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Symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and method

A microwave filter, parallel coupling technology, applied in waveguide-type devices, circuits, electrical components, etc., to achieve the effect of long response time, high dielectric constant, and miniaturization

Inactive Publication Date: 2014-04-09
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the filtering performance of existing filters is generally single, that is, when the device is formed, its filtering performance is fixed, and there is no way to apply it more flexibly in practice

Method used

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  • Symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and method
  • Symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and method
  • Symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and method

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Embodiment

[0028] Symmetrical function selectable space parallel coupling magnetoelectric tunable microwave filter such as figure 1 , 2 As shown, the size of the GGG substrate used is 3mm×6mm×0.4mm, and the size of the YIG layer grown on its surface is 2.5mm×6mm×0.1mm. PZT and YIG are respectively selected for the piezoelectric phase and the ferromagnetic phase film. The size of PZT is 0.5275mm×3mm×0.1mm, and the two layers are bonded by epoxy resin. At the same time, a silver thin film is plated on the upper and lower surfaces of the PZT layer respectively, and the size of the silver thin film is: 0.5275mm×3mm×0.05mm. In the middle of the upper surface of the YIG film on the GGG, a metal microstrip line is used as a signal transmission line by using coating technology.

[0029] Symmetrical function optional space parallel coupling magnetoelectric tunable microwave filter works, such as figure 1 In the example shown, the microwave signal is input from port 1. When port 2 on the...

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Abstract

The invention discloses a symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and a method. The two ends of a GGG substrate are connected with the two ends of another GGG substrate through piezoelectric phases, ferromagnetic phase films grow on the GGG substrates, metal microstrip lines are made on the upper surfaces of the ferromagnetic phase films by adopting the film coating technology, and the two GGG substrates are oppositely arranged in parallel. Metal films are plated on the upper surfaces of the piezoelectric phases and the lower surfaces of the piezoelectric phases. The two metal microstrip lines are provided with four ports, the port in one side of the corresponding metal microstrip line serves as an input port, and the two ports in the other sides of the metal microstrip line serve as output ports. The symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and the method overcome the defects that a traditional filter is not adjustable in working frequency band and a traditional magnetism-adjustable microwave device is large in loss, long in response time and the like, on the basis, the selectivity of functions of band pass and band stop is added by using the ports, the defect that the band pass and the band stop are single in performance when the device is used is overcome, and the symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and the method can be widely and flexibly applied into wireless communication.

Description

technical field [0001] The invention relates to a miniaturized magnetoelectric tunable microwave filter with two independent performances, in particular to a symmetrical function optional space parallel coupling magnetoelectric tunable microwave filter and method. Background technique [0002] With the rapid development and progress of the wireless communication industry, the industry has higher requirements for the miniaturization and multi-function of microwave filters. [0003] In recent years, the introduction of piezoelectric materials and the design of filters combined with ferrite materials can not only realize the miniaturization of the device, but also realize the multi-function of the device by adjusting the external magnetic field and electric field to change the operating frequency band of the device, thus becoming a new type of filter. hot spots in device design. The size of the microwave filter can be effectively reduced by using the relatively high dielectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/218H01P1/215
Inventor 周浩淼廉靖
Owner CHINA JILIANG UNIV
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