Harold Alden Wheeler
In 1925 Wheeler graduated from George Washington University with a Bachelor of Science degree in physics and was awarded the Ruggles Prize for excellence in Mathematics.During his education he worked part-time at the National Bureau of Standards' Radio Laboratory, then from 1922 onwards at Stevens Institute of Technology, with Prof. Louis Alan Hazeltine, after discovering that they had independently invented the Neutrodyne receiver.In 1924 he became Hazeltine Corporation's first employee, and in 1925 created the first radio receiver with a diode automatic volume control that maintained a constant sound level while tuning to broadcasts of differing strengths.He led the Hazeltine laboratory 1930–1939, and during this time received patents for 126 inventions on a wide range of work including circuits, test equipment, acoustics, antennas, transmission lines, methods of calculation for inductance of coils (included in all relevant textbooks since the mid-1930s), skin effect, coupled circuit theory, television scanning theory, and analysis and design of wide-band TV amplifiers.During World War II Wheeler led work on identification friend or foe (IFF) antennas for aircraft, surface vessels, submarines, and ground stations.