Computational through-wall imaging using a dynamic metasurface antenna

Metasurface optics for full-color computational imaging

Conventional imaging systems comprise large and expensive optical components that successively mitigate aberrations. Metasurface optics offers a route to miniaturize imaging systems by replacing bulky components with flat and compact implementations. The diffractive nature of these devices, however, induces severe chromatic aberrations, and current multiwavelength and narrowband achromatic meta...

Wideband Printed Antenna Elements for Through- Wall Microwave Imaging Applications

In this paper, the probefed stacked patch antenna and the E-shaped patch with a parasitically coupled selfcomplementary element (ESCE) are designed and analyzed in wall proximity in order to study the effects of various wall parameters on the antenna’s radiation characteristics. In particular, the effect of different wall-antenna separations as well as different wall material properties on impe...

Single-pixel computational ghost imaging with helicity-dependent metasurface hologram

Different optical imaging techniques are based on different characteristics of light. By controlling the abrupt phase discontinuities with different polarized incident light, a metasurface can host a phase-only and helicity-dependent hologram. In contrast, ghost imaging (GI) is an indirect imaging modality to retrieve the object information from the correlation of the light intensity fluctuatio...

Through the Wall Radar Simulations Using Polarimetric Antenna Patterns

Reconfigurable MIMO Antenna Design with High Isolation using Metasurface

In this paper, a frequency reconfigurable multiple-input-multiple-output (MIMO) antenna has been described. The idea of the design is to form reconfigurable MIMO antenna by the development of two-port antenna that are identical to each other and pin diodes are used to achieve the frequency reconfigurability. The design of the canonical element consists of compact folded slots with one pin diode...