@article{MAKHILLJMC20126224993,
    title = {Design and Simulation 4x4 Butler Matrix Array for ISM-Band},
    journal = {Journal of Mobile Communication},
    volume = {6},
    number = {2},
    pages = {22-27},
    year = {2012},
    issn = {1990-794x},
    doi = {jmcomm.2012.22.27},
    url = {https://makhillpublications.co/view-article.php?issn=1990-794x&doi=jmcomm.2012.22.27},
    author = {Ayman},
    keywords = {microstrip,Butler matrix,Switch beam smart antenna system,electromagnatic,substrate,tangent},
    abstract = {This study proposes an 4x4 planar microstrip array antenna with Butler matrix performing network can be used for a switched beam smart antenna system. The prototype antenna is operating in the ISM from 2.4-2.48 GHz for WLAN applications. The antenna is built on a FR4 substrate with relative permittivity of &#949;<SUB>r</SUB> = 4.4, loss tangent of 0.02 and thickness of h = 1.6 mm. The performance of this smart antenna system was optimized and simulated by using commercially available full-wave, Method of Moment (MOM) based electromagnetic simulator Zeland IE3D.}
    }