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    • 10. 发明授权
    • Acoustic surface wave device
    • 声表面波装置
    • US6037698A
    • 2000-03-14
    • US615144
    • 1996-03-14
    • Masanori UedaYoshiro FujiwaraTakumi Kooriike
    • Masanori UedaYoshiro FujiwaraTakumi Kooriike
    • H03H9/25H03H9/05H03H9/64H03H9/10
    • H03H9/1071H03H9/058H03H9/64H01L2224/48091H01L2224/48227H01L2924/16195
    • This invention relates to an acoustic surface wave device suitably used in a high-frequency circuit, in which high attenuation characteristics are provided.The present invention includes an acoustic surface wave element, a ceramic package having a ceramic substrate of a multi-layer structure, the ceramic substrate having a die-attach portion on which the acoustic surface wave element is mounted, the ceramic package having an input terminal and an output terminal connected to the acoustic surface wave element, the ceramic package having an opening located above the ceramic substrate, each of the input terminal and the output terminal having a ground terminal, and a metallic cap sealing the opening of the ceramic package. The metallic cap is electrically connected to one of the ground terminal of the input terminal and the ground terminal of the output terminal.
    • 本发明涉及适用于提供高衰减特性的高频电路中的声表面波装置。 本发明包括声表面波元件,具有多层结构的陶瓷基片的陶瓷封装体,陶瓷基片具有安装声表面波元件的管芯附着部分,陶瓷封装具有输入端子 以及连接到所述声表面波元件的输出端子,所述陶瓷封装具有位于所述陶瓷基板上方的开口,所述输入端子和所述输出端子中的每一个具有接地端子,以及密封所述陶瓷封装的开口的金属盖。 金属盖电连接到输入端子的接地端子和输出端子的接地端子之间。