Linear transmitter design for MSAT terminals

摘要: One of the factors that will undoubtedly influence choice modulation format for mobile satellites, is availability cheap, power-efficient, linear amplifiers terminal equipment operating in 1.5-1.7 GHz band. Transmitter linearity not easily achieved at these frequencies, although high power (20W) class A/AB devices are becoming available. However, components expensive and require careful design to achieve a modest degree linearity. In this paper an alternative approach radio frequency (RF) amplifier satellite (MSAT) terminals using readily-available, cheap C feedback architecture presented.