip antenna and directional antenna comprising same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101581915A CN102655271A (en) | 2012-05-21 | 2012-05-21 | Microstrip antenna and directional antenna comprising same |
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| CN102655271A true CN102655271A (en) | 2012-09-05 |
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| CN2012101581915A Pending CN102655271A (en) | 2012-05-21 | 2012-05-21 | Microstrip antenna and directional antenna comprising same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938505A (en) * | 2012-11-26 | 2013-02-20 | 江苏联海通信技术有限公司 | Cross board antenna |
| CN102938498A (en) * | 2012-11-21 | 2013-02-20 | 江苏联海通信技术有限公司 | Streetlamp 4G (fourth generation) omnidirectional antenna |
| CN106707729A (en) * | 2017-01-11 | 2017-05-24 | 广东小天才科技有限公司 | Intelligent watch |
| CN107579343A (en) * | 2017-08-01 | 2018-01-12 | 华南理工大学 | A kind of single positive polygonal annular circular polarization microstrip antenna of feedback |
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| CN2727986Y (en) * | 2004-08-30 | 2005-09-21 | 西安海天天线科技股份有限公司 | Broadband microstrip base station array antenna |
| KR20060057918A (en) * | 2004-11-24 | 2006-05-29 | 한국전자통신연구원 | Ultra-wideband slot antenna having a semi-circular extension |
| CN101164199A (en) * | 2005-04-26 | 2008-04-16 | 株式会社Emw天线 | Ultra-wideband antenna having a band notch characteristic |
| CN201210521Y (en) * | 2008-05-30 | 2009-03-18 | 上海杰盛通信工程有限公司 | Micro indoor coverage antenna |
| CN101752669A (en) * | 2008-12-12 | 2010-06-23 | 广东盛路通信科技股份有限公司 | Broadband high-efficiency indoor directional antenna |
| CN102064384A (en) * | 2010-11-05 | 2011-05-18 | 哈尔滨工程大学 | Ultra-wideband antenna |
| CN202585739U (en) * | 2012-05-21 | 2012-12-05 | 江苏联海通信技术有限公司 | Micro-strip antenna and directional antenna comprising the same |
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2012
- 2012-05-21 CN CN2012101581915A patent/CN102655271A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2727986Y (en) * | 2004-08-30 | 2005-09-21 | 西安海天天线科技股份有限公司 | Broadband microstrip base station array antenna |
| KR20060057918A (en) * | 2004-11-24 | 2006-05-29 | 한국전자통신연구원 | Ultra-wideband slot antenna having a semi-circular extension |
| CN101164199A (en) * | 2005-04-26 | 2008-04-16 | 株式会社Emw天线 | Ultra-wideband antenna having a band notch characteristic |
| CN201210521Y (en) * | 2008-05-30 | 2009-03-18 | 上海杰盛通信工程有限公司 | Micro indoor coverage antenna |
| CN101752669A (en) * | 2008-12-12 | 2010-06-23 | 广东盛路通信科技股份有限公司 | Broadband high-efficiency indoor directional antenna |
| CN102064384A (en) * | 2010-11-05 | 2011-05-18 | 哈尔滨工程大学 | Ultra-wideband antenna |
| CN202585739U (en) * | 2012-05-21 | 2012-12-05 | 江苏联海通信技术有限公司 | Micro-strip antenna and directional antenna comprising the same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938498A (en) * | 2012-11-21 | 2013-02-20 | 江苏联海通信技术有限公司 | Streetlamp 4G (fourth generation) omnidirectional antenna |
| CN102938505A (en) * | 2012-11-26 | 2013-02-20 | 江苏联海通信技术有限公司 | Cross board antenna |
| CN106707729A (en) * | 2017-01-11 | 2017-05-24 | 广东小天才科技有限公司 | Intelligent watch |
| CN106707729B (en) * | 2017-01-11 | 2022-06-17 | 广东小天才科技有限公司 | Intelligent watch |
| CN107579343A (en) * | 2017-08-01 | 2018-01-12 | 华南理工大学 | A kind of single positive polygonal annular circular polarization microstrip antenna of feedback |
| CN107579343B (en) * | 2017-08-01 | 2023-08-22 | 华南理工大学 | Single-feed positive polygonal annular circularly polarized microstrip antenna |
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Application publication date: 20120905 |