Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Reexamination Certificate
2008-04-29
2008-04-29
Jones, Stephen E. (Department: 2817)
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
C333S001100
Reexamination Certificate
active
07365616
ABSTRACT:
A non-reciprocal element with three central conductors and a communication apparatus are disclosed, in which the insertion loss is small and the bandwidth is wide. Three central conductors are arranged in proximity to a ferrite thin plate in such a manner as to cross each other in a mutually electrically insulated state. A static magnetic field is applied to the ferrite thin plate by a permanent magnet. An end each of the three central conductors makes up three input/output terminals, respectively, and the other end thereof is connected to a common portion. Three matching capacitors are connected between an end each of the three input/output terminals, respectively, and the common portion. At least one of the angle between the first and second central conductors and the angle between the second and third central conductors is not more than 90 degrees.
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Ichikawa Koji
Mikami Hideto
Takeda Shigeru
Antonelli, Terry Stout & Kraus, LLP.
Hitachi Metals Ltd.
Jones Stephen E.
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