We propose and experimentally demonstrate two optical architectures that process the receive mode of a p × p element phased-array antenna. The architectures are based on free-space propagation and switching of the channelized optical carriers of microwave signals. With the first architecture a direct transposition of the received signals in the optical domain is assumed. The second architecture is based on the optical generation and distribution of a microwave local oscillator matched in frequency and direction. Preliminary experimental results at microwave frequencies of ~3 GHz are presented.

© 1999 Optical Society of America

[Optical Society of America ]

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