Carlowitz, Christian

Dr.-Ing. Christian Carlowitz, Akad. Rat

Research Group Leader: Microwave Photonic & Quantum Systems

Department Elektrotechnik-Elektronik-Informationstechnik (EEI)
Lehrstuhl für Hochfrequenztechnik

Raum: Raum 05.235
Cauerstr. 9
91058 Erlangen

Forschungsschwerpunkte

  • Microwave photonic systems
  • Electro-optical interfaces
  • Opto-electronic signal generation
  • Cryogenic microwave components and systems for quantum technologies
  • Microwave qubit control for quantum computing

Positionen und Funktionen

Vita

Christian Carlowitz wurde 1985 in Wolfenbüttel geboren. Nach dem Abitur studierte er Informationstechnik an der Technischen Universität Clausthal und schloss das Studium 2010 als Diplomingenieur ab. Anschließend wechselte er als wissenschaftlicher Mitarbeiter an die Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) und promovierte dort 2018 am Lehrstuhl für Hochfrequenztechnik mit dem Thema „Drahtlose Hochgeschwindigkeitskommunikation mit Regenerativer Abtastung“. Er leitet als akademischer Rat seit 2018 die Arbeitsgruppe „Microwave and Photonic Systems“.
Seine Forschung umfasst die Konzeption, den Entwurf sowie die Realisierung von innovativen Systemarchitekturen für Radar- und Kommunikationsfrontends im Bereich von Mikrowellen, mm-Wellen und optischen Frequenzen. Schwerpunkte seiner Arbeit stellen sowohl Verfahren zur analogen und digitalen Signalverarbeitung als auch Hardwarekonzepte für extrem breitbandige Systeme zur Hochgeschwindigkeitskommunikation, Full-Duplex Transceiver im Bereich Mobilfunkanwendungen, Massive MIMO Basisstationen und zur Ortung und Kommunikation mit mm-Wellen RFID Systemen dar.
Dr. Carlowitz ist Mitglied der IEEE Microwave Theory and Techniques Society (MTT-S) sowie Teil des IEEE MTT-S Technical Coordinating Committee Digital Signal Processing (MTT-9). Er ist regelmäßiger Reviewer für die Transactions on Microwave Theory and Techniques und mehrere internationale, von MTTS gesponsorte Konferenzen wie IMS, EuMW, ICMIM und GeMIC.

Neueste Veröffentlichungen

  • L. Hahn, T. Bader, C. Carlowitz, M. Vossiek and G. Gold, "Tight Non-Radiating Bends of 3D-Printed Dielectric Image Lines Based on Electromagnetic Bandgap Mirrors", in Proceedings of the 2024 IEEE Wireless and Microwave Technology Conference (WAMICON), Clearwater, Mai, 2024.
    DOI: 10.1109/WAMICON60123.2024.10522856
  • M. Schmidt, M. Sadeghi, F. Rahimi, B. Eskofier, A. Buglagil, B. Schmauß and C. Carlowitz, "Realtime Laser Beam Steering and Calibration Method for Coherent Biomedical Distance and Motion Sensing", in Proceedings of the CLEO: Science and Innovations, CLEO: S and I 2024 in Proceedings CLEO 2024, Part of Conference on Lasers and Electro-Optics, Charlotte, NC, USA, 2024.
  • C. Birkenhauer, G. Körner, P. Stief, G. Hamberger, M. Beer, C. Carlowitz and M. Vossiek, "Investigation of a Simple and Versatile Concept for OFDM Radar Target Simulator Enhancement", in Proceedings of the 2024 IEEE Radio and Wireless Week, RWW 2024 - 2024 IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNeT 2024, pp. 61-64, San Antonio, TX, USA, 2024.
    DOI: 10.1109/WiSNeT59910.2024.10438535
  • M. Schmidt and C. Carlowitz, "Efficient Synthesis of Broadband Linear Frequency-Modulated Quadrature Signals for Coherent Electro-Optical Sensor Systems", in Proceedings of the IEEE MTT-S International Microwave Symposium Digest, pp. 257-260, Washington, DC, 2024.
    DOI: 10.1109/IMS40175.2024.10600286
  • L. Hahn, T. Pfahler, T. Bader, G. Gold, M. Vossiek and C. Carlowitz, "3D-Printed Dielectric Image Lines Towards Chip-to-Chip Interconnects for subTHz-Applications", in Proceedings of the 2024 IEEE International Conference on Microwaves, Communications, Antennas, Biomedical Engineering and Electronic Systems, COMCAS 2024, Tel Aviv, ISR, 2024.
    DOI: 10.1109/COMCAS58210.2024.10666228
  • L. Hahn, M. Vossiek and C. Carlowitz, "A Subharmonic Super-Regenerative FMCW Radar With Improved Intermodulation Efficiency for Applications Beyond Cut-Off Frequency", IEEE Transactions on Microwave Theory and Techniques, pp. 1-15, Oktober, 2023.
    DOI: 10.1109/TMTT.2023.3316305
  • C. Birkenhauer, G. Körner, P. Stief, G. Hamberger, M. Beer, C. Carlowitz and M. Vossiek, "A Simple and Versatile Concept to Improve Dynamic Range and Enable Target Angle Adaptability in Radar Target Simulators", IEEE Journal of Microwaves, pp. 1-11, August, 2023.
    DOI: 10.1109/JMW.2023.3296594
  • P. Fenske, T. Kögel, A. Scheder, K. Root, C. Carlowitz and M. Vossiek, "An Active Self-Interference Cancellation Coupler with 60 dB Isolation Applied in a 24 GHz SFCW Radar", in Proceedings of the 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023, pp. 517 - 520, San Diego, CA, USA, Juli, 2023.
    DOI: 10.1109/IMS37964.2023.10187937
  • C. Carlowitz and M. Dietz, "Integrated Front-End Approaches for Wireless 100 Gb/s and Beyond: Enabling Efficient Ultra-High Speed Wireless Communication Systems", IEEE Microwave Magazine, vol. 24, pp. 16-34, Juli, 2023.
    DOI: 10.1109/MMM.2023.3277360
  • P. Fenske, A. Scheder, T. Kögel, K. Root, M. Vossiek and C. Carlowitz, "Self-Interference Leakage Estimation 'N' Cancellation Element: Design of an Active Self-Interference Cancellation Coupler", IEEE Microwave Magazine, vol. 24, no. 6, pp. 68-75, Juni, 2023.
    DOI: 10.1109/MMM.2023.3256380
  • M. Vossiek, N. Haberberger, L. Krabbe, M. Hehn, C. Carlowitz and M. Stelzig, "A Tutorial on the Sequential Sampling Impulse Radar Concept and Selected Applications", IEEE Journal of Microwaves, vol. 3, pp. 523-539, Januar, 2023.
    DOI: 10.1109/JMW.2022.3228724
  • C. Birkenhauer, G. Körner, P. Stief, M. Gareis, C. Carlowitz, M. Vossiek, C. Birkenhauer, M. Kuhnlein, G. Korner, P. Stief, M. Gareis, C. Carlowitz and M. Vossiek, "Radar Target Simulator Based on Instantaneous Intra-Chirp FMCW Parameter Estimation", in Proceedings of the 20th European Radar Conference, EuRAD 2023, pp. 156-159, 2023.
    DOI: 10.23919/EuRAD58043.2023.10289216
  • L. Hahn, M. Vossiek and C. Carlowitz, "A Low-Power, Subharmonic Super-Regenerative Receiver toward a Massive Multichannel FMCW Radar Close to Cut-Off Frequency", in Proceedings of the IEEE MTT-S International Microwave Symposium Digest, pp. 513-516, San Diego, CA, 2023.
    DOI: 10.1109/IMS37964.2023.10188187
  • C. Birkenhauer, G. Körner, P. Stief, A. Hofmann, M. Alami El Dine, C. Carlowitz and M. Vossiek, "A Compact 77 GHz IQ-Modulated Transponder for High Gain and High Dynamic Range Radar Target Simulation", in Proceedings of the IEEE MTT-S International Microwave Symposium Digest, pp. 386-389, San Diego, CA, USA, 2023.
    DOI: 10.1109/IMS37964.2023.10188151
  • P. Tschapek, G. Körner, C. Carlowitz and M. Vossiek, "Detailed Analysis and Modeling of Phase Noise and Systematic Phase Distortions in FMCW Radar Systems", IEEE Journal of Microwaves, vol. 2, no. 4, pp. 648-659, Oktober, 2022.
    DOI: 10.1109/JMW.2022.3195574
  • P. Tschapek, G. Körner, P. Fenske, C. Carlowitz and M. Vossiek, "A Novel Approach for Modeling and Digital Generation of RF Signals Distorted by Bandlimited Phase Noise", IEEE Journal of Microwaves, vol. 2, no. 4, pp. 699-710, Oktober, 2022.
    DOI: 10.1109/JMW.2022.3188166
  • G. Körner, C. Birkenhauer, P. Stief, C. Carlowitz and M. Vossiek, "Frequency Extension Method for Multirate Radar Target Simulation Systems", in Proceedings of the 14, pp. 116 - 119, Ulm, Mai, 2022.
  • P. Tschapek, G. Körner, A. Hofmann, C. Carlowitz and M. Vossiek, "Phase Noise Spectral Density Measurement of Broadband Frequency-Modulated Radar Signals", IEEE Transactions on Microwave Theory and Techniques, vol. 70, no. 4, pp. 2370-2379, Februar, 2022.
    DOI: 10.1109/TMTT.2022.3148311
  • G. Körner, C. Birkenhauer, P. Stief, C. Carlowitz and M. Vossiek, "Efficient Bandwidth Enhanced Multirate Radar Target Simulation", in Proceedings of the IEEE MTT-S International Microwave Symposium Digest, pp. 534-537, Denver, CO, 2022.
    DOI: 10.1109/IMS37962.2022.9865650
  • G. Körner, M. Hoffmann, S. Neidhardt, M. Beer, C. Carlowitz and M. Vossiek, "Multirate Universal Radar Target Simulator for an Accurate Moving Target Simulation", IEEE Transactions on Microwave Theory and Techniques, vol. 5, no. 69, pp. 2730 - 2740, März, 2021.
    DOI: 10.1109/TMTT.2021.3060817
  • T. Ussmueller and C. Carlowitz, "Advancing Ultrahigh-Frequency RFID through Digital Signal Processing [From the Guest Editors' Desk]", IEEE Microwave Magazine, vol. 22, no. 3, pp. 16-17, März, 2021.
    DOI: 10.1109/MMM.2020.3042033
  • M. Gareis, A. Parr, J. Trabert, T. Mehner, M. Vossiek and C. Carlowitz, "Stocktaking Robots, Automatic Inventory, and 3D Product Maps: The Smart Warehouse Enabled by UHF-RFID Synthetic Aperture Localization Techniques", IEEE Microwave Magazine, vol. 22, no. 3, pp. 57 - 68, Februar, 2021.
    DOI: 10.1109/MMM.2020.3042443
  • M. Gareis, M. Hehn, P. Stief, G. Körner, C. Birkenhauer, J. Trabert, T. Mehner, M. Vossiek and C. Carlowitz, "Novel UHF-RFID Listener Hardware Architecture and System Concept for a Mobile Robot Based MIMO SAR RFID Localization", IEEE Access, no. 9, pp. 497-510, Dezember, 2020.
    DOI: 10.1109/ACCESS.2020.3047122
  • M. Gareis, C. Carlowitz and M. Vossiek, "A MIMO UHF-RFID SAR 3D Locating System for Autonomous Inventory Robots", in Proceedings of the 2020 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2020, Linz, November, 2020.
    DOI: 10.1109/ICMIM48759.2020.9298989
  • M. Gareis, P. Fenske, C. Carlowitz and M. Vossiek, "Particle Filter-Based SAR Approach and Trajectory Optimization for Real-Time 3D UHF-RFID Tag Localization", in Proceedings of the 2020 IEEE International Conference on RFID (RFID), Orlando, FL, USA,, November, 2020.
    DOI: 10.1109/RFID49298.2020.9244917
  • C. Carlowitz et al., "SPARS — Simultaneous Phase and Amplitude Regenerative Sampling", In Wireless 100 Gbps And Beyond. Architectures, Approaches and Findings of German Research Foundation (DFG) Priority Programme SPP1655, pp. 37-74, August, 2020.
  • H. Ghaleb, C. Carlowitz, D. Fritsche, P. Starke, F. Protze, C. Carta and F. Ellinger, "A 180-GHz Super-Regenerative Oscillator with up to 58 dB Gain for Efficient Phase and Amplitude Recovery", IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 6, pp. 2011-2019, Juni, 2020.
    DOI: 10.1109/TMTT.2020.2987555
  • P. Gröschel, M. Hehn, E. Sippel, R. Schober, R. Weigel, M. Vossiek and C. Carlowitz, "An Ultra-Versatile Massive MIMO Transceiver Testbed for Multi-Gb/s Communication", in Proceedings of the 2019 IEEE 2nd 5G World Forum (5GWF), Dresden, September, 2019.
    DOI: 10.1109/5GWF.2019.8911665
  • H. Ghaleb, C. Carlowitz, D. Fritsche, C. Carta and F. Ellinger, "A 180-GHz Super-Regenerative Oscillator with up to 58 dB Gain for Efficient Phase Recovery", in Proceedings of the Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium, pp. 131-134, Boston, MA, Juni, 2019.
    DOI: 10.1109/RFIC.2019.8701870
  • M. Hehn, E. Sippel, C. Carlowitz and M. Vossiek, "High-Accuracy Localization and Calibration for 5-DoF Indoor Magnetic Positioning Systems", IEEE Transactions on Instrumentation and Measurement, vol. 68, no. 10, pp. 4135 - 4145, Dezember, 2018.
    DOI: 10.1109/TIM.2018.2884040
  • M. Schütz, Y. Dobrev, C. Carlowitz and M. Vossiek, "Wireless Local Positioning with SILO-Based Backscatter Transponders for Autonomous Robot Navigation", in Proceedings of the IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM 2018), Munich, April, 2018.
    DOI: 10.1109/icmim.2018.8443524
  • C. Carlowitz, "Drahtlose Hochgeschwindigkeitskommunikation mit Regenerativer Abtastung", 2018.
  • C. Carlowitz, T. Girg, H. Ghaleb and X. Du, "Efficient Ultra-High Speed Communication with Simultaneous Phase and Amplitude Regenerative Sampling (SPARS)", Frequenz, vol. 71, no. 9-10, pp. 449, September, 2017.
    DOI: 10.1515/freq-2017-0163
  • P. Gröschel, S. Zarei, C. Carlowitz, M. Lipka, E. Sippel, A. Ali, R. Weigel, R. Schober and M. Vossiek, "A System Concept for Online Calibration of Massive MIMO Transceiver Arrays for Communication and Localization", IEEE Transactions on Microwave Theory and Techniques, März, 2017.
    DOI: 10.1109/TMTT.2017.2663404
  • C. Carlowitz, P. Gröschel, R. Schober and M. Vossiek, "Novel Radar-based Calibration Techniques for Massive MIMO Arrays", in Proceedings of the IMS 2017 Workshop on Massive MIMO and its 5G Related Applications, Honolulu, US, 2017.
  • C. Carlowitz and M. Vossiek, "Novel Localization Concepts with Advanced Low-Complexity Microwave and Millimeterwave RFIDs", in Proceedings of the IMS 2017 Workshop on Localization in Wireless Sensor Networks, Honolulu, US, 2017.
  • C. Carlowitz and M. Vossiek, "Demonstration of an Efficient High Speed Communication Link Based on Regenerative Sampling", in Proceedings of the International Microwave Symposium (IMS2017), Honolulu, US, 2017.
    DOI: 10.1109/MWSYM.2017.8058682
  • M. Pöpperl, C. Carlowitz, M. Vossiek, C. Mandel and R. Jakoby, "An Ultra-Wideband Time Domain Reflectometry Chipless RFID System with Higher Order Modulation Schemes", in Proceedings of the Proceedings of the 10th German Microwave Conference (GeMiC 2016), Bochum, März, 2016.
    DOI: 10.1109/GEMIC.2016.7461640
  • C. Carlowitz and M. Vossiek, "Concept for a Novel Low-Complexity QAM Transceiver Architecture Suitablefor Close to Transition Frequency Operation", in Proceedings of the IEEE MTT-S International Microwave Symposium, IMS 2015, Phoenix, Mai, 2015.
    DOI: 10.1109/MWSYM.2015.7166983
  • C. Carlowitz and M. Vossiek, "PSK Modulator for Regenerative Sampling Gigabit UWB Communication", in Proceedings of the 8th German Microwave Conference (GeMiC2014), Aachen, Germany, 2014.
  • W. Stein, C. Carlowitz and M. Vossiek, "Millimeter Wave Backscatter Transponders for Secondary Radar-Based Localization", in Proceedings of the IEEE Radio Wireless Week 2014, Newport Beach, CA, USA, 2014.
  • A. Strobel, M. Schulz, F. Ellinger, C. Carlowitz and M. Vossiek, "Analysis of phase sampling noise of switched injection-locked oscillators", in Proceedings of the IEEE Radio Wireless Week 2014, pp. 43-45, Newport Beach, CA, USA, 2014.
    DOI: 10.1109/WiSNet.2014.6825492
  • C. Carlowitz, A. Eßwein, R. Weigel and M. Vossiek, "Regenerative Sampling Self-Mixing Receiver: A Novel Concept for Low Complexity Phase Demodulation", in Proceedings of the IEEE International Microwave Symposium 2013, Seattle, USA, Juni, 2013.
    DOI: 10.1109/MWSYM.2013.6697569
  • A. Eßwein, R. Weigel, C. Carlowitz and M. Vossiek, "Concepts and Components for Pulsed Angle Modulated Ultra Wideband Communication and Radar Systems", In Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications, pp. 343-368, Februar, 2013.
    DOI: 10.5772/2648
  • A. Eßwein, C. Carlowitz, R. Weigel and M. Vossiek, "Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications", In Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications, pp. 343-368, 2013.
    DOI: 10.5772/55082
  • C. Carlowitz, M. Vossiek, A. Strobel and F. Ellinger, "Precise ranging and simultaneous high speed data transfer using mm-wave regenerative active backscatter tags", in Proceedings of the IEEE RFID 2013, pp. 253-260, Orlando, USA, 2013.
    DOI: 10.1109/RFID.2013.6548162
  • C. Carlowitz and M. Vossiek, "Miniaturized Regenerative Backscatter Transponder with Bidirectional Communication", in Proceedings of the 43th European Microwave Week / EuRAD, pp. 109-112, Nuremberg, Germany, 2013.
  • C. Carlowitz, A. Eßwein, R. Weigel and M. Vossiek, "Concepts for Generation of Angle Modulated mm-Wave UWB Signals for Communication and Ranging", in Proceedings of the IMS 2013 Workshop on RFICs/MMICs and Their Professional Wireless Sensing Applications, Seattle, USA, 2013.
  • A. Eßwein, C. Carlowitz, M. Vossiek, R. Weigel and T. Ußmüller, "An Improved Switched Injection-Locked Oscillator for Ranging and Communication Systems", in Proceedings of the 43rd European Microwave Conference, pp. 1563-1566, Nuremberg, 2013.
  • A. Strobel, C. Carlowitz, R. Wolf, F. Ellinger and M. Vossiek, "A Millimeter-Wave Low-Power Active Backscatter Tag for FMCW Radar Systems", IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 5, pp. 1964-1972, 2013.
    DOI: 10.1109/TMTT.2013.2252915
  • C. Carlowitz, A. Strobel, T. Schafer, F. Ellinger and M. Vossiek, "A mm-wave RFID system with locatable active backscatter tag", in Proceedings of the IEEE International Conference on Wireless Information Technology and Systems 2012, Maui, November, 2012.
    DOI: 10.1109/ICWITS.2012.6417738
  • C. Carlowitz, A. Eßwein, R. Weigel and M. Vossiek, "A low power Pulse Frequency Modulated UWB radar transmitter concept based on switched injection locked harmonic sampling", in Proceedings of the 7th German Microwave Conference (GeMiC2012), Ilmenau, März, 2012.
  • C. Carlowitz, A. Eßwein, R. Weigel and M. Vossiek, "Synthesis of Pulsed Frequency Modulated Ultra Wideband Radar Signals Based on Stepped Phase Shifting", in Proceedings of the IEEE International Conference on Ultra-Wideband, ICUWB 2012, pp. 343-346, Syracuse, USA, 2012.
    DOI: 10.1109/ICUWB.2012.6340471
  • C. Carlowitz and M. Vossiek, "Synthesis of Angle Modulated Ultra Wideband Signals Based on Regenerative Sampling", in Proceedings of the IEEE MTT-S International Microwave Symposium 2012 (IMS 2012), Montreal, Canada, 2012.
    DOI: 10.1109/MWSYM.2012.6258418
  • A. Eßwein, C. Carlowitz, G. Fischer, M. Vossiek, R. Weigel and T. Ußmüller, "An Integrated Switched Injection-Locked Oscillator for Pulsed Angle Modulated Ultra Wideband Communication and Radar Systems", in Proceedings of the IEEE International Conference on Ultra-Wideband, ICUWB 2012, pp. 270-273, Syracuse, USA, 2012.
    DOI: 10.1109/ICUWB.2012.6340458
  • A. Eßwein, G. Dehm-Andone, A. Aleksieieva, C. Carlowitz, G. Fischer, M. Vossiek, R. Weigel and T. Ussmueller, "Spannungsgesteuerter Colpitts-Oszillator mit weitem Abstimmbereich in Silizium-Germanium-Technologie und Ausgangsschalter zur Generierung gepulster frequenzmodulierter Ultrabreitband-Signale", in Proceedings of the 12. GMM/ITG-Fachtagung Analog 2011, November, 2011.