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X-shaped ultra-wide band dielectric resonator antenna used for microwave imaging applications

Presently, the microwave imaging has been used for the detection of breast cancer because of its non-ionized radiation, painless and cost effective nature. This research article presents a compact ‘X’-shaped Dielectric Resonator Antenna (DRA) for UWB characteristics with impedance bandwidth of 8.6 GHz (i.e. 5.4-14GHz) that is used for microwave imaging to detect the breast cancer. For the detection of breast cancer leading requirements are UWB sensor with good peak gain and directional radiation properties. All these requirements are full-filled by the proposed DRA that has a compact DRA with volumetric dimensions of 20 × 15 × 5.67mm3. It has four layers i.e. defected ground plane followed by substrate of FR-4, feedline of copper and X shaped dielectric resonator of alumina. The proposed DRA structure operates a peak gain of 4.6dB and dual polarized behavior. So it is a suitable candidate for the detection of breast cancer using microwave imaging technique.