High efficiency power amplifier

Details High efficiency power amplifier High efficiency power amplifier

1994-09-21

1995-07-18

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including class d amplifier

330207A, 330306, H03F 3217

Patent

active

054345405

ABSTRACT:
In a high efficiency F-class amplifier, output current may be reduced to cause distortion of the current, or deterioration of high efficiency operation of the amplifier, when an instantaneous output voltage of an amplifying transistor becomes lower than a saturation voltage. To prevent this, the peak value of the high freqency instantaneous output voltage is restricted by a peak value restricting circuit provided in parallel to a load. Thus, an ideal high efficiency amplifier can be provided by avoiding distortion of the output current.

REFERENCES:
patent: 4717884 (1988-01-01), Mitzlaff
1 EEE Transaction on Electron Devices vol. ED-14, No. 12, Dec. 1967 pp. 851-857.

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