A GCPW-fed Lens-integrated On-chip Single-ended Slot UWB Antenna

In this paper, a compact GCPW-fed lens integrated on-chip single-ended slot ultra wide band (UWB) antenna has been proposed. The antenna is designed for a terahertz (THz) chip in an InP HBT technology. The slot is excited by a circular patch probe located along the slot circumference, whereby the mutual coupling between them is exploited to extend the antenna operation bandwidth. The antenna has a 10-dB impedance bandwidth of 110-400 GHz with stable radiation patterns. With an extended hemispherical lens, the antenna can achieve a 22 dB peak gain.