CN213278388U - S, C wave band dual-frequency radar jammer antenna - Google Patents
S, C wave band dual-frequency radar jammer antenna Download PDFInfo
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- CN213278388U CN213278388U CN202022401140.3U CN202022401140U CN213278388U CN 213278388 U CN213278388 U CN 213278388U CN 202022401140 U CN202022401140 U CN 202022401140U CN 213278388 U CN213278388 U CN 213278388U
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Abstract
An S, C waveband double-frequency radar jammer antenna comprises a main reflecting surface, an auxiliary reflecting surface and a first feed source, wherein the distance between the focus of the first feed source and the second focus is 40 mm; the distance between the focus of the second feed source and the second focus is 10 mm; and the focal points of the first feed source and the second feed source are distributed on two sides of the second focal point, and the focal points of the first feed source and the second feed source are collinear with the second focal point. Adopt two independent double feed source designs, and the double feed source is the offset feed setting, not only can solve the isolation problem of combination feed source, cooperation ring focal antenna simultaneously, can guarantee that antenna gain and beam broadband homoenergetic satisfy the index requirement, through outer guide data, control servo revolving stage drive antenna and rotate, guarantee that the antenna can stably shine under narrow beam width by the interference target object, realize the promotion to current equipment effective radiation power, satisfy experimental and training task demand.
Description
The technical field is as follows:
the utility model belongs to the technical field of the radar, what mainly related to is an S, C wave band dual-frenquency radar jammer antenna.
Background art:
in a test training task, an S-band or C-band radar interference device generally adopts a medium-low power transmitter to improve the mobility, and adopts a wide beam to meet the requirement of regional coverage interference. In practical application, the radar interference device has wide wave beams and limited radiation distance, is difficult to simulate a high-power radar interference source released at a long distance, and has limited capability of simulating S, C wave band complex electromagnetic environment.
The utility model has the following contents:
in order to overcome foretell not enough, the utility model provides an S, C wave band dual-frenquency radar jammer antenna is applied to S, C wave band radar jamming equipment effective radiation power's promotion, satisfies the remote demand that founds the complicated electromagnetic signal environment of S, C frequency channels in the experimental training.
The utility model provides a technical scheme that its technical problem adopted:
an S, C waveband dual-frequency radar jammer antenna comprises
The main reflecting surface is provided with a central axis AN and is formed by rotating AN arc BP around the central axis AN for a circle;
the auxiliary reflecting surface is formed by rotating AN elliptic arc TM around a central axis AN for a circle, one focus of AN ellipse where the elliptic arc TM is located is superposed with the focus of AN arc BP to form a first focus, and the other focus of the ellipse where the elliptic arc TM is located is a second focus;
the distance between the focus of the first feed source and the second focus is 40 mm;
the distance between the focus of the second feed source and the second focus is 10 mm;
and the focal points of the first feed source and the second feed source are distributed on two sides of the second focal point, and the focal points of the first feed source and the second feed source are collinear with the second focal point.
The first feed source and the second feed source are ridged horn antennas.
The first feed source is a low-frequency band S feed source, and the frequency band of the low-frequency band S feed source is 2GHz-4 GHz.
The second feed source is a high-frequency band C feed source, and the frequency band of the high-frequency band C feed source is 4GHz-8 GHz.
The tail parts of the first feed source and the second feed source are provided with feed source polarization joints, so that the polarization mode of the antenna is switched among horizontal polarization, vertical polarization and oblique polarization.
And the base of the main reflecting surface is provided with an azimuth and elevation servo joint.
Due to the adoption of the technical scheme, the utility model discloses have following superiority:
the utility model provides a pair of S, C wave band dual-frenquency radar jammer antenna, adopt two independent dual feed designs, and the dual feed is the offset feed setting, not only can solve the isolation problem of combination feed, cooperate the ring focal antenna simultaneously, can guarantee that antenna gain and beam broadband homoenergetic satisfy the index requirement, through outer guide data, control servo revolving stage drive antenna rotates, guarantee that the antenna can stably shine under narrow beam width by the interference target object, realize the promotion to current equipment effective radiation power, satisfy experimental and training task demand.
Description of the drawings:
fig. 1 is a cross-sectional view of the present invention;
fig. 2 is an antenna pattern when the S feed is 2GHz, the C feed is 8GHz, and phi =0 °;
fig. 3 is an antenna pattern for an S feed of 2GHz, a C feed of 8GHz, and phi =90 °;
in the figure: 1. a main reflective surface; 2. a first feed source; 3. a second feed source; 4. a sub-reflecting surface; 5. a first focal point; 6. a second focal point.
The specific implementation mode is as follows:
the present invention will be explained in more detail by the following examples, which are intended to protect all the changes and improvements within the scope of the present invention, and are not limited to the following examples;
the S, C waveband dual-band radar jammer antenna described in the attached drawings comprises a main reflecting surface 1, wherein the main reflecting surface 1 is provided with a central axis AN, and the main reflecting surface 1 is formed by rotating AN arc BP around the central axis AN for a circle; the auxiliary reflecting surface 4 is formed by rotating AN elliptic arc TM around a central axis AN for a circle, one focus of AN ellipse where the elliptic arc TM is located is superposed with a focus of AN arc BP to form a first focus 5, and the other focus of the ellipse where the elliptic arc TM is located is a second focus 6; in fact, the main reflecting surface 1 and the sub reflecting surface 4 form a ring focal antenna, and fig. 1 shows only a cross section, so that only one first focal point 5 is shown, and if the first focal point 5 is rotated by one circle according to the central axis AN, the track of the first focal point 5 encloses a circular ring;
the first feed source 2 is a low-frequency band S feed source, the frequency band of the low-frequency band S feed source is 2GHz-4GHz, and the distance between the focus O1 of the first feed source 2 and the second focus 6 is 40 mm;
the second feed source 3 is a high-frequency band C feed source, the frequency band of the high-frequency band C feed source is 4GHz-8GHz, and the distance between the focus O2 of the second feed source 3 and the second focus 6 is 10 mm;
wherein the focal point O1 of the first feed 3 and the focal point O2 of the second feed 4 are distributed on two sides of the second focal point 6, and the focal point O1 of the first feed 2 and the focal point O2 of the second feed 3 are collinear with the second focal point 6.
The first feed source 2 and the second feed source 3 are ridged horn antennas, and high gain of the antennas can be guaranteed.
The system adopts an offset feed design, takes a 4.5-meter caliber parabolic antenna as an example, a low-frequency S feed source sets 2GHz radiation frequency, and a high-frequency C feed source sets 8GHz radiation frequency for simulation.
According to fig. 2 and 3, the utility model adopts independent low-frequency S feed source and high-frequency C feed source, the dual-frequency combined feed source solves the problem of port isolation, and two paths of feed sources are designed according to the design mode, namely the distance between the focus O1 of the low-frequency S feed source and the second focus 6 is 40 mm; the distance between the focus O2 of the high-frequency band C feed source and the second focus 6 is 10mm, the gain of the low-frequency antenna is 36.26dB, the gain of the high-frequency antenna is 48.08dB, and the two are both greater than the minimum requirement of the antenna gain of 36 dB, so that the design requirement of the antenna can be met.
The tail parts of the first feed source 2 and the second feed source 3 are provided with feed source polarization joints, so that the polarization mode of the antenna is switched among horizontal polarization, vertical polarization and oblique polarization.
The base of the main reflecting surface 1 is provided with an azimuth and elevation servo joint.
And acquiring radar external guide data sent by the network switch, and controlling the rotation of the azimuth joint and the pitching joint of the pitching servo joint according to the information such as the position, the azimuth angle, the antenna posture and the like sent by the GPS of the antenna and the shaft angle encoder, so that the antenna accurately points to the target position and tracks in real time. According to task requirements; and the feed source polarization joint is controlled, so that the polarization mode of the antenna can be switched among horizontal polarization, vertical polarization and oblique polarization at will.
The details of the above are not described in detail since they are prior art.
Claims (6)
1. An S, C waveband double-frequency radar jammer antenna, characterized by: comprises that
The main reflecting surface is provided with a central axis AN and is formed by rotating AN arc BP around the central axis AN for a circle;
the auxiliary reflecting surface is formed by rotating AN elliptic arc TM around a central axis AN for a circle, one focus of AN ellipse where the elliptic arc TM is located is superposed with the focus of AN arc BP to form a first focus, and the other focus of the ellipse where the elliptic arc TM is located is a second focus;
the distance between the focus of the first feed source and the second focus is 40 mm;
the distance between the focus of the second feed source and the second focus is 10 mm;
and the focal points of the first feed source and the second feed source are distributed on two sides of the second focal point, and the focal points of the first feed source and the second feed source are collinear with the second focal point.
2. The S, C-band dual-band radar jammer antenna of claim 1, wherein: the first feed source and the second feed source are ridged horn antennas.
3. The S, C-band dual-band radar jammer antenna of claim 2, wherein: the first feed source is a low-frequency band S feed source, and the frequency band of the low-frequency band S feed source is 2GHz-4 GHz.
4. The S, C-band dual-band radar jammer antenna of claim 1, wherein: the second feed source is a high-frequency band C feed source, and the frequency band of the high-frequency band C feed source is 4GHz-8 GHz.
5. The S, C-band dual-band radar jammer antenna of claim 1 or 2, wherein: the tail parts of the first feed source and the second feed source are provided with feed source polarization joints, so that the polarization mode of the antenna is switched among horizontal polarization, vertical polarization and oblique polarization.
6. The S, C-band dual-band radar jammer antenna of claim 1, wherein: and the base of the main reflecting surface is provided with an azimuth and elevation servo joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022401140.3U CN213278388U (en) | 2020-10-26 | 2020-10-26 | S, C wave band dual-frequency radar jammer antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022401140.3U CN213278388U (en) | 2020-10-26 | 2020-10-26 | S, C wave band dual-frequency radar jammer antenna |
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| Publication Number | Publication Date |
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| CN213278388U true CN213278388U (en) | 2021-05-25 |
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| CN202022401140.3U Expired - Fee Related CN213278388U (en) | 2020-10-26 | 2020-10-26 | S, C wave band dual-frequency radar jammer antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258284A (en) * | 2021-06-10 | 2021-08-13 | 中国人民解放军海军工程大学 | High-power microwave ring-focus dual-reflector antenna |
| WO2024031929A1 (en) * | 2022-08-10 | 2024-02-15 | 胡关平 | Bifocal combined parabolic antenna |
-
2020
- 2020-10-26 CN CN202022401140.3U patent/CN213278388U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258284A (en) * | 2021-06-10 | 2021-08-13 | 中国人民解放军海军工程大学 | High-power microwave ring-focus dual-reflector antenna |
| CN113258284B (en) * | 2021-06-10 | 2021-11-23 | 中国人民解放军海军工程大学 | High-power microwave ring-focus dual-reflector antenna |
| WO2024031929A1 (en) * | 2022-08-10 | 2024-02-15 | 胡关平 | Bifocal combined parabolic antenna |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 Termination date: 20211026 |