Patent ID: 6327462
Filing Date: 2001-12-04
Classification: H01Q,H03F,H03G,H04B

Abstract:
A wireless communications device having an amplifier module which is configured to amplify the radio frequency signal with increased efficiency, the amplifier module comprising:an input terminal which receives a control signal comprising a plurality of pulses, wherein the number of pulses within a predetermined time period identify a desired power output level;a control circuit in communication with the control signal, the control circuit comprising at least one counter which counts the number of pulses occurring within the predetermined time period to generate a control value;a first memory array in communication with the control value, the first memory array comprising multiple entries, each entry comprising a power value, wherein the first memory outputs the power value which corresponds to the control value that is indicative of the desired power output level;a second memory array in communication with the control value, the second memory array comprising multiple entries, each entry comprising a bias value, wherein the second memory outputs the bias value which corresponds to the control value; andan amplifier circuit which is in communication with the power value, the bias value and a radio frequency signal, the amplifier circuit configured to vary the amplification of the radio frequency signal based on the power and bias values wherein the power and bias values increase the efficiency of the amplifier at the desired power level.