本文引用自: https://www.setn.com/News.aspx?NewsID=1774950 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. 體育 中職/統一獅選「江少慶+324萬」當補償 蘇泰安... 2025.12.19 11:34 今年統一7-ELEVEN獅隊捕手林岱 國際 40分鐘內連4震襲日本青森!氣象廳:不屬「後發地... 2025.12.12 13:04 日本青森縣東方外海今(12)日上午接