RU2014144650A

RU2014144650A - The method of amplitude-phase modulation of a high-frequency signal and device for its implementation

Info

Publication number: RU2014144650A
Application number: RU2014144650A
Authority: RU
Inventors: Александр Афанасьевич Головков; Владимир Александрович Головков
Priority date: 2014-11-05
Filing date: 2014-11-05
Publication date: 2016-05-27

Abstract

1. Способ амплитудно-фазовой модуляции высокочастотного сигнала, состоящий в том, что высокочастотный сигнал подают на модулятор, выполненный из четырехполюсника, управляемого нелинейного элемента, источника управляющего низкочастотного сигнала и нагрузки, амплитуду и фазу высокочастотного сигнала изменяют путем изменения амплитуды управляющего низкочастотного сигнала на нелинейном элементе, отличающийся тем, что четырехполюсник выполняют комплексным из реактивных и резистивных элементов, в качестве нелинейного элемента используют трехполюсный нелинейный элемент, который включают между источником высокочастотного сигнала и входом комплексного четырехполюсника по схеме с общим одним из трех электродов, к выходу комплексного четырехполюсника подключают нагрузку, заданные зависимости отношения модулей и разности фаз передаточной функции модулятора в двух состояниях, определяемых двумя уровнями управляющего низкочастотного сигнала, от частоты и заданные зависимости модуля и фазы передаточной функции модулятора от амплитуды управляющего низкочастотного сигнала, непрерывно изменяемой в пределах от одного уровня управляющего низкочастотного сигнала до другого, в заданной полосе частот обеспечивают за счет выбора зависимости элемента zматрицы сопротивлений комплексного четырехполюсника от частоты с помощью следующего математического выражения:где; z, z- заданные зависимости соответствующих элементов матрицы сопротивлений комплексного четырехполюсника от частоты; m, φ- заданные зависимости отношения модулей и разности фаз передаточной функции в двух состояниях управляемого нелинейного элемен1. The method of amplitude-phase modulation of a high-frequency signal, consisting in the fact that a high-frequency signal is supplied to a modulator made of a four-terminal device, a controlled non-linear element, a source of a control low-frequency signal and load, the amplitude and phase of the high-frequency signal are changed by changing the amplitude of the control low-frequency signal on a non-linear element, characterized in that the quadripole is made complex of reactive and resistive elements, as a nonlinear element using t a three-pole nonlinear element, which is connected between the source of the high-frequency signal and the input of the complex four-terminal network according to a circuit with a common one of three electrodes, the load is connected to the output of the complex four-terminal network, the given dependences of the ratio of the modules and the phase difference of the transfer function of the modulator in two states, determined by two levels of the control low-frequency the signal, on the frequency and the given dependences of the module and phase of the transfer function of the modulator on the amplitude of the control low-frequency signal ala, continuously varying from one level of the control low-frequency signal to another, in a given frequency band is provided by selecting the dependence of the resistance matrix element z of the complex four-terminal network on the frequency using the following mathematical expression: where; z, z - given dependences of the corresponding elements of the resistance matrix of a complex four-terminal network on frequency; m, φ are given dependences of the ratio of the modules and the phase difference of the transfer function in two states of the controlled nonlinear element

Claims

1. The method of amplitude-phase modulation of a high-frequency signal, consisting in the fact that a high-frequency signal is supplied to a modulator made of a four-terminal device, a controlled non-linear element, a source of a control low-frequency signal and load, the amplitude and phase of the high-frequency signal are changed by changing the amplitude of the control low-frequency signal on a non-linear element, characterized in that the quadripole is made complex of reactive and resistive elements, as a nonlinear element using t a three-pole nonlinear element, which is connected between the source of the high-frequency signal and the input of the complex four-terminal network according to a circuit with a common one of three electrodes, the load is connected to the output of the complex four-terminal network, the given dependences of the ratio of the modules and the phase difference of the transfer function of the modulator in two states, determined by two levels of the control low-frequency the signal, on the frequency and the given dependences of the module and phase of the transfer function of the modulator on the amplitude of the control low-frequency signal ala, continuously varying from one level of the control low-frequency signal to another, in a given frequency band provide by selecting the dependence of the element z _{22 of} the resistance matrix of a complex four-terminal network with frequency using the following mathematical expression:

Where

; z ₁₁ , z ₂₁ are the given dependences of the corresponding elements of the resistance matrix of the complex four-terminal network on frequency; m ₂₁ , φ ₂₁ are the given dependences of the ratio of the modules and the phase difference of the transfer function in two states of the controlled nonlinear element, determined by two levels of the control low-frequency signal, on the frequency in a given frequency band;

;

- the given dependences of the elements of the resistance matrix of a three-pole nonlinear element in two states, determined by two levels of the control low-frequency signal, on the frequency in a given frequency band; z ₀ , z _n are the given dependences of the complex resistances of the high-frequency signal source and load on frequency.

2. A device for amplitude-phase modulation of a high-frequency signal, consisting of a four-terminal, a controlled non-linear element, a source of a controlling low-frequency signal and load, characterized in that the four-terminal is made complex in the form of a U-shaped connection of three complex two-terminal, a three-pole non-linear element is used as a non-linear element which is connected between the source of the high-frequency signal and the input of the complex four-terminal network according to a circuit with a common one of the three electrodes, to the load is connected to the output of the complex four-terminal, the third complex two-terminal of the U-shaped connection is formed from the first resistive two-terminal with resistance R ₁ connected in series, the first capacitor with capacitance C ₁ and the second resistive two-terminal with resistance R ₂ and the second capacitor with capacitance C ₂ connected in parallel , and the values of the parameters of the third complex two-terminal U-shaped connection are determined in accordance with the following mathematical expressions:

Where

- the optimal values of the real and imaginary components of the resistance of the third complex two-terminal U-shaped connection at two frequencies;

- the optimal values of the complex resistance of the third complex two-terminal U-shaped connection at two frequencies;

- the set values of the elements of the resistance matrix of a three-pole nonlinear element in two states defined by two levels of the control low-frequency signal, at two frequencies; Z _1n , Z _2n - set values of the complex resistance of the first and second complex two-terminal U-shaped connection at two frequencies; m _21n , φ _21n are the set values of the ratios of the modules and the phase differences of the transfer function in two states of the controlled three-pole nonlinear element, defined by two levels of the control low-frequency signal, at two frequencies; z _0n , z _nn are the set values of the complex resistances of the source of the high-frequency signal and the load at two frequencies; ω _1,2 = 2πf _1,2 ; n = 1,2 - numbers of the given two frequencies f _1,2 .