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

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050338

Filename

6050338