SU416839A1 - - Google Patents

Description

one

The invention relates to a pulse technique and can be used in various radio engineering devices.

A frequency multiplier is known, comprising a metering pulse generator connected in series, an adder and a controlled oscillator, as well as a phase meter with two inputs and one output connected to a fine-tuning filter.

However, a known multiplier is characterized by an error of operation in a dynamic mode.

The aim of the invention is to improve the accuracy of the frequency multiplier.

For this, a matching circuit with two inputs is added to the frequency multiplier, one of which is connected to the connection point of the phase meter output with the fine tuning filter input, and the second input is connected to the output of the controlled oscillator, while the output of the additionally entered matching circuit is connected to the frequency splitter input .

FIG. 1 shows the block diagram of the multiplier; in fig. 2 - - time diagrams of 1m.

The frequency multiplier contains a metering pulse former 1, a coarse filter 2, a phase meter 3 with two inputs and one output, a fine tuning filter 4, an adder 5, a frequency divider b, a coincidence circuit 7, and a controlled oscillator 8. The metered pulse former 1, an adder 5 and the controlled generator 8 is connected in series with each other; One input of the phase meter 3 is connected to the input of the metering unit of the metered pulses 1, and the other to the frequency divider 6, the output of the phase meter 3 is connected to the fine-tuning filter 4. The coincidence circuit 7 is made with two inputs, one of which is connected to the connection point of the output of phase meter 3 with the input of the fine tuning filter, and the other with the output of the controlled generator 8, the output of the coincidence circuit is connected to the input of frequency divider 6.

The dead person works as follows.

The input pulse sequence (see Fig. 2a) with the following frequency / in enters the input of the metering pulse former 1 and the input of the phase meter 3. From the output of the metering pulse former 1 pulses of constant duration (see Fig. 2b) do not reach the filter 2 coarse tuning, the output of which removes the voltage proportional to the frequency of the input signal. This voltage through the adder 5 is fed to the input of the controlled generator 8 and changes its frequency in accordance with the modulation characteristic of the generator.

From the output of the controlled generator, pulses (see Fig. 2c) are fed to one of the entrances of the matching circuit 7, a from its output (see Fig. 2g) through frequency divider 6 with a division factor / BbTx / 2fEx to the second input of the phase meter 3

The output of the phase meter 3 is connected to the second input of the coincidence circuit 7, pulses are removed from its output (see Fig. 2e), the frequency spectrum of which does not contain a constant component if / o.

If, then the frequency spectrum of the oscillation contains a constant component of one sign, if, then the sign of the constant component of the frequency spectrum of the oscillations is reversed.

From the phase meter output, the error signal is fed to the fine tuning filter 4, the output of which removes the constant component of the error signal. The coincidence circuit 7, frequency divider 6, phase meter 3, and fine tuning filter 4 constitute the phase locked phase, which fine tunes the controlled oscillator.

Voltages from the outputs of the phase and frequency circuits of auto-tunings are fed to the sum - ““, -;

416839

Mat 5 and then to the input of the controlled generator.

Subject invention

Frequency multiplier, containing a sequencer of dosed pulses, adder

and a controlled generator, a phase meter with two inputs and one output that is connected to the fine tuning filter, one of the inputs of the phase meter is connected to the input of the metering unit of the measured impulses, and the other

the input is to a frequency divider, characterized in that, in order to improve the accuracy of the frequency multiplier, it additionally introduces a coincidence circuit with two inputs, one of which is connected to

the connection point of the output of the phase meter with the input of the fine-tuning filter, and the second input is connected to the output of the controlled oscillator, while the output of the additionally introduced matching circuit is connected to the input of the divider

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