Journal ArticleDOI
Shaped dielectric lenses for wireless millimeter-wave communications
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TLDR
In this article, the authors present an overview of the design and measured performance of some examples of dielectric lenses that can be used in typical scenarios of wireless broadband communication systems, and also address the radio coverage produced by these antennas.Abstract:
Dielectric-lens antennas are effective at producing highly shaped beams that can enhance the performance of wireless broadband communication systems. Beam shaping is used to reduce multipath interference, which causes fading and decay spread, and to enhance gain, so that the received power level is compatible with the requirements of high-data-rate transmission. This paper presents an overview of the design and measured performance of some examples of dielectric lenses that can be used in typical scenarios of wireless broadband communication systems. The paper also addresses the radio coverage produced by these antennas. The lenses are based on a single basic configuration where the feed is embedded in the lens body. This antenna configuration is flexible enough to accommodate different target beam-shaping specifications.read more
Citations
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Journal ArticleDOI
Compact Beam-Steerable Lens Antenna for 60-GHz Wireless Communications
TL;DR: In this paper, a steerable beam antenna composed of a dielectric lens which pivots in front of a single stationary moderate gain feed is presented, which not only allows steering mechanically the beam in elevation and full azimuth but further increases the gain up to 21 dBi.
Journal ArticleDOI
Whispering-gallery and Luneburg-lens effects in a beam-fed circularly layered dielectric cylinder
TL;DR: In this paper, the whispering gallery effect and Luneburg lens effect were studied for a lossy circularly layered dielectric cylinder illuminated by a beam field, and the latter was simulated by the complex source point (CSP) beam.
Journal ArticleDOI
Reduced-Size Double-Shell Lens Antenna With Flat-Top Radiation Pattern for Indoor Communications at Millimeter Waves
TL;DR: In this paper, the authors investigated the capabilities of reduced-size integrated lens antennas to produce flat-top radiation patterns for broadband wireless communication systems at millimeter-wave frequency bands.
Journal ArticleDOI
Flexible Controls of Terahertz Waves Using Coding and Programmable Metasurfaces
Shuo Liu,Tie Jun Cui +1 more
TL;DR: A new structure featuring low electromagnetic interference and ultrahigh efficiency is designed to implement the ring-shaped pattern, which shows highly consistent results to the theoretical results calculated by Fourier transform.
Journal ArticleDOI
Assessment of FDTD Accuracy in the Compact Hemielliptic Dielectric Lens Antenna Analysis
TL;DR: In this paper, the accuracy of FDTD code in the analysis of the near and far-field characteristics of two-dimensional (2D) models of small-size dielectric lens antennas made of low or high-index materials and fed by the line sources was evaluated.
References
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Journal ArticleDOI
Developing a system concept and technologies for mobile broadband communications
TL;DR: The mobile broadband system (MBS) concept is basically to extend, to mobile users, access to the range of broadband services which will exist for fixed users, and implies the establishment of a universal system architecture, capable of cost effectively handling a wide range of equipment with diverse service attributes, in a widerange of applications, involving high data-rates and mobile terminals.
Journal ArticleDOI
Performance of lens antennas in wireless indoor millimeter-wave applications
Carlos A. Fernandes,J. Fernandes +1 more
TL;DR: In this paper, a hemispherical coverage lens antenna is designed for the mobile terminal (MT) to ensure relatively free movement, considering the effect of cell radius scaling, and MT antenna tilting.
Journal ArticleDOI
Dielectric Lens Antennas for Wireless Broadband Communications
TL;DR: Dielectric lens antennas are proposed for wireless broadband communication systems in the mm-wave range and use a circular waveguide as the feed targeting typical applications at 60 GHz and 40 GHz range.
Proceedings ArticleDOI
Impact of shaped lens antennas on MBS systems
J. Fernandes,Carlos A. Fernandes +1 more
TL;DR: The description of the antenna system and its radiation characteristics are given together with the analysis of the implications of these antennas on the cell coverage and channel time dispersion.
Proceedings ArticleDOI
Shaped coverage of elongated cells at millimetrewaves using a dielectric lens antennas
TL;DR: In this article, a dielectric lens antenna was developed in the framework of the European RACE II R2067-MBS project, to equip its Demonstrator, and the actual yielded coverage in a long indoor corridor and the fading of the received signal were compared with the performances of conventional rectangular horns when used in the same type of cells.
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