| 摘要 |
The present invention relates to a cavity filter with a thermal compensating device. The cavity filter includes a housing and a cover forming a cavity; a resonance bar installed in the cavity formed by the cover and the housing; and a thermal compensating device which is installed in the lower surface of the cover in the cavity and designed to be made of a material with a predetermined length. The coefficient of thermal expansion of the thermal compensating device is different from that of the cover. Both ends of the thermal compensating device are fixed to the lower surface of the cover. |
