Electromagnetic scattering from skew-symmetric metallic grids

The problem of electromagnetic scattering from skew-symmetric grids is examined. The undesirable effects that result from such structures include transmission loss, resistive loss, and cross-polarization loss. In mesh deployable antennas, the mesh wires are weaved together, forming a very complex structure. This makes the geometry of the resultant structure very difficult to study and analyze from the electromagnetic point of view. For this reason, the skew-symmetric geometric is chosen to approximate the weaved structure, instead of using a simple rectangular grid. The FFT conjugate gradient method is used to solve for the induced currents on the conducting strips of the grid. A certain unit cell is defined and used to represent the aperture region and conducting parts of the grid. The reflection coefficient is for a TE (transverse electric) polarization case for three different angles of skewness, 135 degrees , 125 degrees C, and 105 degrees .<>