论文信息 - Directional in-quadrature orthogonal-coil antenna and an array thereof for localization within a human body in a Fresnel region

Directional in-quadrature orthogonal-coil antenna and an array thereof for localization within a human body in a Fresnel region

Body Area Networks (BANs) at a center frequency of 400MHz are not subject to the quasi-static limit, σ ≫ εω. This makes it possible to capitalize on established theoretical results for small antennas. Though the bulk of the body volume at 400MHz is still within the Fresnel region, major features of the classic far-field solutions may be readily applicable to BANs. In this study, we introduce the concept of a small directional receiving/transmitting antenna comprised of two small orthogonal coils (magnetic dipoles) driven/acquired in quadrature to create a highly-directional single-lobe beam into the body. An array of such radiators operating in the Fresnel region makes it possible to develop a simple yet effective localization algorithm within the body using RSS (Received Signal Strength) estimates for each individual element and superior to a receiving array of single-coil antennas.

S. N. Makarov | G. M. Noetscher | S. Makarov | G. Noetscher

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