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A 50-Mb/s quadrature phase-shift keying (QPSK)/offset quadrature phase-shift keying (O-QPSK) transmitter suitable for biomedical high-quality imaging application is presented. Centered at 915 MHz, the phase modulation is achieved by directly modifying the self-resonant frequency of an LC voltage-controlled oscillator through capacitor bank switching. By(More)
Neural prosthetics and personal healthcare have increasing need of high channel density low noise low power neural sensor interfaces. The input referred noise and quantization resolution are two essential factors which prevent conventional neural sensor interfaces from simultaneously achieving a good noise efficiency factor and low power consumption. In(More)
—An energy efficient 9T SRAM with bitline leakage equalization and Content-Addressable-Memory-assisted (CAM-assisted) performance boosting techniques is presented. The equalized read bitline leakage improves the read bitline swing by 6.8× at 0.2V. The proposed CAM-assisted boosting technique enhances the write performance of the multi-threshold CMOS(More)
A four-terminal RF MOSFET model to accurately describe the three-port network characteristics is presented. It has been found that the short-channel effect in the source-to-drain capacitance plays a critical role in predicting behavior of the MOSFET in the common-gate/body configuration. Performance of the developed model was verified with the device(More)
OBJECTIVE The primary objective of this study was to validate a novel method of assessing hand hygiene compliance using ultrasound transmitters in patient zones and staff tagged with receivers. The secondary objective was to assess the impact of audio reminders and quantified individual feedback. DESIGN An observational comparison against manual(More)
This paper presents the design and implementation of a fully integrated high-voltage (HV) front-end transducer for MEMS ultrasonic applications. Each of the front-end transducers in the array includes a HV transmitting driver and a 50MHz capacitive micro-machined ultrasound transducer (CMUT). The design adapts low voltage integrated circuit (IC) design(More)