| 摘要 |
PROBLEM TO BE SOLVED: To obtain proper transmission characteristics by suppressing undesired spuriousness caused by a ground electrode and an external shape of a chip body. SOLUTION: A resonator electrode 3 is disposed inside a rectangular plate-shaped chip body 2 having an upper surface, a lower surface, a pair of side surfaces, and facing first and second end surfaces. There are provided an input electrode 6 and output electrode 7, coupled or connected with the resonator electrode 3 and extending vertically, and a ground electrode 10 provided on the chip body 2 so as to constitute a cylindrical part surrounding the resonator electrode 3. The input electrode 6 and an output electrode 7 are disposed, such that they are not electrically connected with the ground electrode 10 at the end of the cylindrical part or inside the same. There are further provided an electrode part, arranged in close vicinity to both sides of the input electrode 6 and/or the output electrode 7 and disposed on the pair of side surfaces of the chip body 2 of the ground electrode 10; and pairs of second ground electrodes 11 to 14, disposed in parallel with the input electrode 6 and the output electrode 7 and electrically connected to the ground electrode 10. COPYRIGHT: (C)2008,JPO&INPIT
|
