S. Jang, Yun-Hsueh Chuang, Chien-Keng Lee, Shao-Hua Lee
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引用次数: 17
摘要
提出了一种4.8GHz低噪声正交Colpitts压控振荡器。使用电流开关差分科尔皮茨配置和超谐波耦合方案来产生正交信号，确保低相位噪声运行。从功耗、相位噪声和优值等方面分析了差分压控振荡器的优点。该QVCO采用0.18 m TSMC CMOS工艺制作，工作在4.8GHz频段，在1MHz偏置频率下，相位噪声为-120 dBc/Hz，电流消耗为7mA，功耗为12.6mW，电源为1.8V
A 4.8GHz low-noise quadrature Colpitts VCO is presented. Use of the current switching differential Colpitts configuration together with super harmonic coupling scheme for quadrature signal generation ensures low phase noise operation. The advantage of proposed differential VCO is analyzed in terms of power consumption, phase noise, and figure of merit. The QVCO has been fabricated with the 0.18-m TSMC CMOS technology for 4.8GHz band operation and the obtained phase noise is -120 dBc/Hz at 1MHz offset frequency while 7mA current consumption and 12.6mW power consumption from 1.8V power supply
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