NON-RECIPROCAL CIRCUIT ELEMENT

PROBLEM TO BE SOLVED: To provide a non-reciprocal circuit element which increases broad width to all the ports, without spoiling the concept of the flat structure and a miniaturization. SOLUTION: The non-reciprocal circuit element is provided with: three central conductors 21, 22 and 23 which intersect in the insulated state mutually; a magnetic body arranged in the vicinity of the three central conductors; and a ground conductor connected common to the end of the three central conductors. While constituting three central conductors 21, 22 and 23 asymmetrically in order to obtain apparently the inductor inphase excitation, a capacitor for adjusting a characteristic value of inphase excitation is provided between a ground conductor 15 and the grounding, so that a series resonance circuit which operates only inphase excitation may be constituted with these inductors and the capacitors. COPYRIGHT: (C)2007,JPO&INPIT