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Title: Compact UWB bandpass filter with reconfigurable notched band
Authors: Rabbi, K.
Athukorala, L.
Panagamuwa, C.J.
Vardaxoglou, J.C.
Budimir, D.
Keywords: Ultra-wide band
Wireless communication
Issue Date: 2013
Publisher: © Institution of Engineering and Technology
Citation: RABBI, K. ... et al., 2013. Compact UWB bandpass filter with reconfigurable notched band. Electronics Letters, 49 (11), pp. 709-711.
Abstract: A compact bandpass filter is presented for ultra-wideband (UWB) applications with a reconfigurable notched band to reject unwanted signals from the WiMAX systems. A single pin diode is used for the purpose of switching the notch. An optical switch, comprised of a silicon dice activated using near infrared light is also investigated as an alternative to the pin diode. While the switch is in the ON state this reconfigurable filter behaves as a bandpass filter with a notch at 3.5 GHz and a full band response is obtained in the OFF state. The filter offers excellent performance for the lower-band frequency of a UWB system, ranging from 3.1 to 5.0 GHz and exhibits very low passband insertion loss. Also, transmission zeros are generated at the passband edges to enhance the signal selectivity. A filter sample has been designed and fabricated to provide experimental verification on the proposed filter. A good agreement has been achieved between simulated and measured results with both the pin diode as well as the optical switch. The proposed reconfigurable filter with notched band was able to achieve 40% size reduction as compared to an embedded open-circuited stub.
Description: This paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology copyright. The copy of record is available at IET Digital Library.
Version: Accepted for publication
DOI: 10.1049/el.2012.3555
URI: https://dspace.lboro.ac.uk/2134/22678
Publisher Link: http://dx.doi.org/10.1049/el.2012.3555
ISSN: 0013-5194
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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