SU146351A1 - Device for eliminating "reverse operation" in communication channels with phase shift keying - Google Patents

Device for eliminating "reverse operation" in communication channels with phase shift keying

Info

Publication number
SU146351A1
SU146351A1 SU727927A SU727927A SU146351A1 SU 146351 A1 SU146351 A1 SU 146351A1 SU 727927 A SU727927 A SU 727927A SU 727927 A SU727927 A SU 727927A SU 146351 A1 SU146351 A1 SU 146351A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phase
eliminating
phase shift
communication channels
shift keying
Prior art date
Application number
SU727927A
Other languages
Russian (ru)
Inventor
А.М. Зингеренко
Л.С. Шабарчин
Original Assignee
А.М. Зингеренко
Л.С. Шабарчин
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by А.М. Зингеренко, Л.С. Шабарчин filed Critical А.М. Зингеренко
Priority to SU727927A priority Critical patent/SU146351A1/en
Application granted granted Critical
Publication of SU146351A1 publication Critical patent/SU146351A1/en

Links

Description

Известны системы тонального телеграфировани  с фазовой модул цией , у которых фаза сигнала, соответствующа  положительной телеграфной посылке, отличаетс  от фазы сигнала, соответствующей отрицательной лосылке, на 180°. Основной недостаток известных систем состоит в том, что при изменении скачком фазы передаваемого сигнала невозможен длительный негативный прием телеграфных посылок.Phase modulation tone wiring systems are known, in which the phase of the signal corresponding to the positive telegraph message differs from the phase of the signal corresponding to negative transmission by 180 °. The main disadvantage of the known systems is that when the phase of a transmitted signal changes by a jump, long-term negative reception of telegraphic messages is impossible.

Описываемое устройство отличаетс  от известных тем, что в нем применено электронное реле, которое при скачке фазы синхронного напр жени  переключает фазу напр жени , подаваемого на фазовый детектор . При использовании двухкратной телеграфной работы в одном частотном канале выход приемника подключен к двум суммирующим устройствам, переключаемым упом нутым электронным реле. Это устран ет негативную работу на приеме при скачкообразном изменении фазы синхронного напр жени .The described device differs from the known ones in that it uses an electronic relay, which, during a phase jump of a synchronous voltage, switches the phase of the voltage supplied to the phase detector. When using double telegraph operation in one frequency channel, the receiver output is connected to two summing devices switched by the above-mentioned electronic relay. This eliminates the negative reception operation when the phase change of the synchronous voltage is abrupt.

Скелетна  схема описываемого устройства приведена на чертеже.The skeletal diagram of the described device is shown in the drawing.

Принимаемый на зажим / фазово-модулированный сигнал поступает на фазовый детектор 2 и устройство 3 выделени  синхронной частоты . С выхода устройства 3 часть напр жени  подаетс  на анализатор скачка фазы синхронного напр жени , который содержит фазовый детектор 4 и линию задержки 5. В устойчивом состо нии, когда начальна  фаза синхронного напр жени  остаетс  неизменной, на оба входа детектора 4 колебани  поступают в фазе или противофазе. Если колебани  наход тс  в фазе, то на выходе детектора 4 возникает напр жение положительной пол рности. После скачка фазы синхронного напр жени , обусловленного переходом в другое устойчивое состо ние в течение времени, равном времени задержки линии 5, на выходе фазового детектора 4 будет действовать напр жение, наход щеес  в противофазе с синхронным напр жением. Следовательно, на выходе детектоThe received signal at the terminal / phase modulated signal is fed to the phase detector 2 and the synchronous frequency extractor 3. From the output of the device 3, a part of the voltage is supplied to the phase jump phase analyzer of the synchronous voltage, which contains the phase detector 4 and the delay line 5. In the steady state, when the initial phase of the synchronous voltage remains unchanged, both inputs of the detector 4 oscillate in phase or antiphase. If the oscillations are in phase, then a positive polarity voltage arises at the output of detector 4. After a phase change in the synchronous voltage due to a transition to another steady state for a time equal to the delay time of line 5, the output of phase detector 4 will act on a voltage that is out of phase with the synchronous voltage. Therefore, at the output of the detector

SU727927A 1961-04-24 1961-04-24 Device for eliminating "reverse operation" in communication channels with phase shift keying SU146351A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU727927A SU146351A1 (en) 1961-04-24 1961-04-24 Device for eliminating "reverse operation" in communication channels with phase shift keying

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU727927A SU146351A1 (en) 1961-04-24 1961-04-24 Device for eliminating "reverse operation" in communication channels with phase shift keying

Publications (1)

Publication Number Publication Date
SU146351A1 true SU146351A1 (en) 1961-11-30

Family

ID=48301819

Family Applications (1)

Application Number Title Priority Date Filing Date
SU727927A SU146351A1 (en) 1961-04-24 1961-04-24 Device for eliminating "reverse operation" in communication channels with phase shift keying

Country Status (1)

Country Link
SU (1) SU146351A1 (en)

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