David R. Smith

TL;DR: Preliminary modelling results using ray-tracing analysis shows that the desired low angle coverage can be achieved, and full 3D electromagnetic simulations indicates that using an ideal tilted element with novel louvered reflector in addition with proposed lens, low angular coverage can potentially be realised in a low profile structure.

TL;DR: In this paper, an experimental modal test was performed on the Gemini Optical Telescope along with collection of operating data to evaluate the effect of wind loading on the structure of the telescope.

TL;DR: In this paper, the authors presented a numerical study of metamaterials integrated with gain media to achieve composite metammaterials at terahertz and infrared wavelength with reduced losses.

TL;DR: This paper summarizes the recent advances in using frequency-diverse metasurfaces for computational imaging in the microwave and millimeter wave regimes and discusses efforts to build large apertures, which can image at the diffraction limit.

TL;DR: In this article, a sub-Nyquist holographic aperture is configured to define selectable arbitrary complex radiofrequency electromagnetic fields on a surface of the antenna and an optimization circuit selects responsive to the model of the environment a power transmission regime.