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.

One great challenge in parenting is finding worthwhile educational videos. My kids prefer the zany antics of Phineas and Ferb to most anything with a wiff of being educational. That’s why I’m delighted to have found a great series that combines education with engaging entertainment for the whole family. How […]

How We Got to Now – Great Science for the Whole Family

Author and novelist, Robert Byrne collected his recent work in Behold My Shorts.
Robert Byrne, author of a number of outstanding novels featuring engineers as protagonists, is recovering from a stroke according to the Dubuque Telegraph-Herald. The 85-year-old author, humorist, and columnist was expected to be returning to Dubuque for rehabilitation this week. Better known for his works on Pool and Billiards, Byrne […]

Engineer-Novelist Stricken by Stroke

Napoleons Buttons
Napoleon’s Buttons is not a history of chemistry but rather the story of how chemistry influenced history. Seventeen chapters detail how chemicals have played a crucial role in human development from ancient times to the present. A sampling of topics include: Spices and their role in trade, Ascorbic acid, scurvy […]

Naploeon’s Buttons – How Chemistry Influenced History

Today I will present a Lunch-N-Learn seminar to the Central Indiana Section of the IEEE this Monday, September 21, at 11:00 am to 1:00 pm. His talk is hosted by Frost Brown Todd, LLC in downtown Indianapolis.  Register here. My talk, Energy Flow in Reactive Fields, proposes a novel definition […]

Energy Flow in Reactive Fields – How Electromagnetics Works

Noted antenna engineer, Alan Boswell of Great Baddow, Essex, UK, died August 5, 2015 at Broomfield Hospital. His funeral was on August 20 at Chelmsford Crematorium. Should you wish to make a charitable donation in his memory, two charities that were close to Alan’s heart are the British Lung Foundation […]

Sad News: Alan Boswell Died August 5, 2015

Two slit interference of waves.
The folks at Loughborough University in the UK have developed and released a fascinating educational application to illustrate the behavior of waves. The Loughborough Wave App offers an intuitive interface to allow the user to explore a variety of simple wave phenomena. This is not an analytic tool. Rather it’s […]

Loughborough Wave Lab App

One of the great pleasures of having written a book is hearing feedback from readers. I’m particularly interested in readers who have applied ultrawideband antenna ideas and concepts to solve problems with which I was completely unfamiliar. Martin Judd of High Frequency Diagnostics in Glasgow, Scotland has graciously agreed to […]

Kind Words and Interesting Problems

I will be presenting a Lunch-N-Learn seminar to the Joint Communications, Antennas & Propagation, and Microwave Theory and Techniques (JCAM) Chapter of the Huntsville Section of the IEEE this Wednesday, August 19, at 11:15 am to 12:45 pm. Lunch (Chicken Tenders) will be served, courtesy of our hosts at Technology […]

Energy Flow in Reactive Fields

ChopmistAdcock] 1
The Providence Journal has a fascinating piece on the little known story of domestic radio surveillance during WWII. The Intelligence Division of the FCC selected several sites in the U.S. to set up monitoring stations to listen for enemy spies. A wartime short movie featured the radio surveillance effort. The […]

Monitoring Rommel’s Afrika Corps from Rhode Island

Noted antenna expert, Alan Boswell, was kind enough to share his thoughts on the second (revised) edition of The Art and Science of UWB Antennas. His review follows… The first thing to say to someone familiar with antennas who picks up this book is that its subject matter is not […]

Alan Boswell Reviews The Art and Science of UWB Antennas

SafeSpot protects workers by warning of potential accidents before they happen.
SafeSpot™ systems make busy workplaces safer by warning pedestrians and forklift drivers of potential collisions. The system triggers a warning around blind corners if a forklift-forklift or forklift-pedestrian collision is imminent. Q-Track’s innovative system employs near-field electromagnetic ranging to detect proximity of forklifts and passive IR to detect pedestrians. Workers […]

Innovative Forklift Safety Product Now Available

UWB Book Slider
Professor Steve Holland of the Milwaukee School of Engineering is an expert on UWB antennas and broadband matching. He reviewed Chapter 4 of my book as I was writing it, and he provided me with helpful feedback and insights on matching UWB antennas. His conference paper “Wideband Impedance Matching Techniques” […]

Another Great Review for The Art and Science of UWB Antennas

Can a preface itself have a preface? At the risk of being hopelessly self-referential, I suppose that’s how one might characterize this post. The preface to the second edition of The Art and Science of UWB Antennas follows. By way of introduction, the preface was actually the last part of […]

Preface to The Second Edition of The Art and Science of UWB ...

Bookplate to be included with every signed copy of The Art and Science of UWB Antennas.
Every signed copy of The Art and Science of UWB Antennas will come with a complimentary bookplate. Designed by Patricia Forrest and inspired by a classic design from 1950s science fiction illustrator Ed Emshwiller, the bookplate features equations and graphics from the text. Design elements include: Impulses combining destructive on […]

Unveiling the Art and Science of UWB Antennas Bookplate

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

The Robert Allerton Retreat
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