Accession Number : AD0163893
Title : Satellite Communications System.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Wilson,Quintus C.
Report Date : 18 JUL 1972
Pagination or Media Count : 5
Abstract : The patent describes a ground-air communications system that includes ground station processors, aircraft, and satellite borne repeaters. Satellite weight and power economies are achieved by scanning with repeater antennas. The preferred embodiment uses a phased array antenna having its antenna elements and amplifiers disposed in the satellite borne repeater and its phase shifting and modulating components disposed in the ground station processor. Phase shifted modulated carrier waves are translated in frequency prior to transmission from the ground station processor and are retranslated to their original frequencies by the repeater. Means are provided to lock transmitted and received carrier waves in phase and frequency.
Descriptors : (*RADIO RELAY SYSTEMS, *PATENTS), (*RADIO TRANSMISSION, SPACE TO SURFACE), PHASE LOCKED COMMUNICATIONS, PHASED ARRAYS, RADIO REPEATERS, RADIO EQUIPMENT, SPACE COMMUNICATIONS
Subject Categories : RADIO COMMUNICATIONS
Distribution Statement : APPROVED FOR PUBLIC RELEASE