Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Patent
1997-04-09
1999-06-22
Le, Dinh
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
327113, 327116, 327119, 327362, H03B 1900
Patent
active
059146206
ABSTRACT:
A method and system of frequency multiplying a signal having amplitude modulation using a frequency multiplier operated at a bias voltage that is less than its saturation mode voltage is described. Prior to amplification, the amplitude modulated signal is pre-distorted to compensate for distortion caused by the frequency multiplier. A first pre-distortion phase converts the amplitude modulated signal into a corresponding square root signal to compensate for a first distortion type. A second pre-distortion phase pre-distorts the square root signal to compensate for the distortion caused by biasing the frequency multiplier at a voltage less than the saturation voltage of the multiplier. As a result, a signal that is amplitude modulated can be multiplied by a frequency multiplier.
REFERENCES:
patent: 3796960 (1974-03-01), Frizzle et al.
Simons Brent S.
Stockton G. William
Le Dinh
Wytec, Inc.
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