Configurable bias tee
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United States of America Patent
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Jan 24, 2017
Grant Date -
Sep 24, 2015
app pub date -
Oct 23, 2014
filing date -
Mar 19, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Bias tees, according to certain embodiments of the present invention, include switches in the AC signal path, the DC signal path, or both, to improve the capability of the bias tees to be used for high impedance AC measurement, low current DC measurement, or both. Optical control of the switches, as well as control of the switches using a DC bias present within the AC signal input to the bias tee, is described. Including a set of diodes into the DC signal path, rather than a switch, provides enhanced capability of the bias tee to be used for high impedance AC measurements.
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