RESONATOR DEVICE, OSCILLATOR, FILTER, DUPLEXER AND COMMUNICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a resonator device which obtains strong connection between a resonator and a transmission line without lowering the no-load Q of the resonator. SOLUTION: In this resonator device 10 formed by including a microstrip line 20 being as a transmission line consisting of a dielectric substrate 21, a main conductor 22 formed on the substrate 21 and an earth conductor 23 formed on the substrate 21 and a resonator 11 which is arranged in the neighborhood of the main conductor 22 of the microstrip line 20 and is electromagnetically combined with the microstrip line 20, slits 25 are formed on the main conductor 22 of the microstrip line 20 in the part where the conductor 22 is combined with the resonator 11 in a direction that is almost parallel to a signal propagation direction.