This communication introduces a new structure of a partially reflective surface (PRS) to realize gain enhancement for a millimeter-wave Fabry–Pérot Cavity (FPC) antenna. It is the first attempt at applying a Fresnel zone plate (FZP) to a single-layer PRS, which contributes to a significant gain improvement. The proposed antenna consists of a feeding source, a substrate-integrated quasi-curve reflector, and the proposed PRS. With the quasi-curve reflector, multiple resonate modes are excited, providing a wide 3 dB gain bandwidth. For validation, a prototype of millimeter-wave FPC antenna is designed and measured. The antenna can be implemented by low-cost and mature printed-circuit-board (PCB) technology. The antenna yields a measured impedance bandwidth of 17.8% from 54 to 64.5 GHz and a 3 dB gain bandwidth of 13.3% from 56 to 64 GHz. The measured peak gain is 21 dBi at broadside direction. This antenna finds potential applications in high-speed communications at the millimeter-wave spectrum.

中文翻译：

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使用菲涅耳波带板集成 PRS 的毫米波法布里-珀罗腔天线

该通信引入了部分反射面 (PRS) 的新结构，以实现毫米波法布里-珀罗腔 (FPC) 天线的增益增强。这是将菲涅耳波带片 (FZP) 应用于单层 PRS 的首次尝试，这有助于显着提高增益。提议的天线由馈源、集成基板的准曲线反射器和提议的 PRS 组成。使用准曲线反射器，可以激发多种谐振模式，提供 3 dB 的宽增益带宽。为了验证，设计并测量了毫米波 FPC 天线的原型。天线可以通过低成本和成熟的印刷电路板（PCB）技术实现。该天线在 54 至 64.5 GHz 范围内产生 17.8% 的测量阻抗带宽，在 56 至 64 GHz 范围内产生 13.3% 的 3 dB 增益带宽。在宽边方向测得的峰值增益为 21 dBi。该天线在毫米波频谱的高速通信中具有潜在应用。