Three-port lumped-element circulator comprising bypass conductor

Details Three-port lumped-element circulator comprising bypass conductor Three-port lumped-element circulator comprising bypass conductor

1977-12-21

1979-11-13

Gensler, Paul L.

Wave transmission lines and networks

Plural channel systems

Nonreciprocal gyromagnetic type

333238, H01P 138

Patent

active

041745060

ABSTRACT:
An assembly of lumped-element conductors of a three-port circulator comprises those three first conductors connected to one another and to the ports and those three second conductors connected to the respective points of connection between the first conductors which are arranged on a principal surface of at least one magnetically stationarily biased ferrimagnetic piece so as to have a threefold axis of rotational symmetry passing perpendicularly of the principal surface through a point predetermined on the surface with the second conductors extended on the predetermined point and within an area enclosed with the first conductors. Preferably the area enclosed with the first conductors is an equilateral triangle. The second conductors are either connected between the apices of the triangle with the center of gravity or extended along the median lines. A conductor plate to which the ports are connected through capacitors and a dielectric plate are interposed between the other principal surface of the ferrimagnetic piece and a ground conductor. Alternatively, a common area of the second conductors that is situated on the predetermined point is electrically connected through the ferrimagnetic piece to the ground conductor that is placed directly on the other principal surface and connected to the respective ports through capacitors. A control circuit may be connected between the ground conductor and ground.

REFERENCES:
patent: 3538459 (1970-11-01), Knerr
patent: 3605040 (1971-09-01), Knerr et al.
patent: 3836874 (1974-09-01), Maeda et al.
patent: 3895320 (1975-07-01), Kafoh

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