Distortion compensation for a capacitively loaded follower

Details Distortion compensation for a capacitively loaded follower Distortion compensation for a capacitively loaded follower

1997-01-30

1999-02-09

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327362, H03K 508

Patent

active

058699937

ABSTRACT:
The odd harmonic distortion components in the output signal of a capacitively loaded follower transistor is reduced by means of an additional transistor inserted between the emitter of the follower transistor and the bias current source of the follower transistor. A second follower transistor receives the same input signal as the follower transistor and has its emitter coupled to the emitter of the additional transistor via a compensation capacitor. The current through the compensation capacitor is added to the output current and compensates for the odd harmonic distortion.

REFERENCES:
patent: 4523110 (1985-06-01), Johnson
patent: 5339078 (1994-08-01), Vernon
patent: 5345120 (1994-09-01), Taylor
patent: 5414382 (1995-05-01), Larson et al.
patent: 5436581 (1995-07-01), Oberhauser
patent: 5656969 (1997-08-01), Pulvirenti et al.

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