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The conjugately characteristic impedance transmission lines (CCITLs) implemented by lossless periodic transmission-line (TL) structures can exhibit active characteristic impedances (negative characteristic resistances). In this case, the magnitude of the voltage reflection coefficient is always greater than or equal to unity for passive load terminations. Due to complicated equations involved with...
In this paper, time-domain finite-element beam propagation method (TD-FE-BPM) using polygonal elements is presented for the analysis of 2D photonic crystal waveguides in order to reduce the unknown in system equations. The performance of the proposed method is compared with the TD-FE-BPM using all the triangular elements. The computation results of the pulse propagation along straight photonic crystal...
In this paper, it is proposed to compute the full far-field from the full near-field data by using integral equation based on Clifford algebras. This method can be used to solve directly the Maxwell's equation based on Clifford algebras (Dirac equation) since the key tool is the fundamental solution of them. The formulation of this method is structured in the form Clifford arithmetic and the results...
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