A Host Of Uses For Radar On A Chip

Radar may soon be in everything from cars to home toolboxes. Thomas McEwan, an engineer at Lawrence Livermore National Laboratory, has adapted radar-based sensors originally developed for Livermore's laser-fusion project. Chips send out electrical pulses as short as a 50-trillionth of a second. The sensor detects echoes from objects up to 200 feet away, noting any changes in position. The big breakthrough: The sensor and transmitter package costs $10 to make, compared with perhaps $40,000 for systems that perform the same functions, and it will eventually sit on one chip.

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