A test system on antenna effect analysis under lightning strikes

Abstract

A test system applied to analyze lightning effect on aircraft antenna is proposed. The designed system is made up of the lightning surge generator, arc discharge rod, antenna to be tested, aluminum shield, water resistance voltage divider, portable digital oscilloscope and network analyzers. In the measurement, the tested antenna is mounted on the top of the aluminous experimental box. The lightning current is directly or indirectly injected into the antenna through the arc discharge rod. Moreover, the load resistor of 50Ω is at the terminal, and the water resistance voltage divider that carries the residual lightning current is connected with a digital oscilloscope. The experimental results indicate that the proposed system with good reliability and anti-interference ability is simple, which is also demonstrated to be applicable for performing antenna Lightning effect analysis.