Safety, Security, and Health Care

(Thrust leader: Yiorgos Makris, University of Texas at Dallas)

TxACE is developing analog technology that enhances public safety and security, and health care. The projects are intended to enable a new generation of devices that can scan for harmful substances by researching 200-300 GHz silicon ICs for use in spectrometers as well as a CO2 sensor. The ICs and CO2 sensor can also be used to analyze breaths for medical applications. The thrust is also working to significantly reduce the cost of millimeter wave imaging and on-vehicle radar technology for automotive safety by researching circuit techniques that can improve manufacturing, and simplify test and packaging, as well as signal processing techniques that reduce system complexity. Lastly, this thrust is investigating vibration sensors.

Figure 3. (Top) 200-260 GHz CMOS transmitter and receiver for rotational spectroscopy (K. O, W. Choi, UT-Dallas), (Bottom left) Simulated flux leakage in a motor (B. Akin, UT-Dallas), (Bottom left center) Vibration sensor compatible with conventional silicon IC and packaging technologies (S. Pourkamali, UT Dallas), (Bottom right center) Projected e-test space, where each point represents a wafer. A proper test flow to each process signature of each wafer is assigned to maximize the test cost reduction while maintaining the test escape rate below a target level. (Y. Makris, UT-Dallas), (Bottom right) Automotive radar image (M. Torlak, UT-Dallas).

Safety, Security and Health Care Thrust

Category Accomplishment
Safety, Security and Health Care (Systems) Online fault diagnosis/failure prognosis methods are paramount for identifying incipient faults of power semiconductor devices and determining IGBT state of health based on monitoring electrical failure precursors. Studies have been conducted to identify the most reliable aging precursors, based on which a start/stop diagnostic circuit has been designed for gate drivers and a method for estimating the remaining useful lifetime based on Gaussian process modeling has been developed and experimentally demonstrated. (1836.154 Akin, UT Dallas)
Safety, Security and Health Care (Systems) Dynamic power management and security methods are both important for modern SoCs but have typically been developed independently. This task seeks to study the interplay between dynamic power management and security. Recent studies have demonstrated the effect of integrated voltage regulators and adaptive clocking-based voltage dithering on reducing information leakage through power and electromagnetic side channels in cryptographic cores. (2810.002 Mukhopadhyay, Georgia Tech)
Safety, Security and Health Care (Systems) Modeling aging effects as a function of their workload is imperative for evaluating reliability of analog/mixed-signal ICs. This task is developing dedicated test structures and in-situ monitoring circuits in order to measure BTI/HCI effects, along with simulation frameworks for projecting lifetime reliability and design guidelines for mitigating aging effects in analog/mixed-signal ICs. To date, an in-situ INL/DNL measurement block has been used for SAR-ADC DNL measurement, and the frequency and phase noise degradation of an all-digital PLL have been measured using simple on-chip monitoring circuits. (2712.017, Kim, U. of Minnesota)