In this paper, we propose a reflector antenna with a microstrip-patch-array offset feed. The proposed antenna offers several advantages in design flexibility, especially to determine the horizontal and vertical beam patterns by the modular feed and the reflector curvature design, respectively. Moreover, it provides an internal tuning mechanism in the form of a tuning strip which is relatively simple to apply. The paper describes the steps in a parametric study carried out to minimize the antenna dimensions. The resulting optimized design is found to be around 50% smaller in dimension than the initial design of the proposed antenna. A demonstrator for experimental analysis, consisting of a transmit and a receive antenna, has been constructed, and the isolation between the antennas is found to be better than 70 dB. The antenna demonstrator has been integrated with an FMCW radar transceiver and satisfactorily tested to operate as a coastal surveillance radar.

中文翻译：

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使用带有微带贴片阵列偏置馈电和调谐带的半抛物面反射器的 FMCW 雷达天线

在本文中，我们提出了一种带有微带贴片阵列偏置馈电的反射器天线。所提出的天线在设计灵活性方面提供了几个优势，特别是通过模块化馈电和反射器曲率设计分别确定水平和垂直波束图。此外，它提供了一种调音带形式的内部调音机制，使用起来相对简单。该论文描述了为最小化天线尺寸而进行的参数研究中的步骤。发现最终优化设计的尺寸比建议天线的初始设计小 50% 左右。已经构建了一个用于实验分析的演示器，由一个发射天线和一个接收天线组成，发现天线之间的隔离度优于 70 dB。