Path loss characterization of horn-to-horn and textile-to-textile on-body mmWave channels at 60 GHz

Abstract

Abstract-Wireless body area networks have raised considerable attention within the wireless personal area community. To optimize the network architecture and the energy consumption of on-body equipments, a good knowledge and understanding of the radio link and the propagation channel are required. This work addresses the influence of medium presence on the reflection loss of horn and textile antennas. In particular, the path loss in free space and under skin-equivalent phantom of horn-to-horn and textile-to-textile communications is presented. The obtained results show that the path loss differs considerably in the analyzed situations; with horn-to-horn links showing a path loss exponent between 1.13 and 2.35, while it is reaching 4.7 for textile-totextile links. The obtained results provide additional input for the design of communications links in the context of future 5G and IoT eco-systems.

60 GHz SIW horn antenna : Off-body performance comparison with 4 GHz UWB monopole antenna

“…In the context of BAN, once the antenna is located on the human body, its radiation properties change drastically. Available propagation channels that are measured in BAN context either depends on the antenna that have been used to perform the channel measurements [2] or take into account a part of human tissues as part of the radiating structure [3] in order to deembedd the antenna behavior from the channel. It was shown in [4] for a SIW (Substrate Integrated Waveguide) horn antenna that its gain and efficiency vary with the antennabody spacing when simulated.…”