Now showing items 1-10 of 10

    • 160-GHz radar proximity sensor with distributed and flexible antennas for collaborative robots 

      Wissenschaftlicher Artikel
      Geiger, Martin; Waldschmidt, Christian (Universität Ulm, 2019-01-09)
      There is a growing demand for collaborative robots in order to improve the efficiency of industrial processes and to push Industry 4.0 forward. The challenge for these robots is the compliance of the safety regulations to ...
    • 77 GHz radar-based altimeter for unmanned aerial vehicles 

      Beitrag zu einer Konferenz
      Hügler, Philipp; Geiger, Martin; Waldschmidt, Christian (Universität Ulm, 2018)
      For multi-copter unmanned aerial vehicles (UAVs) sensing of the actual altitude is an important task. Many functions providing increased flight safety and easy maneuverability rely on altitude data. Commonly used sensors ...
    • A 160-GHz radar with flexible antenna used as a sniffer probe 

      Wissenschaftlicher Artikel
      Geiger, Martin; Hitzler, Martin; Saulig, Stefan; Iberle, Johannes; Hügler, Philipp; Waldschmidt, Christian (Universität Ulm, 2017-06)
      In radar measurements the observed area is limited by the antenna beamwidth and due to the usually fixed transceiver position, only unhidden targets in a small observation area can be detected. Furthermore, bulky lens ...
    • A dielectric lens antenna fed by a flexible dielectric waveguide at 160 GHz 

      Beitrag zu einer Konferenz
      Geiger, Martin; Hitzler, Martin; Iberle, Johannes; Waldschmidt, Christian (Universität Ulm, 2017-05-18)
      Flexible antennas in radar applications enable the user to go around obstacles or detect targets at hidden places. In this paper, two elliptical lenses of different size made of high density polyethylene and stacked on ...
    • A flexible dielectric leaky-wave antenna at 160 GHz 

      Beitrag zu einer Konferenz
      Geiger, Martin; Hitzler, Martin; Waldschmidt, Christian (Universität Ulm, 2017)
      Flexible antennas provide the opportunity to place them on bent or moving surfaces. For leaky-wave antennas the mechanical flexibility offers a second possibility to modify the beam direction besides the frequency scanning ...
    • A wideband dielectric waveguide-based 160-GHz radar target generator 

      Wissenschaftlicher Artikel
      Geiger, Martin; Wegner, Christian; Mayer, Winfried; Waldschmidt, Christian (Universität Ulm, 2019-06-22)
      The increasing number of radar sensors in commercial and industrial products leads to a growing demand for system functionality tests. Conventional test procedures require expensive anechoic chambers to provide a defined ...
    • High-resolution 160 GHz imaging MIMO radar using MMICs with on-chip frequency synthesizers 

      Wissenschaftlicher Artikel
      Dürr, André; Schwarz, Dominik; Häfner, Stephan; Geiger, Martin; Roos, Fabian; Hitzler, Martin; Hügler, Philipp; Thomä, Reiner; Waldschmidt, Christian (Universität Ulm, 2019-04-09)
      A high-resolution frequency modulated continuous wave imaging radar for short-range applications is presented. A range resolution of about 1cm is achieved with a bandwidth of up to 16GHz around 160GHz. In order to overcome ...
    • Improved throat vibration sensing with a flexible 160-GHz radar through harmonic generation 

      Beitrag zu einer Konferenz
      Geiger, Martin; Schlotthauer, Denis; Waldschmidt, Christian (Universität Ulm, 2018-08-20)
      Speech can be recorded contact-free using the Doppler effect with a radar microphone and comprehensible results can be achieved even in a noisy environment. For that purpose, the transmit frequency must be higher than 100 ...
    • Radar taking off: New capabilities for UAVs 

      Wissenschaftlicher Artikel
      Hügler, Philipp; Roos, Fabian; Schartel, Markus; Geiger, Martin; Waldschmidt, Christian (Universität Ulm, 2018-10-12)
      Modern consumer and industrial unmanned aerial vehicles (UAVs) are easy-to-use flying sensor platforms. They offer stable flight, good maneuverability, hovering, and even waypoint flights in autopilot mode. For stabilization ...
    • RCS measurements of a human hand for radar-based gesture recognition at E-band 

      Beitrag zu einer Konferenz
      Hügler, Philipp; Geiger, Martin; Waldschmidt, Christian (Universität Ulm, 2016)
      This paper presents monostatic radar cross section (RCS) measurements of a human hand in the frequency range from 60GHz to 90 GHz. These values are important parameters for system designs in the emerging field of radar-based ...