引用自: https://www.setn.com/News.aspx?NewsID=1752234 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. Horn Antenna 楊丞琳突拋喜訊!術後露面宣布「重大事項」重啟新人生 鄭雨盛私生子風波後攜新作亮相香港!頹廢風惹尖叫 玄彬扛不住偷喊1字 Outdoor Antenna
