Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type
Patent
1986-07-29
1988-01-05
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Nonreciprocal gyromagnetic type
333 33, H01P 139
Patent
active
047178957
ABSTRACT:
A waveguide junction circulator for a high power application at a high operating frequency. The circulator includes a plurality of connecting waveguides, each of which has a standard height dimension corresponding to the operating frequency; a resonance cavity; a plurality of spaced and cooled, superposed metal plates covered with ferrite discs disposed in the cavity; a magnet disposed outside the cavity for generating a magnetic field oriented perpendicular to the ferrite discs and penetrating the cavity; and a plurality of junction arms each having one end communicating with the cavity and another end forming a connection with a respective one of the plurality of connecting waveguides. The circulator has a height dimension in its region penetrated by the magnetic field that is reduced by at least 20% compared to the standard height dimension of the connecting waveguides. Each connection presents a transition from the connecting waveguide to the junction arm that has a sudden change in cross section from the reduced height of the circulator to the standard height of the connecting waveguide. Reactance elements are provided in the junction arms to form multi-section filters.
REFERENCES:
patent: 3466571 (1969-09-01), Jansen et al.
patent: 3492601 (1970-01-01), Omori
patent: 4254384 (1981-03-01), Piotrowski et al.
Okada et al. A 100KW Waveguide Y-Junction Circulator for Microwave Power Systems at 915 Mhz Jrnl. of Microwave Pwr. Sep. 1977, pp. 201-207.
IEEE Transactions on Magnetics, vol. Mag-17, No. 6, Nov. 1981, pp. 2957-2960.
Hauth Wolfgang
Lenz Sigmund
Morz Gunter
Pivit Erich
ANT Nachrichtentechnik GmbH
Gensler Paul
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