RU2011108316A - METHOD FOR PHASE MODULATION AND DEMODULATION OF HIGH FREQUENCY SIGNALS AND DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR PHASE MODULATION AND DEMODULATION OF HIGH FREQUENCY SIGNALS AND DEVICE FOR ITS IMPLEMENTATION Download PDFInfo
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Abstract
1. Способ фазовой модуляции и демодуляции высокочастотных сигналов, состоящий во взаимодействии высокочастотных и низкочастотных сигналов с устройством фазовой модуляции и демодуляции, выполненном из реактивного четырехполюсника, нелинейного элемента и низкочастотной избирательной нагрузки, в режиме демодуляции высокочастотный сигнал преобразовывают в амплитудно-фазомодулированный сигнал путем подачи высокочастотного сигнала на правый или на левый склон АЧХ устройства фазовой модуляции и демодуляции, с помощью нелинейного элемента разрушают спектр амплитудно-фазомодулированного сигнала на высокочастотные и низкочастотные составляющие, информационный низкочастотный сигнал подают на низкочастотную избирательную нагрузку в виде дифференцирующей или интегрирующей цепи соответственно, с помощью фильтра нижних частот выделяют информационный низкочастотный сигнал, амплитуда которого изменяется по закону изменения фазы входного высокочастотного сигнала, в режиме модуляции нелинейный элемент подключают к источнику информационного низкочастотного сигнала, фазу высокочастотного сигнала изменяют по закону изменения амплитуды информационного низкочастотного сигнала, отличающийся тем, что перед фильтром нижних частот включают высокочастотную нагрузку в поперечную цепь, в качестве нелинейного элемента используют трехэлектродный нелинейный элемент и включают его между выходом четырехполюсника и высокочастотной нагрузкой по схеме с общим одним из трех электродов, в режиме модуляции формируют квазилинейную фазовую модуляционную характеристику и модулированный по фазе высокочастотный сигн� 1. The method of phase modulation and demodulation of high-frequency signals, consisting in the interaction of high-frequency and low-frequency signals with a phase modulation and demodulation device made of a reactive four-terminal device, a nonlinear element and a low-frequency selective load, in the demodulation mode, the high-frequency signal is converted into an amplitude-phase modulated signal by applying a high-frequency signal to the right or left slope of the frequency response of the phase modulation and demodulation device, using a nonlinear This destroys the spectrum of the amplitude-phase-modulated signal into high-frequency and low-frequency components, the information low-frequency signal is applied to the low-frequency selective load in the form of a differentiating or integrating circuit, respectively, using the low-pass filter, the information low-frequency signal is isolated, the amplitude of which changes according to the law of the phase of the input high-frequency signal, in modulation mode, the nonlinear element is connected to the source of the information low-frequency signal, fa The amplitude of the information low-frequency signal is changed according to the law of the high-frequency signal, characterized in that a high-frequency load is included in the transverse circuit in front of the low-pass filter, a three-electrode non-linear element is used as a nonlinear element, and it is turned on between the four-terminal output and the high-frequency load according to the scheme with one three electrodes, in modulation mode form a quasilinear phase modulation characteristic and a phase modulated high-frequency signal
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RU2011108316/08A RU2011108316A (en) | 2011-03-03 | 2011-03-03 | METHOD FOR PHASE MODULATION AND DEMODULATION OF HIGH FREQUENCY SIGNALS AND DEVICE FOR ITS IMPLEMENTATION |
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RU2011108316/08A RU2011108316A (en) | 2011-03-03 | 2011-03-03 | METHOD FOR PHASE MODULATION AND DEMODULATION OF HIGH FREQUENCY SIGNALS AND DEVICE FOR ITS IMPLEMENTATION |
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RU2011108316A true RU2011108316A (en) | 2012-09-10 |
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2011
- 2011-03-03 RU RU2011108316/08A patent/RU2011108316A/en not_active Application Discontinuation
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