A Wideband Printed Dual-Antenna System With a Novel Neutralization Line for Mobile Terminals

Author

Yan Wang ; Zhengwei Du

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

12

fYear

2013

fDate

2013

Firstpage

1428

Lastpage

1431

Abstract

A wideband printed dual-antenna system for mobile terminals is presented. The dual-antenna, consisted of two symmetric antenna elements and a neutralization line (NL), is printed on a printed circuit board. The antenna element is an F-like monopole with a grounded branch. The working mechanism of the dual-antenna is analyzed based on the S-parameters and the surface current distributions. A prototype shows the measured -10-dB impedance bandwidth is 1.09 GHz (1.67-2.76 GHz) and the measured mutual coupling is lower than -15 dB at the 1.7-2.76-GHz bands. It covers the GSM1800, GSM1900, UMTS, LTE2300, LTE2500, and 2.4-GHz WLAN bands. The radiation patterns are measured, and the diversity performance is evaluated .

Keywords

3G mobile communication; Long Term Evolution; S-parameters; antenna radiation patterns; broadband antennas; cellular radio; current distribution; diversity reception; microstrip antennas; monopole antennas; multifrequency antennas; printed circuits; telecommunication terminals; wireless LAN; F-like monopole antenna; GSM1800; GSM1900; LTE2300; LTE2500; S-parameters; UMTS; WLAN; antenna radiation pattern; bandwidth 1.09 GHz; diversity performance; frequency 1.7 GHz to 2.76 GHz; frequency 2.4 GHz; impedance bandwidth; mobile terminal; mutual coupling; neutralization line; printed circuit board; surface current distribution; wideband printed dual antenna system; Antenna radiation patterns; Bandwidth; Couplings; Impedance; Mutual coupling; Scattering parameters; Broadband decoupling; grounded branch; multiantenna; multiple-input–multiple-output (MIMO); neutralization line;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2287199

Filename

6646246