Circularly polarized phased-array antenna unit

A phased array antenna and circular polarization technology, which is applied in the direction of antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of penetration accuracy affecting antenna performance, etc., achieve good wide-angle scanning performance, reduce aperture, wide The effect of good corner matching performance

Inactive Publication Date: 2019-04-05
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the penetrating precision of the feeder line of the existing waveguide antenna affects the performance of the antenna, the pr

Method used

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  • Circularly polarized phased-array antenna unit
  • Circularly polarized phased-array antenna unit
  • Circularly polarized phased-array antenna unit

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the drawings. Not as a restriction.

[0026] The present invention is mainly composed of a metal waveguide 3, a polyimide dielectric material 2, a matching structure 4, a connector 1, a circular polarizer 5. Reference figure 1 .

[0027] The metal waveguide 3 is made of metal materials, such as light metals such as copper and aluminum. Its shape is an inverted L shape, the top 31 of the L shape is a square shape, which is a radiating part; the side 32 is a rectangle, which is a feeding part.

[0028] The polyimide dielectric material 2 is filled with the metal waveguide 3, and the polyimide dielectric block 2 protrudes from the metal waveguide 3. The polyimide dielectric material 2 is used to reduce the antenna aperture, and its protruding part improves the antenna axial ratio. Such as Figure 5 Shown.

[0029] The connector 1 is a waveguide feed structure, which feeds the antenna. It is a rectangula...

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Abstract

The invention discloses a circularly polarized phased-array antenna unit composed of a metal waveguide, a polyimide dielectric material, a matching structure, a connector, and a circular polarizer. The metal waveguide is made of a metal material and has an inverted-L shape. The L-shape has a square top and a rectangular side. The polyimide dielectric material fully fills the metal waveguide, and apolyimide dielectric block protrudes from the metal waveguide. The connector is a waveguide feed structure and is fixedly connected in a space under the metal waveguide. The connector has two probes,one of which is a signal input end connected to a signal source, and the other one of which is an output end connected to the side of the metal waveguide. The side of the metal waveguide is a feed waveguide cavity having the matching structure therein. The matching structure is a stepped pyramid structure connected to the probe at the output end of the connector. The circular polarizer is a stepped diaphragm structure and is located at the intermediate position of the top of the metal waveguide. The circularly polarized phased-array antenna unit is easy to process and ensures the qualified rate and precision of a product.

Description

Technical field [0001] The invention relates to a phased array antenna, in particular to a circularly polarized phased array antenna unit adopting a metal waveguide. Background technique [0002] The phased array antenna realizes the scanning or rotation of the antenna beam pointing in space by controlling the phase of each element in the array. It is an important component of modern phased array radar systems. The communication system on the aircraft requires the antenna unit to have a low profile to meet the equipment installation requirements; the distance between the array elements is small to achieve beam wide-angle scanning; the power capacity is large, and it can withstand greater transmission power. [0003] A circularly polarized antenna can receive electromagnetic waves of any polarization, and its radiation can also be received by an antenna of any polarization. The circularly polarized phased array antenna is used in the communication system of the aircraft, and its be...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50
Inventor 祖亚运龚树军
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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