應用扇形槽孔/Ω型結構微擾技術於雙模雙環諧振器之微型化設計

Dual-mode Double-ring Resonators with Radial-slot /Ω-shaped Perturbations for Miniaturizations

劉大成(Ta-Cheng Liu)

指導教授 ： 劉智群

健行科技大學/電資學院/電腦通訊與系統工程研究所/碩士(2009年)

https://doi.org/10.6824/UCH.2009.00021

摘要

本論文以兩種降頻微型化技術，一是電容性扇形槽孔微擾，二是電感性Ω型結構微擾，應用於雙模環型與雙模雙環諧振器。經由微擾作用與調整匹配，達到單頻及雙頻段降頻作用。
經由電流分佈及頻率響應探討，其中扇形微擾於雙模雙環型諧振器，獲得中心頻率為1.40 / 2.12 GHz，可達到微型化百分比為30 / 10%，比例頻寬為5.26 / 17.57%，介入損耗為-2.14 / -1.18 dB，以及通帶外的衰減特性為-42.02 dB。其次Ω型結構微擾於雙環型，得到中心頻率為1.13 / 2.11 GHz，可達到微型化百分比為56 / 10%，比例頻寬為4.82/16.45%，介入損耗為-2.49 / -0.75 dB，與通帶外衰減特性為-19.93 dB。最後，於相同工作頻段的條件下，分析單環與雙環型濾波器之響應特性，保持微型化百分比都為31%，單環型結構之頻寬百分比，扇形微擾為6.89%，Ω型結構微擾為5.95%；衰減特性，扇形微擾為-33.36 / -44.39 dB，Ω型結構微擾為-33.63 / -53.21 dB。雙環型結構之頻寬百分比，扇形微擾為8.65%，Ω型結構微擾為7.5%；衰減特性，扇形微擾為-24.59 / -41.08 dB，Ω型結構微擾為-24.25 / -20.04 dB。

關鍵字

雙模 ； 雙環 ； 帶通濾波器 ； 微型化

並列摘要

Two kinds of miniaturizations techniques with frequency reductive are studied in this thesis. The first one is capacitance radial-slot perturbations, and the second one is inductive Ω-shaped perturbations, both techniques are applied for the dual-mode ring and the dual-mode double-ring resonators respectively. By the perturbations and matching techniques, the single band and dual band reduction for miniaturizations are achieve.
Results including surface current distributions and frequency responses are presented and discussed. First, the dual-mode double-ring resonators with radial-slot perturbations are proposed. The significant size reductions over 30 / 10 % are achieved at dual-band 1.40 / 2.12 GHz respectively. The lower insertion loss -2.14 / -1.18 dB, the higher rejection -42.02 dB and the wider bandwidth about 5.26 / 17.57% responses are presented. Second, dual-mode double-ring resonators with Ω-shaped perturbations are presented, the significant size reductions over 56 / 10% are obtainey at dual-band 1.13 / 2.11 GHz respectively. The lower insertion loss -2.49 / -0.75 dB, the higher rejection -19.93 dB and the wider bandwidth about 4.82/16.45% responses are presented. Finally, based on an identical band and keeping 31% size reductions, the frequency responses of the single-ring and double-ring are analyze. The single-ring of radial-slot and Ω-shaped are with wider bandwidth 6.89% and 5.95% and deeper rejection level -33.36 / -44.39 dB and -33.63 / -53.21 dB respectively. The double-ring of radial-slot and Ω-shaped are with wider bandwidth 8.65% and 7.5% and deeper rejection level -24.59 / -41.08 dB and 24.25 / -20.04 dB.

並列關鍵字

dual-mode ； double ring ； band-pass filter ； miniaturizations

參考文獻

參考文獻

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