A high-selectivity ceramic bandpass filter with controllable transmission zeros

被引：0
|
作者：
Fang, Yingxuan [1 ]
Yu, Mengxia [1 ]
Zhang, Xiaochuan [1 ]
Zhang, Rou [1 ]
Ma, Jing [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys, Chengdu, Peoples R China
来源：
FREQUENZ | 2024年 / 78卷 / 5-6期
关键词：
controllable transmission zeros; bandpass filter; electric-magnetic coupling; ceramic substrate; high selectivity; compact size; WAVE-GUIDE FILTER; COMPACT;
D O I：
10.1515/freq-2023-0198
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：
This paper proposes a microstrip filter with controllable transmission zeros based on the lambda/4 stepped impedance resonator. This filter utilizes hybrid electric-magnetic coupling to generate transmission zeros, which can improve selectivity and stop-band performance. A fifth-order filter is designed and manufactured on a ceramic substrate with a center frequency of 26 GHz, bandwidth of 2 GHz and the signal suppression level is better than 42.51 dB from 10 to 22.8 GHz and 48.23 dB from 29.1 to 40 GHz. Furthermore, the proposed filter has a compact size of 2.074 x 1.071 mm (0.566 lambda(g) x 0.292 lambda(g) ).
引用
收藏
页码：213 / 217
页数：5
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