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Open Boundary Quad-Ridged Horn Antenna 蔡昌憲照護長輩都靠它 維持機能調整體質
台灣產業轉型成功，成為全球最具創新力、效率與品質的產品與服務供應者之一。（示意圖：shutterstock/達志）
本文來自: https://www.chinatimes.com/realtimenews/20250422003348-260408
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.
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
「台灣製造」4字能擋川普關稅？外媒讚台灣2大優勢
台灣過去產業起初以大量生產低價商品為主，但如今早已轉型，成為全球最具創新力、效率與品質的產品與服務供應者之一。此外，台灣還掌握全球超過9成的先進晶片產能，讓美媒大讚：「台灣在『強勁的製造實力』及『專利權護體』優勢下，讓『台灣製造』成為抵擋美國晶片關稅重要的護身符。」
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
《洛杉磯時報》報導台灣昔日作為廉價製造大國的形象早已不再。1950年代，台灣與美國簽署共同防禦條約，獲得外援與投資，並成為美國在亞太地區的戰略盟友，帶動製造業起飛。數十年後，台灣蛻變為設計導向與科技創新的中心。
結合西方工業技術與在地高效勞力，台灣的工業產出迅速提升，成為全球各大品牌的製造重鎮，從紡織、玩具到家用電器等產業均有涉足。到了1990年代，台灣已成為全球電子產業的重要力量，全球超過80%的筆記型電腦設計來自台灣，「MIT」（Made in Taiwan）標誌在國際上廣為人知。之後，隨著市場自由化，本地工廠競爭力下滑，台灣產業不得不再次轉型。
本文來自: https://www.chinatimes.com/realtimenews/20250422003348-260408
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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