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快訊／梧州街夜市有人墜樓！男「突摔落6F天井」命危 民眾目擊嚇壞
eNews新聞網/江宜潔
2023.11.27 14:40
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
台北市萬華區梧州街觀光夜市一處大樓，今（27）日稍早發生一起墜樓案件，一名年約60歲男子突然因不明原因從摔下、倒臥6樓天井，嚇得不及民眾連忙報警求助。
初步了解，警消獲報趕抵時，該名男子早已沒了生命跡象、頭部有明顯外傷，目前已被進緊急送醫搶救中，至於全案是否涉及輕生，以及確切事發原因為何，均還有待進一步釐清。
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文章來自: https://n.yam.com/Article/20231127393262
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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