一种新型低压低功耗伪差分环形压控振荡器设计

发布时间：2018-04-26 06:07

本文选题：伪差分 + 低压低功耗　；参考：《湖南大学学报(自然科学版)》2017年10期

【摘要】：基于交叉耦合技术提出了一种新型低压低功耗伪差分环形压控振荡器(VCO).电路整体包括新型伪差分环形压控振荡器、输出整形缓冲(buffer)电路两个部分.在VCO电路中采用了尾电流源控制的反相器为基本延时单元,实现了一种新型低压低功耗伪差分环形振荡器设计,并采用线性化技术改善调节线性度.利用输出buffer对VCO输出波形进行整形,消除了这种结构下输出摆幅受到尾电流源影响而不能达到轨到轨摆幅的限制.基于0.13μm标准CMOS工艺,利用cadence spectre进行仿真验证,前仿真结果表明在电源电压为1.2V时,该VCO相位噪声为-100.58dBc/Hz@1 MHz,功耗为0.92mW,在0.45~1V的电压范围内,频率调谐范围宽达0.303~1.63GHz,具有非常好的调节线性度,在电源电压为1V时仍然能正常工作.
[Abstract]:A novel low voltage low power pseudo differential ring voltage controlled oscillator (VCO) is proposed based on cross coupling technique. The whole circuit consists of a novel pseudo differential ring voltage controlled oscillator and an output shaping buffer buffer circuit. A novel low-voltage low-power pseudo-differential ring oscillator is designed by using the inverter controlled by the tail current source as the basic delay unit in the VCO circuit. The linearization technique is used to improve the adjusting linearity. Output buffer is used to shape the output waveform of VCO, which eliminates the limitation that the output swing is affected by the tail current source and cannot reach the rail to rail swing under this structure. Based on the 0.13 渭 m standard CMOS process, the cadence spectre is used to simulate and verify. The pre-simulation results show that the phase noise of the VCO is -100.58 dBc / Hz @ 1MHz, and the power consumption is 0.92mW, within the voltage range of 0.451V, when the power supply voltage is 1.2 V, the phase noise of the VCO is -100.58 dBcr / Hz @ 1MHz, and the power consumption is 0.92mW. The frequency tuning range is up to 0.303 Hz and 1.63 GHz. It has a very good adjusting linearity and can still work normally when the power supply voltage is 1 V.
【作者单位】：湖南大学物理与微电子科学学院;
【基金】：国家自然科学基金资助项目(61505051)~~
【分类号】：TN752

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