I gave a talk on what I call the Schelkunoff-Smith Chart, Energy Flow, and Small Antennas at the Huntsville Hamfest yesterday. Here’s a link to the slides.
Near-Field
52 posts
Here’s a press release from Q-Track on my recent discovery and publication… Cross-posted at Ratburger. Hans Physicists have long been troubled by the paradoxes and contradictions of quantum mechanics. Yesterday, a possible step forward appeared in the Philosophical Transactions of the Royal Society A. In a paper, “Energy velocity and […]
A couple of weeks ago, I traveled to the UK to attend the Logistics Research Network Conference and present some talks. One, presented at the James Clerk Maxwell Institute and Newcastle University, explained my ideas on energy in reactive fields. The kind folks at Newcastle University have posted a video […]
I’m speaking at 9:45 this morning at the 21st LRN Annual Conference and PhD Workshop, sponsored by the Logistics Institute at the Wilberforce Building on the campus of the University of Hull. My topic is “Low Frequency Real-Time Location for Logistics and Other Applications.” My slides follow:
The Communications Research Group at the University of Hull graciously invited me to speak on the subject of “Near-Field Wireless Technology.” My hosts inform me that the seminar will start with refreshments, posters and informal discussion from 2.00pm with a 2.30pm start for the main seminar. We should finish about […]
This morning, I will present a talk, Energy Flow in Reactive Fields, at Newcastle University, hosted by the Newcastle Electromagnetics Interest Group. I’m scheduled for 11am to 1pm at The Buttery, Merz Court, School of Electrical and Electronic Engineering. Here’s the official flyer:Here are my slides: And here’s my abstract: […]
Today, I will be visiting the James Clerk Maxwell Foundation in Edinburgh. The foundation occupies the Edinburgh house on India street in which Maxwell was born in 1831. The foundation’s objectives are: To provide in the birthplace an attractive and stimulating environment for the mathematicians, scientists and engineers from all […]
One fun aspect of working in a new technology is the harder you work, the better performance gets. The performance of Q-Track’s Near-Field Electromagnetic Ranging indoor location systems just got even better. Bob DePierre and I started off in the ultrawideband (UWB) industry years ago – I designed antennas, and […]
This morning at 11:00 am, I will present a forum in the Embassy Suites Redstone Room at the 2016 Huntsville Hamfest. I will offer some answers to the question, “What is the Near Field?” This talk explains the near field, taking waves propagating along transmission lines as a starting point. […]
I’m honored and delighted to have been invited to Newcastle University by the Newcastle Electromagnetics Interest Group to speak on “Energy Flow in Reactive Fields,” Tuesday, 6 September, 2016 from 11am to 1pm at The Buttery, Merz Court, School of Electrical and Electronic Engineering. Here’s the official flyer: And here’s […]
Given a decent view of the sky, a GPS receiver can determine your latitude and longitude to a high degree of accuracy as good as a meter or so. But what if the latitude and longitude themselves are in error? That’s the problem faced by the continent of Australia. Every […]
The folks at Microwaves101 have been working with Bharath, a student in India, on an interactive Smith chart. They to add it permanently to Microwaves101. The temporary version is here: www.bbk005.net23.net/ Please take a look and post comments on what could be done to make this a more useful tool.
Implantable wireless devices that communicate by Bluetooth and deliver finely crafted electrical impulses to induce biological effects in human subjects? Cue the lightning and the maniacal laughter! It may sound like mad science, but it’s actually a cutting edge therapeutic technique with the potential to revolutionize medicine in novel ways. […]
My work explores the practical aspects of how bound, stored, or static electromagnetic energy transforms into moving electromagnetic energy. I’ve applied this expertise in the design of ultra-wideband (UWB) antennas, as well as in wireless systems that operate using near-field wireless principles. Q-Track designs indoor location systems that locate tags […]
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 […]
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 […]
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 […]
Here’s a video version of my May 23 talk at ATLOSCon in Atlanta Georgia on Fields Versus Action at a Distance. I subtitled my talk “How Electromagnetics Works,” because in retrospect, that would have made a better title. My talk discusses the conflict between action at a distance and field-based […]
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 […]
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 […]
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 […]
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 […]
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. […]
This afternoon I will be presenting an invited talk at the 2014 Texas Symposium on Wireless & Microwave Circuits & Systems at Baylor University in Waco, Texas. In my talk, Demystifying Electromagnetic Superposition (slides), I will examine the interesting behavior of electromagnetic waves when they superimpose or interfere with each […]