log periodic ANTENNA

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.