Gain and bandwidth enhancement for RF power amplifier package
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United States of America Patent
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Oct 15, 2002
Issued Date -
N/A
app pub date -
Jan 10, 2001
filing date -
Jan 10, 2001
priority date (Note) -
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Abstract
Gain and bandwidth enhancement of a RF power amplifier package is effected by electrically coupling a power transistor to a RF signal source with an inductance, and further electrically coupling the input and common element terminals of the power transistor with a shunt inductance. The shunt inductance is chosen such that its reactance is the conjugate of the reactance of the power transistor's common-input capacitance. A similar conjugate matching output circuit is provided to electrically couple the transistor's output and common element terminals to a load. The shunt inductors are implemented on the package substrate by connecting the respective input and output transistor terminals to grounded shunt caps via bond wires.
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