Accession Number : ADD000191

Title :   Digitally Controlled RF Sweep Generator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hughes,Alexander S ; Taylor,Sidney A

Report Date : 12 Feb 1974

Pagination or Media Count : 10

Abstract : The patent relates to an RF signal inputted to a digitally controlled RF phase shifter. The RF phase shifter is responsive to digital signal commands and operates to shift the phase of the RF input signal and its frequency in response to the digital signal input. The relationship between change in frequency versus change in phase over a time interval requires that the phase shift rate of change be varied parabolically for the frequency to change linearly with time. The phase change is, therefore, accomplished by parabolically incrementing the digital count, relative to time. The RF frequency is thereby linearly swept about the RF center frequency.

Descriptors :   *Sweep generators, *Patents, Phase shift circuits, Radiofrequency generators, Digital systems

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE