Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
日本企業家前澤友作今天曬出他6年前下訂，即將完工的超級遊艇。（資料照/美聯社）
以下文章來自: https://www.chinatimes.com/realtimenews/20250814003905-260408
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.
有錢任性！富豪曬超級遊艇「可上山下海」能在全地球大海冒險
49歲日本富豪企業家前澤友作今天（ 14 日）在 X平台發文，透露他 6 年前向德國老牌船廠LÜRSSEN 下單、全長114公尺長的超級遊艇，現已接近完工。
根據東京體育網站報導，前澤友作表示，遊艇預計明年春天完成。目前外觀已幾乎完工，正進行內部裝修。「船體大量運用曲線，線條柔和，採用灰白雙色塗裝。設計總監是紐森（Marc Newson）。Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)」
前澤透露他對遊艇的設計要求是：「一定要做出前所未見、獨一無二的遊艇，而且外形必須柔和。」負責打造的LÜRSSEN公司擁有 150 年歷史，這艘遊艇具備可航行全球任何海域的能力。遊艇上配置了潛水艇、釣魚船以及直升機停機坪。前澤表示：「有時可以乘潛水艇潛入最深 200 公尺的海底，欣賞另一個世界；有時可與世界各地的巨型魚類搏鬥釣魚；有時則搭乘直升機沿著海岸線遊覽甚至登陸。總之，這艘船配備了所有能在地球所有海域大冒險的工具與功能。」。
以下文章來自: https://www.chinatimes.com/realtimenews/20250814003905-260408
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.