MIMO FMCW Reader Concept for Locating Backscatter Transponders

Appel S, Berges D, Mueller D, Ziroff A, Vossiek M (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

IEEE Transactions on Microwave Theory and Techniques Institute of Electrical and Electronics Engineers (IEEE)

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 64

Pages Range: 2955-2967

Article Number: 7536605

Journal Issue: 9

DOI: 10.1109/TMTT.2016.2593918

Abstract

This paper presents a multiple-input multiple-output (MIMO) frequency-modulated continuous-wave (FMCW) reader concept for locating backscatter radio-frequency identification (RFID) transponders. The proposed MIMO concept enables transmitter sided digital beamforming after a measurement has been executed. An algorithm is presented to decompose the MIMO response to match a digital beamforming input matrix. A 2.4-GHz experimental reconfigurable localization system based on FMCW technology was set up to demonstrate the concept. Multichannels are implemented to allow the possibility of testing the MIMO concept. A frequency-division multiplexing was implemented into an MIMO FMCW RFID reader and successful tested. Moreover, the system is able to locate multiple transponders simultaneously. Measurements confirm the functionality of the concept. The implementation of a digital beamforming algorithm shows the possibility of transmitting and receiving sided spatial filtering. Angle and distance precision were determined in an antenna chamber as well as in a harsh multipath environment. To help readers to compare the system with others, the mean absolute error of the position shows the system accuracy in a laboratory environment. Finally, an error analysis of the decomposition algorithm verified its robustness.

Authors with CRIS profile

Sönke Appel Lehrstuhl für Hochfrequenztechnik Martin Vossiek Lehrstuhl für Hochfrequenztechnik

Involved external institutions

Siemens AG, Sector Corporate Technology DE Germany (DE) Technische Universität München (TUM) DE Germany (DE)

How to cite

APA:

Appel, S., Berges, D., Mueller, D., Ziroff, A., & Vossiek, M. (2016). MIMO FMCW Reader Concept for Locating Backscatter Transponders. IEEE Transactions on Microwave Theory and Techniques, 64(9), 2955-2967. https://dx.doi.org/10.1109/TMTT.2016.2593918

MLA:

Appel, Sönke, et al. "MIMO FMCW Reader Concept for Locating Backscatter Transponders." IEEE Transactions on Microwave Theory and Techniques 64.9 (2016): 2955-2967.

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