Harmonic cancellation circuit for an RF switch branch
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United States of America Patent
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Jan 19, 2016
Grant Date -
Sep 18, 2014
app pub date -
Mar 14, 2014
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
Disclosed is a harmonic cancellation circuit for an RF switch branch having a first transistor with a first gate terminal and a first body terminal, a second transistor having a second gate terminal coupled to the first body terminal, and having a second body terminal coupled to the first gate terminal. Also included is a first resistor coupled between a first coupling node and the second body terminal, and a second resistor coupled between a second coupling node and the first body terminal, wherein the first transistor and second transistor are adapted to generate an inverse phase third harmonic signal relative to a third harmonic signal generated by the RF switch branch, such that the inverse phase third harmonic signal is output through the first resistor and the second resistor to the RF switch branch to reduce the third harmonic signal.
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