Wideband Multilayer 45-Degree Polarizer (2 - 6GHz)

In this paper a wideband multilayer 45-Degree polarizer design is described in detail. The design consists of five layers of strip-lines oriented progressively from 0⁰ to 45⁰. A semi-analytical method, developed in a previous work is used to optimize the structure over the bandwidth 2 to 6 GHz. To validate the approach, patch antennas resonating at different frequencies are stacked with the polarizer. The results of the full structures are discussed over the complete bandwidth.