针对特定布局的P 波段到Ka 波段的多波段合成孔径雷达天线的复杂构型,提出了一种大型超宽带拼装式天线罩的设计方法,能够满足多个不同频段天线大倾角内入射的宽频段高效透波。根据多波段合成孔径雷达天线的不同分布位置和频段,设计相应的不同介电常数组合的多层天线罩结构作为透波区域,并将其拼装为完整的大型天线罩构型。针对原定布局的多波段合成孔径雷达天线在相应工作状态下进行激励,对根据该方法制造的天线罩的透射系数进行测试,结果表明天线罩能够在超宽频带内高效透波,满足实际要求,实现了该布局下的多波段合成孔径雷达天线的大型超宽带拼装式天线罩设计。

An ultra-wideband radome design method is proposed for the complex configuration of multi-band synthetic aperture radar antennas with specific layout from P-band to Ka-band,which can meet the wideband efficient transmission for multiple antennas in different frequency bands with high inclination angles. According to the different layouts and frequency bands of the multi-band synthetic aperture radar antennas, a large assembled multi-layered radome with different permittivity combinations as the transmission areas is designed. The transmission coefficient of the radome manufactured by the proposed method is tested for the original layout of the multi-band synthetic aperture radar antenna under corresponding working conditions, and the results show that the radome would allow waves to penetrate efficiently in the ultra-wide band and fulfill the design requirements.

TN957.2

国家重大科技基础设施资助项目(发改办高技[2014]992号)