| 摘要 |
A frequency tunable filter capable of performing tuning of a plurality of resonators at the same time is provided to secure wide tuning range by forming a bottom surface of a metal tuning element and a top surface of a resonator into a tapered shape. A frequency tunable filter comprises a resonator(408), a sliding member(414), a metal tuning element(430), and a ground member. The resonator is loaded on a cavity. The metal tuning element is coupled in a bottom of the sliding member corresponding to the resonator. At least one among a top surface of the resonator and a bottom surface of the metal tuning element has a tapered shape. A tapered direction of the bottom surface of the metal tuning element is identical or is different to a tapered direction of the top surface of the resonator. The ground member is positioned on a top of the sliding member, and is contacted with the metal tuning element. |
