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A Dielectric Loaded Half-mode Substrate Integrated Waveguide Bandpass Filter

A half-mode substrate integration and band-pass filter technology, which is applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problem of large overall size of components, and achieve the effect of high integration, small size and good selectivity

Inactive Publication Date: 2019-02-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this bandpass filter is implemented by loading a dielectric column in the center of the substrate-integrated waveguide square cavity, which leads to a larger overall size of the component

Method used

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  • A Dielectric Loaded Half-mode Substrate Integrated Waveguide Bandpass Filter
  • A Dielectric Loaded Half-mode Substrate Integrated Waveguide Bandpass Filter
  • A Dielectric Loaded Half-mode Substrate Integrated Waveguide Bandpass Filter

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and embodiment, describe technical solution of the present invention in detail:

[0025] Such as figure 1 and figure 2 As shown, a medium-loaded half-mode substrate integrated waveguide bandpass filter includes a rectangular dielectric substrate 2 (the dielectric substrate 2 is a Rogers duroid 5880 substrate with length*width*thickness=32mm*14mm*0.787mm, and its relative dielectric Constant ε r =2.2, loss tangent tanδ=0.0009. ), a metal patch on the front of the substrate, and a ground plate 1 covering the back of the substrate.

[0026] The metal patch includes a rectangular metal patch 3, a 50Ω input and output microstrip feeder 8 at both ends connected to the rectangular metal patch 3 through a trapezoidal impedance gradient microstrip line 4, and the distance between the lower end of the metal patch and the long side of the substrate is 5.6mm .

[0027] The rectangular metal patch 3 is connected to the ground plat...

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Abstract

The invention discloses a medium-loaded half-mode substrate integrated waveguide bandpass filter, which belongs to the field of microwave and millimeter waves. The filter includes a dielectric substrate, a metal patch arranged on the front of the substrate, and a ground plate covering the back of the substrate. Dielectric pillars are loaded on the substrate, and stepped impedance slot lines are etched between the dielectric pillars. The invention adopts the semi-mode substrate integrated waveguide technology to design the filter, and has the advantages of low loss, high quality factor, easy integration and the like compared with the filter of the traditional rectangular waveguide and transmission line structure. Compared with the traditional substrate-integrated waveguide, the half-mode substrate-integrated waveguide maintains the transmission characteristics of the substrate-integrated waveguide, and at the same time, the size is reduced by half, the structure is more compact, and the integration degree is higher.

Description

technical field [0001] The invention belongs to the field of microwave and millimeter waves, in particular to a medium-loaded half-mode substrate integrated waveguide bandpass filter. Background technique [0002] Filters are important components used in modern wireless communication systems to separate and combine signals of various frequencies. With the continuous increase of people's demand for limited spectrum resources, especially the continuous subdivision and increase of future intelligent wireless communication frequency bands, modern communication systems are putting forward higher requirements for the performance and structure of filters. Traditional filter design methods are insufficient to meet the requirements of modern wireless communication systems for filters such as low insertion loss, high selectivity, wide stopband, miniaturization, and easy integration. In order to take into account the needs of high performance and miniaturization of the filter, people ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 张巧利王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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