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研究生:陳暐翔
研究生(外文):Chen Wei-Xiang
論文名稱:5 GHz頻段之複合式右手/左手波束掃描漏波天線
論文名稱(外文):Composite Right/Left-Handed Beam-Steering Leaky-Wave Antenna for 5GHz Band
指導教授:鄭瑞清
口試委員:鄧聖明丘增杰金國生
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電子工程系研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
畢業學年度:104
中文關鍵詞:複合式右手左手、波束掃描、漏波
外文關鍵詞:Composite right-/left- handed (CRLH)leaky-wave (LW)Beam-steering
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本篇論文提出在5 GHz頻段上的複合式右手左手波束掃描漏波天線。所提出的架構是基於傳輸線理論的右手性物質,並結合左手性物質而完成複合式右手左手的特性。其中,右手性物質的等效電路為串聯電感及並聯電容由傳統傳輸線實現,左手性物質的等效電路為串聯電容及並聯電感,利用金屬-絕緣體-金屬架構及四分之一波長阻抗轉換實現。再加入變容二極體於並聯電感及串聯電容中,使左手的性質可經由變容二極體偏壓而改變,進而使整體天線的電流相位變化,達到波束掃瞄的目的。最後完成操作在5.8 GHz的複合式右手左手漏波天線的設計和實做,受限於變容二極體的可調範圍,量測結果顯示波束掃瞄範達到50度。
This thesis presents a composite right-/left-handed(CRLH) beam-steering leaky-wave (LW) antenna for 5 GHz Band. The proposed structure is based on right-handed (RH) material transmission line and combines with left-handed (LH) material to achieve CRLH characteristics. The RH equivalent circuit implemented by traditional transmission line contains series inductance and shunt capacitance. By using metal-insulator-metal structures and quarter-wave transformers, the LH equivalent circuit which contains series capacitance and shunt inductance is implemented. Varactors are added to the series capacitors and parallel inductors such that the left-handed property can be change by the bias voltage of the varactors, which results in the change of the phase of the current distribution on the antenna, achieving the goal of beam-steering. Finally, a CRLH LW antenna operated at 5.8 GHz is design and fabricated. Due to the limited tuning range of the varactors, the measured beam-steering range is 50 degrees.
中文摘要 i
英文摘要 ii
誌謝 iv
目錄 v
表目錄 vii
圖目錄 viii
第一章 序論 1
1.1 前言 1
1.2 研究動機 2
1.3 研究目的 3
1.4 章節概要 5
第二章 複合式右手/左手傳輸線架構原理 6
2.1 前言 6
2.2 左手系物質 6
2.3複合式右手左手傳輸線原理 9
2.4 平衡與非平衡共振 13
第三章 單元複合式右手/左手傳輸線結構 17
3.1 前言 17
3.2 集總元件LC疊接複合式右手左手傳輸線 17
3.3 金屬-絕緣-金屬(MIM)結構之單元複合式傳輸線 23
3.3.1 設計流程 25
3.3.1 MIM結構 25
3.3.2 MIM結構合成左手系之並聯電感 27
3.4 壓控式平衡型態MIM複合式右手左手傳輸線 46
3.4.1 改良式饋入微帶線 46
3.4.2 TRL校正 48
3.4.3 變容二極體參數萃取 51
3.4.4 單元平衡MIM複合式右手左手傳輸線加載變容二極體 53
第四章 複合式右手/左手波束掃描漏波天線 65
4.1 前言 65
4.2 模擬與量測 67
4.3 單位個數之損耗、增益及相位差 82
4.4 模擬與量測誤差檢討 86
第五章 總結 91
5.1 結論 91
5.2 未來展望及檢討 92
參考文獻 93
附錄 96
一 Linear Regression Matlab code 96
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