透過您的圖書館登入
IP:18.189.180.244
  • 學位論文

應用共平面波導於雙模雙方環型/圓環型諧振器之多頻與寬頻濾波器設計

CPW-fed Dual-mode Double Square-loop/Ring Resonators for Multi-band and Wide-band Filter Design

指導教授 : 桂清平
共同指導教授 : 劉智群(Ji-Chyun Liu)
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


本論文設計四組雙模雙方環型/圓環型濾波器,其中主要是使用共平面波導技術與雙模微擾源於多頻與寬頻之應用。這四組設計中,利用共平面波導雙T型饋入法,在雙方環型/圓環型諧振器可激發出雙頻、三頻、四頻與寬頻等響應。應用上,由兩個同心環決定響應頻率,最多可獲得0.9 GHz、1.2G Hz、1.8 GHz與2.4 GHz四個頻段,適用於全球行動通訊系統、無線影像安全連結與無線區域網路的通訊系統之中。 其中不對稱摺疊式共平面波導饋入雙模雙方環型結構具有四個帶通特性,其響應特性包含低介入損耗(2.52/ 1.93/ 1.06/ 0.76 dB),通帶頻寬外的高衰減特性(-45/ -51/ -38/ -32/ -35 dB),並在0.94 GHz、1.29 GHz、1.9 GHz與2.32 GHz四個頻段呈現對稱性的頻寬(3.6 %/ 6.2 %/ 13.9 %/ 16.1 %)。同時利用新型的高介電係數材料–AIN,設計串聯雙方環型諧振器,以產生寬頻響應特性,它的介入損耗低(0.97 dB),通帶頻寬外的高衰減特性(-35.4/ -34.6 dB),在中心頻率2.25 GHz並呈現對稱性的寬頻(43.22 %)。

關鍵字

雙模 雙環 帶通濾波器

並列摘要


Novel design of dual-mode double square-loop/ring resonators using CPW-fed and dual-mode perturbations are applied for multi-band and wide-band applications. In the design, using CPW-fed with twin-T structure coupling to DMDSLR/DMDRR for dual-band, tri-band, quad-band, and wide-band are proposed in this thesis. For practice, due to two concentric rings determine the certain resonated frequencies, we can get 0.9/ 1.2/ 1.8/ 2.4 GHz quad bands in all and it can be applies to GSM system, wireless video security links and Wireless LAN systems communication system. The quad-band be excited with asymmetric folded CPW-fed of DMDSLR. It exhibits a good performance including lower insertion loss (2.52/ 1.93/ 1.06/ 0.76 dB), higher out-of-band rejection level (-45/ -51/ -38/ -32/ -35 dB) and symmetry wider band (3.6 %/ 6.2 %/ 13.9 %/ 16.1 %) among 0.94/ 1.29/ 1.9/ 2.32 GHz quad bands respectively. In addition, we design the double square-loop on Aluminum Nitride (AIN) substrate, to have a wide-band bandpass response, with lower insertion loss (0.97 dB), deeper transmission zero level (35.4/ 34.6 dB) and wider bandwidth (43.22 %).

並列關鍵字

dual-mode double ring bandpass filter

參考文獻


1. K. Chang, Microwave Ring Circuits and Antennas, John Wiley & Sons, Inc., 1996.
2. D. M. Pozar, Microwave Engineering, John Wiley, Inc., 1998.
3. C. Nguyen, Analysis Methods for RF, Microwave, and Millimeter-Wave Planar Transmission Line Structures, John Wiley & Sons, Inc., 2000.
4. M. Makimoto and S. Yamashita, Microwave Resonators and Filters for Wireless Communication, Matsushita Research Institute Tokyo, Inc., 2001.
5. R. N. Simons, Coplanar Waveguide Circuits Components & Systems, John Wiley & Sons, Inc., 2001.

延伸閱讀