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A compact uniplanar EBG structure and its application in band-notched UWB filter

Published online by Cambridge University Press:  18 February 2013

Lalithendra Kurra ,
Mahesh P Abegaonkar ,
Ananjan Basu  and
Shiban K Koul
Lalithendra Kurra
Affiliation:
Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi – 110016, India
Mahesh P Abegaonkar*
Affiliation:
Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi – 110016, India
Ananjan Basu
Affiliation:
Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi – 110016, India
Shiban K Koul
Affiliation:
Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi – 110016, India
*
Corresponding author: Mahesh P. Abegaonkar Email: mpjosh@care.iitd.ac.in
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Abstract

In this paper, a new way of obtaining a band rejection in a ultra wideband (UWB) filter using a uniplanar Electromagnetic bandgap (EBG) structure is reported. The EBG structure has a bandgap centered at 6.69 GHz which is almost 38% lower compared with the conventional uniplanar EBG of same dimensions. A one-dimensional EBG structure coupled with a microstrip line provides a narrow bandgap, which is used in obtaining a notch in the UWB filter. Single notch UWB filters with variations in the placement of EBG are fabricated producing a notch centered at 5.19 GHz (wireless local area network (WLAN)). A dual notch (5.16 and 8.24 GHz (satellite communication)) UWB filter is also fabricated with two different unit cell EBGs'. Switchable and tunable notch band UWB filters are proposed.

Keywords

Electromagnetic bandgapNotch bandResonatorUniplanarUWB
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Issue 4 , August 2013 , pp. 491 - 498
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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