TY - GEN
T1 - A Compact Left-Handed Circularly Polarized Planar Antenna for Terahertz Applications
AU - El Ansari, Abdelaaziz
AU - Uddin, Jasim
AU - Khandare, Shobhit
AU - Younis, Fatima
AU - El Amrani El Idrissi, Najiba
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.
PY - 2026/8/24
Y1 - 2026/8/24
N2 - This paper presents a compact left-hand circularly polarized planar antenna for terahertz applications. The antenna features a graphene-based structure built on an RT/duroid® 5880 substrate, optimized for THz band operation. Initially, the antenna exhibited linear polarization. To achieve circular polarization, the graphene-based radiating element was modified through an optimization process that introduced truncated corners, flower and circular slots. These steps ensure optimal resonance at 2.45 THz with improved reflection loss and axial ratio characteristics. The resulting LHCP antenna, with compact dimensions of 54 × 52 × 1.57 µm3, exhibits superior performance, achieving a 10 dB return loss bandwidth of 100 GHz (2.4–2.5 THz), a 3 dB axial ratio bandwidth of 161 GHz (2.345–2.506 THz), a peak gain of 7 dB, and a peak radiation efficiency of 95%. These characteristics underscore its strong potential for high-performance wireless communication within the THz band (2.4–2.5 THz).
AB - This paper presents a compact left-hand circularly polarized planar antenna for terahertz applications. The antenna features a graphene-based structure built on an RT/duroid® 5880 substrate, optimized for THz band operation. Initially, the antenna exhibited linear polarization. To achieve circular polarization, the graphene-based radiating element was modified through an optimization process that introduced truncated corners, flower and circular slots. These steps ensure optimal resonance at 2.45 THz with improved reflection loss and axial ratio characteristics. The resulting LHCP antenna, with compact dimensions of 54 × 52 × 1.57 µm3, exhibits superior performance, achieving a 10 dB return loss bandwidth of 100 GHz (2.4–2.5 THz), a 3 dB axial ratio bandwidth of 161 GHz (2.345–2.506 THz), a peak gain of 7 dB, and a peak radiation efficiency of 95%. These characteristics underscore its strong potential for high-performance wireless communication within the THz band (2.4–2.5 THz).
KW - Circularly polarized antenna
KW - Graphene
KW - LHCP antenna
KW - RHCP antenna
KW - Terahertz antenna
KW - THz antenna
UR - https://www.scopus.com/pages/publications/105049639909
U2 - 10.1007/978-981-92-3681-7_26
DO - 10.1007/978-981-92-3681-7_26
M3 - Conference contribution
AN - SCOPUS:105049639909
SN - 9789819236800
T3 - Lecture Notes in Electrical Engineering
SP - 403
EP - 413
BT - Proceedings of the 3rd International Conference on Intelligent Technology, System and Service for Internet of Everything - ITSS-IoE
A2 - Rahman, Md Arafatur
PB - Springer Science and Business Media Deutschland GmbH
T2 - 3rd International Conference on Intelligent Technology, System and Service for the Internet of Everything, ITSS-IoE 2025
Y2 - 27 October 2025 through 28 October 2025
ER -