Wideband Bandpass Filter with Excellent Selectivity Using Anti-coupled Line

DOI

10.2991/scict-14.2014.16How to use a DOI?

Keywords

anti-coupled line; bandpass filter; transmission zeros; rejection bandwidth; skirt selectivity

Abstract

A simple anti-coupled line circuit configuration is proposed to design wideband bandpass filter with sharp skirt selectivity in this paper. Good skirt selectivity can be achieved with two transmission zeros near the passband. The location of transmission zeros and bandwidth of passband can be adjusted by changing the impedance of the configuration. A compact wideband bandpass filter prototype with 20 dB rejection bandwidth of 61.4% is designed and fabricated. In order to further improve the skirt selectivity and stopband rejection level, two identical filter prototypes were directly cascaded. The cascaded filter exhibits a competitive attenuation slope of 262.2 and 75.9 dB/GHz in the lower and upper passband transitions, respectively.

Copyright

© 2014, 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  - Liming Liang
AU  - Shulan Li
AU  - Yuanan Liu
AU  - Cuiping Yu
PY  - 2014/05
DA  - 2014/05
TI  - Wideband Bandpass Filter with Excellent Selectivity Using Anti-coupled Line
BT  - Proceedings of the 2nd International Conference on Soft Computing in Information Communication Technology
PB  - Atlantis Press
SP  - 64
EP  - 66
SN  - 1951-6851
UR  - https://doi.org/10.2991/scict-14.2014.16
DO  - 10.2991/scict-14.2014.16
ID  - Liang2014/05
ER  -