A novel ultra-wideband quasi-yagi antenna for millimeterwave applications

For the first time, we propose a novel quasi-yagi end-fire antenna for wideband applications such as high resolution biomedical imaging, wireless backhaul communication and chip to chip communication in millimeter wave frequency band (67.5-107 GHz). The designed antenna covers a wideband of 39.5 GHz by achieving a fractional bandwidth of more than 45%. The gain of the antenna ranges from 4-6.58 dBi. An excellent radiation efficiency of more than 98% is also reported.