Experimental demonstration of a phased-array antenna optically controlled with phase and time delays

ArticleinApplied Optics 35(26):5293-300 · September 1996with34 Reads
Impact Factor: 1.78 · DOI: 10.1364/AO.35.005293 · Source: PubMed

The experimental demonstration and the far-field pattern characterization of an optically controlled phased-array antenna are described. It operates between 2.5 and 3.5 GHz and is made of 16 radiating elements. The optical control uses a two-dimensional architecture based on free-space propagation and on polarization switching by N spatial light modulators of p × p pixels. It provides 2(N-1) time-delay values and an analog control of the 0 to 2π phase for each of the p × p signals feeding the antenna (N = 5, p = 4).