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Filter having tunable frequency band

A filter and frequency band technology, applied in the field of frequency band adjustable filters, can solve the problems of difficult operation of filter frequency tuning and complicated design, and achieve the effects of strong practicability, simple design structure and simple operation.

Active Publication Date: 2019-10-15
HUAQIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the inventors have found that at least the following problems exist in the prior art: the existing substrate integrated waveguide tunable filter is realized by tunable capacitor or switch method, but these methods are complex in design, and it is not easy to tune the frequency of the actual filter. operate

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.

[0027] The first embodiment of the present invention relates to a frequency band tunable filter. The core of this embodiment is to include: a dielectric substrate; an upper surface metal patch and a lower surface metal patch respectively arranged on the front and back surfaces of the dielectric substrate; Th...

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Abstract

The embodiment of the present invention relates to the technical field of filters and discloses a filter having a tunable frequency band. The filter comprises a dielectric substrate; an upper surfacemetal patch and a lower surface metal patch disposed on the front surface and the reverse surface of the dielectric substrate respectively; a peripheral metalized via hole disposed on the edge position of the dielectric substrate and extending through the upper surface metal patch and the lower surface metal patch; a plurality of unmetalized through holes disposed on the central position of the dielectric substrate, extending through the upper surface metal patch and the lower surface metal patch, and configured to accommodate copper posts to adjust the resonant frequency of the filter. The filter having a tunable frequency band is simple in design and is easy to operate and practical in the process of tuning the actual filter frequency.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of filters, in particular to a frequency band tunable filter. Background technique [0002] The design of tunable filters has been mainly focused on microstrip and cavity structures, and there are few designs of tunable filters with substrate-integrated waveguide structures. The substrate-integrated waveguide is a waveguide structure realized by introducing a periodic metallized through-hole array between the upper and lower metal surfaces of a double-sided copper-clad dielectric substrate. The propagation characteristics of the substrate-integrated waveguides are similar to those of the corresponding dielectric-filled metal waveguides. Substrate-integrated waveguides have the advantages of high quality factor, planarization, easy integration, and large power capacity similar to metal waveguides. Light weight, low cost, easy processing, easy to realize planar integration and other adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 王旭
Owner HUAQIN TECH CO LTD
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