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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Analysis and design of a 1.8-GHz CMOS LC quadrature VCO
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Analysis and design of a 1.8-GHz CMOS LC quadrature VCO

机译:1.8 GHz CMOS LC正交VCO的分析和设计

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This paper presents a quadrature voltage-controlled oscillator (QVCO) based on the coupling of two LC-tank VCOs. A simplified theoretical analysis for the oscillation frequency and phase noise displayed by the QVCO in the 1/f/sup 3/ region is developed, and good agreement is found between theory and simulation results. A prototype for the QVCO was implemented in a 0.35-/spl mu/m CMOS process with three standard metal layers. The QVCO could be tuned between 1.64 and 1.97 GHz, and showed a phase noise of -140 dBc/Hz or less across the tuning range at a 3-MHz offset frequency from the carrier, for a current consumption of 25 mA from a 2-V power supply. The equivalent phase error between I and Q signals was at most 0.25/spl deg/.
机译:本文介绍了基于两个LC储罐VCO耦合的正交压控振荡器(QVCO)。对QVCO在1 / f / sup 3 /区域显示的振荡频率和相位噪声进行了简化的理论分析,并在理论和仿真结果之间找到了很好的一致性。 QVCO的原型是在0.35 / spl mu / m CMOS工艺中使用三个标准金属层实现的。 QVCO可以在1.64和1.97 GHz之间进行调谐,并且在整个调谐范围内,在相对于载波的偏移频率为3 MHz的情况下,相位噪声为-140 dBc / Hz或更小,而从2到2的功耗为25 mA。 V电源。 I和Q信号之间的等效相位误差最大为0.25 / spl deg /。

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