By Topic

NFC-DynFS: A way to realize dynamic field strength scaling during communication

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Menghin, M. ; Graz Univ. of Technol., Graz, Austria ; Druml, N. ; Steger, C. ; Weiss, R.
more authors

Near Field Communication (NFC) shows potential in multiple areas like payment, identification, transport, etc. To enable these features to a larger group of users, NFC-capability is nowadays integrated in mobile devices like smart phones. This integration unfortunately leads to an increase of the device's battery drain because the transponder is powered by the provided magnetic field of the mobile device. To decrease this drain, power-management techniques like magnetic field strength scaling are used. Through this scaling the power transfer can be reduced to the transponder's required level. The challenge of this technique is to dynamically adapt the magnetic field strength to physical relation changes of the transponder even during communication. Without this adaption, scaling down the field can lead to the transponder's undersupply or energy is wasted through oversupply. This paper proposes a method, named NFC-DynFS, to realize this adaption and to proper scale the magnetic field strength. In a case study a system, to read digital business cards using NFC-DynFS, is simulated and implemented on real hardware. The power consumption results are evaluated and compared to implementations without NFC-DynFS. Furthermore, possible undersupplies of the transponder are investigated. It can be shown that, compared to implementations without field strength scaling, approximately 26% of the energy can be saved and an undersupply of the transponder can be avoided, until the reader's power transmission limit is reached.

Published in:

Near Field Communication (NFC), 2013 5th International Workshop on

Date of Conference:

5-5 Feb. 2013