Within the decade of the 1970's, it will be possible to build large, sophisticated, 3-axis stabilized spacecraft which will operate with several kilowatts of d.c. power and be able to furnish thousands of TV channels and hundreds of thousands of voice circuits. These spacecraft will operate to a mixture of large and small space diversity ground stations in the 15- to 40-GHz band. By means of multiple narrow beam, low sidelobe antennas employing polarization isolation, a given frequency band will be reused several times on an individual spacecraft. The message traffic over these spacecraft will be digital, and will be switched inside the spacecraft to furnish connections as needed for low traffic density routes between small, inexpensive ground terminals. (Modified author abstract)
Anticipated Developments in Communications Satellite Technology
1971
29 pages
Report
No indication
English
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