Large-Area Electronics HF RFID Reader Array for Object-Detecting Smart Surfaces

Mehlman, Yoni; Kumar, Prakhar; Ozatay, Murat; Wagner, S.; Sturm, James C.; Verma, Naveen

doi:10.1109/lssc.2019.2902063

Cited by 10 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We start with a discussion of these passives, and then overview the systemprototyping methodology pursued. Then, we describe three circuit and system case studies: a 1.25 𝐺𝐺𝑀𝑀𝑀𝑀 cross-coupled inductor-capacitor (LC) oscillator [18]; a 13.56 𝑀𝑀𝑀𝑀𝑀𝑀 RFID reader array [61]; and a 1 𝐺𝐺𝑀𝑀𝑀𝑀 phased array [16]. With the LC oscillator serving as the foundational block for all three case studies, we then revisit its design and analysis considering the NQS effect, illustrating its importance for future efforts pushing to higher-frequency LAE systems.…”

Section: Case Study Of High Frequency Lae Circuits and Systems Based ...mentioning

confidence: 99%

See 1 more Smart Citation

Device, Circuit, and System Design for Enabling Giga-Hertz Large-Area Electronics

Fata

et al. 2022

IEEE Open J. Solid-State Circuits Soc.

View full text Add to dashboard Cite

Recent progress has substantially increased the operating frequency of large-area electronic (LAE) devices. Their integration into circuits has enabled unprecedented system-level capabilities, towards future wireless applications for the Internet of Things (IoT) and 5G/6G. These exploit large dimensions and flexible form-factors. In this work, we focus on giga-Hertz (GHz) zinc-oxide (ZnO) thin-film transistors (TFTs) as a foundational device for enabling GHz LAE circuits and systems. To further understand their operation and limits in the newly possible frequency regime, we incorporate the effects of temperature and of nonquasi-static (NQS) physics into the device models. We then analyze operation including these effects on a fundamental circuit block, the cross-coupled inductor-capacitor (LC) oscillator. It is used in representative LAE systems, namely a 13.56 𝑀𝑀𝑀𝑀𝑀𝑀 radiofrequency identification (RFID) reader array for near-field energy transfer, and a 1 𝐺𝐺𝑀𝑀𝑀𝑀 phased array for far-field radiation beam steering. Co-design of devices, circuits, and systems is essential for achieving flexible and meter-scale monolithic integrated LAE wireless systems. For these, understanding temperature limitations and the NQS effect is crucial.

show abstract

Section: Case Study Of High Frequency Lae Circuits and Systems Based ...mentioning

confidence: 99%

“…RFID is a foundational technology for IoT [62], [63]. Based on oscillators employing ZnO TFTs, a large-area 5 × 5 active-matrix RFID reader array was demonstrated to read from distributed commercial ISO14443 13.56 𝑀𝑀𝑀𝑀𝑀𝑀 tags [61]. In the system architecture shown in Fig.…”

Section: Rfid Reader Arraymentioning

confidence: 99%

Device, Circuit, and System Design for Enabling Giga-Hertz Large-Area Electronics

Fata

et al. 2022

IEEE Open J. Solid-State Circuits Soc.

View full text Add to dashboard Cite

show abstract

“…1(b)). Organic-TFT-based integrated circuits that have been reported to date include data converters [1], [2], DC-DC converters [3], radio-frequency identification (RFID) tags [4], [5], sensors and sensor interfaces [6]- [11], static random access memories (SRAM) [12], [13], hardware security [14], Internet of Things applications [15], and biomedical sensors and signal front-ends [16]- [19]. Masoud The fabrication process of p-channel organic TFTs with adequate performance and stability has advanced quite far.…”

Section: Introductionmentioning

confidence: 99%

Source-Degenerated Schmitt-Trigger-Based High-Performance Digital Logic for Flexible Organic Thin-Film Transistor Technologies

Seifaei¹,

schillinger²,

Prabhu³

et al. 2023

Preprint

View full text Add to dashboard Cite

<p>A resistive Schmitt-trigger (RST) logic is proposed. Based on this architecture, a digital cell library was designed, and basic logic-gate architectures, ring oscillators, edge-sensitive D-type flip-flops and a pad-driver cell were fabricated using low-voltage p-channel organic thin-film transistors (TFT) and integrated thin-film carbon resistors on flexible polymeric substrates. Theoretical analysis and experimental characterization of the RST logic architecture indicate improved stability against device-parameter mismatch and charge-carrier-mobility degradation. A small-signal gain of 83 dB and a noise margin of 92 % of half the supply voltage have been measured. Owing to the intrinsic positive-feedback loop of the RST logic, the design of the D-flip-flop enables a substantially smaller footprint and a considerably lower energy dissipation compared to previously reported unipolar organic-TFT-based D-flip-flops.</p>

show abstract

“…The lack of phase information limits algorithms to exploitation of relative signal strength (RSS) and prevents accurate rangeand direction-finding. Despite this, antennas with improved spatial selectivity [6]- [9] and antenna arrays [10,11] have both been developed. HF RFID tag location has been used for inventory management [12], [13], and tag arrays have been used for navigation [14]- [19].…”

Section: Introductionmentioning

confidence: 99%

HF RFID Tag Location Using Magneto-Inductive Waves

Syms

Voronov

Sydoruk

2022

IEEE J. Radio Freq. Identif.

View full text Add to dashboard Cite

Location of passive RFID tags in the HF regime presents significant problems, because of the absence of radiating fields at the low frequencies involved. Here we present a solution for one-dimensional localization based on magneto-inductive (MI) waves. Passive tags are interrogated using a travelling wave antenna based on a MI waveguide, a magnetically coupled array of 𝑳 − 𝑪 resonators supporting travelling waves. Load modulation signals generated by the tag during its unique identifier response are coupled into the waveguide and travel to either end with low group velocity. Signal timings are measured by cross-correlation, and the tag position is estimated to the nearest resonant loop from the difference in their arrival times. Correlation detection is demonstrated using a system model, and theoretical predictions are confirmed using an experimental system containing eleven transformer-coupled resonators operating at 13.56 MHz frequency. Accurate localization is obtained up to the tag reading limit using <1W RF power.

show abstract

Large-Area Electronics HF RFID Reader Array for Object-Detecting Smart Surfaces

Cited by 10 publications

References 5 publications

Device, Circuit, and System Design for Enabling Giga-Hertz Large-Area Electronics

Device, Circuit, and System Design for Enabling Giga-Hertz Large-Area Electronics

Source-Degenerated Schmitt-Trigger-Based High-Performance Digital Logic for Flexible Organic Thin-Film Transistor Technologies

HF RFID Tag Location Using Magneto-Inductive Waves

Contact Info

Product

Resources

About