Antenna array & Loop antenna - Unionpedia, the concept map

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Difference between Antenna array and Loop antenna

Antenna array vs. Loop antenna

An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor, that for transmitting is usually fed by a balanced power source or for receiving feeds a balanced load.

Antenna (radio)

In radio engineering, an antenna (American English) or aerial (British English) is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.

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Antenna feed

A radio transmitter or receiver is connected to an antenna which emits or receives the radio waves.

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Dipole antenna

In radio and telecommunications a dipole antenna or doublet is one of the two simplest and most widely-used types of antenna; the other is the monopole.

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Direction finding

Direction finding (DF), or radio direction finding (RDF), is the use of radio waves to determine the direction to a radio source.

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Directivity

In electromagnetics, directivity is a parameter of an antenna or optical system which measures the degree to which the radiation emitted is concentrated in a single direction.

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Driven and parasitic elements

In an antenna array made of multiple conductive elements (typically metal rods), a driven element or active element (also called driven radiator or active radiator) is electrically connected to the receiver or transmitter while a parasitic element (or passive radiator) is not.

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Electromagnetic interference

Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction.

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Gain (antenna)

In electromagnetics, an antenna's gain is a key performance parameter which combines the antenna's directivity and radiation efficiency.

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High frequency

High frequency (HF) is the ITU designation for the band of radio waves with frequency between 3 and 30 megahertz (MHz).

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Land mobile radio system

A land mobile radio system (LMRS) is a person-to-person voice communication system consisting of two-way radio transceivers (an audio transmitter and receiver in one unit) which can be stationary (base station units), mobile (installed in vehicles), or portable (handheld transceivers e.g. "walkie-talkies").

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Monopole antenna

A monopole antenna is a class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane.

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Null (radio)

In radio electronics, a null is a direction in an antenna's radiation pattern where the antenna radiates almost no radio waves, so the far field signal strength is a local minimum.

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Quad antenna

A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands.

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Radiation pattern

In the field of antenna design the term radiation pattern (or antenna pattern or far-field pattern) refers to the directional (angular) dependence of the strength of the radio waves from the antenna or other source.

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Radio wave

Radio waves are a type of electromagnetic radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically with frequencies below 300 gigahertz (GHz) and wavelengths greater than, about the diameter of a grain of rice.

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Very high frequency

Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter.

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Yagi–Uda antenna

A Yagi–Uda antenna, or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these elements are most often metal rods (or discs) acting as half-wave dipoles.

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