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Spectrum is presently one of the most valuable goods worldwide as the demand is permanently increasing and it can be traded only locally. Since the United States Federal Communications Commission (FCC) has opened the spectrum from 3.1 GHz to 10.6 GHz, that is, a bandwidth of 7.5 GHz, for unlicensed use with up to −41.25 dBm/MHz EIRP, numerous applications(More)
A comprehensive model of the transmission channel between moving vehicles in realistic environments is presented in this paper. The approach consists of tree major parts: the modelling of the road traffic, the modelling of the environment adjacent to the road and the actual modelling of the wave propagation between the vehicles. A ray-tracing approach is(More)
I n this issue you will find two practical papers that should interest members of the EMC community. The first is entitled, " Comparison of Frequency Domain and Time Domain Measurement Procedures for Ultra Wideband Antennas, " by W. Sörgel, F. Pivit, and W. Wiesbeck. In this paper, the authors discuss the issue of characterizing antennas for ultra wideband(More)
– This paper is concerned with the calculation of the aggregate interference power from ultra-wideband devices received by a point to point communication system. The source based model for the aggregate interference power and its parameters are presented together with results for different sets of the parameter values. The results show that the applied wave(More)
The main objective of UWB antennas is capability of radiation over very wide bandwidth. But this is not a sufficient condition for proper operation with a pulse based system because different antennas radiate the pulses in different forms. That is why a temporal behavior of an antenna has to be also taken into account during the design. Also during(More)
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