parabolična antena

parabolična antena

The most frequently found satellite TV antenna, it takes its name from the shape of the dish described mathematically as a parabola. The function of the parabolic shape is to focus the weak microwave signal hitting the surface of the dish into a single focal point in front of the dish. It is at this point that the feedhorn is usually located.

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Industry/Domain: Aerospace
Category: Satellites
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antena

Astronomy; Planetary science

A conductor by which electromagnetic waves are transmitted or received.

antena

Aerospace; Satellites

A device for transmitting and receiving radio waves. Depending on their use and operating frequency, antennas can take the form of a single piece of wire, a di-pole a grid such as ...

orbitalni period

Aerospace; Satellites

The time that it takes a satellite to complete one circumnavigation of its orbit.

šum

Aerospace; Satellites

Any unwanted and unmodulated energy that is always present to some extent within any signal.

modulator

Aerospace; Satellites

A device which modulates a carrier. Modulators are found as components in broadcasting transmitters and in satellite transponders. Modulators are also used by CATV companies to ...

herc (Hz)

Aerospace; Satellites

The name given to the basic measure of radio frequency characteristics. An electromagnetic wave completes a full oscillation from its positive to its negative pole and back again ...

interferencija

Aerospace; Satellites

Energy which tends to interfere with the reception of the desired signals, such as fading from airline flights, RF interference from adjacent channels, or ghosting from reflecting ...

inklinacija

Aerospace; Satellites

The angle between the orbital plane of a satellite and the equatorial plane of the earth.

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