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Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
俄認「經濟衰退」原因曝 罕求救他們：多給一點愛
俄羅斯經濟正「瀕臨衰退」，經濟部長雷謝特尼科夫（Maxim Reshetnikov）週四在聖彼得堡國際經濟論壇（SPIEF）上警告，為這場旨在吸引外資的重要年度盛會，投下了一道陰影。他也呼籲俄羅斯的中央銀行「對經濟表現出一點關愛」。
綜合《莫斯科時報》、路透社報導，雷謝特尼科夫在論壇第二天對記者表示，「目前的商業信心與各項指標顯示出經濟即將下行的跡象。」此外，他還說：「整體而言，我認為我們正站在衰退的邊緣，未來會怎麼發展，取決於我們的決策。」他也呼籲俄羅斯央行對經濟「表現出一點愛」。
自2022年2月全面入侵烏克蘭以來，俄羅斯經濟波動劇烈。儘管曾因國防支出創新高而出現短暫增長，但目前成長已明顯放緩，並出現「過熱」跡象。
本文引用自: https://www.chinatimes.com/realtimenews/20250620001547-260408
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.
小琉球碼頭湧現收假人潮 舊鐵橋花海遭隨意踩踏 Horn Antenna
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