Method and system for suppressing oscillations in a multi-stage amplifier
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United States of America Patent
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Nov 20, 2001
Grant Date -
Sep 13, 2001
app pub date -
Oct 23, 1998
filing date -
Oct 23, 1998
priority date (Note) -
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Abstract
A multi-stage amplifier for amplifying radio frequency signals includes a first amplifier stage having a first transistor and a second amplifier stage having a second transistor. The first transistor includes a first drain connected to a reference voltage through a first connection circuit. The second transistor includes a second drain connected to a reference voltage through a second connection circuit. The amplifier also includes a first transmission line connecting a portion of the first connection circuit to a portion of the second connection circuit and a resistive element connected in parallel with the first transmission line between the portion of the first connection circuit and the portion of the second connection circuit. The resistive element suppresses oscillation conditions at either of the first and second bias terminals.
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