【摘要】 分析了真对数放大器(TLA)的基本原理,对真对数放大器传输函数进行了数学推导,给出了一个70dB动态范围真对数放大器应用实例,从其噪声特性与灵敏度基线关系入手,分析了在增益不高的接收前端应用中真对数放大器对系统噪声的影响,指出了需要注意的问题。更多还原

【Abstract】 This paper analyzes the basic principle of true logarithm amplifier(TLA),performs the mathematic deduction to transmission function of TLA,gives an application example of TLA with70 dB dynamic range,starting from the relationship between the noise characteristic and sensitivity baseline,analyzes the influence of TLA on system noise in the application of receiver front-end with lower gain,points out the problems need to be noticed.更多还原