Band-pass filter based on gap waveguide technology

A band-pass filter and gap waveguide technology, applied in the electronic field, can solve the problems of unfavorable batch production, long processing cycle, high product cost, etc., and achieve the effects of easy batch production, reduced transmission loss, and easy processing

Inactive Publication Date: 2015-06-24
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the realization of these conditions will lead to high product cost and long processing cycle, which is not conducive to mass production

Method used

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  • Band-pass filter based on gap waveguide technology
  • Band-pass filter based on gap waveguide technology
  • Band-pass filter based on gap waveguide technology

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] see figure 1 , 2, 3, 4, the bandpass filter based on microstrip slot-gap waveguide technology of the present invention mainly includes the following four parts: dielectric substrate 1, metal cover plate 5, metal floor 6 and feeding probe 7. A part of the dielectric substrate 1 is milled off, and the unmilled part is distributed with periodically arranged metallized via holes 2, and the lower surface of the unmilled part of the dielectric substrate 1 is covered with metal; the metal cover plate 5 is placed on the dielectric substrate 1 Above the surface, there is a gap between the metal cover plate 5 and the metallized via hole 2 on the dielectric substrate 1; the metal floor 6 is placed under the lower surface of the dielectric substrate 1, and the metal floor 6 is electrically connected to the metal part of the lower surface of the dielectric substrat...

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Abstract

The invention discloses a band-pass filter based on the gap waveguide technology. The band-pass filter comprises a metal bottom plate with a groove in the surface and a metal cover plate matched with the metal bottom plate to form a closed cavity. A dielectric substrate is arranged in the closed cavity. Periodically-and-alternately-distributed coupling structures and groove bodies partitioned by the coupling structures and used for being combined with the metal cover plate and the metal bottom plate to form resonant cavities are arranged on the dielectric substrate. Through holes where feed probes are installed are formed in the metal cover plate, gaps are reserved between the dielectric substrate and the metal cover plate and between the dielectric substrate and the feed probes, the dielectric substrate is electrically connected with the metal bottom plate, and the metal bottom plate is electrically connected with the metal cover plate. Periodically-arranged metallization via holes are formed in the surface of the dielectric substrate, a periodic electromagnetic bang gap structure of the band-pass filter is formed by the metallization via holes, the metal cover plate and the metal bottom plate, and electromagnetic waves are only transmitted on gaps of the groove bodies of the dielectric substrate. The band-pass filter is high in out-of-band rejection performance, obvious in filtering effect, easy to manufacture and suitable for volume production.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a band-pass filter based on gap waveguide technology. Background technique [0002] Gap waveguides are classified into ridge-gap waveguides and groove-gap waveguides. As a new type of transmission structure, the ridge-gap waveguide was first proposed in 2009. Its structure is formed by arranging electromagnetic bandgap around the metal ridge on the surface of a flat plate of the parallel plate waveguide. When the distance between the upper metal plate and the electromagnetic bandgap surface is less than At a quarter wavelength, due to the bandgap characteristics of the electromagnetic bandgap structure, the electromagnetic wave cannot propagate in it, but only propagates in the quasi-TEM mode in the direction of the metal ridge, and cuts off other modes in a wide frequency band, thus Hence the name ridge-gap waveguide. Later, the slot-gap waveguide was developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208
Inventor 樊芳芳吕苗王金辉鄢泽洪张天龄
Owner XIDIAN UNIV
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