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https://doi.org/10.1109/MWSYM.1990.99677

has been cited by the following article:

• TITLE: Analysis and Design of Different Methods to Reach Optimum Power in Butler Matrix

  AUTHORS: Shahideh Kiehbadroudinezhad, Jean-François Bousquet, Michael Cada, Adib Shahabi, Mohammad Ali Kiehbadroudinezhad

  KEYWORDS: Butler Matrix, Beam Forming, Phase Shifter, Micro Strip

  JOURNAL NAME: International Journal of Communications, Network and System Sciences, Vol.12 No.2, February 28, 2019

  ABSTRACT: With the increasing demand for high speed reliable communications, smart antennas, such as the Butler Matrix array, can be used to develop a system that increases the performance of a wireless system. The Butler matrix is a switched beam array system which can produce orthogonal uniform beams. The main objective is to improve the efficiency of the power in a 90-degree bend. Also, the double-mitered bend is particularly interesting since it provides a substantially lower reflection coefficient and a lower value of S12 at a frequency of 2.4 GHz compared to an unmitered one. Therefore, this paper describes an optimum design using a double-mitered method with a 2 × 2 and a 4 × 4 Butler Matrix array, operating at 2.4 GHz which is used in wireless systems with an FR4 substrate.