Compact duplexer for the UWB system using novel CRLH bandpass filters

Author

Boram Lee ; Geonho Jang ; Sungtek Kahng ; Da-jeong Eom ; Inkyu Yang ; Kyungseok Kahng ; Kim, Heonhwan

Author_Institution

Dept. of Inf. & Telecomm. Eng., Univ. of Incheon, Incheon, South Korea

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

247

Lastpage

249

Abstract

In this paper, a miniatuirized duplexer for the lower-half UWB is implemented. Firstly, to reduce the size, novel metamaterial CRLH bandpass filter structures are designed for the duplexer of the 2 channels (3.2GHz ~ 3.7GHz and 4.3GHz ~ 4.7GHz). Secondly, they are further changed to have transmission zeros to improve channel selectivity. Finally, the optimized geometry of the duplexer is obtained to hold the proposed bandpass filters. The presented design methodology is validated through the EM simulation and the measurement. Besides, the performance and size-reduction effect of proposed design is addressed.

Keywords

band-pass filters; metamaterials; ultra wideband communication; EM simulation; UWB system; channel selectivity; compact duplexer; lower-half UWB; metamaterial CRLH bandpass filter; miniatuirized duplexer; optimized geometry; size-reduction effect; transmission zeros; Band pass filters; Couplings; Filtering theory; Geometry; Metamaterials; Microwave filters; Resonator filters; Bandpass filter; Channel Selectivity; Duplexer; Metamaterial CRLH structure; Miniaturization; UWB;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421561

Filename

6421561