In this paper, a reconfigurable graphene leaky-wave antenna (GLWA) with electronic beam scanning capability for THz communications system is proposed. It consists of graphene strips printed on silicon oxide substrate and is fed by a planar H-plane horn antenna. The tunable graphene conductivity using DC-bias is used to control the GLWA-radiated beam direction without changing its physical structure. By selecting the proper periodicity of the biased/unbiased graphene strips (i.e., codes) of the GLWA, the beam direction, scanning range, gain, and SLL are changed without changing the array layout. A parametric study on the effect of GLWA dimensions on the radiation characteristics is studied. The radiated beam is electronically scanned from − 68° to 26° at a fixed frequency of 2 THz using different codes. The proposed antenna is simple in design, easy to control via the bias/unbiased periodic graphene strips. It has a compact size of \(1350\times 300\times 35 {{\mu m}}^{3}\). The GLWA coded by 1111111000 has a peak gain of 19.7 dBi, SLL of − 10.8 dB and beam radiated in 8° direction at 2 THz. The code 11111000 has beam scanning from − 35° to − 3° with frequency varying from 1.8 to 2.2 THz with 20.0 dBi gain. An investigation of the radiation characteristics of different codes of GLWA is introduced. The effect of GLWA feeding with substrate integrated waveguide (SIW) H-plane horn antenna that is compared with the ideal wave-port is studied. The GLWA with code 11111000 introduces BW of 21.95% (1.72–2.15 THz) with good impedance matching. The antenna structure is full-wave simulated and studied using the finite integral technique.

本文提出了一种具有电子束扫描能力的可重构石墨烯漏波天线（GLWA），用于太赫兹通信系统。它由印刷在氧化硅基板上的石墨烯条组成，并由平面H平面喇叭天线供电。使用直流偏置的可调石墨烯电导率可用于控制GLWA辐射的光束方向，而无需更改其物理结构。通过选择GLWA的偏置/无偏置石墨烯带（即代码）的适当周期性，可以在不更改阵列布局的情况下更改光束方向，扫描范围，增益和SLL。对GLWA尺寸对辐射特性的影响进行了参数研究。使用不同的代码以2 THz的固定频率从− 68°到26°对电子束进行电子扫描。拟议的天线设计简单，易于通过偏置/无偏周期石墨烯条进行控制。它具有紧凑的尺寸\（1350 \ times 300 \ times 35 {{\ mu m}} ^ {3} \）。由1111111000编码的GLWA的峰值增益为19.7 dBi，SLL为− 10.8 dB，并且光束以2 THz的方向在8°方向上辐射。代码11111000的波束扫描范围为− 35°至− 3°，频率从1.8至2.2 THz不等，增益为20.0 dBi。介绍了对不同GLWA代码的辐射特性的研究。研究了与理想波口比较的衬底集成波导（SIW）H平面喇叭天线对GLWA馈电的影响。代码为11111000的GLWA引入了21.95％（1.72-2.15 THz）的带宽，并具有良好的阻抗匹配。使用有限积分技术对天线结构进行全波仿真和研究。