本研究是使用 FMCW 雷達藉由在 PCB 板之外殼上覆掛平面介質透鏡實現提高陣列天線的指向性以及聚焦之效果。其工作頻段分別為24GHz、77GHz 和79GHz。在車用雷達的頻段進入毫米波，其工作頻率大幅提升，由於高頻率的電磁波在空氣傳播時，其路徑損耗相對於低頻率損耗較大，並且在應用於車用雷達的天線之中，期望天線具有高指向性之特性，而在現今提高天線指向性以及增益的方法之中，除了增加天線陣列的數目之外，為了減少 PCB 之使用空間，本論文提出天線罩的運用，在不改變其原本PCB板大小的情況之下，也能降低波束的角度，達到聚焦的效果。
在 FMCW 車用雷達的應用之中，本論文提出了以平面介質透鏡配合車用雷達，工作頻率為79GHz 可以提升增益並且具有更高指向性的效果。我們選擇使用在 PCB 外殼之上覆掛平面介質透鏡，藉由透鏡對於電磁波的波速提供不同的折射以及散射之效果。在使用相同的空間之下，增加天線的增益。陣列天線將電磁波的能量集中於同一個方向，若是陣列天線的波束愈寬，則是代表在聚集電磁波能量之效能上較差，反之若是波束愈窄，則表示天線聚集電磁波之效能上較好，而當在相同的能量之下，天線波束愈窄，則天線的增益越大，則表示整體雷達的作用距離愈遠。

In this study, the FMCW radar used a planar dielectric lens to cover the PCB shell to improve the performance and focus of the antenna. Its working direction antennas are 24GHz, 77GHz, and 79GHz. When high-frequency electromagnetic waves propagate in the medium, the path consumes gain. And has the characteristics of high energy in the current method of improving antenna per-formance and gain and increasing the antenna gain of the aerial antenna. In addition to the number of PCBs, this article recommends using a radome to reduce the use of PCB space. In the case of not the original PCB board size, the focus can also be achieved by determining the angle of view.
In the application of FMCW vehicle radar, this paper proposes a ground-driven vehicle radar operating at a frequency of 79 GHz, which can improve performance and improve performance. We choose to use a flat material to cover the PCB shell and adopt a flat layout. Different antennas and antenna effects are provided for the velocity waves of electromagnetic waves. In the same space, increase the gain of the antenna. Conversely, if the beam is narrow, it indicates the growth rate of the wave absorbed by the antenna. The more the rope jumps, the antenna jumps to attack in the same energy range, which symbolizes the overall radar range attack.

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