I’m pleased to announced a special offer for ÆtherCzar readers and fans, courtesy of my publishers at Artech House.The Art and Science of Ultrawideband Antennas is now available at a 25% discount direct from the publisher: For my US readers: $103 discounted from the regular $139 price For my UK readers: […]
UWB
45 posts
This morning brings news that 5D Robotics of Carlsbad, California has acquired Huntsville-Alabama based ultrawideband (UWB) pioneer, Time Domain Corporation. Time Domain President, Rachel Reinhardt, writes: 5D has been a long-standing customer of Time Domain. We have worked closely and developed a cultural affinity and mutual respect for one another […]
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 […]
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 […]
I’ve started a page to host corrections to the second edition of The Art and Science of UWB Antennas. There are only two so far, but I’m confident a careful reader will have no trouble adding to the list. The first discoverer of an error will receive the fame of […]
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” […]
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 […]
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 […]
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 […]
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.
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 […]
[iframe:src=”http://rcm.amazon.com/e/cm?lt1=_blank&bc1=000000&IS2=1&bg1=FFFFFF&fc1=000000&lc1=0000FF&t=uwbantennacom-20&o=1&p=8&l=as4&m=amazon&f=ifr&ref=ss_til&asins=B0068URL6M” frameborder=”0″ width=”120px” height=”240px” scrolling=”no”] Next-RF’s Model 310C UWB Planar Horn Antenna is now available from Amazon. This ultra-wideband (UWB) antenna approximates a constant aperture. Thus, the time domain voltage signal closely approximates the time domain behavior of the incident fields themselves. In addition to use as a UWB impulse […]
DecaWave has joined the ranks of companies offering UWB-based real-time locating systems. Here’s a video showing a demonstration of their system. DecaWave RTLS and ranging demo – YouTube.
Time Domain has released a compact (3″ x 4″) UWB radar module with 1.4GHz bandwidth at a 4.3GHz center frequency. From their website: Time Domain’s PulsON® 400 (P400) Monostatic Radar Module (MRM) is a fully coherent, short-range radar that packs 1.4 GHz of RF bandwidth in a small, low cost, […]
The story seems an improbable fiction: a famous Hollywood actress invents a secret technology so far ahead of its time that it takes decades for the full potential of her idea to be recognized. Yet in 1941, actress Hedy Lamarr, collaborating with pianist George Anthiel, invented frequency-hopping, spread-spectrum technology. The […]
This just in from Information Week (via Dwayne Hendricks, WA8DZP on Twitter): Ultrawideband Takes Us Closer To Star Trek Tricorders. Is it a miraculous UWB radar that monitors your heart rate, blood pressure, and cholesterol? Alas, no. It’s a UWB body area network. Ultra-wideband works great when you have lots […]
“Standard” gain horns are the customary way to make precision measurements, but they tend to make a poor reference against which to compare antenna performance, particularly for ultra-wideband (UWB) antennas. The ideal reference antenna for use with UWB systems is a linear phase antenna with increasing gain to approximate an […]
The Time Domain Corporation has sold its ultra-wideband (UWB) real-time locating systems (RTLS) business unit to a newly-formed, privately-held company: PLUS Location Systems. Here’s the full press release: Huntsville, Alabama (March 31, 2011) – Time Domain, a leader in ultra wideband (UWB) product development, announced that it has sold its […]
Steven J. Crowley once again has an update on Experimental License Applications before the FCC. A couple of highlights include: ZAI filed an application with exhibit for special temporary authority to test an ultra-wideband (UWB) vehicle-mounted radar system for identifying roadside threats and obstacles. The hardware is manufactured by Time […]
Here are some RTLS news items of interest: Chinese plans to track cell phones raise concerns: Beijing to track people’s movements via their mobile phones – Computerworld. Hat Tip: @TheSchnack Skyhook brings location-awareness to the Sony NGP, including WiFi-only models — Engadget. Computer scientists develop smart, less obtrusive tracking system […]
I’m participating in a panel discussion: “Ultra-Wideband(UWB) Technology: Past, Present, and Future” at the 2011 IEEE Radio and Wireless Symposium today, Wednesday January 19 at 11:50 – 13:00 in room Solana ABCD. Organized by Dr. Faranak Nekoogar (author of Ultra-Wideband Communications: Fundamentals and Applications), my fellow panelists are slated to […]
I’ll be presenting a paper, “On the Origins of RF-Based Location,” at the 2011 IEEE Radio and Wireless Symposium this morning at 8:00 in room Cira A. The paper collects together the pre-WWII material I’ve blogged about under the History of RF-Based Location category here at ÆtherCzar. This paper will provide […]
The 2011 IEEE Radio and Wireless Symposium kicks off today in Phoenix, Arizona. ÆtherCzar will be live-blogging the proceedings. If you are in attendance, I look forward to seeing you around the conference and particularly at my three formal appearances (all on Wednesday): Paper Presentation: “On the Origins of RF-Based […]
Armig Kandoian received U.S. Patent 2,368,663 for his invention of the discone antenna in 1945. The basic idea behind a discone antenna is to drive a circular disk against a conical ground. Kandoian was motivated by the problem of trying to mount antennas to aircraft. In alternate embodiments, Kandoian showed […]