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Planar antenna array of Ka frequency band

A flat-panel antenna array and frequency band technology, which is applied in the direction of antenna array, antenna, electrical components, etc., can solve the problems of low communication front-end diameter efficiency, thick antenna array, and heavy weight of flat-panel antenna, etc., and achieve easy processing, narrow beam, high buff effect

Active Publication Date: 2014-12-10
BEIJING RES INST OF TELEMETRY +1
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  • 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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  • Planar antenna array of Ka frequency band
  • Planar antenna array of Ka frequency band
  • Planar antenna array of Ka frequency band

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Embodiment Construction

[0045] Below in conjunction with accompanying drawing, working process and working principle of the present invention are further explained:

[0046] like figure 1 As shown, a Ka-band panel antenna array includes: a first-layer waveguide power distribution network, a second-layer waveguide power distribution network, and a horn radiator: wherein the first-layer waveguide power distribution network and the second-layer waveguide power distribution network are composed of Multiple waveguide E-plane T-shaped structures are cascaded; the number of horn radiators corresponds to the number of waveguide E-plane T-shaped structures; each waveguide E-plane T-shaped structure has two output ports, and the horn radiator has two an input terminal;

[0047] The two waveguide input ends of the horn radiator are respectively connected to the output ports of the waveguide E-plane T-shaped structure in the first-layer waveguide power distribution network and the second-layer waveguide power d...

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Abstract

The invention relates to a planar antenna array of an Ka frequency band. The planar antenna array comprises a first-layer waveguide power distribution network, a second-layer waveguide power distribution network, and loudspeaker radiators, wherein the first-layer waveguide power distribution network and the second-layer waveguide power distribution network are formed by cascading a plurality of waveguide E-face T-shaped structures, the number of the loudspeaker radiators corresponds to that of the waveguide E-face T-shaped structures, each waveguide E-face T-shaped structure is provided with two output ends, each loudspeaker radiator is provided with two input ends, and the two waveguide input ends of each loudspeaker radiator are connected with output ports of each waveguide E-face T-shaped structure of the e first-layer waveguide power distribution network and the second-layer waveguide power distribution network. The planar antenna array has the advantages of high efficiency, low profile, high gain, narrow beam, easiness to process, wide frequency band and the like.

Description

technical field [0001] The invention relates to a flat panel antenna array of Ka frequency band, which can be used as the front end of static communication and dynamic communication system at the ground end of Ka frequency band satellite communication system, and belongs to the technical field of microwave antennas. Background technique [0002] At present, satellite communication technology using Ka-band has advantages that other frequency bands do not have. For example, compared with traditional Ku-band communication satellites, the number of communication nodes that Ka-band satellites can support is much larger than that of Ku-band. Moreover, Ka-band communication satellites have 4 times the communication bandwidth of Ku-band satellites. After the communication satellites working in the Ka frequency band adopt spot beams, a single spot beam can cover an area with a radius of 250km to 1000km, provide 10 to 25 times frequency multiplexing, and support smaller terminal equip...

Claims

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Application Information

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IPC IPC(8): H01Q13/02H01Q21/00
CPCH01Q21/064
Inventor 史永康李鹏飞王奇伟刘昊
Owner BEIJING RES INST OF TELEMETRY
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