High Power Wide Band Wave Guide Butler Matrix
Jacob Remez, Roi Carmon
Technion, Institute of Technology, Electrical Engineering, Communication Laboratory, Haifa, Israel
1st January 0001
Butler matrix, multibeam antenna, waveguide network, high power microwave, differential phase shifter, short slot hybrid
The Butler matrix is a beam forming matrix that is used for electronically scanning of array antennas. High Power applications require the Butler matrix to be implemented from a waveguide construction for its advantage as a very low loss network.
We report a design of wideband waveguide components that compose the Butler matrix, hybrid 3dB and differential phase shifters, and a network assembly with almost ideal performance over a wider bandwidth than previous published for waveguide Butler matrices.
The waveguide components that compose the matrix are bandwidth limited and their joint assembly to a corporate network farther decreases the bandwidth due to their mutual inter reflections. We report a network shape that yields the best results of a wideband waveguide Butler matrix.
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