Cell Phone History

Topics: Mobile phone, GSM, Cellular network Pages: 3 (994 words) Published: December 28, 2010
The early years of 20th century saw the first attempts at wireless and mobile telephony, In 1908, U.S. patent 887,357 for a wireless telephone was issued to Nathan B. Stubblefield of Murray, Kentucky. He applied this patent to cave radio telephones and not directly to cellular telephony as the term is currently understood. Two years later Lars Magnus Ericsson installed a telephone in his car. While travelling across the country we would stop at a place where telephone lines were accessible and using a pair of long electric wires he could connect to the national telephone network. In Europ radio telephone was the first used on the first-class passenger trains between Berlin and Hamburg in 1926. At the same time, radio telephony was introduced on a passenger airlplanes for air traffic security. It was also introduced on a large scale in German tanks during the Second World War. The in early 1950’s ships on the rhine were among the first to used the radio telephony with an untrained end customer as a user. It was the 1940’s onwards that saw the seed of the technological development which would enventually produced the mobile phone. Motorola developed backpacked two-way radio, the Walkie-Talkie and a large hand-held-two way radio for the US military. This battery powered “Handie-Talkie was about the size of a man’s forearm. In December 1947, Douglas H. ring and W. Rae Young, Bell Labs engineers proposed hexagonal cells for the mobile phones in the vehicles. Philip To Porter also of Bell Labs, proposed that the cell Towers be at the corners of the hexagons rather than the centers and have directional antennas that would transmit/receive. During the 1950’s the expirement of the pioneers started to appear as usable services across society, both commercially and culturally. In 1969, a patent for a wireless phone using an acoustic coupler for incoming calls was issued in US patent. In December 1971, AT&T submitted a proposal for a cellular service to the Federal...
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