Wave transmission lines and networks – Wave mode converters
Patent
1990-04-03
1992-01-21
Laroche, Eugene R.
Wave transmission lines and networks
Wave mode converters
333 34, H01P 116
Patent
active
050830996
ABSTRACT:
A field-twisting waveguide junction (20) for electromagnetic microwaves (S1) has a rectangle-like cross-section at one end (21) thereof. This cross-section deviates from a true rectangular shape, by virtue of an inwardly projecting ridge (22). The other end (23) of the junction (20) has a rectangular cross-sectional shape, and the cross-section of a central section (F-F) of the junction has an L-shape. The junction (20) comprises sections, in the illustrated embodiment six sections, the cross-sectional shapes of which are changed step-wise between the sections. The width direction (B2) of the rectangular cross-section (23) has the same directional sense as the height direction (h1) of the inwardly projecting ridge (22). The junction (20) is intended for connecting a rectangular waveguide to a ridge waveguide and transfer the microwaves (S1). The microwave has an electrical field vector (E) whose direction is rotated through one-quarter of a revolution during transfer of the microwave.
REFERENCES:
patent: 2802991 (1957-08-01), Coale
patent: 3157845 (1964-11-01), White
patent: 4620163 (1986-10-01), Young
patent: 4673946 (1987-06-01), Hoover
Mantysalo et al; "A Double Ridged Tapered Waveguide Transition for Liquid Helium Crystat"; 4th Int'l Cyrogenic Engineering Conf.; Eindhoven, Netherlands; 24-26 May 1972; pp. 351-353.
LaRoche Eugene R.
Lee Benny
Telefonaktiebolaget L M Ericsson
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