Vol. 36

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2013-01-23

A Novel Half Hemispherical Dielectric Resonator Antenna with Array of Slots for Wideband Applications

By Biswajeet Mukherjee, Pragati Patel, Gopi Shrikanth Reddy, and Jayanta Mukherjee
Progress In Electromagnetics Research C, Vol. 36, 207-221, 2013
doi:10.2528/PIERC12122002

Abstract

A novel half Hemispherical Dielectric Resonator Antenna (HDRA) with an array of slots has been designed. The dielectric material used is Rogers TMM10, which is a ceramic thermoset polymer composite material having a dielectric constant of εr = 9.2. Periodic holes lower down the Q factor of the antenna and hence enhance the impedance bandwidth. The measured value of the 10 dB bandwidth is close to 1 GHz (~17.74%). The mode investigated is a TM101 like mode. Further, the effect of increasing the probe length on the resonance and the radiation pattern is also studied. As the probe length is increased, a shift in the resonant frequency is observed and the Dielectric Resonator Antenna (DRA) behaves as a monopole antenna loaded with the DRA. The experimental results confirm that a wide bandwidth of 1.3 GHz (~29%) with a high gain of 7.2 dBi can be obtained. The radiation pattern of such an antenna is directive in nature.

Citation


Biswajeet Mukherjee, Pragati Patel, Gopi Shrikanth Reddy, and Jayanta Mukherjee, "A Novel Half Hemispherical Dielectric Resonator Antenna with Array of Slots for Wideband Applications," Progress In Electromagnetics Research C, Vol. 36, 207-221, 2013.
doi:10.2528/PIERC12122002
http://www.jpier.org/PIERC/pier.php?paper=12122002

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