Circuit for generating rf signals for electronically scanned antennas and in particular for tacan systems, and phase shifter suitable for the same

Abstract From the Canadian patent

A circuit is provided for generating RF signals for electronically scanned antennas and in particular for TACAN systems, and a phase shifter particularly suitable for such circuit. Instead of using circuits based on big Butler-matrices, as in the prior art, a small Butler-matrix is used for combining a limited number of outputs of a power divider and, by combining further the remaining outputs of the power divider and the few outputs of the Butler-matrix through the use of electromagnetic combiners a plurality of, RF signals suitable for electronically scanned antennas are obtained with a remarkable accuracy and a comparatively simple circuity. 16