High common-mode suppression balanced bandpass filter using isosceles right-angled triangular resonator

被引：4

作者：

Zhang, Qiao ^{[1
]}

Chen, Chang ^{[1
]}

Chen, Weidong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230026, Anhui, Peoples R China

来源：

ELECTRONICS LETTERS | 2019年 / 55卷 / 18期

关键词：

band-pass filters; resonator filters; microwave filters; high common-mode suppression balanced bandpass filter; high order orthogonal modes; overlapped isosceles RAT resonators; CM suppression; isosceles right-angled triangular resonator; balanced bandpass filter; frequency; 6; 12; GHz;

D O I：

10.1049/el.2019.1945

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A balanced bandpass filter with high common-mode (CM) suppression using isosceles right-angled triangular (RAT) resonator is proposed in this Letter. The two high order orthogonal modes (TM210Z and TM200Z) are generated in the two overlapped isosceles RAT resonators under differential-mode (DM) and CM excitation, respectively. In this structure, TM210Z mode will be transmitted and TM200Z mode will be blocked. Furthermore, four via-holes are introduced to disturb TM210Z mode while TM200Z mode is unaffected, in order to shift the DM passband to the position of CM suppression. The designed balanced bandpass filter operating at 6.12 GHz with 3 dB fractional bandwidth of 5% is fabricated and measured. The measured and simulated results match very well with each other validating the feasibility of the proposed design concept.

引用

页码：1001 / +

页数：2

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