±Ø·¢°åµÄÉè¼ÆÔ½À´Ô½¶àÉæ¼°µ½¸ßËÙµÍËðºÄ£¬AIµÄ¼±ËÙ·¢Õ¹£¬¸ü¼Ó¾çÁËÕâ¸öÇ÷ÊÆ¡£Ò»°ãÎÒÃÇÓýéµç³£ÊýDielectric Constant (Dk), ËðºÄÒò×ÓDissipation factor  (Df)À´ÅжϲÄÁϵÄÐÔÄÜ¡£ÎÒÃǽñÌì̸̸DkÈçºÎÓ°Ïì×ÅÐźÅÔÚPCBÏß·ÉϵĴ«Ê䣿

| µçÈݵĻù±¾Ô­Àí

µ±ÓÐÁ½¸öƽÐе¼Ì壬ʩ¼ÓµçѹÔÚÕâÁ½¸öµ¼ÌåÉÏ£¬Ò»¸öµ¼Ìå»ýÀÛÕýµçºÉ£¬ÁíÒ»¸ö»ýÀÛ¸ºµçºÉ£¬´Ó¶ø²úÉúµçѹ²î¡£ÖмäµÄ½éÖʻᱻ¼«»¯£¬²¢ÇÒÓ°Ïì×ÅÕâÁ½¸öµ¼ÌåÖ®¼äµçºÉµÄ´æ´¢ÄÜÁ¦£¬¼´£º

C=Q/V

Èç¹ûÁ½¸öµ¼ÌåÏ໥ƽÐУ¬ÄǵçºÉµÄ´æ´¢ÄÜÁ¦¾ÍÊÇ£º

Dk£¨½éµç³£Êý£©Í¨³£Ö¸Ïà¶Ô½éµç³£Êý?? £¬±íʾ½éÖÊÔڵ糡Öд¢´æµçÄܵÄÄÜÁ¦Ïà¶ÔÓÚÕæ¿ÕµÄ±ÈÀý¡£ÔÚÁ½¸ö½ðÊôµ¼Ìå¹¹³ÉµÄµçÈÝÆ÷ÖУ¬½éÖʵÄ??Ô½¸ß£¬ÔÚÏàͬµçѹÏ´¢´æµÄµçºÉÔ½¶à¡£

Õæ¿ÕµÄ??=1 £¬¿ÕÆøԼΪ 1.0006£¬¹¤³ÌÉϳ£½üËÆΪ 1¡£ÆäËû½éÖʵÄ??ÊÇÏà¶ÔÓÚÕæ¿ÕµÄ±ÈÖµ£¬Òò´ËÒ²³ÆΪÏà¶Ô½éµç³£Êý¡£

DkÊÇÈçºÎÓ°Ïì±Ø·¢°åÐźŴ«ÊäµÄÄØ£¿¼ÙÉèÎÒÃÇ¿´±Ø·¢°åÉϵÄÐźŴ«Êä·¾¶ºÍ»Ø··¾¶£¬ËûÃǾÍÏñÁ½¸öƽÐе¼Ì壬µ±Ê©¼Óµçѹµ½±Ø·¢°åÉÏʱ£¬ÐźÅ·¾¶ºÍ»Ø··¾¶Ö®¼äµÄµçѹ²î²úÉúÁËÐźÅ¡£±ä»¯µÄµçѹ²î²úÉúµç³¡£¬±ä»¯µÄµç³¡²úÉú´Å³¡£¬µç´Å³¡ÑØ×Å´«Êä·¾¶ÉÏÐÐ×ß¡£

µç´Å³¡»áʹ½éÖÊ·¢Éú¼«»¯£ºµç×ÓÔƱ»À­ÏòÒ»²à£¬¼«ÐÔ·Ö×ÓÏñÖ¸ÄÏÕëÒ»ÑùתÏòµç³¡·½Ïò¡£ÕâЩ΢¹ÛÔ˶¯ÔÚ½éÖÊÄÚ²¿²úÉú´óÁ¿¡°Êø¸¿µçºÉ¡±£¬ËüÃÇ×Ô¼º»áÐγÉÒ»¸ö·´Ïòµç³¡£¬µÖÏûµôÒ»²¿·ÖÍâ¼Óµç³¡¡£µ¼ÖÂ×ܵ糡±»Ï÷ÈõÁË£¬ËùÒÔÐźŴ«²¥ËٶȱäÂýÁË¡£

²Î¿¼ÏÂÃæµÄ¹«Ê½£¬?? ÊÇÐźŵÄËٶȣ¬cÊÇÕæ¿Õ¹âËÙ£¬ ??ÊÇÏà¶Ô½éµç³£Êý ¡£??ÓëÐźÅËÙ¶ÈÐγÉƽ·½¸ùµÄ·´±È¡£Ò²¾ÍÊÇDkÔ½´ó£¬½éÖʵļ«»¯Ô½´ó£¬¶ÔÔ­µç³¡µÄµÖÏûԽǿ£¬µç´Å²¨½¨Á¢ËÙ¶ÈÔ½Âý£¬ÄÇÐźÅËÙ¶ÈÔ½Âý¡£

Õ⹫ʽ¸æËßÎÒÃÇ£ºDk ÿÔö´óµ½Ô­À´µÄ 4 ±¶£¬ÐźÅËٶȾͻá¼õÂýÒ»°ë¡£

ÏñPTFEÊǵͼ«»¯²ÄÁÏ£¬DkÖµµÍ¡£ËùÒÔµ±Óе糡ʩ¼ÓÓÚPTFEʱ£¬Ö»»á²úÉúÉÙÁ¿µÄÊø¸¿µçºÉ£¬¶ÔÐźŴ«ÊäµÄÓ°ÏìµÍ¡£

ÐźÅÔÚPCBÉÏ´«ÊäËٶȵIJîÒ죬»áµ¼ÖÂÐźŵÄʱÑÓºÍÏàλ²î¡£

³ýÁËÍÏÂýÐźţ¬Dk ´øÀ´µÄ¶îÍâµçÈÝ»¹»á´Ó¸ù±¾Éϸı䴫ÊäÏßµÄÁíÒ»¸ö¹Ø¼üÌØÐÔ - ÌØÐÔ×迹¡£

ÆäÖÐVÊÇÐźÅÏßÓë²Î¿¼Æ½ÃæÖ®¼äµÄµçѹ£¬IÊÇÑØ×ÅÐźÅÏß´«²¥µÄµçÁ÷¡£µçÁ÷¼´µ¥Î»Ê±¼äͨ¹ýÐźÅÏß½ØÃæµÄµçºÉÁ¿¡£

µ±½éÖʵÄDk Ô½´ó£¬¼«»¯Ô½´ó£¬ÐγɵĵçÈÝÔ½´ó¡£¸ù¾ÝµçÈÝC=Q/V£¬ÔÚͬÑùµÄµçѹVÏ£¬ÐźÅÏßÉÏÐèÒª¶Ñ»ý¸ü¶àµÄ×ÔÓɵçºÉ¡£ÕâЩ×ÔÓɵçºÉÀ´×ÔÇý¶¯¶ËµÄµç×ÓÔ´£¬Ò²¾ÍÊÇÓиü´óµÄµçÁ÷Á÷¶¯£¬µçÁ÷ÊǵçºÉµÄÁ÷¶¯ËÙÂÊ¡£

¶ÔÓÚ¸ßËÙÐźţ¬µçѹËæʱ¼ä¿ìËٱ仯£¨dV/dt ºÜ´ó£©£¬¸ù¾Ý I = C¡¤dV/dt£¬µçÈÝÔ½´óÔò˲ʱµçÁ÷Ô½´ó£¬´Ó¶øÌØÐÔ×迹 Z=dV/dI Ô½µÍ

´ÓÉÏÃæ¿ÉÒÔ¿´µ½£¬Dk Ô½´ó£¬×迹ԽµÍ¡£Õâ¾ÍÊÇΪʲô¹¤³ÌÈËÔ±ÔÚÄ£Äâ×迹ʱ£¬ÐèÒª¿¼ÂÇDKÖµµÄÔ­Òò¡£

ÁíÍâÎÒÃÇÒ²¿ÉÒÔ¿´µ½½éÖʺñ¶È¶Ô×迹µÄÓ°Ïì¡£µ±½éÖʺñ¶ÈÔö¼Ó£¬µçÈÝC»á¼õÉÙ£¬ÄÇΪÁËά³ÖÏàͬµçѹ£¬ÐèÒª¶Ñ»ýµÄµçºÉ¼õÉÙ£¬µçÁ÷¼õÉÙ£¬×迹Ҳ¾ÍÊÇÔö¼ÓÁË¡£

Dk ͨ¹ý¼«»¯Ð§Ó¦£¬Ò»·½ÃæÓÃÊø¸¿µçºÉ"ÍÏÂý"ÐźÅËٶȣ¬ÁíÒ»·½Ãæͨ¹ýÔö´ó·Ö²¼µçÈÝ"À­µÍ"ÌØÐÔ×迹¡£ÕâÁ½¸öЧӦ¹²Í¬¾ö¶¨ÁËÄãµÄ¸ßËÙÁ´Â·ÊÇÎȽ¡ÔËÐл¹ÊDZôÁÙ±ÀÀ£¡£