MODAL ANALYSIS OF BI–ISOTROPIC H-Guides

Abstract

Abstract-Using a building block approach which combines a transverse resonance method with a mode-matching technique, a rigorous analysis of a lossless bi-isotropic H-guide is presented. First, the modal equation of a parallel-plate waveguide containing the inner medium of the H-guide is obtained. Then, a mode matching technique is used to develop a full-wave analysis of the H-guide. The influence of nonreciprocity on the guidance properties of the structure is discussed.

Experimental and Theoretical Studies of a Broadband Superluminality in Fabry-Perot Interferometer

“…The conversion between high-order modes and the TE 10 mode modifies the magnitudes of transmission ( √ T and √ T ) and reflection ( √ R and √ R ) coefficients of the fundamental propagating wave (TE 10 ), as well as induces the extra phase changes (φ t , φ t , φ r , and φ r ) during the transmission and reflection processes. Such phenomenon is called the modal effect [27][28][29][30][31]. In this study, the regions I and III are WR-284 waveguides with a width of 2.84 inches (a = 72.14 mm) and a height of 1.34 inches (b = 34.04 mm).…”

“…These values are calculated using the modal analysis [27][28][29][30][31]. The round-trip phase change (2kL + 2φ r with L = 10 cm) is illustrated in (d).…”

“…Notably, the discontinuities of the undersized/oversized waveguide will excite high-order evanescent modes in addition to the fundamental mode, which is called the modal effect. The importance of the modal effect had long been noted [11][12][13][27][28][29][30][31], but its effect and extended application on the superluminality has never been studied.…”

Optimization of the E-Plane Loaded Rectangular Waveguide for Low-Loss Propagation

“…1, boundary conditions state that E z must vanish on the upper and lower metallic walls (y = 0 and y = h) and on the lateral metallic walls (x = 0 and x = w). If boundary conditions are only applied on the upper and lower walls, the solution can be expressed as: (9) where A (r) and B (r) are constants, k y = nπ/h and k (r) x are determined for each region applying continuity conditions at the interface between the different regions [18][19][20] and boundary conditions at outer lateral metallic walls. Constants k (r) x are related to k y , β (the propagation constant) and k as: In region r = 1, the boundary condition E z = 0 must be enforced at x = 0.…”

Modal Analysis of Metal-Stub Photonic Band Gap Structures in a Parallel-Plate Waveguide

“…This work presents a theoretical analysis of metal-stub PBG structures based on multiple-scattering [25][26][27] and modal analysis methods [28][29][30][31]. A PBG structure in the low terahertz region (Wband, 75-110 GHz) [11] is also exemplified to verify the theoretical prediction accuracy.…”