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| 研究生： |
張藼 Hsuan - Chang |
|---|---|
| 論文名稱： |
使用微波環形濾波器為基礎研製低相位雜訊振盪器 Development of Low Phase Noise Oscillators Based on Microwave Ring Filters |
| 指導教授： |
曾昭雄
Chao-hsiung Tseng |
| 口試委員: |
王蒼容
Chun-Long Wang 馬自莊 Tzyh-Ghuang Ma 陳士元 Shih-Yuan Chen |
| 學位類別： |
碩士 Master |
| 系所名稱： |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
| 論文出版年： | 2012 |
| 畢業學年度： | 100 |
| 語文別： | 中文 |
| 論文頁數： | 58 |
| 中文關鍵詞： | 環形濾波器 、振盪器 、壓控振盪器 |
| 外文關鍵詞： | ring filter, oscillator, voltage-controlled oscillator |
| 相關次數： | 點閱：376 下載：5 |
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本論文以環形濾波器作為迴授振盪器的迴路選頻元件，實現低相位雜訊之固定式與壓控式振盪器。論文中使用「複數品質因數」作為選擇振盪頻率之依據，以有效設計振盪器的相位雜訊效能。實驗證明可調濾波器能夠實現低相位雜訊之壓控振盪器，且間接說明本論文所提出之頻率選擇方式之有效性。以本論文介紹之選頻方法所製作的固定式振盪器相位雜訊於1 MHz偏移頻率可達到-132.2 dBc/Hz，採用「群相位峰值」設計方法之同型振盪器僅有-125.1 dBc/Hz。所研製之壓控振盪器在可調範圍內之相位雜訊皆可優於-110 dBc/Hz，可調頻寬為2.10 GHz~1.69 GHz (10%)。以上相位雜訊數據皆以偏移頻率1 MHz為基準。
In this thesis, the low phase-noise oscillators (OSCs) and voltage-controlled oscillators (VCOs) are developed using ring filter, which are treated as the frequency selective element of the feedback OSCs and VCOs. The “complex quality factor” is first introduced to designate the oscillation frequency of the OSC for the improvement of phase-noise performance. The experimental results in this thesis demonstrate that a tunable ring filter can realize a low phase-noise VCO. In addition, it also imply that the selection method of the oscillation frequency proposed in this thesis is effective. Based on the proposed method, the developed OSC has a -132.2 dBc/Hz. However, using” group delay peak” to select the oscillation frequency only achieves a -125.1 dBc/Hz phase noise. The developed VCO has phase noises better than -110 dBc/Hz over the entire tunable range from 2.10 GHz to 1.69 GHz (10%). The above-mentioned phase noises are all measured at the 1 MHz offset frequency.
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