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Cassegrain antenna with scanning function

A Cassegrain antenna and functional technology, applied in the antenna field, can solve the problems of increasing antenna weight and slow scanning speed, and achieve the effect of optimizing antenna structure, large gain, and improving scanning performance

Pending Publication Date: 2020-12-29
重庆两江卫星移动通信有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scanning speed of the mechanical scanning frame is relatively slow, and it will greatly increase the weight of the antenna

Method used

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  • Cassegrain antenna with scanning function
  • Cassegrain antenna with scanning function
  • Cassegrain antenna with scanning function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] Such as figure 1 As shown, a Cassegrain antenna with a scanning function includes a main reflector 1, a secondary reflector 2, and a feed 3, and the feed 3 is a phased array antenna; the phased array antenna includes a plurality of An antenna unit with variable beam; any one of the antenna units is provided with a set of TR components.

[0030] In this solution, the phased array antenna is used to replace the feed 3 of the traditional Cassegrain antenna. The phased array antenna has multiple antenna units that individually match the TR components. Through the superposition of multiple antenna units, the jamming is significantly improved. The gain of the Glenn antenna, and by controlling the amplitude and phase of each unit, the electromagnetic waves superimpose or subtract each other in the far field area after passing through the secondary reflector and the main reflector, so as to control the beam pointing and achieve a wider scanning range. Through the setting of th...

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PUM

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Abstract

The invention discloses a Cassegrain antenna with a scanning function, which comprises a main reflecting surface, an auxiliary reflecting surface and a feed source, and the feed source is a phased-array antenna; the phased-array antenna comprises a plurality of antenna units with variable wave beams; any antenna unit is provided with a set of TR assembly. The invention provides the Cassegrain antenna which can improve the antenna gain and has the advantages of rapid beam transformation and continuous scanning, and through the structural design of the antenna, the structure of the antenna is optimized, the high gain is realized in combination with the structures of the small-scale phased-array antenna and the Cassegrain antenna, and the cost is effectively reduced.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a Cassegrain antenna with a scanning function. Background technique [0002] Antennas play a key role in wireless communication systems, and different communication scenarios have different requirements for antenna performance. For example, in scenarios such as satellite communication systems or real-time tracking and positioning, antennas are required to have characteristics such as high gain and variable beams. Under the premise that the number of radio frequency components is fixed, increasing the gain of the antenna can effectively increase the transmission distance, improve the reliability and stability of transmission, and the variable beam can achieve coverage of different areas and real-time tracking of targets. Usually reflector antennas or array antennas are used in satellite communications to increase gain. [0003] For reflector antennas, such as single reflector antennas, C...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q1/50H01Q15/14H01Q3/28H01Q3/30
CPCH01Q21/00H01Q1/50H01Q15/14H01Q3/28H01Q3/30
Inventor 鲁国林罗超鸣刘金利
Owner 重庆两江卫星移动通信有限公司
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