FREQUENCY DEPENDENCE OF AVAILABLE SIGNAL POWER AS MINIMUM BEAMWIDTH VARIES FOR AN EARTH ANTENNA OF LIMITED PHYSICAL SIZE (One Watt Free Space - 1000 KM Distance - Isotropic Space Antenna) AVAILABLE SIGNAL POWER - DB BELOW ONE WATT 80 FREQUENCY DEPENDENCE OF AVAILABLE SIGNAL POWER AS MAXIMUM SIZE VARIES FOR AN EARTH ANTENNA OF FIXED MINIMUM BEAMWIDTH FREE SPACE AVAILABLE SIGNAL POWER DIRECTIVE TRANSMITTING AND RECEIVING ANTENNAS - DB BELOW ONE WATT 10 M 20 30 40 FIGURE 7 |