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Theoretical Study of Variation of Propagation Constant in a Cylindrical Waveguide Due to Chirality: Chiro-Phase Shifting
Departmental Papers (ESE)
  • Mamdouh M. I. Saadoun, Saudi Consolidated Electric Company
  • Nader Engheta, University of Pennsylvania
Document Type
Journal Article
Date of this Version
Copyright 1994 IEEE. Reprinted from IEEE Transactions on Microwave Theory and Techniques, Volume 42, Issue 9, September 1994, pages 1690-1694.

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We discuss a conceptual idea for a reciprocal phase shifting using chiral materials. Such phase shifters, which can be called chiro-phase shifers, may, in principle, consist of a general cylindrical waveguide in which a thin chiral rod is inserted longitudinally. A standard commonly used perturbation technique is utilized to analyze theoretically the effects of a chiral rod's parameters (and in particular its chirality admittance) on propagation constants of guided modes in such waveguides. A simple expression relating the relative change of propagation constants to other relevant quantities such as polarization characteristics of unperturbed guided modes, material parameters of chiral rod, and location of the rod is presented, and the case of a circular metallic chiro-phase shifter is discussed in some detail. Physical insights into the results are also provided.

Citation Information
Mamdouh M. I. Saadoun and Nader Engheta. "Theoretical Study of Variation of Propagation Constant in a Cylindrical Waveguide Due to Chirality: Chiro-Phase Shifting" (1994)
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