Title :
A compact rat race coupler design for dual-band applications
Author :
Wong, Fai-Leung ; Cheng, Kwok-Keung M.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin
Abstract :
This paper presents the novel design of a compact rat-race coupler that can operate at two widely separated frequency bands. This is accomplished by modifying the branch line impedance values and the insertion of two additional shunt stubs into the conventional design. The proposed circuit also features planar structure and low insertion loss. For verification, both simulated and measured performance of a microstrip rat-race coupler operating at 900/1500 MHz are shown.
Keywords :
UHF couplers; microstrip couplers; branch line impedance; compact rat race coupler design; dual-band applications; features planar structure; frequency 1500 MHz; frequency 900 MHz; microstrip rat-race coupler; shunt stubs; Circuit simulation; Coupling circuits; Design engineering; Dual band; Equations; Frequency; Impedance; Insertion loss; Microstrip; Passive circuits; couplers; dual-band; rat race;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429508
