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This paper presents a compact dehydration measurement method, keeping in mind a system integration in a wristwatch housing. In contrast to the conventional measurement approach using two measurement antennas, the proposed measurement setup uses only one antenna and one metallic reflector. Measurements have been performed using a patch antenna immersed in a steel basin filled with a tissue-equivalent...
A new 94-GHz 4×4 phased array frontend capable of two-dimensional scanning with orthogonal polarizations for wireless communications and sensing has been investigated. The proposed phased array frontend resolves the RF signal leakage and isolation dilemma encountered in typical systems employing a single antenna for both transmission and reception, effectively maximizing the system's dynamic range...
The application of radio-frequency planar inductive sensors to non-destructive testing of carbon-fiber-reinforced polymer composites, that have become one of essentially important materials in various industry sectors, is discussed in this paper. It is shown that the sensor allows detecting surface and buried defect, and provide the means to evaluate their depth inside the composite.
Frequency-stepped continuous wave (FSCW) radars have been recently investigated in health care aiming at contactless health monitoring. The mono-static radar architecture is of particular interest due to its low cost. However, monostatic radars suffer from the leakage between the transmitter and receiver paths, which can drastically reduce the detection range of the radar. This paper proposes the...
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