To realize the multi-functional manipulation of the acoustic field with a simple artificial structure, a waveguide array based on resonant units was proposed in this work. Based on the transmission spectrum and zero-like refractive index of the waveguide unit, the amplitude of the transmitted wave can be manipulated. By changing the size of the waveguide unit flexibly, the phase of the transmitted wave can be manipulated. In addition, by extending the waveguide array to the sub-wavelength scale, an acoustic metasurface with both amplitude and phase modulation functions can be implemented, which provides new ways for the design of lightweight artificial periodic structures.

中文翻译：

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基于波导阵列幅度和相位调制的声能传输特性

为了通过简单的人工结构实现对声场的多功能操控，本文提出了一种基于谐振单元的波导阵列。基于波导单元的传输光谱和类零折射率，可以操纵传输波的幅度。通过灵活改变波导单元的尺寸，可以控制传输波的相位。此外，通过将波导阵列扩展到亚波长尺度，可以实现具有幅度和相位调制功能的声学超表面，这为轻量级人工周期结构的设计提供了新的途径。