This paper presents a new type of low noise frequency conversion circuit based on the research of phase noise conception, generation as well as relativity measurement method.
本文在对相位噪声的概念、产生及其相关测量方法研究的基础上，设计出一种低噪声频率变换电路。
The power supply module provides the control circuit, the drive of frequency conversion circuit, transaction circuit and DSP with different power supply.
电源模块为系统控制电路、变频驱动电路、变送电路、DSP芯片提供不同要求的电源。
The principle of Thermistor-frequency conversion circuit used in temperature measurements is introduced in this paper.
本文介绍一种测温用的热敏电阻频率转换电路的工作原理。
Based on the speciality of transistors non-linearity, using maths method, this article analyses the cause of whistle of frequency conversion circuit and provides method to eliminate.
本文根据晶体管非线性元件的特点，利用数学推导方法，从基础上分析了变频工作啸叫的原因，并提出了消除方法。
Based on the speciality of transistors non-linearity, using maths method, this article analyses the cause of whistle of frequency conversion circuit and provides method to eliminate.
本文根据晶体管非线性元件的特点，利用数学推导方法，从基础上分析了变频工作啸叫的原因，并提出了消除方法。
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