A dual‐band shorted patch antenna proximity‐fed by a combined L‐ and T‐probe feed structure

Measured results of a dual-band shorted patch antenna excited by a combined L- and T-probe feed structure are presented. By using foam layers of thickness ∼0.12λ1 and ∼0.06λ2 to support the patches that are responsible for the lower and upper bands, impedance bandwidths (SWR ≤ 2) of 54.4% and 49.1% have been obtained, respectively. The far-field patterns are stable across the passband. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 127–129, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10844