Accession Number : ADD009415

Title :   VHF Sensor in-Band Radio Relay.

Descriptive Note : Patent Application,


Personal Author(s) : Abrams,Burton S ; Zeger,Andrew E

Report Date : 27 Nov 1981

Pagination or Media Count : 19

Abstract : Disclosed is an in-band, non-sampling, real time VHF radio relay or signal repeater for use in two-way, multi-hop remote sensor data links. Each signal repeater comprises a transceiver which includes interference cancellation circuits for preventing the high level signal produced by the radio repeater's transmitter section from desensitizing the low noise RF amplifier circuitry incorporated in the front end of the radio repeater's receiver section. Such apparatus is utilized to implement a remote sensor data collection network consisting of a plurality of subject radio repeaters and several sensors normally arranged in groups. The data which flows over the relay network can either originate at the sensors and flow to a read out station or it may originate at the read out station and flow to the sensors. Sensor originated information may be either digital or analog, or both, while read-out station originated information is digital only.

Descriptors :   *Patent applications, *Radio relay systems, *Radio repeaters, Transmitter receivers, Radio receivers, Radio transmitters, Interference, Repeaters, Cancellation, Signals, Circuits, Detectors, Intensity

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE