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Encyclopedia > Antennas



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Antenna - Partstrain.com (464 words)
It is physically an array of conductors intended to transmit an electromagnetic field as a response to an applied alternating voltage as well as the alternating electric current associated with it.
On the other hand, antennas can also be situated into an electromagnetic field in order for the field to bring on an alternating current in the antenna and a voltage right between its terminals.
The length of the antenna, as well as the materials from which they are made of really bring a big difference in the quality of reception that the car stereo receives.
Antenna (radio) - Wikipedia, the free encyclopedia (3233 words)
Complex impedance of an antenna is related to the electrical length of the antenna at the wavelength in use.
The (large) loop antenna is similar to a dipole, except that the ends of the dipole are connected to form a circle, triangle (delta loop antenna) or square.
The Phased array antenna is a group of independently fed active elements in which the relative phases of the respective signals feeding the elements are varied in such a way that the effective radiation pattern of the array is reinforced in a desired direction and suppressed in undesired directions.
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