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Title: Precision digital pulse phase generator

Abstract

A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
870636
Patent Number(s):
5563605
Assignee:
Regents of University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
precision; digital; pulse; phase; generator; timing; comprises; crystal; oscillator; connected; provide; output; reference; resistor-capacitor; combination; variable-delay; input; monitor; duty-cycle; representations; operational; amplifier; drives; control; voltage; according; currents; integrated; injected; summing; junctions; digital-to-analog; converter; injects; current; code; servo; equilibrium; results; provides; delay; linearly; depends; phase delay; control voltage; generator comprises; reference pulse; output pulse; operational amplifier; digital control; digital-to-analog converter; phase monitor; crystal oscillator; analog converter; /342/

Citation Formats

McEwan, Thomas E. Precision digital pulse phase generator. United States: N. p., 1996. Web.
McEwan, Thomas E. Precision digital pulse phase generator. United States.
McEwan, Thomas E. Mon . "Precision digital pulse phase generator". United States. https://www.osti.gov/servlets/purl/870636.
@article{osti_870636,
title = {Precision digital pulse phase generator},
author = {McEwan, Thomas E},
abstractNote = {A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

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