论文部分内容阅读
基于0.13μmCMOS技术设计了一个应用于无线传感网频率合成器、电源电压为0.5V的鉴频鉴相器.它的功能是比较输入信号的频率和相位差,并输出一个与该差值成比例的电压.因电源电压是0.5V,所以该电路采用低阈值晶体管.为了增大相位误差的检测范围和提高最大工作频率,该电路采用了脉冲锁存的结构.当输入信号频率为2MHz时,测得的相位误差检测范围为-358°～358°.与传统数字鉴频鉴相器相比,该电路具有较快的捕获速度.当输入信号的频率为2MHz且相位误差为0°时,电路的功耗为1.8μW,并且最大工作频率为1.25GHz.
Based on the 0.13μm CMOS technology, a phase-frequency detector designed for a wireless sensor network frequency synthesizer with a power supply voltage of 0.5V is designed to compare the frequency and phase difference of the input signal and output a Ratio of the voltage because the supply voltage is 0.5V, so the circuit uses low-threshold transistors.To increase the detection range of phase error and increase the maximum operating frequency, the circuit uses a pulse latch structure.When the input signal frequency is 2MHz , The measured phase error detection range of -358 ° ~ 358 °. Compared with the traditional digital phase frequency detector, the circuit has a faster capture speed when the input signal frequency of 2MHz and the phase error of 0 ° , The power consumption of the circuit is 1.8μW, and the maximum working frequency is 1.25GHz.