Title :
Design of Various Compact Branch-Line Couplers by Using Artificial Transmission Lines
Author :
Chang, Kook Hyun ; Nam, Kyung Min ; Kim, Jeong Phill
Author_Institution :
Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul
Abstract :
In this paper, a compact and easy to fabricate branch-line couplers, which can be used for tight and weak couplings with high directivity, is proposed. For these purpose, various artificial transmission lines (ATLs) are incorporated. Design of 3 dB and 10 dB couplers are designed and their characteristics are measured. Good electrical performance and circuit miniaturization indicate the validity of the present theory
Keywords :
microstrip couplers; transmission lines; artificial transmission lines; circuit miniaturization; compact branch-line couplers; tight couplings; weak couplings; Couplers; Coupling circuits; Distributed parameter circuits; Impedance; Microstrip; Microwave circuits; Transmission line matrix methods; Transmission line theory; Transmission lines; Wireless communication; ATL (Artificial Transmission Line); Branch-line coupler; Miniaturization;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249713
