5x7 Nolen Matrix in K-Band Implemented in Rectangular Waveguide

In this work, the design of a 5x7 Nolen Matrix (NM) at 26 GHz with a rectangular waveguide is presented. At first, the array weights are chosen in order to achieve the desired beams. Using these weights, and ordering them optimally, a theoretical calculation of the NM coupling coefficients and phase shifter values is done. The size of the rectangular waveguide is chosen with the goal of reducing loss and dispersion effects. Couplers and phase shifters are designed with such a rectangular waveguide in a plane-E orientation. Matching networks at the input and output waveguides are also designed to permit connecting the standard rectangular waveguide WR34 at inputs and to connect the outputs to the array elements. A full electromagnetic simulation of the designed MN has been carried out, with promising results.