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2640蓝牙信号比较弱,肿么办

Other Parts Discussed in Thread: CC2640

我目前遇到个问题,就是用cc2640芯片发广播,然后我发现2640的无线信号比较弱。已经确认器件是没问题的,因为在别的板子上用过。另外确认问题就是信号相对别的板子较弱。各位大神,可知道怎么破这个问题?

附天线部分原理图:

Desktop.zip