Patent ID: 8208874
Filing Date: 2012-06-26
Classification: H03F

Abstract:
1. An amplifier system for powering an element of an antenna, the amplifier system comprising: an RF amplifier means, having a signal amplifying path that includes at least a power output stage; a power supply means for providing a variable value of DC voltage for powering at least said power output stage of said RF amplifier means; and a control means for receiving, as a first control input, an input power signal of said RF amplifier means and, as a second control input, a temperature signal of said RF amplifier means and for providing, based on the first control input and the second control input, a voltage control signal to said power supply means to determine the value of said DC voltage, wherein said control means are arranged such that the value of said DC voltage to said power output stage is varied so as to control the gain compression of said RF amplifier means for varying values of said input power and temperature in order to regulate at least one of amplifier linearity, amplifier efficiency, and thermal dissipation of said RF amplifier means.