Patent US 4146844A

Patent number	US 4146844A
Title	Feed-forward amplifier
Inventors	Pat Quinn
Company	Tektronix Inc
Filing date	1977-10-31
Grant date	1979-03-27
Cites

Technology Review Oct 1979 article on the Cascomp amplifier

This patent describes the so-called "cascomp" amplifier − see John Addis, Good Engineering and Fast Vertical Amplifiers, in Jim Williams (Ed.), Analog Circuit Design: Art, Science and Personalities (1991), p.117.

According to Addis,

[the circuit] was used extensively in the 2465 to reduce the power requirements by increasing linearity for a given standing current.

See also

• P. A. Quinn, A cascode amplifier nonlinearity correction technique', in IEEE Int. Solid-State Circuits Conference., New York, NY, 1981, pp. 188-272.
• S. Simpkins and W. Gross, Cascomp feedforward error correction in high speed amplifier design, in IEEE J. Solid-State Circuits Conference., vol. sc-18, no. 6 pp. 762-764, Dec. 1983
• K.Schlotzhauer and A. Metz, Cascode feed-forward amplifier, U.S. Patent 4 322 688
• K.Schlotzhauer, Overdrive thermal distortion compensation for a Quinn cascomp amplifier, U.S. Patent 4 528 517
• H. Jull, T. Balsom, J. Scott, Cascomp BJT Amplifier vs. traditional configurations (2012)
• Re-issue: Patent US RE31545E

Documents Referencing Cascomp

Document	Class	Title	Authors	Year	Links
Technology report oct 1979.pdf	Article	Patent Received: 4,146,844 Feed-Forward Amplifier	Pat Quinn	1979	Cascomp • Patent US 4146844A
Electronic-Engineering-Aug-Sept-1988-Versatile-Analogue-Chip-John-Addis.pdf	Article	Versatile Analogue Chip for Oscilloscope Plug-ins	John Addis	1988	M377 • 11A32 • 11A33 • 11A34 • 11A52 • Cascomp • Overdrive • Thermals • Gilbert multiplier • Pat Quinn • Gary Polhemus • Art Metz