Affiliations: [a] Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan | [b] Department of Electronic Engineering, Jinwen University of Science and Technology, Taiwan
Correspondence:
[*]
Corresponding author: Cheng-Chang Chen, Department of Electronic Engineering, National Taiwan University of Science and Technology, No. 99, Anzhong Rd., Xindian Dist., New Taipei City 23154, Taiwan.
E-mail:ex0206@just.edu.tw
Abstract: A novel multi-band broadband antenna for mobile handsets application is
proposed and analyzed in this paper. An asymmetric T-type monopole antenna
with a shorting-line is designed to be operated in long term evolution (LTE,
698 MHz-960 MHz, 1710 MHz-2170 MHz, 2500 MHz-2690 MHz) and wireless local area
network (WLAN, IEEE 802.11ac,
5150 MHz-5850 MHz) bands. A prototype of the
proposed antenna with 50 mm in length and 8 mm in width is fabricated and
investigated experimentally. The experimental results indicate that the
bandwidths for VSWR of 3:1 achieved were 37.75%, 24.63%, 11.46% and
21.76% at 800 MHz, 1900 MHz, 2600 MHz and 5500 MHz, respectively. The
specific absorption rate (SAR) for an input power of 24 dBm in LTE band, and
an input power of 13 dBm in IEEE 802.11ac band meet the SAR limit of 1.6 mW/g. Experimental results verify the prediction of the theoretical analysis.
Keywords: LTE-band antenna, mobile handsets, T-type monopole, shorting-line, specific absorption rate (SAR)
