Multilayer feed network

A feeder network and feeder technology, applied in the field of microwave antennas, can solve the problems of high structural complexity and difficult implementation, and achieve the effects of good electromagnetic compatibility, high isolation, and improved radio frequency signal transmission performance.

Active Publication Date: 2017-06-23
BEIJING INST OF SPACECRAFT SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] a. For applications where phased array antennas have multiple beams, the existing microstrip feed network has a high structural complexity and is difficult to implement

Method used

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  • Multilayer feed network
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] The stripline power divider in this example is made of Rogers6002 material lamination process, the conductive adhesive film is GC280, the diameter of the flexible feeder is 0.66mm, and the shell of the multilayer feeder network is made of aluminum alloy. The overall size of the four-beam multi-layer feed network is 440mm×84mm×6mm, the isolation between channels is greater than 50dB, and the isolation between beams is greater than 60dB. It has been verified that compared with the microstrip form, the thickness is reduced by 6mm; compared with the waveguide form, the thickness is reduced by 12mm, and the width is reduced by 10mm, which can meet the small size of a spaceborne four-beam phased array antenna. , High isolation requirements.

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Abstract

A multilayer feed network is used to transmit and distribute multiple paths of microwave signals, and has functions including power distribution, power synthesis, signal isolation and interference resistance. The network structurally comprises a feed network frame, a strip line power divider, flexible feed lines, transitional microstrips, a K type connector, a cover plate of a power divider cavity and a protective cover of the feed lines; and the feed network frame of a metal cavity structure comprises a first rectangular cavity and a second rectangular cavity, the inner bottom of the first rectangular cavity is provided with feed grooves in which the flexible feed lines are embedded and transitional microstrip grooves with a partition wall, and the inner bottom of the second rectangular cavity is provided with a groove for installing the strip line power divider. The strip line power divider is fixed in the groove in the inner bottom of the second rectangular cavity, and is connected to the transitional microstrips via the flexible feed lines; the strip line power divider realizes input and output of RF signals via the K type connector; and the cover plate of the power divider and the protective cover of the feed lines enclose the feed network frame.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, in particular relates to a multi-layer feeding network, and its main application direction is multi-beam antennas. Background technique [0002] The feed network is used for the transmission and distribution of microwave signals, and has the functions of power distribution, power synthesis, signal coupling and filtering. [0003] In the field of microwave antennas, the typical application of the feed network is to distribute and transmit microwave signals to active phased array antennas and passive antenna arrays. The feed network transmits the microwave signals output by the transceiver to the ports of the transceiver feed components. It is also possible to synthesize the microwave signals received from the transceiver and feed components, and transmit them to the transceiver for processing. [0004] The current feed network products have the following technical features: [0005] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01P5/16
CPCH01P5/16H01Q21/0006H01Q21/0075
Inventor 江涛阎鲁滨段江年斯扬韩运忠周怀安高文军毛永飞侯沁芳张杰
Owner BEIJING INST OF SPACECRAFT SYST ENG
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