title: Ultra low-power transceiver with novel FSK modulation technique and efficient FSK-to-ASK demodulation.
abstract: Energy-efficient and high-data rate are desired in biomedical devices transceivers. A high-performance transmitter (Tx) and an ultra-low-power receiver (Rx) dedicated to medical implants communications operating at Industrial, Scientific and Medical (ISM) frequency band are presented. Tx benefits from a new efficient Frequency-Shift Keying (FSK) modulation technique which provides up to 20 Mb/s of data-rate and consumes only 0.084 nJ/b validated through fabrication. The receiver consists of an FSK-to-ASK conversion based receiver with OOK fully passive wake-up device (WuRx). This WuRx is battery less with energy harvesting technique which plays an important role in making the RF transceiver energy-efficient. The Rx 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 Rx shows -78 dBm sensitivity for 8 Mbps data rate while consuming 639 μW. The proposed circuits are implemented in IBM 0.13 μm CMOS technology with 1.2 V supply voltage.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Zgaren
authors.forename: Arash
authors.initials: A
authors.lastname: Moradi
authors.forename: Mohamad
authors.initials: M
authors.lastname: Sawan
mesh_terms: D011211:Electric Power Supplies; D004560:Electricity; D004582:Electronics, Medical / Q000295:instrumentation; D004867:Equipment Design; D012815:Signal Processing, Computer-Assisted