Title :
Tri-band branch-line coupler with T-type and additional port impedance transformers
Author :
Lin, Feng ; Chu, Qing-Xin
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
A novel branch-line coupler with T-type and additional port impedance transformers is presented for tri-band operation. Closed-form design equations are derived. For verification, a microstrip 3-dB branch-line coupler operating at 2.45/3.5/5.5 GHz is designed, fabricated and measured. The measured results are in good agreement with the simulated results.
Keywords :
impedance convertors; microstrip couplers; T-type transformer; closed-form design equation; frequency 2.45 GHz; frequency 3.5 GHz; frequency 5.5 GHz; microstrip branch-line coupler; port impedance transformer; triband branch-line coupler; Couplers; Dual band; Equations; Impedance; Mathematical model; Transmission line measurements;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348899
