ROBERT SNEDECOR RINGLAND
Vacuum tube developer
Life Senior Member, 100; died 9 March
During Robert S. Ringland’s 40-plus-year career, he designed and developed vacuum tubes, primarily for military radar applications.
Ringland began designing the tubes for the Radio Corporation of America at its facilities in Harrison and Verona, N.J. He left RCA in 1940 to design the devices for General Electric, first in Schenectady, N.Y., and later in Pennsylvania and Massachusetts.
Following a 24-year career with GE, he moved to Burlington, Iowa, where he was chief engineer for Antennacraft Corp. He retired in 1983, returned in 1985 as a technical director, and retired for good in 1988.
Ringland received a bachelor’s degree in economics in 1932 from Princeton University.
HUNG C. “JIMMY” LIN
Inventor, EE professor
Life Fellow, 89; died 5 March
Jimmy Lin was an accomplished inventor of electronic circuit components and an educator for more than two decades at the University of Maryland, College Park.
He began his career in 1941 as an engineer for various Chinese radio broadcasting companies. He moved to the United States in 1947 and became a research engineer for broadcasting companies including RCA and CBS. While at Westinghouse, he developed the lateral transistor used in most linear and digital ICs and active noise cancellation circuits that can be found today in headphones and other devices.
Lin’s career shifted to academia in 1969, when he joined the University of Maryland as a professor of electrical engineering. He taught there for 21 years, retiring in 1990 but continuing to mentor students for several years after.
Lin, who received the 1978 IEEE J.J. Ebers Award, authored Integrated Electronics [Holden Day, 1967]. He was a member of several IEEE societies including Circuits and Systems; Ultrasonics, Ferroelectrics, and Frequency Control; and Consumer Electronics.
He received a bachelor’s degree in 1941 from National Chiao Tung University, in Shanghai; a master’s degree in 1948 from the University of Michigan, Ann Arbor; and a doctorate in 1956 from the Polytechnic Institute of Brooklyn, N.Y. (now part of New York University), all in electrical engineering.
HUGO LOGEMANN JR.
Radar systems designer
Life Fellow, 89; died 2 December
Hugo Logemann Jr. devoted most of his career to designing radar systems.
He began during World War II at the MIT Radiation Lab, in Cambridge, Mass., from 1942 to 1945. Next, he joined a team of engineers from the University of Rochester, N.Y., that built a cyclotron to study subatomic particles. He left after several years, joining the MIT Lincoln Laboratory, in Lexington, Mass., where he focused on developing radar systems for the U.S. Department of Defense.
In 1956 he began working at the Radio Corporation of America laboratories in Burlington, Mass., where he tackled radar-related projects until he retired in 1971.
Logemann, who received the 2001 IEEE Instrumentation and Measurement Society Award, earned a bachelor’s degree in electrical engineering in 1942 from the University of Wisconsin, Madison.
The following person was not an IEEE member, but he made important contributions to IEEE's fields of interest.
IRVING JOHN “JACK” GOOD
Mathematician and wartime cryptographer
92; died 5 April
Jack Good broke codes for British military intelligence and became a professor of statistics at Virginia Polytechnic Institute and State University.
He started out as a statistician for the Government Code and Cipher School in Bletchley Park, Buckinghamshire, England, the British WWII decryption center. He deciphered German military and naval radio traffic from 1941 to 1945, and spent the next three years as a lecturer in mathematics and electronic computing at the University of Manchester, England.
Then he got back to codebreaking, developing machines—predecessors of the modern computer—that the British military used to decipher messages. Good worked on classified projects for the Government Communications Headquarters from 1948 to 1959, and for another three years at the Admiralty Research Laboratory, in London.
He returned to academia, first for three years as a senior research Fellow at Trinity College, Oxford. In 1967 he joined Virginia Tech, in Blacksburg, as a professor of statistics and remained there until he retired in 1994.
Good received a bachelor’s degree in 1938 and a Ph.D. in 1941, both from Cambridge, in mathematics. He also earned a master’s in 1943 and doctoral degree in 1963 from Cambridge, and a third doctorate in 1964 from Oxford.