A Compact Ultrawideband MIMO Antenna With WLAN Band-Rejected Operation for Mobile Devices

Author

Lee, Jae-Min ; Kim, Ki-Baek ; Ryu, Hong-Kyun ; Woo, Jong-Myung

Author_Institution

Dept. of Radio Sci. & Eng., Chungnam Nat. Univ., Daejeon, South Korea

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

990

Lastpage

993

Abstract

This letter presents an ultrawideband multiple-input-multiple-output (MIMO) antenna that covers the WCDMA (1.92-2.17 GHz), WiMAX (2.3, 2.5 GHz), WLAN (2.4 GHz), and UWB (3.1-10.6 GHz) bands for wireless device applications. The proposed antenna consists of a printed folded monopole antenna coupled with a parasitic inverted-L element, with an open stub inserted in the antenna to reject the WLAN (5.15-5.85 GHz) band that interferes with the UWB band. These two antennas are symmetrically arranged on a mobile device substrate. The -10-dB bandwidth of the designed antenna is 1.85-11.9 GHz without the WLAN band 5.15-5.85 GHz. S₂₁ and the envelope correlation coefficient are lower than -17.2 dB and 0.18 in the operating bands, respectively. The size of the antenna is 55 ×13.5 × mm².

Keywords

MIMO communication; microwave antenna arrays; mobile handsets; ultra wideband antennas; UWB bands; WCDMA band; WLAN band-rejected operation; WiMax band; bandwidth 1.85 GHz to 11.9 GHz; compact ultrawideband MIMO antenna; compact ultrawideband multiple-input-multiple-output antenna; frequency 1.92 GHz to 2.17 GHz; frequency 2.3 GHz to 2.5 GHz; frequency 5.15 GHz to 5.85 GHz; mobile devices; parasitic inverted-L element; printed folded monopole antenna; Antenna measurements; MIMO; Mobile antennas; Mobile handsets; Ultra wideband antennas; Wireless LAN; Band-rejected antennas; mobile devices; multiple-input–multiple-output (MIMO) antennas; wideband antennas;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2214431

Filename

6276226