CN201490340U - Antenna of broadband corrugated horn feed source with double circular polarization and difference beams - Google Patents
Antenna of broadband corrugated horn feed source with double circular polarization and difference beams Download PDFInfo
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- CN201490340U CN201490340U CN200920187036XU CN200920187036U CN201490340U CN 201490340 U CN201490340 U CN 201490340U CN 200920187036X U CN200920187036X U CN 200920187036XU CN 200920187036 U CN200920187036 U CN 200920187036U CN 201490340 U CN201490340 U CN 201490340U
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Abstract
The utility model relates to an antenna of a broadband corrugated horn feed source with double circular polarization and difference beams. The antenna comprises an antenna body and coaxial probes, wherein the antenna body is cylindrical, the upper part of the antenna body is provided with a corrugated part, and the lower part of the antenna body is provided with a feed part; more than two ring grooves are arranged on the radial direction of the corrugated part in an evenly distributed way, the groove depth of the ring grooves is 1/4 of the wavelength of the center frequency, and the groove width and the groove distance are both smaller than 1/10 of the wavelength of the center frequency; and more than six coaxial probes are evenly arranged on the radial direction of the feed part, the distance of the coaxial probes extending into the antenna body is 1/4 of the wavelength of the center frequency, and the distance between the axial centers of the coaxial probes and the bottom of the corrugated part and the distance between the axial centers of the coaxial probes and the bottom of the feed part are both 1/4 of the wavelength of the center frequency. The utility model adopts the coaxial probes to carry out excitation from the side wall of circular waveguide and realizes favorable circular polarization and difference beams; moreover, the feed mode can be used for a very high frequency band; and the utility model can be used for a broadband double-polarization single-pulse feed source with high frequency band and can realize favorable axial ratio of circular polarization within a range of 60 percent of the frequency band.
Description
Technical field
The utility model relates to a kind of wideband dual polarized pulse feed antenna that can be used for high band.
Background technology
In electronic countermeasures and domain of telemetry, along with the broadband of echo signal, the development of multipolarization, system has higher requirement to autotracking.Traditional broadband autotracking antenna mostly is below the X-band, and more the broadband dual polarization autotracking antenna of high frequency band rarely has report both at home and abroad.At present, double-circle polarization commonly used and difference beam feed antenna are formed the circle battle array by a plurality of linear polarized antennas, carry out the sequence feed and realize circular polarization, the linear polarized antenna of group battle array usefulness adopts logarithm period or Vivaldi antenna more, this group of battle array mode brought two problems: the one,, because changes such as the E face of most linear polarized antennas and H ground roll lobe are difficult to accomplish are so the circular polarization axial ratio is unsatisfactory; The 2nd,, distributing point concentrates on inside, and along with the rising of frequency, distributing point is difficult to be arranged in the space of half-wavelength.
The utility model content
Problem in the space that the circular polarization axial ratio that existing double-circle polarization and difference beam feed antenna exist is undesirable in order to solve, distributing point is difficult to be arranged in half-wavelength, the utility model provides a kind of double-circle polarization and difference beam broadband corrugation horn feed antenna of new construction.
Realize that above-mentioned technical solution is as follows:
Double-circle polarization and difference beam broadband corrugation horn feed antenna comprise antenna body and coaxial probe, and described antenna body is cylindric, and its top is corrugated portion, and the bottom is the feed part;
The footpath of described antenna body upper corrugation part upwards is laid with the annular groove more than two, and the groove depth of described annular groove is 1/4 wavelength of centre frequency, and groove width and separation are all less than 1/10 centre frequency wavelength; The feed of described antenna body bottom part is equipped with six above coaxial probes on radially, the distance that described coaxial probe stretches in the antenna body is 1/4 wavelength of centre frequency, and the coaxial probe axial centre is apart from the corrugated portion bottom and be 1/4 wavelength of centre frequency apart from the distance of feed part bottom;
The diameter of described antenna body upper corrugation part is greater than the diameter of bottom feed part.
The groove width of described antenna body upper corrugation part annular groove and separation are equidistant or unequal-interval.
The feed of described antenna body bottom part is equipped with eight coaxial probes on radially,
The diameter of described antenna body upper corrugation part is the 100-120 millimeter, and the diameter of described antenna body bottom feed part is the 50-70 millimeter.
Useful technique effect of the present utility model embodies in the following areas:
1, good circular polarization and difference beam
The E plane of corrugated horn feed antenna and H plane pattern etc. are changed fine, see feed among Fig. 4 and wave beam, envelope and external envelope are very approaching in it, illustrate that antenna produces good circular polarization lobe figure in very wide angular range, thereby are widely used as the feed in the satellite communication.But conventional corrugated horn all with circular waveguide or square wave guide from the lower curtate feed, so only produce circular polarization and wave beam, the utility model adopts coaxial probe from the excitation of circular waveguide sidewall, sees Fig. 2, has formed good circular polarization and wave beam, difference beam simultaneously; (annotate: and, difference beam needs one and difference beam to form network) circular polarization axial ratio of conventional antenna in the 3dB beamwidth less than 3dB, and this antenna in the 10dB beamwidth less than 3dB, make the circular polarization axial ratio obtain bigger improvement.
2, Xin Ying feeding classification
This feeding classification has been simplified feed structure, has replaced a plurality of antennas with an antenna, can be used for very high frequency range, as X-band even Ku wave band.
The utility model is a kind of wideband dual polarized pulse feed that can be used for high band, can realize good circular polarization axial ratio in 60% frequency band range.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the vertical view of Fig. 1,
Fig. 3 is frequency 4.1GHz～6.9GHz antenna assumption diagram,
Fig. 4 be the utility model 4.1GHz's with beam pattern,
Fig. 5 be the utility model 5.1GHz's with beam pattern,
Fig. 6 be the utility model 6.9GHz's with beam pattern,
Fig. 7 is the difference beam figure of the utility model at 4.1GHz,
Fig. 8 is the difference beam figure of the utility model at 5.1GHz,
Fig. 9 is the difference beam figure of the utility model at 6.9GHz.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done to describe further by embodiment.
Embodiment 1:
Now with frequency 4.1GHz～6.9GHz feed antenna be example the utility model is further described, its centre frequency is 5.5GHz, its antenna size is seen Fig. 3, the actual measurement lobe pattern see Fig. 4～Fig. 9.
Referring to Fig. 1 and Fig. 2, double-circle polarization and difference beam broadband corrugation horn feed antenna comprise antenna body 1 and coaxial probe 2.Antenna body 1 is cylindric, and its top is corrugated portion 3, and the bottom is a feed part 4.The footpath of antenna body 1 upper corrugation part upwards is laid with five annular grooves, and the groove depth of this annular groove is 1/4 wavelength of centre frequency, and its groove width and separation are respectively 5 millimeters all less than 1/10 centre frequency wavelength; And groove width w and separation t are equidistant; The diameter of antenna body 1 upper corrugation part is 120 millimeters.Feed partly is a core content of the present utility model, see Fig. 2, the feed of antenna body 1 bottom part is equipped with eight coaxial probes 2 on radially, the distance that coaxial probe 2 stretches in the antenna body is 1/4 wavelength of centre frequency, be 15 millimeters, coaxial probe 2 axial centre are 1/4 wavelength of centre frequency apart from corrugated portion bottom with apart from the distance of feed part bottom, promptly are respectively 15 millimeters.The diameter of described antenna body 1 bottom feed part will allow the TM of lower frequency limit
01Mould exists, and is 70 millimeters.
That Fig. 4, Fig. 5, Fig. 6 have provided 4.1GHz, 5.1GHz, 6.9GHz three typical frequencies respectively and wave beam, as can be seen from Figure, in ± 60 ° angular range, 4.1GHz, 5.1GHz with wave beam circular polarization axial ratio less than 2dB, 6.9GHz with wave beam circular polarization axial ratio less than 5dB.Fig. 7～Fig. 9 has provided the difference beam of corresponding frequencies, and in ± 60 ° angular range, its circular polarization axial ratio is all less than 5dB.
Embodiment 2:
Referring to Fig. 1, the groove width w of the utility model corrugated portion and separation t also can be gradual changes, determine according to the bandwidth needs.
Its feed partly adopts six coaxial probe feeds.
Claims (4)
1. double-circle polarization and difference beam broadband corrugation horn feed antenna comprise antenna body and coaxial probe, and described antenna body is cylindric, and its top is corrugated portion, and the bottom is the feed part, it is characterized in that:
The footpath of described antenna body upper corrugation part upwards is laid with the annular groove more than two, and the groove depth of described annular groove is 1/4 wavelength of centre frequency, and groove width and separation are all less than 1/10 centre frequency wavelength; The feed of described antenna body bottom part is equipped with six above coaxial probes on radially, the distance that described coaxial probe stretches in the antenna body is 1/4 wavelength of centre frequency, and the coaxial probe axial centre is apart from the corrugated portion bottom and be 1/4 wavelength of centre frequency apart from the distance of feed part bottom;
The diameter of described antenna body upper corrugation part is greater than the diameter of bottom feed part.
2. double-circle polarization according to claim 1 and difference beam broadband corrugation horn feed antenna is characterized in that: the groove width of described antenna body upper corrugation part annular groove and separation are equidistant or unequal-interval.
3. double-circle polarization according to claim 1 and difference beam broadband corrugation horn feed antenna is characterized in that: the feed of described antenna body bottom part is equipped with eight coaxial probes on radially.
4. double-circle polarization according to claim 1 and difference beam broadband corrugation horn feed antenna is characterized in that: the diameter of described antenna body upper corrugation part is the 100-120 millimeter, and the diameter of described antenna body bottom feed part is the 50-70 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920187036XU CN201490340U (en) | 2009-08-20 | 2009-08-20 | Antenna of broadband corrugated horn feed source with double circular polarization and difference beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920187036XU CN201490340U (en) | 2009-08-20 | 2009-08-20 | Antenna of broadband corrugated horn feed source with double circular polarization and difference beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490340U true CN201490340U (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920187036XU Expired - Lifetime CN201490340U (en) | 2009-08-20 | 2009-08-20 | Antenna of broadband corrugated horn feed source with double circular polarization and difference beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626113B (en) * | 2009-08-20 | 2012-11-21 | 中国电子科技集团公司第三十八研究所 | Double-circle polarization and difference beam broadband corrugation horn feed antenna |
-
2009
- 2009-08-20 CN CN200920187036XU patent/CN201490340U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626113B (en) * | 2009-08-20 | 2012-11-21 | 中国电子科技集团公司第三十八研究所 | Double-circle polarization and difference beam broadband corrugation horn feed antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100526 Effective date of abandoning: 20090820 |
|
| RGAV | Abandon patent right to avoid regrant |