Many modern satellite and terrestrial point-to-point communications systems use circular
polarization (CP) wave propagation in order to maximize the polarization efficiency component …

Numerical simulations are used to study the electromagnetic scattering from phase agile
microstrip reflectarray cells which exploit the voltage controlled dielectric anisotropy property of …

The design, fabrication, and measured results are presented for a reconligurable reflectarray
antenna based on liquid crystals (LCs) which operates above 100 GHz. The antenna has …

Anisotropic impedance surfaces are employed as low-profile and broadband reflectors that
convert orthogonal linear to right- and left-handed circular polarization respectively. By virtue …

A frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals
to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is …

A reconfigurable reflectarray which exploits the dielectric anisotropy of liquid crystals (LC)
has been designed to operate in the frequency range from 96 to 104 GHz. The unit cells are …

The purpose of this paper is to review recent developments in the design and fabrication of
Frequency Selective Surfaces (FSS) which operate above 300 GHz. These structures act as …

The design, construction and measured performance is described of an offset parabolic
reflector antenna which employs a reflectarray subreflector to tilt the focused beam from the …

A printed reflectarray antenna, which generates a beam that can be electronically switched
from a sum to a difference radiation pattern, is presented. This is achieved by applying a bias …

A new design method that greatly enhances the reflectivity bandwidth and angular stability
beyond what is possible with a simple Salisbury screen is described. The performance …