RU2014154420A - Method for generating and frequency modulating high-frequency signals and device for its implementation - Google Patents

Abstract

1. The method of generation and frequency modulation of high-frequency signals, based on the conversion of the energy of a constant voltage source into the energy of a high-frequency signal, the interaction of a high-frequency signal with a direct transmission circuit made of a three-pole nonlinear element and a four-terminal, load and external feedback circuit, the fulfillment of the excitation conditions in the form amplitude balance and phase balance, respectively determining the amplitude and frequency of the generated high-frequency signals, matching conditions of the circuit direct transmission with the load and conditions for matching the load with the control electrode of a three-pole nonlinear element, changing the frequency of the generated oscillations according to the law of changing the amplitude of the low-frequency control signal by correspondingly changing the phase balance, characterized in that the four-terminal is resistive, the load is made in the form of the first two-terminal with complex resistance, as an external feedback circuit, use an arbitrary four-terminal connected in parallel to a three-pole a non-linear element, a three-pole non-linear element and a feedback circuit as a single node cascade between the introduced second two-terminal with complex resistance, simulating the resistance of the generator signal source in the amplification mode, and the input of the resistive four-terminal, to the output of which the load is connected, excitation conditions in the form of an amplitude balance and phase balance and matching conditions are performed with a quasilinear dependence of the generation frequency on the amplitude of the control signal by selecting frequency

Claims (2)

1. The method of generation and frequency modulation of high-frequency signals, based on the conversion of the energy of a constant voltage source into the energy of a high-frequency signal, the interaction of a high-frequency signal with a direct transmission circuit made of a three-pole nonlinear element and a four-terminal, load and external feedback circuit, the fulfillment of the excitation conditions in the form amplitude balance and phase balance, respectively determining the amplitude and frequency of the generated high-frequency signals, matching conditions of the circuit direct transmission with the load and conditions for matching the load with the control electrode of a three-pole nonlinear element, changing the frequency of the generated oscillations according to the law of changing the amplitude of the low-frequency control signal by correspondingly changing the phase balance, characterized in that the four-terminal is resistive, the load is made in the form of the first two-terminal with complex resistance, as an external feedback circuit, use an arbitrary four-terminal connected in parallel to a three-pole a non-linear element, a three-pole non-linear element and a feedback circuit as a single node cascade between the introduced second two-terminal with complex resistance, simulating the resistance of the generator signal source in the amplification mode, and the input of the resistive four-terminal, to the output of which the load is connected, excitation conditions in the form of an amplitude balance and phase balance and matching conditions are performed with a quasilinear dependence of the generation frequency on the amplitude of the control signal by selecting frequency the dependences of the imaginary components of the resistance of the signal source in the amplification mode x ₀ and the load x _n from the condition of providing the excitation mode of generation in the form of equal to zero the imaginary component and equality to the non-positive number δ≤0 of the real component of the denominator of the transmission coefficient in the amplification mode in a given frequency variation band and a given range changes in the amplitude of the low-frequency control signal in accordance with the following mathematical expressions

where X = AB ₀ -BA ₀ ; Y = AD ₀ + CB ₀ - (D-δ) A ₀ -BC ₀ ; Z = CD ₀ - (D-δ) C ₀ ; A ₀ = B _l -b ₁₁ γ; B ₀ = γ (1 + g ₁₁ r ₀ ) -g ₂₂ -A ₁ r ₀ ; C ₀ = - (r _n + β) A ₁ + (α + γr _n ) g ₁₁ ; D ₀ = - (b ₂₂ + r ₀ B ₁ ) (r _n + β) + (α + γr _n ) b ₁₁ r ₀ ; A = A ₁ -γg ₁₁ ; B = b ₂₂ + r ₀ (B ₁ -b ₁₁ γ); C = (r _n + β) B ₁ - (α + γr _n ) b ₁₁ ; D = - (g ₂₂ + r ₀ A ₁ ) (r _n + β) + (α + γr _n ) (1 + g ₁₁ r ₀ ); A ₁ = g ₁₁ g ₂₂ -b ₁₁ b ₂₂ -g ₁₂ g ₂₁ + b ₁₂ b ₂₁ ; B ₁ = g ₁₁ b ₂₂ + b ₁₁ g ₂₂ -g ₁₂ b ₂₁ -b ₁₂ g ₂₁ ; $$\alpha =\frac{d}{a}$$

, $$\beta =\frac{b}{a}$$

; $$\gamma =\frac{c}{a}$$

- given dependencies of the relations of the corresponding elements of the classical transmission matrix on the frequency in a given frequency band; a , b, c, d - elements of the classical transmission matrix of a resistive four-terminal network; r ₀ , r _n are the given dependences of the actual components of the resistance of the source of the input high-frequency signal of the generator in the amplification and load mode on the frequency in a given frequency band; x ₀ , x _n are the optimal dependences of the imaginary components of the resistance of the source of the input high-frequency signal of the generator in the amplification and load conditions on the frequency in a given frequency band; g ₁₁ , b ₁₁ , g ₁₂ , b ₁₂ , g ₂₁ , b ₂₁ , g ₂₂ , b ₂₂ - given total dependences of the real and imaginary components of the conductivity matrix elements of a three-pole nonlinear element on the frequency in a given frequency band with a corresponding change in the amplitude of the low-frequency control signal and the corresponding real and imaginary components of the conductivity matrix of the external feedback circuit of the frequency in a given frequency band. 2. A device for generating high-frequency signals, consisting of a constant voltage source, a source of low-frequency control signal, a direct transmission circuit of a three-pole nonlinear element and a four-terminal, load and external feedback circuit, characterized in that the four-terminal is made resistive in the form of an arbitrary connection of resistive two-terminal devices, load made in the form of the first two-terminal with complex resistance, the external feedback circuit is made in the form of an arbitrary four-terminal of a complex two-terminal network connected in parallel to a three-pole nonlinear element, a three-pole nonlinear element and a feedback circuit as a single unit are cascaded between the second integrated two-terminal terminal with complex resistance imitating the resistance of the generator signal source in amplification mode and the input of a resistive four-terminal network connected to its output load imaginary components of the signal source impedance mode gain x ₀ and x _n load impedance implemented as reagent s two-poles formed in a series-connected parallel circuit of elements with parameters L _1k, C _1k and sequential circuit element with the parameters L _2k, C _2k, where the values of these parameters are determined from the condition of ensuring steady state lasing at four frequencies of the generated signal and corresponding four values of the amplitude of the low-frequency control signal using the following mathematical expressions:

where A ₃ = A ₂ C ₄ -A ₄ C ₂ ; B ₃ = A ₂ D ₄ + B ₂ C ₄ -A ₄ D ₂ -B ₄ C ₂ ; C ₃ = B ₂ D ₄ -B ₄ D ₂ ;

X = AB ₀ -BA ₀ ; Y = AD ₀ + CB ₀ - (D-δ) A ₀ -BC ₀ ; Z = CD ₀ - (D-δ) C ₀ ; A ₀ = B ₁ -b _11m γ; B ₀ = γ (1 + g _11m r _0m ) -g _22m -A ₁ r _0m ; C ₀ = - (r _nm + β) A ₁ + (α + γr _nm ) g _11m ; D ₀ = - (b _22m + r _0m B ₁ ) (r _nm + β) + (α + γr _nm ) b _11m r _0m ; A = A ₁ -γg _11m ; B = b _22m + r _0m (B _l -b _11m γ); C = (r _nm + β) B ₁ - (α + γ _nm ) b _11m ; D = - (g _22m + r _0m A ₁ ) (r _nm + β) + (α + γr _nm ) (1 + g _11m r _0m ); A ₁ = g _11m g _22m -b _11m b _22m -g _12m g _21m + b _12m b _21m ; B ₁ = g _11m b _22m + b _11m g _22m -g _12m b _21m -b _12m g _21m ; $$\alpha =\frac{d}{a}$$

, $$\beta =\frac{b}{a}$$

; $$\gamma =\frac{c}{a}$$

- the set values of the relations of the corresponding elements of the classical transmission matrix at the given frequencies; a , b, c, d - elements of the classical transmission matrix of the selected typical resistive four-terminal network; r _0m, r _nM - setpoints real components of the input resistance RF generator source mode gain and a load at a predetermined number of frequencies; x _m0 , x _mn are the optimal values of the imaginary components of the resistance of the source of the input high-frequency signal of the generator in the amplification and load mode for a given number of frequencies; g _11m , b _11m , g _12m , b _12m , g _21m , b _21m , g _22m , b _22m - given total values of the real and imaginary components of the conductivity matrix of a three-pole nonlinear element for four given values of the amplitude of the control signal and the corresponding real and imaginary components elements of the conductivity matrix of the external feedback circuit at given frequencies; m = 1,2,3,4 - frequency numbers; δ≤0 - condition for the excitation of oscillations; ω _1,2,3,4 = 2πƒ _1,2,3,4 ; ƒ _1,2,3,4 - set frequencies; k = 0, n is the index characterizing the belonging of the parameters to the formation of two-terminal networks with resistances X _mk = x _mk .