Highly linear variable gain amplifier

Details Highly linear variable gain amplifier Highly linear variable gain amplifier

2004-07-13

2008-10-14

Richards, N. Drew (Department: 2816)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S259000, C330S260000

Reexamination Certificate

active

07436262

ABSTRACT:
Disclosed are systems and methods which provide very linear amplification of signals using a linearized transconductance circuit. A transconductance amplifier configuration is shown which provides highly linearized operation utilizing a Darlington pair feedback circuit. Also shown are gain control configurations in which current steering circuitry is adapted to operate in its most linear region.

REFERENCES:
patent: 4070633 (1978-01-01), Gay
patent: 4551687 (1985-11-01), Lukens
patent: 4963836 (1990-10-01), Noguchi et al.
patent: 5057787 (1991-10-01), Arai et al.
patent: 5325317 (1994-06-01), Petersen et al.
patent: 5389896 (1995-02-01), Kobayashi
patent: 5424690 (1995-06-01), Ohno
patent: 5430765 (1995-07-01), Nagahori
patent: 5436594 (1995-07-01), Pace et al.
patent: 5463345 (1995-10-01), Nagahori et al.
patent: 5463349 (1995-10-01), Petersen et al.
patent: 5489904 (1996-02-01), Hadidi
patent: 5563916 (1996-10-01), Scarpa
patent: 5619169 (1997-04-01), Matsuura
patent: 5760635 (1998-06-01), Nayebi et al.
patent: 5917379 (1999-06-01), Ashby et al.
patent: 5920166 (1999-07-01), Schlager et al.
patent: 5999050 (1999-12-01), Baltus
patent: 6032109 (2000-02-01), Ritmiller, III
patent: 6049252 (2000-04-01), Iwata
patent: 6069866 (2000-05-01), Pietruszynski et al.
patent: 6078219 (2000-06-01), Hadjichristos et al.
patent: 6104226 (2000-08-01), Weber
patent: 6150885 (2000-11-01), Ashby et al.
patent: 6222418 (2001-04-01), Gopinathan et al.
patent: 6480066 (2002-11-01), Madni
patent: 6617888 (2003-09-01), Volk
patent: 6980054 (2005-12-01), Okada
patent: 2002/0039413 (2002-04-01), Siniscalchi et al.
patent: 0 600 852 (1994-06-01), None
patent: 2 140 994 (1984-12-01), None
patent: WO 01/35527 (2001-05-01), None
International Search Report issued for PCT/US 03/25115, dated Aug. 31, 2004. **
“Analog Integrated Circuit Design”, David A. Johns and Ken Martin, 1958, pp. 589, 598, 643 and 645.
“A 2.5-V Active Low-Pass Filter Using All-n-p-n Gilbert Cells with a 1-V p—p Linear Input Range”, Mikio Koyama, et al., IEEE Journal of Solid-State Circuits, vol. 28, No. 12, Dec. 1993, pp. 1246-1253.
“A Low Distortion Bipolar Mixer for Low Voltage Direct Up-Conversion and High IF Frequency Systems”, Farbod Behbahani, et al., Proceedings of the 1996 Bipolar/BiCMOS Circuits and Technology Meeting, 1996, pp. 50-52.
International Search Report Issued for PCT/US 03/25115, dated Jun. 21, 2004.
“Analog Integrated Circuit Design”, David A. Johns and Ken Martin, 1958, pp. 589, 598, 643 and 645.
“A 2.5-V Active Low-Pass Filter Using All-n-p-n Gilbert Cells with a 1-V p—p Linear Input Range”, Mikio Koyama, et al., IEEE Journal of Solid-State Circuits, vol. 28, No. 12, Dec. 1993, pp. 1246-1253.
“A Low Distortion Bipolar Mixer for Low Voltage Direct Up-Conversion and High IF Frequency Systems”, Farbod Behbahani, et al., Proceedings of the 1996 Bipolar/BiCMOS Circuits and Technology Meeting, 1996, pp. 50-52.
International Search Report Issued for PCT/US 03/25115, dated Jun. 21, 2004.

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