Balanced bandpass microstrip filter with high common-mode rejection and extended stopband

被引：2
|
作者：
Romero-Ramirez, Miguel-Antonio [1 ]
Olvera-Cervantes, Jose-Luis [1 ]
Kataria, Tejinder K. [2 ]
Corona-Chavez, Alonso [1 ,3 ]
机构：
[1] Natl Inst Astrophys Opt & Elect, Dept Elect, Puebla, Mexico
[2] Univ Autonoma Ciudad Mexico, Plantel Casa Libertad, Mexico City, Mexico
[3] Natl Inst Astrophys Opt & Elect, Dept Elect, Puebla 72000, Mexico
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2023年 / 65卷 / 06期
关键词：
balanced bandpass filter; differential-mode stopband; high common-mode rejection; HIGH SELECTIVITY; SUPPRESSION; RESONATOR;
D O I：
10.1002/mop.33606
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 (BBPF) with high common-mode rejection (CMR) and extended differential-mode (DM) stopband is presented. It is based on miniaturized Pi-network ring resonators with loaded inductors. This structure permits the design of the common-mode (CM) and DM resonances independently, which gives plenty of flexibility when designing the filter. Stubs are added along the symmetry plane to improve the CMR. A microstrip BBPF is designed at 921.7 MHz with a fractional bandwidth of 8.4% and a DM stopband of 10.13 f0 ${{\boldsymbol{f}}}_{{\bf{0}}}$ for S-21 < -30 dB. The CMR is better than -20 dB up to 10 f0 ${{\boldsymbol{f}}}_{{\bf{0}}}$.
引用
收藏
页码：1595 / 1601
页数：7
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