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1. CN111600100 - Capacitive and inductive cross coupling structure and dielectric waveguide filter

Office
China
Application Number 202010612955.8
Application Date 30.06.2020
Publication Number 111600100
Publication Date 28.08.2020
Publication Kind A
IPC
H01P 1/20
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
PWAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE
1Auxiliary devices
20Frequency-selective devices, e.g. filters
CPC
H01P 1/2002
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
1Auxiliary devices
20Frequency-selective devices, e.g. filters
2002Dielectric waveguide filters
Applicants AAC PRECISION MANUFACTURE TECHNOLOGY (CHANGZHOU) CO., LTD.
瑞声精密制造科技(常州)有限公司
Inventors LI LULONG
李陆龙
HAN LI
韩莉
JIANG HUA
姜华
YUE YUEHUA
岳月华
Agents 深圳市恒申知识产权事务所(普通合伙) 44312
Title
(EN) Capacitive and inductive cross coupling structure and dielectric waveguide filter
(ZH) 容性、感性交叉耦合结构及介质波导滤波器
Abstract
(EN) The invention provides a capacitive and inductive cross coupling structure and a dielectric waveguide filter. The capacitive cross coupling structure comprises a medium body, the medium body is provided with four resonance parts which are distributed in a matrix and are provided with resonance blind holes, wherein the adjusting structures are located between the adjacent resonance parts on the edges of the matrix, the coupling blind groove is located in the middle of the matrix, the length direction of the coupling blind groove is consistent with the connecting line direction of the two non-adjacent resonance parts, and the depth of the coupling blind groove is larger than one half of the thickness of the medium body. The resonant blind hole and the adjusting structure are arranged on themedium body to adjust the resonant frequency of the resonant part. And the depth of the coupling blind groove is greater than 1/2 of the thickness of the medium body, so that the structure is a capacitive cross-coupling structure. The resonance blind holes are placed in a matrix mode, it is guaranteed that the connecting line directions of the coupling blind grooves and the non-adjacent resonanceparts are consistent, a pair of zero points can be generated, and therefore the good frequency selection characteristic and out-of-band rejection performance are provided, and the production quality of products is guaranteed.
(ZH) 本发明提供了一种容性、感性交叉耦合结构及介质波导滤波器,其中的容性交叉耦合结构包括介质本体,介质本体设有四个呈矩阵分布且设有谐振盲孔的谐振部,还包括四个位于矩阵的边上的相邻谐振部之间的调节结构,一位于矩阵中间且长度方向与两个非相邻谐振部连线方向一致的耦合盲槽,耦合盲槽的深度大于介质本体厚度的二分之一。通过在介质本体设置谐振盲孔及调节结构,调节谐振部的谐振频率。耦合盲槽的深度大于介质本体厚度的二分之一,使该结构为容性交叉耦合结构。而应用矩阵的方式来放置谐振盲孔,并保证耦合盲槽与非相邻的谐振部连线方向一致,可以产生一对零点,以此提供良好的选频特性和带外抑制性能,保证产品的生产质量。
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