Table of Contents
International Journal of Microwave Science and Technology
Volume 2015, Article ID 345326, 7 pages
Research Article

Design of Miniaturized Multiband Filters Using Zero Order Resonators for WLAN Applications

1Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287, USA
2Department of Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846 13114, Iran

Received 23 November 2014; Revised 15 February 2015; Accepted 18 February 2015

Academic Editor: Giancarlo Bartolucci

Copyright © 2015 Maryam Shafiee 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.


The objective of this paper is to design miniaturized narrow- and dual-band filters for WLAN application using zero order resonators by the method of least squares. The miniaturization of the narrow-band filter is up to 70% and that of the dual-band filter is up to 64% compared to the available models in the literature. Two prototype models of the narrow-band and dual-band filters are fabricated and measured, which verify the proposed structure for the filter and its design by the presented method, using an equivalent circuit model.