Ground skimming output stage

Details Ground skimming output stage Ground skimming output stage

2011-03-01

2011-03-01

Shingleton, Michael B (Department: 2815)

Amplifiers

With semiconductor amplifying device

Including d.c. feedback bias control for stabilization

C330S296000, C330S297000, C327S574000, C381S120000

Reexamination Certificate

active

07898336

ABSTRACT:
Ground skimming output stages that are designed to drive wideband signals with the ability to provide a high quality output signal all the way to the low supply rail are provided. In accordance with an embodiment of the present invention, the output stage of the present invention includes a translinear current controller, an output transistor and a current mirror. While not limited thereto, embodiments of the present invention only require a single positive power supply, consistent with the recent trend toward integrated circuits that only require a single low voltage power supply.

REFERENCES:
patent: 5451903 (1995-09-01), Armstrong
patent: 6434243 (2002-08-01), Read
Todd, “FET's as Voltage-Variable,” Application Note, vol. 113, No. 19, Sep. 13, 1965, pp. 66-68.
Fei, L., “Translinear Circuits Tackle RF Signals,” Penton Media, Inc., http://www.mwrf.com/Articles/ArticleID/21231/21231.html, pp. 1-4, May 2009.
Gilbert, B., “Translinear Circuits: A Proposed Classification,” Analog Devices, Inc., pp. 14-16, Dec. 9, 1974.
Vargas-Bernal, R., “Identifying Translinear Loops in the Circuit Topology,” IEEE, 4 pages, May 2000.
“Translinear Circuit;” Wikipedia, http://en.wikipedia.org/wiki/Translinear—circuit, accesses Oct. 12, 2010.
Seevinick, E., “Generalized Translinear Circuit Principle,” IEEE, vol. 26, No. 8, Aug. 1991.
“Translinear Circuits,” Wiley Encyclopedia of Electrical and Electronics Engineering, J. Webster (ed.), John Wiley & Sons, Inc., 1999.

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