Patent ID: 6321072
Filing Date: 2001-11-20
Classification: H03F,H04B

Abstract:
A wireless communication device, comprising:a power amplifier configured to amplify a signal for transmission by an antenna over a communications channel;a power level sensor configured to sense the power level radiated from the antenna;a comparator configured to compare the power level sensed by said power level sensor and a desired output power level and to provide an output indicating the difference between the two;an integrator configured to integrate the output from said comparator to provide an output indicating an error level; anda transfer function generator, comprising:a non-linear function generator configured to provide an output that is a non-linear function of an input representing the output from said integrator,a linear function generator configured to provide a linear output as a function of an input representing the output from said integrator,a junction configured to combine said non-linear output with said linear output;a first tuning device to control turning on said non-linear function generator; anda second tuning device to control the output of said linear function generator;wherein said transfer function generator is configured to provide a non-linear response to the error signal generated by the integrator to compensate for non-linearity introduced elsewhere in the communication device.