UWB L-probe proximity fed V-slot patch antenna for early detection of breast cancer

An ultra wide-band (UWB) V-slot patch antenna is designed and simulated on microwave substrate with ∈_r= 2.2 using single layer planar circuit board technology. The V-slot patch antenna is electromagnetically excited by an L-probe feed. The simulated impedance bandwidth of 57.5% centered on 7.3 GHz is achieved with a peak gain of 6.8 dB. In addition to the wide bandwidth, the structure also has the advantage of high and steady gain over the broad frequency range. The structural properties such as small form factor and low cost of this antenna makes it a suitable building block for a microwave sensor array for breast cancer detection. The full wave EM simulator FEKO was employed for characterizing the antenna element.