Patent ID: 6965276

Claim:
A two-port isolator comprising: a permanent magnet; a ferrite to which a DC magnetic field is applied by the permanent magnet; a first center electrode disposed on the surface of the ferrite or inside the ferrite, one end of the first center electrode being electrically connected to a first input-output port and the other end of the first center electrode being electrically connected to a second input-output port; a second center electrode disposed on the surface of the ferrite or inside the ferrite and intersects with the first center electrode in an electrically insulated state, one end of the second center electrode being electrically connected to the second input-output port and the other end of the second center electrode being electrically grounded; a first matching capacitor electrically connected between the first input-output port and the second input-output port; a resistor electrically connected between the first input-output port and the second input-output port; and a series resonant circuit, including a second matching capacitor and an inductor, electrically connected between the second input-output port and ground.