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Small dual‐frequency shorted patch antenna

In this paper we present a small dual‐frequency printed antenna based on a square shorted‐patch configuration with an embedded slot to generate the second resonant frequency. The antenna resonance is at 1.58 and 2.6 GHz with 10‐dB return‐loss bandwidths of 1.3% and 3.3% for the lower and higher resonances, respectively. The overall dimensions of the antenna are 0.105λ0 × 0.105λ0 × 0.05λ0 and it is simple to construct. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1225–1227, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21574