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Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)"
]
}
}
太平山雪況/零下2度沒下雪 追雪車輛大排長龍 | 蕃新聞
文章來自: https://n.yam.com/Article/20240124954161
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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Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
太平山雪況/零下2度沒下雪 追雪車輛大排長龍
觀傳媒/
2024.01.24 08:32
(觀傳媒宜蘭新聞)【記者陳俊傑/宜蘭報導】寒流來襲,太平山昨日降下今年第一場瑞雪,吸引不少民眾上山賞雪。今(24)日一早氣溫依然在零度以下(即時溫度-2度),但已經沒有下雪了,不過,依舊有許多追雪族上山想一賭雪景。
位於北台灣宜蘭山區的太平山國家森林遊樂區,介於海拔365-2000公尺之間,冬季強烈寒流來臨,區內海拔1000公尺以上據點,就有下雪機會。昨天就降下今年第一場瑞雪,消息傳出吸引大批民眾上山賞雪。今天氣溫依舊寒冷,目前太平山的溫度是零下2度,不過,因為水氣不足,並沒有持續下雪,但還是有很多民眾趕著上山想一賭銀色世界。管制站前車輛已大排長龍,有民眾說,已經等了40分鐘還在車陣裏面。
林業保育署宜蘭分署表示,為維護遊樂區內遊憩品質,太平山實施入園車輛動態總量管制措施,當入園車輛數達800台時,由售票站開始預告管制,當入園車輛到達上限1,000台時,不再提供車輛入園,倘有車輛離園才會放行(即有出才能再進園)。入園即時車輛數可上太平山官方網站查詢(https: //tps.forest.gov.tw)。
文章來自: https://n.yam.com/Article/20240124954161
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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