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Multiband reflecting surface antenna

A multi-band, double-reflector technology, applied to antennas, devices that enable antennas to work in different bands at the same time, electrical components, etc., to achieve good performance and reduce impact

Active Publication Date: 2015-09-09
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the wide-band work problem of the large-aperture double-reflector antenna, and provides a multi-band reflector antenna

Method used

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Examples

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Embodiment Construction

[0023] refer to figure 1 , the technical solution adopted by the present invention for the Cassegrain antenna is as follows: the low-frequency feed is set at the first focus position of the Cassegrain antenna, and the low-frequency feed points to the main reflector; the mid-frequency feed is set on the rotating circle In the focal plane of the second focal point of the dual-reflector antenna outside the ring and adjacent to the second focal point, the mid-frequency feed is directed to the sub-reflector; On the rotating ring, the axis of the high-frequency feed is parallel to the axis of the main reflector, and the high-frequency feed points to the secondary reflector, and the axis of the rotating ring is parallel to the axis of the main reflector.

[0024] refer to figure 2 , the technical scheme adopted by the present invention for the Gregorian antenna is as follows: the low-frequency feed is set at the first focus position of the Gregorian antenna, and the low-frequency f...

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Abstract

The invention relates to a multiband reflecting surface antenna in the field of antennas. The double reflecting surface antenna comprises a primary reflecting surface and a secondary reflecting surface, and a low-band feed source is arranged at a first focus of the double reflecting surface antenna and points the primary reflecting surface; and a high-band feed source is arranged on a rotating ring passing through a focal plane of a second focus of the double reflecting surface antenna, the axis of the high-band feed source is parallel to that of the primary reflecting surface, the high-band feed source points the secondary reflecting surface, and the rotating axis of the rotating ring is parallel to the axis of the primary reflecting surface. By adopting the scheme, ultra-wide band operation of the reflecting surface antenna is realized, meanwhile, many limitations of a single feed manner are avoided, the working feed source does not interfere with the nonworking feed source, and the invention is suitable for double reflecting surface antennas of Cassegrain, Gregory and the like.

Description

technical field [0001] The invention relates to a multi-band reflector antenna in the field of antennas, which realizes the ultra-wideband operation of the reflector antenna (from decimeter wave to millimeter wave), and avoids many limitations of a single feeding mode. Non-working feed sources do not interfere with each other, and are suitable for dual reflector antennas such as Cassegrain and Gregory. Background technique [0002] Dual-reflector antenna is a typical form of high-gain antenna, which has a wide range of applications in satellite communication, navigation, radio astronomy, radar, radio monitoring and many other fields. [0003] Since the antenna needs to work in broadband or multi-band, and the working frequency band of a single feed is limited, the large-aperture reflector antenna needs to be equipped with multiple feeds to achieve ultra-wideband coverage. Since the antenna can only set the feed at the first focus and the second focus, it is necessary to des...

Claims

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Application Information

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IPC IPC(8): H01Q19/19H01Q5/50
Inventor 杜彪张立军伍洋
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP