| 摘要 |
PROBLEM TO BE SOLVED: To provide a resonator that is applicable to plural frequency bands and has temperature stability, and a filter using the same.SOLUTION: A resonator 10 has an outer conductor 12 having a cavity 11 formed therein, and an inner conductor 13 provided in the cavity 11 of the outer conductor 12. The inner conductor 13 has a moving body 133 which is provided to project into the cavity 11, a tip portion 131 which is a different member from the moving body 133 and covers the tip of the moving body 133 which projects into the cavity 11, and a support rod 132 which is a rod-like member disposed in the moving body 133, provided so that one end side thereof is fixed to the tip portion 131 and the other end side thereof is fixed to the moving body 133, and has a lower thermal expansion coefficient than the moving body 133.SELECTED DRAWING: Figure 3 |
