Electronic component and filter including the same

A filter, comprising:

• a first piezoelectric thin film resonator;
• a second piezoelectric thin film resonator provided next to the first piezoelectric thin film resonator;
• each of the first piezoelectric thin film resonator and second piezoelectric thin film resonator being a piezoelectric thin film resonator that has a structure in which a piezoelectric thin film is interposed between a first electrode film and a second electrode film, that is constituted in an area where the first electrode film, the piezoelectric thin film, and the second electrode film overlap each other, and that obtains a signal with a predetermined resonance frequency by bulk waves propagating inside the piezoelectric thin film;
• an input electrode pad;
• an output electrode pad;
• a first wiring portion formed between the input electrode pad and the output electrode pad;
• and
• a second wiring portion formed between the first wiring portion and a ground electrode pad,
• wherein:
• the piezoelectric thin film of the first piezoelectric thin film resonator and the piezoelectric thin film of the second piezoelectric thin film resonator are continuous,
• a periphery of the first piezoelectric thin film resonator facing a periphery of the second piezoelectric thin film resonator includes a portion formed with an engrailed line or a curved line;
• the periphery of the second piezoelectric thin film resonator facing the periphery of the first piezoelectric thin film resonator comprises a portion formed with an engrailed line or a curved line which has a constant interval with respect to said engrailed line or curved line;
• one of the first piezoelectric thin film resonator and the second piezoelectric thin film resonator is electrically connected to the first wiring portion;
• the other of the first piezoelectric thin film resonator and the second piezoelectric thin film resonator is electrically connected to the second wiring portion;
• and
• the other of the first piezoelectric thin film resonator and the second piezoelectric thin film resonator has an anti-resonance frequency substantially equal to the resonance frequency of the one of the first piezoelectric thin film resonator and the second piezoelectric thin film resonator.