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2013-01-23
A Novel Half Hemispherical Dielectric Resonator Antenna with Array of Slots for Wideband Applications
By
Progress In Electromagnetics Research C, Vol. 36, 207-221, 2013
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 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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