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Substrate-insertion type rectangular waveguide band elimination filter

A band-stop filter and rectangular waveguide technology, which is applied to waveguide devices, resonators, electrical components, etc., can solve the problems of difficult processing and assembly, high volume and cost, and high precision requirements, and achieve low processing difficulty and assembly And the effect of simple debugging and simplified structure

Inactive Publication Date: 2012-08-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of waveguide band-stop filter generally has a complex structure, which is difficult to process and assemble, requires high precision, and relatively high volume and cost.

Method used

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  • Substrate-insertion type rectangular waveguide band elimination filter
  • Substrate-insertion type rectangular waveguide band elimination filter
  • Substrate-insertion type rectangular waveguide band elimination filter

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Experimental program
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Embodiment Construction

[0016] The present invention will be further described below.

[0017] Main view structure of the present invention such as figure 1 As shown, it includes a rectangular waveguide transmission line and a dielectric substrate. The dielectric substrate is a PCB board. The rectangular waveguide transmission line is composed of two cavities combined, and a rectangular waveguide cavity is formed in the middle. There is a groove for inserting the dielectric substrate in the middle, and the figure 1 Among them, the groove is set at the joint of the right cavity, and the thickness of the groove is the same as that of the dielectric substrate. The inserted dielectric substrate is pressed and fixed by the two cavities. On any side of the dielectric substrate A resonator circuit is provided, and there is no circuit on the other side, and coupling occurs between the resonator circuit and the rectangular waveguide transmission line, thereby obtaining a band-stop response.

[0018] Such as...

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Abstract

The invention discloses a substrate-insertion type rectangular waveguide band elimination filter, which belongs to the field of microwave band elimination filter. The filter is characterized in that two cavities fold to form a rectangular waveguide transmission line; a slot for inserting a medium substrate is arranged at the folding part of any one cavity; the medium substrate is electrically connected with the corresponding cavity through metal conduction bands arranged at two sides of the medium substrate and is pressed and fixed by folding of the two cavities; a plurality of L-shaped quarter-wave resonators are arranged on any one surface of the medium substrate; and each resonator is coupled with the rectangular waveguide transmission line so as to generate a stop band. According to the invention, the substrate-insertion type rectangular waveguide band elimination filter has a simple structure, does not need to use an external waveguide resonator, has low difficulty in processing and assembly and is small in volume and low in cost.

Description

technical field [0001] The invention relates to a filter, in particular to a rectangular waveguide band-stop filter, which belongs to the field of microwave band-stop filters. Background technique [0002] Microwave band rejection filter is a commonly used microwave frequency device, which is used to suppress signal transmission in a certain frequency band, so as to eliminate the corresponding interference. The filter is widely used in communication systems, radar radio frequency systems, and spurious measurement systems. [0003] Traditional waveguide port bandstop filters often need to set up waveguide transmission lines and multiple external waveguide resonators, and the waveguide resonators and waveguide transmission lines realize bandstop through a certain coupling mechanism. This kind of waveguide band-stop filter generally has a complex structure, great difficulty in processing and assembly, high precision requirements, and relatively high volume and cost. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P7/00
Inventor 刘云
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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