Metamaterial-based object-detection system

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United States of America Patent

PATENT NO 9545923
APP PUB NO 20160011307A1
SERIAL NO

14331024

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Abstract

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An object-detection system for, e.g., a vehicle collision avoidance system, utilizes a metamaterial-based phase shifting element array to generate a scan beam by varying the effective capacitance of each metamaterial structure forming the array in order to control the phases of their radio frequency output signals such that the combined electromagnetic wave generated by the output signals is reinforced in the desired direction and suppressed in undesired directions to produce the scan beam. The metamaterial structures are configured to resonate at the same radio wave frequency as an incident input signal (radiation), whereby each metamaterial structure emits an associated output signal by way of controlled scattering the input signal. A variable capacitance is applied on each metamaterial structure, e.g., using varicaps that are adjusted by way of phase control voltages, to produce the desired output phase patterns. The metamaterial structures are constructed using inexpensive metal film or PCB fabrication technology.

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Patent Owner(s)

  • PALO ALTO RESEARCH CENTER INCORPORATED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Casse, Bernard D Saratoga, US 42 564
Liu, Victor Palo Alto, US 40 680
Tuganov, Alexander S Redwood City, US 4 79
Volkel, Armin R Mountain View, US 114 1932

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