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Radios Get Smart

But can they be trusted to roam the spectrum and not interfere with existing users?

13 min read
Radios Get Smart
Illustration: John Hersey

Guglielmo Marconi’s first radio broadcast was a point-to-point affair, a transmission from England to one person in Nova Scotia. It was the radio equivalent of flying an airline’s passengers across the Atlantic one at a time. Today, we pack radio waves into the air as tightly as economy seats on a 747.

We need to. New radio technologies keep coming along—Wi-Fi, WiMax, Bluetooth, ZigBee, the growing panoply of cellular voice and digital services, broadcast satellite, and more. Each requires unique hardware appropriate to its special way of sending and receiving radio waves. To minimize interference, each is restricted to specific bands of the spectrum and is limited in the way it divides that spectrum into channels and in the encoding and modulation schemes it can use. If we tried to impose this sort of regime on road transportation, we might wind up with a system in which buses, cars, and trucks were each restricted to their own separate roadways.

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Vanadium Anodes for Faster-charging, Longer-lived Batteries

Startup TyFast aims for 3-minute charging, 20,000-cycle life

3 min read
A foil rectangle labelled Tyfast, with two silver squares coming out of the top.

Startup Tyfast is making batteries based on a new anode material that allow it to charge in minutes and last for several thousands of charge cycles

Tyfast

To fulfill the vision of EVs that travel a thousand miles or phones that run for days on a single charge, most battery developers are racing to make batteries that can pack twice the energy in the same weight.

Not startup Tyfast, which is “approaching next-generation battery development in a counter-current direction,” says GJ la O’, CEO and cofounder of the 2021 spinoff from the University of California, San Diego.

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IEEE STEM Activity Kits Are In Demand at 150 U.S. Public Libraries

Kids can build robots, write code, and design video games

4 min read
Two boys and one girl standing in front of a computer monitor. On the left side of the monitor is a backpack containing a science activity kit.

These youngsters are checking out one of their local library’s IEEE-funded science activity kits.

John Zulaski

More than 150 public libraries throughout the central United States now lend out activity kits that let children explore just about any aspect of science, technology, engineering, and mathematics. The kids can check them out just like they would a book. The kits teach youngsters what engineers do, as well as how to code, build robots, design video games, and create animations.

The collections have been made possible by the IEEE Region 4 Science Kits for Public Libraries program with funding from Region 4 members and corporate sponsors. The SKPL program is the brainchild of IEEE Life Senior Member John A. Zulaski, the chair of the SKPL committee.

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Free On-Demand Webinars on Data Acquisition Boards and Their Applications

Explore the basics of digitizers, pulse detection, peer-to-peer streaming, and more

1 min read

Dive into the world of digitizers and explore how they can benefit your application. Explore the basics of digitizers, pulse detection, peer-to-peer streaming, and more. Whether you are a scientist, engineer, student or if you want to know more about Teledyne SP Devices deep knowledge base there is something for everyone. Register now for these free webinars!