lhms

The influence of the electromagnetic parameter of material on the transmission of LHMs is studied experimentally .

实验研究了介质基板对LHMs左手特征透射峰影响。

We investigate the transmission and reflection properties of LHMs with the local asymmetry at X-band frequency range in free space .

采用空间法研究了非对称结构对LHMsX波段微波透射与反射行为的影响。

In the past ten years there has been ample proof for the existence of LHMs in the microwave frequency range .

过去十年，大量左手材料的工作频率都是在微波波段。

Because of their simple structures , LHTLs are most likely to be the most widely used form of LHMs .

由于结构简单可靠、容易实现，异向传输线是异向介质最有可能被广泛应用的形式。

On the basis of this research focus , we try to seek good terahertz LHMs . In this thesis , we propose a series of design schemes .

本论文正是基于这个研究重点，致力于寻求性能良好的太赫兹左手材料，提出了一系列的多通带左手材料的设计方案。

In the paper , FDTD is used to analyze the propagation properties of several T-junction waveguides , with left-handed materials ( LHMs ) .

采用FDTD数值方法分析计算了几种含有左手材料的T结波导的传输特性。

LHMs exhibit many unique electromagnetic properties , among which the most well-known is negative refraction . So , LHMs are also called as negative-index materials .

左手材料具有许多独特的电磁特性，其中最重要的是负折射，因此左手材料也被称为负折射率材料。

In this thesis , the applications of Left-handed Materials ( LHMs ) on the microstrip antennas are studied and the microstrip antennas with LHMs are designed .

本文研究了左手材料在微带天线中的应用，设计出新型的左手材料微带天线。

Presently , photonic crystals ( PCs ) and left-handed materials ( LHMs ) are hot research interests for they have intensively potential applications in the fields of optics and microwave .

光子晶体与左手媒质均是当前研究的热点，在微波与光学领域都有巨大的应用前景。

For electromagnetic waves propagating in such materials , the electric field E , magnetic field H and wave vector k form a left-handed triplet of vectors and so such materials are called LHMs .

电磁波在这样的材料中传播时，电场、磁场和波矢的方向成左手螺旋关系，所以这种材被称为左手材料。

The discovery of LHMs has been regarded as one of the ten most significant discoveries in science community in 2003 , and has been the front and focus area in physics and electromagnetics research .

LHMs的发现被美国《Science》杂志评为2003年度十大科技突破之一，是当前物理与电磁学研究领域中的前沿与热点问题。

Electromagnetic resonance of microwave LHMs in free space ( 1 ) . Electromagnetic resonance of a periodic array SRRs are studied in free space and negative permeability are realized in a certain frequency range .

3研究了微波段左手材料的空间电磁谐振行为（1）研究了周期性排列的金属开口谐振环的空间电磁谐振行为，实现了负磁导率。

The polarization phenomenon is also interesting when the electromagnetic wave incidents at the interface of the vacuum and the uniaxially anisotropic LHM or at that of two kinds of uniaxially anisotropic LHMs .

除此之外，本文还讨论了电磁波在单轴各向异性左手材料表面处以及两种单轴各向异性左手材料界面处发生的偏振现象。

In recent years , several methods have been proposed to realize left-handed materials ( LHMs ), and among them planar composite right / left-handed ( CRLH ) transmission line structures have shown their tremendous potential in microwave circuits and components design .

目前实现左手材料已有多种方法，其中平面复合左右手传输线结构在平面微波电路及元器件设计中表现出了非常大的潜力。

Because the group velocity and phase velocity of electromagnetic waves are in the opposite directions in LHMs , they have many strange properties , such as negative refraction , reversed Doppler shift , reversed Cherenkov radiation , perfect lens and so on .

左手材料中传播的电磁波的相速和群速相反，因而它有许多奇特现象，如负折射率，逆多普勒效应，逆Cherenkov辐射，完美透镜效应等。

However , the angular momentum density of multimode Laguerre – Gauss beam in a lossless LHM is always opposite to the transverse energy flow . Finally , we theoretically study the role of dispersion in propagation of rotating Hermite-Gaussian ( RHG ) beams in left-handed materials ( LHMs ) .

当考虑介质的损耗时多模拉盖尔-高斯光束的角动量密度方向可以平行或反平行于横向能流方向。最后，研究了左手介质的色散特性对旋转厄米-高斯光束的影响。