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CC1352P: sub1G接收灵敏度问题

Part Number: CC1352P

我在使用CC1352P的时遇到了一个问题,在采用SUB1G模式(设置为:200kbps,50kHz Deviation,2-GFSK,311kHz RX Bandwith),高功率口采用巴伦,低功率口是单端外偏接收,在采用射频线缆连接时,接收灵敏度小于-95dBm,但是用天线发射接收,灵敏度就在-70~-80dBm之间,放在屏蔽箱中测试也是如此。2.4G测试都是正常的。下面是原理图:

CC1352p.pdf