·¢²¼Ê±¼ä : ÐÇÆÚÎå ÎÄÕ¼¯³ÉÔËËã·Å´óµç· - ͼÎĸüÐÂÍê±Ï¿ªÊ¼ÔĶÁeb3877ea50e2524de5187e52
?>?0ʱ£¬| T(j?)|Ë¥¼õºÜ¿ì
| T(j?)|ÏÔÈ»£¬µç·ÄÜʹµÍÓÚ?0µÄ| Auf0|ÐźÅ˳Àûͨ¹ý£¬Ë¥¼õºÜС£¬
1¶øʹ¸ßÓÚ?0µÄÐźŲ»Ò×ͨ¹ý£¬Ë¥¼õºÜ´ó£¬³ÆÒ»½×ÓÐÔ´µÍͨ
2Auf0OÒ»½×¶þ½×Â˲¨Æ÷¡£
ΪÁ˸ÄÉÆÂ˲¨Ð§¹û£¬Ê¹?>?0 ʱÐźÅË¥¼õµÃ¸ü¿ìЩ£¬³£½«Á½½ÚRCÂ˲¨»·½Ú´®½ÓÆðÀ´£¬×é³É+
ui
¶þ½×ÓÐÔ´µÍͨÂ˲¨Æ÷¡£
¨C
·ùƵÌØÐÔ
RF
?0
?R1
R
RC¨C+
??+
C
+uo¨C
2. ÓÐÔ´¸ßͨÂ˲¨Æ÷
RF
R1
+ui¨C¹Ê£º
C¨C+R
??ÉèÊäÈëΪÕýÏÒ²¨Ðźţ¬ÔòÓÐ
??U?+uo¨C
R1R?j?C?Ui+
RF??Uo?(1?)U?R11ʽÖÐ :?0?RC³ÆΪ½ØÖ¹½ÇƵÂÊ?Uo?UiRFRF1?1?R1R1??1?01?1?jj?RC?ÈôƵÂÊ?Ϊ±äÁ¿£¬Ôòµç·µÄ´«µÝº¯Êý
RF1?Uo(j?)Auf0R1?T(j?)???01?j?0Ui(j?)1?jÆäģΪ??Auf0T(j?)?| T(j?)|?02| A|uf01?()1?Auf0µ±??0ʱ,T(j?)?02Auf0µ±???0ʱ,T(j?)?O?02?µ±???ʱ,T(j?)?Auf0·ùƵÌØÐÔ
?0µÄÐźÅͨ¹ý£¬¶øСÓÚ?0
µÄÐźű»×èÖ¹£¬³ÆΪÓÐÔ´¸ßͨÂ˲¨Æ÷¡£
9.3.2 ²ÉÑù±£³Öµç·
²ÉÑù±£³Öµç·£¬¶àÓÃÓÚÄ£-Êýת»»µç·£¨A/D£©Ö®Ç°¡£ÓÉÓÚA/D ת»»ÐèÒªÒ»¶¨µÄʱ¼ä£¬ËùÒÔÔÚ½øÐÐA/D ת»»Ç°±ØÐë¶ÔÄ£ÄâÁ¿½øÐÐ˲¼ä²ÉÑù£¬²¢°Ñ²ÉÑùÖµ±£´æÒ»¶Îʱ¼ä£¬ÒÔÂú×ãA/D ת»»µç·µÄÐèÒª¡£1. µç·ģÄâÊäÈëÐźÅÄ£Ä⿪¹ØS+uC¨C¨C++??+ui¨CÓÃÓÚÊý×ֵ緡¢¼ÆËã»ú¿ØÖƼ°³ÌÐò¿ØÖƵÈ×°ÖÃÖС£+uo¨Cµçѹ¸úËæÆ÷¿ØÖÆÐźŲÉÑù´æ´¢µçÈÝ