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Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
引用自: https://n.yam.com/Article/20240722875119
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.
【巴黎奧運】中華隊掌旗官 戴資穎與霹靂舞選手孫振 老將帶新秀
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)巴黎奧運7月26日開幕，霹靂舞選手孫振將與戴資穎共同擔任巴黎奧運開幕式台灣代表團掌旗官。
將在年底退休的「羽球天后」戴資穎，巴黎奧運是她參加奧運的最後一屆，如果表現正常，「小戴」最後一舞也有機會穿金戴銀風光退休。同時，今年以霹靂舞入選中華隊的孫振，生於1999年，在921大地震當晚出生，父母將他取名為「振」，而他的英文名字也叫做Quake，從小就透過影片鑽研跳舞技巧，本屆巴黎奧運首度將「霹靂舞」列為正式比賽項目，孫振成為台灣首位取得參賽資格的選手。
戴資穎今年第4度出戰奧運，孫振是初體驗，孫振回想起接到成為掌旗官的通知，透過經紀公司分享收到通知時的心情。他說，「因為比我更有經驗的人大有人在，我又算是奧運菜鳥，能有這個機會是很榮幸的，畢竟霹靂舞是第一次進到體育的視野裡，可能和這次巴黎的文化奧運也有一點點關聯性，所以決定讓霹靂舞者來擔任掌旗官。」
孫振今年6月從台北市立大學運動藝術學系畢業，一同擔任掌旗官的戴資穎同樣來自北市大，戴資穎已於2022年取得北市大競技運動訓練研究所博士班學位。兩人同時擔任掌旗官出場也有傳承的味道。
引用自: https://n.yam.com/Article/20240722875119
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.
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