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Microwave phase shifter

A microwave phase shifter and waveguide technology, which is used in waveguide-type devices, coupling of optical waveguides, semiconductor/solid-state device components, etc., to achieve the effects of low operating voltage, low insertion loss, and high operating frequency

Inactive Publication Date: 2015-11-04
CHENGDU ZHONGWEI ELECTRONICS MICROWAVE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waveguide ferrite device can control the amplitude or phase of the passing microwave signal in the antenna feeder, but a certain dielectric matcher must be used to match the ferrite waveguide and the empty waveguide

Method used

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  • Microwave phase shifter
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Embodiment Construction

[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0011] see also figure 1 and figure 2 , the microwave phase shifter in this embodiment includes a first dielectric sheet 1 , a second dielectric sheet 2 , a metal sheet 3 , a ferrite 4 and a waveguide 5 .

[0012] Among them, the first dielectric sheet 1, the second dielectric sheet 2 and the metal sheet 3 are stacked sequentially and fixed by conductive glue, the second dielectric sheet 2 is dug with a groove 21 adjacent to the surface of the first dielectr...

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Abstract

The invention provides a microwave phase shifter. The microwave phase shifter comprises a first medium sheet, a second medium sheet, a metal sheet, ferrites and a waveguide. The first medium sheet, the second medium sheet and the metal sheet are successively limited and are bonded and fixed through a conductive adhesive. A groove is formed in the surface of the second medium sheet in a dug manner. A microstrip line is pasted to the surface of the first medium sheet. Nematic liquid crystals are injected into a cavity formed by the groove and the first medium sheet. The outer surface of the first medium sheet and the outer surface of the second medium sheet are respectively provided with at least two layers of ferrites, and the ferrites are internally provided with excitation leads. The first medium sheet, the second medium sheet, the metal sheet and the ferrites are respectively arranged in an inner cavity of the waveguide. Two ends of the waveguide are respectively provided with first matching mediums and second matching mediums. Two ends of each of the first medium sheet and the second medium sheet are in contact with the first matching mediums, and two ends of each ferrite are in contact with the second matching medium, wherein the dielectric constant of the first matching medium is larger than that of the second matching medium. The microwave phase shifter is capable of realizing phase shifting in an ultra-wideband microwave frequency range.

Description

technical field [0001] The invention relates to the technical field of microwave devices, in particular to a microwave phase shifter. Background technique [0002] A phase shifter is a device that adjusts the phase of a wave, and is widely used in the fields of radar, missile attitude control, accelerator, communication, and instrumentation. At present, ferrite devices are widely used in various radar systems, among which waveguide microwave ferrite devices occupy half of the country. Both passive phased array radar and sub-array active phased array radar system need to use a large number of these devices. The waveguide ferrite device can control the amplitude or phase of the passing microwave signal in the antenna feeder, but a certain dielectric matcher must be used to match the ferrite waveguide and the empty waveguide. With the development of radar technology, broadband work has become a development trend, and the conventional matching method used in waveguide microwav...

Claims

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Application Information

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IPC IPC(8): H01P1/18B81B7/02
Inventor 蒋孝林李翔
Owner CHENGDU ZHONGWEI ELECTRONICS MICROWAVE TECH
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