Dual-band bandpass filter with source-load coupling

被引：7
作者：
Gao, S. [1 ]
Xiao, Z. -Y. [1 ]
Chen, W. -F. [1 ]
机构：
[1] Shanghai Univ, Sch Commun & Informat Engn, Shanghai 200072, Peoples R China
来源：
ELECTRONICS LETTERS | 2009年 / 45卷 / 17期
关键词：
STEPPED-IMPEDANCE RESONATORS;
D O I：
10.1049/el.2009.1656
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 dual-band bandpass filter is presented for wireless LAN applications. Using two centrally-loaded stepped-impedance resonators, the second passband frequency can be conveniently tuned. Two transmission zeros are generated between the two passbands because of source-loading coupling topology. Simulated results show that two central frequencies are located at desired 2.4 and 5.7 GHz with 3 dB fractional bandwidths of 18.8 and 7.1%, respectively. Comparison of measured and simulated results shows good agreement.
引用
收藏
页码：894 / U52
页数：2
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[1]   Dual-Wideband Bandpass Filter Using Short-Circuited Stepped-Impedance Resonators [J].
Chin, Kuo-Sheng ;
Yeh, Jun-Hong .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2009, 19 (03) :155-157
[2]   A compact dual-band bandpass filter using meandering stepped impedance resonators [J].
Chu, Qing-Xin ;
Chen, Fu-Chang .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2008, 18 (05) :320-322
[3]   Dual-Band Bandpass Filter With Improved Performance in Extended Upper Rejection Band [J].
Kuo, Jen-Tsai ;
Lin, Huei-Ping .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2009, 57 (04) :824-829
[4]   Compact dual-band bandpass filter using trisection hairpin resonator for GPS and WLAN applications [J].
Liu, H. -W. ;
Lv, Y. -F. ;
Zheng, W. .
ELECTRONICS LETTERS, 2009, 45 (07) :360-361
[5]   Geometrical structures and fundamental characteristics of microwave stepped-impedance resonators [J].
Sagawa, M ;
Makimoto, M ;
Yamashita, S .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1997, 45 (07) :1078-1085
[6]   Miniature dual-band filter using quarter wavelength stepped impedance resonators [J].
Singh, Pramod K. ;
Basu, Sarbani ;
Wang, Yeong-Her .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2008, 18 (02) :88-90
[7]   Novel centrally loaded resonators and their applications to bandpass filters [J].
Zhang, Xiu Yin ;
Xue, Quan .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2008, 56 (04) :913-921
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