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CC3200MOD: 如何增加wifi信号强度

Part Number: CC3200MOD
Other Parts Discussed in Thread: CC3200

WIFI前期开发用的CC3200-LAUNCHPAD,CC3200作为AP,信号强度很强。而后采购了CC3200MOD模块自己做了张板子,天线模块用的和开发板一样,但是同样的代码烧写进去发现信号强度很弱,只有将板子和站点端贴得很近很近信号强度才正常,这是怎么回事,阻抗匹配也做了,想着是CC3200MOD信号应该没问题,难道是模块有问题吗,还是需要怎么调试?