Title :
Cylindrical non-homogeneous anisotropic lenses using artificial media
Author :
Silveirinha, M.G.M.V. ; Fernandes, C.A.
Author_Institution :
Instituto de Telecomunicacoes, Instituto Superior Tecnico, Lisbon, Portugal
Abstract :
Shaped homogenous dielectric lenses were proposed and thoroughly investigated as antenna elements for mobile broadband communications systems at millimeter-waves. Now that the shaped-beam concept was shown to be very effective for this application, it is desirable to study alternative lens configurations that favor its integration with planar circuit technology. This paper proposes two cylindrical lens configurations using a non-uniform anisotropic material, that produce highly shaped beams for millimeter-wave mobile applications like sec/sup 2/ and flat-top output patterns. Our design is based on geometric optics (GO) for anisotropic media, being to our best knowledge, the first time in the literature that the effect of the anisotropy of an artificial material is taken in account in the lens design.
Keywords :
anisotropic media; antenna radiation patterns; dielectric devices; geometrical optics; land mobile radio; lens antennas; millimetre wave antennas; shaped beam antennas; GO; anisotropic media; antenna elements; artificial media; cylindrical nonhomogeneous anisotropic lenses; flat-top output patterns; geometric optics; lens antenna design; millimeter-wave mobile applications; mobile broadband communication systems; nonuniform anisotropic material; planar circuit technology; sec/sup 2/ output patterns; secant squared output pattern; shaped homogenous dielectric lenses; shaped-beam antenna; Anisotropic magnetoresistance; Broadband antennas; Broadband communication; Dielectrics; Geometrical optics; Lenses; Millimeter wave circuits; Millimeter wave technology; Mobile antennas; Optical design;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.960031
