Automatic wideband quadrature frequency generator
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United States of America Patent
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-
Nov 2, 2004
Grant Date -
N/A
app pub date -
Jun 30, 2003
filing date -
Jun 30, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
When two sine-wave signals in quadrature, the integral of the output is equal to zero. Conversely, when an in-phase signal is inputted as one multiplicand and the output is set to zero, a quadrature signal is derived from the second multiplicand automatically. Any analog multiplier can be used. Examples using differential pair and conductance multiplier have been demonstrated. The multiplier operates over a wideband, and the in phase and quadrature signals can be equalized automatically.
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