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A r-s phase shifter with stable phase shift

A technology of R-S and phase shifter, which is applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problems of large driving power consumption, difficult temperature compensation, unstable phase shift, etc., and achieve reduction of driving power consumption and phase shift temperature Improved coefficient and good drive current consistency

Active Publication Date: 2019-03-29
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the shortcomings of the existing R-S phase shifter, such as unstable phase shift, excessive driving power consumption, and difficulty in realizing phase shift temperature compensation, and provide a stable phase shifter, low driving power consumption, and easy R-S Phase Shifter Realizing Phase Shift Temperature Compensation

Method used

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  • A r-s phase shifter with stable phase shift
  • A r-s phase shifter with stable phase shift
  • A r-s phase shifter with stable phase shift

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Embodiment

[0035] Embodiment: implementation method of the present invention is as follows:

[0036] 1. in figure 1 The described metal waveguide cavity 1 or the metal cover plate 2, or a thin layer of insulating layer is formed on the surface of the two at the same time. In this embodiment, a dense insulating layer is formed on the metal waveguide cavity 1 by anodic oxidation;

[0037] 2. The thickness of the insulating layer must be strictly controlled so that it has the least influence on the microwave transmission of the phase shifter under the condition of satisfying the insulation. The thickness of the insulating layer in this embodiment is less than 30um;

[0038] 3. Assemble the other parts of the phase shifter and the metal cover plate 2 on the metal waveguide cavity 1 that has completed the surface insulation treatment. Be very careful during the assembly process to avoid scratching the insulating layer and causing the metal waveguide cavity 1 and the metal cover plate 2 to con...

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Abstract

The invention belongs to the field of microwave devices, and relates to a solution to the problem of inherent phase shift instability for a lock-type Reggia-Spencer phase shifter. The R-S phase shifter with stable phase shift is characterized in that the direct-current resistance between a metal waveguide cavity of the R-S phase shifter and a metal cover plate is greater than 0.5 ohm. Furthermore, an insulating layer is arranged on the surface of the metal waveguide cavity or the surface of the metal cover plate, or insulating layers are arranged on the surface of the metal waveguide cavity and the surface of the metal cover plate at the same time. The R-S phase shifter solves the problem that the phase shift of the R-S phase shifter is unstable. The phase shift of the phase shifter manufactured without using the scheme of the invention after high and low temperature, vibration and ageing is changed irregularly, hundreds of degrees can be reached to the maximum extent, and the phase shift curve of the phase shifter manufactured by using the scheme of the invention after high and low temperature, vibration and ageing is not changed.

Description

1. Technical field [0001] The invention belongs to the field of microwave devices, and relates to a solution to the inherent phase shift instability problem of a lock-type Reggia-Spencer phase shifter (hereinafter referred to as an R-S phase shifter). 2. Background technology [0002] Microwave ferrite phase shifters are widely used in phased array radar antenna systems. Microwave ferrite phase shifters include dual-mode linear polarization phase shifters, dual-mode circular polarization phase shifters, and non-reciprocal rectangular ring phase shifters. Among them, R-S is especially suitable for airborne or missile-borne phased array radar due to its small size, light weight, phase shift reciprocity, and online polarization mode. [0003] Due to the inherent structural characteristics of the existing R-S phase shifter, the metal waveguide cavity and the metal cover plate on the side are bonded by conductive adhesive to form a closed waveguide, forming a short circuit to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/18
Inventor 龙佩敏刘华夏苏萍
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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