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:
Aug. 01, 1989
Filed:
Mar. 10, 1988
Applicant:
Inventors:
Pei-hwa Lo, Ramsey, NJ (US);
James M Sokolich, Cliffside Park, NJ (US);
Ardis M Matesich, Englewood Cliffs, NJ (US);
Assignee:
Allied-Signal Inc., Morris Township, Morris County, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375 94 ; 455142 ; 329-1 ;
Abstract
Traditionally, the parameters evaluation and characterization of amplitude modulation(AM), frequency modulation(FM) and phase modulation(.phi.M) signals are achieved utilizing analog test and measurement instruments. The advancement of high speed analog to digital converters and digital signal processing techniques have made this digital AM/FM/.phi.M demodulator an accurate, repeatable and cost effective alternative for the test and measurement of various modulation waveforms. This invention illustrates the design of the digital AM/FM/.phi.M demodulator.