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Electromagnetic vector spherical waves have been used recently to model antenna channel interaction and the available degrees of freedom in MIMO systems. However, there are no previous accounts of a method to estimate spherical wave coefficients from channel measurements. One approach, using a 3D positioner, is presented in this letter, both in theory and practice. Measurement results are present
A compact dual-element antenna suitable for ultrawideband (UWB) MIMO operation is proposed in this work. The size of the antenna is 25 mm by 40 mm and it covers the lower UWB band of 3.15-5.15 GHz. Apart from the inherent wideband isolation obtained through the different angle and polarization characteristics in the radiation patterns of the individual elements, the gap between the two antenna ele
An antenna system is disclosed that includes two or more antennas and an impedance matching network. The antennas of the antenna system are closely separated, such as by a distance of no more than a wavelength of received signals divided by two. The impedance matching network is adapted to respond to and counteract performance degradation resulting from cross coupling between the antennas. Related
Abstract in UndeterminedThe success of the Wii and of the iPhone together with the persisting problem of displaying information on the small screens of mobile devices is currently pushing the development of non-visual interaction channels such as gestures, tactile/haptic interaction and sound. This development presents both potential and risk, since new channels of interaction may result either in
In this paper, an efficient technique to enhance the isolation between two closely spaced PIFAs for MIMO mobile terminals is introduced. The proposed decoupling method is based on a T-shape slot impedance transformer and it enables an inter-PIFA spacing of 1 mm to be achieved. The 10 dB impedance bandwidth and 20 dB isolation bandwidth cover the 2.4 GHz WLAN band (2.4-2.48 GHz), with a maximum iso
Popular Abstract in Swedish Prosodi och intonation är viktiga delar i det mänskliga talet. I system för text-till-talomvandling och automatisk taligenkänning måste prosodiska modeller inkluderas för att uppnå acceptabla resultat. Denna avhandling bidrar till modelleringen av svensk prosodi ur lexikalt och akustiskt perspektiv. Tre aspekter av lexikal modellering av prosodi studeras. Vi skisserar Prosody and intonation are very important ingredients of human speech. In speech technology, text-to-speech (TTS) and automatic speech recognition (ASR) systems must incorporate prosodic models in order to reach acceptable performances. We contribute to the modelling of Swedish prosody in a speech technology context from lexical and acoustic angles. Three aspects of lexical prosodic modelling are
In this paper, we study the performance of precoding schemes for cooperative transmission of multiple coherent base stations (BSs) that allow for overlapped clustering in a measured urban macrocellular environment at 2.66 GHz, in order to verify previous findings obtained by using simulated channel data. The evaluated precoding schemes include zero-forcing (ZF), layered virtual signal-to-interfere
ProtokollS/2019 Sa mmanträdesdatum 2019-12-L3., kl. 09: 15 - 12:IO 1 (3) LuNDS UNIVERSITET Socia lhögsko la n I nstitutio nsstyrelsen Närvarande: Ledamöter: Staffan Blomberg Kristina Göransson Torbjörn Hjort Katarina Jacobsson Tina Mattsson Marianne Larsson Lindahl Lena Tärnhäll Linnea Ringhage Kechid Suppleanter: Alexandru Panican MikaelSandgren övrisa: Marcus Knutagård Maria Bangura Arvidsson Le
https://www.soch.lu.se/internt/sites/soch.lu.se.internt/files/2021-06/Protokoll%20IS%20191211.pdf - 2026-05-24
Bästa resultat får du om du öppnar den här PDF-portföljen i Acrobat X eller Adobe Reader X eller senare. Hämta Adobe Reader nu! http://www.adobe.com/go/reader_download_se Univers i te tss tyre lsen Närvarande Ledamöter Andersson, Tommy Professor Verksamhetsföreträdare Bäcklund, Ann-Katrin Docent Verksamhetsföreträdare Christersson, Cecilia Docent Allmänföreträdare Halth, Sofia Ordförande Allmänför
https://www.lu.se/sites/www.lu.se/files/protokoll-bilagor-us150213.pdf - 2026-05-24
C:\Brenes_Diego.pdf.prn.pdf Private Sector Participation in the Water Industry - Who benefits and who loses? Diego Brenes e-mail: diego.brenes.745@student.lu.se Supervisor: Tareq Emtairah e-mail: tareq.emtairah@iiiee.lu.se Lund University International Master’s Programme in Environmental Science Graduation Thesis 19 November 2002 1 Abstract Water provision is one of the critical problems for human
https://www.lumes.lu.se/sites/lumes.lu.se/files/brenes_diego.pdf - 2026-05-24
Microsoft Word - Afrint II Meso 071012 FINAL.doc 1 AFRINT II Final Meso-Level ’Village Diagnostics’ Survey Instrument 2 CONTENTS SECTION I .............................................................................................................................................................................................................................................................. 4 FOR
https://www.keg.lu.se/en/sites/keg.lu.se.en/files/a33.pdf - 2026-05-24
Microsoft Word - ISP-användarhandledning doktorand-handledare_20201124_eng.docx 2020 ISP system user manual Individual study plans for doctoral students at the Faculty of Medicine Updated 7 September 2020 ISP system manual 1 ISP system manual Updated 7 S e p t e m b e r 2020 1 Introduction ............................................................................................................
A closely-packed ultrawideband (UWB) multiple- input multiple-output (MIMO)/diversity antenna (of two elements) with a size of 25 mm by 40 mm is proposed for USB dongle applications. Wideband isolation can be achieved through the different patterns and polarizations of the two antenna elements. Moreover, the slot that is formed between the monopole and the ground plane of the half slot antenna is
