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For the modeling and design of communication systems in the lower THz frequency range the propagation conditions need to be known. We show a comparison of ultra broadband channel measurements from 50 GHz to 325 GHz in different scenarios related to typical office and industry environments.
We have designed 4x4-phased-array patch antennas at 77 and 94 GHz using simulations based on the finite integration technique in the time-domain. The antennas are designed for communications and for the development of antenna measuring techniques. They have been fabricated and characterized with regard to input impedance and antenna diagrams.
Due to the pervasive use of broadcasting devices for mobile applications, ambient levels of radio frequency (RF) power, particularly in cities and work places, tend to increase in the EU. The project described here will enable directive EC 2004/40/EC “Physical Agents Directive” to be implemented across Europe by ensuring that the necessary artefact standards and measurement techniques exist to allow...
This paper gives an overview of current issues in the field of mm-wave and THz communications. A concept for radio channel modeling is presented together with the latest channel investigation results in this frequency range. In addition we discuss the status quo of standardization activities and the worldwide ongoing spectrum allocation plans.
Using THz time-domain and FTIR spectroscopy we measure the far-infrared absorption spectra of various biomolecular crystals with different numbers of hydrogen bonds of different strengths. The experimental data are compared to density functional theory calculations.
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