References
- Xu L D, He W, Li S. Internet of things in industries: a survey. IEEE Trans Ind Informat. 2014;10(4):2233–2243. doi: 10.1109/TII.2014.2300753
- Koivisto P. Comparision of measured and FDTD calculated distortions of antenna radiation patterns due to nearby boards. J Electromagn Waves Appl. 1998;12(12):1679–1699. doi: 10.1163/156939398X00593
- Sim D-U, Park S-O. A triple-band internal antenna: design and performance in the presence of the handset case, battery, and human head. IEEE Trans Electromagn Compat. 2005;47(3):658–666. doi: 10.1109/TEMC.2005.850695
- Khattak MK, Kahng S. A novel dipole antenna backed by a thin and small-area AMC for good impedance match and low SAR on human tissue. J Electromagn Waves Appl. 2016;30(12):1591–1602. doi: 10.1080/09205071.2016.1207567
- Xu Y, Qu L, Kim H-H, et al. Improvement of ground radiation antenna performance using compact EBG in the presence of battery effects. Electron Lett. 2018;54(13):798–800. doi: 10.1049/el.2018.1059
- Park HH. Reduction of electromagnetic noise coupling to antennas in metal-framed smartphones using ferrite sheets and multi-via EBG structures. IEEE Trans Electromagn Compat. 2018;60(2):394–401. doi: 10.1109/TEMC.2017.2743345
- Qu L, Zhang R, Kim H. High-sensitivity ground radiation antenna system using an adjacent slot for bluetooth headsets. IEEE Trans Antennas Propag. 2015;63(12):5903–5907. doi: 10.1109/TAP.2015.2481919
- Martens R, Manteuffel D. Systematic design method of a mobile multiple antenna system using the theory of characteristic modes. IET Microw Antennas Propag. 2014;8(12):887–893. doi: 10.1049/iet-map.2013.0534
- Wu D, Hua X, Cheung SW, et al. A compact slot MIMO antenna for smartphones with metal housing. J Electromagn Waves Appl. 2018;32(2):204–214. doi: 10.1080/09205071.2017.1374883
- Piao H, Zahid Z, Jin Y, et al. Compact loop-type antenna with ground-mode tuning for dual-band IoT applications. J Electromagn Waves Appl. 2019;33(11):1453–1462. doi: 10.1080/09205071.2019.1614097
- Chen S-C, Cai W-S, Hsu C-IG, et al. Low-profile switchable LTE/WWAN MIMO antenna system. J Electromagn Waves Appl. 2018. DOI:10.1080/09205071.2018.1557081.
- Villanen J, Ollikainen J, Kivekäs O, et al. Coupling element-based mobile terminal antenna structures. IEEE Trans Antennas Propag. 2006;54(7):2142–2153. doi: 10.1109/TAP.2006.877162
- Keum K, Piao H, Choi J. Design of a short/open-ended slot antenna with capacitive coupling feed strips for hepta-band mobile application. J Electromag Eng Sci. 2018;18(1):46–51. doi: 10.26866/jees.2018.18.1.46
- Qu L, Zahid Z, Kim H-H, et al. Circular polarized ground radiation antenna for mobile applications. IEEE Trans Antennas Propag. 2018;66(5):2655–2660. doi: 10.1109/TAP.2018.2811840
- Zhang R, Liu Y, Kim H. Effect of capacitor position on radiation patterns of ground radiation antenna. Electron Lett. 2015;51(23):1844–1846. doi: 10.1049/el.2015.1510
- Zahid Z, Qu L, Kim H-H, et al. Circularly polarized loop-type ground radiation antenna for IoT applications. J Electromag Eng Sci. 2019;19(3):153–158. doi: 10.26866/jees.2019.19.3.153
- Harrington RF, Mautz JR. Theory of characteristic modes for conducting bodies. IEEE Trans Antennas Propag. 1971;19(5):622–628. doi: 10.1109/TAP.1971.1139999
- Dicandia FA, Genovesi S, Monorchio A. Efficient excitation of characteristic modes for radiation pattern control by using a novel balanced inductive coupling element. IEEE Trans Antennas Propag. 2018;66(3):1102–1113. doi: 10.1109/TAP.2018.2790046