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有人能提供一下cc2540双层板的天线参考连接吗?

Other Parts Discussed in Thread: CC2540

都说这个是TI官方推荐的www.ti.com/.../cc2540em-rd,可是这个我下载了,里面好多文件,pcb文件用ALTIUM DESIGNER还打不开,就剩俩pdf能看,其他文件不知道用什么打开,求分享一个可用的天线设计的pcb工程文件