Abstract
Frequency management problems, scarcity of orbital position assignment, and resistance to interfering signals are projected to become serious problems for satellite communication (SATCOM) systems operating below about 15 GHz. International frequency allocations in the 15-50 GHz range permit SATCOM system operation with increased frequency bandwidth and hence may eliminate significant frequency management problems. This paper addresses some of the salient factors that influence SATCOM systems operating over the range 7-50 GHz. Propagation losses, frequency variation of a terminal's EIRP, spatial discrimination, and band-width available for spread spectrum AJ are presented as a guide to choosing the operating frequency of an EHF SATCOM system.
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