Accession Number : ADD002173
Title : Frequency Multiplier Circuit.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Linder,John L
Report Date : 21 Oct 1974
Pagination or Media Count : 20
Abstract : The patent application relates to a digital frequency correlator circuit for comparing the frequencies of a plurality of a-c signals to determine if they are coherent within a predetermined number of cycles. The a-c signals are converted into digital numbers representing their frequencies. The digital numbers are subtracted and the difference is compared, utilizing an exclusive-or circuit, with a predetermined number of cycles. If the difference is greater than the predetermined number of cycles, a logic '0' is outputted. If the difference is equal to or less than the predetermined number of cycles, a logic '1' is outputted.
Descriptors : *Correlators, Patents, Digital systems, Frequency, Coherence, Doppler systems, Satellite tracking systems
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE