| 摘要 |
<p>Disclosed is a nonreciprocal circuit element that achieves broadband with insertion loss and isolation characteristics, and easily adjusts port unit impedance. A circulator has at least one-turn winding of a first, a second and a third center electrode (21), (22), (23) on ferrite (25) charged with a direct current field by a permanent magnet. Each of a first matching capacitor element (C1), (C2), (C3) is connected between ends of each center electrode (21), (22), and (23) and a ground. A second matching capacitor element (Cs1) is connected between a first port (P1) and the first center electrode (21); a second matching capacitor element (Cs2) is connected between a second port (P2) and the second center electrode (22); and a second matching capacitor element (Cs3) is connected between a second port (P3) and the third center electrode (23).</p> |
