Carl Battjes: Difference between revisions

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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.


In 1971 he left the portable oscilloscope group and joined the IC design group within Tektronix.   
He invented the [[ft doubler|"f<sub>t</sub> doubler" amplifier topology]] that has a current gain of 2 even at the transit 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.   


==Tek Products==
==Tek Products==
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* "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]]
* ...
* ...
==Patents==
* [https://www.google.com/patents/US3258765  US Patent 3258765  Digital to analog converter] (Filed Jan 23, 1963 - granted Jun 28, 1966)
* [https://www.google.com/patents/US3633120  US Patent 3633120  Amplifier circuit] (Filed Sep 16, 1970 - granted Jan 4, 1972) - the famous "[[ft doubler|f<sub>t</sub> doubler]]" circuit
* [https://www.google.com/patents/US3868580  US Patent 3868580  Bootstrapped amplifier]
* [https://www.google.com/patents/US4039899  US Patent 4039899  Geometry and focus correction circuit] (Filed May 3, 1976 - granted Aug 2, 1977)
* [https://www.google.com/patents/US4236119  US Patent 4236119  Monolithic wideband amplifier] (Filed Sep 11, 1978 - granted Nov 25, 1980)
* [https://www.google.com/patents/US5140198  US Patent 5140198  Image canceling mixer circuit on an integrated circuit chip] (Filed Aug 30, 1989 - granted Aug 18, 1992)
* ...?


==Links==
==Links==