RU2011132530A - METHOD FOR DEMODULATION AND FILTRATION OF PHASE-MODULATED SIGNALS AND DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR DEMODULATION AND FILTRATION OF PHASE-MODULATED SIGNALS AND DEVICE FOR ITS IMPLEMENTATION Download PDFInfo
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- RU2011132530A RU2011132530A RU2011132530/08A RU2011132530A RU2011132530A RU 2011132530 A RU2011132530 A RU 2011132530A RU 2011132530/08 A RU2011132530/08 A RU 2011132530/08A RU 2011132530 A RU2011132530 A RU 2011132530A RU 2011132530 A RU2011132530 A RU 2011132530A
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Abstract
1. Способ демодуляции и фильтрации фазомодулированных сигналов, состоящий в том, что демодулятор включают между источником фазомодулированных сигналов и низкочастотной нагрузкой и выполняют его из четырехполюсника, двухполюсного нелинейного элемента, фильтра нижних частот и разделительной емкости, фазомодулированный сигнал преобразовывают в амплитудно-фазомодулированный сигнал путем его подачи на правый или левый склон амплитудно-частотной характеристики, с помощью нелинейного элемента разрушают спектр амплитудно-фазомодулированного сигнала на высокочастотные и низкочастотные составляющие, с помощью фильтра нижних частот выделяют информационный низкочастотный сигнал, с помощью разделительной емкости устраняют постоянную составляющую информационного низкочастотного сигнала, амплитуда которого изменяется по закону изменения фазы фазомодулированного входного сигнала, информационный низкочастотный сигнал подают на низкочастотную избирательную нагрузку в виде дифференцирующей или интегрирующей цепи соответственно, отличающийся тем, что перед фильтром нижних частот в поперечную цепь вводят высокочастотную нагрузку, двухполюсный нелинейный элемент включают между четырехполюсником и введенной высокочастотной нагрузкой в поперечную цепь, зависимости элементов матрицы сопротивлений четырехполюсника от частоты выбирают из условия формирования заданной формы и левого квазилинейного склона амплитудно-частотной характеристики высокочастотной части демодулятора с помощью следующих математических выражений:;,где;;;;;x, x=-х- оптимальные зависимости соответствующих элементов матрицы сопроти1. A method for demodulating and filtering phase-modulated signals, which consists in the fact that the demodulator is turned on between a source of phase-modulated signals and a low-frequency load and is made of a four-terminal device, a two-pole nonlinear element, a low-pass filter and a separation capacitance, the phase-modulated signal is converted into an amplitude-phase-modulated signal by its supply to the right or left slope of the amplitude-frequency characteristic, using a nonlinear element destroy the spectrum of amplitude-phase modulation signal to the high-frequency and low-frequency components, using the low-pass filter, the information low-frequency signal is isolated, the dc component of the information low-frequency signal is eliminated with the help of a separation capacitance, the amplitude of which changes according to the law of phase change of the phase-modulated input signal, the information low-frequency signal is applied to the low-frequency selective load in the form differentiating or integrating circuit, respectively, characterized in that in front of the filter neither of these frequencies, a high-frequency load is introduced into the transverse circuit, a bipolar nonlinear element is connected between the four-terminal and the high-frequency load introduced into the transverse circuit, the dependences of the elements of the four-terminal resistance matrix on the frequency are selected from the conditions for the formation of a given shape and the left quasilinear slope of the amplitude-frequency characteristic of the high-frequency part of the demodulator using the following mathematical expressions:;, where ;;;;; x, x = -x- optimal dependencies of the corresponding elements of the matrix of resistance
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RU2011132530/08A RU2483430C2 (en) | 2011-08-02 | 2011-08-02 | Method of demodulating and filtering phase-modulated signals and apparatus for realising said method |
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RU2011132530/08A RU2483430C2 (en) | 2011-08-02 | 2011-08-02 | Method of demodulating and filtering phase-modulated signals and apparatus for realising said method |
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RU2011132530A true RU2011132530A (en) | 2013-02-10 |
RU2483430C2 RU2483430C2 (en) | 2013-05-27 |
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RU2011132530/08A RU2483430C2 (en) | 2011-08-02 | 2011-08-02 | Method of demodulating and filtering phase-modulated signals and apparatus for realising said method |
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Families Citing this family (1)
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RU2577913C2 (en) * | 2014-05-22 | 2016-03-20 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации | Method of amplification and demodulation of frequency-modulated signals and device for its implementation |
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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. |
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 |
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 |
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