Compact dual wideband asymmetric cross patch antenna fed by cross strip line for WLAN and WiMAX applications

Abstract

This paper presents a compact dual wideband asymmetric cross patch antenna fed by cross strip line for WLAN and WiMAX applications over the frequency band of (WLAN: 2.4-2.484 GHz, 5.15-5.35 GHz and 5.725-5.825 GHz) and (WiMAX: 2.5-2.69, 3.3-3.7, and 5.25-5.85 GHz). The antenna designed on an FR4 substrate with a thickness of 1.6 mm and the relative permittivity of 4.4, is fed by a 50Ω transmission line with SMA connector, and is of size with 25mm × 35mm in dimensions. The measured results show that the compact antenna achieves a broad operating bandwidth of 2.38-2.79 GHz and 4.51-5.87 GHz for |S11|<; -10 dB and omnidirectional radiation pattern. The measured gains of the antenna at 2.4 GHz and 5.5 GHz frequencies are 1.55 dBi and 3.11 dBi, respectively.