Transponder Array System with Universal On-Sheet Reference Scheme for Wireless Mobile Sensor Networks without Battery or Oscillator

Takahide TERADA; Haruki FUKUDA; Tadahiro KURODA

doi:10.1587/transfun.E98.A.932

Transponder Array System with Universal On-Sheet Reference Scheme for Wireless Mobile Sensor Networks without Battery or Oscillator

Takahide TERADA, Haruki FUKUDA, Tadahiro KURODA

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Summary :

A rotating shaft with attached sensors is wrapped in a two-dimensional waveguide sheet through which the data and power are wirelessly transmitted. A retrodirective transponder array affixed to the sheet beamforms power to the moving sensor to eliminate the need for a battery. A universal on-sheet reference scheme is proposed for calibrating the transponder circuit delay variation and eliminating a crystal oscillator from the sensor. A base signal transmitted from the on-sheet reference device is used for generating the pilot signal transmitted from the sensor and the power signal transmitted from the transponder. A 0.18-µm CMOS transponder chip and the sheet with couplers were fabricated. The coupler has three resonant frequencies used for the proposed system. The measured propagation gain of the electric field changes to less than ±1.5dB within a 2.0-mm distance between the coupler and the sheet. The measured power transmission efficiency with beamforming is 23 times higher than that without it. Each transponder outputs 1W or less for providing 3mW to the sensor.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E98-A No.4 pp.932-941

Publication Date: 2015/04/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.E98.A.932

Type of Manuscript: PAPER

Category: Analog Signal Processing

Authors

Takahide TERADA
  Keio University
Haruki FUKUDA
  Keio University
Tadahiro KURODA
  Keio University

Keyword

two-dimensional waveguide sheet, wireless power transmission, retrodirective array, phase-conjugation, beamforming

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Takahide TERADA, Haruki FUKUDA, Tadahiro KURODA, "Transponder Array System with Universal On-Sheet Reference Scheme for Wireless Mobile Sensor Networks without Battery or Oscillator" in IEICE TRANSACTIONS on Fundamentals, vol. E98-A, no. 4, pp. 932-941, April 2015, doi: 10.1587/transfun.E98.A.932.
Abstract: A rotating shaft with attached sensors is wrapped in a two-dimensional waveguide sheet through which the data and power are wirelessly transmitted. A retrodirective transponder array affixed to the sheet beamforms power to the moving sensor to eliminate the need for a battery. A universal on-sheet reference scheme is proposed for calibrating the transponder circuit delay variation and eliminating a crystal oscillator from the sensor. A base signal transmitted from the on-sheet reference device is used for generating the pilot signal transmitted from the sensor and the power signal transmitted from the transponder. A 0.18-µm CMOS transponder chip and the sheet with couplers were fabricated. The coupler has three resonant frequencies used for the proposed system. The measured propagation gain of the electric field changes to less than ±1.5dB within a 2.0-mm distance between the coupler and the sheet. The measured power transmission efficiency with beamforming is 23 times higher than that without it. Each transponder outputs 1W or less for providing 3mW to the sensor.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E98.A.932/_p

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@ARTICLE{e98-a_4_932,
author={Takahide TERADA, Haruki FUKUDA, Tadahiro KURODA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Transponder Array System with Universal On-Sheet Reference Scheme for Wireless Mobile Sensor Networks without Battery or Oscillator},
year={2015},
volume={E98-A},
number={4},
pages={932-941},
abstract={A rotating shaft with attached sensors is wrapped in a two-dimensional waveguide sheet through which the data and power are wirelessly transmitted. A retrodirective transponder array affixed to the sheet beamforms power to the moving sensor to eliminate the need for a battery. A universal on-sheet reference scheme is proposed for calibrating the transponder circuit delay variation and eliminating a crystal oscillator from the sensor. A base signal transmitted from the on-sheet reference device is used for generating the pilot signal transmitted from the sensor and the power signal transmitted from the transponder. A 0.18-µm CMOS transponder chip and the sheet with couplers were fabricated. The coupler has three resonant frequencies used for the proposed system. The measured propagation gain of the electric field changes to less than ±1.5dB within a 2.0-mm distance between the coupler and the sheet. The measured power transmission efficiency with beamforming is 23 times higher than that without it. Each transponder outputs 1W or less for providing 3mW to the sensor.},
keywords={},
doi={10.1587/transfun.E98.A.932},
ISSN={1745-1337},
month={April},}

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TY - JOUR
TI - Transponder Array System with Universal On-Sheet Reference Scheme for Wireless Mobile Sensor Networks without Battery or Oscillator
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 932
EP - 941
AU - Takahide TERADA
AU - Haruki FUKUDA
AU - Tadahiro KURODA
PY - 2015
DO - 10.1587/transfun.E98.A.932
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E98-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2015
AB - A rotating shaft with attached sensors is wrapped in a two-dimensional waveguide sheet through which the data and power are wirelessly transmitted. A retrodirective transponder array affixed to the sheet beamforms power to the moving sensor to eliminate the need for a battery. A universal on-sheet reference scheme is proposed for calibrating the transponder circuit delay variation and eliminating a crystal oscillator from the sensor. A base signal transmitted from the on-sheet reference device is used for generating the pilot signal transmitted from the sensor and the power signal transmitted from the transponder. A 0.18-µm CMOS transponder chip and the sheet with couplers were fabricated. The coupler has three resonant frequencies used for the proposed system. The measured propagation gain of the electric field changes to less than ±1.5dB within a 2.0-mm distance between the coupler and the sheet. The measured power transmission efficiency with beamforming is 23 times higher than that without it. Each transponder outputs 1W or less for providing 3mW to the sensor.
ER -