摘要(英) |
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. |
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