寬調整頻率之壓控振盪器與混合類別B/類別C之壓控振盪器

Wide-Tuning-Range VCO and Hybrid Class-B/Class-C VCO

王釋右(Shih-Yu Wang)

指導教授 ： 王多柏

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2013年)

摘要

論文的研究內容分為二個部分。第一部分為低電壓、低功耗、低相位雜訊、寬可調範圍壓控振盪器，使用台積電0.18-μm CMOS製作。在源極和汲極交叉耦合對終端使用類比調變變電容，和結合數位切換電容組來提升壓控振盪器的可調範圍。在交叉耦合對上方的電感是被利用來提升負電導和產生共振的寄生電容。在量測結果顯示，電壓操作在0.65 V時，壓控振盪器核心功耗2.99 mW。壓控振盪器頻率可調範圍由3.15 GHz到5.27 GHz，調變範圍為47.7 %。在振盪頻率為4GHz時偏移1 MHz所量測出來向為雜訊為-115.6 dBc/Hz。
第二部分為使用混合類別B類別/C 24GHz壓控振盪器，也是使用台積電0.18μm CMOS 製作。在壓控振盪器使用混合類別B和類別C，在類別C為提升輸出最大振幅，在類別B為確保壓控振盪器的啟動。在量測結果顯示，電壓操作在1.2 V時，壓控振盪器核心功耗5.4 mW。壓控振盪器頻率可調範圍由22.08 GHz到24.34 GHz，調變範圍為9.5 %。在振盪頻率為24.3 GHz時偏移1 MHz所量測出來向為雜訊為-104.2 dBc/Hz。

關鍵字

壓控振盪器 ； 寬可調範圍 ； 類別B ； 類別C

並列摘要

The thesis is divided into two sections. The first part is the low-voltage, low-power, low-phase-noise, wide-tuning-range VCO using TSMC 0.18-μm CMOS process. By using analog tuning varactors connected between the drain and source terminations of a cross-coupled pair, and they are combined with digital switching capacitor bank for boosting the VCO’s tuning range. Inductors are utilized on top of a cross-coupled pair for enhancing the negative conductance (-Gm) and resonate the parasitic capacitors. The measured results show, while operating at the supply voltage of 0.65 V, the VCO core consumes 2.99 mW. The VCO can tune the frequency range is from 3.15 GHz to 5.27 GHz. The measured phase noise is -115.6 dBc/Hz at 1-MHz offset from a 4.0-GHz oscillation frequency.
The second part is the 24 GHz VCO with Hybrid class-B/class C also using TSMC 0.18-μm CMOS process. In class-C, increasing the maximum amplitude of the output. In class-B, ensuring the start of the VCO. The measured results show, while operating at the supply voltage of 1.2 V, the VCO core consumes 5.4 mW. The VCO can tune the frequency range is from 22.08 GHz to 24.34 GHz. The measured phase noise is -104.2 dBc/Hz at 1-MHz offset from a 4.0-GHz oscillation frequency.

並列關鍵字

VCO ； Wide Tuning Range ； class-B ； class-C

參考文獻

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