This paper presents the microstrip antenna with triangular tuning stub which designed and simulated by using IE3D program.This antenna is designed for 50 Ohms impedance microstrip line for dual band frequency,2.297-2.952 GHz and 5.138-6.051 GHz which supports WLAN communications coverage IEEE 802.11b/g (2.4-2.4835 GHz),IEEE 802.16a (5.15-5.35 GHz) and IEEE 802.16d (5.7-5.9 GHz).The bandwidth at lower resonance frequency of this antenna is 0.655 GHz,while upper resonance frequency is 0.913 GHz.The simulation results show that the lower and upper resonance frequencies are agreed with the measurement results.
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