@inbook{28756, author = {{Drossel, Kerstin and Eickelmann, Birgit}}, booktitle = {{Individuelle Förderung im Unterricht. Empirische Befunde und Hinweise für die Praxis}}, editor = {{Knauder, Hannelore and Reisinger, Christa-Monika}}, pages = {{143--156}}, publisher = {{Waxmann}}, title = {{{Potenziale der Tabletnutzung im Unterricht zur individuellen Förderung – Analysen und Forschungsperspektiven}}}, year = {{2019}}, } @inbook{28759, author = {{Eickelmann, Birgit}}, booktitle = {{Computational Thinking Education}}, editor = {{Kong, Siu-Cheun and Abelson, Harold}}, pages = {{53--64}}, publisher = {{Springer}}, title = {{{Measuring secondary school students’ competence in computational thinking in ICILS 2018 – challenges, concepts, and potential implications for school systems around the world}}}, year = {{2019}}, } @inproceedings{28760, author = {{Voogt, Joke and Knezek, Geral and Christensen, Rhonda and Tondeur, Jo and Ifenthaler, Dirk and Eickelmann, Birgit}}, booktitle = {{Proceedings of EdMedia + Innovate Learning 2019}}, pages = {{918--920}}, title = {{{Core Themes in the Second International Handbook of Information Technology in Primary and Secondary Education: A Bird’s Eye View}}}, year = {{2019}}, } @article{28761, author = {{Fugmann, Martin and Eickelmann, Birgit and Neubauer, Dirk}}, journal = {{b:sl. Beruf: Schulleitung. Das Fachmagazin für Schulleitungen in Deutschland}}, pages = {{39--40}}, publisher = {{Berlin: ASD Allgemeiner Schulleitungsverband}}, title = {{{'Digitalisierung meets Schule' - Welchen Stellenwert haben pädagogische Führungskräfte in Zeiten der Digitalisierung?}}}, volume = {{2}}, year = {{2019}}, } @inbook{28764, author = {{Gerick, Julia and Eickelmann, Birgit}}, booktitle = {{Grundschulpädagogik zwischen Wissenschaft und Transfer (Jahrbuch Grundschulforschung)}}, editor = {{Donie, Christian and Foerster, Frank and Obermayr, Marlene and Deckwerth, Anne and Kammermeyer, Gisela and Lenske, Gerlinde and Leuchter, Miriam and Wildemann, Anja}}, isbn = {{9783658262303}}, pages = {{200--205}}, publisher = {{VS Verlag}}, title = {{{Möglichkeiten des Transfers schulischer Innovationen im Kontext des Lernens mit digitalen Medien an Grundschulen}}}, doi = {{10.1007/978-3-658-26231-0_25}}, volume = {{23}}, year = {{2019}}, } @inproceedings{24048, abstract = {{This paper presents an area-efficient 19.25 GHz to 77 GHz frequency quadrupler for automotive radar applications. To reduce chip area, the delay lines of each doubler stage have been drastically shrunk by means of meandering, slow wave structures, and capacitive loading. Additional circuit techniques were applied to further reduce chip area. Compared to previously published Gilbert cell frequency multipliers the presented quadrupler achieves the shortest electrical length of the delay lines reported so far allowing for compact, low-cost radar transceivers. The chip was implemented in a IHP 130nm SiGe BiCMOS technology (f T /f max =240/340GHz). It dissipates 91.5mW from a 3.3V supply.}}, author = {{Kruse, Stephan}}, booktitle = {{IEEE MTT-S International Microwave and RF Conference 2019}}, publisher = {{IEEE}}, title = {{{An Area Efficient 19.25 GHz to 77 GHz Gilbert Cell Frequency Quadrupler with 55% Shrinked Delay Lines in 130nm SiGe BiCMOS }}}, doi = {{10.1109/IMaRC45935.2019.9118726}}, year = {{2019}}, } @inproceedings{24049, abstract = {{This paper presents a broadband sampler IC using a current-mode integrated-and-hold-circuit (IHC) as sampling circuit. The sampler IC exhibits 1dB large-signal bandwidth of 70 GHz and excellent signal integrity on hold-mode. With a sampling rate of 5 GS/s, it achieves effective number of bits (ENOB) of 6 bit at 9.9 GHz input frequency. The chip was fabricated in a 130 nm SiGe BiCMOS technology from IHP.}}, author = {{Wu, Liang and Weizel, Maxim and Scheytt, Christoph}}, booktitle = {{Asia-Pacific Microwave Conference (APMC)}}, location = {{Singapore }}, title = {{{70 GHz Large-signal Bandwidth Sampler Using Current-mode Integrate-and-Hold Circuit in 130 nm SiGe BiCMOS Technology}}}, doi = {{10.1109/APMC46564.2019.9038239}}, year = {{2019}}, } @inproceedings{24052, abstract = {{This paper presents a broadband track-and-hold amplifier (THA) based on switched-emitter-follower (SEF) topology. The THA exhibits a record 3dB small-signal bandwidth of 70 GHz. With the high sampling rate of 40 GS/s, it achieves an effective number of bits (ENOB) of 7.5 bit at 1 GHz input frequency and an ENOB of >5 bit up to 15 GHz input frequency. The chip was fabricated in a 130 nm SiGe BiCMOS technology from IHP (SG13G2). It draws 110 mA from a -4 V supply voltage, dissipating 440 mW.}}, author = {{Wu, Liang and Weizel, Maxim and Scheytt, Christoph}}, booktitle = {{26th IEEE International Conference on Electronics Circuits and Systems (ICECS)}}, title = {{{A 70 GHz Small-signal Bandwidth 40 GS/s Track-and-Hold Amplifier in 130 nm SiGe BiCMOS Technology}}}, doi = {{10.1109/ICECS46596.2019.8965046}}, year = {{2019}}, } @inproceedings{24053, abstract = {{We overview the 3-year Meteracom project which will provide traceability to the SI for THz communication measurement parameters. The key objectives are to develop new metrological methods to characterize the measurement systems, system components and propagation channels. The final objective is to develop metrology for functionality and signal integrity of THz communication systems; particularly device discovery and beam tracking, determination of physical layer parameters for digital transmission and real-time performance evaluation.}}, author = {{Humphreys, David and Berekovic, Mladen and Kallfass, Ingmar and Scheytt, Christoph and Kuerner, Thomas and Jukan, Admela and Schneider, Thomas and Kleine-Ostmann, Thomas and Koch, Martin and Thomae, Reiner}}, booktitle = {{Proc. 43-nd Meeting of the Wireless World Research Forum (WWRF)",}}, title = {{{An overview of the Meteracom Project}}}, year = {{2019}}, } @inproceedings{24057, abstract = {{Targeting the feasible application of microwave RFID systems with MIMO reader technology for tracking small objects in multipath fading conditions, we present a fully integrated Analog Front-End (AFE) designed and fabricated in a standard 65-nm CMOS technology for low power passive RFID tags in the 5.8 GHz ISM band. A differential drive power scavenging unit is dimensioned to provide a 1.2 V rectified voltage resulting in a 1 V regulated voltage for the AFE while supplying a 50 μW load. Transistors with standard threshold voltage (V th ) have been used for implementation. Measurements of the fabricated circuits show a maximum Power Conversion Efficiency (PCE) of 71.8% at -12.5 dBm, and an input quality factor (Q-factor) of approximately 10.}}, author = {{Haddadian, Sanaz and Scheytt, Christoph}}, booktitle = {{IEEE International Conference on RFID Technology & Application (RFID-TA) }}, title = {{{A 5.8 GHz CMOS Analog Front-End Targeting RF Energy Harvesting for Microwave RFIDs with MIMO Reader}}}, doi = {{10.1109/RFID-TA.2019.8892037}}, year = {{2019}}, }