Nonlinear current mirror for loop-gain control
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United States of America Patent
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Jan 30, 2001
Grant Date -
N/A
app pub date -
Jul 21, 1998
filing date -
Jul 21, 1998
priority date (Note) -
Expired
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Abstract
A nonlinear current mirror for loop-gain control incorporates a resistor in one section of a current mirror which produces a nonlinear transfer function for the current mirror. When the nonlinear current mirror is included as part of a capacitive displacement gauge the gain of the gauge varies as a function of the input to the current mirror which compensates for the change in gain caused by the probe capacitance. Accordingly, the distance range and/or frequency response of the capacitive displacement gauge is increased.
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