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柳營奇美醫院舉辦衛教關懷活動 揮毫送福迎新春 「龍金健康」悠遊行
記者:楊憲朋 台南市報導
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Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
活動現場書法老師以龍年為主題,結合龍的圖案及中英台式諧音,套
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本文引用自: https://n.yam.com/Article/20240107923119
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.