Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
文章出自: https://news.ttv.com.tw/news/11501150003900W
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.
台彩今（15）晚開出威力彩第115000005期獎號，由於頭獎已連續22期未開出，本期頭獎獎金上看5.2億元，第一區號碼為：08、10、16、26、31、38；第二區號碼為：05。
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)其他獎項獎號如下：
．今彩539：01、02、03、19、36。
．39樂合彩：01、02、03、19、36。
．3星彩：592。
．4星彩：3304。
派彩結果及中獎號碼以台彩官網公布為主。
責任編輯／蔡尚晉
文章出自: https://news.ttv.com.tw/news/11501150003900W
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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