Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate
2007-01-23
2010-10-05
Shingleton, Michael B (Department: 2815)
Amplifiers
With semiconductor amplifying device
Including gain control means
C330S285000, C330S254000, C330S266000, C330S272000, C330S130000
Reexamination Certificate
active
07808322
ABSTRACT:
A system comprises a variable gain amplifier (VGA) that amplifies an input signal with a gain that is based on a gain control signal. A power amplifier receives an output of the VGA. Memory switches between at least two of N output power settings each including a predetermined reference value and a predetermined gain offset value. The memory substantially concurrently changes from the predetermined reference value and the predetermined gain offset value of a prior one of the N output power settings to the predetermined reference value and the predetermined gain offset value of a current one of the N output power settings, where N is an integer greater than one. A gain control adjuster adjusts the gain control signal based on an output of the power amplifier and the predetermined reference value and gain offset value of the current one of the N output power settings.
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Chao Yuan-Ju
Son Sang Won
Tsai King Chun
Tse Lawrence
Marvell International Ltd.
Shingleton Michael B
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