An ultrawide band W-band end-fire antenna on flexible organic substrate

This paper presents, for the first time, a low cost ultra wide band (16.8 GHz bandwidth) end-fire Tapered Slot Antenna(TSA) on organic Liquid Crystal Polymer substrate(LCP). This antenna utilizes novel microstrip-to-slot transition which makes it very wide band (75.5 GHz-92.3 GHz). The antenna was designed and optimized for frequency operation at 80 GHz with a gain of 8 dBi. The gain, S11 and H-plane Co and Cross polarization measurements were conducted and successfully demonstrated a passive antenna gain of 8 dBi from 75.5 GHz to 92.3 GHz with minimal deviation of 2.5 dB. Return loss also demonstrates 16.8 GHz of 10 dB bandwidth.