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We demonstrate a frequency-diverse imaging system using an air-filled cavity-backed antenna as a transceiver (cavity-to-cavity system layout) for the K-band (17.5–26.5 GHz) frequency regime. Leveraging the computational imaging concept, the frequency-diversity enables imaging in an all-electronic manner, without the need for mechanical raster scanning or active circuit components, minimizing the data...
In this paper, we propose a metallized 3D printed cavity for K-band imaging and investigate the effect of metallization type on mode diversity and image reconstruction. The 3D printed cavity acts as a frequency-diverse aperture and is capable of imaging objects in an all-electronic manner utilizing computational imaging techniques. We demonstrate that metallization material choice can increase the...
We consider multi-static imaging systems composed of frequency-diverse transmitting antenna arrays (or apertures). In these frequency diverse imaging modalities, accurate near-field characterization of the antennas is vital to achieving imaging. It is shown that considerable simplification in system characterization can be achieved without compromising the image quality when planar cavity antennas...
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