True Time Delay with Binary Time Delay Control for Large Arrays

摘要

In this paper we present a new design for an optical device for producing true time delay. The device, based on the White Cell incorporated with an optical spatial light modulator (SLM). The White cell gives rise to a multiple bounce approach, where the number of bounces is "m". The SLM allows a large number of independent beams and therefore antenna elements. In previous work we had designs where the number of time delays went as msquared. Here we present a design where the number of delays goes as two-to-the-power-m. The result is decreased loss and increased antenna array size.