Coherent optical monolithic phased-array antenna steering system

Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array

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356349, H01Q 322, G01B 1100

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053330005

ABSTRACT:
An optical-based RF beam steering system for phased-array antennas comprising a photonic integrated circuit (PIC). The system is based on optical heterodyning employed to produce microwave phase shifting by a monolithic PIC constructed entirely of passive components. Microwave power and control signal distribution to the antenna is accomplished by optical fiber, permitting physical separation of the PIC and its control functions from the antenna. The system reduces size, weight, complexity, and cost of phased-array antenna systems.

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