Title :
UWB antenna built into 3G smartphones
Author :
Koshiji, Fukuro ; Akiyama, Yoko ; Koshiji, Kohji
Author_Institution :
Sch. of Sci. & Eng., Kokushikan Univ., Tokyo, Japan
Abstract :
In recent years, ultra-wideband (UWB) technology has received considerable attention as a promising technology for realizing ubiquitous networks. In comparison with conventional narrowband antennas, it is more difficult to construct a broadband antenna in electronic equipment because it is necessary to ensure antenna performance over the entire UWB frequency band. In this study, we investigated an unbalanced dipole antenna with semicircular and trapezoidal elements, known for its excellent, broadband performance, in 3G smartphones. Further, we proposed and investigated an antenna configuration that serves both the 2-GHz band for 3G smartphones and the 3.1-10.6-GHz UWB. As a result, we designed and developed an antenna configuration with a VSWR of less than 2.1 in both the 3G and UWB frequency bands, which was adequate for practical use.
Keywords :
3G mobile communication; UHF antennas; dipole antennas; microwave antennas; ubiquitous computing; ultra wideband antennas; ultra wideband communication; 3G smartphones; UWB antenna; UWB frequency band; bandwidth 2 GHz; bandwidth 3.1 GHz to 10.6 GHz; broadband antenna; electronic equipment; semicircular elements; trapezoidal elements; ubiquitous networks; ultra-wideband technology; unbalanced dipole antenna; Antenna radiation patterns; Dipole antennas; Smart phones; Ultra wideband antennas; Broadband antenna; Electromagnetic field analysis; Smartphone; Third-generation; Ultra wideband;
Conference_Titel :
Ultra-Wideband (ICUWB), 2013 IEEE International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/ICUWB.2013.6663828
