Nyhetsarkiv, 2020
ELLIIT Nyhetsblad 19 - December 2020
Publicerad: 2020-12-20
Rubriker
Ny ELLIIT-organisationNya ELLIIT-projekt och rekryteringarResearch highlightsELLIIT i kampen mot coronaAvoiding collision when the road friction is unknownNew high-speed energy-efficient data convertersOpenModelica NewsMathematical...
Rubriker
- Ny ELLIIT-organisation
- Nya ELLIIT-projekt och rekryteringar
- Research highlights
- ELLIIT i kampen mot corona
- Avoiding collision when the road friction is unknown
- New high-speed energy-efficient data converters
- OpenModelica News
- Mathematical modelling to investigate drug effects
- Advances in malware analysis techniques
- Invited Talks
- Awards and Appointments
- Testing systems in the presence of adaptation
- Program chairs and Editorships
- PhD theses
- Organized conferences and workshops
- Personnel
- Research Grants
- Courses, outreach
- Komprimerad robotvecka
- Skolprogrammering med miljödata
Länk till artikeln ELLIIT Nyhetsblad 19 - December 2020
Anders J Johansson - Big Science Sweden Influencer
Publicerad: 2020-12-17
Anders J Johansson, Department of Electrical and Information Technology, LTH, Lund university has been given the Big Science Sweden Influencer Award in the university category.
Motivation: With enthusiasm and determination, Anders J...
Länk till artikeln Anders J Johansson - Big Science Sweden Influencer
Designing AD-converter circuits in CMOS for base stations
Publicerad: 2020-12-14
The emerging 5G network enables reliable connections with significantly reduced latency at an increased transmission rate. The increase in performance requires improvements in all parts of the communication chain. Siyu Tan?s PhD Thesis focuses on...
The thesis will be defended on 18 December 2020
The thesis for download [PDF, portal.research.lu.se].
The advancement of wireless communication systems requires high-performance Analog to Digital Converters (ADC), an essential component in a modern high-performance radio transceiver device. The main focus of Siyu Tan?s research is designing high-performance ADCs on integrated circuits. This research analyzes various ADC architectures and their component-level implementations in advanced CMOS technologies and aims to find optimized high-speed analog-to-digital conversion designs. This research tries to understand the benefits and limitations of specific ADC designs and evaluate the possibilities of integrating them inside the advanced base station devices in the future.
From fixing electronics to designing high-performance AD-converters
When Siyu Tan was a child, he enjoyed collecting non-functioning electronic devices from his friends and trying to fix them. He began to understand what components are used inside a radio, why they are designed like that, and what is the magic behind modulation, demodulation, etc. ?After I grew up, I feel more and more interested in electronic design. Instead of learning the existing circuits, I tried to build my own circuits based on the knowledge and experiences I acquired. Thanks to the growth of the Internet, it became easier for me to understand the challenging circuits by surfing online. It is truly an unforgettable experience,? he says. ?I completed my Master?s study at Lund University, which was a wise choice I made. I?ve learned a lot and gained a huge amount of supports from professors and my supervisors, who have been very knowledgable and patient whenever I?ve faced a challenge. I hope my research outcomes will create a small contribution to the state-of-the-art science world.?After you have measured the chip, you will know if your idea works
Siyu explains that the chip circuit design usually takes a very long time from the design phase to the actual measurement. Unlike the circuit-board level design, the internals of a chip is hard to see, and any problems inside the chip become difficult to debug. Therefore, it requires extensive knowledge of circuits and expertise in practices. ?In my opinion, the whole process from a CMOS circuit design to chip measurement is the most exciting part of this research work, which is also the main topic of my thesis. As a main designer, I am in charge of designing the circuit using computer-aided design (CAD) tools and preparing the chip measurement. I have to carefully think about what to design, why it is beneficial, and its performance compared with the current designs,? he says. ?Various of small circuit blocks are internally connected in a large circuit and system. Sometimes, a few adjustments here and there make huge differences to the results. The measurements are also challenging. Even though the designer already simulated the circuits extensively before the chip manufacturing, there could still be uncertainties in the actual chip measurements. Will the chip to be tested meet the target specifications? Is it sensitive to the fabrication process, supply voltage, and operating temperature? We will know the answers in the lab.?Industrial collaborations
?My project is highly related to the industry. I already got the chance to work in Ericsson Research in Lund, together with experienced researchers, to design ADC chips planned to be used in current 5G or even future 6G communication devices,? Siyu says. ?I learned a great amount of knowledge of the standard circuit design procedures from the industry, and I also got a chance to use a well-equipped lab to measure one of the prototype ADC chips. The experiences I acquired from the industry inspired me during my PhD studies, and also changed my way of thinking for my current and future works.? ?An improved chip I designed is based on an earlier prototype ADC chip designed by experienced researchers in Ericsson Research in Lund, which has been fabricated but not yet measured. This new ADC chip was designed based on industry guidelines, which could be a prototype to be integrated into high-performance communication devices in the future.?What are your plans?
?I plan to continue my research career at the EIT-department at Lund University. I will join a joint research work between Ericsson Research in Lund, and the university. The main goal is to improve my current ADC design further and achieve a higher performance than the current design. I will measure the earlier fabricated chip as soon as possible, then learn from the results and improve the design by adding or replacing a few crucial blocks for a satisfying result,? Siyu concludes.Länk till artikeln Designing AD-converter circuits in CMOS for base stations
Harsh Tataria tilldelas 2020 års Göran Linds pris i tillämpad elektronik
Publicerad: 2020-12-07
Harsh Tataria, biträdande universitetslektor i kommunikationsteknologi, Lunds universitet, tilldelas 2020 års Göran Linds pris i tillämpad elektronik.
Länk till artikeln Harsh Tataria tilldelas 2020 års Göran Linds pris i tillämpad elektronik
ELLIIT Nyhetsblad 20 - September 2021
Publicerad: 2020-12-04
Rubriker
New ELLIIT infrastructure initiatives ELLIIT: 10 years of successful collaborationsLaunch of ELLIIT Focus PeriodsRQ20: Lund University's Research Quality Evaluation Project 2020Research HighlightsOpenModelica 1.17.0 and 1.18.0 beta1...
Rubriker
- New ELLIIT infrastructure initiatives
- ELLIIT: 10 years of successful collaborations
- Launch of ELLIIT Focus Periods
- RQ20: Lund University's Research Quality Evaluation Project 2020
- Research Highlights
- OpenModelica 1.17.0 and 1.18.0 beta1 were released
- Radiation measurements using UAV-carried sensor
- The Roadmap to 6G Security and Privacy
- Forming a government - how long? A multiagent perspective
- Industry-academia communication in a joint software engineering research project
- Efficient Business Prototyping for Startups
Länk till artikeln ELLIIT Nyhetsblad 20 - September 2021
How to use machine learning to decide where to do what in the edge networks
Publicerad: 2020-10-06
One of the main purposes of Mohammadhassan Safavi?s Ph D thesis is to leverage machine learning algorithms to predict where users activities should be done to incur minimum cost. Cost could be energy consumption, service quality degradation, service...
A big portion of Mohammadhassan Safavi?s thesis is focusing on user generated content such as texts, photos or videos that everyone takes and shares with friends and family via Internet. And for this digital content he has developed algorithms to find out where in the network the best host server should be
?Consider yourself traveling as a tourist to a beautiful European city?, he explains. ?You take a picture of a historical building and share it on Instagram. Your friends start seeing it once you upload it; What many people may not know is the complicated algorithms that run behind the curtains from the time you share your photo until your friends view it.?
?Imagine yourself answering this question in which city the server should be?? he continues. ?In the city where the photo is taken; in the city of your residence; Or in the city where you have grown up? These are just simplified versions of real technical questions that we as researchers deal with, because it was not asked in what aspects a place is good or bad or what the consequences of a wrong decision are.?
Länk till artikeln How to use machine learning to decide where to do what in the edge networks
lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik
Publicerad: 2020-08-16
Tack vare ett nytt innovativt koncept* har MAX IV banat väg för fjärde generationens synkrotroner. I en ny forskningsartikel bevisas den revolutionerande inverkan som MAX IV:s röntgenljus kan ha för utvecklingen av nanoelektronik, både inom...
Länk till artikeln lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik
Ny Teknik: Så ska Lund bana väg för snabbare kvantdatorer
Publicerad: 2020-08-04
Kyld elektronik framtagen vid Lunds universitet kan spela en nyckelroll i utvecklingen av framtidens kvantdatorer
Länk till artikeln Ny Teknik: Så ska Lund bana väg för snabbare kvantdatorer
lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik
Publicerad: 2020-07-16
Tack vare ett nytt innovativt koncept* har MAX IV banat väg för fjärde generationens synkrotroner. I en ny forskningsartikel bevisas den revolutionerande inverkan som MAX IV:s röntgenljus kan ha för utvecklingen av nanoelektronik, både inom...
Länk till artikeln lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik
lu.se: Kyld elektronik skapar bättre kvantdatorer
Publicerad: 2020-07-10
Ett nytt EU-projekt har som mål att lösa upp en flaskhals vid utvecklingen av kvantdatorer för att därigenom bana väg för bättre kvantdatorer i framtiden. Lunds universitet är koordinator för projektet som har en sammanlagd budget på drygt 45...
Länk till artikeln lu.se: Kyld elektronik skapar bättre kvantdatorer
lu.se: Next generation 5G being developed at Lund University
Publicerad: 2020-06-24
Research for the next generation 5G network is in progress. World unique measuring equipment has been constructed at Lund University in cooperation with Ericsson and Sony. The aim is to create a mobile network that is considerably faster and more...
Länk till artikeln lu.se: Next generation 5G being developed at Lund University
IT-pedagogen: Här utvecklas nästa generations 5G-nät
Publicerad: 2020-06-24
På Institutionen för elektro- och informationsteknik på LTH har man byggt upp en världsunik mätutrustning i samarbete med både Ericsson och Sony.
Länk till artikeln IT-pedagogen: Här utvecklas nästa generations 5G-nät
IDG.se: Svenska Debricked skannar den öppna källkoden på jakt efter risker
Publicerad: 2020-06-21
Open source är numera utbrett ute på företagen ? men många väljer att bortse från de risker som finns, i form av sårbarheter, eventuella licensproblem och ekosystem som snabbt kan ändras. Svenska Debricked vill automatisera analysen.
Länk till artikeln IDG.se: Svenska Debricked skannar den öppna källkoden på jakt efter risker
SR P4: Nu kommer flera 5G-nät till Malmö
Publicerad: 2020-06-08
Flera telefonoperatörer lanserar 5G-nät i Malmö nu under juni. Det nya nätet innebär bland annat snabbare dataöverföring och att fler enheter kan vara uppkopplade samtidigt, säger Fredrik Tufvesson som är professor i radiosystem vid Lunds Tekniska...
Läs och lyssna på https://sverigesradio.se/
Länk till artikeln SR P4: Nu kommer flera 5G-nät till Malmö
In support of current control by quantum-mechanical tunnelling
Publicerad: 2020-06-02
There are still obstacles to bridge before nanoelectronics can be integrated in our everyday electronics, and thereby bring better performance and reduced energy needs. One of the challenges is about the production of the transistors, MOSFETs, that...
There are still obstacles to bridge before nanoelectronics can be integrated in our everyday electronics, and thereby bring better performance and reduced energy needs. One of the challenges is about the production of the transistors, MOSFETs, that need be of a good and consequent quality. In order to make it possible to address that problem in a systematic way Markus Hellenbrand has focused his thesis work on measuring and analysing the defects, or ?traps? in the electrically active material in the vertical MOSFET stacks. The thesis is titled ?Electrical Characterisation of III-V Nanowire MOSFETs? and will be defended 12 June at 9:15. We have spoken to the author.
Link to the dissertation event 12 June 2020 at 09.15
Download the thesis (PDF)
Markus Hellenbrand?s research has covered a range of topics around metal-oxide-semiconductor field-effect transistors. This term describes one of the most important components of all our electrical applications like computers, smartphones, servers to host information on the internet and so on.
?The common goal of all my investigations was to find out how transistors can be improved for lower power consumption and for higher operation frequencies?, Markus comments.
?In the Nanoelectronics group, where I did my research, we use so-called III-V materials to build transistors. These materials have very good current transport properties, which allow lower supply voltages than in the current industry standard silicon. Like with many things, unfortunately, it is difficult to fabricate perfect materials, so that real manufactured transistors suffer from material defects. I measured the effects of such defects on the transistor performance, for example electrical noise or drift during operation, so that we know what will have to be improved. I also measured the high frequency performance to find out what limits the operation frequency of these transistors, and I looked into so-called Tunnel Transistors, which use quantum mechanical tunnelling to control the device current?, he continues.
Left: Measurement (circles with error bars) of low-frequency noise in a III-V nanowire MOSFET with a fitted model (lines). Right: From such measurements, the number of material defects Nbt in the gate oxide can be calculated. The different lines represent different types of transistors; curved lines and straight lines in boxes represent different models.
What made you want to pursue a PhD?
?I always wanted to know more about everything and always wanted to understand how things work. According to my parents already as a small child. The idea of doing research, of finding out really new things myself, and of really immersing myself in a subject of my choice sounded just so fascinating. So I wanted to pursue PhD studies already since high school. And indeed, it has been rewarding, I am not disappointed?, Markus says.Why nanoelectronics?
?Physics is the most interesting subject for me since it is concerned with the most fundamental things in the world ? about what is keeping everything together, and about how everything works. At the same time, I want to do something that can benefit society. In nanoelectronics, my PhD subject, I believe that these two come together perfectly. Nanoelectronics combines quite fundamental physics with the aim to create devices that can improve life for everyone."Will your results come to use?
?In nanoelectronics, as in many other engineering subjects, we have to be aware that our research has to be many years ahead of industry applications. It takes a long time to come all the way from basic science to consumer applications and nowadays, most research is a ?contribution to the bigger picture? rather than the one revolutionary finding, which changes the world. So it is unlikely that my research this far will lead to specific applications on a store shelf where I can say ?Hey look, this is from my research!?. However, it is quite certain that the principles which I worked on will be applied in future transistor technologies. Some of my findings, as for instance my model for high frequency transistor operation, are certainly relevant immediately. Other results will be useful for ongoing research that will continue for several years?, Markus says.What are your plans?
?I want to stay in academia and continue to find out new things! Besides doing a PhD, it has been a dream of mine to work at the University of Cambridge in the UK and indeed, I was offered a position as a research associate there beginning in September. I will be working on more fundamental material physics again, which I am very excited about. I will have to see, how the ongoing pandemic will complicate moving to the UK, but I am hopeful that it will work out one way or the other." Jonas WisbrantLänk till artikeln In support of current control by quantum-mechanical tunnelling
EU:s vädjan till videojättar avslöjar okunskap om internet
Publicerad: 2020-03-31
EU:s uppmaning till Youtube och Netflix häromveckan att sänka videokvaliteten för att undvika ett kraschat internet i Corona-tider var ganska onödig, enligt professorn i internetsystem Maria Kihl. ?Men för de båda streamingjättarna blev den ett...
Länk till artikeln EU:s vädjan till videojättar avslöjar okunskap om internet
HD: Här är klottrarens osynliga fiende ? ny teknik larmar i gångtunneln
Publicerad: 2020-03-29
Klottrare ska inte hålla på i lugn och ro i stans gångtunnlar. Ny teknik känner av när något är på gång ? och larmar. Men tekniken behöver finslipas.
Länk till artikeln HD: Här är klottrarens osynliga fiende ? ny teknik larmar i gångtunneln
Elektroniktidningen: Lunds energisnåla minne prisat
Publicerad: 2020-03-13
en systemkrets kan cacheminnet stå för halva energiförbrukningen. Xenergics teknik kan i bästa fall sänka den med 90 procent. Företaget tilldelas nu ett stipendium från Ideon på 25 000 kronor.
Länk till artikeln Elektroniktidningen: Lunds energisnåla minne prisat
Elektroniktidningen: Antennsystem stora som husfasader
Publicerad: 2020-01-31
Om antennsystemen är stora som hela husfasader gör det att skapa extremt smala lober vilket öppnar för helt nya tillämpningar.
Länk till artikeln Elektroniktidningen: Antennsystem stora som husfasader
Elektroniktidningen: Nanotrådar gör Lunds transistorer snabba
Publicerad: 2020-01-31
Transistorer baserade på nanotrådar klarar högre frekvenser och blir energisnålare
än dagens CMOS-komponenter. Tekniken kommer från universitet i Lund och
går att integrera i kiselprocesser. Dagarna före jul tog C2Amps ? som håller på...
Länk till artikeln Elektroniktidningen: Nanotrådar gör Lunds transistorer snabba
Tillför en halv miljard per år till informations- och kommunikationsteknik
Publicerad: 2020-01-17
För att säkra svensk konkurrenskraft krävs en utökad satsning på forskning och innovation inom informations- och kommunikationsteknik, skriver rektorerna för LTH och Chalmers tillsammans med ledande företrädare för Ericsson och Stora Enso i en...
Länk till artikeln Tillför en halv miljard per år till informations- och kommunikationsteknik