Amplifiers – With semiconductor amplifying device – Including plural amplifier channels
Reexamination Certificate
2007-11-30
2009-10-06
Choe, Henry K (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including plural amplifier channels
C330S12400D
Reexamination Certificate
active
07598809
ABSTRACT:
An RF power amplifier includes a plurality of amplifier cells. Each amplifier cell includes a bipolar transistor and a base circuit that comprises an RF coupling capacitor, a bias resistor, a base capacitor, and a base resistor. The base circuit transmits DC bias current and an RF signal to the base of the bipolar transistor to provide a selectable frequency response. The base circuit may be implemented using a structure of stacked capacitors.
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Choe Henry K
DLA Piper (LLP) US
Silicon Storage Technology, Inc.
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