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Open AccessArticle

Broadband High-Gain Antenna for Millimetre-Wave 60-GHz Band

KACST-TIC in Radio Frequency and Photonics for the e-Society (RFTONICS), Electrical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia
Laboratory of physics of materials-Structures and properties, Computer Department, Faculty of Sciences of Bizerte, University of Carthage, Carthage 1054, Tunisia
Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia
Author to whom correspondence should be addressed.
Electronics 2019, 8(11), 1246;
Received: 18 September 2019 / Revised: 25 October 2019 / Accepted: 25 October 2019 / Published: 31 October 2019
(This article belongs to the Section Microwave and Wireless Communications)
This paper focuses on the 60 GHz band, which is known to be very attractive for enabling next-generation abundant multi-Gbps wireless connectivity in 5G communication. We propose a novel concept of a double-layer antenna, loosely inspired from standard log-periodic schemes but with an aperiodic geometry, reduced size, and a limited number of elements while achieving excellent performance over the entire 60 GHz band. To maximize the antenna’s efficiency, we have developed a design that differs from those traditionally used for millimeter-wave communication applications. We aim to simultaneously maximize the gain, efficiency, and bandwidth. The reflection coefficient of the proposed design achieves a bandwidth of 20.66% from 53.9 GHz up to 66.3 GHz, covering the entire frequency band of interest. In addition, this proposed structure achieves a maximum realized gain of 11.8 dBi with an estimated radiation efficiency of 91.2%. The proposed antenna is simulated, fabricated, and tested in an anechoic chamber environment. The measurement data show a reasonable agreement with the simulation results, with respect to the bandwidth, gain, and side-lobe level over the operational spectrum. View Full-Text
Keywords: 60 GHz; high efficiency; millimeter-wave antenna; dipole 60 GHz; high efficiency; millimeter-wave antenna; dipole
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Issa, K.; Fathallah, H.; Ashraf, M.A.; Vettikalladi, H.; Alshebeili, S. Broadband High-Gain Antenna for Millimetre-Wave 60-GHz Band. Electronics 2019, 8, 1246.

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