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Modulation For Modulo: A Sampling-Efficient High-Dynamic Range ADC
An alternative method using phase modulation (PM) achieves HDR-ADC functionality by modulating the phase of a carrier signal with the analog input.
Design Analysis and Experimental Validation of Relaxation Oscillator-Based Circuit for R-C Sensors
The circuit is tested for a range from 10 pF to 42 pF and 100 k$\Omega$ to 1 M$\Omega$ for parallel R-C sensors with an error of less than 1. 5\%.
An Embedded Auto-Calibrated Offset Current Compensation Technique for PPG/fNIRS System
A prototype of the system is built and tested for PPG signal recording.
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