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Open AccessArticle

3d Beam Reconfigurable THz Antenna with Graphene-Based High-Impedance Surface

1
School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
2
School of Electronic Engineering and Computer Science, Queen Mary, University of London, London E1 4NS, UK
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(11), 1291; https://doi.org/10.3390/electronics8111291
Received: 17 September 2019 / Revised: 15 October 2019 / Accepted: 4 November 2019 / Published: 5 November 2019
(This article belongs to the Section Microwave and Wireless Communications)
: In this letter, a novel 3D multi-beam reconfigurable THz loop antenna capable of steering its main beam in the semi-sphere space (θ ϵ {0°, ±5°, ±10°}; φ ϵ {0°, 30°, 60°, 90°, 120°, 150°}) is presented. The antenna is based on a switchable circular high impedance surface (HIS) using the graphene–metal hybrid approach. The effect of gate voltage on the conductivity of graphene and the switchable reflection characteristic of the graphene-based HIS are combined in the design. Changing the chemical potential of different graphene-based HIS units can effectively adjust the beam direction. The performance of the antenna is analyzed through its reflection coefficients and gain radiation patterns, and simulated results show that the maximum gain can reach 3.23 dBi at 0.5 THz.
Keywords: beam reconfigurable; THz antenna; graphene; high-impedance surface beam reconfigurable; THz antenna; graphene; high-impedance surface
MDPI and ACS Style

Wang, C.; Yao, Y.; Yu, J.; Chen, X. 3d Beam Reconfigurable THz Antenna with Graphene-Based High-Impedance Surface. Electronics 2019, 8, 1291.

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