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

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 in...

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Veröffentlicht in:	IEEE transactions on antennas and propagation 2011-12, Vol.59 (12), p.4481-4489
Hauptverfasser:	Sarrazin, J., Mahe, Y., Avrillon, S., Toutain, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna radiation patterns Antennas Applied sciences Business and industry local networks Electronics Engineering Sciences Envelope correlation Exact sciences and technology Microstrip antennas MIMO multimode antennas multiple input multiple output (MIMO) systems Networks and services in france and abroad radiation pattern diversity Radiocommunications Resonant frequency Telecommunications Telecommunications and information theory Teleprocessing networks. Isdn
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Beschreibung
Zusammenfassung:	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.
ISSN:	0018-926X 1558-2221
DOI:	10.1109/TAP.2011.2165472