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Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
影》最高領袖宣戰 伊朗向以色列發射高超音速飛彈
以色列和伊朗交火進入第6天，雙方緊張仍無緩和跡象。而伊朗最高領袖哈米尼（Ayatollah Ali Khamenei）在X社群平台上宣布，「以尊貴的海達爾（Haidar）之名，戰鬥開始了。」而海達爾是先知穆罕默德繼承人阿里常用的名字。
綜合外媒18日報導， 哈米尼在貼文中說，「我們必須對恐怖主義猶太復國主義政權給予強烈回應。我們不會憐憫猶太復國主義者。Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)」
伊朗伊斯蘭革命衛隊（IRGC）說，已向以色列發射了法塔赫-1（Fattah-1）「高超音速」飛彈。伊朗在2024年10月1日對以色列的攻擊中，也發射了數十枚「法塔赫-1」飛彈，但這似乎是這次交戰中首度動用這款飛彈。 革命衛隊將這次行動的最新階段形容為「轉捩點」，強調「法塔赫」飛彈的部署，標誌著以色列「神話般」飛彈防禦系統「終結的開始」。
本篇文章引用自此: https://www.chinatimes.com/realtimenews/20250618001821-260408
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.
各有特色超吸睛！ 網議TOP7「人氣觀光列車」成為移動打卡新熱點 868MHz Antenna
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