Conference Paper

Millimeter Wave Reconfigurable Antenna Based on Active Printed Array and Inhomogeneous Lens

Inst. of Electron. & Telecommun. of Rennes, Univ. of Rennes I, Rennes
DOI: 10.1109/EUMC.2008.4751409 Conference: Microwave Conference, 2008. EuMC 2008. 38th European
Source: IEEE Xplore

ABSTRACT This paper deals with radiation pattern reconfigurable antenna in millimetre wave range. An active printed antenna array is designed in 24 GHz band and feed an inhomogeneous lens (Half Maxwell Fish Eye) to obtain reconfigurable patterns and in particular sectorial and directive cases. In the first part, the authors describe a four patches multilayer active array which allows achieving radiation pattern control by associating a commutator to each element and by changing the fed patches number. In a second part, this array feed an inhomogeneous lens to shape radiation pattern.

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    ABSTRACT: A design procedure for spherical lens antennas is described. A particle swarm optimization (PSO) algorithm is coupled to a mode matching technique based on spherical wave expansion to analyze the lens antennas. The proposed methodology is applied to three optimization problems using real-number and binary PSO. First, the maximization of the directivity of Luneburg lens antennas is addressed. Then, amplitude shaped radiation patterns are synthesized by optimizing both amplitude and position of each element of an array that illuminates a lens. Finally, a dual-beam reconfigurable lens antenna is optimized. By only switching properly the elements of an array, the lens antenna radiates either a directive or a sectoral beam. Numerical comparisons with a full wave commercial software successfully validate the proposed design procedure. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1655–1659, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25278
    Microwave and Optical Technology Letters 07/2010; 52(7):1655 - 1659. DOI:10.1002/mop.25278 · 0.62 Impact Factor

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