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本文综合介绍了一种以文献[1]为主的同轴结构高次倍频器的工程设计方法。其中有关同轴带通滤波器中心频率的设计方法,则是引用了文献[7]有关估计开路同轴线不连续电容的曲线,作为缩短电容中边缘电容的近似值。实验证明,这种引用是可行的。采用具有正温度系数的热敏电阻,构成简单的温度补偿网络,使高次信频器能在-40℃～+70℃的温度范围内稳定、可靠地工作。
In this paper, an engineering design method of high-frequency doubler with coaxial structure mainly based on literature [1] is introduced. The design method of the center frequency of the coaxial band-pass filter is based on the reference of [7] for estimating the discontinuous capacitance of the open coaxial line as an approximation of reducing the edge capacitance in the capacitor. Experiments show that this reference is feasible. The use of a positive temperature coefficient of the thermistor to form a simple temperature compensation network, so that high-frequency signal can be in the -40 ℃ ~ +70 ℃ temperature range stable and reliable work.