- Ò×µÏÍØÅàѵ,רעÓÚ΢²¨¡¢ÉäƵ¡¢ÌìÏßÉè¼Æ¹¤³ÌʦµÄÅàÑø
MTKƽ̨У׼ʱ³öÏÖTX DC offset£¬Çë°ïæ·ÖÎöÒ»ÏÂ.
ÔÚÕâÒ»Åú°å×Ó£¨¡µ1000£©ÖгöÏÖÁË2pcs TX DC_offseterror£¬Çë°ïæ·ÖÎöһϾßÌå¿ÉÄÜ´æÔÚµÄÔÒò£¬Ð»Ð»
У׼LOG£º
===========TX IQ Cal Start===============
TrimI =0,TrimQ =0,SBS =-38.306590,PSBS =0.000148
OffsetI ==0,OffsetQ =0,OOS =-40.241320,POOS =0.000095
TrimI =7,TrimQ =-7,SBS =-34.499820,PSBS =0.000355
OffsetI ==0,OffsetQ =30,OOS =-29.978620,POOS =0.001005
TrimI =-7,TrimQ =7,SBS =-32.213790,PSBS =0.000601
OffsetI ==30,OffsetQ =-30,OOS =-24.575780,POOS =0.003487
OffsetI ==-30,OffsetQ =-30,OOS =-26.037480,POOS =0.002490
Evaluate Xt = 2.61,TrimI = 1,TrimQ = -2
Evaluate OffsetI = -6,OffsetQ = 4
d_OOS_Check = -53.22,d_SBS_Check = -38.72
TX IQ Imblance Fail,MAX Imblance:-40.000000
d_SBS_Check = -38.72 ÕâÒ»Ïî²»¹ý£¬Õý³£µÄÖµÔÚ-46×óÓÒ¡£
¸ü»»¹ý26M¾§ÌåºÍMT6139¶¼Ã»ÓÐ×÷Óᣵ«ÊÇÔÚ¸Õº¸ÍêÔªÆ÷¼þ£¬°å×ÓºÜÌ̵ÄʱºòÄܹý£¬²»¹ýÖµÒ²ÔÚ-41×óÓÒ¡£ÀäÈ´ºóÓкÍÔÀ´Ò»Ñù¡£
Ó¦¸ÃÊÇÄĸöÁϲ»Îȶ¨µ¼ÖµÄ.Ò²ÓпÉÄÜÊÇPAµ¼ÖµÄ.
ллÁË
Â¥Ö÷×îºó¸ã¶¨Ã»£¿
ÊÇʲôÔÒòÔì³ÉµÄ£¿
TX DC offset
ÕâÏîÖ¸µÄÊÇʲôѽ£¬Ð£µÄÊÇʲôѽ
¹þ¹þ£¬Õâ¸öÎÊÌâÎÒÇ°Ìì¸Õ¸Õ½â¾ö¡£ÎÒµÄÊÇ23D+RF7168+AD6548³öÏÖTX IQУ׼²»¹ý£¬TX DC offset¹ý´ó£¬Ö»ÓÐ-30×óÓÒ£¬¶øÃÅÏÞÖµÊÇ-35¡£ÓÐʱºòУ׼ÓÖ¹ýµÃÁË£¬ÓàÁ¿»¹ºÜ´ó£¬ÓÐ-60¶à¡£Ê²Ã´¶¼²»¶¯Á¬ÐøУ׼¼¸´Î£¬¾ÍÓÐÒ»Á½´Î²»¹ýµÄ¡£
½â¾ö·½·¨ÊÇ£ºÉý¼¶Èí¼þ´ò²¹¶¡¡£ºÙºÙ£¡
Õâ¸öÈÝÒ×ѽ
Èí¼þ´ò²¹¶¡,¾ßÌåµÄÔõô²Ù×÷ѽ.
6Â¥µÄ,ÄãËù˵µÄÉý¼«Èí¼þ´ò²¹¶¡Ö¸µÄÊǹ¤¾ß»¹ÊÇÊÖ»úÈí¼þ??лл!!
ÊÖ»úÈí¼þ¡£²»Êǹ¤¾ßÈí¼þ¡£ÎÊÎÊMTKµÄÈ˾ÍÖªµÀÁË¡£
Çë°Ñ²¹¶¡¹²Ïí°¡£¬Ð»Ð»¡£
ÆÚ´ýÕæÏ࣬˸ø½âÊÍÏÂÕâ¸öУ׼µÄº¬Òåѽ¡£
ÉêÃ÷£ºÍøÓѻظ´Á¼Ý¬²»Æ룬½ö¹©²Î¿¼¡£
ÉÏһƪ£ºÊÕÒôIC AR1000µÄLAYOUT ¹æÔò.
ÏÂһƪ£ºEUA4990 SPEC