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Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
關稅逆轉前18hrs內幕曝！川普憑直覺考慮豁免部分美企
川普（Donald Trump）與財政部長貝森特（Scott Bessent）於9日下午接受媒體提問，當被問到是否會考慮為一些因新關稅而受創嚴重的大型美國企業提供「豁免」時，川普表示他願意考慮。此外，《華盛頓郵報》獨家披露了讓他改變心意的18小時內幕。
根據《福斯新聞》報導，川普回答說：「我們會在未來看看，我們會去了解這件事。有一些企業受到的打擊確實比較大——有些企業因其本身業務性質而受到較大衝擊，我們會去看看能不能處理這問題。」當被問到他會如何判斷哪些企業可以獲得豁免時，川普回答：「憑直覺。」
他補充說：「你幾乎不可能拿筆在紙上算出來，這更多是一種直覺，而不是什麼理論。有些企業，並不是他們的錯，只是剛好處在某些特別受關稅影響的產業中。你得展現一點彈性，而我具備這種能力。」
本文出自: https://www.chinatimes.com/realtimenews/20250410001994-260408
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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