TY - JOUR AB - In this article mixed analog/digital signal processing techniques based on parallel spread-spectrum sequencing (PSSS) and radio frequency (RF) carrier synchronization for ultra-broadband wireless communication are investigated on system and circuit level. AU - Scheytt, Christoph AU - Javed, Abdul Rehman AU - Bammidi, Eswara Rao AU - KrishneGowda, Karthik AU - Kallfass, Ingmar AU - Kraemer, Rolf ID - 24216 IS - 9-10 JF - Frequenz* Journal of RF-Engineering and Telecommunications TI - 100 Gbps Wireless System and Circuit Design Using Parallel Spread-Spectrum Sequencing VL - 71 ER - TY - CONF AB - Parallel Sequence Spread Spectrum (PSSS) is a physical layer (PHY) baseband technology that is well suited for mixed-signal transceiver implementation for high data rate wireless communication systems. Mixed signal baseband realization allows for easier implementation of the channel equalization function and eliminates the need for high speed data converters. System design and architecture of a mixed signal baseband processor for 100 Gbps wireless communication is described that reduces the implementation complexity and results in a consequent reduction in power dissipation and chip area. An ultra-broadband analog correlator consisting of a four-quadrant multiplier and a fast resettable integrator using only NPN transistors was designed, fabricated, and measured. The correlator circuit is the core component of the receiver baseband. To the best knowledge of the authors, it is the fastest correlator circuit published so far. AU - Javed, Abdul Rehman AU - Scheytt, Christoph AU - Karthik, KrishneGowda AU - Kramer, Roland ID - 24217 SN - 978-1-5090-3844-2 T2 - IEEE EUROCON 2017-17th International Conference on Smart Technologies TI - System design of a mixed signal PSSS transdeiver using a linear ultra-broadband analog correlator for the receiver baseband designed in 130nm SiGe BiCMOS technology ER - TY - GEN AB - Die Erfindung betrifft eine Folge-Halte-Schaltung zum Konvertieren eines analogen Eingangssignals in ein digitales Ausgangssignal mit einer Haltekapazitätseinheit, mit einer Spannungsverstärkereinheit enthaltend einen Eingang, an dem ein analoges Eingangsspannungssignal anlegbar ist, und enthaltend einen Ausgang, der mit der Haltekapazitätseinheit verbunden ist, mit einer Arbeitspunkteinstelleinheit zur Steuerung der Spannungsverstärkereinheit, wobei an einem Eingang der Arbeitspunkteinstelleinheit ein Steuersignal anliegt, so dass in einem Folgebetrieb der Folge-Halte-Schaltung eine an dem Ausgang der Spannungsverstärkereinheit anliegendes Ausgangssignal einen an den Eingang der Spannungsverstärkereinheit anliegendes Eingangssignal folgt, und in einem Haltebetrieb der Folge-Halte-Schaltung das Ausgangssignal der Spannungsverstärkereinheit konstant ist, mit einer Taktsignalquelle zur Erzeugung einer Folge von einem Eingang der Arbeitspunkteinstelleinheit anliegenden Taktsignalen, wobei die Arbeitspunkteinstelleinheit elektrooptische Mittel zur Erzeugung des Steuersignals aufweist, dass die Taktsignalquelle als eine optische Taktsignalquelle ausgebildet ist, so dass als Taktsignal eine optische Impulsfolge mit hohen und tiefen Taktsignalen an den Eingang der Arbeitspunkteinstelleinheit anliegt. AU - Scheytt, Christoph ID - 24218 TI - Folge-Halte-Schaltung ER - TY - CONF AB - In this paper we present theoretical, simulated and measured data for a reader to tag communication RFID system at 5.8 GHz. First a theoretical link budget analysis for a reader to tag architecture is shown for a wireless industrial application at 1m distance. This includes a power budget of the passively powered transponder. The received power level of the backscattered data for the theoretical link budget is -52:5 dBm. For the first setup slot antennas are developed and measured in the anechoic chamber. The measured gain is 4.0 dB. The power of the backscatter data in setup 1 is -74:8 dBm. This corresponds to the theoretical link budget since, all losses such as cable or lower antenna gain are taken into account. Setup 2 is upgraded on the reader side with horn antennas. At 5.8 GHz, the gain reaches the value of 10.8 dB. The second setup shows improvement in the receiving backscattered power to a value of -62:4 dBm. Furthermore, as a solution to detect those transponders not presented in the main slope of the antenna, a steerable beam is introduced by means of a Rotman lens. On the topic of the passive transponder, different harvesting topologies at 5.8 GHz are investigated, and the efficiency simulation of the harvesting circuitry has been performed. The simulated efficiency of the implemented technique is 68 %. AU - Kuhn, Peter AU - Haddadian, Sanaz AU - Meyer, Frederic AU - Hoffmann, Marc AU - Grabmaier, Anton AU - Scheytt, Christoph AU - Kaiser, Thomas ID - 24219 SN - 978-3-8007-4428-2 T2 - Smart SysTech 2017; European Conference on Smart Objects, Systems and Technologies TI - SHF RFID System for Automatic Process Optimization with Intelligent Tools ER - TY - CONF AU - Adelt, Peer AU - Koppelmann, Bastian AU - Müller, Wolfgang AU - Mueller-Gritschneder, Daniel AU - Kleinjohann, Bernd AU - Scheytt, Christoph ID - 24220 SN - 978-3-942647-88-5 T2 - Tagungsband des Wissenschaftsforums Intelligente Technische Systeme TI - Automatisierte Fehlerinjektion zur Entwicklung sicherer Mikrocontrolleranwendungen auf der Basis virtueller Plattformen ER - TY - BOOK AB - Das Wissenschaftsforum Intelligente Technische Systeme (WInTeSys) legt am 11. und 12. Mai 2017 in Paderborn den Schwerpunkt auf die Grundlagen und die Entwicklung intelligenter technischer Systeme im Kontext Industrie 4.0. Etwa 40 begutachtete hochkarätige Beiträge geben einen Überblick über Forschungsfelder, Technologien und Anwendungen. Die Veranstaltung bietet den Teilnehmerinnen und Teilnehmern eine ausgezeichnete Bühne für den Erfahrungsaustausch auf dem Weg in die Digitalisierung von Produkten und Produktionssystemen. »Das Besondere ist der Dialog von Hochschulforschung und industrieller Entwicklung, also das Aufeinandertreffen von »Science-Push« und »Application-Pull«. Die Beiträge spiegeln die hervorragende Vernetzung in der Region OWL und darüber hinaus wider«, sagt Veranstalter Prof. Jürgen Gausemeier (Heinz Nixdorf Institut, Universität Paderborn). AU - Gausemeier, Jürgen AU - Bodden, Eric AU - Dressler, Falko AU - Dumitrescu, Roman AU - Meyer auf der Heide, Friedhelm AU - Scheytt, Christoph AU - Trächtler, Ansgar ID - 24221 SN - 978-3-942647-88-5 TI - Wissenschaftsforum Intelligente Technische Systeme (WInTeSys) VL - 369 ER - TY - CONF AB - This paper focuses on the design of a high efficiency cross-connected differential drive rectifier for next-generation passive RFID tags. To provide a realistic estimation of the transponders’power and efficiency requirements at 5.8 GHz, detailed link/power-budget analysis for various blocks of the tag chip is carried out. From link budget analysis realistic RF power levels are obtained and a rectifier with high conversion efficiency at low power levels is designed. Simulations based on a commercial 65nm CMOS technology investigate the suitability of the harvesting circuit for 5.8 GHz RFID tags. AU - Haddadian, Sanaz AU - Scheytt, Christoph AU - Kramer, Roland ID - 24222 T2 - ANALOG 2017; 16th ITG/GMM-Symposium TI - Energy Harvesting Analysis for Next Generation Passive RFID Tags ER - TY - CONF AB - This paper presents the design flow of using sampling technique for fault injection on sche- matic level. The parameters used in the docu- ment to calculate the likelihood could be modi- fied by using more realistic data from the fab. With the help of the fault simulator, the whole design flow of the fault effect simulation can be realized automatically. AU - Wu, Liang AU - Abughannam, Saed AU - Müller, Wolfgang AU - Scheytt, Christoph AU - Ecker, Wolfgang ID - 24223 T2 - 2nd Workshop on Resiliency in Embedded Electronic Systems (REES) TI - SPICE-Level Fault Injection with Likelihood Weighted Random Sampling - A Case Study ER - TY - CONF AU - Adelt, Peer AU - Koppelmann, Bastian AU - Müller, Wolfgang AU - Kleinjohann, Bernd AU - Scheytt, Christoph ID - 24224 T2 - Design Automation and Testing in Europe (DATE), University Booth Interactive Presentation TI - ANALISA - A Tool for Static Instruction Set Analysis ER - TY - CONF AU - Adelt, Peer AU - Koppelmann, Bastian AU - Müller, Wolfgang AU - Kleinjohann, Bernd AU - Scheytt, Christoph ID - 24225 T2 - 2nd Workshop on Resiliency in Embedded Electronic Systems (REES) TI - An Automatic Injection Framework for Safety Assessements of Embedded Software Binaries ER - TY - JOUR AB - This work describes an electrical interferometer for contactless permittivity measurements working at 120 GHz. It was fabricated in a 130 nm SiGe process featuring an ft and fmax of 240 and 330 GHz. The on-chip system contains a 120 GHz VCO with a tuning range of 7 GHz featuring a divide-by-64 circuit to enable external PLL operation. The subsequent buffer provides 7 dBm of output power at 120 GHz. Additionally, the IC contains high-precision and high-resolution phase shifters based on a slow-wave transmission line approach with digital control for direct readout ability. A 120 GHz LNA with 17 dB gain and a power detector to provide DC output signals were realized on chip. It enables sample emulation capability by phase shift inducement in the measurement as well as a reference transmission line. In terms of phase detection, the system shows a sensitivity of 907.36 MHz/°. AU - Wessel, Jan AU - Schmalz, Klaus AU - Scheytt, Christoph AU - Kissinger, Dietmar ID - 24227 IS - 2 JF - IEEE Microwave and Wireless Components Letters TI - A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out VL - 27 ER - TY - JOUR AU - Krebs, Benjamin AU - Wehner, Marius AU - Kabst, Rüdiger ID - 24378 JF - Personalmagazin TI - Wer hat hier das Sagen? VL - 2 ER - TY - JOUR AU - Krebs, Benjamin AU - Wehner, Marius AU - Kabst, Rüdiger ID - 24379 JF - Personalmagazin TI - Nordeuropa hat´s nicht nötig VL - 2 ER - TY - JOUR AU - Rauterberg, Hannah AU - Krebs, Benjamin ID - 24380 JF - Personalführung TI - Cranet Survey 2015/2016 - Stand der HR-Digitalisierung. VL - 5 ER - TY - CONF AB - Through this study, we introduce the idea of applying scheduling techniques to allocate spatial resources that are shared among multiple robots moving in a static environment and having temporal constraints on the arrival time to destinations. To illustrate this idea, we present an exemplified algorithm that plans and assigns a motion path to each robot. The considered problem is particularly challenging because: (i) the robots share the same environment and thus the planner must take into account overlapping paths which cannot happen at the same time; (ii) there are time deadlines thus the planner must deal with temporal constraints; (iii) new requests arrive without a priori knowledge thus the planner must be able to add new paths online and adjust old plans; (iv) the robot motion is subject to noise thus the planner must be reactive to adapt to online changes. We showcase the functioning of the proposed algorithm through a set of agent-based simulations. AU - Khaluf, Yara AU - Markarian, Christine AU - Simoens, Pieter AU - Reina, Andreagiovanni ID - 24398 SN - 0302-9743 T2 - International Conference on Practical Applications of Agents and Multi-Agent Systems (PAAMS 2017) TI - Scheduling Access to Shared Space in Multi-robot Systems ER - TY - JOUR AU - Moritzer, Elmar AU - Hopp, Matthias ID - 24523 JF - Welding in the World SN - 0043-2288 TI - Bonding of wood-plastic composites (WPC)—material and surface modification for special applications ER - TY - CONF AU - Moritzer, Elmar AU - Hopp, Matthias ID - 24529 T2 - 75th Annual Technical Conference of the Society of Plastics Engineers (ANTEC) TI - Bonding of Plastic Parts with Dispersion Adhesives – Film Formation via Diffusion Processes ER - TY - JOUR AU - Zimmermann, Steffen AU - Herrmann, Philipp AU - Kundisch, Dennis AU - Nault, Barrie ID - 2463 JF - Information Systems Research TI - Decomposing the Variance of Consumer Ratings and the Impact on Price and Demand ER - TY - JOUR AU - Philipp, Matthias AU - Schumm, Gregor AU - Peesel, Ron-Hendrik AU - Walmsley, Timothy G. AU - Atkins, Martin J. AU - Schlosser, Florian AU - Hesselbach, Jens ID - 24636 JF - Energy SN - 0360-5442 TI - Optimal energy supply structures for industrial food processing sites in different countries considering energy transitions ER - TY - JOUR AU - Schumm, G. AU - Philipp, M. AU - Schlosser, Florian AU - Hesselbach, J. AU - Walmsley, T. G. AU - Atkins, M. J. ID - 24637 JF - Energy Efficiency SN - 1570-646X TI - Hybrid heating system for increased energy efficiency and flexible control of low temperature heat ER - TY - JOUR AU - Kundisch, Dennis AU - von Rechenberg, Tobias ID - 2464 IS - 4 JF - Business & Information Systems Engineering TI - Does the Framing of Progress Towards Virtual Rewards Matter? Empirical Evidence from an Online Community VL - 59 ER - TY - JOUR AU - Meier, Christian AU - Kundisch, Dennis AU - Willeke, Jochen ID - 2465 IS - 2 JF - Business & Information Systems Engineering TI - Is it Worth the Effort? - A Decision Model to Evaluate Resource Interactions in IS Project Portfolios VL - 59 ER - TY - JOUR AU - Matthias, Philipp AU - Schlosser, Florian AU - Hechelmann, Ron-Hendrik AU - Schumm, Gregor AU - Holzhammer, Uwe ID - 24675 JF - BWK Energie-Fachmagazin TI - Sektorkopplung Prozesswärme / Strom in der deutschen Industrie. Integration der erneuerbaren Energien in den Wärmesektor. VL - 70 ER - TY - GEN ED - Moritzer, Elmar ED - Budde, Christopher ED - Hüttner, Matthias ED - Krassmann, Dimitri ID - 25739 TI - Entwicklung einer neuartigen Fügetechnik für Organoblech-Hybridverbindungen ER - TY - GEN AU - Dolzhenko, Irina AU - Rumlich, Dominik ID - 25846 TI - Понять, как они тикают [Verstehen, wie sie ticken]. Interview on CLIL conducted by Ирина Долженко [Irina Dolzhenko] on behalf of sib.fm ER - TY - JOUR AU - Stefszky, Michael AU - Ricken, R. AU - Eigner, Christof AU - Quiring, V. AU - Herrmann, Harald AU - Silberhorn, Christine ID - 26040 JF - Physical Review Applied SN - 2331-7019 TI - Waveguide Cavity Resonator as a Source of Optical Squeezing ER - TY - JOUR AU - Luo, Kai Hong AU - Herrmann, Harald AU - Silberhorn, Christine ID - 26058 JF - Quantum Science and Technology SN - 2058-9565 TI - Temporal correlations of spectrally narrowband photon pair sources ER - TY - JOUR AU - Rütz, Helge AU - Luo, Kai Hong AU - Suche, Hubertus AU - Silberhorn, Christine ID - 26059 JF - Physical Review Applied SN - 2331-7019 TI - Quantum Frequency Conversion between Infrared and Ultraviolet ER - TY - CHAP AB - Selective Laser Sintering (SLS) is an Additive Manufacturing technology, which allows the production of functional polymer parts. Conventionally mainly Nylon 12 (PA 12), Polyamide 11 (PA 11), glass- or aluminum filled materials enable rapid prototyping during the product development process. Those materials do not always meet the requirements for direct production of functional parts by laser sintering. For Direct Manufacturing of functional parts out of required materials and in high quality, the laser sintering process and the material palette needs to be further developed. During this research a laser sintering test equipment for material qualification has been built up. The forthcomings are an optimized software solution, an innovative optical system, an alternative powder coating system and an improved temperature control. The functionality of the test equipment is proved with the standard material PA2200 and two new laser-sintering-materials, Nylon 6 (PA 6) and Polyamide 613 (PA 613), are investigated. The process parameters are derived and mechanical properties are determined by tensile tests. AU - Lohn, Johannes AU - Schmid, Hans-Joachim ID - 26104 T2 - Rapid.Tech – International Trade Show & Conference for Additive Manufacturing TI - Aufbau einer Lasersinter-Versuchsanlage und Verarbeitung neuer Materialien am Beispiel von Polyamid 6 und Polyamid 613 ER - TY - JOUR AB - We study the variation of the adhesion forces between wet TiO2 nanoparticles as a function of their size and the ambient relative humidity. Combining all-atom molecular dynamics and capillary simulations we demonstrate that the linear scaling of the interparticle forces with the particle diameter, well established for microscopic and macroscopic particles, can be extended down to diameters of a few nm. At this size scale, however, the molecular nature of the water adsorbates dictates the adhesion forces both via solvation effects and influencing parameters of analytical capillary models such as the equilibrium particle–particle separation distance and the water/particle contact angle. Moreover, the water surface tension becomes considerably larger than the macroscopic bulk value due to combined effects of thin-film confinement and tight curvature, in a way that strongly depends on humidity and particle size. Taking these effects into proper account, classical capillary equations can be used to predict the interparticle forces even of the smallest particles considered here (4 nm), although the circular approximation fails to reproduce the distance at which the water meniscus breaks. Finally, the transition between the dominating effects at the nanoscopic scale and conventional capillary theory valid at microscopic size scales can be only rationalized if the presence of roughness asperities on the surface of the large particles is explicitly taken into account. AU - Laube, Jens AU - Dörmann, Michael AU - Schmid, Hans-Joachim AU - Mädler, Lutz AU - Colombi Ciacchi, Lucio ID - 26106 JF - The Journal of Physical Chemistry C SN - 1932-7447 TI - Dependencies of the Adhesion Forces between TiO2 Nanoparticles on Size and Ambient Humidity ER - TY - JOUR AB - Capillary forces are very important considering the handling of powders as they, in general, exceed other adhesion forces. These capillary forces are dependent on several different parameters. Especially the distance between the particles is an important parameter. For example, in moving bulk solids a large variety of distances between particles will occur. Therefore, the distance-dependence of capillary bridges was investigated with a numerical simulation method, assuming thermodynamic equilibrium which is attained very fast for small particles. This method uses the Kelvin equation and the Young-Laplace equation to calculate numerically the shape of the capillary bridge without any assumption regarding the shape. The force is eventually derived from the meniscus shape. The distance becomes extremely important when the capillary liquid bridge between two surfaces is only determined by capillary condensation depending on relative humidity. Only a slight increase of the distance within the fraction of a nanometer changes the behaviour of the capillary force significantly. Furthermore, the influence of the force on the separation of particles will be presented. The force decreases almost linearly with increasing distance for a wide range of distances and consequently, a contact stiffness for capillary bridges could be derived. These results may e.g. be used in DEM models. Also, the maximum separation distance of capillary bridges in thermodynamic equilibrium and the correlation with the according bridge volume was investigated. As two limiting cases for capillary bridges at varying distances one can assume either a constant curvature, i.e. infinitely fast attainment of equilibrium, or a constant volume, i.e. infinitely slow attainment of equilibrium. Therefore, a comparison of these two possibilities will be presented and discussed as well. AU - Dörmann, Michael AU - Schmid, Hans-Joachim ID - 26107 JF - Powder Technology SN - 0032-5910 TI - Distance-dependency of capillary bridges in thermodynamic equilibrium ER - TY - CHAP AU - Betz, Stefan ED - Betz, Stefan ID - 2619 T2 - Aktuelle Fragestellungen zu Produktion, Logistik und Controlling TI - Strategische Erfolgsplanung für Produktinnovationen ER - TY - CHAP AU - Betz, Stefan ED - Betz, Stefan ID - 2620 T2 - Aktuelle Fragestellungen zu Produktion, Logistik und Controlling TI - Lagerkapazitätsdimensionierung als betriebswirtschaftliches Entscheidungsproblem ER - TY - THES AU - Iwanek, Peter ID - 26246 TI - Systematik zur Steigerung der Intelligenz mechatronischer Systeme im Maschinen- und Anlagenbau VL - 366 ER - TY - THES AU - Schierbaum, Thomas ID - 26247 TI - Systematik zur Kostenbewertung im Systementwurf mechatronischer Systeme in der Technologie Molded Interconnect Devices (MID) VL - 368 ER - TY - THES AU - Westermann, Thorsten ID - 26248 TI - Systematik zur Reifegradmodell-basierten Planung von Cyber-Physical Systems des Maschinen- und Anlagenbaus VL - 375 ER - TY - JOUR AU - Sperling, Jan AU - Walmsley, I. A. ID - 26307 JF - Physical Review Letters SN - 0031-9007 TI - Separable and Inseparable Quantum Trajectories ER - TY - JOUR AU - Kröger, Johannes AU - Ahrens, Thomas AU - Sperling, Jan AU - Vogel, Werner AU - Stolz, Heinrich AU - Hage, Boris ID - 26308 JF - Journal of Physics B: Atomic, Molecular and Optical Physics SN - 0953-4075 TI - High intensity click statistics from a 10 × 10 avalanche photodiode array ER - TY - JOUR AU - Sperling, Jan AU - Perez-Leija, Armando AU - Busch, Kurt AU - Walmsley, Ian A. ID - 26309 JF - Physical Review A SN - 2469-9926 TI - Quantum coherences of indistinguishable particles ER - TY - JOUR AU - Agudelo, E. AU - Sperling, Jan AU - Costanzo, L. S. AU - Bellini, M. AU - Zavatta, A. AU - Vogel, W. ID - 26310 JF - Physical Review Letters SN - 0031-9007 TI - Conditional Hybrid Nonclassicality ER - TY - JOUR AU - Kühn, B. AU - Vogel, W. AU - Sperling, Jan ID - 26311 JF - Physical Review A SN - 2469-9926 TI - Displaced photon-number entanglement tests ER - TY - JOUR AU - Bohmann, M. AU - Sperling, Jan AU - Vogel, W. ID - 26312 JF - Physical Review A SN - 2469-9926 TI - Entanglement verification of noisy NOON states ER - TY - JOUR AU - Sperling, Jan AU - Eckstein, A. AU - Clements, W. R. AU - Moore, M. AU - Renema, J. J. AU - Kolthammer, W. S. AU - Nam, S. W. AU - Lita, A. AU - Gerrits, T. AU - Walmsley, I. A. AU - Agarwal, G. S. AU - Vogel, W. ID - 26313 JF - Physical Review A SN - 2469-9926 TI - Identification of nonclassical properties of light with multiplexing layouts ER - TY - JOUR AU - Sperling, Jan AU - Walmsley, I. A. ID - 26314 JF - Physical Review A SN - 2469-9926 TI - Entanglement in macroscopic systems ER - TY - JOUR AU - Sperling, Jan AU - Agudelo, E AU - Walmsley, I A AU - Vogel, W ID - 26315 JF - Journal of Physics B: Atomic, Molecular and Optical Physics SN - 0953-4075 TI - Quantum correlations in composite systems ER - TY - JOUR AU - Krumm, F. AU - Vogel, W. AU - Sperling, Jan ID - 26316 JF - Physical Review A SN - 2469-9926 TI - Time-dependent quantum correlations in phase space ER - TY - JOUR AU - Bohmann, M. AU - Kruse, R. AU - Sperling, Jan AU - Silberhorn, Christine AU - Vogel, W. ID - 26317 JF - Physical Review A SN - 2469-9926 TI - Probing free-space quantum channels with laboratory-based experiments ER - TY - JOUR AU - Ryl, S. AU - Sperling, Jan AU - Vogel, W. ID - 26318 JF - Physical Review A SN - 2469-9926 TI - Quantifying nonclassicality by characteristic functions ER - TY - JOUR AU - Sperling, Jan AU - Clements, W. R. AU - Eckstein, A. AU - Moore, M. AU - Renema, J. J. AU - Kolthammer, W. S. AU - Nam, S. W. AU - Lita, A. AU - Gerrits, T. AU - Vogel, W. AU - Agarwal, G. S. AU - Walmsley, I. A. ID - 26319 JF - Physical Review Letters SN - 0031-9007 TI - Detector-Independent Verification of Quantum Light ER - TY - JOUR AU - Bohmann, M. AU - Kruse, R. AU - Sperling, Jan AU - Silberhorn, Christine AU - Vogel, W. ID - 26320 JF - Physical Review A SN - 2469-9926 TI - Direct calibration of click-counting detectors ER -