Karl Willy Wagner (22 February 1883 – 4 September 1953) was a German pioneer in the theory of electronic filters. He is noted by Hendrik Bode as being one of two Germans whose;Bode, H W, Network Analysis and Feedback Amplifier Design, Robert E Krieger Publishing, 1975.
The other German being referred to is Wilhelm Cauer. Wagner was the second referee on Cauer's milestone 1926 thesisCauer, W, "Die Verwirklichung der Wechselstromwiderstände vorgeschriebener Frequenzabhängigkeit" ("The realisation of impedances of specified frequency dependence"), Archiv für Elektrotechnic, vol 17, pp355-388, 1926. but Wagner fell out with Cauer in 1942 after he refused to support Wagner's research proposals with the German Society of Electrical Engineers (Verband der Elektrotechnik - the VDE).E. Cauer, W. Mathis, and R. Pauli, "Life and Work of Wilhelm Cauer (1900–1945)", Proceedings of the Fourteenth International Symposium of Mathematical Theory of Networks and Systems (MTNS2000), Perpignan, June, 2000. Retrieved online 19 September 2008.
Wagner was removed from office in 1936 because he refused to dismiss his Jewish employees.
See also Analogue filter Maxwell–Wagner–Sillars polarization
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