Title :
A novel reduced-size rat-race coupler using stepped impedance structure
Author :
Shry-Sann Liao ; Yi-Ju Wang ; Hsien-Yuan Liao ; Chen-Yen Lai
Author_Institution :
Dept. of Commun. Eng., Feng Chia Univ., Taiwan, China
Abstract :
In this study, we propose a novel reduced-size rat-race coupler using stepped impedance structure with the bended and folded techniques. The bandwidth of this circuit is over 45%, and the size reduction is over 80%. The proposed method does not need any lumped elements, via hole grounding, and bonding wires, which lead to a low cost and simple fabrication process. It is very suitable for the MICs and MMICs applications.
Keywords :
MMIC; waveguide couplers; MIC application; MMIC application; bended technique; bonding wires; folded technique; lumped elements; rat-race coupler; stepped impedance structure; via hole grounding; Bandwidth; Bonding; Costs; Coupling circuits; Fabrication; Grounding; Impedance; MMICs; Microwave integrated circuits; Wires;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2004. ICMMT 4th International Conference on, Proceedings
Print_ISBN :
0-7803-8401-6
DOI :
10.1109/ICMMT.2004.1411530
