IEEE Transactions on Very Large Scale Integration (VLSI) Systems · 2015 · 13 citations · 22 references
EngineeringBiomedical EngineeringElectrical EngineeringBiomedical Signal ProcessingLow-power DesignWireless CommunicationsBody ElectronicsCmos Circuit DesignMixed-signal Integrated Circuit DesignMixed-signal IntegrationRadio-frequency Integrated CircuitsReceiver SystemsBit Error RateBoostingCmos Analog Circuit DesignPower ConsumptionPower Consumption OptimizationReceiver Front-endsSwitched-capacitor FiltersTransmission Line Analysis
This paper presents a low power, long-transmission distance, high data rate intrabody communication (IBC) analog receiver front end (RFE). First, to optimize the transmission performance, conventional transmission line analysis scheme is creatively adopted to the IBC design to characterize the body channel. Second, switched-capacitor filters based on sampling rate boosting technique are adopted for higher accuracy and lower power consumption. Third, a novel RFE topology is proposed to further enhance the IBC performance. The new RFE is designed and fabricated in a standard 180-nm CMOS process. Measurement results show that the RFE can successfully transmit data spanning the whole human body, around 180 cm, which is one of the longest transmission distances reported in related literatures. Furthermore, it reaches a maximum data rate of 2.5 Mb/s with a bit error rate less than 1e-7 and consumes 5.4 mW from a 1.8 V supply. The proposed RFE compares favorably to similar reported works.
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