Ultra-broadband V-band fractal T-square antenna

A corner CPW-fed T-square fractal antenna is proposed. This fractal layout provides a wider bandwidth compared to typical square patches. The proposed antenna is designed to operate within the V-band millimeter-wave frequency range and found to cover a 10 dB return loss bandwidth of 19.2 GHz which presents 54.9% of the entire V-band. The ground plane of the antenna is limited to the feeding line, and a monopole-like radiation pattern is achieved. The gain values gradually increase throughout the ultra-broadband operational bandwidth and reaches a maximum value of 5.7 dBi. The efficiency of the antenna is considered high with a maximum value of 87.6%. The layout of the antenna can be scaled in order to fit other frequency bands; such as the ultra-wideband frequency band.