The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 1986
Filed:
Oct. 18, 1983
Applicant:
Inventors:
Michinori Naito, Tokyo, JP;
Shigeru Miyamoto, Tokyo, JP;
Assignee:
Trio Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D / ;
U.S. Cl.
CPC ...
329124 ; 331 / ; 3311 / ;
Abstract
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.