FM demodulator including PLL and improved circuitry for eliminating distortion in the output thereof

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United States of America Patent

PATENT NO 4612511
SERIAL NO

06543027

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Abstract

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An FM demodulator having a phase comparator, a low-pass filter and a VCO including a variable capacitance diode, an input signal being applied to the phase comparator and a demodulated output signal being taken from the low-pass filter. The FM demodulator further includes a compensating circuit consisting of a non-linear element connected between the demodulated output terminal and the VCO, whereby the secondary distortion in the output signal to be caused due to the non-linearity of the variable capacitance diode is canceled.

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Patent Owner(s)

Patent OwnerAddress
TRIO KABUSHIKI KAISHA A JAPAN CORP17-5 SHIBUYA 2 CHOME SHIGUYA KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyamoto, Shigeru Tokyo, JP 124 3964
Naito, Michinori Tokyo, JP 12 81

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