Sabaawi, A. M. A., Younus, K. M. “Multiband Handset Antenna System for UMTS/LTE/WLAN/Sub-6 5G and mmWave 5G Future Smartphones”, Periodica Polytechnica Electrical Engineering and Computer Science, 66(2), pp. 116–121, 2022. https://doi.org/10.3311/PPee.19679