A Compact Bandpass Filter with Wide Stopband and Two Finite Transmission Zeros

被引：5
|
作者：
Yu, Tingting [1 ]
Xu, Feng [1 ]
Chen, Yang [1 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Sch Elect & Opt Engn, Nanjing 210023, Peoples R China
来源：
2019 IEEE INTERNATIONAL SYMPOSIUM ON RADIO-FREQUENCY INTEGRATION TECHNOLOGY (RFIT2019) | 2019年
基金：
加拿大自然科学与工程研究理事会;
关键词：
Bandpass filter (BPF); two finite transmission zeros; wide stopband; microstrip filter; RESONATOR; COMBLINE;
D O I：
10.1109/rfit.2019.8929150
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 compact bandpass filter with wide stopband and two finite transmission zeros is proposed in this paper. By means of the coupling control, two finite transmission zeros can be introduced in the combline filter response. Four transmission zeros on the upper stopband can be created by the source/load coupling and spurlines etched on the transmission lines, which can achieve wide stopband of the filter. The working center frequency and relative bandwidth of the designed filter are respectively 3.47 GHz and 4.3%. The measured return loss and insertion loss of this filter are better than 16.7 dB and less than 0.9 dB in the range of 3.39 GHz to 3.54 GHz, respectively. The upper stopband is extended up to 3.77f0 with an insertion loss larger than 19 dB.
引用
收藏
页数：3
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