Dual-band filters with independent passbands based on perturbed grounded patch resonators

Abstract

In this paper, two novel dual-band filters with independent passbands are proposed, which operate according to the IEEE 802.11b/g/n standard. The filters are based on a rectangular grounded patch, modified by introducing an edge slot perturbation. In that way, separate control of the couplings at both operating frequencies of the filter is achieved, resulting in independent control of both the position and the bandwidths of two filters passbands.

Keywords:

• dual-band
• dual-mode
• grounded patch resonator
• filter

Acknowledgments

This work has been partially supported by European Commission through FP7 Project MultiWaveS “Multiband Electronically Reconfigurable Microwave Devices and Antennas for a New Generation of Wireless Systems,” Grant No. PIRSES-GA-2009-247532 and by the National Research Foundation of South Africa Grant CSUR 83269.