Flat plate array antenna for X frequency band

An array antenna and flat panel technology, applied in the field of flat panel array antennas, can solve the problems of low communication front-end aperture efficiency, heavy panel antenna weight, thick antenna array thickness, etc., and achieves the effects of easy processing, strong applicability, and reduced processing difficulty.

Active Publication Date: 2018-07-24
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the communication front-end in the form of a reflecting surface has low diameter efficiency, large volume, uncontrollable side lobes, and poor side lobes in the far area.
However, the various forms of panel antennas currently reported have low aperture efficiency (less than 65%) and relatively large volume. When circular polarization is required, the thickness of the antenna array will be thicker.
In addition, the weight of panel antennas in current applications has always been the biggest problem, which is difficult to overcome

Method used

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  • Flat plate array antenna for X frequency band
  • Flat plate array antenna for X frequency band
  • Flat plate array antenna for X frequency band

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Embodiment Construction

[0028] figure 1 A schematic diagram of the structure of a flat-panel array antenna for X-band provided by an embodiment of the present invention; FIG. 2(a) is a schematic structural diagram of a circularly polarized cover provided by an embodiment of the present invention; image 3 A schematic structural diagram of an antenna array unit provided by an embodiment of the present invention; Figure 3-1 It is a schematic structural diagram of a cross radiator slot provided in an embodiment of the present invention.

[0029] like figure 1 , Figure 2(a), image 3 and Figure 3-1 As shown, the flat-panel array antenna for X-band includes: a plurality of antenna array units, wherein the plurality of antenna array units are arranged in m columns and n rows, wherein m is greater than 2, and n is greater than 2;

[0030] Each antenna array unit includes a circular polarized mask 1, a tuned air cavity 2, a cross radiator slot 3, a waveguide mode transmission cavity 4, a square quadrat...

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Abstract

The invention discloses a flat plate array antenna for X frequency band, comprising a plurality of antenna array units. Each antenna array unit comprises a circularly-polarized cover, a tuning air cavity, a cross radiator slit, a waveguide mode type transmission cavity body, a square orthogonal mode coupler, a first strip line input terminal, and a second strip line input terminal. The tuning aircavity is disposed at the upper part of the cross radiator slit. Each slit of the cross radiator slit is arranged in a rotating manner at an interval of 90 D. The waveguide mode transmission cavity body is disposed at the lower part of the cross radiator slit. The square orthogonal mode coupler is disposed at the lower part of the waveguide mode transmission cavity body. The first strip line inputterminal is disposed at one side face of the square orthogonal mode coupler, and the second strip line input terminal is disposed at the other side face of the square orthogonal mode coupler, whereinthe two side faces are adjacent. The antenna array of the invention is advantageous in that efficiency is high, cross section is low, gain is high, wave beam is narrow, processing is easy.

Description

technical field [0001] The invention relates to a flat-panel array antenna for X-band, which can be used as the front end of a static-in-pass and a-in-motion system at the ground end of an X-band satellite communication system, and belongs to the technical field of microwave antennas. Background technique [0002] At present, the application of X-band in the field of satellite-to-earth communication still has a good electromagnetic environment, and it is not easy to be interfered by ground systems. And the confidentiality is good, and the X-band communication system adopted by the Voyager system satellites in the United States can still work normally. The X-band panel antenna invented in this patent specification is used in the field of small satellite measurement and control that has been booming in my country. With the help of the panel antenna's high aperture efficiency, a single X-band panel antenna can control and data satellites at any point on the ground. Recycling, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q15/24H01Q21/00H01Q21/06H01Q21/30H01Q23/00
CPCH01Q1/36H01Q1/50H01Q15/24H01Q21/0006H01Q21/061H01Q21/30H01Q23/00
Inventor 史永康李鹏飞
Owner BEIJING RES INST OF TELEMETRY
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