標題: A reconfigurable filter based on doublet configuration
作者: Liao, Ching-Ku
Chang, Chi-Yang
Lin, Jenshan
電信工程研究所
Institute of Communications Engineering
關鍵字: coupling matrix;reconfigurable filter;electrically tunable filter;frequency control;planar filter
公開日期: 2007
摘要: A surrogate model is proposed to model a previously published second-order tunable filter. The surrogate model can be represented by a coupling matrix in a doublet configuration, and a simple method based on the even-odd mode bisection is given to extract the coupling matrix. From the extracted parameters, one can decide how to design a filter with prescribed quasi-elliptic responses and how to adjust varactors to reconfigure the response. Using the proposed methods, the second-order filter can be configured to have a finite transmission zero on either the lower side or the upper side of the passband in a prescribed location even when the center frequency of the filter is tuned. Both simulated and measured results of an example are presented.
URI: http://hdl.handle.net/11536/11590
ISBN: 978-1-4244-0687-6
ISSN: 0149-645X
期刊: 2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-6
起始頁: 1602
結束頁: 1605
顯示於類別:會議論文