Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
以下文章來自: https://stars.udn.com/star/story/120661/9278580?from=webpush
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.
YouTuber蕾菈去年9月初突無預警宣告離婚，結束與DJ湯宇的3年婚姻，近來則被爆出身邊已有新歡，對象就是同樣也是YouTuber的晨灰，而早在蕾菈宣布離婚前，就被拍到曾出入男方家。
據「CTWANT」報導，去年8月22日蕾菈參加完德州撲克賽後，沒有返回自家，反而前往另一處大樓，到了今年1月拍到晨灰進出該棟大樓同樓層，被疑此處是晨灰的住處。
而蕾菈在離婚後，就曾多次與晨灰合作拍片，兩人一起到上海、新加坡拍攝，影片主題還讓晨灰扮成蕾菈的假男友，拍攝一些親密互動，不過蕾菈對外始終宣稱兩人只是關係很好的朋友。
對於這次兩人進出同一棟大樓，蕾菈也再次強調，與晨灰是非常好的朋友，目前沒有任何戀愛的想法，偶爾會去晨灰家打牌、玩桌遊，而且現場也會有其他朋友們在，不會有單獨兩人的情況。
以下文章來自: https://stars.udn.com/star/story/120661/9278580?from=webpush
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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