close
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
來自: https://n.yam.com/Article/20241012683236
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.
（記者黃信峯／嘉義報導）嘉義縣文物學會辦理「文物展覽風韻秀徹會員聯展」，自即日起至12月2日於長榮文苑酒店(嘉義)登場，今(12)日上午舉行開幕儀式，由理事長戴明堂主持，協會總幹事林嘉華說明參展的作品，琳琅滿目，吸引來自各地愛好藝術朋友到場觀賞。
圖/嘉義縣文物學會舉辦「文物展覽風韻秀徹會員聯展」。記者黃信峯攝
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)開幕儀式，理事長戴明堂主持，眾多藝文界人士應邀參加，嘉義市祥太文化館王福源醫師、嘉義縣青溪新文藝學會陳姿夙、市議員陳家平、縣議員黃啟豪等貴賓出席參加。
圖/嘉義縣文物學會舉辦「文物展覽風韻秀徹會員聯展」。記者黃信峯攝
戴明堂理事長表示，首先感謝各位長官、貴賓前來參加嘉義縣文物學會「文物展覽風韻秀徹會員聯展」，本次展覽主題風韻秀徹-仕女文物，便是透過畫作，透過陶、瓷器等，讓大家認識這份美好的靈動，透過文物展現更可瞭解當代女性造像典範、如服飾、髮髻甚至是身上的配件等。
圖/嘉義縣文物學會舉辦「文物展覽風韻秀徹會員聯展」。記者黃信峯攝
林嘉華總幹事表示，本次展覽，還展出具有相當特色的文物器具，甚至是創作品項等，讓觀賞者領略文物之美的藝術與工藝價值，值得細細品味觀賞與收藏，歡迎大家前來觀賞。
更多引新聞報導
來自: https://n.yam.com/Article/20241012683236
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.
文章標籤
全站熱搜
留言列表
