Metamaterial radome composed of negative refractive index lens for mobile base station antennas

Narrow beam width, higher gain and multibeam characteristics are demanded in 5G technology. Array antennas that are utilized in the existing mobile base stations have many drawbacks when operating at upper 5G frequency bands. For example, due to the high frequency operation, the antenna elements become smaller and thus, in order to provide higher gain, more antenna elements and arrays are required, which will cause the feeding network design to be more complex. The lens antenna is one of the potential candidates to replace the current structure in mobile base station. Therefore, a negative refractive index shaped lens is proposed to provide high gain and narrow beamwidth using energy conservation and Abbe’s sine principle. The aim of this study is to investigate the multibeam characteristics of a negative refractive index shaped lens in mobile base station applications. In this paper, the feed positions for the multibeam are selected on the circle from the center of the lens and the accuracy of the feed position is validated through Electromagnetic (EM) simulation. Based on the analysis performed in this study, a negative refractive index shaped lens with a smaller radius and slender lens than the conventional lens is designed, with the additional capability of performing wide-angle beam scanning.

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Negative Refractive Index Shaped Lens for Mobile Base Station

International Journal of Electrical & Electronic Systems Research (IEESR) ◽

10.24191/jeesr.v18i1.016 ◽

2021 ◽

Vol 18 (APR2021) ◽

pp. 94-98

Author(s):

Salbiah Ab Hamid ◽

Nurul Huda Abdul Rahman ◽

Yoshihide Yamada ◽

Idnin Pasya Ibrahim

Keyword(s):

Refractive Index ◽

Negative Refractive Index ◽

Base Station ◽

Mobile Base Station ◽

Mobile Base

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A Compact MultiBand and Dual-Polarized Mobile Base-Station Antenna Using Optimal Array Structure

International Journal of Antennas and Propagation ◽

10.1155/2015/178245 ◽

2015 ◽

Vol 2015 ◽

pp. 1-11 ◽

Cited By ~ 6

Author(s):

Young-Bae Jung ◽

Soon-Young Eom

Keyword(s):

Mobile Communications ◽

Urban Landscape ◽

Base Station ◽

Communication Service ◽

Base Station Antennas ◽

Communications Services ◽

Multiple Services ◽

Mobile Base Station ◽

Array Structure ◽

Mobile Base

This paper introduces a multiband base-station antenna to provide multiple communications services. There is growing need for multiband base-station antennas for mobile communications to serve existing 2nd and 3rd generation systems and to provide emerging 4th generation communication service as well as WiFi. For example, cellular, PCS, and especially WCDMA service are currently widely used in Korea, and 4th generation service (WiBro and LTE), introduced in 2011, will have to operate in parallel with existing services. The proposed multiband base-station antenna can provide a single/dual/triple or more multiple services using dual-polarization (±45° linear polarizations) according to the requirements of the service provider. This antenna has a shared aperture, having several array antenna sets for multiple services (Band 1: cellular service in 0.824~0.894 GHz, Band 2: PCS, WCDMA, and WiFi in 1.920~2.170 GHz, Band 3: WiBro and WiMAX in 2.300~2.400 GHz, and Band 4: WiMAX in 5.150~5.850 GHz). This antenna can be helpful for reducing base-station operating expenses and to create a clean urban landscape by minimizing the number of base-station antennas, which are increasing rapidly.

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