Title :
Design of a compact broadband branch-line hybrid
Author :
Chun, Young-Hoon ; Hong, Jia-Sheng
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Heriot-Watt Univ., Edinburgh, UK
Abstract :
This paper presents the design of a broadband branch-line coupler. The proposed coupler features compact size on a single circuit layer structure. For the high power capability, broadband property and cost effectiveness, we have designed, fabricated and tested a new three-branch hybrid with lumped-distributed-elements. It has the fractional bandwidth of 45% at the center frequency of 2 GHz. Also, it shows the size reduction more than 35 % compared with the conventional design method.
Keywords :
distributed parameter networks; lumped parameter networks; microstrip couplers; microstrip lines; 2 GHz; branch-line coupler; compact broadband branch-line hybrid; lumped-distributed-elements; microstrip line; planar circuits; single circuit layer structure; Bandwidth; Costs; Coupling circuits; Design engineering; Design methodology; Equivalent circuits; Frequency; Power engineering computing; Switches; Transmission line matrix methods;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1516833
