| 摘要 |
PURPOSE: A package structure of a multi-band surface acoustic wave filter is provided to prevent an RF(Radio Frequency) feed-through by forming SAW(Surface Acoustic Wave) filters having two or more characteristics within one package. CONSTITUTION: A package(50) emits an internal heat to protect internal circuits and performs a connecting function with external circuits. Two SAW filters(51,52) having two or more passing bands(51,52) are installed on a filter die(53) within the package(50). A metal bar(54) is installed the center portion of the filter die(53). The metal bar(54) is located between the SAW filters(51,52) in order to intercept an RF feed-through. A wire(56) is used for connecting a multitude of pad(55) installed at the SAW filters(51,52) and the package(50). |
