A New Multimode Antenna for MIMO Systems Using a Mode Frequency Convergence Concept

Author

Sarrazin, Julien ; Mahé, Yann ; Avrillon, Stephane ; Toutain, Serge

Author_Institution

LTCI Res. Inst., Telecom ParisTech, Paris, France

Volume

59

Issue

12

fYear

2011

Firstpage

4481

Lastpage

4489

Abstract

A new multimode antenna is proposed in this paper. The structure is based on a mode frequency convergence concept. A microstrip square patch antenna is modified in order to force different modes to resonate at the same frequency. Then, with a common/differential excitation, these modes can be fed independently. Thus, three radiation patterns are available simultaneously, thereby producing diversity. With dimensions less than a guided wavelength (≈ 0.88λ_g), the proposed structure is well suited to reduce the size of multiple antennas used in diversity applications such as MIMO systems. The antenna has been designed in the 2.45 GHz band for Wi-Fi applications.

Keywords

MIMO communication; UHF antennas; antenna radiation patterns; microstrip antenna arrays; wireless LAN; MIMO systems; Wi-Fi applications; common/differential excitation; frequency 2.45 GHz; microstrip square patch antenna; mode frequency convergence; multimode antenna; radiation patterns; Antenna radiation patterns; MIMO; Microstrip antennas; Resonant frequency; Envelope correlation; microstrip antennas; multimode antennas; multiple input multiple output (MIMO) systems; radiation pattern diversity;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2165472

Filename

5991932