| 摘要: | 本論文提出應用於LTE與5G之攜帶式裝置多頻段天線設計，以及操作於5G之多頻段天線。設計為求普及性，其空間與尺寸參考蘋果手機IPHONE11。
第一隻天線操作於LTE頻段Band1、3、5、13、14、20、38 (1920~2170MHz、1710~1880MHz、824~894MHz、746~787MHz、758~798MHz、791~862MHz、2570~2620MHz)以及5G頻段N46、N47、N79 (5150~5925MHz、5855~5925MHz、4400~5000MHz)，其設計方法透過與接地面積的距離耦合，以及在迴路上做延伸的方式產生共振，可操作於低中高三頻帶。
第二支天線操作於N41、N71、N77、N78、N79（2496~2690MHz、617~698MHz、3300~4200MHz、3300~3800MHz、4400~5000MHz），其設計方式是透過在迴路上增加一路徑與低頻路徑相互耦合，產生中高模態，再由饋入端旁，產生一結構，優化阻抗匹配性。
本論文提出的兩隻天線在設計上都有良好的輻射表現，整體輻射效率42%~79%，在設計上皆保有輕薄短小之特性，可應用於現行的無線通訊產業中。
;This thesis proposes designs of multi-band antennas for LTE and 5G mobile devices, and 5G multi-band antennas. For popularity, the size and space follow APPLE Cellphone-IPHONE11.
The first antenna is used in LTE frequency Band1, 3, 5, 13, 14, 20, 38 (1920~2170MHz, 1710~1880MHz, 824~894MHz, 746~787MHz, 758~798 MHz, 791~862MHz, 2570~2620MHz) and 5G frequency band N46, N47, N79 (5150~5925MHz, 5855~5925MHz, 4400~5000MHz). The design method is coupled with the distance from the grounding area. In addition, it has resonance by extending traces in the antenna loop.
The second antenna is used in 5G band N41, N71, N77, N78, N79 (2496~2690MHz, 617~698MHz, 3300~4200MHz, 3300~3800MHz, 4400 ~5000MHz). The design method is to add a path in antenna trace to couple with the low-frequency path. It produces some middle to high band resonances. A structure is inserted between feedings to optimize impedance matching.
This thesis proposes two antennas have good performance, the overall radiation efficiency is 42%~79%. Both of antennas are short and small, it widely used in current wireless communication industry. |
