Coplanar-Waveguide Ultra-Wideband Bandpass Filter Based on Interdigital Structure

DOI

10.2991/iset-15.2015.46How to use a DOI?

Keywords

Bandpass filter, Coplanar waveguide, Defected ground structure, Interdigital coupling, Ultra wideband

Abstract

In this paper, a novel ultra wideband (UWB) bandpass filter based on interdigital structure is proposed. The proposed UWB bandpass filter is designed on coplanar waveguide (CPW) with the passband obtained by interdigital structure on the step-change center strip of CPW. The rectangular curling slots are adopted to improve the stopband characteristics and the normal slots are used to restrain the insertion loss of the filter in passband. The interdigital structure and all slots are on the same side of a circuit board which makes the UWB bandpass filter compact and easily realized. Simulations and measurements verify the design idea and the proposed filter has a more than 150% -3dB fractional bandwidth centered at 5.56 GHz as well as sharp skirt selectivity at the upper passband edge.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yanyan Peng
AU  - Feng Xu
PY  - 2015/03
DA  - 2015/03
TI  - Coplanar-Waveguide Ultra-Wideband Bandpass Filter Based on Interdigital Structure
BT  - Proceedings of the First International Conference on Information Science and Electronic Technology
PB  - Atlantis Press
SP  - 183
EP  - 185
SN  - 2352-538X
UR  - https://doi.org/10.2991/iset-15.2015.46
DO  - 10.2991/iset-15.2015.46
ID  - Peng2015/03
ER  -