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This contribution presents and discusses the results of several measurement campaigns carried out at the CEA-Leti far-field antenna test facility over a wide frequency band (50 MHz–90 GHz). The experimental results are also compared to the simulated one obtained using ad-hoc simulation tools or commercial 3D electromagnetic software. Specific measurement setups dedicated to electrically small antennas...
This communication presents the design of a linearly polarized transmitarray antenna for backhauling applications at V-band (57–66 GHz). The antenna is composed of a planar circular-shape array with 1264 unit-cells (UCs) printed on a three-metal layer standard printed circuit board, an ad hoc focal source, and a radome layer. A 3-b phase resolution has been selected to achieve a gain higher than 31...
This paper presents a radio channel measurement campaign at 2.4 GHz conducted in a nuclear power plant. The aim of this study is to investigate radio propagation characteristics in this particular industrial environment. Given the presence of thick concrete walls and large metallic structures, the propagation conditions are expected to be very harsh. Path loss models and fading statistics have been...
This paper presents a double polarized model of UWB backscattering channel for passive RFID applications enabling identification and localization. The path losses, polarization distribution and power delay profile have been modeled for different indoor scenarios and two different tag antennas.
In this paper we present a characterization of the propagation channel for in-car wireless sensor networks. Measurements were performed in two ISM bands at 2.4 GHz and 868 MHz. The effect of surrounding environment as well as antenna orientation and emplacement are investigated.
This paper presents a compact Ultra Wide Band (UWB) antenna designed to operate at lower than 1 GHz frequencies. Based on a particular physical interpretation of the antenna working mode illustrated by an equivalent wide band circuit model, specific developments have been carried out to miniaturize the antenna and to keep the wide band behaviour with slightly altered radiation efficiency. Time domain...
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