SU834824A1

SU834824A1 - Pulse repetition frequency multiplier

Info

Publication number: SU834824A1
Application number: SU792810589A
Authority: SU
Inventors: Эдуард Петрович Лонч; Владимир Яковлевич Середкин; Вадим Александрович Разумовский; Юрий Иванович Кусок
Original assignee: Предприятие П/Я М-5308
Priority date: 1979-08-06
Filing date: 1979-08-06
Publication date: 1981-05-30

Description

(54) УМНОЖИТЕЛЬ ЧАСТОТЫ СЛЕДОВАНИЯ ИМПУЛЬСОВ(54) MULTIPLE OF FREQUENCY FOLLOWING PULSES

II

Изобретение относитс к импульсной технике и может быть использовано в синтезаторах , измерител х частоты, синхронизаторах и других устройствах дл умножени частоты следовани периодических импульсов в целое число раз.The invention relates to a pulse technique and can be used in synthesizers, frequency meters, synchronizers, and other devices to multiply the frequency of a periodic pulse in a whole number of times.

Известен умножитель частоты следовани импульсов, содержащий делитель опорной частоты, счетчики импульсов, запоминающий блок, элемент сравнени , линию задержки и элемент ИЛИ 1.A pulse multiplying frequency multiplier is known, comprising a reference frequency divider, pulse counters, a storage unit, a comparison element, a delay line, and an OR 1 element.

Недостатками устройства вл ютс небольшой коэффициент делени и сложность.The drawbacks of the device are a small division ratio and complexity.

Наиболее близким по технической сущности к изобретению вл етс умножитель частоты следовани импульсов, содержащий два цифровых дифференциатора, выходы которых подключены к элементу ИЛИ, при этом вход первого дифференциатора подключен непосредственно к входной щине, а вход второго дифференциатора - соответственно через элемент НЕ 2.The closest in technical essence to the invention is a pulse frequency multiplier containing two digital differentiators, the outputs of which are connected to the OR element, while the input of the first differentiator is connected directly to the input busbar, and the input of the second differentiator is, respectively, through the element HE 2.

Недостатком устройства вл етс то, что его коэффициент умножени может быть равен только двум.The drawback of the device is that its multiplication factor can be only two.

Цель изобретени - увеличение коэффициента умножени в п раз при одновременном упрощении устройства.The purpose of the invention is to increase the multiplication factor n times while simplifying the device.

Указанна цель достигаетс тем, что в умножитель частоты следовани импульсов, содержащий элемент НЕ, вход которого подключен к входной шине и элемент И-НЕ введены автогенераторы и дополнительные элементы НЕ, вход первого из которых соединен с выходом первого автогенератора и первым входом элемента И-НЕ, а выход - с первым входом второго автогенератора , первый вход которого соединен с входной шиной, а выход - со вторым входом элемента И-НЕ и входом второго дополнительного элемента НЕ, выход которого подключен к первому входу первого автогенератора , второй вход которого соединен с выходом эле мента НЕ.This goal is achieved by the fact that the multiplier of the pulse frequency, containing the element NOT, the input of which is connected to the input bus and the element NAND amplifiers and additional elements NOT, the input of the first of which is connected to the output of the element NAND and the output is with the first input of the second auto generator, the first input of which is connected to the input bus, and the output with the second input of the NAND element and the input of the second additional element NO, the output of which is connected to the first input of the first auto generator, a second input coupled to an output of the element NO.

На чертеже представлена структурна схема устройства.The drawing shows a block diagram of the device.

Устройство содержит элементы 1-3 НЕ, автогенераторы 4 и 5, элемент 6 И-НЕ.The device contains elements 1-3 NOT, autogenerators 4 and 5, element 6 AND-NOT.

Claims

The input of the multiplier is a pulse sequence of multiplied frequency. With the arrival of a positive pulse to the first inputs of autogenerators 5 and 4 through element 1, which corresponds to feeding a logical zero to the autogenerator 5 and a logical unit to the autogenerator 4, the autogenerator 5 is excited and begins to generate a frequency whose initial phase of oscillation will be tied to the initial phase of the input pulse . The output signal from the output of the oscillator 5 through element 3, entering the second input of the oscillator 4, forcibly excites it, and the phases of the oscillation periods of the autogenerator 4 will be tied to the phases of the periods of the autogenerator 5. The output signal from the output of the autogenerator 4 through element 2 enters the second the input of the oscillator 5, forcibly binds the phases of its oscillation periods to its phases of the oscillation periods, thus creating the equality of the frequencies of both oscillators. At the moment the input pulse changes, which corresponds to a change in the states at the first inputs of the oscillators 5 and 4, the oscillator 5 stops generating oscillations, and the oscillator 4 starts exciting and starts generating a frequency whose oscillation phase will be tied to the initial phase of the input pulse. The output signal from the oscillator 4 through element 5 arriving at the second input of the oscillator 5 forcibly excites it, the phases of oscillation periods of which will be tied to the phases of oscillation periods of the oscillator 4. The output signal from the output of the autogenerator 5 through element 3 enters the second input of the autogenerator 4 , forcibly binds the phases of the oscillation periods of the oscillator 4 to its phases of the oscillation periods, creating an equality of the frequencies of both oscillators. Thus, at the output of the frequency multiplier, the phase modulation decreases due to the equality of the frequencies of both oscillators in the excitation mode. Such a construction significantly increases the multiplication factor. To multiply the frequency of the following periodic pulses by h times, pulses with the frequency fi determined by the ratio n f- must be applied to the input of the multiplier, where n is the multiplication factor, f is the frequency of the oscillators. Introduction to the multiplier of the pulse frequency of two pulsed autogenerators, two NOT elements, connected in a certain way, made it possible to reduce the phase modulation in the excitation mode of both generators, which allowed a significant increase in the coefficient -. multiplying a frequency with a more simple circuit of the device; Invention Formula Pulse Frequency Multiplier comprising an NO element whose input is connected to the input bus and an AND-NOT element characterized in that in order to increase the multiplication factor n times while simplifying devices, autogenerators and additional NOT elements are entered into it, the input of the first of which is connected to the output of the first autogenerator and the first input of the NAND element, and the output to the first input of the second autogenerator, the first input cat This is connected to the input width, and the output is connected to the second INPUT of the NAND element and the input of the second additional NO element, the output of which is connected to the first input of the first autogenerator, the second input of which is connected to the output of the NO element. Sources of information taken into account in the examination 1. USSR author's certificate number 337947, cl. H 03 K 23/00, 28.12.70.

2. US patent number 3786357, cl. 328-38, 1/15/74.