Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type
Patent
1988-05-31
1989-08-08
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Nonreciprocal gyromagnetic type
333238, H01P 1387
Patent
active
048556947
ABSTRACT:
A lumped element circulator comprises a dielectric substrate having a conductive layer on an upper center portion of its upper surface and a lower conductive layer entirely on its lower surface. A conductive pedestal frame structure is soldered to the upper conductive layer of the dielectric substrate on the outer periphery of a ferromagnetic substrate secured to the upper conductive layer of the dielectric substrate. Capacitors are mounted in recesses formed on the pedestal frame structure. A plurality of overcrossing parallel conductive strip lines extend in pairs across the ferromagnetic substrate with 120 degrees angular separation at their centers. One end of each strip line pair is short-circuited by a terminating conductor located substantially on the same horizontal plane as the upper electrodes of the capacitors and connected thereto, allowing them to be interconnected by short connecting leads and further to input/output ports. The other end of each strip line pair is short-circuited by a second terminating conductor which is connected by a short connecting lead to the upper surface of the pedestal frame structure.
REFERENCES:
patent: 3551853 (1970-12-01), Konishi
Gensler Paul
NEC
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