Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-08-22
2006-08-22
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S253000, C330S258000
Reexamination Certificate
active
07095281
ABSTRACT:
Provision is made of a differential amplifier arrangement with a current source (S1), two controllable paths (T1, T2), which are in each case coupled by one terminal to the current source (S1) and the control terminals of which form the input of the differential amplifier arrangement. Via a respective cascode circuit (K1, K2), a load (L1, L2) is respectively connected to the first and second controllable paths (T1, T2). At least one tap (A1) between one of the loads and one of the cascode circuits forms an output of the differential amplifier arrangement. Provision is made of a comparison means (D1) having two inputs, which is designed for outputting a control signal dependent on a comparison. A first input is coupled to the first tap (A1) and the second input is designed for feeding a reference signal. Furthermore, the differential amplifier arrangement contains a regulable current source (G1), the control input of which is connected to the output of the comparison means and the current output of which is connected to the second terminal (P1) of at least the first controllable path (T1).
REFERENCES:
patent: 3803505 (1974-04-01), Ishigaki et al.
patent: 5475323 (1995-12-01), Harris et al.
patent: 5587687 (1996-12-01), Adams
patent: 6137362 (2000-10-01), Dufossez
patent: 6466061 (2002-10-01), Popescu et al.
patent: 6583661 (2003-06-01), Tanji et al.
patent: 0 511 707 (1992-11-01), None
“Halbleiterschaltungstechnik”, Tietze et al., Springer Publishing, 2002, Chapter 4.1.3, 31 pgs.
“A Universal Dual Band LNA Implementation in SiGe Technology for Wireless Applications”, Axel Schmidt and Stephane Catala, IEEE Journal of Solid State Circuits, vol. 36, No. 7, Jul. 2001, pp. 1127-1131.
“A Dual-Band RF Front-End for WCDMA and GSM Applications”, Jussi Ryynänen, Kalle Kivekäd, Jarkko Jussila, Aarno Pärssinen and Kari A. I. Halonen, IEEE Journal of Solid Stte Circuits, vol. 36, No. 8, Aug. 2001 pp. 1198-1204.
“A New Design Aproach for Variable-Gain Low Noise Amplifiers”, S. Pennisi, S. Scaccianoce, and G. Palmisano, IEEE Radio Frequency Integrated Circuit Symposium, 2000, 4 pgs.
“Dual-Band High-Linearity Variable-Gain Low-Noise Amplifiers for Wireless Applications”, Keng Leong Fong, IEEE International Solid State Circuits Conference, 1999, 11 pgs.
Schelmbauer Werner
Stöger Claus
Zipper Josef
Eschweiler & Associates LLC
Infineon Technologies Ag
Nguyen Patricia
LandOfFree
Differential amplifier arrangement with current regulating... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential amplifier arrangement with current regulating..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential amplifier arrangement with current regulating... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3606831