Difference between revisions of "PX505 Innovation Project"
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File: | File:Figure0-1.png|Fig. 1: S11 measured at the VNA for different GPIO modes of a PIC16. | ||
File:figure2-1.png|Fig. 2: <math>|\rho|^2</math> for a dipole antenna in the 2 different states. | File:figure2-1.png|Fig. 2: <math>|\rho|^2</math> for a dipole antenna in the 2 different states. | ||
File:figuree3-1.png|Fig. 3: Polar representation of <math>\rho</math> in the 2 different states. | File:figuree3-1.png|Fig. 3: Polar representation of <math>\rho</math> in the 2 different states. | ||
Revision as of 12:15, 10 June 2021
Backscattering Using Classical MCU
Students
- Anton Dumas
- Alexandre De Carlo
- Arnaud Voisin
- Bastien Lemaire
Subject
Backscattering Communications Using Classical Micro-Controller is a project based on the compelling idea proposed by [1] where a transmission can be done without using any RF chip. By modifying the internal state of GPIOs connected to an antenna, it is possible to modulate the backscattered signal of a remote reader. This technique allows to reduce the number of component of the system and decrease the power consumption.
This modulated power can be linked to the delta RCS introduced in [2] which allows to extract read range of the system.
Results
Fig. 1: S11 measured at the VNA for different GPIO modes of a PIC16.
Fig. 2: for a dipole antenna in the 2 different states.
- Figuree3-1.png
Fig. 3: Polar representation of in the 2 different states.
Fig. 4: Delta RCS as a function of the frequency.
Fig. 5: Read range as a function of the frequency.
Fig. 6: Modulated signal observed at the spectrum analyzer.
- ↑ A. Dadkhah, J. Rosenthal and M. S. Reynolds, "ZeroScatter: Zero-Added-Component Backscatter Communication Using Existing Digital I/O Pins," 2019 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet), Orlando, FL, USA, 2019, pp. 1-3
- ↑ P. V. Nikitin, K. V. S. Rao, and R. D. Martinez, “Differential RCS of RFID tag,” Electronics Letters, vol. 43, no. 8, pp. 431–432, Apr. 2007.