An Active Inductor-Based VCO With Wide Tuning Range and High DC-to-RF Power Efficiency
An Active Inductor-Based VCO With Wide Tuning Range and High DC-to-RF Power Efficiency
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基于有源电感器的 VCO，具有宽调谐范围和高 DC 至 RF 功率效率
DOI：
10.1109/tcsii.2011.2158713
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Guican Chen
中科院分区：
文献类型：
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作者：
Jiangtao Xu;C. Saavedra;Guican Chen
采用标准 0.13μm CMOS 工艺设计和制造了一种具有宽频率调谐范围的有源电感压控振荡器 (VCO)。该振荡器采用带有交叉耦合晶体管的 LC 储能电路拓扑，有源电感器是使用一对全差分超高速运算跨导放大器实现的。由于电感器的差分性质，输出信号的偶次谐波大大减少。测量结果表明，VCO 的调谐范围为 833 MHz 至 3.72 GHz，调谐范围为 127%。 VCO 可产生 -0.9 dBm 的射频功率。核心电路（不包括输出缓冲器）在 1.2V 电源下消耗 13mW 的功率。
An active inductor-based voltage-controlled oscillator (VCO) with a wide frequency tuning range was designed and fabricated using a standard 0.13-μm CMOS process. The oscillator has an LC-tank topology with cross-coupled transistors, and the active inductor was realized using a pair of fully differential very high-speed operational transconductance amplifiers. Due to the differential nature of the inductor, the even harmonics of the output signal were much reduced. Measured results show that the VCO is tunable from 833 MHz to 3.72 GHz, representing a tuning range of 127%. The VCO can produce -0.9 dBm of radio-frequency power. The core circuit, excluding output buffers, consumes 13 mW from a 1.2-V supply.