南非薩爾達尼亞西海岸航空展發生悲劇，一名富經驗的空軍飛行員在單飛特技表演中不幸墜機身亡，現場近2千名觀眾目睹了這令人震驚的一幕。

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

目擊者描述，飛機在升空後失去控制，在空中旋轉後墜毀地面，並引發大火。

遇難飛行員為詹姆斯·奧康奈爾（James O'Connell），擁有近 40 年飛行經驗。當時他駕駛的是一架註冊編號為 ZU-IMP 的 Impala Mk II 噴射機。在發現飛機失控時，他嘗試彈射逃生，但仍不幸罹難。

本文來自: https://www.chinatimes.com/realtimenews/20250323003051-260408
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.