常州工学院学报
常州工學院學報
상주공학원학보
JOURNAL OF CHANGZHOU INSTITUTE OF TECHNOLOGY
2013年
5期
20-24
,共5页
矩形波导%特异材料%色散曲线%表面模
矩形波導%特異材料%色散麯線%錶麵模
구형파도%특이재료%색산곡선%표면모
rectangular waveguide%metamaterial%dispersion curve%surface mode
基于马卡提里假设,推导了特异材料为外包层的矩形波导的模式特征方程。对外包层为ENG材料的矩形波导的Exmn模研究表明,这种波导不仅支持横向振荡导模的存在,还支持x轴向上表面模的存在(当m=1,2时)。同时还发现,随着阶数m或n的增大,不同Exmn模的色散曲线均向高频方向移动。绘制了各模式的空间电磁场分布,发现横向表面模的存在,使其电场能量主要局域在界面处,这些特性均异于常规材料矩形波导。
基于馬卡提裏假設,推導瞭特異材料為外包層的矩形波導的模式特徵方程。對外包層為ENG材料的矩形波導的Exmn模研究錶明,這種波導不僅支持橫嚮振盪導模的存在,還支持x軸嚮上錶麵模的存在(噹m=1,2時)。同時還髮現,隨著階數m或n的增大,不同Exmn模的色散麯線均嚮高頻方嚮移動。繪製瞭各模式的空間電磁場分佈,髮現橫嚮錶麵模的存在,使其電場能量主要跼域在界麵處,這些特性均異于常規材料矩形波導。
기우마잡제리가설,추도료특이재료위외포층적구형파도적모식특정방정。대외포층위ENG재료적구형파도적Exmn모연구표명,저충파도불부지지횡향진탕도모적존재,환지지x축향상표면모적존재(당m=1,2시)。동시환발현,수착계수m혹n적증대,불동Exmn모적색산곡선균향고빈방향이동。회제료각모식적공간전자장분포,발현횡향표면모적존재,사기전장능량주요국역재계면처,저사특성균이우상규재료구형파도。
Based on the Marcatili hypothesis, general mode Eigen equation of the rectangular waveguide with metamaterials as the cladding mode was deduced.Research on the Exmn mode of the rectangular waveguide with ENG materials as the cladding mode shows that, this waveguide supports not only the existence of transverse oscillation guided modes,but also supports the existence of the surface modes on the x-axis(m=1,2).With the order m or n increasing,different dispersion curves of Exmn modes moved to higher frequencies.Finally,the spatial field distribution of each mode was drawn,and we find due to the existence of the transverse surface modes,the energy of electrical field mainly localized at the interface. These characteristics are different from the rectangular waveguide of conventional materials.