Radio-Frequency Identification Zones in Open Environments: Maximizing the reading probability of high-speed tags
- Resource Type
- Periodical
- Authors
- Xavier, A.; Celaschi, S.; Azana, N.; Shieh, P.; Santos, T.
- Source
- IEEE Antennas and Propagation Magazine IEEE Antennas Propag. Mag. Antennas and Propagation Magazine, IEEE. 59(4):62-72 Aug, 2017
- Subject
- Communication, Networking and Broadcast Technologies
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Antenna measurements
Radiofrequency identification
Radio frequency
Geometry
Couplings
Reflection
Electromagnetics
- Language
- ISSN
- 1045-9243
1558-4143
In this article, we consider the problem of determining the backscattered signal reading zone of a high-speed tag in an open environment as a function of system geometry and radiation features. A two-dimensional (2-D) parametric model using the Friis equation in a two-ray approximation is obtained. The model is applied to the problem of optimizing the reading time of the moving tag as a function of all system parameters. In particular, we consider the reading zone optimization as a function of all of a structure's position angles and relative distances. We find optimal positioning angles and apply a statistical model for predicting the reading failure probability as a function of electromagnetic parameters in addition to speed and reading rates. Measurements taken in an open environment over paved ground confirm the model predictions.