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Array Antenna
An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. The individual antennas (called ''elements'') are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase relationship. The radio waves radiated by each individual antenna combine and superpose, adding together ( interfering constructively) to enhance the power radiated in desired directions, and cancelling ( interfering destructively) to reduce the power radiated in other directions. Similarly, when used for receiving, the separate radio frequency currents from the individual antennas combine in the receiver with the correct phase relationship to enhance signals received from the desired directions and cancel signals from undesired directions. More sophisticated array antennas may have multiple transmitter or receiver modules, each connected to a separate a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eight Bay Bowtie TV Antenna
8 is a number, numeral, and glyph. 8 or eight may also refer to: Years * AD 8, the eighth year of the AD era * 8 BC, the eighth year before the AD era Art *The Eight (Ashcan School), a group of twentieth century painters associated with the Ashcan School *The Eight (painters), an avant-garde art movement of Hungarian painters Motor vehicles *Bentley Eight, Bentley's "entry-level" offering from 1984 until 1992 * Leyland Eight, a luxury car produced by Leyland Motors from 1920 to 1923 *Mercury Eight, a first Post War Mercury car design *Morris Eight, a small car inspired by the Ford Model Y *Standard Eight, a small car produced by Standard Motor Company 1938–59 *Wolseley Eight, a four-door, light saloon car produced by Wolseley Motors Limited from 1946 to 1948 *Straight eight, automobile engine *Eight cylinder, automobile engine Sports * Eight (rowing), rowing boat used in the sport of competitive rowing *Figure 8 (belay device), rock climbing equipment also known as an "eig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
