Patent ID: 8294464

Claim:
An apparatus, comprising: a high frequency radio frequency (RF) signal generator to generate an RF signal at a high frequency; a balun network that inputs the RF signal with respect to ground and converts the input RF signal into a pair of first and second balanced out-of-phase signals with respect to ground at the high frequency; a push-pull amplifier comprising a first field effect transistor (FET) driven by the first out-of-phase signal and a second FET driven by the second out-of-phase signal, the first and second FETs being connected in a push pull configuration; and where the first and second FETs switch an on-coil current-mode class-D (CMCD) amplifier that includes two CMCD FETs that drive an inductance-capacitance (L-C) leg to control production of an RF signal at the high frequency by a transmit coil associated with high field parallel magnetic resonance imaging (MRI).