Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1991-10-01
1993-09-21
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342175, G01S 1366, H01Q 326
Patent
active
052473090
ABSTRACT:
A fiber optic transmitter/receiver module used for controlling multi-axis beam steering of each individual radiating element in a phased array antenna and which is an integral part of a reconfigurable fiber optic corporate feed concept. In the receive mode of operation an incoming signal is captured, amplified and converted into the light domain by means of optical heterodyning. The relative phase and amplitude of the signal would be controlled by optically adjusting the amplitude and phase of a local oscillator. The local oscillator is sent to each fiber optic transmitter/receiver module. In the transmit mode of operation a signal for transmission which is in the light domain is down converted into the electromagnetic domain using optical mixing techniques. Once again, the relative phase and amplitude of the transmission signal would be controlled by the local oscillator. The beam steering capability is accomplished by configuring the local oscillator for each element of the antenna with a specific amplitude and phase.
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Barron Jr. Gilberto
Grumman Aerospace Corporation
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