Table of Contents
International Journal of Microwave Science and Technology
Volume 2015, Article ID 939521, 5 pages
Research Article

Novel Notched UWB Filter Using Stepped Impedance Stub Loaded Microstrip Resonator and Spurlines

1Department of Electronics & Electrical Engineering, IIT Guwahati, Assam 781039, India
2Ford Motor Pvt. Ltd., Dr. MGR Road, Perungundi, Chennai 600096, India

Received 10 June 2015; Revised 15 August 2015; Accepted 19 August 2015

Academic Editor: Giancarlo Bartolucci

Copyright © 2015 Ramkumar Uikey et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents a novel ultrawideband (UWB) bandpass filter using stepped impedance stub loaded microstrip resonator (SISLMR). The proposed resonator is so formed to allow its four resonant frequencies in the UWB passband, which extends from 3.1 GHz to 10.6 GHz. Moreover, two spurline sections are employed to create a sharp notched-band filter for suppressing the signals of 5 GHz WLAN devices. Experimental results of the fabricated filters are in good agreement with the HFSS simulations and validate the design.