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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54910
標題: | 平面型指向波束賦形之天線設計 Designs of Planar Directive Beam-Shaping Antennas |
作者: | Huan-Chu Huang 黃奐衢 |
指導教授: | 許博文(Powen Hsu) |
關鍵字: | 平面型,指向,天線,GNSS,CMMB, planar,directive,antennas,GNSS,CMMB, |
出版年 : | 2015 |
學位: | 博士 |
摘要: | 本論文之主要貢獻乃是基於八木宇田 (Yagi-Uda) 之天線原型進行三種平面型指向波束賦形天線之創新設計,而此些設計的天線其可增強無線訊號接收強度,特別是(但不限於)對於無線導航定位應用如GPS或GNSS,抑或是中國移動(CMCC) S頻段的多媒體廣播 (CMMB) 的無線訊號傳輸應用。
如前述,文中所列的天線皆為平面型態設計,且皆為尾焰式 (end-fire) 的指向 (directive) 輻射場型,故對於日趨輕薄短小的無線行動通訊產品,如:智慧型手機、平板電腦、導航機、筆記型電腦等,乃至於是固定式的無線通訊設備,如:無線信號路由器、無線信號基地台,隧道/ 地下道無線信號放大器,或微波中繼站等,甚或是軍事用品與裝置,如雷達等,相較於以往習知的天線型式、種類,與設計,可有較佳的產品整合與應用優勢。 綜言之,本研究中所設計之天線具開創性思維而不侷限於傳統的寬邊輻射的天線設計構思,故本文中的天線如:平面尾焰式L1頻段的GNSS指向天線、縮小型平面尾焰式L1頻段的GNSS指向天線,與縮小型平面尾焰式L1頻段的GNSS及S頻段的CMMB雙頻指向天線,皆可達到低高度且高指向的輻射性能,故更有潛力符合現今主流與未來無線通訊產品發展的趨勢脈動。 In this research work, the main contribution is to design three kinds of innovative planar antennas based on the revisions of Yagi-Uda antennas to shape the directive radiation beams. These proposed antennas are able to enable the better signal reception levels, especially (but not limited) for the wireless navigation positioning applications, such as GPS (Global Positioning System) and GNSS (Global Navigation Satellite System), or CMMB’s (China Mobile Multimedia Broadcasting) S-band wireless transmission. As what it mentioned, the antennas proposed in this work are all based on the planar designs, and moreover, all of them are with the end-fire directive radiation patterns. As a result, for the slimmer and slimmer wireless mobile communication devices, such as the smartphones, table PCs, navigators, notebooks, for the fixed wireless communication units, such as wireless routers, wireless base stations, tunnel/ subway wireless signal boosters, and the microwave relays, and even for the military equipment, like Radars, the presented antennas have better advantages to be incorporated into the products and units compared with the conventional antenna types, kinds, and designs. In summary, the antennas in this research are with innovative ideas and not confined to the conventional design concepts of the broadside radiations. Consequently, all of the antennas proposed in this work, such as the planar end-fire directive antenna for the L1-band GNSS application, the miniaturized planar end-fire directive antenna for the L1-band GNSS application, and the miniaturized planar dual-band end-fire directive antenna for the L1-band GNSS and S-band CMMB applications, are able to achieve the low profiles and good directive radiations. Therefore, they are promisingly to match the development trends of the current main-stream and future wireless products better. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54910 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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