Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Patent
1998-08-10
2000-10-10
Gensler, Paul
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
333 11, H01P 136
Patent
active
061305871
ABSTRACT:
An isolator/circulator can keep a size of a 3-way asymmetric propeller resonator and intensity of magnetism, control the preferred frequency, and improve the insertion loss and isolation characteristic due to reducing the ferrite usage region on the maximum, extend the wide band without the external wide band extension, finally to miniaturize, reduce the fabricating cost by means of a simple fabrication. A microstrip/stripline isolator/circulator having a propeller resonator can be used for the device protection and impedance matching of a system and terminal in a transfer communication, personal communication, CT and satellite communication.
REFERENCES:
patent: 3513413 (1970-05-01), Nakahara et al.
patent: 3617945 (1971-11-01), Nakahara et al.
patent: 3935548 (1976-01-01), Rosenbaum et al.
patent: 4761621 (1988-08-01), Kane et al.
Circulators Using Planar Triangular Resonators; Joseph Helszajn; David S. James and W. Terence Nisbet; 1979.
Circulators Using Planar WYE Resonators; Joseph Helszajn and W. Terence Nisbet; 1981; pp. 689-699.
Characteristics of Circulators Using Planar Triangular and Disk Resonators Symmetrically Loaded with Magnetic Ridges; Joseph Helszajn; Reinhard D. Baars and W. Terence Nisbet; 1980; pp. 616-621.
Choy Tae Goo
Jun Dong Suk
Kim Meyung Soo
Koo Bon Hee
Lee Chang Hwa
Electronics and Telecommunications Research Institute
Gensler Paul
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