摘要
本篇論文使用的NFC(Near Field Communication)天線設計於13.56MHz，主要用於智慧產品上，如全金屬機殼變型筆電、POS機或是智慧電視等等。這些智慧產品為了使消費者在使用上更為便利，機身輕薄短小，且匯集更多功能於產品當中已是家常便飯。在這些影響下，天線的設計空間逐漸減小且必須挑戰更困難的環境。傳統使用PCB設計的天線，已無法達成現代產品的需求，因此為了增加天線的柔軟性與縮小天線體積改用FPC設計，並採用新的設計方式來達成微型化天線的成果，來符合未來趨勢的需求。
本文主要分為三個部分，首先第一個部分是使用的正方型微型化的NFC天線，尺寸為25mm*25mm，並找出繞線方式、線寬與線距三者在讀卡中的最佳組合，並用於實務當中。第二個部分是在實務中所給予設計空間逐漸縮小，因此由正方型天線轉化為更細長的長方型天線來滿足產品需求。
最後一個部分由於產品所需的天線過小，平面繞線方式已經無法滿足設計需求，但在這兩篇期刊文章[7] [8]的啟發下，設計出全新的堆疊繞線方式天線並成功解決此艱難的挑戰。
關鍵字: 微型化、天線設計、NFC。

The NFC (Near field communication) antenna discussed in this paper is designed to use 13.56 MHz and is used mainly in smart products, such as laptops with all-metal chasses, POS machines or smart TVs. In order to make it more convenient for consumers to use these smart products, the body is light, thin and short, and it is common to integrate more functions into the product. Under these limitations, the design space of the antenna is gradually reduced and a more difficult environment must be overcome. Traditional antennas designed with PCB (Printed circuit board) can no longer meet the needs of many modern products. Therefore, in order to increase the flexibility and reduce the size of the antenna, the FPC (Flexible printed circuit) design is used, with new methods to obtain a miniaturized antenna in accordance with future trends.
This article is divided into three parts. The first part discusses the use of a miniaturized NFC antenna. It has a size of 25 mm. The winding method, line width ad line distance are the best in the card reader. These should be combined and used in practice. The second part shows that the design space given in practice is gradually reduced, so the square antenna is transformed into a more slender rectangular antenna to meet product requirements.
The last part discusses how the antenna required by the product is too small, so the planar winding method can no longer meet the design requirements. But inspired by these two journal articles [7] [8], a new stacked winding antenna is designed and successfully solves this difficult challenge.
Keywords: Miniaturized, NFC, antenna design.

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