文件:Antenna.jpg

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English: Television antennas. These six antennas are of a type called a Yagi-Uda antenna, widely used for television reception at VHF and UHF frequencies. They consist of a series of parallel metal rods. One pair of rods, called the driven element, collects the radio waves and is attached to a cable that conducts the television signal to the television. The other rods, called parasitic elements, serve to increase the sensitivity of the antenna to signals coming from a particular direction.
日期 2007-02-05
来源 原作者上传至维基共享资源
作者 Yonatan Horan

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