本篇文章引用自此: https://stars.udn.com/star/story/10091/9271772?from=udn-catehotnews_ch1022 The Log Periodic Antenna as known as LPDA is a wideband directional antenna that provides gain and directivity combined over a wide band of frequencies. Both Log-Periodic Antennas and Yagi antennas are high gain directional antennas. The main difference between these antennas is that Log-Periodic Antennas support wider frequency bandwidths and are physically much larger than Yagi antennas. The log-periodic dipole array typical VSWR is 2:1 and operates over a much wider bandwidth and will have a lower gain for an equivalent number of elements. With this level of performance, it is ideal for many applications, although a log-periodic antenna will be much larger than a Yagi of an equivalent gain. 12:15 黃子鵬加盟台鋼雄鷹！回故鄉辦儀式見到爸媽哭了 淚謝家人全力支持 Horrn Antenna
