Design of Signal Enhancing Multiband Antenna Using the Second Iteration of Sierpinski-Shaped Fractal for GSM/GPS/RFID Applications. - Jade C. De Juan; Lyriel Mae A. Desoyo; Andrea G. Delos Santos; Olga Joy Labajo-Gerasta; Christopher M. Gerasta; Gene Fe P. Palencia (ISCIT, 2023)