Friday 29th of March 2024
 

Application of Butler Matrix to a Tree Structure of Microstrip Antenna Array



The aim of this investigation is to realize a Butler matrix for a multibeam base station antenna dedicated to a UMTS application; this matrix has been realized with microstrip technology. The antenna associated with this application is a network of patches distributed in a tree structure and fed by electromagnetic coupling. The patch distribution structure used in this experiment allowed a great improvement of gain, directivity as well as the adaptation level of the studied array. The following work was done between the signals, systems and components laboratory of FST-Fez and the microwave laboratory of the National Institute of Posts and Telecommunications.

Keywords: Butler Matrix, Adaptive Antenna, Microstrip Antenna array, Multibeams Antenna, Coupler

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