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|Wikidata id= | |Wikidata id= | ||
}} was a Tektronix engineer. | }} was a Tektronix engineer. | ||
In 1950 he joined the U.S. Air Force and trained as a fighter pilot flying F-84s. | In 1950 he joined the U.S. Air Force and trained as a fighter pilot flying [[wikipedia:Republic F-84 Thunderjet|F-84s]]. | ||
In 1958 he graduated from the University of Michigan with a bachelor's degree in electrical engineering, then moved to Silicon Valley where he worked at Sylvania while completing his master's in electrical engineering from Stanford in 1960<ref>[https://obits.oregonlive.com/us/obituaries/oregon/name/carl-battjes-obituary?id=19269082 Carl Battjes Obituary] @ OregonLive</ref>. | In 1958 he graduated from the University of Michigan with a bachelor's degree in electrical engineering, then moved to Silicon Valley where he worked at Sylvania while completing his master's in electrical engineering from Stanford in 1960<ref>[https://obits.oregonlive.com/us/obituaries/oregon/name/carl-battjes-obituary?id=19269082 Carl Battjes Obituary] @ OregonLive</ref>. | ||
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Battjes had designed a 300 MHz transistor amplifier at [[Sylvania]] before he joined Tektronix in 1961 to work on high-speed amplifiers. | Battjes had designed a 300 MHz transistor amplifier at [[Sylvania]] before he joined Tektronix in 1961 to work on high-speed amplifiers. | ||
He invented the [[ft doubler|"f<sub>t</sub> doubler" amplifier topology]] that has a current gain of 2 even at the | He invented the [[ft doubler|"f<sub>t</sub> doubler" amplifier topology]] that has a current gain of 2 even at the transition frequency of the transistors that are used in the circuit. | ||
In 1971, Battjes left the portable oscilloscope group and joined the IC design group within Tektronix. | In 1971, Battjes left the portable oscilloscope group and joined the IC design group within Tektronix. | ||
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From ''Who Wakes the Bugler?'' (s.b.): | From ''Who Wakes the Bugler?'' (s.b.): | ||
<blockquote> | <blockquote> | ||
While on a camping trip in Oregon in 1961, I stopped at | While on a camping trip in Oregon in 1961, | ||
I stopped at Tektronix and received an interview and a job offer the same day. Tektronix wanted me. | |||
They were at a stage where they needed to exploit transistors to build fast, high-performance 'scopes. | They were at a stage where they needed to exploit transistors to build fast, high-performance 'scopes. | ||
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So I arrived at this premier oscilloscope company feeling somewhat of a fraud. | So I arrived at this premier oscilloscope company feeling somewhat of a fraud. | ||
I was more than just a bit intimidated by the Tektronix reputation and the distributed amplifiers and artificial delay lines and all that stuff that really worked. | I was more than just a bit intimidated by the Tektronix reputation and | ||
The voltage dynamic range, the transient response cleanliness, and DC response requirements for a vertical output amplifier made my low-power, 50 Ohm, 300 MHz IF amplifier seem like child's play. | the distributed amplifiers and artificial delay lines and all that stuff that really worked. | ||
The voltage dynamic range, the transient response cleanliness, | |||
and DC response requirements for a vertical output amplifier made my low-power, | |||
50 Ohm, 300 MHz IF amplifier seem like child's play. | |||
Naturally, I was thrown immediately into the job of designing high-bandwidth oscilloscope transistor vertical-output amplifiers. | Naturally, I was thrown immediately into the job of designing high-bandwidth oscilloscope transistor vertical-output amplifiers. | ||
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[https://vintagetek.org/years-at-tektronix-hofer/ According to Bruce Hofer], | [https://vintagetek.org/years-at-tektronix-hofer/ According to Bruce Hofer], | ||
<blockquote> | <blockquote> | ||
It was also around this time that I was asked to take over the instructor responsibilities of “AFTR”, Amplifier Frequency and Transient Response, an in-house course developed by Carl Battjes. I wasn’t sure I was up to the challenge, but soon became comfortable in this new role. AFTR was a virtual pre-requisite among analog designers. Carl’s focus had been solely on vertical amplifiers, so I added a lot of new material related to the design of other types of amplifiers. I ended up teaching the course for 7 years. Some years later when Carl became terminally ill, he begged me to “write the book” for him. Alas, I did not have the time, having moved on into a very different design realm. | It was also around this time that I was asked to take over the instructor responsibilities of “AFTR”, | ||
Amplifier Frequency and Transient Response, an in-house course developed by Carl Battjes. | |||
I wasn’t sure I was up to the challenge, but soon became comfortable in this new role. | |||
AFTR was a virtual pre-requisite among analog designers. | |||
Carl’s focus had been solely on vertical amplifiers, | |||
so I added a lot of new material related to the design of other types of amplifiers. | |||
I ended up teaching the course for 7 years. | |||
Some years later when Carl became terminally ill, he begged me to “write the book” for him. | |||
Alas, I did not have the time, having moved on into a very different design realm. | |||
</blockquote> | </blockquote> | ||
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* "Who Wakes the Bugler?", in ''The Art and Science of Analog Circuit Design'', Jim Williams (Ed.), July 1998. ISBN 978-0-7506-7062-3. → [https://books.google.at/books?id=SPwqg7qpFWUC&pg=PR7 Google Books] | * "Who Wakes the Bugler?", in ''The Art and Science of Analog Circuit Design'', Jim Williams (Ed.), July 1998. ISBN 978-0-7506-7062-3. → [https://books.google.at/books?id=SPwqg7qpFWUC&pg=PR7 Google Books] | ||
* "Short Pulse Technique of Adjusting Wideband Amplifiers", in [[Media:Tekscope 1971 V3 N1 Jan 1971.pdf|Tekscope Vol. 3 No. 1 January 1971]] | * "Short Pulse Technique of Adjusting Wideband Amplifiers", in [[Media:Tekscope 1971 V3 N1 Jan 1971.pdf|Tekscope Vol. 3 No. 1 January 1971]] | ||
{{Documents|Author=Carl Battjes}} | |||
==References== | ==References== |