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Phase shifter

A phase shifter and dielectric plate technology, which is applied to waveguide-type devices, electrical components, circuits, etc., can solve the problem that the performance index of the microwave adjustable phase shifter cannot meet the technical development requirements, etc., and achieves a convenient manufacturing method and high practicability. , the effect of low cost

Inactive Publication Date: 2015-03-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the technical problem that the performance index of the microwave adjustable phase shifter based on the traditional structure cannot meet the technical development requirements

Method used

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Embodiment Construction

[0024] Such as figure 1 Made to Figure 7 As shown, the phase shifter 100 provided by the present invention includes a first layer dielectric plate 130, a second layer dielectric plate 120, an inverted microstrip structure 135 and a third layer metal plate 110, the first layer dielectric plate 130, the second layer The dielectric plate 120 and the third layer of metal plate 110 are arranged sequentially from top to bottom, and the adjacent layers are bonded by conductive glue. The inverted microstrip structure 135 is arranged on the lower surface of the first layer of dielectric plate 130, and the second layer of dielectric The middle part of the plate 120 is provided with a rectangular groove 125, and the first layer of dielectric plate 130 is provided with two through holes 136 for injecting nematic liquid crystal, and the nematic liquid crystal 126 passes through the through holes 136 on the first layer of dielectric plate 130 Inject into the cavity surrounded by the recta...

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Abstract

The invention discloses a phase shifter which comprises a first layer medium plate, a second layer medium plate, an inverted micro-strip structure and a third layer metal plate. The first layer medium plate, the second layer medium plate and the third layer metal plate are sequentially arranged from top to bottom. The inverted micro-strip structure is arranged on the lower surface of the first layer medium plate. A rectangular groove is formed in the middle of the second layer medium plate. When the first layer medium plate is placed on the second layer medium plate, the inverted micro-strip structure on the first layer medium plate is placed in the rectangular groove, nematic liquid crystal is arranged in a cavity which is formed by making the rectangular groove in the second layer medium plate matched with the first layer medium plate and the third layer metal plate, and a connector is installed in installation notches in corresponding positions of the second layer medium plate and the third layer metal plate. According to the phase shifter, the performance of the nematic liquid crystal is utilized, and therefore the phase shifter can work under microwave frequency bands, has the advantages of being miniaturized, low in manufacturing cost, high in phase shifting degree, low in working voltage and the like, and has quite high practicability.

Description

technical field [0001] The invention relates to the field of microwave and photoelectric components, 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, there are many kinds of phase shifters in use, such as: 1. PIN diode phase shifter, which realizes different switching characteristics and impedance characteristics through the forward-biased and reverse-biased states of the diode; 2. Ferrite (YIG) phase shifter , is to apply a magnetic field through the waveguide, so that the magnetic permeability of the ferrite changes, and then the phase velocity of the electromagnetic wave changes, so as to obtain different phase shifts; 3. BST ferroelectric phase shifter, by adjusting the external electric field, The relative permittivity of the BST film also changes accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/18H01P1/19
Inventor 蒋迪
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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