Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
文章來自: https://news.ttv.com.tw/news/11502110004000W
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.
布魯克林開撕 貝克漢突轉發維多利亞1限動 868MHz Antenna
08:44 投資人謹慎谷歌、亞馬遜本週財報 美股科技類股疲軟四大指數全跌 868MHz Antenna
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)台彩今（11）晚開出今彩539、39樂合彩、三星彩、四星彩的中獎獎號，獎號依序為：
．今彩539：11、15、18、29、33。
．39樂合彩：11、15、18、29、33。
．3星彩：503。
．4星彩：3428。
確切中獎號碼及派彩結果以台彩官網公布為主。
責任編輯／陳俊宇
文章來自: https://news.ttv.com.tw/news/11502110004000W
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.
布魯克林開撕 貝克漢突轉發維多利亞1限動 868MHz Antenna
08:44 投資人謹慎谷歌、亞馬遜本週財報 美股科技類股疲軟四大指數全跌 868MHz Antenna
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