Patent ID: 6020793
Filing Date: 2000-02-01
Classification: H01P

Abstract:
In combination, an input/output transmission line and a non-reciprocal circuit device, said non-reciprocal circuit device comprising:a plurality of central conductors arranged so as to mutually intersect; a magnetic substrate; said intersecting central conductors and said magnetic substrate being adapted to receive a d.c. magnetic field applied thereto;at least one ground terminal;a matching capacitor connected between a respective one of said central conductors and said at least one ground terminal; andan input/output terminal, and an inductor connected between said input/output terminal and at least one of said central conductors;further comprising a mounting base-member; said input/output transmission line being disposed thereon;wherein said input/output transmission line has an electrode-distribution capacitance;wherein said input/output terminal is connected to said input/output transmission line;wherein a low-pass filter is formed by said inductor, said electrode-distribution capacitance, and said matching capacitor connected to said input/output terminal; andwherein the value of said inductor or said matching capacitor is determined to obtain a desired input/output impedance of said non-reciprocal circuit device.