DR. RAJESH KUMAR; D. C. DHUBKARYA. Design and Analysis of Circular Ring Microstrip Antenna. Global Journals of Research in Engineering, [S. l.], v. 11, n. 1, p. -, 2011. Disponível em: https://engineeringresearch.org/index.php/GJRE/article/view/134. Acesso em: 9 may. 2024.