Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
來自: https://news.ttv.com.tw/news/11501060000700W
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.
《星廚之戰》邁入尾聲 施捷夫秀家常菜 Horrn Antenna
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)台股昨天一路狂飆站上3萬點，創下歷史新紀錄，今（6）日開盤下跌171.39點，以29933.65點開出，不過隨後跌勢快速收斂由黑翻紅，早盤一度上漲153.02點，最高觸及30258.06點，再度重返3萬大關。
權值股方面，護國神山台積電（2330）開盤下跌25元至1645元，暫報1670元；鴻海（2317）上漲2.5元至237元，暫報235元；聯發科（2454）上漲10元至1505元，暫報1500元；台達電（2308）跌5元至1005元，暫報1000元。
責任編輯／馮康蕙
來自: https://news.ttv.com.tw/news/11501060000700W
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.
《星廚之戰》邁入尾聲 施捷夫秀家常菜 Horrn Antenna
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