本篇論文提出了兩款適用於筆電金屬邊框環境的天線，可應用於 LTE 頻段，天線
架構簡單且容易製造，兩款天線皆為在未使用 LC 元件的情況下，達成良好的寬頻表
現，符合市場筆電天線設計的需求。
論文中的第一款天線為應用於筆電金屬邊框環境之 LTE 多頻立體式開槽孔天線，
天線尺寸為 83.2 × 10 × 6 mm3。天線主體為一個雙端路開槽孔的架構，可以貢獻一個
二分之一波長的基礎模態及其高階模態，並將饋線彎折 45 度使其與槽孔形成一單端
開路的結構，進而貢獻一個四分之一波長的模態，再藉由加粗饋線調整整體的阻抗匹
配，使其能夠大致涵蓋 LTE 高頻段及 5G FR1 的頻段。本架構利用與邊框以及 C 件共
構的方式，可以有效節省筆電內部的空間配置，也因未使用主動元件，故較不容易受
高頻訊號影響。
論文提出的第二款天線同樣為應用於筆電金屬邊框環境之 LTE 多頻立體式開槽
孔天線的設計，總體天線尺寸為 80 × 6 × 6 mm3。天線主體為一個單端路開槽孔的架
構，並且擁有兩段的切換機制，第一次的切換係藉由射頻開關來達到較大頻段的轉換，
使其基本模態與高階模態能夠大致涵蓋 LTE 低、高頻段以及 N77 的頻段範圍，第二
次切換的機制則是提出一個具創新性的天線負載結構，利用調整液態負載的溫度來改
變其相對介電係數，進而達到頻段重置的效果，以去涵蓋餘下的 LTE 低頻頻段。

This thesis proposes two antenna designs that are suitable for the metal frame
environment of laptops.The applicable operation bands are LTE bands. The antenna structure is simple and easy to fabricate.Both antennas have good bandwidth performance without using lumped elements, which meets the commercial product need.
The first antenna is an LTE multi-band open slot antenna for laptops with metal
frames.The antenna sizes are of 31 × 10 × 6 mm3. The antenna configuration is a dual-end open slot, which has a half-wavelength fundamental mode and higher-order modes. The feed line is bent by 45 degrees to form a single-ended open slot, which contributes a quarterwavelength mode. By adjusting the impedance matching of the antenna with a widened feed line, it covers the LTE High-Band and 5G FR1 band. This structure can be integrated with the frame and the laptop base, which can effectively save the required antenna volumn and is less susceptible to interference due to not using active components.The second antenna proposed is also dedicated to LTE bands.It’s in a 3D configuration and is applicable to laptop’s metal frame. The overall antenna sizes are 80 × 6 × 6 mm3. The main body of the antenna is a single-ended slot and has a two-stage frequency reconfiguring mechanism. The first method is using an RF switch to achieve a greater frequency adjustment so that its basic mode and high-order mode can roughly cover the frequency ranges of LTE and N77 bands.The second adjusting mechanism is applying a temperature-sensitive dielectric loading.By changing the liquid loading temperature, the effective relative permittivity is varied so that the frequency band can be modified to cover the remaining LTE low bands.

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