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An investigation on three element multilayer cylindrical dielectric resonator antenna excited by a coaxial probe for wideband applications

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3 Author(s)
Chaudhary, R.K. ; Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, India ; Srivastava, K.V. ; Biswas, A.

The main objective of the present study is to improve the bandwidth of the dielectric resonator antenna (DRA). A new three-element multilayer cylindrical dielectric resonator antenna (MCDRA) array above the ground plane is proposed here. MCDRA is easy to design and excited with HE11dδ mode excited in each MCDRA by centrally placed dielectric resonator in which TM01dδ mode excited. The effect of design parameters such as permittivity of materials, probe height and arrangement of dielectric layers are investigated and the excited modes (i.e. TM01dδ and HE11dδ) are also been confirmed by simulations. The simulation is performed on Ansoft's HFSS package. The proposed multilayer cylindrical dielectric resonator antenna (MCDRA) can offer an impedance bandwidth of ~47% for the return loss below -10dB where frequency range is from 4.5 to 6.8 GHz and resonance frequency is 4.91 GHz with monopole like radiation pattern and it is stable in the passband with 5.06 dB gain.

Published in:

Applied Electromagnetics (APACE), 2010 IEEE Asia-Pacific Conference on

Date of Conference:

9-11 Nov. 2010

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