英文翻译

Question

If base-10 logarithms are chosen [log10(10) = 1 decade], with
decibels in mind, the slope voltage, VSLP, can be viewed in terms of
“volts-per-decade” in the scaling of the log of the voltage ratio.
Since there are 20 decibels in a decade, the corresponding
“volts/dB” is just one-twentieth of this voltage. Thus, for a VSLP of
400 mV/decade, the slope can also be expressed as 20 mV/dB.
The second scaling parameter, called the “intercept,” VINT, is the
input voltage at which the log argument is unity. At this voltage,
independent of choice of base, the output would be zero, since
log(1) = 0. In practice, the finite available gain in an RF log amp,
the presence of noise, and other practical limitations result in a
value for VINT that is an extrapolated value, typically only a few
microvolts, and fixed by the design.
A question then arises as to the precise interpretation of what VINT
represents. Is this quantity “volts dc,” or perhaps “volts rms”? Or
is it some other metric, such as a simple average value, or the peak
value? For measurements of ratios from one level to another, the
value of VINT is unimportant. However, where it is required to
determine the absolute level of VSIG, the measurement accuracy
depends directly on the value of VINT in just the same way as a
reference voltage in, say, a DVM.
A close study of RF logarithmic amplifiers, which use the
technique1 known as “progressive compression,” shows another
effect not encountered in classical log amp practice, namely, that
the effective value of VINT strongly depends on the waveform of the
input signal. For that reason, we choose to define VINT for a
sinusoidal input, and then provide conversion factors for various
other waveforms.

Answer 1

如果基地转变成对数10都是选择[log10(10)=10年1],分贝一点,斜坡电压,VSLP,可以看作为"伏特-每-10年"的攀越的日志的电压比率. 自10年来有20分贝,相应的"伏特/德意志"只是二十分之一这个电压. 因此,为MVvslp400/10年来,山坡也可以表现为20MV/DB. 第二攀参数,被称为"堵截"Vint,输入电压,这是木是统一论调. 在这个电压、独立选择基地,产量将为零,因为日志(1)=0. 在实践中,取得了有限的可用以射频日志漕河泾高科技开发区,存在噪音等实际限制导致Vint价值,是价值推断,通常只有少数microvolts、固定的设计. 随之而来的问题是确切的解释是什么Vint. 这一数量是"伏区"或者"皇家伏"呢? 还是有些吨,如简单的平均值,或最高值. 测量的比率从层层的商品Vint不重要. 不过,如需要确定vsig绝对水平,直接取决于准确测量值Vint受到同样作为参考电压,可以说是DVM. 学习结束射频放大器方程,利用technique1称为"逐步压缩,"显示效果没有遇到一个古典木漕河泾高科技开发区的做法,即实际价值Vint大力依靠波形的输入信号. 基于这个原因,我们选择确定了Vint正弦波输入,然后再把各种因素转换
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Answer 2

如果基地转变成对数10都是选择[log10(10)=10年1],分贝一点,斜坡电压,VSLP,可以看作为"伏特-每-10年"的攀越的日志的电压比率. 自10年来有20分贝,相应的"伏特/德意志"只是二十分之一这个电压. 因此,为MVvslp400/10年来,山坡也可以表现为20MV/DB. 第二攀参数,被称为"堵截"Vint,输入电压,这是木是统一论调. 在这个电压、独立选择基地,产量将为零,因为日志(1)=0. 在实践中,取得了有限的可用以射频日志漕河泾高科技开发区,存在噪音等实际限制导致Vint价值,是价值推断,通常只有少数microvolts、固定的设计. 随之而来的问题是确切的解释是什么Vint. 这一数量是"伏区"或者"皇家伏"呢? 还是有些吨,如简单的平均值,或最高值. 测量的比率从层层的商品Vint不重要. 不过,如需要确定vsig绝对水平,直接取决于准确测量值Vint受到同样作为参考电压,可以说是DVM. 学习结束射频放大器方程,利用technique1称为"逐步压缩,"显示效果没有遇到一个古典木漕河泾高科技开发区的做法,即实际价值Vint大力依靠波形的输入信号. 基于这个原因,我们选择确定了Vint正弦波输入,然后再把各种因素转换