Ceramic structure and nonreciprocal circuit device

A ceramic structure comprising:

• ceramic sintered bodies having conductors on surfaces thereof and provided adjacent to each other at a predetermined interval between each other;
• and
• connecting members provided between the ceramic sintered bodies;
• wherein
• the connecting members are made of a pillar-shaped sintered metal and electrically and mechanically connect the ceramic sintered bodies adjacent to each other through conductors on surfaces thereof;
• and
• the ceramic sintered bodies having conductors on surfaces thereof include a first, a second, and a third ceramic substrate, the first ceramic substrate and the second ceramic substrate are laminated to each other with at least one of the connecting members interposed therebetween so that a predetermined space is present between the ceramic substrates, the first ceramic substrate and the third ceramic substrate are laminated to each other with at least one of the connecting members interposed therebetween so that a predetermined space is present between the first and second ceramic substrates, the second ceramic substrate and the third ceramic substrate are provided at one major surface side of the first ceramic substrate so as to face each other with a predetermined space interposed between the second ceramic substrate and the third ceramic substrate, and said one major surface of the first ceramic substrate and side surfaces of the second and the third ceramic substrates facing each other define a recess portion.