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A prototype reflectarray faces a feed horn in an anechoic chamber.
communications
A low-cost, reconfigurable radio receiver architecture provides an alternative approach to filter out unwanted transmissions in millimeter-wave (MMW) signals.
a small electronic chip is illuminated with red laser light.
quantum
Optical atomic clocks are the most accurate in the world, but they are very large, sensitive instruments. We are transforming the complex components of these clocks into a compact, portable platform.
Researchers test the prototype standoff microwave imaging system. The antennas emit radio signals that reflect off the person standing in front of the array; the system processes the reflections to create the image on the monitors in the background.
advanced imaging
The system can rapidly and discreetly detect threat items concealed under clothes or hidden in bags of people in crowded public spaces.

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