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The skin response to high radio frequency has been associated with the human physical condition and most prominently with the stress. The objective of this study is to investigate the possibility to detect mental and light physical stress through the measurement of skin reflectance in the mm-wave/sub-THz band. Two frequency bands have been considered, 75–110 GHz (Band-I) and 325–500 GHz (Band-II),...
In this paper a promising antenna solution for a cochlear implant is presented. Proposed solution is based on folded loop antenna. The antenna and proper matching circuit is leading to increase the antenna operational bandwidth as well as radiation efficiency. The loop antennas and proper matching circuit are co-integrated with a magnet and a coupling loop for wireless powering sealed in a silicone...
A planar dipole antenna for on-body channel propagation study has been designed. It operates at center frequency of 2.45 GHz. The antenna has an integrated balun on the same substrate, which makes its impedance and radiation performance less susceptible to the presence of a human body. The path gain between two identical antennas is measured as a function of their position on the human head. These...
An interferometric radar operating between 6 and 9 GHz for non-invasive measurement of the respiration rate, is presented. An adaptive RF front-end tracks slow body movements by changing the operating frequency such that the sensing system always operates in its optimum point. Experimental results have been obtained from human beings and the good correlation between the radar signals and a reference...
A FM-UWB transceiver prototype operating in the 7.2 – 7.7 GHz band based upon 3 full-custom ICs is presented. Receiver sensitivity is −85 dBm for a BER of 10−6 at 62.5 kbps. A range of 15 meters is demonstrated under LOS conditions. Power consumption of a SoC version is estimated at 5 mW for the transmitter and 14 mW for the receiver. Subcarrier FDMA multiple access and robustness to narrowband interference...
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