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Hi Ti：请教一下，CC2540pcb天线如何设计，长，宽多少？
可以参考usbdongle的设计，如果需要好的通信效果，可以考虑用外部天线！
是的，建议参考TI的官方参考设计 http://www.ti.com.cn/product/cn/CC2540/toolssoftware#TIDesigns
