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Definition of "Isotropic Radiator" |
An isotropic radiator is a transducer that produces useful electromagnetic field output in all directions with equal intensity, and at 100-percent efficiency, in three-dimensional space. If used for signal reception, the device is equally sensitive in all directions. In wireless communications and broadcasting, the isotropic radiator also called an isotropic antenna is a theoretical ideal. It is sometimes referred to as a point source . / Frequency hopping-CDMA is one of two basic modulation techniques used in spread spectrum signal transmission. It is the repeated switching of frequencies during radio transmission, often to minimize the effectiveness of "electronic warfare"- that is, the unauthorized interception or jamming of telecommunication. It also is known as frequency- hopping code division multiple access. |
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