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Fresnal Zones in Wireless Links, Zone Plate Lenses and Antennas

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TLDR
In this article, the authors present a comprehensive survey of the application of Fresnel zones in microwave/mm-wave electromagnetics, including the theory, design and practical applications.
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Human respiration detection with commodity wifi devices: do user location and body orientation matter?

TL;DR: Leveraging the Fresnel model and WiFi radio propagation properties derived, the impact of human respiration on the receiving RF signals is investigated and the theory to relate one's breathing depth, location and orientation to the detectability of respiration is developed.
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GPS snow sensing: results from the EarthScope Plate Boundary Observatory

TL;DR: In this article, the authors use data from the EarthScope Plate Boundary Observatory to examine the potential for snow sensing in GPS networks and show strong correlations between the GPS snow depth estimates and the timing of snowstorms in the region.
Proceedings ArticleDOI

WiDir: walking direction estimation using wireless signals

TL;DR: WiDir is presented, the first system that leverages WiFi wireless signals to estimate a human's walking direction, in a device-free manner, based on Fresnel zone model and can estimate human walking direction with a median error of less than 10 degrees.
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Toward Centimeter-Scale Human Activity Sensing with Wi-Fi Signals

TL;DR: By allowing centimeter-scale human activity sensing with Wi-Fi signals, the Fresnel zone model could revolutionize wireless sensing and Internet of Things applications.
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Optical antennas for nano-photonic applications

TL;DR: In this paper, an antenna-coupled optical detector for the millimetre, infrared, and visible spectra has been proposed and tested in the mid-infrared with some positive results in the visible.
References
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Book

Advanced engineering electromagnetics

TL;DR: In this article, the authors introduce the notion of circular cross-section waveguides and cavities, and the moment method is used to compute the wave propagation and polarization.
Journal ArticleDOI

Equivalent circuit model for arrays of square loops

TL;DR: In this paper, a simple equivalent circuit model for square-loop arrays is presented, which predicts the plane-wave transmission characteristics for normal incidence, and a new member of the group of arrays for which simple equivalent circuits are available.

Analysis and design

Walid S. Saba
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Transmission through a Conducting Screen Perforated Periodically with Apertures

TL;DR: In this article, a general solution to the problem of determining first the aperture field distribution and then the transmission and reflection coefficients of an infinite planar conducting sheet perforated periodically with apertures has been formulated.
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