Amar Danial Abd Azis, Shipun Anuar Hamzah, Mohd Noh Dalimin, Khairun Nidzam Ramli, Mohd Sani Yahya, Fauziahanim Che Seman, Wahyu Mulyo Utomo, Bilal A. Khawaja, Shahilah Nordin, Muladi
This paper describes the design and testing of a compact dual-band printed dipole antenna, optimized for 916 MHz and 1.57 GHz, aimed at LoRa and GPS applications. The design features a linear dipole functioning at 916 MHz and 2.7 GHz. A small triangular-shaped linear balun has been developed as the matching network. Parasitic elements are employed to tune the second frequency to 1.57 GHz through a parametric study. Meanwhile, a stub is used to suppress the undesired 2.7 GHz frequency. This antenna is capable of operating on dual-frequency bands simultaneously with high efficiency in suppressing the unwanted frequency. The antenna exhibits a return loss of -20 dB at 916 MHz and -11 dB at 1.57 GHz, with VSWR values of 1.31 and 1.98, respectively. The gain is 2.05 dBi at 916 MHz and 1.05 dBi at 1.57 GHz. The bandwidth for the band is 78 MHz, while the bandwidth for the GPS band is 24 MHz, respectively. The radiation pattern of the antenna exhibits a focused E-plane and a circularly polarized H-plane at both frequencies. Due to its compact design and dual-band functionality, this antenna holds significant promise for IoT applications that demand both LoRa and GPS communication, especially in scenarios where a small yet efficient form factor is crucial. © 2025 IEEE.
Universiti Tun Hussein Onn Malaysia, Faculty of Electrical and Electronic Engineering, Johor, Parit Raja, 86400, Malaysia; Universiti Teknologi Petronas, Perak, Seri Iskandar, 32610, Malaysia; Islamic University of Madinah, Faculty of Engineering, Madinah, Saudi Arabia; Universiti Teknologi Mara, Electronic Engineering Department, Penang, Permatang Pauh, 13500, Malaysia; State University of Malang, Electronics Systems Engineering Technology, Faculty of Vocational Studies, Malang, 65145, Indonesia
