Electromagnetic Waves in Waveguides with Wall Impedance
- 1 September 1962
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 10 (5) , 314-320
- https://doi.org/10.1109/tmtt.1962.1125519
Abstract
A variational expression for the propagation constant of the waves in waveguides with inhomogeneous media and with wall impedance is presented. Using this expression, the shift of the propagation constant due to the wall impedance is calculated. It is also clarified how the removal of degeneracy takes place. Then the same problem is discussed using another approach, a perturbation method. The result is identical with that of the variational principle, as is to be expected. In the final section, taking degenerate TEM modes as an example, it is shown that appropriate choices of field configuration are necessary when the formula for an attenuation constant derived from the conservation of energy is applied to degenerate modes.Keywords
This publication has 2 references indexed in Scilit:
- PROPAGATION OF ELECTROMAGNETIC WAVES IN CYLINDRICAL WAVE-GUIDES WITH IMPERFECTLY CONDUCTING WALLSThe Quarterly Journal of Mechanics and Applied Mathematics, 1954
- Waves on Inhomogeneous Cylindrical StructuresProceedings of the IRE, 1952