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Elektro- och informationsteknik

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Andreia Cathelin ny hedersdoktor vid LTH

Publicerad: 2019-12-20

Andreia Cathelin Technology R&D Fellow vid företaget STMicroelectronics utnämns till hedersdoktor vid LTH.
Andreia Cathelin är Technology R&D Fellow vid företaget STMicroelectronics i Frankrike där hon arbetar med utveckling och design av kretsar för radiokommunikation och system med extremt låg energiförbrukning. Hon har vetenskaplig excellens inom ett för LTH relevant område, enligt Ove Edfors, professor i radiosystem vid institutionen för elektro- och informationsteknik. ? Andreia har under många år varit engagerad i institutionens forskning och utbildning i sin roll som styrelsemedlem i vårt Industrial Excellence Center in System Design on Silicon (SoS). Hon har också verkat som en förebild och hennes stora internationella kontaktnät har öppnat dörrar för nya forskningssamarbeten. Hon har även bidragit till unika möjligheter för forskare vid LTH att tillverka avancerade integrerade kretsar. Läs mer på lu.se



 


WASP programme grows with an additional SEK 1.3 billion

Publicerad: 2019-12-18

The Wallenberg AI, Autonomous Systems and Software Program (WASP), Sweden?s largest individual research programme, has been extended by three years and will receive a further research grant of nearly SEK 1.3 billion. The decision to extend WASP...

The Wallenberg AI, Autonomous Systems and Software Program (WASP), Sweden?s largest individual research programme, has been extended by three years and will receive a further research grant of nearly SEK 1.3 billion.
The decision to extend WASP has been recently taken by the board of the Knut and Alice Wallenberg Foundation, and means that the programme, which started in 2014, will continue until 2029 with a total budget of SEK 5.5 billion. The Knut and Alice Wallenberg Foundation (KAW) will provide SEK 4.2 billion, and the remainder will be provided, as previously, mainly from the five partner universities and industry.
Currently WASP funds 35 PhD students, 16 industrial PhD students, 7 postdocs, 1 full professor, 2 associate professors, 1 assistant professor, 7 professor equivalents for PhD supervision and research, and 1.5 professor for program management and execution at Lund University. An additional 4 PhD students are currently affiliated with WASP.
"The extension and expansion of WASP allow researchers at Lund University to apply for projects and recruitment packages from WASP for three more years up until the end of 2029.  A plan for how the expansion will be used is currently under development by the new WASP leadership consisting of Sara Mazur - chair of the WASP board from 1 January 2020 - and Anders Ynnerman - program director for WASP from 1 July 2020", says Karl-Erik Årzén, Chair of the WASP Program Management Group (PMG) that is responsible for WASP-AS - the Autonomous Systems and Software parts of WASP and also University representative for Lund University in WASP.

Read more about the extension and expansion of WASP at: https://wasp-sweden.org/



 


Unik teknologi gör gestkontroll mer exakt

Publicerad: 2019-11-13

Att kontrollera mobiltelefonen med en enkel handrörelse är den senaste tekniknyheten för mobilanvändare. Men för att ta konceptet med rörelsestyrd teknik från en rolig gimmick till verkligt användbara funktioner krävs mer exakta radarsensorer. Nu...



 


EU-samarbete sporrar till bättre forskningsresultat

Publicerad: 2019-11-07

Visst innebär det mycket arbete att koordinera ett stort EU-projekt med många partners, delrapporter och utvärderingar. Men det är värt det, tycker både Margareta Johansson och Lars Erik Wernersson som koordinerar var sitt projekt. ? Det har lyft...



 


Compensating for the users interaction with their cell phones

Publicerad: 2019-10-30

All cell phone users know that you sometimes get a better connection by turning in another direction or by keeping the phone a bit from the body. This ?shadowing? is one of the challenges that Jonas Lindstrand addressed in his PhD thesis. Another...

The title of Jonas Lindstrand?s thesis is ?Integrated Transmitters for Cellular User Equipment?Wideband CMOS Power Amplifiers and Antenna Impedance Tuners?. The main scope of the thesis project has been to reduce the power consumption of the radio electronics in cell phones in two different areas. 
?The primary target has been the energy consumption of the power amplifier in the transmitter, but we have also investigated why and how the performance of the transmission degrades due to how the user handles their cell phone?, Jonas Lindstrand says.
To reduce the performance degrading effects caused by the cell phone user, a component called an impedance tuner can be used. The impedance tuner reduces the impedance mismatch caused by the physical presence of the user. 
?This helps the electronics inside the cell phone to work as intended ? and this without any costly re-design of all the electronics, Jonas Lindstrand says.
Regarding the other objective Jonas explains that in the transmitter the power amplifier is the main power consumer and one of the hardest circuits to design, and also the most expensive component in cell phone radio. During his thesis project Jonas has designed, implemented, and verified low cost power amplifier solutions in CMOS*, with reduced cost as result. 
The need for low cost, and for wideband circuits, has increased in the last few years, mainly due to new frequency bands in what is called the Sub-6 GHz frequencies. This means that more components with higher performance is required. Consequently, the cost of the cell phone has increased and will continue to increase with the upcoming releases of the full 5G solution. 
?So by reducing the number of components in the cell phone, especially the expensive ones, this yields lower overall cost and less fabricated components, which also effects environmental impact in a positive manner?, Jonas continues.                          
What made you want to pursue a PhD?
?I have always loved science and these days it has mainly been the science of electronics. What really made me make this choice, a PhD in engineering is a way to maximize your chance, to live anywhere you desire and you also have a great potential to keep working with something you really love. As a PhD-student, I could do research that is very rare in the industry and it also helped me in my development as a person, which I think is the most important?, Jonas Lindstrand says.       
What have you found most interesting with your subject?
?The challenge, how hard it actually was to get some of the circuits to work as intended, and also the complexity of the circuits and their theory. The most interesting to me is the future. We are more or less in one of the forks in the road for wireless communication so far, and it is mainly the release of 5G and together with new higher frequency bands in the mm-wave spectrum. In academia, mm-wave circuits for consumer products have been researched for the last 15-20 years. Now finally a commercialization has started to happen.         
What results from your research do you believe will be applied in practice?
?I think that some of the measurement practices I used for impedance tuner is used today, I must add that they might have been used long before I used them, but to my knowledge, I had not seen them before we published them?, Jonas Lindstrand says.
?I also believe mostly bits and pieces will be used at first, the best chance is for the wideband matching network and only because it is relatively simple with low degradation of circuit performance and it also has low cost in terms of added components. The main power amplifier circuit might be useful in the next 5-10 years, but requires more research and more theoretical understanding. I think this circuit can be improved to further increase efficiency and also take fully integrated power amplifiers in CMOS to the next level, regarding efficiency and power consumption?, Jonas Lindstrand continues.
What are your plans?
?I will continue to work for a Lund start-up called BeammWave AB, the company mainly works with integrated mm-wave circuits for 5G consumer products, and as a matter of fact, I will dedicate all my office hours with them after the defence of this thesis?, Jonas Lindstrand says. 
The thesis for download!
* Complementary metal?oxide?semiconductor (CMOS)



 


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