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The radar is used in many contexts: in meteorology, for air traffic control, for monitoring road traffic, by the military, astronautics, etc. The word itself is a neologism derived from the acronym English: RAdio Detection AN / Ranging, which can result in “detection and estimation of distance using radio waves,” Detection and Ranging Radio “or [...]

In radio electricity, an antenna is a device used to radiate (transmitter) or capture (receiver), the electromagnetic waves. The antenna is a key element in a radio system, and its performance characteristics, gain, radiation pattern directly influence the performance of quality and scope of the system. Very generally, a radio antenna converts electrical quantities in [...]