標題: Dual-Band Rat-Race Coupler With Arbitrary Power Divisions Using Microwave C-Sections
作者: Wu, Cho-Yu
Chiou, Yi-Chyun
Kuo, Jen-Tsai
傳播研究所
Institute of Communication Studies
關鍵字: Arbitrary power division;dual-band;microstrip;microwave C-section;miniaturization;rat-race
公開日期: 2009
摘要: Rat-race coupler is designed to have dual-band operation, a miniaturized area, and arbitrary power division using microwave C-sections. With a C-section and two transmission line sections attached to both of its ends, an elementary two-port is designed to play the role of a quarter-wave section in a conventional rat-race. It is designed to possess phase changes of 90 degrees and 270 degrees at the first and second frequencies, respectively. Transcendental equations are derived for calculating its structure parameters. Two circuits operating at 2.45/5.8 GHz with various output power ratios are fabricated and measured. Both couplers have only 31% area of conventional rat-race at the first band. It is believed that these circuits have the best size reduction for microstrip dual-band rat-race with arbitrary power division in open literature. Measured results agree well with their simulation counterparts.
URI: http://hdl.handle.net/11536/13723
ISBN: 978-1-4244-2801-4
期刊: APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5
起始頁: 2108
結束頁: 2111
顯示於類別:會議論文