SU545063A1 - Standard frequency grid former with quartz frequency stabilization - Google Patents

Description

The shaper contains a controlled oscillator 1, whose frequency fo is measured in the working range using tuning mechanism 2, a frequency generator 3, whose frequency / 2 switches through i-intervals (Af) with a reference oscillator 4 with quartz frequency stabilization frequency multiplier 5, mixers 6 , 7, 8, filters 9, 10, 11, frequency discriminator 12, tuned to frequency / j; phase discriminator 13.

Works proposed shaper grid standard particles as follows.

Since filter 9 is tuned to a frequency f equal to the sum of / o + / 2, the equality of the frequency of the output signal of this filter to the frequency f4, the output voltage on the discriminator 12 will be zero, and if these frequencies are unequal, i.e. when + fz , it will be different from zero with the magnitude, which is determined by its inequality.

The combination of the above functional blocks 2, 3, 6, 9 and 12 forms a closed price of a discrete change in the frequency / o of generator 1 at intervals (A /) due to the switched frequency / 2 of generator 3 at the same intervals. Since the filter 10 is set to the total frequency / 2 +, where t / s is the harmonic frequency of the oscillator 4, and the filter 11 is tuned to the frequency difference / o-t / s, thanks to the fx settings of these filters, the frequency change / 2 and / o will affect the magnitude of the differential frequency / o-t / s, which will be automatically compensated for by changing the number of harmonics t / 3 using the filter 11. The output voltage of the filter 11 is fed to the phase discriminator 13, to the second input of which is also supplied the multiplier signal 5, thereby discarding rigid synchronization of the controlled generator 1 in phase. Thus, the proposed shaper provides for an even frequency stabilization in the infocom dynamic range.

F o rmu l invention

A standard frequency grid former with quartz frequency stabilization, containing an adjustable oscillator, the output of which is connected to the input of the first mixer, another mixer input connected to the output of the frequency grid generator controlled by the reference generator, another output of the grid generator and the connection to one of the second mixer inputs, to to the other entrance which through

Another frequency generator is connected to the frequency cleverly, the second multiplier output is connected to one of the inputs of the phase dnsmnator that controls the frequency of the oscillating oscillator, and the output of the nerve slmgl through the filter is connected to the third mixer n to the input of the master control unit. , characterized in that, with the aim of expanding the working frequency range, it is equipped with an additional side frequency compensator of the frequency system and frequency transducers, for example, in the form of This filter tuned to a frequency equal to the grid frequency generator su.mme and etaloinogo oscillator frequencies off between the output of the second mixer input of the third n vtory.m s.mesntel, and the difference of the output frequency and reference frequency generator vklyucheinogo between the mixer and treti.m

the second input of the phase discriminator.