Abstract :
Karl Kupfmuller (1897-1977) was a German engineer who began his professional career in the comparatively young telecommunications sector just after the First World War. During the 1920s, he worked for eight years at Siemens & Halske in Berlin. From 1928 onward, he held academic posts in electrical engineering, culminating as the chair of telecommunications in Darmstadt until 1963. While employed at Siemens & Halske, Kupfmuller carried out fundamental work on telegraphy and telephony, network theory, and electrical signal transmission. Like his U.S. contemporary Harry Nyquist, Kupfmuller derived fundamental results in information transmission and closed-loop modeling, including a stability criterion.
Keywords :
circuit theory; closed loop systems; linear systems; stability criteria; telegraphy; telephony; closed-loop modeling; electrical signal transmission; information transmission; linear system; network theory; stability criterion; telegraphy; telephony; Control systems; Convolution; Electrical engineering; Engineering profession; Feedback loop; Frequency response; Linear systems; Nonlinear filters; Stability criteria; Time domain analysis;
