References
- Da Xu L, 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
- Vaughan RG. Polarization diversity in mobile communications. IEEE Trans Veh Technol. 1990;39(3):177–186. doi: 10.1109/25.130998
- Valenzuela-valdes JF, Garcia-fernandez MA, Martinez-gonzalez AM, et al. The role of polarization diversity for MIMO systems under Rayleigh-fading environments. IEEE Antennas Wireless Propag Lett. 2006;5:534–536. doi: 10.1109/LAWP.2006.889552
- Chen S-C, Cai W-S, Hsu C-IG, et al. Low-profile switchable LTE/WWAN MIMO antenna system. J Electromagn Waves Appl. 2018;33:474–492. doi: 10.1080/09205071.2018.1557081
- Toktas A. Log-periodic dipole array-based MIMO antenna for the mobile handsets. J Electromagn Waves Appl. 2016;30(3):351–365.
- 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
- Chaurasia P, Kanaujia BK, Dwari S, et al. Metamaterial based circularly polarized hexa-band patch antenna with small frequency ratios for multiple wireless applications. J Electromagn Waves Applons. 2019. doi: 10.1080/09205071.2018.1561330
- Sung Y. Stub-loaded square-ring antenna for circular polarization applications. J Electromagn Waves Appl. 2016;30(11):1465–1473. doi:10.1080/09205071.2016.1202788.
- Kuo C-J, Liou C-Y, Yeh J-C, et al. A novel wideband circularly polarized dual-fed slot antenna with microstrip feeding network. J Electromagn Waves Appl. 2016;30(2):175–187. doi:10.1080/09205071.2015.1098574.
- Chang T-N, Lin J-M. Dual-band circularly polarized monopole antenna. J Electromagn Waves Appl. 2015;29(7):843–857. doi:10.1080/09205071.2015.1022265.
- Lee JM, Kwon G, Song CM, et al. Wideband circularly polarized Spidron fractal slot antenna with a grooved dielectric resonator. J Electromagn Waves Appl. 2015;29(14):1942–1951. doi:10.1080/09205071.2015.1071207.
- Liao W-J, Yeh J-T, Chang S-H. Circularly polarized chip antenna design for GPS reception on handsets. IEEE Trans Antennas Propag. 2014;62(7):3482–3489. doi: 10.1109/TAP.2014.2320537
- Zahid Z, Qu L, Kim H-H, et al. Circularly polarised loop-type ground radiation antenna for mobile devices using a resonance inductor and capacitor. Electron Lett. 2018;54(5):262–264. doi: 10.1049/el.2017.4223
- Liang Z, Li Y, Long Y. Multiband monopole mobile phone antenna with circular polarization for GNSS application. IEEE Trans Antennas Propag. 2014;62(4):1910–1917. doi: 10.1109/TAP.2014.2299821
- Gyasi KO, Wen G, Inserra D, et al. A compact broadband cross-shaped circularly polarized planar monopole antenna with a ground plane extension. IEEE Antennas Wireless Propag Lett. 2018;17(2):335–338. doi: 10.1109/LAWP.2018.2789430
- Yao Y, Wang X, Chen X, et al. Novel diversity/MIMO PIFA antenna with broadband circular polarization for multimode satellite navigation. IEEE Antennas Wireless Propag Lett. 2012;21:65–68.
- Schroeder WL, Famdie CT, Solbach K. Utilisation and tuning of the chassis modes of a handheld terminal for the design. Presented in Proc. IEE Conference on wideband and Multiband antennas and Arrays; Birmingham, UK, 2005.
- Chang C-H, Wong K-L. Bandwidth enhancement of internal WWAN antenna using an inductively coupled plate in the small-size mobile phone. Microw Opt Technol Lett. 2010;52(6):1247–1253. doi: 10.1002/mop.25196
- Qu L, Zhang R, Shin H, et al. Mode-controlled wideband slot-fed ground radiation antenna utilizing metal loads for mobile applications. IEEE Trans Antennas Propag. 2017;65(2):867–872.
- 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
- Chen Y, Wang C-F. Characteristic modes: theory and applications in antenna engineering. Hoboken (NJ): John Wiley & Sons; 2015.