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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31719
標題: | 近橫向電磁合成傳輸線設計與應用 Design and Application of Synthetic Quasi-TEM Lines |
作者: | Sen Wang 王紳 |
指導教授: | 莊晴光(Ching Kuang Tzuang) |
關鍵字: | 傳輸線,合成波導, Transmission Line, |
出版年 : | 2006 |
學位: | 碩士 |
摘要: | 在本論文中,提出一種新型合成傳輸線。此種二維傳輸線係由介質基板及上、下兩層互補式的金屬圖案所構成,這種合成傳輸線能提供我們所需要的電氣特性。比較此合成傳輸線與傳統微帶線的電氣特性,在不改變上層金屬的寬度下,不論是在理論值或實際量測值上,此合成傳輸線的特徵阻抗比傳統微帶線高出130%,且慢波係數也比物理上的理論值高出17.7%。
利用上述的合成傳輸線設計一個Ka-band的rat-race hybrid,與傳統rat-race hybrid相比,有三大優點 : 1) 這個hybrid有相當好的隔離度 2) 很小的反射損耗 3) 面積小。這個利用二維合成傳輸線排列的hybrid面積,不包括pad的話,只有600 x 460 um2。 最後,提出一個X-band結合交越耦合與利用合成傳輸線型式電感之壓控振盪器,使用0.18微米CMOS製程。此壓控振盪器的面積僅有470 x 510 um2,其10.2GHz在1 MHz位移相位雜訊為 -107 dBc/Hz。 In this thesis, a new synthetic quasi-TEM (Transverse Electromagnetic) transmission line (TL) is presented. The proposed synthetic TL consists of a two-dimensional array made of complementary-conducting strips (CCS) unit cell, which permits tuning for desired propagation characteristics of the transmission line under synthesis. Based on the particular case study, both theoretical and measured results agree excellently for the comparative studies for the proposed synthetic TL and the conventional microstrip. The Zc of a synthetic TL is 130% higher than that of a wide microstrip. Furthermore, the extracted slow-wave-factor is 17.7% higher than the physical limit of microstrip. In addition, a Ka-band CMOS rat-race hybrid using the synthetic quasi- TEM TL is proposed. Comparing with the conventional rat-race hybrid, the synthetic TL-based rat-race hybrid features 1) good isolation, 2) reflection loss, and 3) a compact structure. This hybrid incorporates two-dimensional (2D) meandering CCS TL whose size is only 600 x 460 um2 excluding RF pads. Finally, an X-band VCO combining cross-coupled pair and CCS-TL based inductors topology is proposed. The circuit is fabricated by 0.18- |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31719 |
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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