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This paper considers a liver implanted antenna and its associated radio telemetric channel using ultra wideband (UWB) technology. The performance of both the implant antenna and the radio channel is evaluated numerically and experimentally using human equivalent multilayer phantom to obtain S-parameter results within the 4–8 GHz band for various distances between the implanted antenna and a body-worn...
This paper presents an experimental analysis of the effect of physical orientation of a compact UWB antenna on the accuracy of range estimates between two such antennas using signal time-of-flight. A pair of identical miniature UWB antennas have been used for the investigations, in which one of the antennas is rotated in various directions in the vertical plane and the effect of this rotation on the...
This letter presents numerical and experimental investigations of the fidelity factor of a novel coplanar waveguide (CPW)-fed miniature tapered-slot antenna. Different excitation pulse types have been employed to study the effect of the antenna and the propagation channel on the received pulse quality. The antenna is intended to be used in a pulse-based time-of-flight motion tracking system, which...
This paper presents numerical and experimental study of the influence of various types of simplified human equivalent phantoms and actual human body on the reflection coefficient and bandwidth of a miniature ultra-wideband antenna. Four multi-layered body models, with different geometries and cross-sections, along with both dispersive and non-dispersive characteristics have been used in the analysis...
This paper presents an experimental study of localisation of a body mounted ultra-wideband (UWB) antenna. Several three-dimensional localisation experiments have been performed, using a miniature tapered-slot antenna mounted on the human body as a mobile station and three Vivaldi antennas as base stations, to comprehend the level of accuracy that can be achieved and assess how precisely the tiny movements...
This paper presents an investigative study of the ranging capabilities of a miniature tapered-slot UWB antenna and an analysis of the influence of the human body on the accuracy of range estimates. The study involves determining how precisely the point-to-point distance between two identical tapered-slot antennas can be deduced through the signal Time-of-Flight from the transmitting antenna to the...
This paper presents a miniature wideband antenna with a CPW feed fabricated on a Rogers RO 3210 substrate for operation in the top half of the UWB band for utilization in wearable systems, in particular a UWB pulse based time-of-flight motion tracking system. This miniature antenna makes use of a compact SMP connector instead of the traditional SMA coaxial connector. Use of SMP connector further helps...
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