Remotely powered addressable UHF RFID integrated system

Curty, J.-P.; Joehl, N.; Dehollain, Catherine; Declercq, M.

doi:10.1109/jssc.2005.857352

Cited by 317 publications

(136 citation statements)

References 5 publications

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“…The rectifier input admittance is modeled as a parallel combination of a capacitor and a resistor mathematically represented as Y rec = G rec + j * Y c rec , where G rec and Y c rec represents the nonlinear input conductance and susceptance respectively [4]. To match the rectifier input impedance with the antenna (in this case a 50 Ω is considered) the imaginary part is compensated with a parallel inductor (L p ) which is represented by an equivalent series inductance (L s ) as shown in (Fig.…”

Section: Design Methodology For the Rectifiermentioning

confidence: 99%

Design methodology and comparison of rectifiers for UHF-band RFIDs

Mazzilli

Thoppay

Johl³

et al. 2010

2010 IEEE Radio Frequency Integrated Circuits Symposium

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Abstract-Rectifiers are important energy converters and henceforth crucial building blocks for RFID applications. In the first half of the work, we have presented a design methodology for matching the rectifier input impedance with the antenna to maximize the rectifier power conversion efficiency. The proposed design approach uses the fundamental transconductance (Gm(1)) analysis to estimate the rectifier input impedance. In the second half, a comparison between various possible single-stage rectifier topologies implemented in a CMOS 0.18 µm technology operating at UHF-band is presented. Using voltage conversion efficiency as the FOM, the optimum rectifier topology for RFID application is determined.Index Terms-CMOS, impedance matching, radio frequency identification (RFID), rectifiers, ultra-high frequency (UHF).

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Section: Design Methodology For the Rectifiermentioning

confidence: 99%

Design methodology and comparison of rectifiers for UHF-band RFIDs

Mazzilli

Thoppay

Johl³

et al. 2010

2010 IEEE Radio Frequency Integrated Circuits Symposium

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“…As the wake-up powers of tag ICs are reaching −18 dBm and below [13][14][15][16], very high realized tag antenna gain is no longer an absolute requirement for achieving one to three meters of read range. Consequently, as one of the issues with small antennas is the difficulty of achieving high radiation efficiency [21], for RFID applications where aggressive tag miniaturization is required, trading-off a portion of the radiation efficiency for size-reduction purposes may be a feasible design approach.…”

Section: Theoretical Background and Tag Performance Considerationsmentioning

confidence: 99%

Compact Metal Mountable Uhf Rfid Tag on a Barium Titanate Based Substrate

Björninen

Babar²,

Ukkonen³

et al. 2012

PIER C

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Abstract-The development of a compact metal mountable RadioFrequency IDentification (RFID) tag antenna on a ceramic substrate based on Barium Titanate is presented. The performance limitations and design trade-offs of metal mountable RFID tag antennas are reviewed and the favorable features of a high-permittivity antenna substrate for the development of antennas for metal mountable RFID tags are discussed. The simulation-based tag antenna design process is outlined and the measured read range of the developed metal mountable tag on conductive platforms of various sizes is presented.

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“…This is due to the increasing voltage required to forward bias all the diodes in the circuit. The designs presented in (Barnett et al, 2006;Bergeret et al, 2006;Bo et al, 2009;Curty et al, 2005;Facen & Boni, 2006;Karthaus & Fischer, 2003) provide details on specific implementations of this type of circuit. It is worth noting that the designs in (Barnett et al, 2006;Facen & Boni, 2006) contain additional rectification circuitry in front of the charge pump circuitry.…”

Section: Fig 1 Example Charge Pumpmentioning

confidence: 99%

“…Therefore, the RFID IC must be able to store enough energy during the matched impedance state to operate through the duration of the mismatched state. This is the approach taken in (Curty et al, 2005), where a simple two-transistor MOS switch is used to present either a matched impedance or a short-circuit to the antenna. This results in an amplitude-shift-key modulation of the RF signal transmitted by the RFID reader.…”

Section: Fig 1 Example Charge Pumpmentioning

confidence: 99%