Microwave technology has been used extensively by the broadcast and cable television industries, as well as in other telecommunications applications, since the early 1950s. Today, microwaves are employed by telecommunications industries in the form of both terrestrial relays and satellite communications.
Microwaves are a form of electromagnetic radiation with frequencies ranging from several hundred MHz to several hundred GHz and wavelengths ranging from approximately 1 to 20 centimeters. Because of their high frequencies, microwaves have the advantage of being able to carry more information than ordinary radio waves and are capable of being beamed directly from one point to another. In addition to their telecommunications applications (which include telephony and computer networking, as well as television), microwaves are used in cooking, police radar, and certain military applications.
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