Abstract
A compact triangular slot antenna, suitable for wireless local area network (WLAN) is proposed. Dual frequency band operation that covers the 2.4GHz (2400–2484MHz) and 5GHz (5150–5825MHz) was obtained by embedding three slits in a triangular slot on the ground plane of antenna. The bandwidth of the upper band can be tuned by varying the width of the shorter slit. For the lower band the bandwidth depends on the width of the long slits, besides the length of the slits controls the resonance frequency of the lower band. In order to examine the performance of the antenna, a prototype was fabricated and the desirable parameters were measured. The antenna resonances at 2.45GHz with a bandwidth of 10% (for return loss <−10dB), and at 5.5 GHz with a bandwidth of 24%. Measured results were compared with those simulated by Ansoft High Frequency Structure Simulator (HFFS) software and a good agreement was obtained.
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