Abstract: Despite their high power efficiency, Class-D amplifiers (CDAs) suffer from greater EMI, inferior linearity, and lower DR than Class-AB amplifiers. This thesis describes the design and implementation of CDAs that aim to approach the performance of Class-AB amplifiers in terms of their application cost, dynamic range, and linearity while retaining the characteristic high power efficiency of the CDA, through the use of a multilevel output stage, feedback after the LC filter, and capacitive feedback. Measurement results from prototypes showed state-of-the-art performance.
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Huajun Zhang was born in Beijing, China. He obtained the B.E. degree in Electrical and Computer Engineering from Shanghai Jiao Tong University in 2015 and the B.S.E. and M.S. degrees in Electrical Engineering from the University of Michigan, Ann Arbor in 2015 and 2017, respectively. In the summer of 2016, he was an analog/mixed-signal design intern at Analog Devices, Inc., Wilmington, MA, USA. From May 2017 to February 2019, he was a Mixed Signal Design Engineer with Analog Devices, Inc., Norwood, MA, USA. Mr. Zhang joins the Electronic Instrumentation Laboratory at TU Delft in March 2019 where he is pursuing the Ph.D. degree in Microelectronics. His technical interests include precision analog circuits and data converters.
Mr. Zhang has published three peer-reviewed journal papers on SAR and sigma-delta converters and has one US patent pending. He has been a reviewer for IEEE Transactions on Circuits and Systems I: Regular Papers and IEEE Sensors Journal.
The GF12LP+ University Program was awarded to Chang Gao in ELCA for his research on Low-Power AI Hardware Accelerators using cutting-edge 12 nm technology to enable energy-efficient signal processing in transmitters for future wireless communication technologies. We look forward to revolutionizing signal processing in Wi-Fi and cellular wireless systems to significantly improve energy efficiency.
As TU Delft, we are faced with the task of making the campus a more socially safe place. Following the Education Inspectorate's report, we are drawing up an improvement plan to provide everyone with a socially safe working and learning environment where we treat each other with respect.
The aim of the meetings is to gather ideas and engage in dialogue on the following questions: what needs to change to create a socially safer working and learning environment, and how should we change it? What steps do we need to take to achieve this? All the plans and ideas will be taken into consideration and taken into account when the improvement plan is drawn up.
The sessions will be led by external experts from Berenschot. The programme is the same for each session. First, there will be an opening plenary session. Then your plans and ideas will be collected using Mentimeter. Next, there will be time to discuss these plans and ideas in smaller groups. Finally, the meeting will be concluded in plenary.
3. Monday 15 April 16.00-18.00 (with the Supervisory Board; doors open 15.45). The Supervisory Board will be present at this meeting. This meeting will be held in English. The plenary sessions will be translated into Dutch. The language of the breakout groups will depend on the language of the group participants.
The conference hosted 1500 attendees and included more than 1100 papers. This award adds to the many awards won by the TS group at international conferences, emphasizing the outstanding contributions of the group to the field of antennas.
She came up with a plan to name a room in her building after a female scientist for the first time. The Computer Science building (building 28), also part of the faculty of EEMCS, already had a room named after Iranian mathematician Maryam Mirzakhani.
The cleanroom infrastructure of the Delft University of Technology is a partner in NanoLabNL, which is the Dutch national facility for nanotechnology research. It offers the use of facilities and expertise to universities, research institutes, start-ups, and industry. The NanoLabNL facilities are an important link in the innovation process from basic idea to product. In this role NanoLabNL supports fundamental research, process and product development and small-scale production.
EKL is one of the biggest cleanrooms in The Netherlands with over 600 m2 of cleanroom class 100 (ISO 5) and 400 m2 of cleanroom class 10'000 (ISO 7). It is located in Building 36, EWI Faculty, and allows full fabrication and characterisation of any active or passive nanostructure starting from a silicon wafer. The laboratory offers sub-micrometer resolution lithography, thin film deposition and etching, bulk and surface micromachining, packaging, and assembly of the final device. Moreover, polymer based, biocompatible and biodegradable devices can be fully fabricated and synthesized in EKL.
EKL is collaborating with many research groups such as Bioelectronics, ECTM, EI, PME, PVMD, QuTech, Terahertz Sensing. Moreover, EKL offers foundry and joint development services, allowing the collaboration with different companies in the many disparate fields. The EKL team can assist you in design and provide fabrication and characterization of your device. In Applications, you can find some of the of the devices that have been fully fabricated in the EKL and KN facilities.
Innatera is a startup that originated in 2019 in the SPS group and has now grown to 65 employees. Recently they completed a neural network-based microcontroller, based on spiking neural networks. This enables highly power efficient processing (e.g. real-time image recognition) for Internet-of-Things applications.
The EURASIP Technical Achievement Award honors a person who, over a period of years, has made outstanding technical contributions to theory or practice in technical areas within the scope of the Society, as demonstrated by publications, patents, or recognized impact in this field.
More than 800,000 people in the Netherlands are hard of hearing. They suffer so much from hearing loss that it limits their daily lives. Prof. Dr. ir. Johan Frijns treats people with hearing loss, conducts research on hearing implants, and gladly shares his knowledge about electrical stimulation of the nervous system. "We shouldn't want to reinvent everything in every little corner. What we learn in one place, we can also use in another."
Johan Frijns is a professor of Otology and Physics of Hearing in the Department of Otorhinolaryngology at LUMC. He heads the Center for Audiology and Hearing Implants Leiden (CAHIL) and the Cochlear Implant Rehabilitation Centre Leiden (CIRCLE). He was recently appointed as a Medical Delta professor with a position at the Faculty of Electrical Engineering, Mathematics, and Computer Science at TU Delft.
In this project, Dr. Abdi collaborates with Dr. Seyedmahdi Izadkhast (EEE), Dr. İlke Ercan (EEE), and Prof. Dr. Ir. Alle-Jan van der Veen (SPS) from the Department of Microelectronics, and Dr. Serdar Asut from the Faculty of Architecture who has expertise on the subject. The departure point of the project is Integrated Project-3 in the BSc EE curriculum. The outcome of the project will inform the improvement of other integrated projects and lab courses.
Ex-ECTM Master student Thomas Michalica was awarded for Best MSc Graduate by Delft Bioengineering Institute (BEI) with a prize of 1000 EUR. Thomas' graduation project titled "Two-photon polymerization-based 3D-multi-electrode arrays for electrical monitoring of neuronal cells" was conducted under supervision of Massimo Mastrangeli (ECTM) and Angelo Accardo (3mE/PME/MNE).
Mario Coutino has won the IEEE Signal Processing Society Best PhD Dissertation Award. Mario received his PhD in Apr 2021 with a dissertation titled "Advances in graph signal processing: Graph filtering and network identification" (promotor: Geert Leus (SPS)).
Laser satellite communications is a promising technology to support worldwide access to telecommunications services. A major technological challenge is atmospheric turbulence impacting the propagation of the laser beams. Its effect can be mitigated by adaptive optics and geographic diversity. The DAILSCOM project aims to provide a map of the effective optical channel performance over Europe. This map is needed to design ground network technology and estimate communications service availability. Since our current understanding and ability to estimate the channel performance are limited, we will develop novel physics-informed machine learning algorithms to formulate the optical link performance map.
Four researchers (QuoQi Zhang, Arie van Deursen, Catholijn Jonker and Inald Lagendijk) from the Faculty of Electrical Engineering, Mathematics and Computer Science (EWI) have been named leading experts and are appointed as fellows by the Netherlands Academy of Engineering (NAE). A total of 62 fellows have been appointed, originating from the fields of technological sciences, applied research and innovation. The fellows focus on fostering an innovation climate that generates societal and economic value by providing engineering-based solutions to major societal issues while offering new business and export opportunities.
GuoQi Zhang is chair professor for the "Micro/Nanoelectronics System Integration and Reliability" at the EEMCS faculty, a member of Netherlands Academy of Engineering, and IEEE Fellow. His research interests cover multi-level heterogeneous system integration and packaging; multi-physics and multiscale modelling and optimization of micro/nanoelectronics; digital twin and designing for reliability; wide-bandgap semiconductors sensors and components; SSL technology; and their applications mainly in healthcare, energy and mobility.
This work comes from the visit of Dr Ingrid Ullmann to the MS3 group a few months ago, where an interesting collaboration has started on the topics of radar sensing for healthcare applications and indoor monitoring. Special thanks to Ingrid for representing the team at the conference and we look forward to new outcomes from this exciting collaboration.
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