On the Mode and Square Correspondence Between Circular Multimode Tapered Waveguides
- 1 May 1967
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 15 (5) , 314-317
- https://doi.org/10.1109/tmtt.1967.1126458
Abstract
In an axially straight multimode circular waveguide taper excited with a pure TE/sup /spl circle// /sub 11/ dominant mode, the first and only converted mode at and near cutoff is the TM/sup/spl circle// /sub 11/ mode. It is shown that in an axially straight multimode square waveguide taper excited with a pure TE/sup/spl square// /sub 10/ dominant mode, the TM/sup/spl square// /sub 12/ mode corresponding to the TM/sup/spl circle// /sub 11/ mode in circular case is not the only first converted mode at and near cutoff. The overall behavior or coupling mechanism of waveguides is similar whether the waveguide is rectangular, square, circular, or elliptical: i.e., the overall coupling coefficient at cutoff of a converted mode or modes approaches an ininfinity of the order 0/sup -1/4/.Keywords
This publication has 3 references indexed in Scilit:
- Mode Conversion in Tapered Waveguides At and Near CutoffIEEE Transactions on Microwave Theory and Techniques, 1966
- Optimization of Waveguide Tapers Capable of Multimode PropagationIEEE Transactions on Microwave Theory and Techniques, 1961
- Circular Waveguide Taper of Improved DesignBell System Technical Journal, 1958