New, interesting modal properties are presented for the waveguiding structure consisting of a rectangular-section dielectric rod sandwiched between parallel conducting plates, which can represent either a nonradiative dielectric (NRD) guide or an H guide. A rigorous quantitative analysis of the dispersion properties, making use of both wavenumber and steepest-descent plots, indicates that higher-order modes can show different anomalous behaviors, as geometrical and electromagnetic parameters vary. A discussion of the physical nature of the waves related to complex wavenumbers allows us to illuminate the performance differences between NRD and H-guides, as regards certain previously unexplored leakage effects.
Properties of NRD-guide and H-guide higher-order modes: physical and nonphysical ranges / C., DI NALLO; Frezza, Fabrizio; Galli, Alessandro; Lampariello, Paolo; A. A., Oliner. - In: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. - ISSN 0018-9480. - 42:(1994), pp. 2429-2434. [10.1109/22.339777]
Properties of NRD-guide and H-guide higher-order modes: physical and nonphysical ranges
FREZZA, Fabrizio;GALLI, Alessandro;LAMPARIELLO, Paolo;
1994
Abstract
New, interesting modal properties are presented for the waveguiding structure consisting of a rectangular-section dielectric rod sandwiched between parallel conducting plates, which can represent either a nonradiative dielectric (NRD) guide or an H guide. A rigorous quantitative analysis of the dispersion properties, making use of both wavenumber and steepest-descent plots, indicates that higher-order modes can show different anomalous behaviors, as geometrical and electromagnetic parameters vary. A discussion of the physical nature of the waves related to complex wavenumbers allows us to illuminate the performance differences between NRD and H-guides, as regards certain previously unexplored leakage effects.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
