宽带隐身天线罩设计

Design of a Broadband Stealth Radome

实现通信、侦察、电子对抗功能的天线是飞行器的主要散射来源之一,其隐身性能直接影响飞行器的生存能力。对天线进行保护的天线罩的隐身设计是实现天线良好隐身性能难以避开的难题。为此,设计了一种宽带隐身天线罩。通过采用A夹层结构实现天线罩的宽带透波特性,并进一步通过对天线罩透波区域外形设计实现了天线罩的宽带隐身特性,其雷达散射截面(Radar Cross Section,RCS)在X、Ku频段接近-40 d Bsm。该宽带隐身天线罩可用于隐身平台上天线散射特性控制。

The antenna for communication,reconnaissance and electronic countermeasure is one of the main scattering sources of the aircraft,and its stealth performance directly affects the viability of the aircraft.Stealth design of radome for antenna protection is a difficult problem to avoid in order to achieve good stealth performance of antenna. In this paper,a broadband stealth radome is presented. The broadband transmission characteristic of radome is realized by using A sandwich structure,and the low radar cross section(RCS) characteristic is realized by further designing the shape of the transmission area of radome. Its RCS is close to -40 dBsm in X and Ku bands. It can be used to control the scattering characteristics of the antenna on the stealth platform.