Medium loaded half-mode substrate integrated waveguide band-pass filter

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

Inactive Publication Date: 2016-06-08
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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  • Medium loaded half-mode substrate integrated waveguide band-pass filter
  • Medium loaded half-mode substrate integrated waveguide band-pass filter
  • Medium loaded half-mode substrate integrated waveguide band-pass 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] like 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 Rogersduroid5880 substrate with a length*width*thickness=32mm*14mm*0.787mm, and its relative permittivity 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 plate 1 through...

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Abstract

The invention discloses a medium loaded half-mode substrate integrated waveguide band-pass filter and belongs to the field of microwave and millimeter waves. The medium loaded half-mode substrate integrated waveguide band-pass filter comprises a medium substrate, a metal patch arranged on the front side of the substrate and a grounding plate covering the back side of the substrate, wherein medium columns are loaded on the substrate, and stepped impedance slot lines are etched among the medium columns. The medium loaded half-mode substrate integrated waveguide band-pass filter is designed by adopting a half-mode substrate integrated waveguide technology and has the advantages of being low in loss, high in quality factor, easy to integrate and the like compared with a traditional filter with a rectangular waveguide and transmission line structure. Compared with traditional substrate integrated waveguides, the sizes of a half-mode substrate integrated waveguide is decreased by half while the transmission characteristics of the substrate integrated waveguide are kept, and the substrate integrated waveguide is more compact in structure and higher in integration level.

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 Applications(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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