Passive and active reconfigurable scan-beam hollow patch reflectarray antennas

The design concept of passive and active reconfigurable reflectarray antennas has been proposed and tested. The antenna elements in the array are identical hollowed patches. In the first phase of study the slots are loaded with a SMD capacitor to set the required phase shift needed for array implementation. Simulations show promising results....

Passive and active reconfigurable microstrip reflectarray antennas

Novel solutions for conceiving microstrip reflectarray antennas (MRA) using various types of patches are presented in this PhD thesis. The approach is based on the integration of a varactor diode active device into elementary hollow patch radiators. In the first part of the thesis, a new concept for the realization of a reflectarray based on...

Branch correlation measurements and analysis in an indoor Rayleigh fading channel for polarization diversity using a dual polarized patch antenna

Electromagnetic analysis of beam-scanning antenna at millimeter-wave band based on photoconductivity using Fresnel-zone-plate technique

Design of a wideband miniature dielectric-filled waveguide antenna for collision-avoidance radar

Antenna time-domain measurement techniques