叶楷

叶楷 Chai Yeh (1911.9.21－1997.2.15)
　　浙江杭州人。1931年毕业于浙江大学电机工程系，1933年留美，1934年和1936年先后在美国哈佛大学获电机工程硕士和应冈物理学博士学位。曾任北洋大学、清华大学教授。抗战时任清华大学无线电研究所教授、西南联大电机工程系教授(1937一1946)、系主任(1945—1946)。1947年赴美，先在堪萨斯大学任访问教授(1948—1956)，1956年到Michigan大学，在WillowRun实验室担任实验工程师，并在电机工程系任讲师(1956一1961)、副教授(1961—1964)、教授(1964一1981)，)981年退休，被授予电机工程和计算机科学系名誉教授。
　　叶楷是一位应用物理学家。早在1931—33年，他就曾在德国柏林的德律风根实验室和西门子中心实验室作见习工程师。在美国期间，除在WillowRun实验室外，还先后在哈佛大学的电子研究实验室、威斯汀豪斯研究实验室、贝尔电话实验室、RCADavid Sarnoff研究中心等任实验工程师。在电子学、微波、线性和非线性电路分析等方面，都进行了卓有成效的研究。1945年，他从理论上考察了栅极支柱和不同电子管尺寸对电子发射角的影响，从而证明了H.C.Thompson在1936年的实验分析。1950年，他在对低压充气二极管的理论与实验研究中，推出了一些重要数据，如正离子的过渡时间和寿命，以及它中和空间电荷的效应等。
　　夫人姜淑雁女士为姜立夫侄女，为浙大数学系校友。

Chai Yeh, professor emeritus of electrical and computer engineering, died Feb. 15 in Davis, Calif. He was 85.
A pioneering researcher in the fields of photonics, fiber optics and solid-state electronics, Yeh was a member of the faculty for 20 years.
Yeh came to Ann Arbor in 1956 as a research engineer at Willow Run Laboratories. In 1961, he joined the faculty as an associate professor of electrical engineering and was promoted to professor in 1964.
During his long and productive career, Yeh published more than 100 papers in scholarly journals and symposium proceedings on radioelectronics, microwave electronics, solid-state electronics and opto-electronics. After his retirement in 1981, Yeh published two books, Handbook on Fiber Optics (1990) and Applied Photonics (1994).
Before joining the U-M, Yeh was a visiting professor at the University of Kansas in 1948-1956. He was a research engineer at theRadio Research Institute and professor at the Southwestern Associated University in Kunming, China, in 1936-1945 and a professor at Tsinghua University in Peking, China, in 1945-1947. A native of China, he received his B.S. in electrical engineering from Chekiang University in 1932, his M.S. in 1934 and his D.Sc. in 1936 from Harvard University.
Yeh was a member of the first Distinguished Chinese-American Scholars Delegation to visit China in 1972 and returned many times to serve as an adviser to Tsinghua University and Chekiang University.He was appointed an honorary professor of the Shanghai University of Science and Technology in 1980.
He was a member of several professional and honorary societies,including the Institute of Electrical and Electronics Engineering,Tau Beta Pi, Eta Kappa Nu and Sigma Xi.
Yeh is survived by his wife, Ida, of Davis, Calif.; two sons and their wives, Yin and Elizabeth Tang Yeh of Davis, Calif., and Jen and Susan Fillin-Yeh of Portland, Ore.; a sister, Jing Guo Yeh of Ann Arbor; three granddaughters, two great-grandchildren and one nephew.

http://www.ur.umich.edu/9697/Mar11_97/obit.htm