Errifi, Hayat Hassan II University of Casablanca - Faculty of Sciences and Technologies of Mohammedia - EEA TI Laboratory, Morocco , Baghdad, Abdennaceur Hassan II University of Casablanca - Faculty of Sciences and Technologies of Mohammedia - EEA TI Laboratory, Morocco , Badri, Abdelmajid Hassan II University of Casablanca - Faculty of Sciences and Technologies of Mohammedia - EEA TI Laboratory, Morocco , Sahel, Aicha Hassan II University of Casablanca - Faculty of Sciences and Technologies of Mohammedia - EEA TI Laboratory, Morocco

DESIGN AND SIMULATION OF A PLANAR 4*4 BUTLER MATRIX IN MICROSTRIP TECHNOLOGY FOR X BAND APPLICATIONS

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This paper presents the optimum design of a 4x4 planar Butler matrix array as a key component of a switched beam smart antenna system operating at 10 GHz for X band applications, with a dielectric substrate RT-Duroid of εr =2.2 and thickness of 0.79mm. In 4x4 Butler matrix, four input ports are used for the input signal connections and four output ports can be connected to an array of four micro-strip patch antennas to form the beamforming network. Such a network is capable of production of four orthogonal uniform beams (at −45◦, −15◦, 15◦and 45°) with effective coverage over 100°, when feed with electromagnetic signals.Conception details, and simulation results are given for the components (hybrid coupler, crossover, phase shifter) used to implement the matrix.

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beamforming network , butler matrix , microstrip patch antenna array

Mediterranean Telecommunications Journal

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