Title :
A compact planar dual-band bandpass filter with asymmetric bandwidths
Author :
Huang, Chia-Cheng ; Diao, Chien-Chen ; Huang, Hong-Hsin ; Yang, Cheng-Fu ; Wang, Fang-Hsing ; Chen, Ying-Chung ; Meen, Teen-Hang
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung, Taiwan
Abstract :
Two different lengths of open-loop rectangle-ring resonators were parallelly positioned at two sides of input/output microstrip lines with the same coupling gap and length. The longer open-loop rectangle-ring was designed to resonate at 1.23 GHz and 2.31 GHz. The shorter open-loop rectangle-ring was designed to resonant at 2.52 GHz to improve the bandwidth of 2.4 GHz band. The proposed filter revealed great filtering properties and was suitable to used for the applications of GPS (L2-band, 1.227 GHz), and WLAN (IEEE802.11b/g, 2.4~2.4835 GHz).
Keywords :
UHF filters; UHF resonators; band-pass filters; microstrip filters; microstrip lines; resonator filters; GPS application; asymmetric bandwidth; bandwidth 2.4 GHz; compact planar dual-band bandpass filter; coupling gap; frequency 1.227 GHz; frequency 1.23 GHz; frequency 2.31 GHz; frequency 2.4 GHz to 2.4835 GHz; frequency 2.52 GHz; input-output microstrip line; open-loop rectangle-ring resonator; Band pass filters; Bandwidth; Filtering theory; Microstrip filters; Microwave filters; Resonator filters;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050338
