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A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish. The main advantage of a parabolic antenna is that it has high directivity.
As of 2015, the company stated it owned the following brands with net annual sales of more than $1 billion: [ 1] Always menstrual hygiene products [ 2] Ariel laundry detergent. Bounty paper towels, sold in the United States and Canada. Charmin bathroom tissue and moist towelettes [ 3] Crest toothpaste [ 4] Dawn dishwashing.
Gain or 'absolute gain' is defined as "The ratio of the radiation intensity in a given direction to the radiation intensity that would be produced if the power accepted by the antenna were isotropically radiated". [ 1] Usually this ratio is expressed in decibels with respect to an isotropic radiator (dBi).
Dishwashing liquid (or washing-up liquid in British English ), or dishwashing soap, dish detergent, and dish soap is a detergent assisting in dishwashing. Dishwashing detergents for dishwashers come in various forms like cartridges, gels, liquids, pacs, powder, and tablets. [ 1] It is usually a highly- foamy mixture of surfactants with low skin ...
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In telecommunications and radar engineering, the antenna boresight is the axis of maximum gain (maximum radiated power) of a directional antenna. For most antennas the boresight is the axis of symmetry of the antenna. For example, for axial-fed dish antennas, the antenna boresight is the axis of symmetry of the parabolic dish, and the antenna ...
Aperture (antenna) In electromagnetics and antenna theory, the aperture of an antenna is defined as "A surface, near or on an antenna, on which it is convenient to make assumptions regarding the field values for the purpose of computing fields at external points. The aperture is often taken as that portion of a plane surface near the antenna ...
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