標題: | Compact and Dual-Band Arbitrary Power-Split Quadrature Coupler Using the Composite Right/Left-Handed Transmission Lines |
作者: | Chi, Pei-Ling Chang, Wen-Yuan 資訊工程學系 電機學院 Department of Computer Science College of Electrical and Computer Engineering |
關鍵字: | Composite right/left-handed (CRLH);dual-band;large power division ratio;quadrature coupler |
公開日期: | 2014 |
摘要: | In this paper, a dual-band quadrature coupler is proposed for arbitrary power divisions using the composite right/left-handed (CRLH) transmission lines. The presented prototype is based on two identical CRLH transmission lines of 50 ohm and a pair of lumped-element parallel tanks loaded to the CRLH host lines. The power division ratio at either frequency is determined by the electrical length of the 50-Omega CRLH lines, which facilitates coupler realization of arbitrary power split, even for a large division ratio. By applying the CRLH lines, the dual operating frequencies as well as the corresponding power split ratios can be arbitrarily designed, which on the contrary is infeasible by microstrip lines. Two coupler prototypes were developed for power division ratios of 10/10 dB and 10/6 dB at 0.9/1.8 GHz. In particular, the first fabricated coupler occupies only 18% footprint of the 0.9-GHz microstrip branch-line coupler. Experimental results are in good agreement with simulation data. |
URI: | http://hdl.handle.net/11536/136119 |
ISBN: | 978-4-9023-3931-4 |
期刊: | 2014 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC) |
起始頁: | 16 |
結束頁: | 18 |
顯示於類別: | 會議論文 |