Integrated All-Dielectric Lens Antenna for Compact Antenna Test Range System

In this paper, an integrated all-dielectric lens antenna is proposed, which is applied to generate near-field pseudo-plane waves in a compact antenna test range (CATR). The lens antenna, comprising a TEM feed horn and an all-dielectric lens, is modeled and optimized automatically by the evolutionary algorithm (using a GA-II). The aperture of the final optimized lens is 50 mm × 50 mm, and the profile height of the antenna is 140mm. Simulation results show that the quiet zone (QZ) range of the lens antenna at 1.5 GHz is 40 mm × 40 mm, the phase ripple is ± 5 °, and the amplitude ripple is ± 0.5 dB.