Patent US 4146844A: Difference between revisions
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[[File:Pat 4146844.jpg|thumb|400px|right|Technology Review Oct 1979 article on the Cascomp amplifier]] | |||
{{Patent | {{Patent | ||
|Office=US | |Office=US | ||
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|Filing date=1977-10-31 | |Filing date=1977-10-31 | ||
|Grant date=1979-03-27 | |Grant date=1979-03-27 | ||
|Links=Cascomp;2465; | |||
}} | }} | ||
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.107+ | |||
According to Addis, | |||
<blockquote>''[the circuit] was used extensively in the [[2465]] to reduce the power requirements by increasing linearity for a given standing current''. | |||
</blockquote> | |||
==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 | |||
* [[Patent US 4322688A|K.Schlotzhauer and A. Metz, ''Cascode feed-forward amplifier'', U.S. Patent 4 322 688]] | |||
* [[Patent US 4528517A|K.Schlotzhauer, ''Overdrive thermal distortion compensation for a Quinn cascomp amplifier'', U.S. Patent 4 528 517]] | |||
* [https://researchcommons.waikato.ac.nz/handle/10289/7204 H. Jull, T. Balsom, J. Scott, ''Cascomp BJT Amplifier vs. traditional configurations]'' (2012) | |||
* Re-issue: [[Patent US RE31545E]] | |||
{{Documents|Link=Cascomp}} | |||
Latest revision as of 04:33, 15 July 2024
| Patent number | US 4146844A (click link for details and documents via Google Patents) |
|---|---|
| Title | Feed-forward amplifier |
| Inventors | Pat Quinn |
| Company | Tektronix Inc |
| Filing date | 1977-10-31 |
| Grant date | 1979-03-27 |
Cited By:
| Patent | Title | Inventors | Assignee | Granted |
|---|---|---|---|---|
| Patent EP 0110614 | Current-limiting mechanism for a precision differential amplifier | Art Metz • Ken Schlotzhauer | Tektronix Inc | 1987-01-14 |
| Patent US 4322688A | Cascode feed-forward amplifier | Ken Schlotzhauer • Art Metz | Tektronix Inc | 1982-03-30 |
| Patent US 4528517A | Overdrive thermal distortion compensation for a Quinn cascomp amplifier | Ken Schlotzhauer | Tektronix Inc | 1985-07-09 |
Related products:
| Manufacturer | Model | Description | Introduced | Designers |
|---|---|---|---|---|
| Tektronix | 2465 | Portable 150/300 MHz 4-ch scope | 1984 | Art Metz • Ken Schlotzhauer • Walt Ainsworth • Wink Gross • Mike Metcalf • Marv LaVoie |
Documents referencing Patent US 4146844A:
| Document | Title | Authors | Year | Links |
|---|---|---|---|---|
| Technology Report October 1979.pdf | Patent Received: 4,146,844 Feed-Forward Amplifier | Pat Quinn | 1979 | Cascomp • Patent US 4146844A |
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.107+
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 October 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 |