Amplifiers – With semiconductor amplifying device – Including balanced to unbalanced circuits and vice versa
Reexamination Certificate
2006-08-08
2006-08-08
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including balanced to unbalanced circuits and vice versa
C330S307000, C330S252000
Reexamination Certificate
active
07088184
ABSTRACT:
The invention concerns an integrated circuit amplifier designed to supply an amplified signal at a power of a few hundreds of milliwatts at frequencies from one to several Gigahertz. The final stage of the amplifier comprises two signal amplification input points E and E′ receiving in differential mode a signal to be amplified, and four main transistors of the same type of conductivity, each having a base, an emitter and a collector, including a first transistor or output transistor mounted in common emitter configuration, whereof the collector is linked to the output of the integrated circuit, a second transistor mounted in voltage follower configuration between the point E and the base of the output transistor, a third transistor mounted in common emitter configuration, having its collector linked to the base of the output transistor, a fourth transistor mounted in voltage follower configuration having its base linked to the point E′ and its emitter linked to the base of the third transistor, the circuit also comprising a first current source linked to the base of the first transistor and a second current source linked to the base of the third transistor and to the emitter of the fourth transistor.
REFERENCES:
patent: 4254381 (1981-03-01), Wheatley, Jr.
patent: 5034701 (1991-07-01), Debroux
patent: 5159286 (1992-10-01), Ito
patent: 5278518 (1994-01-01), Debroux
patent: 5376900 (1994-12-01), Debroux
patent: 5506525 (1996-04-01), Debroux
patent: 5530404 (1996-06-01), Debroux
patent: 5844443 (1998-12-01), Wong
patent: 5914639 (1999-06-01), Debroux
patent: 5994959 (1999-11-01), Ainsworth
patent: 6806769 (2004-10-01), Imayama et al.
ATMEL Grenoble S.A.
Lowe Hauptman & Berner LLP
Nguyen Patricia
LandOfFree
High frequency amplifier in an integrated circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High frequency amplifier in an integrated circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High frequency amplifier in an integrated circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3632233