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Abstract

This paper presents a comparative analysis between two different stacked rectangular dielectric resonator antenna design structures. Two separate stacked Structure has been designed using sapphire and thermoset microwave material TMM13i respectively. Both the antenna design structures are aperture coupled. Due to advantage of aperture coupled feed mechanism such as good isolation between antennas and feed networks it has been employed. The simulation results obtained indicates that sapphire stacked rectangular dielectric resonator antenna design has better performance as compared to the thermoset microwave material TMM13i stacked rectangular dielectric resonator antenna design. The sapphire stacked antenna design exhibits two frequency bands from 7.41GHz to 8.21 GHz and 9.11GHz to 12.65GHz whereas TMM13i stacked antenna shows only one frequency band from 8.62 GHz to 10. 6GHz.The radiation efficiency of sapphire stacked antenna is far more superior than TMM13i stacked antenna. Hence Sapphire stacked rectangular dielectric resonator antenna has proven to be the good material for designing antennas in future and thus can be used for C-band applications as well as X-Band applications.