Coupling for two electromagnetic waveguides with different cross

Details Coupling for two electromagnetic waveguides with different cross Coupling for two electromagnetic waveguides with different cross

1997-04-17

1999-03-23

Gensler, Paul

Wave transmission lines and networks

Wave mode converters

333254, H01P 116, H01P 508

Patent

active

058865888

ABSTRACT:
A coupling is presented for coupling two electromagnetic hollow conductors (waveguides) with different cross-sectional shapes. The coupling includes steps (S1-S3) arranged sequentially in the axial direction, having an essentially rectangular cross section and rounded corners as well as different clearances. The dimensions of all steps (S1-S3) are purposely designed so that other modes in addition to the basic mode are able to propagate therein. Because of the dimensions of coupling (3), only modes intended to conduct signals propagate in the joined waveguides, while those which are not intended to conduct signals are essentially cancelled by superposition.

REFERENCES:
patent: 2531437 (1950-11-01), Johnson et al.
patent: 3019399 (1962-01-01), Lanciani et al.
patent: 3686589 (1972-08-01), Spinner et al.
patent: 3818383 (1974-06-01), Willis
patent: 4540959 (1985-09-01), Saad
patent: 4642585 (1987-02-01), Saad
patent: 4906951 (1990-03-01), Moeller
"Analysis of the Arbitrarily Shaped Waveguide by Polynomial Approximation," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-18, No. 12, Dec. 1970 pp. 1022-1028.
"Computer Optimization of Inhomogeneous Waveguide Transformers," IEE Transactions on Microwave Theory and Techniques, vol. MTT017, No. 8, Aug. 1969, pp. 563-571.

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