Patent ID: 8922304

Claim:
A laminated electronic device comprising: two or more wiring layers including a first wiring layer and a second wiring layer; an insulating layer interposed between said first wiring layer and said second wiring layer; a through conductor extending through said insulating layer to electrically connect a first conductor disposed on said first wiring layer to a second conductor disposed on said second wiring layer; and one or more resonators, wherein said through conductor includes a divergent section having a diameter which is gradually larger toward said first conductor, said divergent section being formed in one end portion of said through conductor, said one end portion serving as a connection to said first conductor, said through conductor includes an intermediate section having a substantially fixed diameter, and said divergent section being in a frusto-conical shape, said divergent section includes one end surface being continuous to said intermediate section and having a diameter substantially identical to the diameter of said intermediate section, said one end surface serving as a connection to said intermediate section, and another end surface having a diameter larger than the diameter of the one end surface, the diameter of the another end surface of said divergent section P is substantially equal to (2L+H), where H represents the diameter of said intermediate section, and L represents a height of said divergent section, and the through conductor is connected to the one or more resonators, whereby a Q-value of the one or more resonators is increased.