Design and Simulation of Ultra-Wideband Linearly Tapered Slot Antenna for mm-Wave Applications

This paper describes the design of a high-gain ultra-wideband (UWB) linearly tapered slot PCB antenna for mm-wave radar applications. The antenna design was focused on matching differential microstrip to antenna input feed for the best VSWR. For better antenna parameters PTFE lens was added.The antenna is designed as a planar structure on a four-layer PCB on substrate Isola Astra® MT77 with dielectric constant D
k
= 3.0. The dimensions of the antenna without a lens are 18.9x9 mm. The basic simulation of the antenna was performed. The results show the proposed antenna directivity, gain, and low VSWR over the operating frequency. The VSWR of the antenna is under 2, and the designed operation frequencies of an antenna are from 25 GHz to 85 GHz. The maximum achieved gain is 17.6 dBi at 65 GHz.