Open AccessBook
Fresnal Zones in Wireless Links, Zone Plate Lenses and Antennas
Reads0
Chats0
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.Abstract:
From the Publisher:
The first book devoted solely to Fresnel zones in microwave/mm-wave electromagnetics, this comprehensive survey covers theory, design and practical applications.
Whether you are an experienced electromagnetics specialist or a newcomer to the field, whether you need practical design guidelines or a clear and concise exposition of the fundamentals, you'll find this book invaluable. Written by an acknowledged expert, the volume includes a detailed description of the application of Fresnel zones to microwave wireless communication links as well as a comprehensive description of the state-of-the-art in newly created zone plate lens and antenna technologies. It also contains an overview of the basic electromagnetic equations for time harmonic fields, and a thorough treatment of the Fresnel-Kirchoff diffraction theory.
If you are a researcher, practising engineer or student in wireless/electromagnetics, this authoritative resource will help you to understand Fresnel zones, zone plate devices and their practical uses, in particular the analysis and design of microwave communication links, Fresnel zone antennas for DBS, Fresnel zone plate lenses for radio telescopes, and conformal curvilinear zone plate antennas. The work is generously illustrated.read more
Citations
More filters
Proceedings ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
Toward Centimeter-Scale Human Activity Sensing with Wi-Fi Signals
Daqing Zhang,Hao Wang,Dan Wu +2 more
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.
Journal ArticleDOI
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
More filters
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.
Journal ArticleDOI
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.
Related Papers (5)
Millimeter-Wave Characteristics of Phase-Correcting Fresnel Zone Plates
D.N. Black,J.C. Wiltse +1 more