【摘要】 提出了一种基于阿基米德螺旋线和正弦波混合结构的反射单元，结合编码超表面原理，采用“0110…”编码序列设计了一款16×12规模的双波束微带反射阵列天线。天线工作于10 GHz，采用Vivaldi天线馈电，实现了稳定的双波束辐射。实测结果表明，天线-10 dB阻抗带宽为7.5%(9.56～10.31 GHz),E面双波束偏转角达13.5°，3-dB波束宽度为9.7°，峰值增益13.0 dBi。通过混合谐振单元设计，解决了传统反射阵列相位非线性导致的带宽受限问题，编码超表面的应用进一步简化了波束控制复杂度。更多还原

【Abstract】 This paper presents a dual-beam reflectarray antenna operating at 10 GHz, which is designed using hybrid resonant elements combining Archimedean spirals and sinusoidal structures. Based on the principles of coding metasurfaces, a 16 × 12 array employing the encoding sequence “0110… ” is developed. A Vivaldi antenna is adopted as the feed source, achieving stable dualbeam radiation characteristics. A prototype antenna was fabricated and measured. Experimental results indicate that the proposed antenna exhibits a-10 dB impedance bandwidth of 7.5%(9.56～10.31 GHz) with excellent impedance matching. At the operating frequency, the antenna demonstrates symmetric dual-beam radiation patterns in the E-plane with stable gain performance. Specifically, the measured 3-dB beamwidth is 9.7°, the dual-beam deflection angle is 13.5°, and the peak radiation gain reaches 13.0 dBi. The use of a hybrid harmonic oscillator unit solved the problem of limited bandwidth in traditional reflect array phased arrays. The application of coding beyond the surface further simplified the complexities of beam control.更多还原