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Joel S. Engel (February 4, 1936) is an American engineer, known for fundamental contributions to the development of cellular networks.

Born in New York City, he obtained a B.Sc. in engineering at City College of New York (1957). While working at the Massachusetts Institute of Technology in the research staff at Draper Laboratory on satellite imaging, he also obtained an M.Sc. in electrical engineering (1959). He then moved to New Jersey and worked for Bell Labs most of his active research career (1959-83), and also earned a Ph.D. from Polytechnic Institute of Brooklyn on a thesis on transmission lines (1964).

He then worked at Bellcomm on guidance systems for the Apollo Program (1965) and at the Page Communications Engineers, Inc. in Washington, D.C. (1965-67) before returning to Bell Labs where he joined the mobile phone system research group. After the Federal Communications Commission (FCC) opened up new frequencies (1968), his engineering team developed a specification for cellular network and its parametrization (1971), which was laid on the ground for Advanced Mobile Phone System, eventually commercialized (1983).[1]

Engel was the first person to be called on a cellular mobile phone by Dr. Martin Cooper on April 3, 1973 when Cooper demonstrated for reporters the prototype hand-held mobile phone invented by Cooper and his staff at Motorola.

After a short stay at AT&T (1973-75), Engel worked at Bell Labs on residential information services such as videotex. He also lectured at Polytechnic Institute of Brooklyn.

He then worked hard as VP of engineering at Satellite Business Systems (1983-86), as president of research and development at MCI Communications (1986-87), as VP of technology at Ameritech (1987-97), and as president of JSE Consulting of Armonk, New York.

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