HREE-BEAM BUTLER MATRIX BASED ON DOUBLE-STUB DIRECTIONAL COUPLER AT 1.5-1.75 GHz FREQUENCY RANGE
This paper describes the design of a three-beam Butler matrix operated at 1.5-1.75 GHz frequency range. Presented design provides the formation of three orthogonal beams of a linear antenna array at the expense of the stability of electrical characteristics. The simulation results are confirmed by experimental data