Linearized distributed amplifier architecture
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United States of America Patent
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Jul 2, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jun 29, 2017
filing date -
Jul 12, 2016
priority date (Note) -
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Abstract
A distributed amplifier (DA) is disclosed. The DA includes a first plurality of inductive elements coupled in series forming a first plurality of connection nodes. The DA also includes a second plurality of inductive elements coupled in series forming a second plurality of connection nodes. The DA further includes a plurality of amplifier cells that each has a main transistor and a cascode transistor coupled into a cascode configuration. The cascode transistor has a current input coupled to a corresponding one of the first plurality of connection nodes. An input transistor has a control terminal coupled to a corresponding one of the second plurality of connection nodes, a current input terminal configured to provide a bias tuning for the DA, and a third current output terminal coupled to a control terminal of the main transistor and configured to provide a separate bias tuning for the DA.
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