CAJ | 학술논문

提出了点源嵌入正折射率介质板进行亚波长成像的新方法,分析了位于负折射率媒质里的正折射率介质板内外的电压倏逝波和电压传播波分布.正和负折射率媒质分别由2维未加载传输线和2维加载电感、电容传输线网络组成.微波电路和数值仿真结果都显示由于板内增大的倏逝场,在正折射率介质板的两个界面附近出现了很大的电压幅度,该结果证实了该正折射率介质板透镜能够恢复电压倏逝波,从而提高像的分辨率.
제출료점원감입정절사솔개질판진행아파장성상적신방법,분석료위우부절사솔매질리적정절사솔개질판내외적전압숙서파화전압전파파분포.정화부절사솔매질분별유2유미가재전수선화2유가재전감、전용전수선망락조성.미파전로화수치방진결과도현시유우판내증대적숙서장,재정절사솔개질판적량개계면부근출현료흔대적전압폭도,해결과증실료해정절사솔개질판투경능구회복전압숙서파,종이제고상적분변솔.
A novel approach for subwavelength imaging is proposed using a positive-refractive-index(PRI) media slab lens excited by an embedded source.Both evanescent wave and propagating voltage wave distribution are analyzed inside and outside a PRI media slab,which is surrounded by a negative-refractive-index (NRI) material.The PRI and NRI materials consist of two -dimensional unloaded transmission line(TL) and inductor,capacitor (L,C) loaded TL networks,respectively.The microwave-circuit simulation and numerical simulation results show that there is strong voltage amplitudes near the two interfaces of the slab due to the growth of evanescent field in the slab.The results confirm that evanescent waves are restored at the focus by the proposed PRI TL lens,thus enhancing the resolution of the image.