Electrical and Information Technology

Faculty of Engineering LTH | Lund University

News archive, 2020

ELLIIT Nyhetsblad 19 - December 2020

Published: 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
Hela nyhetsbrevet som PDF

Link to the article ELLIIT Nyhetsblad 19 - December 2020



 

Anders J Johansson - Big Science Sweden Influencer

Published: 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...

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 Johansson plays a key role in developing Big Science in Sweden. He and his team have contributed important parts of the accelerator control system for ESS, and he has shown great flexibility and readiness to help solve the problems of others ? which is really needed when building complex facilities. With pedagogical skill and patience, Anders J Johansson shares his expertise, and has become a champion for EPICS and MicroTCA in Sweden, enabling others in both academia and industry to contribute. Read more at Big Science Sweden.

Link to the article Anders J Johansson - Big Science Sweden Influencer



 

Designing AD-converter circuits in CMOS for base stations

Published: 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.

Link to the article Designing AD-converter circuits in CMOS for base stations



 

Harsh Tataria tilldelas 2020 års Göran Linds pris i tillämpad elektronik

Published: 2020-12-07

Harsh Tataria, biträdande universitetslektor i kommunikationsteknologi, Lunds universitet, tilldelas 2020 års Göran Linds pris i tillämpad elektronik.

Harsh Tataria disputerade 2017, Victoria University, Wellington, Nya Zeeland. Rekryterades till Lund där han arbetat med karakterisering av dynamiska utbredningskanaler kring 28 GHz för massiva MIMO-system ? ett område där Lunds universitet ligger i den absoluta forskningsfronten. Det mätsystem som han utvecklat för ändamålet är unikt då det för bättrar såväl tids- som riktnings-upplösningar i mätningarna med en tio-potens jämfört med existerande system, vilket är en storslagen bedrift.
Priset är på 40 000 kr. Fysiografiska sällskapets priser och medlajer år 2020 på fysiografen.se.

Link to the article Harsh Tataria tilldelas 2020 års Göran Linds pris i tillämpad elektronik



 

ELLIIT Nyhetsblad 20 - September 2021

Published: 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
Hela nyhetsbrevet som PDF

Link to the article ELLIIT Nyhetsblad 20 - September 2021



 

How to use machine learning to decide where to do what in the edge networks

Published: 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.? 

Graph over an edge network

 Both enterprises (e.g. media companies, NEWS agencies) and ordinary people can produce web contents. Content delivery networks (CDN) are used to distribute them to the population. Telco-CDNs, thanks to their local presence near target populations, can cache contents to enhance quality of the experience. What made you want to pursue a PhD? ?I have always enjoyed being emerged in an academic environment. Even before starting my PhD journey, I was a university lecturer for five years in my home country. PhD research is very exciting as you get to work on a project of your own and experience the feeling of delivering something at a world-class level. For example, when I get promising results in my research, I envision how my findings can be published beside the findings of best authors and researchers from around the world?, Hassan says. What is the most fascinating or interesting with your thesis subject? ?The large part of my research focuses on handling user generated data and IoT data. I believe one day these data will be kind of asset being the main part of every individual, enterprise or even society capital. Therefore, extracting information and managing these data and making critical decisions from them are the most fascinating tasks in my opinion.? How will your research com to use? ?I believe my results or similar findings from other researchers will be used in practice. These days all enterprises are constantly looking for ways to minimise their cost and shift towards making their solutions more optimum. In one part of my work, I concluded a strategic case that can be useful in decision making for video-based product lines. In another part of my work, I proposed machine learning-based analytic systems that motivate enterprises not to use dedicated personnel for analytics and parameter tuning. Moreover, in my content delivery research, I proposed how Internet operators can have shares in revenue chain of user-generated video delivery systems. In my opinion, PhD students should think of ways to transform commercializing their ideas and I believe I am potentially among those.? What are your plans? ?I am currently looking for opportunities both in academia and industry. My dream job will be having an academic position as well as running my own company to patent my ideas. As of now, I am offered a post-doctoral position and I am considering accepting, as it is a way for me to further contribute to the scientific society and promote my research, Hassan Safavi concludes.? Hassan Safavi?s thesis will available for download. The thesis will be defended Online and in the E-bulding at LTH in Lund 16 October at 9.15.

Link to the article How to use machine learning to decide where to do what in the edge networks



 

lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik

Published: 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...

Link to the article lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik



 

Ny Teknik: Så ska Lund bana väg för snabbare kvantdatorer

Published: 2020-08-04

Kyld elektronik framtagen vid Lunds universitet kan spela en nyckelroll i utvecklingen av framtidens kvantdatorer

Link to the article Ny Teknik: Så ska Lund bana väg för snabbare kvantdatorer



 

lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik

Published: 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...

Link to the article lu.se: Röntgen vid MAX IV undersöker framtida nanoelektronik



 

lu.se: Kyld elektronik skapar bättre kvantdatorer

Published: 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...

Link to the article lu.se: Kyld elektronik skapar bättre kvantdatorer



 

lu.se: Next generation 5G being developed at Lund University

Published: 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...

Link to the article lu.se: Next generation 5G being developed at Lund University



 

IT-pedagogen: Här utvecklas nästa generations 5G-nät

Published: 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.

Link to the article IT-pedagogen: Här utvecklas nästa generations 5G-nät



 

IDG.se: Svenska Debricked skannar den öppna källkoden på jakt efter risker

Published: 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.

Link to the article IDG.se: Svenska Debricked skannar den öppna källkoden på jakt efter risker



 

SR P4: Nu kommer flera 5G-nät till Malmö

Published: 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/

Link to the article SR P4: Nu kommer flera 5G-nät till Malmö



 

In support of current control by quantum-mechanical tunnelling

Published: 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 Wisbrant

Link to the article In support of current control by quantum-mechanical tunnelling



 

EU:s vädjan till videojättar avslöjar okunskap om internet

Published: 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...

Link to the article EU:s vädjan till videojättar avslöjar okunskap om internet



 

HD: Här är klottrarens osynliga fiende ? ny teknik larmar i gångtunneln

Published: 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.

Link to the article HD: Här är klottrarens osynliga fiende ? ny teknik larmar i gångtunneln



 

Elektroniktidningen: Lunds energisnåla minne prisat

Published: 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.

Link to the article Elektroniktidningen: Lunds energisnåla minne prisat



 

Elektroniktidningen: Antennsystem stora som husfasader

Published: 2020-01-31

Om antennsystemen är stora som hela husfasader gör det att skapa extremt smala lober vilket öppnar för helt nya tillämpningar.

Link to the article Elektroniktidningen: Antennsystem stora som husfasader



 

Elektroniktidningen: Nanotrådar gör Lunds transistorer snabba

Published: 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...

Link to the article Elektroniktidningen: Nanotrådar gör Lunds transistorer snabba



 

Tillför en halv miljard per år till informations- och kommunikationsteknik

Published: 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...

Link to the article Tillför en halv miljard per år till informations- och kommunikationsteknik



 

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