Electromagnetic Waves in Metal Tubes Filled Longitudinally with Two Dielectrics
- 1 September 1944
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 66 (5-6), 118-130
- https://doi.org/10.1103/physrev.66.118
Abstract
The propagation of e-m waves is investigated: (1) in a rectangular metal tube half-filled longitudinally with a dielectric; (2) in a cylindrical dielectric guide of radius , surrounded by a coaxial metal tube of radius . In (1) the waves are of the longitudinal-section type; for high frequencies they are confined to the medium of higher dielectric constant. The problem is discussed also with the model of the criss-cross component waves. In (2) the waves are linear combinations of and waves. The case of axial symmetry is considered, in which there are simple and waves. For a critical wave-length exists, depending only on the dimensions of the inner dielectric, and on the dielectric constants, below which the system behaves more or less as a dielectric guide in free space, and above which as an ordinary hollow tube. For this critical wave-length depends also on the ratio . The case in which the external medium has a higher dielectric constant is also briefly investigated.
Keywords
This publication has 5 references indexed in Scilit:
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