Accession Number : ADD013508

Title :   Differential Sample and Hold Circuit.

Descriptive Note : Patent, Filed 8 Jun 79, patented 21 Apr 81,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Senger, Stephen J

Report Date : 21 Apr 1981

Pagination or Media Count : 15

Abstract : An angle servo preamplifier for use in the tracking antenna servo drive system of a precision tracking radar system. The angle servo preamplifier processes tracking error signals indicative of tracking antenna pointing errors with respect to a target. The preamplifier is comprised of an input differential amplifier stage, a phase control stage, a sample and hold stage and a power amplifier stage. In addition, interfacing circuitry is included for coupling the preamplifier to the azimuth/secant correction system of the tracking radar system. The sample and hold stage includes 'deglitching' circuitry for suppressing sampling/switching transients. And, to accommodate a bipolar tracking error signal while utilizing a single voltage supply, the power amplifier stage performs d.c. level translation. (Patents)

Descriptors :   *ANTENNAS, *BIPOLAR SYSTEMS, *PATENTS, *PREAMPLIFIERS, *RADAR TRACKING, *SERVOMECHANISMS, AIMING, ANGLES, AZIMUTH, ERRORS, PRECISION, SAMPLING, SIGNALS, SWITCHING, TRACKING, TRANSIENTS, TRANSLATIONS, VOLTAGE

Subject Categories : Active & Passive Radar Detection & Equipment
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE