Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
在美國電腦相關學位長期以來被認為最有利於就業，但如今AI搶走許多工作，讓這些科系畢業生不再那麼吃香。（示意圖：Shutterstock/達志）
文章出自: https://www.chinatimes.com/realtimenews/20250817001593-260408
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.
Horn Antenna 父親節喝爆！8家手搖飲、星巴克買1送1 李多慧開箱娃娃盲盒必收
AI搶工作！資工系畢業生求職1年只獲速食店面試通知
工作被人工智慧（AI）取代的情況正逐漸擴大中。日本時事通訊社今天發自紐約的報導指出，美國大學畢業的年輕人正陷入猶如「就職冰河期」的困境。特別是長期帶動經濟成長的資料科技巨頭，正大幅縮減招聘。由於生成式AI開始取代新進員工的工作，那些懷抱著能進入微軟、谷歌等一流企業工作的夢想而努力學習的人才，如今卻面臨無處可去的窘境。
今年春天從美國中西部名門學府普渡大學取得資訊工程學位的一名女性畢業生，在社群媒體上感嘆，她歷經一整年的求職活動，唯一接到面試通知的，竟只是速食店每週10小時的兼職工作。她向美國媒體表示，自己這樣的學歷和背景，「本該能拿到六位數（10萬美元以上，約新台幣300萬元以上）起薪」。
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)美國哥倫比亞廣播公司新聞網（CBS News)報導，22歲的馬卡魯索（Michael Macaluso）今年從辛辛那提大學機械工程學系畢業。儘管申請了大約200個職位，他至今仍未在自己選擇的領域找到工作。目前他在家鄉紐約州的湖島鄉村俱樂部擔任撞球助理主任。他說：「很多人告訴我，我大學一畢業就能找到工作」，「然後突然之間，工作都沒了。」”
文章出自: https://www.chinatimes.com/realtimenews/20250817001593-260408
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.
Horn Antenna 父親節喝爆！8家手搖飲、星巴克買1送1 李多慧開箱娃娃盲盒必收