Wideband balanced BPF design for MB-OFDM applications

Author

Chen, Chung-jung ; Wang, Siang-Wei ; Lee, Ching-Her ; Hsu, Chung-I G. ; Chen, Hsun-Hsiang

Author_Institution

Nat. Changhua Univ. of Educ., Changhua, Taiwan

fYear

2010

fDate

7-10 Dec. 2010

Firstpage

1082

Lastpage

1085

Abstract

In this article, a new wideband balanced bandpass filter is designed using coupled coplanar waveguide (CPW) stepped-impedance resonators (SIRs) that are fed by microstrip lines at the input and the output ports. For differential-mode (DM) operation, the BPF circuit exhibits wideband bandpass characteristic that meets the requirement of the OFDM group-B bandwidth specification (4.752-6.072 GHz). The minimum passband insertion loss is only 0.43 dB. For common-mode (CM) operation, the insertion loss of larger than 20 dB over 1-10 GHz frequency range is achieved. The occupied area of the fabricated BPF circuit is 9.9 × 10.5 mm². Good agreement was observed between simulated and measured results.

Keywords

OFDM modulation; band-pass filters; coplanar waveguides; microstrip lines; microwave filters; microwave resonators; OFDM group-B bandwidth specification; bandpass filter; bandwidth 4.752 GHz to 6.075 GHz; common-mode operation; coupled coplanar waveguide; differential-mode operation; frequency 1 GHz to 10 GHz; microstrip line fed; multiband-OFDM; stepped-impedance resonators; wideband balanced BPF design; Band pass filters; Coplanar waveguides; Frequency measurement; Microstrip filters; Resonant frequency; Resonator filters; Balanced bandpass filter; common-mode suppression; differential-mode operation; stepped-impedance CPW resonator;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2010 Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-1-4244-7590-2

Electronic_ISBN

978-1-902339-22-2

Type

conf

Filename

5728392