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An analysis of two-point tracking in superheterodyne receivers

机译：超外差接收机的两点跟踪分析

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摘要

This paper presents an analysis of two-point tracking, a special case of the well-known solution to the superheterodyne tracking problem which was presented by Sowerby in 1932. A number of design problems are considered in order to show that the two-point solution is satisfactory provided that the minimum signal frequency is much greater than the intermediate frequency, a condition which is, for example, satisfied by a tuner for the v.h.f. band with the usual intermediate frequency of 10.7 MHz.
机译：本文对两点跟踪进行了分析，这是Sowerby在1932年提出的解决超外差跟踪问题的著名方法的特例。为了说明两点解决方案，考虑了许多设计问题如果最小信号频率远大于中频，则该信号是令人满意的，例如，对于vhf，调谐器可以满足该条件通常中频为10.7 MHz的频段。

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