RU2011132757A - METHOD FOR DEMODULATION OF PHASE-MODULATED SIGNALS AND DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR DEMODULATION OF PHASE-MODULATED SIGNALS AND DEVICE FOR ITS IMPLEMENTATION Download PDFInfo
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- RU2011132757A RU2011132757A RU2011132757/08A RU2011132757A RU2011132757A RU 2011132757 A RU2011132757 A RU 2011132757A RU 2011132757/08 A RU2011132757/08 A RU 2011132757/08A RU 2011132757 A RU2011132757 A RU 2011132757A RU 2011132757 A RU2011132757 A RU 2011132757A
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Abstract
1. Способ демодуляции фазомодулированных сигналов, состоящий в том, что фазомодулированный сигнал подают на демодулятор, выполненный из линейного четырехполюсника, нелинейного элемента и избирательной нагрузки, фазомодулированный сигнал преобразовывают в амплитудно-фазомодулированный сигнал, преобразование фазомодулированного сигнала в амплитудно-фазомодулированный сигнал осуществляют путем подачи этого сигнала на правый или на левый склон АЧХ, низкочастотную составляющую амплитудно-фазомодулированного сигнала подают на дифференцирующую или на интегрирующую цепь соответственно, с помощью нелинейного элемента разрушают спектр амплитудно-фазомодулированного сигнала на высокочастотные и низкочастотные составляющие, с помощью фильтра нижних частот выделяют информационный низкочастотный сигнал, амплитуда которого изменяется по закону изменения фазы фазомодулированного входного сигнала, отличающийся тем, что четырехполюсник выполняют резистивным, вход четырехполюсника подключают к выходу источника фазомодулированного сигнала, в качестве нелинейного элемента используют трехэлектродный нелинейный элемент, который включают по схеме с общим одним из трех электродов между выходом четырехполюсника и введенной в поперечную цепь перед фильтром нижних частот высокочастотной нагрузкой, преобразование фазомодулированного сигнала в амплитудно-фазомодулированный сигнал осуществляют путем формирования квазилинейного склона АЧХ высокочастотной части демодулятора в заданной полосе частот за счет выбора частотных характеристик мнимых составляющих сопротивлений высокочастотной нагрузки xи ист�1. The method of demodulating phase-modulated signals, which consists in the fact that the phase-modulated signal is supplied to a demodulator made of a linear four-terminal network, a non-linear element and a selective load, the phase-modulated signal is converted into an amplitude-phase-modulated signal, the phase-modulated signal is converted into an amplitude-phase-modulated signal by supplying this the signal to the right or left slope of the frequency response, the low-frequency component of the amplitude-phase-modulated signal is fed to the differential an integrating circuit or an integrating circuit, respectively, using a nonlinear element, the spectrum of the amplitude-phase modulated signal is destroyed into high-frequency and low-frequency components, an information low-frequency signal is isolated using a low-pass filter, the amplitude of which changes according to the law of phase change of the phase-modulated input signal, characterized in that the four-terminal network performs resistive, the input of the four-terminal is connected to the output of the phase-modulated signal source, as a nonlinear element They use a three-electrode nonlinear element, which is included according to the scheme with a common one of the three electrodes between the output of the four-terminal and a high-frequency load inserted into the transverse circuit in front of the low-pass filter, the phase-modulated signal is converted into an amplitude-phase-modulated signal by forming a quasilinear slope of the frequency response of the high-frequency part of the demodulator in a given frequency band due to the choice of frequency characteristics of the imaginary components of the resistance of the high-frequency load x and East
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RU2011132757/08A RU2483432C2 (en) | 2011-08-03 | 2011-08-03 | Method of demodulating phase-modulated signals and apparatus for realising said method |
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RU2011132757/08A RU2483432C2 (en) | 2011-08-03 | 2011-08-03 | Method of demodulating phase-modulated signals and apparatus for realising said method |
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RU2011132757A true RU2011132757A (en) | 2013-02-10 |
RU2483432C2 RU2483432C2 (en) | 2013-05-27 |
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RU2011132757/08A RU2483432C2 (en) | 2011-08-03 | 2011-08-03 | Method of demodulating phase-modulated signals and apparatus for realising said method |
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Publication number | Priority date | Publication date | Assignee | Title |
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FR2441298A1 (en) * | 1978-11-07 | 1980-06-06 | Cit Alcatel | RHYTHM RECOVERY DEVICE |
NL8502967A (en) * | 1985-09-19 | 1987-04-16 | Philips Nv | ANGLE DEMODULATOR. |
RU2341887C1 (en) * | 2007-03-21 | 2008-12-20 | Государственное образовательное учреждение высшего профессионального образования Воронежское высшее военное авиационное инженерное училище (военный институт) | Devices for demodulation of phase-modulated radio frequency signals |
RU2341890C1 (en) * | 2007-03-21 | 2008-12-20 | Государственное образовательное учреждение высшего профессионального образования Воронежское высшее военное авиационное инженерное училище (военный институт) | Devices for demodulation of phase-modulated radio frequency signals |
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