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A major issue in Wireless Body Area Networks (W-BAN) is the reliability of the transmission in all conditions, thus in all locations and positions of the wearer. One way to achieve this is to design communication systems as independent as possible to the presence of the wearer, and to use multiple antennas (diversity, MIMO) to overcome fading. Polarization diversity is a good candidate for W-BAN,...
Antennas are an important element of Wireless Body Area Network equipments, as the quality of the antenna and its coupling to the channel will be a key component of the quality of the overall link. Indeed, the antenna and its interaction with the body of the wearer will influence the reading distance, the emitted or received power, but also issues like the specific absorption rate. The design of an...
We evaluate the potential of a new generation microwave cavity by double resonance spectroscopic studies. Both, the cell and the microwave cavity are microfabricated. This allows a substantial size reduction for the physics package, without compromising the RF field geometry and the optical quality of the cell windows. We demonstrate short term stability of 5 × 10−12τ−1/2 (1–100 s), and below 1 ×...
This work presents the analysis of the influence of insulation on implanted antennas for biotelemetry applications in the Medical Device Radiocommunications Service band. Our goal is finding the insulation properties that facilitate power transmission, thus enhancing the communication between the implanted antenna and an external receiver. For this purpose, it has been found that a simplified model...
This work investigates the versatility and tunability of an electrically small implantable antenna. The radiator shows dual band capability working in both the Medical Device Radiocommunication Service (MedRadio, 401-406 MHz) and the Industrial, Scientific and Medical (ISM, 2.4-2.5 GHz) bands while inserted in a homogenous body phantom. A further miniaturized antenna (10 × 8.8 × 20 [mm]) with sufficient...
The present paper reports a planar, microstrip-fed Ultra Wideband (UWB) monopole antenna designed to operate inside a Universal Serial Bus (USB) dongle. The antenna was dielectrically loaded with a sandwich fabricated in commercial substrate. This design improves on a coaxial fed monopole presented earlier by showing a better matching through the UWB [3.1 - 10.6] GHz band. Wideband efficiency measurements...
The use of telemetry with implantable medical devices improves the quality of the health-care system facilitating home therapy. For this purpose, small biocompatible antennas are necessary to establish reliable communication systems. In this work we present a dual band antenna conceived to operate in vivo in a subcutaneous environment. The selected working frequencies are: the Medical Device Radiocommunication...
Research on bio-implantable monitoring and/or medication delivery systems has experienced a large increase in interest in the last few years. Indeed, recent advances in technology have allowed for the miniaturization of such systems, making them small enough to be routinely implanted in patients. One key aspect of bio-implants is the telemetry, allowing for the wireless communication between the implant...
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