IEEE FLEPS’ Post

We encourage you to explore one of the July TCAS-I Paper Highlight videos "A High Sensitivity CMOS Rectifier for 5G mm-Wave Energy Harvesting". 📝 Authored by: Edoh Shaulov, Tal Elazar, Eran Socher Harvesting RF cellular power has vast potential to reduce battery reliance in low-power, wireless electronics. However, the challenge of efficiently converting the low-power RF signal to dc power remains a challenge, especially in the mm-Wave domain and, even more so, for CMOS. This work proposes a power-splitting and voltage-summation rectifier design technique that allows one to target a specific output voltage while optimizing power conversion efficiency (PCE). By splitting the input power to n rectifiers and series connecting them in dc, PCE saturation is mitigated and high output voltage can be achieved. This technique is thoroughly investigated in simulation and modelling, and validated by fabrication (TSMC 65 nm) and measurements where the proposed design achieves a record 400 mV output voltage and 15% PCE for -10 dBm input power at 28 GHz. Watch the video to learn more 👇 🔗 Read the paper on IEEE Xplore here: https://loom.ly/FhrLOjY #IEEECASS #TCASI #JulyHighlight

📶 #DiscoverSoitec: Enhancing billions of everyday lives, powering the future with our unique #semiconductor technologies ! The Connect #POI products, Piezoelectric materials On Insulators substrates are the unsung heroes behind high-performance RF filters in telecommunications. These advanced materials have the superpower of converting electrical signals into mechanical vibrations, minimizing energy loss and ensuring efficiency. With exceptional temperature stability and precision, they provide top-notch selectivity and efficiency, filtering multiple bands with ease. Plus, their compatibility with advanced fabrication techniques means they can be crafted in mass with precision. Additionally, they block electromagnetic interference, keeping signals crisp and improving battery life. This months, Soitec's experts will be at IEEE Ultrasonics, Ferroelectrics, & Frequency Control Society (UFFC-S) #UFFCJS 2024 Symposium in Taiwan to showcase our #connect products https://lnkd.in/gJmwPddF #semiconductor #UFFCJS #ultrasonics #ConnectPOI #POI

Excited to announce a major milestone! My first-authored paper, "Cascaded Sliding Mode Voltage Controller and Model Reference Adaptive Current Controller for Regulating a MIMO DC-DC Boost Converter," is now published! 🎉 This accomplishment wouldn't be possible without the incredible guidance of Professor Naseem Daher. Under his supervision, I presented my undergraduate research on power electronics and industrial automation at the IEEE IMCET 4th Conference this year, showcasing my dedication to these fields. The research delves into the intricacies of voltage and current control in a MIMO DC-DC Boost Converter, showcasing innovative solutions through a cascaded sliding mode controller (SMC) for voltage regulation and a model reference adaptive controller (MRAC) for current regulation in a multiple-inputs multiple-outputs (MIMO) DC-DC boost converter. The journey from concept to publication has been both challenging and rewarding. I'm immensely grateful for this transformative experience that has shaped my understanding of these fields. For those interested, the paper is available for review at the below link. I welcome your discussions, collaborations, and feedback! #ResearchPublication #AcademicAchievement #IEEE #IMCET #UndergraduateResearch #PowerElectronics #IndustrialAutomation

POWER ELECTRONICS a key knowledge for energy transition.

Grateful to share that our paper entitled "Enhanced Dynamic Regulation in Buck Converters: Integrating Input-Voltage Feedforward with Voltage-Mode Feedback", has been accepted for publication in the multidisciplinary IEEE Access Journal! You can read the early access version through this link: https://lnkd.in/eHB9Gsxz I want to extend my heartfelt thanks to my colleagues, Ahmed Abuelnasr, Mohamed Ali, Ahmad Hassan, Aref Trigui, and my PhD advisors Dr. Ahmed Ragab, Prof. Mohamad Sawan, and Prof. Yvon Savaria, whose guidance and support were instrumental in this research, In this paper, our work focuses on enhancing the dynamic regulation of DC-DC converters, specifically when their power supply is exposed to overvoltage surges (±80 V/ms) as in the aerospace and automotive applications. Here, we propose a systematic method to combine input-voltage feedforward (IVFF) and voltage-mode feedback (VFB) controllers, aiming to enhance the closed-loop performance. This method help select the proper control parameters graphically to achieve strong dynamic stability across the full operating range regardless of practical implementation challenges. Moreover, we were able to fully integrate a type-III compensator with minimal costs thanks to the area optimization approach we proposed, achieving a 79% reduction in integration size compared to conventional designs. We experimentally verified in the paper that the combined-controller approach can entirely eliminate transient voltage spikes, offering up to 100% improvement in dynamic performance over a standalone VFB controller. #Research #PowerElectronics #ControlSystems #IEEE

Latest paper published in Power Electronic Devices and Components 👇 https://shorturl.at/dkquN Advanced voltage balancing techniques for series-connected SiC-MOSFET devices: A comprehensive survey by L F S Alves , P Lefranc , P-O Jeannin , B Sarrazin Grenoble Alpes University, CNRS, Grenoble INP, G2Elab, Grenoble 38000, France Highlights: - In addition to achieving a higher breakdown voltage, series-connected SiC-MOSFETs exhibit better on-resistance and higher current density compared to using a single higher voltage device. - Mismatch between device parameters, parasitic components, and gate signal timing delays are the most important causes related to the voltage-sharing performance of series-connected SiC-MOSFETs. - Due to the higher switching speed transition, some conventional voltage balancing techniques designed for Si-IGBTs and Si-MOSFETs are no longer suitable for SiC devices. - Active gate control methods rank among the predominant voltage balancing techniques for series-connected SiC-MOSFETs. #PED_C #series_connected #SiC_MOSFET #Voltage_balancing_techniques

I'm thrilled to share that my latest research paper, "Enhancing Driving Capability of On-Chip Switched Capacitor-Based Converter Using High-Speed NRTI Switching Scheme," has been published in IEEE! 📚✨ In this work, we've developed an on-chip DC-DC buck converter that pushes the boundaries of driving capability and efficiency. Using a high-speed Non-Overlapping Rotational Time Interleaving (NRTI) switching scheme, this converter, designed in a 65nm CMOS process, delivers an impressive step-down conversion from 2.5V to 1.15V with a maximum load current of 230mA. The result? A peak efficiency of 81.35% and ultra-low output ripple—all in a compact, on-chip design using a total 1.5nF on-chip capacitor. 💡🔋 Proud to contribute to the field of power management ICs for advanced applications! 🌐🔋 #IEEE #Research #DC_DC_Converter #Power_Management #CMOS #IIT_Kharagpur #ISRO #On_Chip_Converter

One of the 𝐩𝐫𝐨𝐦𝐢𝐬𝐢𝐧𝐠 advanced 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 in the RF filters' world is 𝐭𝐮𝐧𝐚𝐛𝐥𝐞 𝐑𝐅 𝐟𝐢𝐥𝐭𝐞𝐫𝐬 which have gained more interest in recent years because of their 𝒉𝒊𝒈𝒉𝒍𝒚 𝒇𝒂𝒗𝒐𝒓𝒂𝒃𝒍𝒆 𝒇𝒆𝒂𝒕𝒖𝒓𝒆𝒔 compared with traditional fixed structures. In general, the majority of the available tunable RF filters in both the literature and the 𝐦𝐚𝐫𝐤𝐞𝐭 (𝐟𝐞𝐰) focus on 𝐟𝐫𝐞𝐪𝐮𝐞𝐧𝐜𝐲 reconfiguration. Whereas, on the other hand, despite their 𝒌𝒆𝒚 𝒊𝒎𝒑𝒐𝒓𝒕𝒂𝒏𝒄𝒆 𝘪𝘯 𝘢 𝘸𝘪𝘥𝘦 𝘳𝘢𝘯𝘨𝘦 𝘰𝘧 𝘢𝘱𝘱𝘭𝘪𝘤𝘢𝘵𝘪𝘰𝘯𝘴, 𝐛𝐚𝐧𝐝𝐰𝐢𝐝𝐭𝐡 𝐭𝐮𝐧𝐚𝐛𝐥𝐞 𝐟𝐢𝐥𝐭𝐞𝐫𝐬 are not so common due to the 𝒄𝒉𝒂𝒍𝒍𝒆𝒏𝒈𝒊𝒏𝒈 𝒅𝒆𝒔𝒊𝒈𝒏 𝒂𝒏𝒅 𝒓𝒆𝒂𝒍𝒊𝒛𝒂𝒕𝒊𝒐𝒏. For high-performance applications, 𝐛𝐚𝐧𝐝𝐰𝐢𝐝𝐭𝐡 𝐫𝐞𝐜𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐛𝐥𝐞 𝒄𝒂𝒗𝒊𝒕𝒚-𝒃𝒂𝒔𝒆𝒅 𝒇𝒊𝒍𝒕𝒆𝒓𝒔 are more desirable than planar structures because of their 𝒍𝒐𝒘𝒆𝒓 𝒍𝒐𝒔𝒔 and capability to 𝒉𝒂𝒏𝒅𝒍𝒆 𝒉𝒊𝒈𝒉𝒆𝒓 𝒑𝒐𝒘𝒆𝒓 𝒍𝒆𝒗𝒆𝒍𝒔. However, unfortunately, we see that 𝐚𝐥𝐥 of the available waveguide-based bandwidth tunable filters suffer from 𝐦𝐚𝐣𝐨𝐫 𝐝𝐫𝐚𝐰𝐛𝐚𝐜𝐤𝐬, 𝘮𝘢𝘪𝘯𝘭𝘺 𝘳𝘦𝘭𝘢𝘵𝘦𝘥 𝘵𝘰 𝘵𝘩𝘦 𝘵𝘶𝘯𝘪𝘯𝘨 𝘮𝘦𝘤𝘩𝘢𝘯𝘪𝘴𝘮, including the 𝐬𝐥𝐨𝐰 𝐭𝐮𝐧𝐢𝐧𝐠 𝐬𝐩𝐞𝐞𝐝, 𝐥𝐚𝐫𝐠𝐞 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐭𝐮𝐧𝐢𝐧𝐠 𝐞𝐥𝐞𝐦𝐞𝐧𝐭𝐬, 𝐢𝐧𝐜𝐫𝐞𝐚𝐬𝐢𝐧𝐠 𝐥𝐨𝐬𝐬𝐞𝐬 𝐰𝐢𝐭𝐡 𝐭𝐮𝐧𝐢𝐧𝐠, and 𝐧𝐚𝐫𝐫𝐨𝐰 𝐭𝐮𝐧𝐢𝐧𝐠 𝐰𝐢𝐧𝐝𝐨𝐰𝐬. Aiming to overcome these 𝐥𝐢𝐦𝐢𝐭𝐚𝐭𝐢𝐨𝐧𝐬, in our work, published in the IEEE Microwave Theory & Technology Society 𝐈𝐄𝐄𝐄 𝐌𝐢𝐜𝐫𝐨𝐰𝐚𝐯𝐞 𝐚𝐧𝐝 𝐖𝐢𝐫𝐞𝐥𝐞𝐬𝐬 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐋𝐞𝐭𝐭𝐞𝐫𝐬 Special Issue of "𝐓𝐨𝐩 𝐈𝐌𝐒2023 𝐏𝐚𝐩𝐞𝐫𝐬", we presented a "𝐁𝐚𝐧𝐝𝐰𝐢𝐝𝐭𝐡-𝐑𝐞𝐜𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐛𝐥𝐞 𝐂𝐨𝐚𝐱𝐢𝐚𝐥 𝐁𝐚𝐧𝐝𝐩𝐚𝐬𝐬 𝐅𝐢𝐥𝐭𝐞𝐫 𝐖𝐢𝐭𝐡 𝐌𝐮𝐥𝐭𝐢𝐨𝐜𝐭𝐚𝐯𝐞 𝐓𝐮𝐧𝐢𝐧𝐠 𝐔𝐬𝐢𝐧𝐠 𝐚 𝐒𝐢𝐧𝐠𝐥𝐞 𝐄𝐥𝐞𝐦𝐞𝐧𝐭": https://lnkd.in/eRJQsZ9p This novel bandwidth tuning concept is based on the 𝐫𝐨𝐭𝐚𝐭𝐢𝐨𝐧 of coaxial resonators with reference to a 𝐟𝐢𝐱𝐞𝐝 iris structure, in order to 𝐜𝐡𝐚𝐧𝐠𝐞 the 𝐢𝐧𝐭𝐞𝐫-𝐫𝐞𝐬𝐨𝐧𝐚𝐭𝐨𝐫 𝐜𝐨𝐮𝐩𝐥𝐢𝐧𝐠 𝐬𝐭𝐫𝐞𝐧𝐠𝐭𝐡 and 𝐭𝐮𝐧𝐞 𝐭𝐡𝐞 𝐛𝐚𝐧𝐝𝐰𝐢𝐝𝐭𝐡, featuring 𝒇𝒂𝒔𝒕 𝒕𝒖𝒏𝒊𝒏𝒈 (𝘶𝘴𝘪𝘯𝘨 𝘰𝘯𝘭𝘺 1 𝘵𝘶𝘯𝘪𝘯𝘨 𝘦𝘭𝘦𝘮𝘦𝘯𝘵), 𝒔𝒕𝒂𝒃𝒍𝒆 𝒑𝒆𝒓𝒇𝒐𝒓𝒎𝒂𝒏𝒄𝒆 𝒘𝒊𝒕𝒉 𝒎𝒊𝒏𝒊𝒎𝒖𝒎 𝒅𝒆𝒕𝒆𝒓𝒊𝒐𝒓𝒂𝒕𝒊𝒐𝒏, and 𝒃𝒓𝒐𝒂𝒅 multioctave 𝒕𝒖𝒏𝒊𝒏𝒈 𝒓𝒂𝒏𝒈𝒆. You can find more details and other tunable filter designs here on my PhD thesis "𝐌𝐢𝐧𝐢𝐚𝐭𝐮𝐫𝐢𝐳𝐞𝐝 𝐇𝐢𝐠𝐡-𝐐 𝐓𝐮𝐧𝐚𝐛𝐥𝐞 𝐑𝐅 𝐅𝐢𝐥𝐭𝐞𝐫𝐬": https://lnkd.in/e3wgUdS5 Have a good read, and feel free to contact me for any queries. *This research work was conducted within TESLA project, supported in part by the European Union’s Horizon 2020 Research and Innovation Programme under the EU Marie Skłodowska-Curie actions. ENDONANO ITN-European Industrial Doctorate (EID).* #rf #microwave #filters #ims 

🔬📝 Exciting news! We've just published our latest paper : "Optimizing liquid-processed carbon nanotube photodetectors on various substrates". Our study showcases the potential of Multi-Wall Carbon Nanotubes (MWCNTs) for optoelectronic applications, demonstrating their efficiency as photo-collectors. We present two hybrid Si-MWCNTs photodetectors on n-silicon substrates coated with Si3N4 or SiO2 dielectrics, highlighting the very good performance of MWCNTs/Si3N4 devices with a peak Equivalent Quantum Efficiency (EQE) of 57% under UV illumination. Our investigation of the impact of MWCNTs on the dielectric characteristics of both substrates offers insights for future applications. Read the full paper here to learn more about our findings and the potential of MWCNTs in optoelectronics and sensors: 👉 https://lnkd.in/ddvr4SkR #nanotechnology #CNTs #optoelectronics #sensors

I'm thrilled to announce the publication of my latest paper titled "Winding Selection for Wound-Rotor Synchro" in IEEE Sensors Journal! 💡 The present study examines how the accuracy of Wound-Rotor (WR) synchro used in industrial applications is affected by different winding arrangements. SYNCHRO, a type of position sensors, is known for its ruggedness and robustness to vibration, and resistance to temperature variations, making it reliable for various industrial applications such as #EVs. In this paper, the WR-synchro with ontooth winding is introduced. The study also evaluated the impact of the damper winding. A special thanks to Prof. Zahra Nasiri-Gheidari, for their invaluable guidance throughout this work. For a comprehensive understanding of our research, the full text is accessible here: ✅ https://lnkd.in/ecqyhJ6d #Sensors #Synchro #IEEExplore #Innovation