Title :
A dual-band 180° hybrid coupler with a filter response
Author :
Lee, Yi-Chi ; Pang, Yi-Hsin ; Huang, Hsiang-Cheh
Author_Institution :
Department of Electrical Engineering, National University of Kaohsiung, Taiwan
Abstract :
This study presents a dual-band 180° hybrid coupler with a filter response. The hybrid coupler consisting of four coupled stepped-impedance resonators has a second-order Chebyshev filter response. A 2.45/5.8-GHz filtering 180° hybrid coupler has been designed and fabricated on a Rogers RO4003C substrate for WLAN applications. The insertion loss 1/|S21| is about 3+1.2/3+1.5 dB, and isolation are better than 24 dB. The proposed design can be used for dual-band and multifunctional applications.
Keywords :
Band-pass filters; Couplers; Couplings; Dual band; Ports (Computers); Resonator filters; 180° hybrid coupler; Bandpass filter; dual-band;
Conference_Titel :
Microwave Conference (APMC), 2014 Asia-Pacific
