CAJ | 학술논문

针对双频微带天线的带内雷达散射截面减缩问题，提出了一种加载型微带天线。通过在贴片周围加载吸波超材料，天线的带内雷达散射截面得到有效减缩。该超材料吸波体仅由两层金属及其中间的有耗介质组成，底面金属不刻蚀，顶面由双环方形贴片组成。仿真结果表明：当天线周围加载吸波材料后，在保持天线辐射性能基本不变的情况下，双频带的雷达散射截面分别获得8.0dB和5.5dB的减缩。
침대쌍빈미대천선적대내뢰체산사절면감축문제，제출료일충가재형미대천선。통과재첩편주위가재흡파초재료，천선적대내뢰체산사절면득도유효감축。해초재료흡파체부유량층금속급기중간적유모개질조성，저면금속불각식，정면유쌍배방형첩편조성。방진결과표명：당천선주위가재흡파재료후，재보지천선복사성능기본불변적정황하，쌍빈대적뢰체산사절면분별획득8.0dB화5.5dB적감축。
To solve the problem of dual-band microstrip antenna with the radar cross section re-duction, a loaded microstrip antenna is proposed. By loading absorbing matamaterial around the patch, the in-band RCS of the antenna is effectively reduced. The metamaterial absorber is only composed of two metallic layers separated by a lossy dielectric spacer. The top layer consists of double loop square patch and the bottom one is of a solid metal. Compared to the reference an-tenna, the simulated results show that the radiation performance of the antenna is unchanged when the absorbing metamaterial is used, and at the same time, at two operating frequencies, the simulated RCS of the antenna with metamaterial absorber are reduced 8 dB and 5 . 5 dB re-spectively.