RF News

This is the digital age. From flashy cell phones, games, PCs, and PDAs to the behind-the-scenes automotive, medical, and Internet components, progress in digital computing owes much to the software that helps designers create and connect millions of transistors. But with the trend toward mixed-signal chips in a communications-centric world, everyone is finding the need […]

Invention and Inventors: In Paris, shortly after World War II, two German scientists, Herbert Mataré (above) and Heinrich Welker, invented the “tran- sistron,” a solid-state amplifier remark- ably similar to the transistor developed by Bell Telephone Laboratories at about the same time. In this X-ray image of a commercial transistron built in the early 1950s,

Gilded skin: Takao Someya’s latest e-skin material is one-tenth the thickness of plastic kitchen wrap, and it can conform to any body shape. Photo: Someya-Sekitani Group A golden glove: In 2003, Someya’s lab used organic thin-film transistors to create its first flexible, bendable e-skin. Researchers wrapped the material around a mechanical hand to demonstrate the

Part one of a two-part report Photo: Zoriah Two platoons of U.S. Army scouts are in a field deep in the notorious “Triangle of Death” south of Baghdad, a region of countless clashes between Sunni insurgents and Shia militias. The platoons are guided by a local man who’s warned them of pressure-plate improvised explosive devices,

Has the computer become a black box, even to experienced electrical engineers? Will we be forever reliant upon large, opaque organizations to build them for us? Absolutely not, we say. And to prove our point, we built our very own laptop, from the circuit boards on up. Admittedly, we did not delude ourselves that we

Can you imagine keeping the same cell phone as you switch from one service provider to another to take advantage of deals and new phone service options? A new technology called software-defined radio could make that possible–of course, assuming that service providers choose to adopt it. As any reader of the business pages knows, the

Keeping aging systems on their feet is a daunting and resource-intensive task. The U.S. Air Force, for example, continually wages an internal battle to keep its weapons systems in fighting form. One enormous and often overlooked factor contributing to the early demise of military technologies is the problem of unavailable parts. Take the B-2 Spirit,

This is part of IEEE Spectrum’s Special Report: 25 Microchips That Shook the World.Contents0.1 This is part of IEEE Spectrum’s Special Report: 25 Microchips That Shook the World.1 Gordon Moore2 Vinod Khosla3 Carver Mead4 Steve Jurvetson5 Sophie Vandebroek6 Morris Chang7 David Ditzel8 Jeff Hawkins9 Lee Felsenstein10 Frederick P. Brooks, Jr.11 Allen Baum12 Nick Tredennick13 Robert

Put on your virtual-reality headset and be transported to a distant planet, ducking the crossfire in a battle between alien species. Laser rifle shots whiz by your head; military shuttles hover before you; the frantic calls of comrades hail from all directions. Change the channel. Now you are courtside at a basketball game. You hear

Despite this initial dominance, by 1986 the IBM PC was becoming an also-ran. And in 2005, the Chinese computer maker Lenovo Group purchased IBM’s PC business. What occurred between IBM’s wildly successful entry into the personal computer business and its inglorious exit nearly a quarter century later? From IBM’s perspective, a new and vast market