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Anisotropic Field Distributions in Left-Handed Guided Wave Electronic Structures and Negative Refractive Bicrystal Heterostructures

  • Clifford M. Krowne
Chapter
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 98)

Effect of anisotropy in the physical tensor description of the negative index of refraction material acting as a substrate is found on the electromagnetic field distributions. This is done for the case of a microstrip structure whose configuration is commonly used in microwave and millimeter wave integrated circuits. These ab initio studies have been done self-consistently with a computer code using a full-wave integral equation numerical method based upon a generalized anisotropic Green’s function utilizing appropriate boundary conditions. Field distributions are provided over two decades of frequency in the cross-section of the uniform guided wave structure, from 0.2 to 20 GHz. It is found that modifying the tensor can allow control because the wave changes volumetrically, or switches from volumetric to surface, in its distribution of fields. It has also been discovered that heterostructure bicrystal arrangements lead to field asymmetry in guided wave structures. A study is conducted over a range of nominal permittivity values to see if the effect is present in widely varying dielectric materials. Marked shifts of the field distribution occurs in some cases, and this can be the basis of an all electronic device that provides beam steering or a device that gives directional action. Such all electronic devices could be fixed or even constructed as control components using materials with electrostatically controllable permittivity. Distributions have been obtained to demonstrate the effect using an anisotropic Green’s function solver.

Keywords

Surface Wave Color Distribution Distribution Plot Nominal Case Beam Steering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Clifford M. Krowne
    • 1
  1. 1.Microwave Technology Branch Electronics Science and Technology DivisionNaval Research LaboratoryWashingtonUSA

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