Patent ID: 6553211
Filing Date: 2003-04-22
Classification: H03F

Abstract:
A method of using a pilot signal, said method comprising the steps of:producing a signal on a main signal path and a portion of said signal on a feed forward path; adjusting a power level of a pilot signal on a pilot injection path relative to a power level of said signal on said main signal path to produce a change in said power level of said pilot signal where the amount of said change depends on said power level of said signal on said main signal path; injecting said adjusted pilot signal onto said main signal path before an amplifier on said main signal path; amplifying said signal and said adjusted pilot signal on said main signal path; obtaining a portion of said amplified signal and said amplified pilot signal from said main signal path; combining said portion of said amplified signal and said amplified pilot signal with said portion of said signal on said feed forward path to produce a pilot signal on said feed forward path; and injecting said pilot signal on said feed forward path onto said main signal path.