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U-model-based two-degree-of-freedom internal model control of nonlinear dynamic systems (2021)
Journal Article
Li, R., Zhu, Q., Narayan, P., Yue, A., Yao, Y., & Deng, M. (2021). U-model-based two-degree-of-freedom internal model control of nonlinear dynamic systems. Entropy, 23(2), https://doi.org/10.3390/e23020169

This paper proposes a U-Model-Based Two-Degree-of-Freedom Internal Model Control (UTDF-IMC) structure with strength in nonlinear dynamic inversion, and separation of tracking design and robustness design. This approach can effectively accommodate mod... Read More about U-model-based two-degree-of-freedom internal model control of nonlinear dynamic systems.

Charge-based supercapacitor storage estimation for indoor sub-mW photovoltaic energy harvesting powered wireless sensor nodes (2019)
Journal Article
Yue, X., Kiely, J., Gibson, D., & Drakakis, E. M. (2020). Charge-based supercapacitor storage estimation for indoor sub-mW photovoltaic energy harvesting powered wireless sensor nodes. IEEE Transactions on Industrial Electronics, 67(3), 2411-2421. https://doi.org/10.1109/TIE.2019.2896321

Supercapacitors offer an attractive energy storage solution for lifetime “fit and forget” photovoltaic (PV) energy harvesting powered wireless sensor nodes for internet of things (IoT) applications. Whilst their low storage capacity is not an issue f... Read More about Charge-based supercapacitor storage estimation for indoor sub-mW photovoltaic energy harvesting powered wireless sensor nodes.

Analyses of parasitic capacitance effects and flicker noise of the DAC capacitor array for high resolution SAR ADCs (2018)
Journal Article
Yue, X., Kiely, J., & McLeod, C. (2018). Analyses of parasitic capacitance effects and flicker noise of the DAC capacitor array for high resolution SAR ADCs. International Journal of Computer Applications in Technology, 58(4), 259-266. https://doi.org/10.1504/IJCAT.2018.095934

Copyright © 2018 Inderscience Enterprises Ltd. This paper analyses the effects of parasitic capacitances of unit capacitors on the accuracy and the noise performance of the DAC capacitor array in a SAR ADC, showing that thermal noise of the array dec... Read More about Analyses of parasitic capacitance effects and flicker noise of the DAC capacitor array for high resolution SAR ADCs.

An implantable mixed-signal CMOS die for battery-powered in vivo blowfly neural recordings (2018)
Journal Article
Drakakis, E. M., Krapp, H. G., Huang, J. V., & Yue, X. (2018). An implantable mixed-signal CMOS die for battery-powered in vivo blowfly neural recordings. Microelectronics Journal, 74, 34-42. https://doi.org/10.1016/j.mejo.2018.01.022

© 2018 A mixed-signal die containing two differential input amplifiers, a multiplexer and a 50 KSPS, 10-bit SAR ADC, has been designed and fabricated in a 0.35 μm CMOS process for in vivo neural recording from freely moving blowflies where power supp... Read More about An implantable mixed-signal CMOS die for battery-powered in vivo blowfly neural recordings.

Estimation of the dynamic leakage current of a supercapacitor in energy harvesting powered autonomous wireless sensor nodes (2017)
Journal Article
Yue, X., Kiely, J., Farooq, A., & Champneys, A. (2017). Estimation of the dynamic leakage current of a supercapacitor in energy harvesting powered autonomous wireless sensor nodes. Intelec, 2017-October, 278-281. https://doi.org/10.1109/INTLEC.2017.8214147

© 2017 IEEE. The supercapacitor is a candidate energy storage component for energy harvesting powered autonomous wireless sensor node aiming to achieve battery replacement-free, 'fit and forget' sensor node in low-power IoT applications. The leakage... Read More about Estimation of the dynamic leakage current of a supercapacitor in energy harvesting powered autonomous wireless sensor nodes.

Development of an Indoor Photovoltaic Energy Harvesting Module for Autonomous Sensors in Building Air Quality Applications (2017)
Journal Article
Yue, X., Kauer, M., Bellanger, M., Beard, O., Brownlow, M., Gibson, D., …Song, S. (2017). Development of an Indoor Photovoltaic Energy Harvesting Module for Autonomous Sensors in Building Air Quality Applications. IEEE Internet of Things, 4(6), 2092-2103. https://doi.org/10.1109/JIOT.2017.2754981

© 2017 IEEE. A 50 mm × 20 mm × 15 mm indoor photovoltaic (PV) energy harvesting power module (IPEHPM) has been developed for powering an Internet of Things (IoT) sensor node containing a low-power CO 2 sensor for automatic building ventilation. It i... Read More about Development of an Indoor Photovoltaic Energy Harvesting Module for Autonomous Sensors in Building Air Quality Applications.

A successive approximation method to precisely measure leakage current of the rechargeable Lithium coin battery (2017)
Journal Article
Yue, X., Yue, X., Kiely, J., Ghauri, S., Kauer, M., Bellanger, M., & Gibson, D. (2017). A successive approximation method to precisely measure leakage current of the rechargeable Lithium coin battery. Journal of Energy Storage, 13, 442-446. https://doi.org/10.1016/j.est.2017.08.006

© 2017 Elsevier Ltd When the rechargeable Lithium coin battery is employed as the storage component for indoor energy harvesting, the leakage current of the battery cannot be ignored, especially in ultra-low-power applications. The leakage current of... Read More about A successive approximation method to precisely measure leakage current of the rechargeable Lithium coin battery.

Determining the reliable minimum unit capacitance for the DAC capacitor array of SAR ADCs (2013)
Journal Article
Yue, X. (2013). Determining the reliable minimum unit capacitance for the DAC capacitor array of SAR ADCs. Microelectronics Journal, 44(6), 473-478. https://doi.org/10.1016/j.mejo.2013.03.011

The layout area of an SAR ADC is mainly occupied by its DAC capacitor array. Since there are 2 matched unit capacitors employed for a binary-weighted N-bit DAC, selecting a small unit capacitance is the key to reducing the layout area of the capacit... Read More about Determining the reliable minimum unit capacitance for the DAC capacitor array of SAR ADCs.

An output code offset-free comparator for SAR ADCs based on non-linear preamplifier and CMOS inverters (2013)
Journal Article
Krapp, H. G., Yue, X., Crapp, H., & Drakakis, E. M. (2013). An output code offset-free comparator for SAR ADCs based on non-linear preamplifier and CMOS inverters. Microelectronics Journal, 44(5), 414-420. https://doi.org/10.1016/j.mejo.2013.02.011

The Tanh transfer function of the differential pair operating in weak inversion is employed to implement the non-linear pre-amplification for the comparator of the SAR ADC. This non-linear preamplifier achieves a low gain for large input signals ther... Read More about An output code offset-free comparator for SAR ADCs based on non-linear preamplifier and CMOS inverters.

Generation of spatio-temporal concentration profiles for cell culture systems: A case study in ammonia (2010)
Journal Article
Yue, X., Drakakisa, E. M., Mantalaris, A., & Cass, A. (2010). Generation of spatio-temporal concentration profiles for cell culture systems: A case study in ammonia. Measurement, 43(9), 1207-1216. https://doi.org/10.1016/j.measurement.2010.05.012

Cellular behavior is influenced by micro-concentration gradients existing in their immediate spatio-environment. A practical real-time measurement system, composed of miniaturized long-lasting sensors placed within a two-dimensional bioreactor and a... Read More about Generation of spatio-temporal concentration profiles for cell culture systems: A case study in ammonia.

Modular hardware design for distant-internet embedded systems engineering laboratory (2009)
Journal Article
Yue, X., Drakakis, E. M., Harkin, J., Callaghan, M. J., McGinnity, T. M., & Maguire, L. P. (2009). Modular hardware design for distant-internet embedded systems engineering laboratory. Computer Applications in Engineering Education, 17(4), 389-397. https://doi.org/10.1002/cae.20259

A novel hardware system providing remote accessible embedded system experiments of microcontroller, digital signal processor (DSP), and field-programmable gate array (FPGA) via Internet is presented. Three newly developed hardware modules for integra... Read More about Modular hardware design for distant-internet embedded systems engineering laboratory.

FPGA design and implementation for EIT data acquisition (2008)
Journal Article
Yue, X. Y., & McLeod, C. (2008). FPGA design and implementation for EIT data acquisition. Physiological Measurement, 29(10), 1233-1246. https://doi.org/10.1088/0967-3334/29/10/007

OXBACT-5 was designed to meet the challenges involved in working in the intensive care hospital environment focussed particularly on thoracic imaging of patients with respiratory distress and chronic heart failure (CHF). The FPGA-based wireless LAN l... Read More about FPGA design and implementation for EIT data acquisition.

A real-time multi-channel monitoring system for stem cell culture process (2008)
Journal Article
Yue, X., Drakakis, E., Lim, M., Radomska, A., Ye, H., Mantalaris, A., …Cass, A. (2008). A real-time multi-channel monitoring system for stem cell culture process. IEEE Transactions on Biomedical Circuits and Systems, 2(2), 66-77. https://doi.org/10.1109/TBCAS.2008.925639

A novel, up to 128 channels, multi-parametric physiological measurement system suitable for monitoring hematopoietic stem cell culture processes and cell cultures in general is presented in this paper. The system aims to measure in real-time the most... Read More about A real-time multi-channel monitoring system for stem cell culture process.

Neural networks for improved text-independent speaker identification (2002)
Journal Article
Yue, X., Ye, D., Zheng, C., & Wu, X. (2002). Neural networks for improved text-independent speaker identification. IEEE Engineering in Medicine and Biology Magazine, 21(2), 53-58. https://doi.org/10.1109/MEMB.2002.1000186

In this article, we consider the binary partitioned approach with pattern index information, propose an neural network array (NNA) that performs the pattern recognition task by combining the binary partitioned approach with decision trees, and verify... Read More about Neural networks for improved text-independent speaker identification.