Everything is wireless these days, right? Or perhaps it just seems that way. MIMO (multiple-input and multiple-output) radios seem to be the most popular of the bunch. MIMO means that multiple antennas are used for both the transmit and receive ends of the signal in the wireless subsystem. The result, in theory at least, is improved performance, including higher data throughput and range without requiring a higher transmit power or additional bandwidth. Rather, the signal is spread between the antennas. Some people refer to MIMO as smart antenna technology.
I’ve been using a MIMO wireless router for many years for the WiFi in my home office. There’s no question that its performance is superior to single-antenna systems. If you’re designing some sort of system that requires wireless, whether it’s WiFi or some other technology, MIMO should be on your list of considerations, and probably pretty high up on that list.
Once you get the MIMO architecture designed in, you’ll need to test that subsystem. Unfortunately, this has been a fairly significant challenge for designers, even those who are familiar with wireless technology. While it might seem trivial (or maybe it doesn’t), there’s a specific process to follow to test properly.
To help you get from Point A to Point B, we’ve assembled a series of classes in our Digi-Key Continuing Education Center called Testing MIMO Radios. While taking these online classes won’t make you an expert, it’ll get you much further down the road in your wireless development. And you’ll be earning IEEE Professional Development Hours at the same time.
Science fiction author Isaac Asimov may have the best rules for effective brainstorming and creativity. His never-before-published essay, "On Creativity," recently made it to the Web pages of MIT Technology Review.
Much has been made over the potentially dangerous flammability of lithium-ion batteries after major companies like Boeing, Sony, and Tesla have grappled with well-publicized battery fires. Researchers at Stanford University may have come up with a solution to this problem with a smart sensor for lithium-ion batteries that provides a warning if the battery is about to overheat or catch fire.
In this new Design News feature, "How it Works," we’re starting off by examining the inner workings of the electronic cigarette. While e-cigarettes seemed like a gimmick just two or three years ago, they’re catching fire -- so to speak. Sales topped $1 billion last year and are set to hit $10 billion by 2017. Cigarette companies are fighting back by buying up e-cigarette manufacturers.
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.