Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
以下文章來自: https://n.yam.com/Article/20240625620626
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.
科技之星辦理駕駛人教育訓練,邀請財團法人桃園市私立脊髓損傷潛能發展中心代表蒞臨授課。(圖/竹市監理站提供)
【勁報記者羅蔚舟/新竹報導】
科技之星公司6月24日於公司車輛保養場辦理駕駛人教育訓練(包含路口停讓及身障與視障者服務之主題),邀請財團法人桃園市私立脊髓損傷潛能發展中心代表蒞臨授課。
這次教育訓練除了由講師現場請學員(客運駕駛人)實際操作服務輪椅乘客上下車外,也邀請學員換位扮演輪椅乘客,以身分轉換的方式,駕駛人對輪椅乘客的需要更加能夠感同身受。現場也進行車輛轉彎時,「指差確認」的演練,以期駕駛人以身到、口到、心到的作為,落實路口停讓,共同守護交通安全。
路口停讓對於行人安全保障相當重要,下車後每個人都可能是行人,每個人都有責任維護行人安全。客運業車輛行駛固定路線,是道路的經常性使用者,駕駛人需養成完善的路口停讓觀念,以增進安全。此外,客運業駕駛人除了基本的駕車安全外,亦須具備多項知識及技能,方能完善客運服務,包含「服務輪椅族、視障朋友、失智症朋友」的作業流程及技巧等。
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)以下文章來自: https://n.yam.com/Article/20240625620626
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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