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Topics: Antenna (astronomy) Ngc 4038 4039 Light-years Colliding...

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AntennaIn biology, antenna (plural: antennae refers to the sensing organs of several arthropods. In electronics, antenna (plural: antennas refers to the component designed to send and receive radio waves. Antenna, also known as ANT1, is a Greek-language terrestr Antenna blind coneIn telecommunication, antenna blind cone (sometimes called a cone of silence is the volume of space, usually approximately conical with its vertex at the antenna, that cannot be scanned by an antenna because of limitations of the antenna radiation pattern Antenna effective areaIn telecommunication, antenna effective area is the functionally equivalent area from which an antenna directed toward the source of the received signal gathers or absorbs the energy of an incident electromagnetic wave. Note 1 Antenna effective area is us Antenna height above average terrainIn telecommunication, antenna height above average terrain is the antenna height above the average terrain elevations from 3. 2 to 16 kilometers (2 to 10 miles) from the antenna for the eight directions spaced evenly for each 45° of azimuth starting with Antenna noise temperatureIn telecommunication, antenna noise temperature is the temperature of a hypothetical resistor at the input of an ideal noise-free receiver that would generate the same output noise power per unit bandwidth as that at the antenna output at a specified freq Antenna gainAntenna gain is the measurement of an antennas ability to amplify the incoming microwave signals in a particular direction, compared with the sensitivity of an isotropic antenna in any direction, or a dipole antenna in the equatorial direction. The two me Antenna (biology) Antenna (radio) Antenna (album) Antenna tuner Antennaria alpina Antennaria dioica Antenna analyzer Antenna (astronomy) Antennae (astronomy)