Abstract
With the rapid development of communication capacity, the demand for ultra-wideband (UWB, 3.1–10.6 GHz, allocated by the Federal Communications Commission of the United States, FCC) antenna has been increasing in wireless communication system. However, some other narrow band such as WLAN band (5.15–5.825 GHz), WiMAX band (3.4–3.6 GHz) and C-band satellite communication system (3.7–4.2 GHz) will inevitably disturb the operation signal. Consequently, band-notched antennas have attracted more and more attentions. In this paper, we present a 5.5 GHz band-notched ultra-wideband planar antenna loaded by complementary split ring resonator (CSRR) to reject unwanted WLAN band. The CSRR etched on the radiation patch is used to achieve band-notched performance. The VSWR, band-notch behavior and radiation pattern are analyzed by full wave simulation software High Frequency Structure Simulator (HFSS) version 12.0. This proposed UWB antenna works from 3.301 GHz to 10.695 GHz, with a band-notch from 5.064 GHz to 5.706 GHz band.
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