本研究提出一種平面結構的天線設計，針對天線面積淨空區域為15 mm × 65 mm以及手機尺寸規格為基本要求，以寄生耦合、分支以及蜿蜒曲線多段單極天線為結構，並且不需要使用三維空間設計規劃，使得天線可以在回波損耗低於 -6dB的要求下，覆蓋565~963MHz以及1751~2900MHz，亦即完整涵蓋LTE Band 28、Band 8、Band 1和Band 7所使用頻段，此設計使用低複雜的結構及低成本的元件，且不須使用穿孔接地，即可成功設計出應用於超寬頻傳輸之手機天線。

With the advent of the fifth generation of communication, high-capacity, compact and polishing mobile phones are the development goals. Under the trend of compactness and high screen-to-body ratio, the design space left for the antenna is gradually shrinking. However, the bandwidth requirements of the antenna are gradually increasing. This is a great challenge in antenna design. This study proposes a planar antenna, based on the size specification of the mobile phone with an antenna area clearance area of 15 mm × 65 mm, with parasitic branches and a small number of meandering curves as the structure, without using three-dimensional space. The antenna successfully covers 565~963MHz and 1751~2900MHz frequency bands, which completely cover the frequency bands used by LTE Band 71, Band 28, Band 8, Band 1, and Band 7. This design does not use overly complicated structures and high-cost components, and does not need to use through holes Grounding can be achieved.