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High-Resolution Power Density Measurement Technique in the Near-Field Accounting for Antenna/Body Coupling at Millimeter-Waves

Abstract : This letter introduces a technique for the power density (PD) pattern measurement in the near field taking into account the antenna/body coupling at millimeter waves (mmW). The proposed method employs a specifically designed structure reproducing the reflection coefficient from human skin. This structure is optimized to convert the absorbed PD into an infrared (IR) pattern, remotely recorded using a high-resolution IR camera for reconstruction of the PD distribution. As a validation example, numerical and experimental distributions are presented for a 4element patch antenna array and a conical horn antenna at 60 GHz. A very good agreement is demonstrated between simulations and measurements (correlation > 98%). The results suggest a strong potential of this technique for fast remote high-resolution PD measurements applied to characterization of wireless devices in vicinity of the human body.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-03328820
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Submitted on : Monday, August 30, 2021 - 1:40:29 PM
Last modification on : Tuesday, October 19, 2021 - 10:36:38 PM

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Massinissa Ziane, Maxim Zhadobov, Ronan Sauleau. High-Resolution Power Density Measurement Technique in the Near-Field Accounting for Antenna/Body Coupling at Millimeter-Waves. IEEE Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers, 2021, ⟨10.1109/lawp.2021.3087019⟩. ⟨hal-03328820⟩

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