Circuit for generating rf signals for electronically scanned...

Details Circuit for generating rf signals for electronically scanned... Circuit for generating rf signals for electronically scanned...

G - Physics

01

S

G01S 1/06 (2006.01) G01S 1/08 (2006.01) G01S 1/48 (2006.01) H01Q 3/36 (2006.01) H01Q 3/40 (2006.01)

Patent

CA 2095510

CIRCUIT FOR GENERATING RF SIGNALS FOR ELECTRONICALLY SCANNED ANTENNAS AND IN PARTICULAR FOR TACAN SYSTEMS, AND PHASE SHIFTER SUITABLE FOR THE SAME ABSTRACT 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

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