Phase noise reduction in LC-VCO
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United States of America Patent
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Feb 2, 2016
Grant Date -
Dec 10, 2015
app pub date -
Jun 4, 2014
filing date -
Jun 4, 2014
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Abstract
An approach for a transconductance cell for use in a voltage controlled oscillator (VCO) is provided. The transconductance cell includes a first NFET stack connected in series to a first PFET stack. The transconductance cell includes a second NFET stack connected in series to a second PFET stack. The first NFET stack and the first PFET stack are cross-coupled to the second NFET stack and the second PFET stack. The first NFET stack and the second NFET stack are connected to a tail node. The first PFET stack and the second PFET stack are connected to a power supply node.
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