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Design method of W-wave band single-pulse Cassegrain antenna

A technology of a Cassegrain antenna and a design method, which is applied in the design field of the W-band monopulse Cassegrain antenna, can solve the problems of sensitivity to fluctuation of echo amplitude, large antenna feed loss, large tracking error, etc. Sensitive to fluctuation of echo amplitude, narrow beam, short wavelength effect

Inactive Publication Date: 2012-12-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] In order to overcome the shortcomings of traditional conical scanning and sequential beam switching, which are sensitive to echo amplitude fluctuations, large tracking errors, large feed loss of W-band planar microstrip array antennas, and difficult to integrate with the system, a W-band single-pulse jam is proposed. Glenn antenna design method

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  • Design method of W-wave band single-pulse Cassegrain antenna
  • Design method of W-wave band single-pulse Cassegrain antenna
  • Design method of W-wave band single-pulse Cassegrain antenna

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Embodiment Construction

[0029] In order to better illustrate the purpose and advantages of the present invention, the content of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The implementation of the present invention takes the design process of the 92-94GHz monopulse Cassegrain antenna of 135mm caliber as an example to specifically illustrate the content of the present invention, and its steps are:

[0031] Step 1. Determine the diameter of the main reflection surface of the Cassegrain antenna according to the gain requirements of the target detection device and the aperture of the detection device. Due to different purposes and operating distances, target detection devices have different requirements for antenna gain. For example, long-range ground target detection devices often require antennas with high gain due to the need for a larger detection distance, while sea surface target terminal guidance detection ...

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Abstract

The invention provides a design method of a W-wave band single-pulse Cassegrain antenna. The design method comprises the following steps of: 1, determining diameter of a main reflecting surface of a Cassegrain antenna according to the demand of a target detection device on gain and caliber of the detection device; 2, determining a focal diameter ratio of the main reflecting surface of the Cassegrain antenna according to demands of the target detection device on the overall volume of the antenna and system noise; 3, determining the diameter and equation of a secondary reflecting surface of the Cassegrain antenna according to the demands of the target detection device on the side lobe of the antenna and 3bB wave beam width; 4, determining elongation and trumpet angle of a trumpet body at the front end of a feed source according to a single-pulse detection system and the secondary reflecting surface of the Cassegrain antenna; 5, determining a turning waveguide body at the rear end of the feed source of the Cassegrain antenna according to the demands of the target detection device on the feed source thickness and the rear end structure design; 6, designing a sum-difference network according to the single-pulse system and the feed source, and 7, assembling and forming the single-pulse Cassegrain antenna, and finally finishing design of the W-wave band single-pulse Cassegrain antenna.

Description

technical field [0001] The invention relates to a design method of a W-band monopulse Cassegrain antenna, belonging to the technical field of target detection. Background technique [0002] The W-band is an important window of the millimeter-wave frequency band, featuring all-weather and high-resolution. It has its own inherent characteristics: short wavelength, wide frequency band, and interaction with the atmosphere. Due to its short wavelength, the W-band equipment has the advantages of small size, light weight, and good maneuverability. These advantages are exactly what precision-guided weapons and various aircraft must have. At the same time, under the same caliber antenna, the short wavelength can realize Narrow beam and low sidelobe, which can provide extremely high accuracy and good resolution, and can also improve detection accuracy and tracking ability at low elevation angles; wide frequency band can reduce multipath effects and clutter effects, making the system'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/19H01Q13/02
Inventor 孙厚军郑沛赵国强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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