Abstract
A triangle-shaped coupled-resonator microstrip patch antenna is presented for ultra-wideband wireless applications. The antenna achieves bandwidth of 116.5% with electrical dimension of 0.154 lambda x 0.133 lambda x 0.016 lambda at the lower frequency band. The operating bandwidth of proposed antenna is 3.07-11.6 GHz with more than 80% efficiency and about 5.5 dBi gain. A triangular couple resonator is added on the patch to enhance the antenna performance, and antenna ground is modified to get higher bandwidth. The antenna performances have been analyzed using the finite integration technique of computer simulation technology microwave studio and validated with another EM simulating software HFSS and in measurement.