Automatic amplitude control loop for a 2-V, 2.5-GHz LC-tank VCO

Proceedings of the IEEE 2001 Custom Integrated Circuits Conference (Cat. No.01CH37169) Pub Date : 2001-05-09 DOI:10.1109/CICC.2001.929757

A. Zanchi, A. Bonfanti, S. Levantino, C. Samori, A. Lacaita

引用次数: 6

Abstract

The paper discusses the design of the automatic amplitude control circuit (AAC) for wireless-targeted oscillators, presenting a 2-V, 2.5-GHz LC-tank bipolar VCO. Potential phase noise degradation due to the amplitude loop is illustrated, along with design choices to avoid this effect. The circuit manufactured draws 7 mA in the VCO and less than 600 μA in the AAC, with SSCR=-104 dBc/Hz@100 kHz. Once normalized for power, Q-factor and operating frequency, this phase noise performance ranks first among the bipolar VCOs published so far.

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用于2v, 2.5 ghz LC-tank VCO的自动幅度控制回路

本文讨论了无线目标振荡器的自动幅度控制电路(AAC)的设计，提出了一种2v, 2.5 ghz LC-tank双极压控振荡器。由于幅度环的潜在相位噪声退化被说明，以及设计选择，以避免这种影响。该电路的压控电压为7ma, AAC电压小于600 μA, SSCR=-104 dBc/Hz@100 kHz。一旦对功率、q因子和工作频率进行归一化，该相位噪声性能在目前发表的双极压控振荡器中排名第一。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the IEEE 2001 Custom Integrated Circuits Conference (Cat. No.01CH37169)

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