Layered Parallel Interface for an Active Antenna Array.
Patent Application, Filed 24 Jul 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A transmitreceive layer is provided adjacent to an array of antenna elements. The transmitreceive layer has an array of transmit receive modules, each module associated with one of the antenna elements. An analog to digital converter and a digital to optical converter of one of the modules couple an RF signal from the associated antenna element to optical fibers. An optical of RF converter in each of the modules converts an amplitude modulated optical transmit signal from an optical fiber to an RF transmit signal for transmission by the associated antenna element. Frequency down and up converters can be added to perform super heterodyne frequency conversion based on a reference frequency control signal transmitted over the optical fibers. At the ends of the optical fibers opposite to the transmitreceive layer, a receive layer, a transmit layer, transmit and receive beamforming layers, dedicated signal synthesizer, control signals, and amplitude modulated optical diode lasers and photodiodes are provided.
- Fiber Optics and Integrated Optics
- Electrical and Electronic Equipment
- Lasers and Masers