Abstract

A novel highly scalable adaptive photonic beamformer is proposed and experimentally verified. A single-mode-to-multimode combiner allows our system to recycle the same set of wavelengths for each antenna in the array. A “blind” search algorithm called the guided accelerated random search (GARS) algorithm is shown. A maximum cancellation of ∼37 dB is achieved within 50 iterations, while the presence of a signal of interest (SOI) is maintained. Cancellation across the 900 MHz and 2.4 GHz bands are shown to prove the broadband nature of the optical beamformer.

© 2014 IEEE

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