Usable frequency bands and their relative propagation characteristics
Abstract
The regulatory process by which frequency bands for DBS-TV services are assigned and the propagation characteristics of the bands are discussed from a European perspective. Transmission in the dm, cm, and mm bands is examined, and it is shown that the dm bands assigned (700 and 2600 MHz), well suited to tropical countries due to their low susceptibility to rain attenuation, are poorly suited to the high-directivity requirements of European DBS. Of the cm bands assigned (12 and 22 GHz), only the former is available for use in Europe, although both offer the potential of high-directivity low-attenuation transmission. The mm bands (42 and 85 GHz) remain as a technological reserve for future development.
- Publication:
-
IN: Satellite Broadcasting; Congress on Electronics
- Pub Date:
- 1985
- Bibcode:
- 1985sbce.proc..219T
- Keywords:
-
- Direct Broadcast Satellites;
- Microwave Attenuation;
- Satellite Television;
- Television Transmission;
- Atmospheric Attenuation;
- Centimeter Waves;
- Decimeter Waves;
- Europe;
- Millimeter Waves;
- Tropical Regions;
- Communications and Radar