Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-06-27
2006-06-27
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S311000
Reexamination Certificate
active
07068104
ABSTRACT:
A power amplifier utilizes cascode arrangements to achieve target performance levels for a power amplifier, such as the type used in wireless communication devices. A negative resistance circuit is provided for the cascode arrangement such that high gain, or oscillation, is promoted during operation of the power amplifier. In one embodiment, the negative resistance circuit includes cross-coupling transistors. Various features are provided in order to reduce the susceptibility of the power amplifier to voltage breakdown while maintaining good performance.
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Burns Lawrence M.
Szeto Clement
Woo Chong L.
Amalfi Semiconductor, Inc.
Choe Henry
Law Offices of Terry McHugh
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