Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-07-28
2008-10-28
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
Reexamination Certificate
active
07443241
ABSTRACT:
A RF variable gain amplifier with an extended linear tuning range is disclosed. The variable gain amplifier employs a wide swing cascode mirror formed by two cascode transistors and two gain transistors. The two cascode transistors track each other, so are the two gain transistor. The gain transistors operate on the saturation region.
REFERENCES:
patent: 6144233 (2000-11-01), Maruyama
patent: 6744319 (2004-06-01), Kim
patent: 6977553 (2005-12-01), Jin
patent: 2003/0090323 (2003-05-01), Costa
Chang Charles
Fong Neric
Shin Didmin
Nguyen Hieu P
Pascal Robert
VIA Technologies Inc.
Wang Li K.
Wang Law Firm, Inc.
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