太赫兹超材料相控阵天线波束宽度调控方法

Beamwidth control method of terahertz metamaterial phased array antenna

摘要:

太赫兹超材料相控阵由于其强大的波束操纵能力在探测与通信一体化系统中具有重要的应用价值。为了提升系统的通信和探测性能，需要太赫兹超材料相控阵能够实现宽波束和窄波束的灵活切换。提出了一种基于反相位间隔(反相)编码的太赫兹超材料相控阵天线波束宽度调控方法。通过天线3 dB波束宽度表达式和目标波束宽度逆推阵列规模，保持其相位编码不变并对该阵列规模外的其余阵元进行反相编码，旨在实现相位相反相消。仿真结果表明，所提方法可以准确地调控太赫兹超材料相控阵天线的波束宽度，实现宽波束和窄波束的灵活切换。

Abstract:

Terahertz metamaterial phased array antenna has significant application value in integrated detection and communication systems due to its strong beam manipulation capabilities. In order to enhance the communication and detection performance of the system, it is necessary for terahertz metamaterial phased array antenna to achieve flexible switching between wide beams and narrow beams. Therefore, a beamwidth control method of terahertz metamaterial phased array antenna based on inverse phase interval(inverse phase) coding is proposed in this paper. The array size is reversed by the antenna 3dB beamwidth expression and the target beamwidth, the phase encoding is kept unchanged while the remaining elements outside the array size are inversely encoded, aiming to achieve phase cancellation by phase inversion. The simulation results demonstrate that the proposed method accurately controls the beamwidth of terahertz metamaterial phased array antenna, allowing for flexible switching between wide beams and narrow beams.