CN203039112U - Square short backfire antenna - Google Patents
Square short backfire antenna Download PDFInfo
- Publication number
- CN203039112U CN203039112U CN 201220734226 CN201220734226U CN203039112U CN 203039112 U CN203039112 U CN 203039112U CN 201220734226 CN201220734226 CN 201220734226 CN 201220734226 U CN201220734226 U CN 201220734226U CN 203039112 U CN203039112 U CN 203039112U
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- square
- antenna
- reflection cavity
- balancer
- short backfire
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Abstract
The utility model discloses a square short backfire antenna and relates to the field of microwave communication and radio monitoring. The square short backfire antenna comprises a dipole, a balancer and a reflection cavity. The dipole is parallel to the bottom surface of the reflecting cavity and is supported by the balancer in the reflection cavity. The upper part of the dipole is provided with a reflection plate which is parallel to the dipole. The reflection cavity is a square with rounded corners, and the center of the bottom of the reflection cavity is provided with a circular groove. The antenna is the square short backfire antenna with dual polarization dipole excitation and can be changed into a dual circular polarization antenna if a 90-degree electric bridge is added. The square short backfire antenna has the advantages of compact structure and high efficiency which is larger than 80%. The antenna can be used as an antenna alone and also is suitable for being used as an array unit to form an array antenna. In the process of array formation, since the cavity is square, the space can be utilized fully, and a mutual coupling effect between units can be reduced.
Description
Technical field
The utility model is the short back reflection microwave antenna of the square bore of a kind of high efficiency, is applicable to that satellite-signal receives, radio signal is monitored and microwave telecommunication system.
Background technology
Short back reflection microwave antenna is because it has high efficiency, and the characteristics of compact conformation and being favored can be used for microwave communication, navigation, radar, observing and controlling, satellite-signal and receive many fields such as microwave signal monitoring.Short backfire antenna belongs to resonant aerial, and antenna efficiency is relevant with antenna structure and size.The circular reflection cavity short backfire antenna of gain about 15dBi is easier to design and makes, and antenna aperture is about two wavelength.If require the gain of antenna high again, antenna aperture will increase, and also will adopt other measure to improve the efficient of short backfire antenna or not increase antenna aperture and use long backfire antenna form.Do not having under the situation of specific (special) requirements, short backfire antenna generally adopts circular bore, and reflection cavity is when being square bore, must redesign, just can reach the efficient the same with the circular aperture short backfire antenna.
The utility model content
The technical problems to be solved in the utility model is to have proposed a kind of high efficiency square bore short backfire antenna.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of square short backfire antenna comprises symmetrical dipole, balancer and reflection cavity; Symmetrical dipole is parallel to the bottom surface of reflection cavity, is supported by the balancer that is located in the reflection cavity; The top of symmetrical dipole is provided with parallel with it reflecting plate; It is characterized in that: the cross section of described reflection cavity is square for the band fillet, and its bottom centre is provided with a circular groove.
Wherein, the width of described square reflection cavity is 1.99 λ～2.1 λ, highly is 0.45 λ～0.5 λ, and radius of corner is 0.76 λ～0.79 λ; The internal diameter of circular groove is 1.56 λ～1.575 λ, and the degree of depth is 0.11 λ～0.12 λ; Wherein, λ is the wavelength of working frequency range centre frequency.
Wherein, described symmetrical dipole is cylindrical, and along the diagonal setting of square reflection cavity bore, its diameter is 0.057 λ, and length is 0.4 λ～0.43 λ; Wherein, λ is the wavelength of working frequency range centre frequency.
Wherein, described reflecting plate is made up of the circular slab below two end faces that support and be positioned at balancer by balancer up and down; The diameter of top circular slab is 0.43 λ～0.45 λ, is 0.58 λ～0.62 λ apart from the height of circular groove bottom surface; The diameter of following circular slab is 0.52 λ～0.55 λ, is 0.66 λ～0.69 λ apart from circular groove bottom surface height, and wherein, λ is the wavelength of working frequency range centre frequency.
Wherein, described balancer comprises the metal cylinder of two same diameter, and the centre-to-centre spacing of two cylinders is 0.048 λ, and one of them cylinder is worn the outer conductor of coaxial line in being, wherein, λ is the wavelength of working frequency range centre frequency.
Wherein, described coaxial line is the hard coaxial line of impedance 50 Ω, and its inner wire links to each other with another metal cylinder by the aperture on the outer conductor, and the terminal of coaxial line is provided with in order to adjust the short-circuit block of antenna standing wave.
The beneficial effect that adopts technique scheme to produce is: the utility model is the short backfire antenna of a kind of two-wire polarization oscillator excitation, if add that 90 ° of electric bridges then can be changed into dual circularly polarized antenna.The utility model compact conformation has very high efficient, surpasses 80%.Both can use as antenna separately, and also be well suited for forming array antenna as unit in the array.In when battle array group, because that cavity makes is square, can take full advantage of the space, also can reduce the mutual coupling effect between the unit.
The utility model is compared with background technology has following advantage: (1) places the position of excitation symmetrical dipole dexterously owing to improved coaxial back of the body cavity configuration, has reached the high efficiency the same with the circular aperture short backfire antenna; (2) can satisfy some specific (special) requirements to the space; (3) be fit to form antenna array, and can take full advantage of the space, reduce inter-element mutual coupling; (4) terminal at coaxial line has increased short-circuit block, can make the antenna standing wave adjust to the best.
Description of drawings
Fig. 1 is structure cutaway view of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Among the figure, 1, symmetrical dipole, 2, balancer, 3, coaxial line, 4, reflection cavity, 5, reflecting plate.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
See Fig. 1, Fig. 2.A kind of square short backfire antenna comprises symmetrical dipole 1, balancer 2 and reflection cavity 4; Reflection cavity 4 is square for the band fillet, and its width is 1.99 λ～2.1 λ, highly is 0.45 λ～0.5 λ, and radius of corner is 0.76 λ～0.79 λ; The bottom centre of reflection cavity 4 is provided with a circular groove, and its internal diameter is 1.56 λ～1.575 λ, and the degree of depth is 0.11 λ～0.12 λ.Wherein, λ is the wavelength of working frequency range centre frequency.
Symmetrical dipole 1 is cylindrical, is supported by the balancer 2 that is located in the reflection cavity 4, and its diameter is 0.057 λ, and length is 0.4 λ～0.43 λ; Symmetrical dipole 1 is along the diagonal setting of square reflection cavity 4 bores, and is parallel to the bottom surface of reflection cavity 4.
The top of symmetrical dipole 1 is provided with parallel with it reflecting plate 5; Reflecting plate 5 is made up of the circular slab below two end faces that support and be positioned at balancer 2 by balancer 2 up and down; The diameter of top circular slab is 0.43 λ～0.45 λ, is 0.58 λ～0.62 λ apart from the height of circular groove bottom surface; The diameter of following circular slab is 0.52 λ～0.55 λ, is 0.66 λ～0.69 λ apart from circular groove bottom surface height, and wherein, λ is the wavelength of working frequency range centre frequency.
Claims (6)
1. a square short backfire antenna comprises symmetrical dipole (1), balancer (2) and reflection cavity (4); Symmetrical dipole (1) is parallel to the bottom surface of reflection cavity (4), is supported by the balancer (2) that is located in the reflection cavity (4); The top of symmetrical dipole (1) is provided with parallel with it reflecting plate (5); It is characterized in that: the cross section of described reflection cavity (4) is square for the band fillet, and its bottom centre is provided with a circular groove.
2. a kind of square short backfire antenna according to claim 1, it is characterized in that: the width of described square reflection cavity (4) is 1.99 λ～2.1 λ, highly is 0.45 λ～0.5 λ, radius of corner is 0.76 λ～0.79 λ; The internal diameter of circular groove is 1.56 λ～1.575 λ, and the degree of depth is 0.11 λ～0.12 λ; Wherein, λ is the wavelength of working frequency range centre frequency.
3. a kind of square short backfire antenna according to claim 1 is characterized in that: described symmetrical dipole (1) is for cylindrical, and along the diagonal setting of square reflection cavity (4) bore, its diameter is 0.057 λ, and length is 0.4 λ～0.43 λ; Wherein, λ is the wavelength of working frequency range centre frequency.
4. a kind of square short backfire antenna according to claim 1 is characterized in that: described reflecting plate (5) is made up of two following circular slabs of end face that support and be positioned at balancer (2) by balancer (2) up and down; The diameter of top circular slab is 0.43 λ～0.45 λ, is 0.58 λ～0.62 λ apart from the height of circular groove bottom surface; The diameter of following circular slab is 0.52 λ～0.55 λ, is 0.66 λ～0.69 λ apart from circular groove bottom surface height, and wherein, λ is the wavelength of working frequency range centre frequency.
5. a kind of square short backfire antenna according to claim 1, it is characterized in that: described balancer (2) comprises the metal cylinder of two same diameter, the centre-to-centre spacing of two cylinders is 0.048 λ, one of them cylinder is worn the outer conductor of coaxial line (3) in being, wherein, λ is the wavelength of working frequency range centre frequency.
6. a kind of square short backfire antenna according to claim 5, it is characterized in that: described coaxial line (3) is the hard coaxial line of impedance 50 Ω, its inner wire links to each other with another metal cylinder by the aperture on the outer conductor, and the terminal of coaxial line (3) is provided with in order to adjust the short-circuit block of antenna standing wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734226 CN203039112U (en) | 2012-12-28 | 2012-12-28 | Square short backfire antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734226 CN203039112U (en) | 2012-12-28 | 2012-12-28 | Square short backfire antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039112U true CN203039112U (en) | 2013-07-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734226 Expired - Fee Related CN203039112U (en) | 2012-12-28 | 2012-12-28 | Square short backfire antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039112U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200193A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Collinear antenna array composed of novel monopole antennas and composite antenna array |
| CN111200192A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Orthogonal antenna array and composite antenna array formed by novel monopole antennas |
| CN111200194A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Area antenna array composed of novel monopole antenna |
| CN112467351A (en) * | 2020-11-19 | 2021-03-09 | 中国电子科技集团公司第二十九研究所 | Multi-resonance excitation back cavity antenna |
-
2012
- 2012-12-28 CN CN 201220734226 patent/CN203039112U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200193A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Collinear antenna array composed of novel monopole antennas and composite antenna array |
| CN111200192A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Orthogonal antenna array and composite antenna array formed by novel monopole antennas |
| CN111200194A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Area antenna array composed of novel monopole antenna |
| CN112467351A (en) * | 2020-11-19 | 2021-03-09 | 中国电子科技集团公司第二十九研究所 | Multi-resonance excitation back cavity 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: 20130703 Termination date: 20211228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |