Author_Institution :
Dept. of Commun. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
This communication proposes a compact multiband antenna fed by microstrip coupling for handsets with conducting edge applications. The antenna is composed of a U-shaped loop, an inserted open-end T-shaped slot, and a feed line with a compact antenna area. Three types of resonant modes are excited, namely loop mode, slot mode, and monopole mode. Parametric studies have been performed. After the related parameters are controlled, the bandwidth of this antenna has the potential to cover the mobile bands of GSM (824-960 MHz), DCS (1710-1880 MHz), PCS (1850-1990 MHz), UMTS (1920-2170 MHz), LTE bands (FDD-LTE bands 1-10, 15, 16, 18-20, 22, 23, 25-27, and 30 and TDD-LTE bands 33-43). Good radiation characteristics, such as gain and radiation efficiency, are obtained with these operating bands. In addition, the structure of the inserted slot antenna reduced the user´s hand effects on the radiation efficiency.
Keywords :
3G mobile communication; antenna feeds; antenna radiation patterns; cellular radio; mobile handsets; multifrequency antennas; slot antennas; DCS; FDD-LTE bands; GSM; PCS; U-shaped loop; UMTS; compact antenna area; compact multiband antenna fed; conducting edge; frequency 1710 MHz to 1880 MHz; frequency 1850 MHz to 1990 MHz; frequency 1920 MHz to 2170 MHz; frequency 824 MHz to 960 MHz; inserted open-end T-shaped slot; inserted slot antenna; loop mode; microstrip coupling; mobile handsets; monopole mode; radiation characteristics; resonant modes; slot mode; Antenna measurements; Bandwidth; Feeds; Metals; Resonant frequency; Slot antennas; Cellular phone antennas; handset antenna; mobile phone antennas; multiband antenna; slot antenna;
