Tunable resonator and method of tuning the same

摘要

A resonator and method of tuning the same comprises at least one resonator wherein each resonator includes a tuning element coupled thereto. The tuning element may be physically attached to the resonator or may be positioned adjacent thereto. The tuning element is trimmed to change the frequency characteristic of the resonator by a slight amount. The width of the tuning element is less than the width of the resonator element of the microstrip filter so that trimming of the tuning element can be conducted with precision.