Home > Publications > Publikationen

Publikationen

Haddadian, Sanaz;Scheytt, Christoph:

Analysis, Design and Implementation of a Fully Integrated Analog Front-End for Microwave RFIDs at 5.8 GHz to be Used with Compact MIMO Readers.

IEEE Journal of Radio Frequency Identification : pp. 1-1, 2020

Abstract

— in this paper we present the system and circuit level analysis and feasibility study of applying microwave Radio Frequency Identification (RFID) systems with multiple-input multiple-output (MIMO) reader technology for tracking machining tools in multipath fading conditions of production environments. In the proposed system the MIMO reader interrogates single-antenna tags and a high RFID frequency of 5.8 GHz is chosen to reduce the size of the reader’s antenna array. According to the requirements dictated by the performed system analysis at 5.8 GHz, a low power fully integrated analog front-end (AFE) is designed and fabricated in a standard 65-nm CMOS technology for low power passive transponders. Performance of the Differential Drive Rectifier (DDR) topology as the core of the energy harvesting unit is investigated in detail. A multistage DDR power scavenging unit is dimensioned to provide a 1.2 V rectified voltage for 20-30 kΩ load range, with a high power conversion efficiency (PCE) for high frequency and low input power level signals. The rectified voltage is then converted to a 1 V regulated voltage for the AFE and the baseband processor with 30 to 50 µW of estimated power consumption. Transistors with standard threshold voltage (VT) have been used for implementation. Measurements of the fabricated multi-stage configuration of the circuits show a maximum PCE of 68.8% at -12.46 dBm, and an input quality factor (Q-factor) of approximately 10. Amplitudeshift keying (ASK) demodulator and backscattering modulator with 80% modulation index, operating according to EPC-C1G2 protocol are applied for data transfer. The AFE consumes less than 1µW in the reading mode. The AFE tag chip is 0.55×0.58 mm2 .

Weblink

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9143170

Bibtex

@article{hniid=10202,
author = {Haddadian, Sanaz and Scheytt, Christoph},
title = {Analysis, Design and Implementation of a Fully Integrated Analog Front-End for Microwave RFIDs at 5.8 GHz to be Used with Compact MIMO Readers},
journal = {IEEE Journal of Radio Frequency Identification},
pages = {1-1},
year = {2020},
}

Copy bibTeX to clipboard

Permalink

https://www.hni.uni-paderborn.de/pub/10202