The IF is up-converted and applied to an active element phased array antenna that incorporates GaAs MMIC power amplifier. The antenna converts the RF signal to an electromagnetic field properly polarized for the earth fixed cell. The RF signal is down-converted to an IF signal, demodulated and decoded. As technology becomes more sophisticated, the types of satellites, each with its own special advantages, abound. No longer are they used merely for weather stations, TV signal transmissions, or for military purposes.
Satellites touch our lives daily, enabling truly wireless marvels of communication.
He is involved in the reliable design of spacecraft subsystems for interplanetary spacecraft, of particular interest to him are the Telecommunication subsystems.