It is expected that a coordinated operation of several system integrity protection schemes will become necessity in the future. This research represents an innovative strategy for coordinating under-frequency load shedding and intentional controlled islanding improving electric power stability resilience. In great majority real-world cases, both approaches follow conventional tactics, i.e., dis...

We present a 500-MHz, ultra-low-power phase-locked loop (PLL) realized with the near-threshold supply voltage of 0.4 V in 65-nm CMOS technology. Our PLL employs a new charge pump (CP) circuit structure that can greatly reduce CP up/down current mismatch and their variation with voltage-controlled oscillator (VCO) control voltages. The PLL consumes only 127.8 μW, which corresponds to power effic...

A simple but accurate pseudo-passive mismatch-shaping D/A converter is described. A digital state machine is used to control the switching sequence of a symmetric two-capacitor network that performs the D/A conversion. The error caused by capacitor mismatch is uncorrelated with the input signal and has only little power in the signal band. The system has been simulated assuming a 0.1% capacitor...

the increased risk of hemolytic reactions and erythrocyte recovery delay in abo incompatible hematopoietic stem cell transplantation (hsct) is well established. effects of abo incompatibility on transplantation outcomes is evaluated in this study. we prospectively followed 501 patients undergoing allogeneic stem cell transplantation according to abo compatibility groups of minor, major and bidi...

A dynamic sampling and digital I/Q-mismatch calibration (IQM) in a MB-OFDM UWB baseband transceiver are proposed to reduce ADC power and analog IQM-calibration power. Measured transceiver power consumes 31.2mW, saving at least 43% ADC power and tolerating 10x IQM (2dB gain and 20 degree phase errors) of existing designs to reduce the power and design efforts from analog calibration circuits.