Ng C, Devi K, Chakrabarty C, Md. Din N, Kwong C. Gain Enhancement of Microstrip Patch Antenna using Low Loss Negative Refractive Index Metamaterial Superstrate. JTEC [Internet]. 2017Mar.15 [cited 2024Dec.22];9(1-4):95-9. Available from: https://jtec.utem.edu.my/jtec/article/view/1787