標題: | Filtering Rat-Race Coupler With Transmission Zeros Using Compact Miniaturized Hairpin Resonators |
作者: | Lin, Tsu-Wei Wu, Jen-Yi Kuo, Jen-Tsai 傳播研究所 Institute of Communication Studies |
關鍵字: | Bandpass filter;coupling matrix;rat-race coupler;source-load coupling;transmission zero |
公開日期: | 2015 |
摘要: | A new compact filtering rat-race coupler is implemented by a 2x2 cross coupled configuration based on compact miniaturized hairpin resonators. Passband responses with transmission zeros are synthesized by an (n+4)x(n+4) coupling matrix. The zeros are created in the output ports by adding source-load coupling and their analytical expressions are derived. An experimental circuit is fabricated and measured. The circuit area is only 23.2% of that of a conventional rat-race coupler. Measured magnitude and phase responses of the four-port S-parameters show good agreement with simulation data. |
URI: | http://hdl.handle.net/11536/136045 |
ISBN: | 978-1-4799-1929-1 |
期刊: | 2015 IEEE International Wireless Symposium (IWS 2015) |
顯示於類別: | 會議論文 |