P K Singhal KMMGSKK. Attainment of Circular Polarization in Planar Patch & Conformal Patch Antenna using Ring Slotted Ground Plane. IJAST [Internet]. 2020Jan.31 [cited 2024May2];29(3):425 -439. Available from: http://sersc.org/journals/index.php/IJAST/article/view/3941