Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate
2007-06-12
2007-06-12
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including gain control means
C330S288000
Reexamination Certificate
active
11175943
ABSTRACT:
A bias circuit for biasing a linear input stage of an amplifier comprises a first MOS device having a size. A second MOS device has a size and is arranged with the first MOS device in a cascode configuration. The second MOS device is operated in a saturation region. A third MOS device has a size and biases the first MOS device in a triode region. A bias switch ratio of the size of the first MOS device to the size of the third MOS device is greater than one.
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Chien George
Jin Xiaodong
Tsai King Chun
Tse Lawrence
Choe Henry
Marvell International Ltd.
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