log periodic ANTENNA

Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)

記者 彭成平台北市報導

Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)台北市吉林路422號附近住家在9號晚上21：30分突然全面停電，原因是氣溫飆高，家家戶戶開冷氣造成老舊電線不堪負荷而走火。台電公司立即展開全力搶救，經過努力後成功恢復正常供電。

台電工作人員指出，每年6月到8月是用電高峰期，建議擁有老舊管線的住戶應全面更新以避免類似事件再次發生。他們強調，更新電線是為了保障用戶的安全，避免因老舊電線問題造成的火災等意外事件。

此次停電事件提醒大眾注意用電安全，特別是在夏季高溫時期，要注意冷氣使用時的安全性，避免對電線造成過大負荷。同時，建議住戶定期檢查電線和配電箱的狀況，及時進行維修和更新，確保家庭用電安全可靠。

希望這次事件能夠引起社會大眾對用電安全的重視，促使更多人關注和改善家庭電線設施，為生活環境的安全提供更好的保障。

來自: https://n.yam.com/Article/20240709781844
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.