SU1737722A1

SU1737722A1 - Demodulator of pulse-phase modulated signals

Info

Publication number: SU1737722A1
Application number: SU904779526A
Authority: SU
Inventors: Борис Яковлевич Осипов; Валерий Иванович Сапрыкин; Юлия Ивановна Гребнева; Анатолий Савельевич Евженков
Original assignee: Воронежский научно-исследовательский институт связи
Priority date: 1990-01-08
Filing date: 1990-01-08
Publication date: 1992-05-30

Abstract

Изобретение относитс к импульсной технике и может быть использовано в системах радиосв зи, телеметрии и преобразова- ни сигналов. Цель изобретени повышение помехоустойчивости и расширение области принимаемых сигналов. Демодул тор содержит генератор 1 посто нного тока, ключи 2-4, блок 5 аналогового запоминани , дифференцирующую цепь 6, конденсатор 7, одновибратор 8, компаратор 9, одновибратор 10, ключ 11, формирователь 12. Введение в устройство п диодов 13 и п вычитателей 14 мод позвол ет при приеме сигналов со стертыми элементами на врем одного такта запоминать уровень напр жени , соответствующий наиболее веро тному значению сигнала (моде), что резко повышает помехоустойчивость приема сигналов. Кроме этого устройство может работать с различными видами входных сигналов, так как мода вычисл етс адаптивно к принимаемому сигналу. 3 ил. сл сThe invention relates to a pulse technique and can be used in radio communication systems, telemetry and signal conversion. The purpose of the invention is improving noise immunity and expanding the range of received signals. The demodulator contains a DC generator 1, 2-4 keys, an analog memory block 5, a differentiation circuit 6, a capacitor 7, a single vibrator 8, a comparator 9, a single vibrator 10, a key 11, a driver 12. Introduction to the device 14 modes allows for receiving signals with erased elements for the time of one clock cycle to memorize the voltage level corresponding to the most probable signal value (mode), which dramatically increases the noise immunity of signal reception. In addition, the device can work with various types of input signals, since the mode is calculated adaptively to the received signal. 3 il. cl

Description

1one

tmaxm 6)гхл S/naxmtmaxm 6) ghl S / naxm

f rncrxm -З/гнглггт 4тсгх/п . Zf rncrxm -3 / gnglgt 4tsgkh / p. Z

/fдиодам fOf.../3n/ fOf diodes ... / 3n

Claims

0 claims

A demodulator of signals with phase-pulsed modulation, containing the first one-shot, the first input of which is connected to the first input bus, and the output - to

5 the control input of the first key, the input of which is connected to the output of the DC generator, and the output - to the first input of the comparator, the input of the second key and to the common bus - through a capacitor parallel to which a third key is connected the control input of the second key, the second input of the first one-shot and the output of the differentiating circuit, the input

5 of which is connected to the second input bus, the shaper of the reference signals, the output of which is connected to the second input of the comparator, the output of which is connected to the input of the second one-oscillator, the first output of which is connected to the control input of the fourth key, and the second output to the second control input of the second a key, the output of which is connected to the output of the fourth key and, an input of the analog storing unit 5, the output of which is connected to the output bus, characterized in that, in order to increase noise immunity and expand the area, we take x signals, it is further introduced n diodes and n calculators input modes,

at the same time, the inputs n of the mode calculators are connected by the diodes, the others of the same name are taken out of the output bus of the demodulator of the sig-water, which are connected to the input of the quadtronals, their outputs are of the same key. iff)

one

tmaxm 6) ghl S / naxm

f rncrxm -3 / gnglgt 4tsgkh / p. Z

/ fOf diodes ... / 3n