Patent ID: 7701308

Claim:
A radio frequency modulator system, comprising: a radio frequency amplifier having: an amplifier transistor having a control electrode fed by a radio frequency signal, and; an energy storage element connected to the RF amplifier transistor; wherein the amplifier transistor has an output electrode for producing an amplification of the radio frequency signal when a dc voltage relative to a reference potential is coupled to such output electrode; a pulse modulator comprising: a first switching circuit response to an input pulse for coupling the dc voltage to the output electrode when the radio frequency signal is to be amplified by the radio frequency amplifier and for decoupling the dc voltage from the output electrode when the radio frequency signal is to be decoupled from the output electrode wherein charge is stored in the storage element when the dc voltage is coupled to the output electrode; and: a second switching circuit responsive to the input pulse for discharging the stored charge when the dc voltage is decoupled from the output electrode.