Patent ID: RE42447

Claim:
A circuit for providing amplification to signals, the circuit comprising: a signal combiner, wherein said combiner is a modified balanced magnetic transformer, said transformer being devoid of a center tap to ground connection; at least two signal amplifiers each receiving and amplifying a signal, said signal amplifiers being coupled in parallel to said combiner, each of said signal amplifiers having a low output impedance and acting as a voltage source, wherein each signal received and amplified by each of said signal amplifiers is phase modulated , and wherein at least one of the at least two amplifiers is configured to operate as a class F amplifier ; outputs of each of said signal amplifiers are added by said combiner to produce a resulting signal, said signal amplifier outputs being coupled to terminals of an input winding of said transformer; and amplitude modulation of said resulting signal from said combiner is achieved by an addition of said outputs.