The University of Southampton
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Electronics and Computer Science
Telephone:
+442380599047
Email:
asw@ecs.soton.ac.uk

Dr Alex Weddell MEng, PhD, FHEA, MIEEE

http://www.linkedin.com/in/alexweddell
https://www.arm.ecs.soton.ac.uk/people/alex-weddell/
https://twitter.com/alex_weddell
  • Technical Manager of Arm-ECS Research Centre
  • ECS Academic Integrity Officer
  • FEPS Faculty Academic Integrity Officer
  • Chair of University of Southampton Academic Integrity Network
  • Associate Editor of IET Circuits, Devices and Systems
  • SEMS Group Webmaster

Alex Weddell is a Lecturer (Assistant Professor) in the Smart Electronic Materials and Systems Research Group, in the School of Electronics and Computer Science at the University of Southampton, UK. The school is the best in the UK for the quality and volume of research in Electrical and Electronic Engineering (REF 2014). He is the Technical Manager of the ARM-ECS Research Centre and a member of the management group for the Centre for IoT and Pervasive Systems. He serves as Associate Editor for the IET Circuits, Devices & Systems journal.

His main research interests are in wireless sensing, energy harvesting systems, and intelligent sensing for monitoring the health of machines. He is most interested in research that's aimed at solving real problems, and demonstrated using physical prototypes. He has graduated two PhD students and is currently supervising (or co-supervising) a further five.

Alex leads two second-year modules on Advanced Electronic Systems and Computer Engineering, and teaches a third-year undergraduate module on Embedded Networked Systems and an MSc module on IoT Networks. He supervises many practical third-year individual projects, fourth-year industrial Group Design projects, and MSc summer projects.

He was awarded the MEng Electronic Engineering (first-class honours) at the University of Southampton in 2005, followed by a PhD, thesis entitled "A comprehensive scheme for reconfigurable energy-aware wireless sensor nodes", in 2010. He contributed to the Data Information Fusion Defence Technology Centre (DIF DTC) 'Adaptive Energy-Aware Sensor Networks' project and worked under the EPSRC platform grant 'New Directions for Intelligent Sensors'. He has experience with a range of energy harvesting devices and has developed a platform which supports a mix of energy sources to power an energy-aware wireless sensor node. He worked on the 'Next Generation Energy-Harvesting Electronics: Holistic Approach' project, looking at energy device modelling and system-level design approaches.before being appointed as a Lecturer in February 2013.

He is currently a co-investigator on an EU Clean Sky 2 project "Intelligent Integrated Bearing System", developing self-powered smart bearings for jet engines. He is also a co-investigator on the EU Horizon 2020 project "EnABLES: European Infrastructure Powering the Internet of Things" and the EPSRC Platform project "Wearable and Autonomous Computing for Future Smart Cities".

Alex is also passionate about outreach. He runs electronics activities for the annual Electronics & Computer Science Taster Course, and has led workshops for A-level Physics and Computer Science teachers, and other teachers' CPD activities aiming to get hands-on electronics into the classroom. This work was recognised when the team was nominated for the 2017 Vice-Chancellor's Award for Collegiality. He contributed to development of Southampton's A-level Physics: Music Mixer and A-level Computing: Logic & Arithmetic kits, which won the 2019 Vice-Chancellor's Award in Public Engagement and Outreach.

Research

Research interests

  • Energy Harvesting
  • Internet of Things
  • Power Conversion
  • Energy Management/Storage
  • Condition Monitoring
  • System Lifetime Modelling and Extension

Teaching

Publications

Merrett, Geoff V., Weddell, Alex S., Harris, Nick R., White, Neil M. and Al-Hashimi, Bashir M. (2006) The Unified Framework for Sensor Networks: A Systems Approach University of Southampton

Weddell, Alexander S., Merrett, Geoff V., Harris, Nick R. and Al-Hashimi, Bashir M. (2008) Energy Harvesting and Management for Wireless Autonomous Sensors. Measurement + Control, 41 (4), 104-108.

Weddell, Alex S., Harris, Nick R. and White, Neil M. (2008) Alternative Energy Sources for Sensor Nodes: Rationalized Design for Long-Term Deployment. International Instrumentation and Measurement Technology Conference, Victoria, British Columbia, Canada. 11 - 14 May 2008. pp. 1370-1375 . (Submitted)

Maunder, R. G., Weddell, A. S., Merrett, G. V., Al-Hashimi, B. M. and Hanzo, L. (2008) Iterative Decoding for Redistributing Energy Consumption in Wireless Sensor Networks. International Conference on Computer Communications and Networks, St. Thomas, U.S. Virgin Islands. 02 - 06 Aug 2008.

Merrett, Geoff V., Weddell, Alexander S., Lewis, Adam P., Harris, Nick R., Al-Hashimi, Bashir M. and White, Neil M. (2008) An Empirical Energy Model for Supercapacitor Powered Wireless Sensor Nodes. 17th International IEEE Conference on Computer Communications and Networks, St Thomas, Virgin Islands (), United States. 02 - 06 Aug 2008.

Merrett, Geoff V, Weddell, Alex S., Harris, Nick R, Al-Hashimi, Bashir M and White, Neil M (2008) A Structured Hardware/Software Architecture for Embedded Sensor Nodes. 17th International Conference on Computer Communications and Networks, St Thomas, Virgin Islands (), United States. 02 - 06 Aug 2008.

Merrett, Geoff V., Weddell, Alex S., Berti, Luca, Harris, Nick R., White, Neil M. and Al-Hashimi, Bashir M. (2008) A Wireless Sensor Network for Cleanroom Monitoring. Eurosensors 2008, Dresden, Germany. 06 - 10 Sep 2008. pp. 1553-1556 .

Weddell, A.S., Harris, N.R. and White, N.M. (2008) An efficient indoor photovoltaic power harvesting system for energy-aware wireless sensor nodes. Eurosensors 2008, Dresden, Germany. 06 - 10 Sep 2008. 4 pp .

Weddell, Alex, Grabham, Neil, Harris, Nick and White, Neil (2008) Energy-Harvesting Sensor Nodes. Wireless Sensing Demonstrator Showcase, NPL. (In Press)

Weddell, Alex S., Merrett, Geoff V., Harris, Nick R. and White, Neil M. (2009) Energy Devices for Sensor Networks: Properties for Simulation and Deployment. Wireless Communications, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology (Wireless VITAE); Special Session: Energy-Harvesting Wireless Sensor Networks, Aalborg, Denmark. 16 - 19 May 2009. pp. 26-30 . (In Press)

Weddell, A. S., Teacy, W. T. L., Grabham, N. J., Merrett, G. V., Harris, N. R., Rogers, A., White, N. M. and Jennings, N. R. (2009) Plug-and-Play Power Resources and Agent-Based Coordination for Energy-Aware Wireless Sensor Nodes. WiSIG Wireless Sensing Showcase 2009, National Physical Laboratory, Teddington, United Kingdom.

Merrett, Geoff, Weddell, Alex and Harris, Nick (2010) Wireless Devices and Sensor Networks. In, Beeby, Steve and White, Neil (eds.) Energy Harvesting for Autonomous Systems. Artech House, pp. 7-44.

Wang, Leran, Kazmierski, Tom, Al-Hashimi, Bashir, Weddell, Alex, Merrett, Geoff and Ayala Garcia, Ivo (2011) Accelerated simulation of tunable vibration energy harvesting systems using a linearised state-space technique. Design, Test and Automation in Europe (DATE 2011), Grenoble, France. 14 - 18 Mar 2011.

Weddell, Alex, Merrett, Geoff and Al-Hashimi, Bashir (2011) Ultra low-power photovoltaic MPPT technique for indoor and outdoor wireless sensor nodes. Design, Automation and Test in Europe (DATE), Grenoble, France. 14 - 18 Mar 2011. 4 pp .

Weddell, Alex, Merrett, Geoff V., Kazmierski, Tom and Al-Hashimi, Bashir (2011) Accurate supercapacitor modeling for energy-harvesting wireless sensor nodes. IEEE Transactions on Circuits and Systems II: Express Briefs, 58 (12), 911-915. (doi:10.1109/TCSII.2011.2172712).

Weddell, Alex S., Merrett, Geoff V. and Al-Hashimi, Bashir M. (2012) Photovoltaic sample-and-hold circuit enabling MPPT indoors for low-power systems. IEEE Transactions on Circuits and Systems I: Regular Papers, 59 (6), 1196-1204. (doi:10.1109/TCSI.2011.2173393).

Weddell, Alexander Stewart (2010) A comprehensive scheme for reconfigurable energy-aware wireless sensor nodes. University of Southampton, School of Electronics and Computer Science, Doctoral Thesis, 229pp.

Kazmierski, Tom, Merrett, Geoff V., Wang, Leran, Al-Hashimi, Bashir, Weddell, Alex and Ayala Garcia, Ivo (2012) Modeling of Wireless Sensor Nodes Powered by Tunable Energy Harvesters: HDL-Based Approach. IEEE Sensors Journal, 12 (8), 2680-2689. (doi:10.1109/JSEN.2012.2196037).

Merrett, Geoff V. and Weddell, Alex S. (2012) Supercapacitor leakage in energy-harvesting sensor nodes: fact or fiction? International Workshop Algorithms and Concepts for Networked Sensing Systems Powered by Energy Harvesters 2012 (EnHaNSS'12), Antwerp, Belgium. 10 Jun 2012. 5 pp .

Weddell, Alex S., Merrett, Geoff V., Barrow, Stuart and Al-Hashimi, Bashir M. (2012) Vibration-powered sensing system for engine condition monitoring. IET Wireless Sensor Systems 2012, London, United Kingdom. 17 - 18 Jun 2012. 5 pp .

Weddell, Alex S., Zhu, Dibin, Merrett, Geoff V., Beeby, S.P. and Al-Hashimi, B.M. (2012) A practical self-powered sensor system with a tunable vibration energy harvester. PowerMEMS 2012, Atlanta, United States. 02 - 05 Dec 2012. 4 pp .

Weddell, Alexander S., Magno, Michele, Merrett, Geoff V., Brunelli, Davide, Al-Hashimi, Bashir and Benini, Luca (2013) A Survey of Multi-Source Energy Harvesting Systems. Design, Automation and Test in Europe (DATE), Grenoble, France. 18 - 22 Mar 2013. 4 pp . (doi:10.7873/DATE.2013.190).

Beeby, S.P., Wang, Leran, Zhu, Dibin, Weddell, Alex, Merrett, Geoff V., Stark, Bernard, Szarka, Gyorgy and Al-Hashimi, Bashir M. (2013) A comparison of power output from linear and non-linear kinetic energy harvesters using real vibration data. Smart Materials and Structures, 22 (7), 75022. (doi:10.1088/0964-1726/22/7/075022).

Weddell, Alex S., Zhu, Dibin, Merrett, Geoff V., Beeby, Stephen P. and Al-Hashimi, Bashir M. (2013) Tunable vibration energy harvester. 1st International Workshop on Energy Neutral Sensing Systems (ENSsys 2013), Rome, Italy. 14 Nov 2013. (doi:10.1145/2534208.2534226).

Lau, Sei Ping, Merrett, Geoff V., Weddell, Alex S. and White, Neil M. (2014) StreetlightSim: a simulation environment to evaluate networked and adaptive street lighting. IEEE Asia Pacific Conference on Wireless and Mobile Technologies 2014, Bali, Indonesia. 27 - 29 Aug 2014. 6 pp . (Submitted)

Lau, Sei Ping, Weddell, Alex S., Merrett, Geoff V. and White, NM (2014) Energy-neutral solar-powered street lighting with predictive and adaptive behaviour. 2nd International Workshop on Energy Neutral Sensing Systems (ENSsys 2014), Memphis, United States. 06 Nov 2014. pp. 13-18 . (doi:10.1145/2675683.2675690).

Balsamo, Domenico, Weddell, Alex, Merrett, Geoff V., Al-Hashimi, Bashir M., Brunelli, Davide and Benini, Luca (2015) Hibernus: sustaining computation during intermittent supply for energy-harvesting systems. IEEE Embedded Systems Letters, 7 (1), 15-18. (doi:10.1109/LES.2014.2371494).

Lau, Sei Ping, Merrett, Geoff V., Weddell, Alex S. and White, Neil M. (2015) A traffic-aware street lighting scheme for smart cities using autonomous networked sensors. Computers & Electrical Engineering, 45, 192-207. (doi:10.1016/j.compeleceng.2015.06.011).

Tinsley, Nick F., Witts, Stuart T., Ansell, Jacob M. R., Barnes, Emily, Jenkins, Simeon M., Raveendran, Dhanushan, Merrett, Geoff V. and Weddell, Alex S. (2015) Poster Abstract: Enspect—Simplifying the Design of Energy Harvesting Systems. 13th ACM Conference on Embedded Networked Sensor Systems (SenSys 2015), Korea, Republic of, Korea, Republic of. 01 - 04 Nov 2015. 2 pp . (In Press) (doi:10.1145/2809695.2817887).

Lau, Sei Ping, Weddell, Alex S., White, Neil M. and Merrett, Geoff V. (2015) Poster Abstract: Solar-Powered Adaptive Street Lighting Evaluated with Real Traffic and Sunlight Data. 13th ACM Conference on Embedded Networked Sensor Systems (SenSys 2015), Korea, Republic of, Korea, Republic of. 01 - 04 Nov 2015. 2 pp . (In Press) (doi:10.1145/2809695.2817886).

Tinsley, Nick F., Witts, Stuart T., Ansell, Jacob M. R., Barnes, Emily, Jenkins, Simeon M., Raveendran, Dhanushan, Merrett, Geoff V. and Weddell, Alex S. (2015) Enspect: a Complete Tool using Modeling and Real Data to Assist the Design of Energy Harvesting Systems. 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Seoul, Korea, Republic of. 6 pp . (doi:10.1145/2820645.2820648).

Savanth, Anand, Weddell, Alex, Myers, James, Flynn, David and Al-Hashimi, Bashir (2015) Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design. 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Seoul, Korea, Republic of. 6 pp . (In Press) (doi:10.1145/2820645.2820653).

Lidtke, Aleksander A., Rumpf, Clemens, Tatnall, Adrian, Lewis, Hugh G., Walker, Scott J., Taylor, Mia, Fear, Robert C., Weddell, Alex S., Maunder, Robert G. and Bantock, James R.B. (2015) Enhancing spaceflight safety with UOS3 cubesat. 1st Symposium on Space Educational Activities, Padova, Italy. 09 - 12 Dec 2015.

Balsamo, Domenico, Das, Anup, Weddell, Alex, Brunelli, Davide, Al-Hashimi, Bashir M., Merrett, Geoff V. and Benini, Luca (2016) Graceful performance modulation for power-neutral transient computing systems. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 35 (5), 738-749, [7403941]. (doi:10.1109/TCAD.2016.2527713).

Balsamo, Domenico, Weddell, Alex S., Das, Anup, Rodriguez Arreola, Alberto, Brunelli, Davide, Al-Hashimi, Bashir M., Merrett, Geoff V. and Benini, Luca (2016) Hibernus++: a self-calibrating and adaptive system for transiently-powered embedded devices. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 35 (12), 1968-1980. (doi:10.1109/TCAD.2016.2547919).

Rumpf, Clemens, Lidtke, Aleksander, Weddell, Alex and Maunder, Rob (2016) Enhancing microelectronics education with large-scale student projects. 11th IEEE European Workshop on Microelectronics Education, Southampton, United Kingdom. 10 - 12 May 2016. 6 pp .

Rodriguez Arreola, Alberto, Balsamo, Domenico, Das, Anup, Weddell, Alex S., Brunelli, Davide, Al-Hashimi, Bashir and Merrett, Geoff (2015) Approaches to Transient Computing for Energy Harvesting Systems - A Quantitative Evaluation. ENSsys '15 Proceedings of the 3rd International Workshop on Energy Harvesting Energy Neutral Sensing Systems, Seoul, Korea, Republic of. 01 - 04 Nov 2015. pp. 3-8 . (doi:10.1145/2820645.2820652).

Savanth, Parameshwarappa, Myers, James, Weddell, Alex, Flynn, David and Al-Hashimi, Bashir (2017) A 0.68nW/kHz supply-independent relaxation oscillator with ±0.49%/V and 96ppm/C stability. International Solid-State Circuits Conference (ISSCC 2017), San Francisco, United States. 05 - 09 Feb 2017. 3 pp .

Savanth, Parameshwarappa, Weddell, Alex, Myers, James, Flynn, David and Al-Hashimi, Bashir (2017) A 50nW voltage monitor scheme for minimum energy sensor systems. 30th International Conference on VLSI Design (VLSID 2017), Hyderabad, India. 07 - 11 Jan 2017. 6 pp .

Rodriguez Arreola, Alberto, Balsamo, Domenico, Zhenhua, Luo, Beeby, Stephen, Merrett, Geoffrey and Weddell, Alexander (2017) Dataset supporting the Paper titled: Intermittently-Powered Energy Harvesting Step Counter for Fitness Tracking. University of Southampton doi:10.5258/SOTON/405149 [Dataset]

Rodriguez Arreola, Alberto, Balsamo, Domenico, Zhenhua, Luo, Beeby, Stephen, Merrett, Geoff V. and Weddell, Alex S. (2017) Intermittently-powered energy harvesting step counter for fitness tracking. IEEE Sensors Applications Symposium (SAS) 2017, Rowan Univeristy, Glassboro, United States. 13 - 15 Mar 2017.

Boyle, James, Reeve, Jeffrey and Weddell, Alexander (2017) Dataset for DiStiNCT: Synchronizing Nodes with Imprecise Timers in Distributed Wireless Sensor Networks. University of Southampton doi:10.5258/SOTON/D0021 [Dataset]

Boyle, James, Reeve, Jeffrey and Weddell, Alexander (2017) DiStiNCT: Synchronizing nodes with imprecise timers in distributed wireless sensor networks. IEEE Transaction on Industrial Informatics. (doi:10.1109/TII.2017.2689330).

Zaghari, Bahareh, Weddell, Alexander, White, Neil, Bashir, Imran, Harvey, Terence and Wang, Ling (2017) Integrated smart bearings for next generation aero-engines.: Part II: energy harvesting and wireless communication development. In Integrated smart bearings for next generation aero-engines. Part II: energy harvesting and wireless communication development.

Bashir, Imran, Wang, Ling, Harvey, Terence, Zaghari, Bahareh, Weddell, Alexander and White, Neil (2017) Integrated smart bearings for next generation aero-engines Part 1: Development of a sensor suite for automatic bearing health monitoring. In WCCM2017. 12 pp .

Savanth, Parameshwarappa Anand, Kumar, Weddell, Alexander, Myers, James, Flynn, David and Al-Hashimi, Bashir (2017) Integrated reciprocal conversion with selective direct operation for energy harvesting systems. IEEE Transactions on Circuits and Systems I: Regular Papers, 64 (9), 2370-2379. (doi:10.1109/TCSI.2017.2707304).

Cai, Yunpeng, Savanth, Parameshwarappa Anand, Kumar, Prabhat, Pranay, Myers, James, Weddell, Alexander and Kazmierski, Tomasz (2017) Evaluation and analysis of single-phase clock flip-flops for NTV applications. In 2017 27th International Symposium on Power and Timing Modeling, Optimization and Simulation (PATMOS). IEEE. 6 pp . (doi:10.1109/PATMOS.2017.8106962).

Balsamo, Domenico, Merrett, Geoff V., Zaghari, Bahareh, Wei, Yang, Ramchurn, Sarvapali, Stein, Sebastian, Weddell, Alexander and Beeby, Stephen (2017) Wearable and autonomous computing for future smart cities: open challenges. In 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM). IEEE. 5 pp . (doi:10.23919/SOFTCOM.2017.8115596).

Rodriguez Arreola, Alberto, Balsamo, Domenico, Merrett, Geoff and Weddell, Alexander (2017) Dataset supporting: A Generic Middleware for External Peripheral State Retention in Transiently-Powered Sensor Systems. University of Southampton doi:10.5258/SOTON/D0264 [Dataset]

Rodriguez Arreola, Alberto, Balsamo, Domenico, Merrett, Geoffrey and Weddell, Alexander (2017) A generic middleware for external peripheral state retention in transiently-powered sensor systems. 5th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems: ENSsys 2017, , Delft, Netherlands. 05 - 08 Nov 2017. (doi:10.1145/3142992.3143000).

Zaghari, Bahareh, Weddell, Alexander and White, Neil (2017) Opportunities and challenges for energy harvesting sensor systems for harsh environments. In Proceedings of ENSsys’17. ACM. 3 pp . (In Press)

Savanth, Parameshwarappa Anand, Kumar, Bellanger, Mathieu, Weddell, Alexander, Myers, James and Kauer, Mathias (2018) Energy neutral sensor system with micro-scale photovoltaic and thermoelectric energy harvesting. In Journal of Physics. IOP. 3 pp .

Lukosevicius, Giedrius, Rodriguez Arreola, Alberto and Weddell, Alexander (2017) Using sleep states to maximize the active time of transient computing systems. In Proceedings of ENSsys’17. ACM. 6 pp . (In Press) (doi:10.1145/3142992.3142998).

Rodriguez Arreola, Alberto, Balsamo, Domenico, Merrett, Geoff and Weddell, Alexander (2018) Dataset supporting: RESTOP: Retaining External Peripheral State in Intermittently-Powered Sensor Systems. University of Southampton doi:10.5258/SOTON/D0373 [Dataset]

Rodriguez Arreola, Alberto, Balsamo, Domenico, Merrett, Geoff and Weddell, Alexander (2018) RESTOP: retaining external peripheral state in intermittently-powered sensor systems. Sensors, 18 (1), 1-19, [172]. (doi:10.3390/s18010172).

Harris, Nicholas, Weddell, Alexander, Alharby, Sultan and Reeve, Jeff (2018) The security trade-offs in resource constrained nodes for IoT application. 20th International Conference on Wireless Communication and Sensor Networks, , Dubai, United Arab Emirates. 22 - 24 Jan 2018.

Alharby, Sultan, Harris, Nicholas, Weddell, Alex and Reeve, Jeff (2018) The security trade-offs in resource constrained nodes for IoT application. International Journal of Electronics and Communication Engineering, 12 (1), 52-59. (doi:10.1999/1307-6892/10008451).

Harris, Nicholas, Alharby, Sultan, Weddell, Alexander and Reeve, Jeff (2018) Impact of duty cycle protocols on security cost of IoT. The 9th International Conference on Information and Communication Systems, Jordan, Irbid, Jordan. 03 - 04 Apr 2018. (In Press)

Bashir, Imran, Zaghari, Bahareh, Harvey, Terry J., Weddell, Alexander, White, Neil and Wang, Ling (2019) Design and testing of a sensing system for aero-engine smart bearings. Proceedings, 2 (13). (doi:10.3390/proceedings2131005).

Zaghari, Bahareh, Bashir, Imran, Weddell, Alexander, White, Neil, Harvey, Terry J. and Wang, Ling (2018) Oil-cooled thermoelectric energy harvesting for aero-engine sensing system. Proceedings, 2 (13), 1-4, [965]. (doi:10.3390/proceedings2130965).

Sliper, Sivert Tvedt, Balsamo, Domenico, Weddell, Alexander and Merrett, Geoff (2018) Enabling intermittent computing on high-performance out-of-order processors. 6th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems, , Shenzhen, China. 04 Nov 2018. 7 pp .

Balsamo, Domenico, Fletcher, Benjamin, James, Weddell, Alexander, Karatziolas, Giorgos, Al-Hashimi, Bashir and Merrett, Geoff (2019) Power neutral performance scaling with intrinsic MPPT for energy harvesting computing systems. ACM Transactions on Embedded Computing Systems, 17 (6), 93:1-93:25, [93]. (doi:10.1145/3281300).

Cai, Yunpeng, Savanth, Anand, Prabhat, Pranay, Myers, James, Weddell, Alexander and Kazmierski, Tomasz (2019) Ultra-low power 18-transistor fully-static contention-free single-phase clocked flip-flop in 65nm CMOS. IEEE Journal of Solid-State Circuits, 54 (2), 550-559. (doi:10.1109/JSSC.2018.2875089).

Balsamo, Domenico, Fletcher, Benjamin, James, Weddell, Alexander, Karatziolas, Giorgos, Al-Hashimi, Bashir and Merrett, Geoff (2018) Data-set supporting the article entitled "Power Neutral Performance Scaling with Intrinsic MPPT for Energy Harvesting Computing Systems". University of Southampton doi:10.5258/SOTON/D0679 [Dataset]

Weddell, Alex S. and Magno, Michele (2018) Energy harvesting for smart city applications. In 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE. pp. 111-117 . (doi:10.1109/SPEEDAM.2018.8445323).

Alharby, S., Weddell, A., Reeve, J. and Harris, N. (2018) The cost of link layer security in IoT embedded devices. IFAC-PapersOnLine, 51 (6), 72-77. (doi:10.1016/j.ifacol.2018.07.132).

Sliper, Sivert Tvedt (2019) Dataset supporting "Efficient State Retention through Paged Memory Management for Reactive Transient Computing". University of Southampton doi:10.5258/SOTON/D0835 [Dataset]

Sliper, Sivert T., Balsamo, Domenico, Nikoleris, Nikos, Wang, William, Weddell, Alexander and Merrett, Geoff (2019) Efficient state retention through paged memory management for reactive transient computing. Design Automation Conference, Las Vegas Convention Centre, Las Vegas, United States. 02 - 06 Jun 2019. 6 pp . (doi:10.1145/3316781.3317812).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2019) Millimeter-wave textile antenna for on-body RF energy harvesting in future 5G networks. Wireless Power Week 2019, IEEE Wireless Power Transfer Conference., IET Savoy Place, London, United Kingdom. 18 - 21 Jun 2019. pp. 1-4 . (In Press) (doi:10.1109/WPTC45513.2019.9055541).

Savanth, Parameshwarappa Anand, Kumar (2019) Dataset supporting: A sub-nW/kHz Relaxation Oscillator with Ratioed Reference and sub-Clock Power Gated Comparator. University of Southampton doi:10.5258/SOTON/D1017 [Dataset]

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Stephen (2019) Characterizing and modelling non-linear Rectifiers for RF energy harvesting. PowerMEMS 2019: International Conference on Micro and Nanotechnology for Power generation and Energy Conversion Applications, , Krakow, Poland. 03 - 06 Dec 2019. 5 pp .

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2019) Overcoming the efficiency barrier of textile antennas: a transmission lines approach. Proceedings, 32 (1), 1-5. (doi:10.3390/proceedings2019032018).

Wagih, Mahmoud, Komolafe, Abiodun, Zaghari, Bahareh, Weddell, Alex S. and Beeby, Steve (2020) A broadband outlook on flexible and textile RF energy harvesting and wireless power transfer: from near-field to 5G. Innovations in Large-Area Electronics Conference (innoLAE 2020), , Cambridge, United Kingdom. (In Press)

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) Rectennas for radio-frequency energy harvesting and wireless power transfer: A review of antenna design [Antenna applications corner]. IEEE Antennas and Propagation Magazine, 62 (5), 95-107, [9214948]. (doi:10.1109/MAP.2020.3012872).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) Sub-1 GHz flexible concealed rectenna yarn for high-efficiency wireless-powered electronic textiles. In 2020 14th European Conference on Antennas and Propagation (EuCAP). IEEE. 5 pp . (doi:10.23919/EuCAP48036.2020.9136041).

Sliper, Sivert Tvedt (2020) Dataset supporting "Fused: Closed-Loop Performance and Energy Simulation of Embedded Systems". University of Southampton doi:10.5258/SOTON/D1200 [Dataset]

Zaghari, Bahareh, Cottone, Francessco, Weddell, Alexander, Basset, Philippe, Lu, Yingxian and Beeby, Stephen (2020) Optimisation of nonlinear MEMS electrostatic kinetic energy harvesters to enable self-powered structural health monitoring. In 10th European Workshop on Structural Health Monitoring (EWSHM 2020).

Zaghari, Bahareh, Weddell, Alexander, Esmaeili, Kamran, Bashir, Imran, Harvey, Terence, White, Neil, Mirring, Patrick and Wang, Ling (2020) High temperature self-powered sensing system for a smart bearing in an aircraft jet engine. IEEE Transaction On Instrumentation and Measurement, 69 (9), 6165-6174, [8979443]. (doi:10.1109/TIM.2020.2971288).

Sliper, Sivert T., Cetinkaya, Oktay, Weddell, Alexander, Al-Hashimi, Bashir and Merrett, Geoff (2020) Energy-driven computing. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378 (2164), 1-4, [20190158]. (doi:10.1098/rsta.2019.0158).

Sliper, Sivert T., Wang, William, Nikoleris, Nikos, Weddell, Alexander and Merrett, Geoff (2020) Fused: closed-loop performance and energy simulation of embedded systems. 2020 IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS), , Boston, United States. 23 - 25 Aug 2020. pp. 110-112 . (doi:10.1109/ISPASS48437.2020.00046).

Balsamo, Domenico, Cetinkaya, Oktay, Rodriguez Arreola, Alberto, Wong, Samuel Chang Bing, Merrett, Geoff and Weddell, Alexander (2020) A control flow for transiently-powered energy harvesting sensor systems. IEEE Sensors Journal, 20 (18), 10687-10695, [9088951]. (doi:10.1109/JSEN.2020.2993213).

Wong, Samuel Chang Bing, Merrett, Geoff, Weddell, Alexander, Cetinkaya, Oktay, Balsamo, Domenico and Rodriguez Arreola, Alberto (2020) Dataset for: A Control Flow for Transiently-Powered Energy Harvesting Sensor Systems. University of Southampton doi:10.5258/SOTON/D1364 [Dataset]

Daulby, Timothy (2020) Dataset supporting the article "Improving the Forward Progress of Transient Systems". University of Southampton doi:10.5258/SOTON/D1394 [Dataset]

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) High-efficiency sub-1 GHz flexible compact rectenna based on parametric antenna-rectifier co-design. IEEE International Microwave Symposium: IEEE Microwave Week, Los Angeles, United States. (In Press)

Daulby, Timothy, Savanth, Anand, Merrett, Geoff and Weddell, Alex S. (2020) Improving the forward progress of transient systems. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. (doi:10.1109/TCAD.2020.2999913).

Wagih, Mahmoud, Hillier, Nicholas, Yong, Sheng, Weddell, Alex S. and Beeby, Steve (2020) Wearable e-textile wireless RF power supply based on a textile supercapacitor and a flexible rectenna filament. IEEE FLEPS 2020: IEEE International Conference on Flexible and Printable Sensors and Systems, , Manchester, United Kingdom. 16 - 19 Aug 2020. (In Press)

Mohamed, Mahmoud, Cetinkaya, Oktay, Zaghari, Bahareh, Weddell, Alexander and Beeby, Stephen (2020) Dataset for "Real-World Performance of Sub-1 GHz and 2.4 GHz Textile Antennas for RF-Powered Body Area Networks". University of Southampton doi:10.5258/SOTON/D1479 [Dataset]

Wagih, Mahmoud, Cetinkaya, Oktay, Zaghari, Bahareh, Weddell, Alex S. and Beeby, Steve (2020) Real-world performance of sub-1 GHz and 2.4 GHz textile antennas for RF-powered body area networks. IEEE Access, 8, 133746-133756, [9149585]. (doi:10.1109/ACCESS.2020.3011603).

Mohamed, Mahmoud, Hilton, Geoffrey S., Weddell, Alexander and Beeby, Stephen (2020) Data for Broadband Millimeter Wave Textile-Based Flexible Rectenna. University of Southampton doi:10.5258/SOTON/D1493 [Dataset]

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2020) Broadband millimeter-wave textile-based flexible rectenna for wearable energy harvesting. IEEE Transactions on Microwave Theory and Techniques, 68 (11), 4960-4972. (doi:10.1109/TMTT.2020.3018735).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) Millimeter wave power harvesting: A review. IEEE Open Journal of Antennas and Propagation. (doi:10.1109/OJAP.2020.3028220).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) Omnidirectional dual-polarized low-profile textile rectenna with over 50% efficiency for sub-μW/cm2 wearable power harvesting. IEEE Transactions on Antennas and Propagation. (doi:10.1109/TAP.2020.3030992). (In Press)

Weddell, Alexander, Beeby, Stephen, Zaghari, Bahareh and Stuikys, Aleksas (2020) Dataset for Efficient Energy Conversion in Electrically Assisted Bicycles Using a Switched Reluctance Machine under Torque Control. University of Southampton doi:10.5258/SOTON/D1617 [Dataset]

Daulby, Timothy, Weddell, Alexander, Merrett, Geoff and Savanth, Anand (2020) Comparing NVM technologies through the lens of Intermittent computation. In ENSsys 2020 - Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems. ACM. 77–78 . (doi:10.1145/3417308.3430268).

Zhan, Jie, Weddell, Alexander and Merrett, Geoff (2020) Adaptive energy budgeting for atomic operations in intermittently-powered systems. In ENSsys '20: Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems. ACM. pp. 82-83 . (doi:10.1145/3417308.3430277).

Wong, Samuel Chang Bing, Sliper, Sivert T., Wang, William, Weddell, Alexander, Gauthier, Stephanie and Merrett, Geoff (2020) Energy-aware HW/SW co-modeling of batteryless wireless sensor nodes. In ENSsys 2020 - Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems. ACM. pp. 57-63 . (doi:10.1145/3417308.3430272).

Mohamed, Mahmoud, Beeby, Stephen and Weddell, Alexander (2020) Data for Omnidirectional Dual-Polarized Low-Profile Textile Rectenna with over 50% Efficiency for Sub-µW/cm^2 Wearable Power Harvesting. University of Southampton doi:10.5258/SOTON/D1571 [Dataset]

Mohamed, Mahmoud, Beeby, Stephen and Weddell, Alexander (2020) Dataset for: Millimeter-Wave Power Harvesting: A Review. University of Southampton doi:10.5258/SOTON/D1568 [Dataset]

Mohamed, Mahmoud (2020) Data for Meshed High-Impedance Matching Network-Free Rectenna Optimized for Additive Manufacturing. University of Southampton doi:10.5258/SOTON/D1632 [Dataset]

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) Meshed high-impedance matching network-free rectenna optimized for additive manufacturing. IEEE Open Journal of Antennas and Propagation, 1-12. (doi:10.1109/OJAP.2020.3038001).

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2021) 2.4 GHz wearable textile antenna/rectenna for simultaneous information and power transfer. In 15th European Conference on Antennas and Propagation, EuCAP 2021. IEEE.. (doi:10.23919/EuCAP51087.2021.9411499).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2021) Powering e-textiles using a single thread radio frequency energy harvesting rectenna. International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles. 03 - 04 Nov 2020. (doi:10.3390/proceedings2021068016).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2021) Analyzing and maximizing the power harvesting efficiency of a textile rectenna through reflector-based shielding. In 15th European Conference on Antennas and Propagation, EuCAP 2021. IEEE.. (doi:10.23919/EuCAP51087.2021.9411484).

Wagih, Mahmoud, Hillier, Nicholas, Yong, Sheng, Weddell, Alex S. and Beeby, Steve (2021) RF-powered wearable energy harvesting and storage module based on e-textile coplanar waveguide rectenna and supercapacitor. IEEE Open Journal of Antennas and Propagation, 2, 302-314, [9354848]. (doi:10.1109/OJAP.2021.3059501).

Zhan, Jie (2021) Dataset for "Exploring the Effect of Energy Storage Sizing on Intermittent Computing System Performance". University of Southampton doi:10.5258/SOTON/D1785 [Dataset]

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2021) Millimeter-wave textile-based monopole antenna for wearable wireless power transmission. In General Assembly of the International Radio Science Union (URSI). IEEE. 4 pp . (In Press)

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2021) Dual-band dual-mode textile antenna/rectenna for Simultaneous Wireless Information and Power Transfer (SWIPT). IEEE Transactions on Antennas and Propagation, 69 (10), 6322-6332. (doi:10.1109/TAP.2021.3070230). (In Press)

Zhan, Jie, Merrett, Geoff and Weddell, Alexander (2021) Exploring the effect of energy storage sizing on intermittent computing system performance. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. (In Press)

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2021) Dispenser printed flexible rectenna for dual-ISM band high-efficiency supercapacitor charging. In 2021 IEEE Wireless Power Transfer Conference (WPTC). IEEE. 4 pp . (In Press)

Mohamed, Mahmoud (2021) Data suppporting "RF-Powered Wearable Energy Harvesting and Storage Module based on E-Textile Coplanar Waveguide Rectenna and Supercapacitor". University of Southampton doi:10.5258/SOTON/D1737 [Dataset]

Mohamed, Mahmoud (2021) Data associated with the Dual-Band Dual-Mode Textile Antenna/Rectenna for Simultaneous Wireless Information and Power Transfer. University of Southampton doi:10.5258/SOTON/D1777 [Dataset]

Komolafe, Abiodun, Zaghari, Bahareh, Torah, Russel, Weddell, Alexander, Khanbareh, Hamideh, Michail Tsikriteas, Zois, Vousden, Mark, Wagih, Mahmoud, Tronco Jurado, Ulises, Shi, Junjie, Li, Yi, Yang, Kai, Savelli, Guillaume, White, Neil and Beeby, Stephen (2021) E-textile technology review: from materials to applications. IEEE Access, 9, 97152-97179, [9471836]. (doi:10.1109/ACCESS.2021.3094303).

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2021) Dual-polarized wearable antenna/rectenna for full-duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT). IEEE Open Journal of Antennas and Propagation, 2, 844-857, [9492275]. (doi:10.1109/OJAP.2021.3098939).

Wagih, Mahmoud, Komolafe, Abiodun, Torah, Russel, Weddell, Alex S. and Beeby, Steve (2021) Screen printing reliable wearable microstrip antennas on rough textile substrates. In IEEE Antennas and Propagation Symposium. IEEE. pp. 1-2 . (In Press)

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2021) Millimeter wave power transmission for compact and large-area wearable IoT devices based on a higher-order mode wearable antenna. IEEE Internet of Things Journal. (doi:10.1109/JIOT.2021.3107594).

Mohamed, Mahmoud and Hilton, Geoffrey S. (2021) Data Supporting the Article: Dual-Polarized Wearable Antenna/Rectenna for Full-Duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT). University of Southampton doi:10.5258/SOTON/D1899 [Dataset]

Mohamed, Mahmoud and Hilton, Geoffrey S. (2021) Millimeter Wave Power Transmission for Compact and Large-Area Wearable IoT Devices based on a Higher-Order Mode Wearable Antenna Data. University of Southampton doi:10.5258/SOTON/D1931 [Dataset]

Wagih, Mahmoud, Savanth, Anand, Gamage, Sahan, Weddell, Alex S. and Beeby, Steve (2021) CMOS UHF RFID Rectifier Design and Matching: an Analysis of Process and Temperature Variations. In 2021 IEEE International Conference on RFID Technology and Applications (RFID-TA). IEEE.. (In Press)

Wong, Samuel Chang Bing (2020) Dataset for: Energy-aware HW/SW Co-modeling of Batteryless Wireless Sensor Nodes. University of Southampton doi:10.5258/SOTON/D1593 [Dataset]

Wagih, Mahmoud, Hillier, Nicholas, David George, Weddell, Alex S. and Beeby, Steve (2021) E-Textile RF energy harvesting and storage using organic-electrolyte carbon-based supercapacitors. 2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, , chongqing, China. 15 - 17 Nov 2021. 4 pp . (In Press)

Wagih, Mahmoud, Hilton, Geoffrey S., Weddell, Alex S. and Beeby, Steve (2021) 5G-enabled E-textiles based on a low-profile millimeter-wave textile antenna. In Engineering Proceedings. Multidisciplinary Digital Publishing Institute (MDPI).. (In Press)

Wagih, Mahmoud, Malik, Obaid, Weddell, Alex S. and Beeby, Steve (2021) E-Textile breathing sensor using fully-textile wearable antennas. In Engineering Proceedings. Multidisciplinary Digital Publishing Institute (MDPI)..

Wagih, Mahmoud, Yong, Sheng, Yang, Kai, Weddell, Alexander and Beeby, Steve (2021) Printed non-metallic textile-based carbon antenna for low-cost green wearable applications. In European Conference on Antennas and Propagation, 2022 (EuCAP). IEEE.. (In Press)

Wagih, Mahmoud, Hillier, Nicholas, Weddell, Alex S. and Beeby, Steve (2021) Textile-based radio frequency energy harvesting and storage using ultra-compact rectennas with high effective-to-physical area ratio. In 2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS). IEEE. 4 pp . (doi:10.1109/PowerMEMS54003.2021.9658367).

Sliper, Sivert Tvedt (2022) Dataset supporting the journal article "Pragmatic Memory-System Support for Intermittent Computing using Emerging Non-Volatile Memory". University of Southampton doi:10.5258/SOTON/D2186 [Dataset]

Wagih, Mahmoud, Komolafe, Abiodun, Weddell, Alex S. and Beeby, Steve (2022) Broadband compact substrate-independent textile wearable antenna for simultaneous near- and far-field wireless power transmission. IEEE Open Journal of Antennas and Propagation, 3, 398 - 411. (doi:10.1109/OJAP.2022.3167089).

Wagih, Mahmoud, Komolafe, Abiodun, Weddell, Alex S. and Beeby, Steve (2022) 1 μW-3.75 W dual-mode near/far-field wearable wireless power transfer using a hybrid rectenna. In IEEE Wireless Power Week (WPW 2022). IEEE. 4 pp .

Wagih, Mahmoud, Komolafe, Abiodun, Weddell, Alex S. and Beeby, Steve (2022) Watt-level low-SAR near-field wearable wireless power transfer using an all-textile receiver. In 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting. IEEE. 2 pp . (In Press) (doi:10.1109/MAP.2021.3121522).

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2022) Body-proximity effects on the input impedance of a complex-conjugate SWIPT textile rectenna. In IEEE Antennas and Propagation Symposium. IEEE. 2 pp . (In Press)

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2022) Towards multi-mode millimeter wave body area networks for information and power transmission: a co-existence study. In 2022 Mediterranean Microwave Symposium. IEEE. 4 pp . (In Press)

Sliper, Sivert T., Wang, William, Nikoleris, Nikos, Weddell, Alexander, Savanth, Anand, Prabhat, Pranay and Merrett, Geoff (2022) Pragmatic memory-system support for intermittent computing using emerging non-volatile memory. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. (doi:10.1109/TCAD.2022.3168263).

Contact

Telephone: +44 (0) 23 8059 9047

Email: asw@ecs.soton.ac.uk

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