Synthesis of Dual-Band Bandpass Filters with Asymmetric Stepped-Impedance CBACPW Resonators  

作　　者：WANG Zhongbao FANG Shaojun 

机构地区：[1]School of Information Science and Technology, Dalian Maritime University, Dalian 116026, China

出　　处：《Chinese Journal of Electronics》2013年第4期861-864,共4页电子学报（英文版）

基　　金：This work is supported by National Natural Science Foundation of China （No.61071044）, Traffic Applied Basic Research Project of the Ministry of Transport of China （No.2010-329-225-030）, Fundamental Re- search Funds for the Central Universities （No.3132013053 and No.2012TD007） and National Key Technologies RgcD Program of China （No.2012BAH36B01）.

摘　　要：A novel Dual-band bandpass filter （DBBPF） with an asymmetric topology and stepped- impedance Conductor-backed asymmetric coplanar waveg- uide （CBACPW） resonators is proposed in this paper. Compared with the existing DBBPFs with a same low-pass prototype, two additional transmission zeros are emerged by using the asymmetric topology. To facilitate the filter synthesis, design formulas of the filter are derived, and an ANN-based synthesis model of CBACPWs is developed. To validate the filter synthesis method, a DBBPF oper- ating at GSM and GPS bands is designed, simulated and measured. A good agreement between simulation and mea- surement is obtained.

关 键 词：Dual-band bandpass filter Asymmetriccoplanar waveguide Asymmetric topology Filter synthe-sis. 

分 类 号：TN713[电子电信—电路与系统] TN713.5