Perforated Rectangular Dielectric Resonator Antenna for Wideband, Dual Band and Single Band Application

In this work, a perforated rectangular dielectric resonator antenna is proposed for wide band, dual band, single band application. Co-axial probe is used for excitation and metal strip is attached to improve the impedance matching. The slots drilled for perforations are filled with different dielectric materials to excite resonant modes; TE
₁₁₁
^x
, TE
₁₃₁
^x
, TE
₁₅₁
^x
. Thus wideband design offers bandwidth of 32.55% at resonant frequency of 2.92 GHz (2.716 - 3.64 GHz) for air filled slots. The dual band designs offer bandwidth of 11% (2.23 - 2.47 GHz) at 2.32 GHz, 3.2%(3.94 - 4.07 GHz) at 4.01 GHz for dielectric material with ε
_r
=9.2: 8.7% (2.1 -2.29 GHz) at 2.18 GHz, 3% (3.70 - 3.81 GHz) at 3.76 GHz for ε
_r
=12.85. The single band design offers bandwidth of 12% (2.35 - 2.65 GHz) at 2.48 GHz for εr=6.15.