Abstract
This article presents a novel terahertz (THz) antenna array design comprising a layered structure of a perovskite material which enhances the radiation characteristics of an antenna overlaid on a conventional metallic antenna element. The simulated antenna consists of a THz gold patch antenna coated with a hybrid perovskite material, methyl-ammonium lead iodide CH 3 NH 3 PbI 3 which enables the manipulation of the THz electromagnetic waves. In addition to this, we also present a comparison of the antenna properties of the proposed hybrid perovskite material with antennas made of gold and perovskite only. The proposed antenna operates in the frequency band 0.9 - 1.2 THz. The simulated impedance bandwidth of the proposed array antenna ranges from 0.9 THz to 1.2 THz with a reflection coefficient (S11) less than -10 dB. The antenna array has a radiation patterns stability on the whole frequency band. The peak gain obtained is 11.4 dBi with perovskite arrays. The hybrid and perovskite antenna array demonstrate high radiation efficiency. The designs presented here will help in realising future wireless communication systems that require miniaturisation, fast reconfigurability and wearability.
Highlights
T HERATZ radiation is the electromagnetic spectrum lactated between the optical and microwave frequency band from 0.1 to 10 THz [1], [2]
The antenna performance of antenna based gold material failed to achieve the −10 dB reflection coefficient at frequencies above 1.15 THz as compared to gold, perovskite materials have significantly higher conductivity which leads to better antenna reflection
The best result has been achieved with perovskite antenna, where the gain was achieved at 1.1 THz and it was 11.4 dBi and that is 21% higher than the gold array antenna, this percentage can be improved if external voltage is applied to increase the electrons density in perovskite film and enhance the electric field further but at same time it make the design complicated as it needs a complete external biasing circuit
Summary
ABDOALBASET ABOHMRA 1 (Student Member, IEEE), HASSAN ABBAS 1,2 (Member, IEEE), MUATH AL-HASAN 3 (Senior Member, IEEE), ISMAIL BEN MABROUK 3 (Senior Member, IEEE), AKRAM ALOMAINY 4 (Senior Member, IEEE), MUHAMMAD A.
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