A Four-Element Antenna System for Mobile Phones

Author

Ding, Yuan ; Du, Zhengwei ; Gong, Ke ; Feng, Zhenghe

Author_Institution

Tsinghua Univ., Beijing

Volume

6

fYear

2007

fDate

6/29/1905 12:00:00 AM

Firstpage

655

Lastpage

658

Abstract

In this letter, a multiantenna system with four printed monopoles is presented. The monopoles that occupy relatively small area are positioned at the four corners of a printed circuit board, so that the four-element antenna system can be equipped on the lid of a folder-type mobile phone, leaving enough space for the circuits and reducing the effect of human hands. Based on simulation, a prototype for the Universal Mobile Telecommunications System (UMTS) operation has been constructed and tested. The measured -10-dB impedance bandwidths of the four elements are larger than 320 MHz with higher than 11.5-dB isolation. Moreover, the proposed antenna can provide spatial and pattern diversity in a diversity/multiple-input-multiple-output (MIMO) system.

Keywords

3G mobile communication; MIMO communication; antennas; mobile radio; printed circuits; MIMO system; Universal Mobile Telecommunications System; folder-type mobile phone; four-element antenna system; mobile phone; multiantenna system; multiple-input-multiple-output system; printed circuit board; printed monopole; 3G mobile communication; Circuit simulation; Circuit testing; Humans; MIMO; Mobile antennas; Mobile handsets; Printed circuits; System testing; Virtual prototyping; Diversity; diversity; mobile phone; multi-antenna; multiantenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2007.913276

Filename

4389803