IEEE Transactions on Circuits and Systems I Regular Papers · 2015 · 46 citations · 19 references
EngineeringBiomedical EngineeringElectrical EngineeringLow-power DesignMicroelectronicsWireless CommunicationsCmos Circuit DesignHigh-frequency Semiconductor DevicesImplantable Biomedical DevicesImplantable MicrosystemsRadio-frequency Integrated CircuitsWireless Power TransferCmos Radio-frequency CircuitsEnergy HarvestingEnergy Harvesting DevicesEnergy Harvesting SystemsImplantable Bioelectronic DevicesRf Cmos DesignRf Power ManagementUltra-low-power Cmos
We present in this paper an ultra low power ISM band RF receiver intended for implantable biomedical devices. The proposed circuit, which represents the reception part of a new energy-efficient RF FSK transceiver, consist of an FSK receiver (Rx) with OOK fully passive wake-up device (WuRx). This WuRx is batteryless with energy harvesting technique which plays an important role in making the RF transceiver energy-efficient. This proposed receiver is achieved with a reduced hardware architecture which does not use an accurate local oscillator, high Q external inductor and I/Q signal path. The circuit is base on a dual injection locked FSK-to-ASK conversion technique. The circuit is implemented in IBM 0.13 μm CMOS technology with 1.2 V supply voltage. This WuRx achieves a data rate of 100 kbps for 0.2 μW power dissipation at -53 dBm input signal. The Rx shows -78 dBm sensitivity for 8 Mbps data rate while consuming 639 μW power.
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Antenna theory, analysis, and design
W. Croswell · IRE Transactions on Telemetry and Remote Control · 1982 · 8.6K citations
A 900 MHz CMOS LC-oscillator with quadrature outputs
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