Hybrid high power amplifier

A hybrid amplifier apparatus comprising:

• a switching amplifier for producing a high efficiency waveform of a first shape;
• a reference waveform generator for producing a reference waveform of a second shape different than said first shape;
• a clock for synchronizing said high efficiency waveform and said reference waveform;
• a comparator for comparing said high efficiency waveform to said reference waveform to produce a difference waveform that is formed from a mathematical difference between said high efficiency waveform and said reference waveform;
• a linear amplifier for amplifying said difference waveform to produce an amplified difference waveform;
• and
• a summer for summing said amplified difference waveform and said high efficiency waveform to produce an amplified waveform of a shape substantially similar to said reference waveform.

A hybrid amplifier apparatus comprising:

• a Class D switching amplifier for producing a high efficiency waveform of a squarewave shape;
• an attenuator/scaler for attenuating/scaling said high efficiency waveform to produce an attenuated/scaled high efficiency waveform;
• a reference waveform generator for producing a reference waveform of a sinusoid shape;
• a clock for synchronizing said high efficiency waveform and said reference waveform;
• a comparator for comparing said attenuated/scaled high efficiency waveform to said reference waveform to produce a difference waveform that is formed from a mathematical difference between said attenuated/sealed high efficiency waveform and said reference waveform;
• a linear amplifier for amplifying said difference waveform to produce an amplified difference waveform;
• and
• a summer for summing said amplified difference waveform and said high efficiency waveform to produce an amplified waveform that is of a shape substantially similar to said reference waveform of said sinusoid shape.