Sonasang, Somchat, and อังควิศิษฐพันธ์นิวัตร์. “irectivity nhancement of icrostrip arallel oupled ines echniques ”. Journal of Engineering Technology Access (JETA) (Online) 1, no. 1 (June 29, 2021): 12-31. ccessed November 29, 2021. https://ph02.tci-thaijo.org/index.php/JETA/article/view/244237.