Tutorial: Near-Field Wireless Technology

This tutorial gives you 3 IEEE Professional Development Hours.

Hans G. Schantz, CTO
Q-Track Corporation
Date: Wednesday, April 15, 2015
Time: 8:30am – 12pm

Near-field wireless technology is an emerging area of great importance in RFID. Specific applications including low frequency (LF) and high frequency (HF) RFID, Near-Field Communications (NFC), and Near-Field Electromagnetic Ranging (NFER). This tutorial will discuss the origins of near-field wireless, describe the basics of near-field electromagnetics, present near-field links laws, review the properties and performance of electrically-small antennas and survey the many applications of near-field wireless. 


  • Near-Field Origins of Wireless Technology
    • Railway Telegraphy
    • Near-Field Wireless of Edison and Others
    • Preece’s Inductive Wireless System
    • Tesla’s Power Transfer and Wireless Systems
    • Hertz and the Origins of Far-Field Wireless
  • Basics of Near-Field Electromagnetics
    • What is the Near Field?
    • Near-Field Impedance
    • Near-Fields and Energy Flow
    • “Near” Fields in Interfering Waves
    • Near-Fields around Dipoles and Small Antennas
  • Near-Field Wireless Engineering
    • Near-Field Link Laws
    • Near-Field Antenna Gain
    • Near-Fields and FCC Limits
  • Applications of Near-Field Wireless
    • RFID
    • Near-Field Communications (NFC)
    • RuBee (IEEE 1902.1)
    • Wireless Power Transfer
    • Near-Field Electromagnetic Ranging (NFER)

About the Presenter

Schantz Hans G. Schantz received degrees in engineering and physics from Purdue University in 1988 and 1990, respectively. He earned his Ph. D. degree in theoretical physics from the University of Texas at Austin in 1995.

His work experience includes stints with IBM, the Lawrence Livermore National Laboratory, ITT Technical Institute, and the ElectroScience Lab of the Ohio State University. In 1999, he joined Time Domain Corporation in Huntsville, AL as an Antenna Engineer. His pioneering work in ultrawideband (UWB) antennas led to one of the first commercially deployed UWB antennas and the first frequency-notched UWB antennas. He is the author of The Art and Science of Ultrawideband Antennas (Norwood, MA: Artech House, 2005), and an inventor on a total of 40 U.S. patents. He was a co-inventor of near-field electromagnetic ranging technology. Since 2002 he has been Chief Technical Officer for Q-Track Corporation (www.q-track.com) in Huntsville, AL. Q-Track employs the near-field properties of 1MHz 300m wavelength signals to localize transmit tags to an accuracy of 1m or better in complicated indoor environments. Dr. Schantz’s research interests include electromagnetic energy flow, UWB antennas, electrically small antennas, and low-frequency, near-field systems and propagation.

Dr. Schantz is a Senior Member of IEEE and a member of the Institute of Navigation.