Physical Layer 物理层
•RF Specifications 射频规格–Operates in 2.4 GHz ISM band 在2.4 GHz的ISM波段操作
–GFSK modulation
–40 channels with 2 MHz spacing 40个通道
•3 fixed advertisting channels for broadcasting, which avoid 802.11 interferance 3个广播通道
•37 adaptively frequency hopped dynamic data channels 37个数据通道
•Physical layer can be combined with standard Bluetooth RF in a dual-mode device 物理层可以结合标准蓝牙在双模装置
•2 MHz spacing allows for better adjacent channel rejection 2M赫兹的间隔
总结：该层主要带有无线发射模块
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