Miniature multilayer ceramic millimeter wave band-pass filter

A technology of band-pass filter and multilayer ceramics, which is applied in the direction of waveguide devices, electrical components, circuits, etc., to achieve the effect of reducing size, improving Q value, and improving manufacturing yield

Active Publication Date: 2018-08-21
NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, optimization for size reduction of circuits containing resonators leaves many open issues

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  • Miniature multilayer ceramic millimeter wave band-pass filter
  • Miniature multilayer ceramic millimeter wave band-pass filter
  • Miniature multilayer ceramic millimeter wave band-pass filter

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] See Figure 1-Figure 3 , a miniature multilayer ceramic millimeter-wave bandpass filter, including an input port 1 and an output port 2, an upper metal layer 3, a middle metal layer 4 and a lower metal layer 5 arranged in parallel, the upper metal layer 3, the middle metal layer 4 are connected with a plurality of cavity separation through holes to separate the upper metal layer 3 and the middle metal layer 4 into the first resonant cavity 6 and the fou...

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Abstract

The invention discloses a miniature multilayer ceramic millimeter wave band-pass filter. The miniature multilayer ceramic millimeter wave band-pass filter comprises an input port and an output port, and an upper metal layer, a middle metal layer and a lower metal layer which are arranged in parallel, wherein a plurality of cavity dividing through holes are connected with a part between the upper metal layer and the middle metal layer, so as to divide the part between the upper metal layer and the middle metal layer into a first resonant cavity and a fourth resonant cavity; a plurality of cavity dividing through holes are connected with a part between the middle metal layer and the lower metal layer, so as to divide the part between the middle metal layer and the lower metal layer into a second resonant cavity and a third resonant cavity; loading resonators are arranged inside the four resonant cavities. The miniature multilayer ceramic millimeter wave band-pass filter comprises four SIW resonant cavities, and the loading resonators are arranged inside the four resonant cavities, so that resonant frequency of the siw resonant cavities is reduced, and the purpose of reducing the sizein the condition that the working frequency remains unchanged is achieved.

Description

technical field [0001] The invention relates to the technical field of microwave functional devices, in particular to a miniature multilayer ceramic millimeter wave bandpass filter. Background technique [0002] Millimeter waves refer to electromagnetic waves with a wavelength of 1-10mm. It is located in the wavelength range where microwaves and far-infrared waves overlap, so it has the characteristics of both spectrums. Compared with light waves, millimeter waves have a small attenuation when propagating through the atmospheric window (when millimeter waves and submillimeter waves propagate in the atmosphere, some attenuation caused by resonance absorption of gas molecules 24GHZ microwave radar sensor is a minimum value) , less affected by natural light and thermal radiation sources. [0003] In order to optimize the performance of the filter and reduce the volume, the multilayer filter design technology based on the low temperature co-fired ceramic (Low Temperature Co-fir...

Claims

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Application Information

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IPC IPC(8): H01P1/208
CPCH01P1/208
Inventor 刘俊清于沛洋项玮马涛
Owner NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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