CST – Computer Simulation Technology

Title:
High Power Wide Band Wave Guide Butler Matrix
Author(s):
Jacob Remez, Roi Carmon
Source:
Technion, Institute of Technology, Electrical Engineering, Communication Laboratory, Haifa, Israel
Vol./Issue/Date:
1st January 0001
Year:
2005
Page(s):
4
Keywords:
Butler matrix, multibeam antenna, waveguide network, high power microwave, differential phase shifter, short slot hybrid
Abstract:
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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