压控振荡器
相位噪声
CMOS芯片
偏移量(计算机科学)
测距
电气工程
计算机科学
拓扑(电路)
电子工程
电压
工程类
电信
程序设计语言
作者
Jiao Lin,Yeung Bun Choi,Wooi Gan Yeoh
标识
DOI:10.1109/rfic.2007.380979
摘要
In this paper, we present a fully integrated 5.8-GHz LC voltage controlled oscillator (VCO) featuring over 300MHz tuning range while retaining the VCO gain (K VCO ) to as low as 45MHz/V A modified frequency-tuning topology employing accumulation-mode MOS varactors (AMOS) with virtual ground node bandswitching was adopted to set the appropriate operating frequency and to program K VCO to a necessary minimum. Realized in 0.13μm CMOS technology, the VCO obtains an adjustable gain ranging from 45MHz/V to 106MHz/V in 20MHz/V-step. With mimimum K VCO , phase noise improves by 6dB and goes down to -115dBc/Hz at 1MHz offset away from 5.98GHz carrier while dissipating merely 12.5mW dc power.
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