臺灣大學: 電信工程學研究所鄭士康王紹偉Wang, Shao-WeiShao-WeiWang2013-03-272018-07-052013-03-272018-07-052010http://ntur.lib.ntu.edu.tw//handle/246246/253300隨著WiMAX行動通訊協定的崛起，各種手持通訊裝置的需求也越來越多，多頻帶天線跟著應運而生。且各種手持通訊裝置的體積日趨小型化、薄型化，使得天線設計也越加困難、複雜。本論文的主要目標在利用螺旋形單極天線及平面式倒F型天線兩種不同的物理架構以達到多頻帶操作的特性，並藉由微帶線偏移饋入的方式，使其高低頻的頻帶可相互彌補不足之處，且操作頻段與阻抗匹配可分別藉由螺旋天線與平面式倒F型天線各自的設計參數做調整。With the WiMAX (Worldwide Interoperability for Microwave Access) protocol springing up, the mobile device demand are getting more and more, and multi-band antennas emerge. Designing antenna becomes harder because mobile devices are getting smaller and thinner. This thesis focuses on multi-band manipulation by using spiral-shaped monopole for high-frequency band and planar inverted-F antenna (PIFA) for low-frequency band, and feeding them with an offset microstrip line to make the characteristics in high and low frequency bands can be adjusted almost independently.3466358 bytesapplication/pdfen-US行動通訊網路平面式倒F型天線多頻天線印刷電路板天線PIFA(Planer Inverted-F Antenna)multi-band antennasprinted antennasthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/253300/1/ntu-99-R97942081-1.pdf