For Antenna we have terms and definitions in 13 topics. The topics are Car Audio, Cell Phone, Cellular, Ecology, Entomological, Explosives, GPS, Ham Radio, Import Cars, Insect, MRI, Networking and Planetary Science.

Antenna (Car Audio)

The rod that is used to receive radio waves in a car. (e.g., My radio can’t pick up too much without the antenna all the way up.)

Antenna (Cell Phone)

An antenna is a device used for transmitting, sending and receiving radio signals.

Antenna (Cellular)

A wire or set of wires used to send and receive radio waves.

Antenna (Ecology)

(more than one = antennae) Main sense organ on insects, crustaceans, and some other animals. Antennae are used to collect information from the environment, including the location of food sources and possible dangers.

Antenna (Entomological)

(pl., antennae). Pair of segmented appendages located on the head and usually sensory in function - the 'feelers'.

Antenna (Explosives)

Antenna or aerial, a system of wires or other conductors used to transmit or receive radio or other electromagnetic waves ( Radio; Television). In a transmitting antenna, the signal from an Electrical Circuit causes electrons in the antenna to oscillate; these moving electric charges generate Electromagnetic Radiation, which is then transmitted through space. The distribution pattern of the transmitted wave depends on the design of the antenna; radio broadcast-station antennas are frequently designed to emit waves in all directions, whereas those used for Radar and for certain communication systems focus the waves in a single direction. In a receiving antenna, electromagnetic waves cause the electrons in the antenna to oscillate, inducing a signal that can be detected by an electric circuit. In general, a longer antenna is used to transmit or receive signals of longer wavelengths. Theoretically, the same antenna can be used both for sending and for receiving signals, but in practice, transmitting antennas are constructed to handle higher power loads than receiving antennas.

Antenna (GPS)

That part of the GPS receiver hardware which receives (and sometimes amplifies) the incoming L-Band signal. Antennas come in all shapes and sizes, but most these days use so-called "microstrip" or "patch" antenna elements. The geodetic antennas, on the other hand, may use a "choke-ring" to mitigate any multipath signals.

Antenna (Ham Radio)

A device that intercepts or radiates radio frequency energy.

Antenna (Import Cars)

A wire or other conductive metallic structure used for radiating or receiving electromagnetic signals, such as those for radio, television, or radar.

Antenna (Insect)

(pl., antennae). Pair of segmented appendages located on the head and usually sensory in function - the 'feelers'.

Antenna (MRI)

A device that enables the sending and/or receiving of electromagnetic waves. See also Transmitter, Receiver Coils and Surface Coils.

Antenna (Networking)

An antenna acts as a radiator that propagates a radio frequency signal from a wireless device through the air. An antenna also works in reverse by capturing signals from the air.

Antenna (Planetary Science)

A conductor by which electromagnetic waves are transmitted or received.

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