Hybrid Resonators Based Balanced Diplexer with Wide Stopband and High/Wideband Common-Mode Suppression

被引：0
|
作者：
Chi, Pei-Ling [1 ]
Hung, Ping-Hao [1 ]
Yang, Tao [2 ]
机构：
[1] Natl Yang Ming Chiao Tung Univ, Dept Elect & Comp Engn, Hsinchu, Taiwan
[2] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu, Peoples R China
来源：
2023 ASIA-PACIFIC MICROWAVE CONFERENCE, APMC | 2023年
关键词：
Balanced; common-mode suppression; diplexer; dual-mode; slotline resonator; transmission zero;
D O I：
10.1109/APMC57107.2023.10439678
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-to-balanced diplexer with wide stopband and high/wideband common-mode suppression is proposed. To increase filter order while achieving a high degree of common-mode suppression, the microstrip feedlines were appropriately designed to feed each I/O slotline resonator of each channel. To extend the spurious-free bandwidth for enabling two flexible operating frequencies, an intrinsic transmission zero from the dual-mode slotline resonator was utilized for stopband suppression. A fourth-order diplexer was prototyped with center frequencies at 2.31/4.85 GHz and 3-dB bandwidths of 8.7/9.9%. Measured in-band insertion loss, common-mode suppression, and isolation are 3.4/2.5 dB, greater than 52.5/46.4 dB, and greater than 44.3/43.5 dB, respectively. Common-mode rejection is greater than 31.5 dB over 1-10 GHz and for greater than 18-dB suppression, the differential-mode stopband extension is larger than 4.33fL.
引用
收藏
页码：438 / 440
页数：3
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