Amos E. Joel, Jr.

Amos Edward Joel Junior ( born March 12, 1918 in Philadelphia, † October 25, 2008 in Maplewood, New Jersey ) was an American electrical engineer.

Joel built as a teenager his first telephone networks. He went to school in the Bronx and studied electrical engineering at the Massachusetts Institute of Technology with a bachelor's degree in 1940 and a master's degree in 1942., Where he worked on analog computers ( Differential Analyzer ) of Vannevar Bush and was awarded his doctorate at Samuel H. Caldwell. From 1940 until his retirement in 1983, he worked at Bell Laboratories. Initially, he worked with Claude Shannon in cryptographic studies and machine during the Second World War. He conducted at Bell Labs in the 1960s, the development of electronic switching systems for telephone networks. The result was the development of the Number One Electronic Switching System ( 1ESS ), introduced in 1965, and the Traffic Service Position System ( TSPS ), introduced in 1969.

He was also a pioneer of the mobile phone: a patent of it from 1972 enabled the continuous calls when changing the radio cell.

In 1976 he received the IEEE Alexander Graham Bell Medal, the IEEE Medal of Honor in 1992 and 1989, the Kyoto Prize. He was a Fellow of the National Academy of Engineering ( 1981) and the IEEE. In 1993 he received the National Medal of Technology and in 1981 the Stuart Ballantine Medal of the Franklin Institute.