Author Archives : Hans

About Hans

Hans Schantz is CTO of The Q-Track Corporation, and a co-inventor of NFER® technology. His prior work experience includes stints with IBM, the Lawrence Livermore National Lab, The ElectroScience Lab of the Ohio State University, and Time Domain Corporation. Author of The Art and Science of Ultra-wideband Antennas (Artech House, 2015), his forty one U.S. patents include antennas, RF systems, RF-based location systems, and related inventions. He is a Senior Member of the IEEE, a member of the Institute of Navigation, and an amateur radio operator [KC5VLD]. Schantz earned his Ph.D. in physics from the University of Texas at Austin. He also holds degrees in Industrial Engineering and Physics from Purdue University. Dr. Schantz blogs at ÆtherCzar and is @ÆtherCzar on Twitter. His wife, Barbara, invented The Baby Dipper® Bowl. Hans and Barbara have two sets of twins: girls aged ten, and boys six years old. The views expressed are the author's and are not necessarily the views of his employer, clients, investors, sponsors, or customers.

ATLOSCon 2015
I’m presenting a talk on “Fields Versus Action-At-A-Distance” at ATLOSCon 2015 in Atlanta this morning. This talk focuses on the conflict between the action-at-a-distance and the field approach to physical understanding from the days of Newton and Descartes to the present. Faraday devised the field concept in reaction to then prevalent […]

Fields Versus Action At A Distance – How Electromagnetics Works

Some distinguished early readers offer enthusiastic reviews for the revised second edition of The Art and Science of Ultrawideband Antennas. “Schantz introduces time domain methods in antenna engineering and microwave techniques, which relate to ultrawideband signals in this expanded second edition. The book is delightfully illuminating, and includes well-researched historical […]

Enthusiastic Reviews for The Art and Science of UWB Antennas

At long last I’m done with my book so I have time to update my blog. I will be making some changes over the next week, so don’t be surprised if you happen across some formatting glitches. Also, I have a few comments pending to which I’ll respond soon.


A combined Smith-Carter chart shows the impedance of ideal electric and magnetic dipole fields normalized to free-space impedance. 1
This week, I’ll be presenting my paper on “A simple procedure for measuring gain of very electrically small antennas” at the 2014 Loughborough Antenna and Propagation Conference. Gain measurements of very electrically small antennas (VESAs) present special challenges. These antennas radiate with poor efficiency, and great care is needed to […]

A Simple Procedure for Measuring Gain of Very Electrically Small Antennas

Today, I am presenting a seminar on some diverse topics for the folks in the Antennas and Electromagnetics Research Group at Queen Mary University, London. Here are links to some slides: Three Centuries of UWB Antennas Near-Field Wireless Technology The Time Domain, Superposition, and How Electromagnetics Really Works A couple […]

Seminar at Queen Mary University, London

Last week, I traveled to the Allerton Park and Retreat Center to present a new paper on fundamental electromagnetic physics at the 2014 Antenna Applications Symposium. My paper, “On Energy Flow in Standing Waves,” analyzes and explains the propagation of energy in a variety of standing waves. The conventional point […]

On Energy Flow in Standing Waves

The Heaviside Memorial Project recently completed their restoration of the memorial Heaviside's
The Heaviside Memorial Project successfully raised funds and completed the restoration of the memorial to Oliver Heaviside and his family in the Paignton Cemetary near Torquay, Devon. Details and additional photos of the unveiling ceremony are available at their web site. The group, organized by the Newcastle Electromagnetics Interest Group […]

A Heaviside Update – Memorial Project to Republish Heaviside Biography

Heaviside Grave 2
He developed the theory of transmission lines, coined such terms as inductance, impedance, and admittance, and rewrote James Clerk Maxwell’s awkwardly expressed equations into the vector form familiar to any student of electromagnetics. Today, Oliver Heaviside’s neglected tombstone is barely legible and is beginning to lean. Chris Spargo and Professor […]

Help Restore the Heaviside Memorial

Time Domain PulsON Logo
Yesterday, UWB pioneer Time Domain announced their acquisition by a private equity group led by Bonaventure Capital and Fidelis Capital. Time Domain did not disclose the terms of the transaction. Additional details are available in a statement from the company and in coverage from the Huntsville Times.

UWB Pioneer Time Domain Acquired

I’ll be presenting my short course on UWB antennas at the IEEE Antennas and Propagation Symposium (APS) in Memphis, TN on Sunday July 6. This is the first time I’ve been back to IEEE APS since 2007, and my short course includes some interesting revisions from the second edition of […]

UWB Antenna Short Course

One benefit of working at Q-Track is the opportunity to collaborate with talented people for whom  radio is a passion, not just a profession. This past weekend, my Q-Track colleague, Mark Brown [N4BCD], participated in the American Radio Relay League (ARRL) “Field Day.” The weekend-long exercise tests the ability of […]

Amateur Radio Field Day

Near-field wireless technology is an emerging area of great importance in Radio Frequency Identification (RFID). Specific applications include low frequency (LF) and high frequency (HF) RFID, Near-Field Communications (NFC), Near-Field Electromagnetic Ranging (NFER), and wireless power transfer. This talk discusses the origins of near-field wireless, surveys applications, presents near-field links […]

Near-Field Wireless Technology – Video Available

PBS Frontline offers a comprehensive and chilling account of the birth, growth, and evolution of the surveillance state. This is a must-see documentary that puts together all the pieces I only thought I understood from 9/11 to Edward Snowden’s leaks. Here’s Part 1. The second part airs this evening.

Frontline: United States of Secrets

The 2014 Atlanta Objectivist Society Conference (ATLOSCon) is coming up over Memorial Day weekend. The annual event brings together over sixty attendees for an action-packed program of lectures, workshops, and activities. The fun kicks off the evening of Thursday May 22, and concludes Monday May 26. I’ll be presenting a talk […]

ATLOSCon is Coming!

I didn’t have time to address a few additional points in my previous post on creativity and innovation. In this post, I wanted to sumarize the evidence underlying my claim that most of innovation results from industry reworking, improving, and advancing existing technology and not from the direct application of […]

Some More Thoughts on Creativity and Innovation

Creativity Slides
This evening, I will be presenting a talk “Some Thoughts on Creativity and Innovation” at Neurostimulation: Stimulating change in patient care by 2024 sponsored by Cambridge Consultants. If you are surprised why an RF scientist with expertise in antennas and near-field wireless systems is speaking at a conference on neurostimulation, […]

Some Thoughts on Creativity and Innovation

Auburn University recently announced that the RFID Research Center will be moving to Auburn from the University of Arkansas. Here’s a summary of coverage: RFID Journal | Arkansas RFID Research Center Moving to Auburn University RFID 24-7 | New RFID Lab will focus on the store of the future Birmingham […]

RFID Research Center Moves from Arkansas to Auburn University

The Hugo-nominated short story “Opera Vite Aeterna (epub, mobi)” by Vox Day touches on questions of immortality and religion in the context of a well-crafted tale of friendship, loyalty, and betrayal. My review includes many spoilers, so I strongly recommend you read it yourself, before continuing – after the break.

Review of “Opera Vita Aeterna” by Vox Day

Some interesting and informative links from around the net: Via The Art of Manliness, here’s “How to Survive a Lightning Strike,” “Why I Am Not An Environmentalist: The Science of Economics Versus the Religion of Ecology,” by Steven E. Landsburg, excerpted from The Armchair Economist: Economics and Everyday Life, Sean […]

Some Interesting Links

Hiawatha Bray
Writing an engaging and interesting book on a technical subject poses a significant challenge. Dive too deeply into the technical minutiae and you risk boring non-technical readers. Skim too superficially and you fail to do the subject justice.  In his new book, You Are Here: From the Compass to GPS, […]

Review: You Are Here – Hiawatha Bray

The Orange County Convention Center in Orlando housed the 2014 RFID Journal Live Tradeshow. 1
The last couple of weeks were action packed. Two weeks ago, I spoke at the Texas Wireless and Microwave Circuits and System Symposium at Baylor University in Waco (see my post “Demystifying Electromagnetic Superposition“). Last week, I joined the Q-Track team in Orlando for RFID Journal Live, our industry’s leading […]

Q-Track Wins “Coolest Demo” Award at RFID Journal Live

IEEE Logo 3 1
The Q-Track gang is in Orlando, Florida this week  for RFID Journal-LIVE, the world’s premier conference and exhibition focused on radio frequency identification (RFID) and its many business applications. The tradeshow is underway April 8-10, 2014, at the Orange County Convention Center, located in Orlando, Florida. More about that later. […]

Tutorial: Near-Field Wireless Technology