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de Almeida, J. V., Gu, X., & Wu, K. (2024). SWIPT Base Stations for Battery-Free, Wirelessly Powered IoT Networks: A Review on Architectures, Circuits and Technologies. IEEE Microwave Magazine, 25(6), 22-40. External link
De Almeida, J. V., Gu, X., Mosso, M. M., Sartori, C. A. F., & Wu, K. (2022, June). Experimental Demonstration of Nonlinear Metasurfaces for High-Performance Low-Cost Near-Field Base Station [Paper]. IEEE/MTT-S International Microwave Symposium (IMS 2022), Denver, CO, USA. External link
de Almeida, J. V., Gu, X., Mosso, M. M., Sartori, C. A. F., & Wu, K. (2022). Nonlinear metasurfaces for health-monitoring magnetic induction-based SWIPT base stations. IEEE Transactions on Microwave Theory and Techniques, 71(1), 309-319. External link
de Almeida, J. V., Gu, X., Manhães Mosso, M., Sartori, C. A. F., & Wu, K. (2021). Nonlinear Metamaterial Lenses for Inductive Power Transmission Systems Using Duffing-Resonator Based Unit Cells. Multidisciplinary Scientific Journal, 4(4), 727-748. External link
Gu, X., Khazaka, R., & Wu, K. (2024, May). Diode Selection Strategies of RF Power Harvester to Improve Temperature Resilience of Battery-free Wireless Sensing [Paper]. 2024 IEEE Wireless Power Technology Conference and Expo (WPTCE 2024), Kyoto, Japan. External link
Gu, X., Almeida, J. V., Hemour, S., Khazaka, R., & Wu, K. (2024). Temperature-Stable Low-Power RF-to-dc Dickson Charge Pump Rectifiers for Battery-Free Sensing and IoT Systems. IEEE Journal of Radio Frequency Identification, 3423711 (12 pages). External link
Gu, X., Hemour, S., Khazaka, R., & Wu, K. Improving Temperature Stability of Dickson Charge Pump Rectifiers for Battery-Free Wireless Sensing Applications [Paper]. 2023 IEEE/MTT-S International Microwave Symposium (IMS 2023), San Diego, CA, USA. External link
Gu, X., Khazaka, R., & Wu, K. (2023, June). Single-Ended Reconfigurable Wireless Power Harvesting and Harmonic Backscattering [Paper]. IEEE Wireless Power Technology Conference and Expo (WPTCE 2023), San Diego, CA, USA (4 pages). External link
Gu, X., Hemour, S., & Wu, K. (2022). Far-Field Wireless Power Harvesting: Nonlinear Modeling, Rectenna Design, and Emerging Applications. Proceedings of the IEEE, 110(1), 56-73. External link
Gu, X., De Almeida, J. V., Hemour, S., Khazaka, R., & Wu, K. (2022, July). Thermal effects on low-power RF-to-dc voltage multiplier for battery-free sensing and IoT [Paper]. Wireless Power Week (WPW 2022), Bordeaux, France. External link
Gu, X., Grauwin, L., Dousset, D., Hemour, S., & Wu, K. (2021). Dynamic Ambient RF Energy Density Measurements of Montreal for Battery-Free IoT Sensor Network Planning. IEEE Internet of Things Journal, 8(17), 13209-13221. External link
Gu, X., De Almeida, J. V., & Wu, K. (2021, December). Multi-Stage Rectifier Enabled Battery-Free Sensor Platform Utilizing Ambient RF Energy [Paper]. IEEE MTT-S International Microwave and RF Conference (IMARC 2021), Kanpur, India (4 pages). External link
Gu, X., De Almeida, J. V., Hemour, S., Khazaka, R., & Wu, K. (2021). Nonlinearity and parameterization of Schottky diodes-based battery-free harmonic transponder for millimeter-wave 5G applications. Applied Physics Letters, 119(6), 5 pages. External link
Gu, X., Lin, W., Hemour, S., & Wu, K. (2021). Readout Distance Enhancement of Battery-Free Harmonic Transponder. IEEE Transactions on Microwave Theory and Techniques, 69(7), 3413-3424. External link
Gu, X., Burasa, P., Hemour, S., & Wu, K. (2021). Recycling Ambient RF Energy: Far-Field Wireless Power Transfer and Harmonic Backscattering. IEEE Microwave Magazine, 22(9), 60-78. External link
Gu, X. (2020). Towards Battery-Free Internet of Things (IoT) Sensors: Far-Field Wireless Power Transfer and Harmonic Backscattering [Ph.D. thesis, Polytechnique Montréal]. Available
Gu, X., Dousset, D., Wu, K., Grauwin, L., & Hemour, S. (2020, July). Ambient Radiofrequency Energy Mapping of Montreal for Far-Field Wireless Power Harvesting [Paper]. IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (IEEECONF 2020), Montréal, Québec. External link
Guo, L., Gu, X., Chu, P., Hemour, S., & Wu, K. (2020). Collaboratively Harvesting Ambient Radiofrequency and Thermal Energy. IEEE Transactions on Industrial Electronics, 67(5), 3736-3746. External link
Gu, X., & Wu, K. (2020). Enabling High-Efficiency Far-Field Radiofrequency Energy Harvesting for 5G-Compatible IoT Applications. (Technical Report). External link
Gu, X., Guo, L., Hemour, S., & Wu, K. (2020). Optimum Temperatures for Enhanced Power Conversion Efficiency (PCE) of Zero-Bias Diode-Based Rectifiers. IEEE Transactions on Microwave Theory and Techniques, 68(9), 4040-4053. External link
Gu, X., Wu, K., & Hemour, S. (2020, July). Remote Temperature Sensing Based on Battery-Free Harmonic Backscattering [Paper]. IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (IEEECONF 2020), Montréal, Québec. External link
Gu, X., Hemour, S., & Wu, K. (2019, June). Improving Conversion Loss Performance of Fully Passive Harmonic Transponder at Low Temperature [Paper]. IEEE Wireless Power Transfer Conference (WPTC 2019), London, UK. External link
Gu, X., Hemour, S., & Wu, K. (2019, September). Low thermally activated schottky barrier rectifier: A new class of energy harvester [Paper]. IEEE International Conference on RFID Technology and Applications (RFID-TA 2019), Pisa, Italy. External link
Gu, X., Hemour, S., & Wu, K. (2019, October). Reconfigurable Nonlinear Circuit for Wireless Power Harvesting and Backscattering [Paper]. 49th European Microwave Conference (EuMC 2019), Paris, France. External link
Gu, X., Guo, L., Hemour, S., & Wu, K. (2018, August). Analysis and Exploitation of Diplexer-based Fully Passive Harmonic Transponder for 5G Applications [Paper]. IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G), Dublin, Ireland (3 pages). External link
Gu, X., Hemour, S., & Wu, K. (2018, November). Enabling Far-Field Ambient Energy Harvesting Through Multi-Physical Sources [Paper]. Asia-Pacific Microwave Conference (APMC 2018), Kyoto, Japan. External link
Gu, X., Liu, W., Guo, L., Hemour, S., Formosa, F., Badel, A., & Wu, K. (2018). Hybridization of integrated microwave and mechanical power harvester. IEEE Access, 6, 13921-13930. External link
Gu, X., Hemour, S., Guo, L., & Wu, K. (2018). Integrated Cooperative Ambient Power Harvester Collecting Ubiquitous Radio Frequency and Kinetic Energy. IEEE Transactions on Microwave Theory and Techniques, 66(9), 4178-4190. External link
Gu, X., Guo, L., Hemour, S., & Wu, K. (2018, June). Novel Diplexer-based Harmonic Transponder for 5G-compatible IoT Applications [Paper]. IEEE Wireless Power Transfer Conference (WPTC 2018), Montréal, Qc, Canada (4 pages). External link
Guo, L., Gu, X., Hemour, S., & Wu, K. (2018, May). Reactive frequency downconverter for low power harvesting applications [Paper]. IEEE MTT-S International Wireless Symposium (IWS 2018), Chengdu, China (4 pages). External link
Gu, X., Hemour, S., & Wu, K. (2017, May). Integrated cooperative radiofrequency (RF) and kinetic energy harvester [Paper]. IEEE Wireless Power Transfer Conference (WPTC 2017), Taipei, Taiwan (3 pages). External link
Jde Almeida, J. V., Gu, X., Hussain, I., & Wu, K. (2022). High-Efficiency Moderate-Power Amplifier Using Packaged GaN Transistor With Improved Average PAE and Gain for Batteryless IoT Applications. IEEE Transactions on Microwave Theory and Techniques, 71(2), 628-639. External link
Micallef, T., Gu, X., & Wu, K. (2024, May). Electric Field Energy Harvesting from High-Voltage Power Lines for Batteryless LoRaWAN [Paper]. 2024 IEEE Wireless Power Technology Conference and Expo (WPTCE 2024, Kyoto, Japan. External link
Niotaki, K., Carvalho, N. B., Georgiadis, A., Gu, X., Hemour, S., Wu, K., Matos, D., Belo, D., Pereira, R., Figueiredo, R., Chaves, H., Mendes, B., Correia, R., Oliveira, A., Palazzi, V., Alimenti, F., Mezzanotte, P., Roselli, L., Benassi, F., ... Shinohara, N. (2023). RF Energy Harvesting and Wireless Power Transfer for Energy Autonomous Wireless Devices and RFIDs. IEEE Journal of Microwaves, 3(2), 763-782. External link
Palazzi, V., Correia, R., Gu, X., Hemour, S., Wu, K., Costanzo, A., Masotti, D., Fazzini, E., Georgiadis, A., Kazemi, H., Pereira, R., Shinohara, N., Schreurs, D., Chiao, J.-C., Takacs, A., Dragomirescu, D., & Carvalho, N. B. (2023). Radiative Wireless Power Transfer: Where We Are and Where We Want to Go. IEEE Microwave Magazine, 24(2), 57-79. External link
