Search results
Results From The WOW.Com Content Network
A hexbeam, or hexagonal-beam, is a type of a directional antenna for shortwave, most often used in amateur radio. The name comes from the hexagonal outer shape of the antenna. It may also sometimes be known as a W-antenna, referring to the shape of the driver. The design looks something like an upturned umbrella.
Patch antenna gain pattern. A directional antenna or beam antenna is an antenna which radiates or receives greater radio wave power in specific directions. Directional antennas can radiate radio waves in beams, when greater concentration of radiation in a certain direction is desired, or in receiving antennas receive radio waves from one specific direction only.
Biles captured her second gold medal of Rio Olympics, winning the women's all-around by a whopping 2.1 points in a sport that keeps score to the hundredth of a point. Not only was the performance ...
In electromagnetics, an antenna's gain is a key performance parameter which combines the antenna's directivity and radiation efficiency. The term power gain has been deprecated by IEEE. [1] In a transmitting antenna, the gain describes how well the antenna converts input power into radio waves headed in a specified direction. In a receiving ...
The floor exercise (English abbreviation FX) is the event performed on the floor, in both women's and men's artistic gymnastics (WAG and MAG). The same floor is used for WAG FX and MAG FX, but rules and scoring differ; most obviously, a WAG FX routine is synchronised to a piece of recorded dance music , whereas MAG FX has no musical accompaniment .
These are the results of the women's balance beam competition, one of six events for female competitors in artistic gymnastics, at the 1980 Summer Olympics in Moscow.The qualification and final rounds took place on July 21, 23, and 25 at the Sports Palace of the Central Lenin Stadium.
A beam waveguide antenna is a type of complicated Cassegrain antenna with a long radio wave path to allow the feed electronics to be located at ground level. It is used in very large steerable radio telescopes and satellite ground antennas, where the feed electronics are too complicated and bulky, or requires too much maintenance and alterations, to locate on the dish; for example those using ...
In a radio antennas, the main lobe or main beam is the region of the radiation pattern containing the highest power or exhibiting the greatest field strength.. The radiation pattern of most antennas shows a pattern of "lobes" at various directions, where the radiated signal strength reaches a local maximum, separated by "nulls", at which the radiation falls to zero.