Title :
Miniaturised dual-band rat-race coupler based on double-sided parallel stripline
Author :
Liu, G.-Q. ; Wu, Lin-Sheng ; Yin, Wen-Yan
Author_Institution :
Key Lab. of Minist. of Educ. for the Res. of Design & EMC of High Speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A dual-band rat-race coupler is proposed with double-sided parallel stripline topology, phase inverter and E-shaped impedance transformers. The developed component shows a miniaturised size and a flexible frequency ratio of two operating bands. For validation, a prototype operating at 0.9/1.8 GHz has been designed and measured with a very compact configuration and good performance has been obtained.
Keywords :
impedance convertors; invertors; microstrip couplers; E-shaped impedance transformers; compact configuration; double-sided parallel stripline topology; flexible frequency ratio; frequency 0.9 GHz; frequency 1.8 GHz; miniaturised dual-band rat-race coupler; miniaturised size; operating bands; phase inverter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.1488
