Welcome to my blog, ÆtherCzar. I share the occasional post as a way to promote talks and discuss what I’m up to in a lengthier format than that available on Twitter or Facebook. Often I just aim to relax, unwind, and opine about whatever happens to strike my fancy. The topics frequently revolve around my interest in antennas and electromagnetics, but you’ll also see posts about history, politics, books, science fiction, and other areas of science and technology. There’s lots to do and see here:

Here are a sampling of my most popular posts.

On Science Fiction, Books, and Writing:

On Wireless and Electronic Technology Including Real-Time Location Systems (RTLS) and Radio-Frequency Identification (RFID):

On Physics, Electromagnetics, and Antennas:

Your host.
Hans G. Schantz

Who Am I? About Hans G. Schantz

I’m an RF scientist with a Ph.D. in theoretical physics. My research aims at understanding how it is that bound or reactive electromagnetic energy decouples from a source or an antenna and radiates away.  This theory has been helpful in understanding and designing not only antennas, but also near-field wireless systems. I “wrote the book” on The Art and Science of Ultra-wideband Antennas. And I’m an inventor with about forty patents to my credit – mostly antennas or wireless systems, but I was also a co-inventor (with my wife) on a baby bowl. With Bob DePierre, I co-invented Near-Field Electromagnetic Ranging.  I conceived the idea and Bob reduced it to practice and made it work.

Where Do I Work? About Q-Track

Q-TrackLogoMediumI’m also an entrepreneur. I co-founded The Q-Track Corporation along with some partners, including Bob DePierre and Jerry Gabig. The Q-Track Corporation is the pioneer in Near-Field Electromagnetic Ranging (NFER®) Real-Time Location Systems (RTLS). Q-Track released the first NFER® RTLS a few years ago. Q-Track products provide precise (40cm rms accurate) location awareness that enhances the safety of nuclear workers. In other installations, Q-Track products let robotic overhead cranes know the location of workers so as to avoid collisions. NFER® RTLS provides “indoor GPS” by providing location awareness to the most difficult industrial settings. Here are some recent articles about Q-Track, if you’d like to learn more:

Conventional RTLS vendors take wireless hardware optimized for high-data-rate communications applications and try to apply it to the challenging problem of indoor wireless location. This is true not only of ultra-wideband (UWB) RTLS vendors, but also of RTLS vendors who leverage WiFi, or other 2.4GHz technologies. The bottom line: communications and location are two different applications requiring fundamentally different solutions. Solving the problem of reliable, robust, and inexpensive indoor wireless location means unlocking the indoor GPS market – a commercial opportunity we believe could ultimately be comparable in size to the multi-billion dollar outdoor GPS market.

Q-Track’s founders are veterans of the ultra-wideband (UWB) industry. Having seen first-hand the problems of multipath and blockage that limit the performance of UWB RTLS, we designed NFER® RTLS from the ground up with a physical layer optimized for location, instead of communication. NFER® systems operate at low frequencies (typically around 1MHz) and long wavelengths (typically around 300m). NFER® RTLS operates within about a quarter-wavelength of a transmitter, in the vicinity of the transition point between the near-field and the far-field zones.

It should go without saying (but I’ll say it anyway) that the opinions expressed here are mine and are not necessarily those of Q-Track, or its management, shareholders, customers, or partners.

My Family

In addition, I’m a husband and father of two sets of twins: girls age eleven and boys age eight. Somehow my stay-at-home wife manages to look after us all and run her own company – Baby Dipper, LLC. She invented (with a small contribution from me) a very clever infant feeding set including the Baby Dipper® bowl. The clever ergonomic design of the Baby Dipper® bowl and spoon feeding set has proven successful for parents feeding babies and for toddlers learning to feed themselves. Recently, the Baby Dipper® bowl has proven effective in helping mobility impaired and developmentally delayed children learn to eat.


This blog is an Amazon affiliate. You can help support ÆtherCzar and defray the cost of maintaining this blog by purchasing recommended books or other items. ÆtherCzar receives a modest referral fee on your purchase. No reviews or recommendations are posted at ÆtherCzar in exchange for monetary or other compensation (including free review copies) unless otherwise indicated.


Welcome to my website. I hope you find what I have to say interesting, informative, and occasionally perhaps even thought provoking. Feel free to leave a comment or question below. Or you may send an e-mail to “h.schantz” at the “ieee.org” domain.