Authors:-V. Lakshmi Parvathi, P. Siddaiah
Abstract:-In this paper, the circular microstrip patch antenna is designed for wireless devices and cognitive radio application purposes. In the proposed structure, a circular microstrip patch antenna with pin diodes, circular slot having the centre frequency at 10 GHz was designed. The frequency reconfiguration is achieved by switching the pin diodes on/off states and the simulated results are obtained between the frequency ranges from 10.15 GHz to 10.711 GHz for two diodes case, 10.089-10.44 GHz for three diodes case, 9.82-10.66 GHz for four diodes case. The patch antenna is designed on FR4 substrate with ɛr=4.54 and thickness t=1.6 mm. The proposed simulation model is constructed on HFSS13.0 simulation software.
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