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本文所叙述的频率综合器采用了由单频率石英晶体振荡器导来的标准频率与由LC可变频率主振器产生的频率作相位比较,而后用电抗管来校正,使LC主振器的频率具有与石英晶体振荡器相同的相对频率稳定度,作为发射机的主振频率来使用。本频率综合器可适用于短波波段,例如从2到27兆赫范围,每隔1千赫开出一个频率,共可开出25,000个独立频率。由图1可见,本频率综合器的组成部分为:(1)100千赫石英晶体标准振荡器,(2)分一百次的固定牵引同步分类器,(3)脉冲销定振荡器,(4)混频器,(5)从1到1000千赫的带通放大器,(6)用脉冲计数技术的从1到1000次的可变分频器,(7)鉴相器;(8)
The frequency synthesizer described in this paper uses a standard frequency from a single-frequency quartz crystal oscillator and the frequency generated by the LC variable frequency main oscillator for phase comparison, and then use the reactance tube to correct, so that the LC main oscillator Has the same relative frequency stability as the quartz crystal oscillator and is used as the main oscillation frequency of the transmitter. The frequency synthesizer is suitable for use in shortwave bands, for example from 2 to 27 MHz with a frequency of 1 kHz and a total of 25,000 independent frequencies. It can be seen from Figure 1, the frequency synthesizer components: (1) 100 kHz quartz crystal oscillator standard, (2) one hundred times the fixed traction synchronization classifier, (3) pulse pin oscillator, ( 4) mixers, (5) bandpass amplifiers from 1 to 1000 kHz, (6) variable dividers from 1 to 1000 using pulse counting techniques, (7) phase detectors, (8)