A Backscatter Field Model for Near-Field RF Sensing - MTT-S
Motion in the near field is calculated with a differential backscatter model for electromagnetic field perturbation of the electric dipole mode of a dielectric sphere produced by the motion of the sphere in the near field.
3 - Backscatter Communications: Fundamentals and Recent …
Chapter 3 discusses the fundamentals of backscatter radio communications, analyzes the RFID backscatter channel, its major limitations and mitigation approaches, and presents recent advances including novel RFID quadrature backscatter modulation techniques.
Ambient Backscatter •Communication between two battery-free devices. One such device, Alice, can backscatter ambient signals that can be decoded by other ambient backscatter devices. •To legacy receivers, this signal is simply an additional source of multi-path, and they can still decode the original transmission. Legal issues in licensed ...
A Backscatter Field Model for Near-Field RF Sensing
Jul 17, 2023 · In this article, we proposed a semianalytical model based on the electromagnetic field perturbation of the electric dipole (ED) mode of a dielectric sphere. Our proposed model analyzed how the changes in object shape, antenna pair position, and carrier frequency affect the backscattered field.
Magnetic Backscatter for In-body Communication and …
Oct 2, 2023 · We present InnerCompass, a magnetic backscatter system for in-body communication and localization. InnerCompass relies on new magnetism-native design insights that enhance the range of these devices. We design the first analytical model for magnetic-field-based localization, that generalizes across different scenarios.
We present InnerCompass, a magnetic backscatter-based localization and communication system for in-body devices that does not require any fingerprinting or model training. InnerCompass uses small tags and small out-of-body coils. It uses low-power magnetic backscatter for both communica-tion and localization. It causes 100 dB less radiation ...
6 - Backscattering Wireless-Powered Communications
Dec 1, 2016 · Basically, backscatter communication is a technique that allows wireless nodes to communicate without requiring any active radiofrequency (RF) components on the tag [2].
Near Field Communication (NFC) technology is a new wireless short range communication technique for data transmission between intelligent devices such as mobile phones by integrating a small...
By using radio frequency (RF) backscatter, a remote reader can power up the data source of a tag device and the tag modulates the RF reflections back into the propagation channel for data communications. In this technique, the tag device remains. The paper submitted on July 2018.
Experimental characterisation of near field backscatter from …
Nov 1, 2017 · Experimental results are employed to show that a thin metal backed resistively loaded frequency selective surface (FSS) exhibits significant radar backscatter suppression when the structure is illuminated by an antenna placed in close proximity to the periodic array.