Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
流行天后
女神卡卡（Lady Gaga）
巡演再傳驚險插曲。Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)根據美國娛樂媒體「Page Six」報導，她於當地時間12日在澳洲雪梨雅高體育場（Accor Stadium）舉行「Mayhem Ball」巡演最終場時，因突如其來的豪雨導致舞台濕滑，一名舞者不慎從舞台跌落，演唱會一度緊急中斷。 網路瘋傳影片可看到，女神卡卡演唱「Eden of Garden」的時候，舞者們在被雨水打濕的舞台上向前行進，過程中其中一名舞者腳步打滑，瞬間失去平衡跌下舞台。事故發生後，女神卡卡立刻衝向前，其他舞者與工作人員也迅速反應，她更揮手大喊「停下來」，當場叫停演出。
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隨後，女神卡卡透過麥克風對觀眾說「請等一下」，並親自下台關心舞者狀況，詢問是否受傷。為了確保舞者安全，她決定暫停演出，讓團隊更換適合雨天的鞋子後再繼續表演。所幸該名舞者並未受傷，演出稍作調整後順利恢復，舞者也重新回到舞台完成演出。事後，他在社群平台向關心的粉絲報平安，表示「我沒事」，並感性寫道：「很開心能平安完成今年最後一場演出。」 不過，女神卡卡最近巡演狀況很多，上周則有一名曾因襲擊
亞莉安娜（Ariana Grande）而引發爭議的男子，也在女神卡卡於布里斯本桑科普體育場開唱前數小時，遭主辦單位請出場外。
以下文章來自: https://stars.udn.com/star/story/10092/9203176?from=udn-catenewnews_ch1022
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.
