Patent ID: 8427253

Claim:
A nonreciprocal device comprising: a first carrier plate made of metal; a first ferrite substrate provided on a front surface of the first carrier plate; a first Y junction-shaped line provided on the first ferrite substrate, and including three branch lines; first, second and third lines provided on the first ferrite substrate, and respectively connected to the three branch lines of the first Y junction-shaped line; fourth and fifth lines provided on the first ferrite substrate; a first spacer provided on the first Y junction-shaped line, and made of an insulator; a first permanent magnet provided on the first spacer; a second carrier plate provided on a back surface of the first carrier plate, and made of metal; a second ferrite substrate provided on the second carrier plate; a second Y junction-shaped line provided on the second ferrite substrate, and including three branch lines; sixth, seventh and eighth lines provided on the second ferrite substrate, and respectively connected to the three branch lines of the second Y junction-shaped line, one of the sixth, seventh and eighth lines being connected to one of the first, second and third lines, the other two of the sixth, seventh and eighth lines being respectively connected to the fourth and fifth lines; a second spacer provided on the second Y junction-shaped line, and made of an insulator; and a second permanent magnet provided on the second spacer.