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Abstract
A microstrip fed dual-band design of monopole patch antenna with three stubs is presented in this paper. Printed on a dielectric substrate and fed by a 50 Ω microstrip line, a rectangular patch antenna with 3 stubs is demonstrated to generate two separate resonant modes to cover 2.4/5.2/5.8 GHz (wireless local area network) WLAN bands with satisfactory radiation properties. The impedance bandwidth of the proposed antenna is 400 MHz at 2.4 GHz band (2250–2650 MHz, 16.3%) and 920 MHz at 5 GHz band (4990–5910 MHz, 16.9%). The performances of this antenna are highly desirable for 2.4 and 5 GHz dual-band WLAN applications. The parameters which affect the performance of the antenna in terms of its frequency domain characteristics are investigated in this paper.
