摘要
设计了一种给单片毫米波集成电路(MMIC)中射频低噪声放大器(LNA)供电的电源模块。该电源模块集成在MMIC中并利用低压差线性稳压器(LDO)提供稳定的低噪声电源电压。由于传统LDO结构噪声较大,因此设计了一种电压预调节和RC低通滤波相结合的新型LDO结构来降低电路噪声,并针对RC低通滤波电路启动慢的缺点提出了一种快速启动的电路结构。利用SMIC 0.18μm CMOS工艺对电路进行设计和仿真测试,测试结果表明,输入电源电压5 V,输出电压在1~4.2 V范围内可调,电压输出线性调整率(LNR)为8.2 m V/V,负载调整率(LDR)为83.3μV/m A,输出噪声电压在1 k Hz^100 k Hz内的噪声积分为34.94μVrms,满足LNA的供电要求。
A power supply module is designed to supply RF low-noise amplifier（ LNA） which is integrated in monolithic microwave integrated circuit（ MMIC）. The power supply module integrated in MMIC and uses a low dropout regulator（ LDO） structure to produce a stable low noise voltage output. Due to the large noise of the traditional LDO structure, the circuit noise is reduced by the new structure combined with the voltage preconditioning and the RC low pass filter, and a fast start filter module is designed for the fil-ter circuit. The simulation results show that the input voltage is 5 V, the output voltage is adjustable in the range of 1 - 4. 2 V, the voltage output line regulation rate（ LNR） is 8. 2 m V/V, the load regulation rate（ LDR） is 83. 3 μV/m A, the output noise voltage in the range of 1 k Hz - 100 k Hz integration of 34. 94 μVrms, to meet the LNA power supply requirements.
作者
宋飞
蔡俊
李杨
王飞
Song Fei, Cai Jun, Li Yang, Wang Fei(School of Electrical and Information Engineering, Anhui University of Science And Technology, Huainan 232001, Chin)
出处
《电子技术应用》
2018年第5期29-32,共4页
Application of Electronic Technique
