A radome (radar dome) is a weatherproof enclosure (disambiguation) used to protect an antenna (electronics). It is used mainly to prevent ice (especially freezing rain) from accumulation directly onto the metal surface of the antenna. In the case of a spinning radar dish antenna, the radome also protects from debris and rotational irregularities due to wind. For stationary antennas, excessive amounts of ice can detuning the antenna to the point where its impedance at the input frequency rises drastically, causing VSWR to rise as well. This reflected power goes back to the transmitter, where it can cause overheating. A foldback circuit activates to prevent this; however, it causes the station's output power to drop dramatically, reducing its range. A radome prevents this by covering the antenna's exposure parts with a sturdy, weatherproof material, typically fibreglass, which keeps the ice far enough away from the antenna to prevent any serious issues. A radome does however add to the wind load and the ice load, in addition to its own weight, and so must be planned for when considering overall structural load. For this reason, and the fact that radomes may be eyesore if near the ground, heaters are often used instead. Usually running on direct current, the heaters do not interfere physically or electrically with the alternating current of the radio transmission (telecommunications). For radar dishes, the single, large, ball-shaped dome (usually Geodesic dome) also protects the rotational mechanism, and the sensitivity (electronics) electronics, and is heating in colder climates to prevent icing. Radar
==Irregular Geodesic domes== The radomes in the image here, are clearly based on a geodesic dome but have a more irregular distribution of the nodes. Can anyone confirm that the nodes are displaced randomly to avoid some sort of interference with the radar signal. -- User:Solipsist 08:17, 27 Mar 2005 (UTC)
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Words begining with Radome:
Radome
Radome
Radome
A radome (radar dome) is a weatherproof enclosure (disambiguation) used to protect an antenna (electronics). It is used mainly to prevent ice (especially freezing rain) from accumulation directly onto the metal surface of the antenna. In the case of a spinning radar dish antenna, the radome also protects from debris and rotational irregularities due to wind. For stationary antennas, excessive amounts of ice can detuning the antenna to the point where its impedance at the input frequency rises drastically, causing VSWR to rise as well. This reflected power goes back to the transmitter, where it can cause overheating. A foldback circuit activates to prevent this; however, it causes the station's output power to drop dramatically, reducing its range. A radome prevents this by covering the antenna's exposure parts with a sturdy, weatherproof material, typically fibreglass, which keeps the ice far enough away from the antenna to prevent any serious issues. A radome does however add to the wind load and the ice load, in addition to its own weight, and so must be planned for when considering overall structural load. For this reason, and the fact that radomes may be eyesore if near the ground, heaters are often used instead. Usually running on direct current, the heaters do not interfere physically or electrically with the alternating current of the radio transmission (telecommunications). For radar dishes, the single, large, ball-shaped dome (usually Geodesic dome) also protects the rotational mechanism, and the sensitivity (electronics) electronics, and is heating in colder climates to prevent icing. Radar
Radome
==Irregular Geodesic domes== The radomes in the image here, are clearly based on a geodesic dome but have a more irregular distribution of the nodes. Can anyone confirm that the nodes are displaced randomly to avoid some sort of interference with the radar signal. -- User:Solipsist 08:17, 27 Mar 2005 (UTC)
See other meanings of words starting from letter:
R
RA | RB | RC | RD | RE | RF | RG | RH | RI | RJ | RK | RL | RM | RN | RO | RP | RS | RT | RU | RW | RX | RY | RZ |Words begining with Radome:
Radome
Radome
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