Linear tapered slot antenna with substrate integrated waveguide feed

Tapered slot antennas (TSA) are lightweight, and low cost per element but retain directivity close to horn antennas. They are planar elements, so they can be integrated on the same substrate as an appropriate feed. The TSA design presented in this paper utilizes antipodal flares and the backwards extension match technique. However the design investigates techniques to increase element gain using high permittivity substrates and demonstrates the TSA capability at high frequency (18-24 GHz).