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Title: Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter

Abstract

The quadrature phase angle .phi.(t) of a pair of quadrature signals S.sub.1 (t) and S.sub.2 (t) is digitally encoded on a real time basis by a quadrature digitizer for fractional .phi.(t) rotational excursions and by a quadrature up/down counter for full .phi.(t) rotations. The pair of quadrature signals are of the form S.sub.1 (t)=k(t) sin .phi.(t) and S.sub.2 (t)=k(t) cos .phi.(t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle .phi.(t).

Inventors:
 [1]
  1. (Los Alamos, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
864845
Patent Number(s):
4426620
Assignee:
United States of America as represented by United States (Washington, DC) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
analog; quadrature; signal; phase; angle; data; conversion; digitizer; counter; phi; pair; signals; digitally; encoded; time; basis; fractional; rotational; excursions; rotations; form; cos; common; singularly; desired; required; optionally; digital-to-analog; converter; follow; outputs; provide; output; signal output; quadrature phase; phase angle; analog signal; quadrature signals; digital-to-analog converter; time basis; analog converter; quadrature signal; digitally encoded; /324/327/

Citation Formats

Buchenauer, C. Jerald. Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter. United States: N. p., 1984. Web.
Buchenauer, C. Jerald. Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter. United States.
Buchenauer, C. Jerald. Sun . "Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter". United States. https://www.osti.gov/servlets/purl/864845.
@article{osti_864845,
title = {Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter},
author = {Buchenauer, C. Jerald},
abstractNote = {The quadrature phase angle .phi.(t) of a pair of quadrature signals S.sub.1 (t) and S.sub.2 (t) is digitally encoded on a real time basis by a quadrature digitizer for fractional .phi.(t) rotational excursions and by a quadrature up/down counter for full .phi.(t) rotations. The pair of quadrature signals are of the form S.sub.1 (t)=k(t) sin .phi.(t) and S.sub.2 (t)=k(t) cos .phi.(t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle .phi.(t).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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