Human body communication

as a new communication mode of body sensor network

has shown outstanding advantages and potential.A voltage controlled oscillator（VCO）for human body communication is presented.The module adopts a 4 stage fully differential structure and the technique of SMIC 0.18 μm 1P6M is adopted.The core area is about 0.02 mm2.The measurement results show that the VCO has an operating frequency range 30

1

30 MHz at 1.8V supply voltage.At 80 MHz

the phase noise at 1 MHz frequency offset is-98 dBc/Hz.And the maximum power consumption is only 1.27 mW.It satisfies the requirement of body sensor networks based on human body communication very well.