Study of Polarization Strategy for High-Power Millimeter Wave With Two Identical Reflective Gratings

摘要

For high-power millimeter systems, reflective gratings (RGs) are usually used to control the wave polarization. This paper presents the polarization strategy with two identical RGs. We use the coordinate transformation method for the RG design. A code based on this method is checked by numerical examples and also low-power experiments. Experiments are carried out at frequencies of 60, 70, and 105 GHz. Four gratings are manufactured for test. We present and compare calculated results of the coordinate transformation method with the numerical results of the integral method and low-power test results. The comparison results indicate that the calculation results of the code are accurate and reliable. Finally, the polarization strategy with two identical RGs is studied with the code. Parameters and polarization characteristics including the bandwidth of designed gratings are given.