W. Salman, J. ., M. Ameen, M. ., & O. Hassan , S. . (2006). Parametric Study of the Rectangular Microstrip Antenna using Cavity Model. Journal of Engineering and Sustainable Development, 10(2), 72-88. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1806