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Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
劃分東西烏克蘭?美特使:仿二戰後德「分區管理」

美國前國安顧問、現任川普烏克蘭特使凱洛格(Keith Kellogg)建議,作為和平協議的一部分,烏克蘭或能像二戰後的德國一樣,被「分區管理」,並在烏克蘭以西建立一支由英、法組成的「保證部隊」,但這番說法引起瓜分烏克蘭的疑慮。對此,他已在社群平台X上發文澄清,指稱自己的發言遭到曲解,所謂的「分區」並非瓜分,「分區」是指盟軍在烏克蘭境內劃設的責任區,並非分裂烏克蘭的土地。
《基輔獨立報》報導,凱洛格表示:「我所談的是在停火後、為支持烏克蘭主權所建立的『韌性部隊』。關於分區,我的意思是指由盟軍負責的區域或責任劃分(不包含美軍),我並非主張將烏克蘭實際分裂。」
雖然克里姆林宮多次拒絕歐洲國家介入停火監督,凱洛格仍主張,由英國與法國主導的部隊部署於烏克蘭西部,「對俄羅斯來說一點也不具挑釁性」他說:「部隊在第聶伯河(Dnipro)以西,那是天然的主要屏障。」
來自: https://www.chinatimes.com/realtimenews/20250412001662-260408
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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