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Substrate integrated waveguide adjustable filter

A substrate-integrated waveguide and half-mode substrate-integrated technology, applied in the field of radio frequency, can solve the problems of complex installation and large volume, and achieve the effects of low processing cost, small volume, and simple realization.

Active Publication Date: 2019-11-15
HUAQIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a substrate-integrated waveguide tunable filter in order to overcome the defects of complicated structural design and installation and large volume of the electric tunable filter in the prior art

Method used

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  • Substrate integrated waveguide adjustable filter
  • Substrate integrated waveguide adjustable filter
  • Substrate integrated waveguide adjustable filter

Examples

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Embodiment 1

[0041] This embodiment provides a substrate-integrated waveguide tunable filter. It includes: a dielectric substrate; a first metal layer disposed on the dielectric substrate and a second metal layer disposed below the dielectric substrate; distributed on the edge of the first metal layer and penetrating A plurality of first metallized through holes of the first metal layer, the dielectric substrate and the second metal layer; at least one unmetallized trench penetrating through the first metal layer and the dielectric substrate; And, corresponding to at least one tuning device embedded in the unmetallized trench, the position of the tuning device in the trench is adjustable.

[0042] The substrate-integrated waveguide tunable filter of this embodiment utilizes the movement of the tuning device in the unmetallized trench to disturb the electromagnetic field distribution and realize the adjustable resonance frequency. After the tuning device moves to a specific position, a spec...

Embodiment 2

[0044] This embodiment is a further description of Embodiment 1. figure 1 The specific structure of a substrate-integrated waveguide tunable filter of this embodiment is shown. The substrate-integrated waveguide tunable filter is a half-mode substrate-integrated waveguide tunable filter, which includes a dielectric substrate (not shown in the figure), a first metal layer 101, a second metal layer (not shown in the figure) out), several first metallized vias 102, three unmetallized trenches 103 and three tuning devices 104.

[0045] The first metal layer 101 is disposed on the dielectric substrate. The second metal layer is disposed under the dielectric substrate. In this embodiment, the first metal layer 101 is a right-angled triangle (such as an isosceles right-angled triangle with a side length a), and the dielectric substrate and the second metal layer can be The layers 101 are triangles with the same size, squares with side length a or slightly larger than a, or other s...

Embodiment 3

[0056] This embodiment is basically the same as Embodiment 2, the difference is that, as Figure 5 As shown, the substrate integrated waveguide tunable filter of this embodiment may include two unmetallized trenches 103 and two tuning devices 104, the angle between the two unmetallized trenches 103 is 180°, can be seen as omitting figure 1 The unmetallized trench in the middle. The tunable principle of the substrate-integrated waveguide tunable filter is the same as that of Embodiment 2. The size of each part in the filter can be obtained through simulation design according to a specific center frequency.

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Abstract

The invention discloses a substrate integrated waveguide adjustable filter, which includes a dielectric substrate, a first metal layer arranged on the dielectric substrate, a second metal layer arranged under the dielectric substrate, a plurality of first metalized through holes distributed at the edge of the first metal layer and penetrating the first metal layer, the dielectric substrate and thesecond metal layer, at least one unmetalized groove penetrating the first metal layer and the dielectric substrate, and at least one tuning device correspondingly embedded into the unmetalized grooves, wherein the positions of the tuning devices in the unmetalized grooves are adjustable. The movement of the tuning devices in the unmetalized grooves is utilized to disturb the distribution of the electromagnetic field so as to realize an adjustable resonance frequency. Because the movement of the tuning devices in the grooves is continuous, continuous adjustment of the resonance frequency is realized. Compared with an electrically tunable filter, the substrate integrated waveguide adjustable filter has the advantages of simple realization, small volume and low processing cost.

Description

technical field [0001] The invention belongs to the radio frequency field, in particular to a substrate integrated waveguide tunable filter. Background technique [0002] The substrate integrated waveguide tunable filter is one of the important components of the wireless communication system. The substrate-integrated waveguide is a new form of microwave transmission line, which uses metal vias to realize the field propagation mode of the waveguide on the dielectric substrate. At present, the substrate-integrated waveguide tunable filter is mainly an electrically tunable filter, such as using semiconductor varactor diodes, MEMS (micro-electro-mechanical systems) and other tuning methods to realize the frequency band tunable characteristics of the filter. This electrically tunable base The design and installation of chip-integrated waveguide tunable filters are complex and bulky. Contents of the invention [0003] The technical problem to be solved by the present invention...

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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