Multi-mode cavity for waveguide filters, including an elliptical

Details Multi-mode cavity for waveguide filters, including an elliptical Multi-mode cavity for waveguide filters, including an elliptical

1996-12-26

1998-09-08

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333212, H01P 1208

Patent

active

058050353

ABSTRACT:
The cavity has at least one waveguide segment with elliptical cross section whose axes are arranged at a given inclination angle (.alpha.) with respect to the polarization of the incident TE field. Thus a dual-mode cavity is realized, with the ability to let resonate two transverse fields (TE) with polarization planes orthogonal to each other. By adding a waveguide element able to introduce a non-axial discontinuity, a triple-mode cavity is obtained, allowing for an additional longitudinal mode to resonate as well.

REFERENCES:
patent: 2424267 (1947-07-01), Carter
patent: 3235822 (1966-02-01), De Loach
patent: 4513264 (1985-04-01), Dorey
patent: 4734665 (1988-03-01), Rosenberg
Kuhn, "Microwave bandpass filters . . . 1-dimensional offsets", Circuit theory & applications, vol. 6, No. 1, pp. 13-29, Jan. 1978.

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