Digital power amplifier

Details Digital power amplifier Digital power amplifier

1990-06-25

1992-05-19

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including class d amplifier

330207A, H03F 3217

Patent

active

051152037

ABSTRACT:
A wideband high efficiency amplification system for amplifying radio frequency signals to high power levels. The system includes components adapted for generating an RF carrier signal having a multi-level waveform which may be characterized as a "modified square wave" including one or more intermediate voltage levels. This RF carrier waveform allows the power of the signal to be amplified with high efficiency beyond the efficiency levels which can ordinarily be achieved with conventional wideband class D amplifiers. The preferred embodiment of the invention describes an amplification system generating and using a three level waveform although waveforms having more than three levels may also be used.

REFERENCES:
patent: Re33333 (1990-09-01), Taylor, Jr. et al.
patent: 4748421 (1988-05-01), Schilling et al.
patent: 4764734 (1988-08-01), Schilling et al.

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