Patent ID: 8103353

Claim:
A wide dynamic range power amplifier comprising: a first output driver configured to receive a first input signal comprising a periodic signal and generate a first output signal comprising an amplified replica of said periodic signal; a second output driver configured to receive a second input signal comprising a substantially 180-degree-phase shifted version of said first input signal and generate a second output signal comprising an amplified replica of said second input signal; a matching circuit configured to generate a power signal to be transmitted to an implantable device based on said first and second output signals, said matching circuit comprising a first matching network and a primary coil together residing in-series between said first and second output drivers, wherein said first matching network receives said first output signal and said primary coil receives said second output signal, and a second matching network in-series with a secondary coil that is inductively coupled to said primary coil, said second matching network and said secondary coil together being configured to cooperate with said first matching network and said primary coil to generate said power signal; and a processor configured to receive a control signal input indicating one of a low power mode and a high power mode; wherein said processor is further configured to set said second output signal to zero when said control signal input indicates said low power mode.