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We investigate the use of a dynamic metasurface as the transmitting antenna for a synthetic aperture radar (SAR) imaging system. The dynamic metasurface consists of a 1-D microstrip waveguide with complementary electric resonator (cELC) elements patterned into the upper conductor. Integrated into each of the cELCs are two diodes that can be used to shift each cELC resonance out of band with an applied...
A novel computational technique is presented in this article for enabling the estimation of both the localization of radiating sources and their polarization states. To this end, a radiating metasurface is conceived to multiplex the polarization information received by the its aperture into a single frequency domain signal, allowing for a massive simplification of the architectures conventionally...
A near-field radar imaging technique is presented based on single-frequency measurements from a multiple-input multiple-output (MIMO) array. Such arrays are able to fully sample the κ-space of a region of interest. Advantageously, both range and cross-range information can be reconstructed, in contrast to conventional single-input multiple-output systems which require wideband frequency illumination...
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