Douglas H. Ring
Encyclopedia
Douglas H. Ring was one of the Bell Labs
engineers that invented the cell phone
. The history of cellular phone technology began on December 11, 1947 with an internal memo written by Douglas H. Ring in which he proposed development of a cellular telephone system by AT&T.
Although Martin Cooper of Motorola
is considered the inventor of the first handheld cellular telephone and the first person to demonstrate to reporters a handheld cell phone call, Cooper's April 1973 call used cellular telephone technology invented and developed by Bell Labs engineers.
Bell Labs
Bell Laboratories is the research and development subsidiary of the French-owned Alcatel-Lucent and previously of the American Telephone & Telegraph Company , half-owned through its Western Electric manufacturing subsidiary.Bell Laboratories operates its...
engineers that invented the cell phone
Mobile phone
A mobile phone is a device which can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile network operator...
. The history of cellular phone technology began on December 11, 1947 with an internal memo written by Douglas H. Ring in which he proposed development of a cellular telephone system by AT&T.
Although Martin Cooper of Motorola
Motorola
Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois, which was eventually divided into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011, after losing $4.3 billion from 2007 to 2009...
is considered the inventor of the first handheld cellular telephone and the first person to demonstrate to reporters a handheld cell phone call, Cooper's April 1973 call used cellular telephone technology invented and developed by Bell Labs engineers.
See also
- History of mobile phonesHistory of mobile phonesThe history of mobile phones charts the development of devices which connect wirelessly to the public switched telephone network. The transmission of speech by radio has a long and varied history going back to Reginald Fessenden's invention and shore-to-ship demonstration of radio telephony,...
- W. Rae YoungW. Rae YoungWilliam Rae Young, Jr. was one of the Bell Labs engineers that invented the cell phone.The history of cellular phone technology began in December 1947 with a Bell Labs internal report in which Rae Young suggested the hexagonal cell concept for a cellular mobile telephone system.-Career:Young...
- Amos E. Joel, Jr.Amos E. Joel, Jr.Amos Edward Joel, Jr. was an American electrical engineer, known for several contributions and over seventy patents related to telecommunications switching systems....
Patents of Douglas H. Ring
-- Volume Control Circuits", filed May 26, 1934 -- Oscillation Generator, filed Apr 22, 1938 -- Multiple Unit Steerable Antenna System, filed July 14, 1939 -- Frequency Adjustment of Resonant Cavities, filed Sep 3, 1941 -- Microwave Coupling System, filed Mar 26, 1942 -- Microwave Transmission System, filed Dec 23, 1942 -- Guided Wave Frequency Range, filed Dec 30, 1948 -- Reduction of Phase Distortion, filed Aug 20, 1949 -- Microwave Frequency Structure Using Hybrid Junctions, filed Mar 6, 1951 -- Reduction of Phase Distortion, filed Sep 21, 1951 -- Frequency Stabilized Oscillator", filed Oct 1, 1953 -- High Speed Microwave Switching Networks, filed May 31, 1960External links
- 1947 memo by Douglas H. Ring proposing hexagonal cells
- AT&T article on mobile and cellular phone history
- The history of cellular telephones
Further reading
- Brodsky, Ira. "The History of Wireless: How Creative Minds Produced Technology for the Masses" (Telescope Books, 2008)