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A Novel Fully Electronic Active Real-Time Imager Based on a Planar Multistatic Sparse Array

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3 Author(s)
Ahmed, S.S. ; Rohde & Schwarz GmbH & Co. KG, Munich, Germany ; Schiessl, A. ; Schmidt, L.

The interest in active millimeter-wave and microwave imaging systems is increasing due to their utilization in security, medical, and industrial applications. Imaging systems using monostatic arrays suffer from the high number of antenna positions, making a fully electronic solution very costly and impractical. Multistatic arrays, however, offer the chance for high reduction factors in the number of antennas, and then allow for fully electronic solutions. Here, a new array architecture is presented, which is suitable for real-time operation and is capable of delivering high image quality in means of resolution and dynamic range. Various technological solutions were developed for the imaging purpose, which are introduced in detail. An example array for operation from 72 to 80 GHz is demonstrated. The imaging system hardware is introduced, along with several imaging results of humans with concealed objects.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:59 ,  Issue: 12 )