jsxuhj 发表于 2006-10-16 17:54 本振信号的频率比调制信号固定高出465KHz,固定中频的好处是后级电路可以相对固定灵敏度和精确度可以做得很 ...
Undo
Redo
Table
Removeformat
Autotypeset Left Center Right
FloatLeft FloatRight Orderedlist Unorderedlist
点击图片添加到帖子内容中
Archiver|手机版|小黑屋|52RD我爱研发网 ( 沪ICP备2022007804号-2 )
GMT+8, 2024-6-7 07:42 , Processed in 0.044727 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.5
© 2001-2023 Discuz! Team.