本論文針對毫米波頻段連接器和智慧型手機連接需求進行研究，提出了三款MCRF同軸連接器和一種內置於智慧型手機的MCX軟排線設計，以優化連接性能和解決內部走線佔用空間的問題。
第一部分中，介紹了一款名為NRF215的小型連接器，適用於無線通訊和高頻應用。這款連接器使用第二代高頻連接器和跳線，可實現最高15GHz的操作頻率。採用微型同軸結構和出色的性能，能使其成為無線設備中不可或缺的元件之一。
第二部分中，提出了一款第七代高頻連接器NRF715，可與多種線徑高頻低損纜線搭配使用。這款連接器操作頻率上可達到15GHz，適用於各項通訊設備和高頻傳輸。
第三部分提出了NRF728，為基於第七代母座並支援更高的頻寬需求而可達到28GHz。這款連接器可以對應毫米波傳輸的需求，並且適用於新型的5G通訊和雷達等應用。
第四部分中，為改善軟性印刷電路板損失較大與成本較高等缺點，提出了一種可用於智慧型手機內部的超薄MCX軟排線概念。設計了不同架構下極細的同軸線並組合成軟排線，並設計加入兩側FPC轉接板。此設計可以內置於智慧型手機，來解決內部走線所占用的空間限制，並且減少高頻傳輸連接損失。

This paper focuses on the research of connectors in the millimeter wave range and the connection requirements for smartphones. Three MCRF coaxial connectors and an MCX flexible flat cable design for smartphones are proposed to optimize the connection performance and address the issue of internal wiring space occupation.
In the first part, a small connector called NRF215 is introduced, which is suitable for wireless communication and high-frequency applications. This connector, using a second-generation high-frequency connector and cable, can achieve a maximum operating frequency of 15GHz. With its miniature coaxial structure and excellent performance, it becomes an essential component in wireless devices.
In the second part, the seventh-generation high-frequency connector NRF715 is presented, which can be used with various high-frequency low-loss cables. This connector can operate at frequencies up to 15GHz and is suitable for communication devices and high-frequency transmissions.
The third part introduces NRF728, which is based on the seventh-generation receptacle and supports higher bandwidth requirements, reaching 28GHz. This connector can meet the demand for millimeter wave transmission and is applicable to various new 5G communication and radar applications.
In the fourth part, a concept of ultra-thin MCX flexible flat cable is proposed for internal use in smartphones using a flexible printed circuit board design approach. Extremely fine coaxial lines are designed under different structures to form the flexible flat cables and incorporates FPC boards on both sides. This design can effectively be applied within smartphones while addressing the space limitations caused by internal wiring, allowing for greater flexibility of use and less high-frequency connection loss.
Keywords: high-frequency connector, millimeter wave connector, ultra-fine coaxial cable, flexible flat cable, flexible printed circuit board.

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