A Compact 1.9-2.9 GHz Tunable Bandpass Filter with Wide Stopband Range

被引：0

作者：

Chen, Yi-Ming ^{[1
]}

Chang, Sheng-Fuh ^{[1
]}

Tsai, Zuo-Ming ^{[1
]}

Chao, Tai-Chuan ^{[1
]}

机构：

[1] Natl Chung Cheng Univ 168, Dept Elect Engn, Dept Communicat Engn, Ctr Telecommunicat Res, Chiayi, Taiwan

来源：

2013 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC 2013) | 2013年

关键词：

Tunable bandpass filter; transmission zero; immittance inverter;

D O I：

暂无

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 presents a compact broadband tunable bandpass filter with wide stopband range. The combline topology is adopted, where the varactor-loaded stepped-impedance resonator is used for frequency tuning. A double-stub parallel-line transformer at input/output port is used for generating multiple transmission zeros and matching port and resonator impedances. The measured performances show that the tuning frequency range of 1.9 to 2.9 GHz (51% tuning range) is achieved. The insertion loss is between 2.9 dB and 1.5 dB and the return loss is better than 18.5 dB. The stopband suppression greater than 20 dB is obtained up to 10 GHz. The circuit design, EM simulation and experimental comparison are described.

引用

页码：200 / 202

页数：3

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20151500741028
[J]. (1) School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu; 611731, China; (2) National University of Singapore, Department of Electrical and Computer Engineering, Singapore; 117576, Singapore, 1600, et al.; IEEE Sendai Section, The Japan Institute of Electronics Packaging; The Institute of Electronics, Information and Communication Engineers (IEICE); The Technical Committee on Electronics Simulation Technology, Electronics Society, IEICE; The Technical Committee on Microwave Photonics, Electronics Society, IEICE; The Technical Committee on Microwaves, Electronics Society, IEICE (Institute of Electrical and Electronics Engineers Inc., United States):

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