| 摘要 |
PURPOSE: An isolated structure of reflective wave of a surface acoustic wave filter(SAW) is provided to simplify the manufacturing process of the SAW filter to previously block the reflective wave generated at the SAW filter. CONSTITUTION: An isolated structure of reflective wave of a surface acoustic wave filter includes an input interdigital transducer(IDT)(31), an output IDT(33), a ground member(32) formed between the input IDT(31) and the output IDT(33) for removing the noise and a plurality of metal bars(40,50) in the form of wave. The input IDT(31) converts the external electrical signal into a mechanical signal and the output IDT(33) converts the mechanical signal into an electrical signal. In the plurality of the metal bar(40,50), the side vertical to the traveling direction of the reflective wave does not exist so as to block the reflective wave generated from the input IDT(31) and the output IDT(33) at both sides of the input IDT(31) and the output IDT(33). |
