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高斯频移键控(Gaussian frequency-shifting keying,GFSK)作为一种重要的调制和解调方案,广泛应用于蓝牙、IEEE802.15.4g及各种无线传感网络中;此外,它也被国家电网公司制定的《电力用户用电信息采集系统通信协议》采用,成为智能电网无线电力信息采集系统的关键技术,为全球能源互联网的发展奠定坚实的硬件基础。通过理论推导,提出一种基于反正切的GFSK解调器结构,基于硬件描述语言设计该结构的GFSK解调器,测试结果表明该解调器可抵抗±70 k Hz的频偏,±1 V的直流偏置,以及任意角度的相位偏置。该解调器占用0.513 mm2面积,功耗11.422μW。该GFSK解调器未来可集成到无线电力信息采集系统的So C芯片上,并最终应用于能源互联网体系中。
As an important modulation and demodulation scheme, Gaussian frequency-shifting keying (GFSK) is widely used in Bluetooth, IEEE802.15.4g and various wireless sensor networks. In addition, it is also used by National Grid The “Communication Protocol for Electricity User’s Electricity Information Collection System” formulated by the Company has become the key technology of wireless power information collection system in Smart Grid, laying a solid hardware foundation for the development of global energy Internet. Based on the theory deduction, an architecture of GFSK demodulator based on arc tangent is proposed. The GFSK demodulator based on hardware description language is designed. The test results show that the demodulator can resist ± 70 kHz frequency offset, ± 1 V The DC bias, as well as any angle of the phase offset. The demodulator occupies 0.513 mm2 area, power consumption 11.422μW. The GFSK demodulator in the future can be integrated into SoC chip of wireless power information gathering system, and finally applied to the energy Internet system.