°æȨËùÓÐ Copyright ?2010-2024 ÉîÛÚÊÐPGµç×Ó¹Ù·½ÍøÕ¾-PG ElectronicsÓÐÏÞ¹«Ë¾
ÔÁICP±¸11013512ºÅ-7 ÍøÕ¾µØͼ
ÎÞÏßÂó¿Ë·ç»ò³ÆÎÞÏß»°Í²£¬ÊÇ´«ÊäÉùÒôÐźŵÄÒôÏìÆ÷²Ä£¬ÓÉ·¢Éä»úºÍ½ÓÊÕ»úÁ½´ó²¿·Ö×é³É£¬Í¨³£³ÆΪÎÞÏßÂó¿Ë·çϵͳ¡£
·¢Éä»úÓɵç³Ø¹©µç£¬ßäÍ·½«ÉùÒôת»»ÎªÒôƵµçÐźţ¬¾¹ýÄÚ²¿µç·µÄ´¦Àíºó£¬½«°üº¬ÒôƵÐÅÏ¢µÄÎÞÏߵ粨·¢Éäµ½ÖÜΧµÄ¿Õ¼ä¡£
½ÓÊÕ»úÒ»°ãÓÉÊе繩µç£¬ÓɽÓÊÕÌìÏß½ÓÊÕµ½·¢Éä»ú·¢³öµÄÎÞÏߵ粨£¬¾¹ýÄÚ²¿µç·µÄ´¦Àí£¬ÌáÈ¡³öÒôƵÐźţ¬²¢Í¨¹ýÊä³öÐźÅÏßË͵½À©ÉùϵͳÖУ¬Íê³ÉÒôƵÐźŵÄÎÞÏß´«Ê䡣һ̨½ÓÊÕ»úÄÚͨ³£¿É°üº¬1Ìס¢2Ì×»ò4Ì×½ÓÊյ緣¬·Ö±ð½ÓÊÕ1Ö§¡¢2Ö§»ò4Ö§ÎÞÏßÂó¿Ë·çµÄÐźţ¬·Ö±ð±»³ÆΪ¡°Ò»ÍÏÒ»¡±¡¢¡°Ò»Í϶þ¡±»ò¡°Ò»ÍÏËÄ¡±»úÐÍ¡£ÆäÖÐÒÔÒ»Í϶þ»úÐÍ×îΪ³£¼û¡£
ÎÞÏßÂó¿Ë·çϵͳʵÖÊÉÏÊǵ¥ÏòʽÎÞÏßͨÐÅϵͳ¡£
Ƶ¶ÎÎÞÏßÂó¿Ë·çϵͳÊÇͨ¹ýÎÞÏߵ粨´«ÊäÉùÒôÐźŵÄÉ豸£¬¸ù¾ÝÎÞÏßÂó¿Ë·çÓë½ÓÊÕ»úÖ®¼äÊÕ·¢ÆµÂʵĸߵͣ¬¿É½«Æä»®·ÖΪ²»Í¬µÄƵ¶Î£¬Ò»°ã³£ÓÃFM¡¢VHF¡¢UHF¼¸¸öƵ¶Î¡£
FMƵ¶ÎÊÇÖ¸¹«¹²µ÷Ƶ¹ã²¥ËùÓõÄ88~108MHzƵ¶Î¼°Æ丽½üµÄƵ¶Î£¬Ò»°ãÖ»ÓÐһЩ¼òÒ×µÄÎÞÏßÂó¿Ë·ç²úÆ·²ÉÓøÃƵ¶Î¡£
VHFƵ¶Î£¬°´ÕÕ¹ú¼Ê±ê×¼µÄ»®·Ö£¬ÊÇÖ¸30~300MHzƵ¶Î£¬ÉÏÃæËùÊöµÄFMƵ¶ÎÆäʵ°üº¬ÔÚVHFƵ¶Î£¬Ö»ÊÇÓÉÓÚÆä½Ó½ü¹«¹²µ÷Ƶ¹ã²¥(¼ò³ÆFM)Ƶ¶Î£¬ËùÒÔ³ÆΪFMƵ¶Î¡£VHFƵ¶ÎÎÞÏßÂó¿Ë·ç¶à²ÉÓÃ170~260MHzƵ¶Î£¬ÓÖ³£³ÆΪVHF¸ß²¨¶Î(VHFHIGHB)¡£
UHFƵ¶Î£¬ÊÇÖ¸300~3000MHzƵ¶Î£¬ÎÞÏßÂó¿Ë·çÒ»°ã²ÉÓÃ400~830MHzƵ¶Î£¬³¬¹ý830MHzµÄƵ¶Î½ÏÉÙ²ÉÓã¬ÒòΪ830~960MHzƵ¶ÎÓÐGSMºÍCDMAÊÖ»ú¸ÉÈÅ£¬960MHzÒÔÉϵÄƵ¶ÎÈÆÉäÄÜÁ¦Öð½¥±ä²î£¬ËùÒÔ¹ú¼ÊÉÏ×îÁ÷ÐеÄUHFƵ¶ÎÊÇ800MHzƵ¶Î(740~830MHz)¡£
