Like the signals it emits, the radio may soon disappear from sight.
University of Florida electrical engineers have installed a radio antenna less than one-tenth of an inch long on a computer chip and demonstrated that it can send and receive signals across a room. The achievement is another step in the teams continuing efforts to build an "ultrasmall radio chip" – a transceiver, processor and battery all placed on a chip not much larger than a pinhead – and one that could one day be used for applications ranging from detecting illegal border crossing to ensuring bridge and tunnel safety.
"This project is about building very small radios that are very hard to detect, both electrically and physically," said Ken O, a UF professor of electrical and computer engineering and one of six authors of an article reported in last months edition of Electrical and Electronics Engineering Electron Device Letters. "Since the antenna is usually the biggest part of the radio, this is a significant step."
Kenneth O | EurekAlert!
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