“A THREE-STAGE SLOTTED HEXAGRAM MICROSTRIP PATCH ANTENNA DESIGN AND S-PARAMETER ANALYSIS FOR K-BAND AND 5G N258 APPLICATIONS”. International Journal of Engineering Research and Science & Technology, vol. 22, no. 4, Nov. 2026, pp. 417-22, https://doi.org/10.62643/ijerst.2026.v22.n4.4834.