Now showing items 1-8 of 8

    • 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 ...
    • 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 ...
    • 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 ...
    • Optically transparent patch antennas at 77 GHz using meshed aluminum 

      Beitrag zu einer Konferenz
      Hügler, Philipp; Zaky, Mohamad; Roos, Michael; Strehle, Steffen; Waldschmidt, Christian (Universität Ulm, 2019-04-25)
      A process to realize optically transparent patch antennas with double-sided aluminum metalization of meshed structures on fused silica is presented in this paper. For cost-saving manufacturing, aluminum is used as metalization ...
    • 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 ...