| 摘要 |
An isolator includes center electrodes (51), (52), and (53) coupled in a high frequency manner with a ferrite member (41) to which a direct-current magnetic field is applied by a permanent magnet. The electrodes (51) and (53) do not intersect with each other, and intersect with the electrode (52) in a mutually insulated state. Connection is established so that a magnetic field generated when a current flows from one end (51a) to the other end of the electrode (51), and a magnetic field generated when a current flows from one end(53a) to the other end of the electrode (53) have the same phase and direction. A capacitor (C1) and a resistor (R1) are connected in parallel to the electrode (51), a capacitor(C2) is connected in parallel to the electrode (52), and a capacitor (C3) and a resistor(R2) are connected in parallel to the electrode(53). One end (51a) of the electrode (51) and the other end (53b) of the electrode (53) define balanced input ports, and the other end (51b) of the electrode (51), one end (52a) of the electrode (52), the other end (52b) of the electrode (52), and one end (53a) of the electrode (53) define balanced output ports.
|
