Cactus-Shaped Frequency Reconfigurable Antenna for Sub 10 GHz Wireless Applications. - Muhammad Irfan 008; Wasi Ur Rehman Khan; Sadiq Ullah; Naveed Mufti; Muhammad Fawad Khan; Rizwan Ullah; Usman Ali; Fazal Muhammad; Faisal AlThobiani; Mohammed Alshareef; Shadi Alghaffari; Saifur Rehman; et al. (Comput. Syst. Sci. Eng., 2023)