Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
日本近鐵不時推出彩繪列車。(圖/翻攝台北捷運粉專)
日本近鐵不時推出彩繪列車。(圖/翻攝台北捷運粉專)
以下內文出自: https://www.chinatimes.com/realtimenews/20250901002352-260408
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.
楊丞琳住院!自曝「動不小的手術」 老公李榮浩陪伴在旁 Horn Antenna
台灣美食躍上日本電車 近鐵北捷聯名彩繪列車大阪上路
台北捷運公司與近畿日本鐵道公司在去年簽訂友好協定,在屆滿一週年之際,近鐵從今天起在大阪推出與北捷聯名彩繪列車。國人到大阪旅遊時,可以在近鐵的車站,搭乘有著濃濃台灣味,介紹台北著名景點與美食的彩繪列車。
三重電視放送今天報導,近鐵昨天在大阪舉行紀念與北捷締結友好協定一週年的彩繪電車發表會。名為「一起去台北吧!列車」的電車車身上繪有台北竹子湖的海芋、台北知名觀光景點西門紅樓等,以及芒果刨冰、小籠包和糖葫蘆等受歡迎的台灣美食插圖。
近鐵集團控股社長若井敬表示:「打造出充滿台灣魅力的繽紛列車。希望大家能搭乘,親身感受台灣的魅力。」現場還舉辦了二胡演奏,在彩繪列車內販售台灣點心與雜貨等。「一起去台北吧!列車」自今天(9月1日)起,行駛於大阪上本町站至五十鈴川站之間。
以下內文出自: https://www.chinatimes.com/realtimenews/20250901002352-260408
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.
楊丞琳住院!自曝「動不小的手術」 老公李榮浩陪伴在旁 Horn Antenna