VIDEO | Crew-10 team - which includes NASA's Anne McClain and Nichole Ayers, Japan Aerospace Exploration Agency's Takuya Onishi and Roscosmos cosmonaut Kirill Peskov - arrives at International Space Station. The Crew-10 team will replace astronauts Sunita Williams and Barry… pic.twitter.com/sHr0FXmZIA
以下內文出自: https://www.chinatimes.com/realtimenews/20250316001984-260408 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. 明晚變天!大雨連炸5天 下週氣溫驟降「一夜回冬天」 Horn Antenna 意外緣分? 超商門貼"橘貓" 薩摩耶狂叫.柴犬緊盯 Horn Antenna