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This paper presents a mostly digital impulse radio (IR) ultra-wideband (UWB) transceiver for low power wearable and implantable biomedical devices. The UWB transmitter adopts carrier-less all-digital pulse generator with on–off keying (OOK) modulation, and uses an 11-bit Barker code for reliable communication in the frequency range of 0–960 MHz. The receiver is based on auto-threshold detection. The...
Wide area measurements are becoming the basis of power system monitoring, protection and control. The frequency disturbance recorder (FDR) is actually a single-phase phasor measurement unit (PMU). It measures the voltage amplitude, angle and frequency from a single-phase 120-V wall outlet. Currently, the accuracy of synchrophasor measurements depends heavily on the precise time signal provided by...
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