Patent ID: 6859104

Claim:
A tunable power amplifier comprising: a power amplifier; a ferro-electric tunable component coupled to the power amplifier; a power amplifier output matching circuit coupled to the power amplifier, having an impedance and comprising the ferro-electric tunable component; a control line operably coupled to the ferro-electric component; a control source electrically coupled to the control line, the control source configured to transmit a control signal on the control line; wherein the ferro-electric component, responsive to the control signal, adjusts the impedance of the matching circuit; and wherein the matching circuit comprises: a first tunable ferro-electric capacitor coupled at a first end of the first capacitor to an output of the power amplifier and to ground at a second end of the first capacitor; an inductive element coupled at a first end of the inductor to the first tunable capacitor and to the power amplifier, and; a second tunable ferro-electric capacitor coupled, at a first end of the second capacitor to a second end of the inductive element and to ground at a second end of the second capacitor; wherein, the ferro-electric component comprises one of the ferro-electric tunable capacitors; a second inductive element coupled at a first end of the second inductive element to the second end of the first inductive element; and a third ferro-electric tunable capacitor coupled at a first end of the third capacitor to a second end of the second inductive element and at a second end of the third capacitor to ground.