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首页> 外文期刊>Electrical Engineers - Part III: Radio and Communication Engineering, Journal of the Institution of >Bandwidth and speed of build-up as performance criteria for pulse and television amplifiers
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Bandwidth and speed of build-up as performance criteria for pulse and television amplifiers

机译：带宽和建立速度是脉冲和电视放大器的性能标准

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摘要

A comparison is made of the two main methods of describing the performance of pulse and television amplifiers, namely bandwidth, and speed of build-up of a suddenly-applied signal. It is shown for a variety of circuit arrangements (including asymmetrical circuits) that equal speeds of build-up based on the slope of the build-up curve at half the steady-state amplitude correspond fairly closely to equal bandwidths measured between the points at which the response is 3 db below that at the applied frequency. It is therefore concluded that either of these criteria would be satisfactory in practice, since they are mutually consistent. Other methods of defining the speed of build-up are discussed, and the main inconsistency is shown to be that, for only one or two stages, but not for larger numbers, the use of the maximum slope of the build-up curve gives misleading results. The problems of humps in the attenuation/frequency response and overshoot in the transient response are only briefly discussed, owing to the difficulty of assessing quantitatively their importance as performance criteria. A few other design factors, especially adjacent-channel interference suppression, are briefly considered in relation to the main discussion.
机译：比较了两种描述脉冲和电视放大器性能的主要方法，即带宽和突然施加信号的建立速度。对于各种电路装置（包括非对称电路），显示出基于累积曲线的斜率在稳态振幅一半时的累积速度相等，相当接近于在两个点之间测得的相等带宽响应比应用频率下的响应低3 db。因此得出的结论是，这些标准中的任何一个在实践中都是令人满意的，因为它们是相互一致的。讨论了定义堆积速度的其他方法，并且显示出主要的矛盾之处在于，仅对于一个或两个阶段，但对于较大的数量而言，使用堆积曲线的最大斜率会产生误导结果。由于难以定量评估其作为性能标准的重要性，因此仅简要讨论了衰减/频率响应中的驼峰问题和瞬态响应中的过冲问题。在主要讨论中，简要考虑了一些其他设计因素，尤其是相邻信道干扰抑制。

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