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    SAW resonator(Éù²¨±íÃæÕñµ´Æ÷)Ïêϸ½éÉÜ

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      ¾§Ìå²úÆ·ÓÐÁ½ÖÖÐÎʽ£º¾§Ìåµ¥Ôª(Crystal Unit,Ë׳ÆÎÞÔ´¾§Õñ)ºÍ¾§ÌåÕñµ´Æ÷(Oscillator£¬Ë׳ÆÓÐÔ´¾§Õñ)¡£¾§ÌåÕñµ´Æ÷Æäʵ¾ÍÊǾ§Ìåµ¥ÔªºÍ¸÷ÖÖ°ëµ¼ÌåIC×éºÏ¶ø³ÉµÄÄ£¿é£¬¾§ÌåÕñµ´Æ÷µÄÖ÷ҪƵÂÊÌØÐÔ¶¼È¡¾öÓÚÆäÄÚ²¿¾§Ìåµ¥Ôª¡£

      ¾§Ìåµ¥ÔªµÄÌØÐÔÈ¡¾öÓÚÇиÒÕ£¬Ö÷ÒªÓÐÈýÖÖ£º

      a) Òô²æÐÍ(Turning Fork)£ºÆµÂÊÖ÷ÒªÊÇKHz¼¶£¬±ÈÈç32.768KHz

      b) AT-CutÐÍ£ºÆµÂÊÖ÷ÒªÊÇMHz¼¶£¬±ÈÈç12MHz£¬26MHz£¬125MHzµÈ

      c) SAWÐÍ£ºÆµÂÊΪ°ÙMHzÉõÖÁGHz

      SAWÊÇSurface Acoustic WaveµÄËõд£¬³ÆÎªÉù²¨±íÃæÕðµ´Æ÷£¬ÆäÕð¶¯ÑØ×ž§Ìå»ùƬ±íÃæ´«²¥¡£Ò»¸öSAWÕðµ´Æ÷ÓÉÒ»¸öIDT(²æÖ¸Ê½»»ÄÜÆ÷Interdigital Transducer)ºÍ·´ÉäÆ÷×é³É¡£ÆäƵÂÊ(f)ÓÉÔ­ÁÏËÙ¶È(v)£¬ºÍIDT·ù¶È(¦Ë)¾ö¶¨¡£

      ¶¨Ò幫ʽÈçÏÂ:f = v/¦Ë f [MHz], v [m/s], ¦Ë [¦Ìm]

      ÀýÈ磺Material;Quartz ( v = 3,200 m/s), ¦Ë = 10 [¦Ìm] ? f = 320MHz

      SAWÐÍÕñµ´Æ÷Ó¦Óãº

      EpsonÌṩSAW(Éù²¨±íÃæ)Õðµ´Æ÷ºÍÂ˲¨Æ÷£¬ÓÃÓÚRF(É䯵)Ó¦Óá£SAWÕðµ´Æ÷±»ÓÃÓÚÆµÂʳ¬¹ý100MHzͨѶϵͳµÄÓ¦ÓÃÀ±ÈÈçÆû³µÒ£¿ØÔ¿³×(RKE)¡£

    ³£Óþ§Õñ¹æ¸ñ²ÎÊý£º

      Common frequency: ³£ÓÃÆµµã

      Frequency tolerance: ƵÂÊÎȶ¨¶È

      Actual package: ʵ¼Ê·â×°

      Supply voltage: ¹¤×÷µçѹ

      Motional resistance: ¶¯Ì¬×迹

      Load capacitance: ¸ºÔصçÈÝ

      Non linearity: ·ÇÏßÐÔ¶È

      Operating temperature: ¹¤×÷ζÈ

      Frequency range: ƵÂÊ·¶Î§

      Current consumption: µçÁ÷ÏûºÄ

      Output control: Êä³ö¿ØÖÆ

      Size (mm): ³ß´ç(mm)

      Detection range: ¼ì²â·¶Î§

      Scale factor: ±ÈÀýÒò×Ó

      Frequency / temperature characteristics: ƵÂÊ/ζÈÌØÐÔ

      Frequency/control range ƵÂÊ/¿ØÖÆ·¶Î§

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