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:

1974-10-21

Pagination or Media Count:

20.0

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