Evaluation of the Effect of Phase Errors on the Performance of a Butler Matrix
نویسندگان
چکیده
Introduction. The Butler matrix transforms the N channels of a phased array into a new set of so-called eigenmodes with useful properties for both reception [1] and transmission [2]. In the current work, we performed simulations of an eight-channel phased array based on microstrip transmission line (MTL) elements [3-4] and driven in an eigenmode configuration to investigate the effects of errors of individual components of the Butler matrix on the obtained electromagnetic fields. Results of the calculations were compared to experimental data recorded at 3 T.
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