Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ralf Brauns"'
Autor:
S. Leuchs, Ralf Brauns, Christopher Schwabig, Christian Krebs, Alex Shoykhetbrod, Dirk Nussler, S. Wickmann, Andries Kuter, Riana Geschke
Publikováno v:
2021 15th European Conference on Antennas and Propagation (EuCAP).
A drone detection FMCW radar operating from 57 to 64 GHz band has one transmit and two receiving fan-beam antennas. Due to the close integration of the system and enclosure, aspects related to board layout such as direct transmitter antenna to receiv
Publikováno v:
2018 15th European Radar Conference (EuRAD).
We present an experimental W-band imaging radar demonstrator to transmit and receive circular polarization from 88 to 110 GHz. It illuminates test objects with a circularly polarized lens antenna with 30 dBi gain and 3.5 degree beamwidth. For the det
Publikováno v:
2018 15th European Radar Conference (EuRAD).
Millimetre wave sensors are capable of measuring the structure and composition as well as detecting small variations thereof in a wide range of dielectric materials, such as plastics, dry goods and foodstuffs. To produce an image that modern image re
Autor:
Jasmin Steinbrecher, Ralf Brauns, Christian Krebs, Dirk Nüßler, Sabine Gütgemann, Andries Kuter
Publikováno v:
2017 European Radar Conference (EURAD).
Improvements in safety, quality and costs in industrial processes depend significantly on measuring the characteristics of products during their production process. Insensitivity to steam, dust and spray water, temperature independent measurements an
Publikováno v:
2016 German Microwave Conference (GeMiC).
The design and realisation of a high order bandpass filter for millimetre wave signals is presented. It is purely based on split-block hollow-metal waveguide technology. The synthesis process starting at the equivalent lowpass filter is demonstrated,
Publikováno v:
2015 European Microwave Conference (EuMC).
Millimeter wave imaging technologies offer a wide spectrum of new applications. Research results of the last year's show, that millimeter waves can be used to detect letter bombs and non-metallic impurities inside products or can be used to control m
Autor:
Alexander Hommes, Christian Krebs, Sven Heinen, Ralf Brauns, P. Warok, Sabine Gütgemann, W. Teichrib, S. Kose, Dirk Nüßler
Publikováno v:
2011 International Conference on Infrared, Millimeter, and Terahertz Waves.
The following paper describes the development of an autonomous and compact millimeter wave scanning measurement system (SAMMI — Stand Alone Millimeter wave Imager) which works in the W-Band (CW@78GHz). SAMMI® was developed to demonstrate the high
Publikováno v:
35th International Conference on Infrared, Millimeter, and Terahertz Waves.
The characterization of materials is one major task for systems which work e.g. in the field of quality or production control. One factor to analyze material volume information is the permittivity. The following paper describes a measurement method t
Publikováno v:
2009 German Microwave Conference.
The development of phased array systems is one of the most ambitious research areas for the millimeter wave frequency range. Different approaches have been made in the past to realize phased array antennas for this frequency range. Unfortunately unti
Autor:
A. Wahlen, Axel Tessmann, Jorn Wilcke, Winfried Johannes, Michael Schlechtweg, Ralf Brauns, Helmut Essen, S. Stanko, R. Sommer
Publikováno v:
2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves.
Millimeterwave radars at Ka- and W-band are state of the art and are used as well for civilian as military applications. The higher atmospheric windows, 140 GHz and 220 GHz, are not widely used to date. With the advance of automotive and security app