An Absorber-Wall Parallel-Plate Waveguide

The electromagnetic fields that can propagate through a parallel-plate waveguide having absorber walls are investigated, and it is shown that dominant TM/sup e//sub 10/ and TE/sup e//sub 10/ modes can propagate independently with both having a highly-tapered (cosine-type) transverse distribution, a...

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Veröffentlicht in:	IEEE transactions on microwave theory and techniques 1986-07, Vol.34 (7), p.761-766
Hauptverfasser:	Knop, C.M., Cheng, Y.B., Ostertag, E.L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bandwidth Circuit properties Dielectric constant Electric, optical and optoelectronic circuits Electromagnetic propagation Electromagnetic propagation in absorbing media Electromagnetic waveguides Electronics Exact sciences and technology Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Optical propagation Partial differential equations Performance analysis Region 2 Tellurium
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Beschreibung
Zusammenfassung:	The electromagnetic fields that can propagate through a parallel-plate waveguide having absorber walls are investigated, and it is shown that dominant TM/sup e//sub 10/ and TE/sup e//sub 10/ modes can propagate independently with both having a highly-tapered (cosine-type) transverse distribution, a phase velocity slightly exceeding the speed of light, and very low axial attenuation, especially for a wall-spacing large as compared to a free-space wavelength. In other words, such an absorber-guide acts life a corrugated waveguide having "lambda/4" teeth (balanced-hybrid mode) but it does so over virtually an unlimited bandwidth and with little sensitivity to the absorber's characteristics.
ISSN:	0018-9480 1557-9670
DOI:	10.1109/TMTT.1986.1133438