A Diagram-Forming Scheme Implemented According to the Butler Matrix Scheme

The work is aimed at describing a compact Butler matrix that allows forming independent rays in a radiation pattern. Such a matrix is a set of directional couplers, phase shifters and crossovers. These devices are connected to the frequency at which they operate, so at low frequencies they will take up a lot of space on the printed circuit board. In our work, we studied the option of replacing microstrip segments with structures with equivalent characteristics. Such manipulations with the Butler matrix allowed to reduce its area by 80% in relation to the standard design.