Abstract
The design and development of a triple-band slot loaded circular microstrip antenna is demonstrated in this paper for the applications of C (4.66-8 GHz) and X (8.91-9.93 GHz) bands. The proposed antenna design consists of a pair of connected square slots which are centrally inserted on the circular radiating element. The antenna resonates at three frequencies of 4.76, 7.45 and 9.27 GHz with impedance bandwidths of 3.98% (4.67-4.86 GHz), 17.40% (6.82-8.12 GHZ) and 14.48% (8.58-9.92 GHz) respectively. The antenna is excited through a simple 50-Ω microstripline feed. The proposed antenna may suitable for uplink and downlink of C-band satellite communication and of X band radar applications. The simulation results are obtained by utilizing 3-D full-wave finite element method based high frequency structural simulator (HFSS) for comparison of experimental results. Acceptable agreement is observed between the both simulation and experimental results.
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