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C-band broadband circularly polarized single pulse array antenna

An array antenna, circular polarization technology, applied in the direction of antenna, antenna array, resonant antenna, etc., can solve the problem of poor beam symmetry of microstrip antenna, and achieve the effect of light weight, high consistency and short processing cycle

Inactive Publication Date: 2013-01-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of poor beam symmetry of the existing microstrip antenna, the present invention proposes a C-band broadband circularly polarized monopulse array antenna based on the principle of double-layer microstrip antenna and array antenna rotation feeding

Method used

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  • C-band broadband circularly polarized single pulse array antenna
  • C-band broadband circularly polarized single pulse array antenna
  • C-band broadband circularly polarized single pulse array antenna

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The present invention comprises antenna supporting plate 1, bottom microstrip array 2, radiation patch layer 3 and upper cover plate 4, as figure 1 shown. The bottom microstrip array 2 is placed on the bottom layer of the antenna support plate 1, and is pasted together with the bottom metal plate by conductive glue. The upper layer radiation patch 3 is placed directly above the bottom microstrip array 2, with a distance of 3 mm, and fixed on the support plate 1. . The upper cover plate 4 is fixed above the upper radiation patch 3 , and the radiation patch 3 is pressed together. The external bridge is fixed on the back of the antenna support plate 1, and feeds power to ports a and b of the bottom microstrip array 2 through SMA connectors.

[0023] As a preferred embodiment of the present invention, the antenna support plate a...

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Abstract

The invention relates to a C-band broadband circularly polarized single pulse array antenna which is suitable for the technical field of airborne communication. The C-band broadband circularly polarized single pulse array antenna specifically comprises an antenna support plate, a bottom-layer microstrip array, a radiant patch layer and an upper-layer cover plate, wherein the bottom-layer microstrip array is placed on the antenna support plate and stuck with a bottom-layer metal plate together through a conductive adhesive, the radiant patch layer is placed over the bottom-layer microstrip array and fixed on the antenna support plate, the upper-layer cover plate is fixed above the radiant patch layer, used for pressing radiant patches and fixedly connected with a side frame of the antenna support plate through screws, and the incomplete sequential rotation feed way is used for ensuring the broadband and low axis ratio properties of the antenna; and a double-layer antenna structure is adopted for expanding the gain and standing wave bandwidth of the antenna. The invention provides the circularly polarized single pulse array antenna for airborne communication, which has the advantages of low cost, high finished product rate, broad working bandwidth, low axis ratio, light weight, short processing cycle, high gain and capability of meeting the requirements of a beam and difference beam directional diagram.

Description

technical field [0001] The invention relates to a C-band broadband circularly polarized monopulse array antenna, which is suitable for the technical field of airborne communication. Background technique [0002] Microstrip antennas have the characteristics of low profile, light weight, and easy processing, so they have attracted much attention from industry fields and research institutions in recent years. Microstrip array antenna mouth surface distribution can be independently controlled through the microstrip line unequal power distribution network to control the amplitude and phase distribution of its mouth surface, and it is easier to achieve low sidelobe, circular polarization and other characteristics; due to its low profile and light weight , so it is very popular in many special fields, such as portable satellite communication, airborne communication and so on. But at the same time, the microstrip antenna has the disadvantages of low gain (low radiation efficiency),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q9/04H01Q13/08H01Q21/00
Inventor 刘埇李世勇司黎明卢宏达于姗姗吕昕倪鸿宾
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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