METHOD WHICH IMPLEMENTS A CAPACITOR IN A SURFACE ACOUSTIC WAVE FILTER, CAPABLE OF MINIATURIZING THE SAW FILTER BY IMPLEMENTING A CAPACITOR AND A SAW FILTER CHIP IN A SINGLE SUBSTRATE, AND A SAW FILTER THEREOF

摘要

PURPOSE: A method and a SAW filter thereof are provided to miniaturize a SAW filter by forming a SAW filter chip and a capacitor in a single substrate.;CONSTITUTION: A saw filter(100) comprises a capacitor(110) and a saw filter(120) for a filtering process, which an IDT(Inter Digital Transducer) electrode pattern in a direction different from the IDT electrode arrangement of a SAW filter resonator for a filtering process. The saw filter for a filtering process comprises a ladder type SAW filter and a DMS type SAW filter. Each IDT electrode is composed of a pair of comb electrodes.;COPYRIGHT KIPO 2011