Wideband Performance of Discretized Sochacki Lenses

As part of a program to develop natural plastic lenses, a series of lenses were designed using the Sochacki equations and simulated in commercially available software. Designs to be cut from bulk materials of εr 2.1, 2.3 and 2.53 were prepared, discretized into 4, 6, 8 and 10 layers and simulated as 8λ0 radius lenses. Directivity ripple was found across 17% bandwidth with all scalar feed positions. Despite the 0.1 to 0.5dB ripple, aperture efficiencies of 80 to 90% were achieved.