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In this paper stacked configuration of microstrip antenna is used to produce broad dual band which is suitable for various wireless applications. Using triangular slot and stacking of foam substrate of dielectric constant 1, two bands of bandwidth 18.10% and 6.20% is obtained. The antenna is fed by coaxial probe feeding technique. The proposed patch antenna is designed on the foam substrate and simulated on the Zeland IE3D software. The antenna parameters such as return loss, impedance bandwidth, VSWR and radiation characteristics such as gain, radiation efficiency and radiation patterns have been studied.
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