RU2710896C1 - Broadband frequency meter for microwave signals on delay lines with preliminary frequency conversion (versions) - Google Patents

Abstract

FIELD: measuring equipment.SUBSTANCE: invention relates to measurement equipment and can be used for rapid measurement of frequency of continuous microwave signals in a wide frequency range. Essence of the disclosed solution lies in the fact that a broadband frequency meter for microwave signals on delay lines with preliminary frequency conversion is made in several versions. In the first case, into this device, consisting of series-connected input amplifier-limiter, band-passing microwave filter, in-phase microwave power divider, as well as N delay lines, N phase correlators, which outputs are connected to a computing device, additionally introduced N frequency multipliers, multiplication factors of which are selected from series 1,2,3...A completely or with omissions, wherein inputs of frequency multipliers are connected to corresponding outputs of inphase divider of microwave power, first outputs of frequency multipliers are connected to inputs of corresponding delay lines, and second outputs to one of inputs of corresponding phase correlators, outputs of delay lines are connected to other input of corresponding phase correlators. In the second case, a device consisting of series-connected input amplifier-limiter, band-passing microwave filter, in-phase microwave power divider, as well as M delay lines, M phase correlators, which outputs are connected to a computing device, additionally introduced M frequency dividers, division coefficients of which are selected from series 1,2,3...B completely or with omissions, wherein inputs of frequency dividers are connected to corresponding outputs of inphase divider of microwave power, first outputs of frequency dividers are connected to inputs of corresponding delay lines, and second outputs to one of inputs of corresponding phase correlators, outputs of delay lines are connected to other input of corresponding phase correlators. In the third case, a device consisting of series-connected input amplifier-limiter, band-passing microwave filter, in-phase microwave power divider, as well as N+M delay lines, N+M phase correlators, which outputs are connected to a computing device, additionally N frequency multipliers are introduced, multiplication factors of which are selected from series 1,2,3...C completely or with passes, M frequency dividers, division coefficients of which are selected from series 1,2,3...D completely or with passes, wherein inputs of frequency multipliers and frequency dividers are connected to corresponding outputs of in-phase divider of microwave power, first outputs of frequency multipliers are connected to inputs of corresponding delay lines, and second outputs to one of inputs of corresponding phase correlators, first outputs of frequency dividers are connected to inputs of corresponding delay lines, and second outputs to one of inputs of corresponding phase correlators, outputs of delay lines are connected to other input of corresponding phase correlators.EFFECT: reduced dimensions and weight, high sensitivity of the device while maintaining accuracy of measuring frequency by replacing long delay lines with short ones with preliminary conversion of frequency of the input signal by dividing and/or multiplying.3 cl, 4 dwg

Description

A device for a broadband frequency meter of microwave signals [1]. A broadband microwave frequency meter consists of an input broadband amplifier, a set of delay lines, phase correlators, analog-to-digital converters, a computing device, and a control device.

The disadvantage of this device is the cumbersomeness caused by the need to use several delay lines, the minimum and maximum delay time of which in order to achieve a given accuracy and range of operating frequencies must differ several times. Another disadvantage of this device is a narrow range of operating frequencies, which is limited by the complexity of designing and manufacturing a broadband delay line with a long delay time. Another disadvantage of this device is the low sensitivity of the device, limited by linear losses in long delay lines.

The closest in technical essence and the achieved technical result to the claimed invention is a device for a broadband frequency meter of microwave signals [2]. A broadband microwave frequency meter consists of an input broadband limiter amplifier, an input microwave passband filter, a set of delay lines, phase correlators, and a computing device.

The disadvantage of this device is the cumbersomeness caused by the need to use several delay lines, the minimum and maximum delay times of which, to achieve a given accuracy and range of operating frequencies, must differ several times. Another disadvantage of this device is a narrow range of operating frequencies, which is limited by the complexity of designing and manufacturing a broadband delay line with a long delay time. Another disadvantage of this device is the low sensitivity of the device, limited by linear losses in long delay lines.

The technical result of the invention is to reduce the overall dimensions and mass, increase the sensitivity of the device while maintaining the accuracy of the frequency measurement.

The aim of the invention is to reduce the bulkiness of the device by replacing long delay lines with short ones with preliminary conversion of the input signal frequency by division and / or multiplication.

The claimed result is achieved by the fact that in the device, consisting of a series-connected input amplifier-limiter, a band-pass microwave filter, an in-phase divider of a microwave power, as well as N delay lines, N phase correlators, the outputs of which are connected to a computing device, N multipliers are additionally introduced frequencies whose multiplication factors are selected from a series of 1,2,3 ... A completely or with gaps, while the inputs of the frequency multipliers are connected to the corresponding outputs of the common-mode microwave power divider, first The output outputs of the frequency multipliers are connected to the inputs of the corresponding delay lines, and the second outputs are connected to one of the inputs of the corresponding phase correlators, the outputs of the delay lines are connected to the other input of the corresponding phase correlators.

The claimed result is also achieved by a device consisting of a series-connected input amplifier-limiter, a band-pass microwave filter, an in-phase microwave power divider, as well as M delay lines, M phase correlators, the outputs of which are connected to a computing device into which M frequency dividers are additionally introduced the division factors of which are selected from a number of 1,2,3 ... B completely or with gaps, while the inputs of the frequency dividers are connected to the corresponding outputs of the in-phase divider of the microwave power, first e outputs of frequency dividers are connected to respective inputs of the delay lines and the second outputs to one input of respective phase correlator, the outputs of delay lines are connected to respective other input of the phase correlators.

The specified technical result is also achieved in a device consisting of a series-connected input amplifier-limiter, a pass-band microwave filter, an in-phase microwave power divider, as well as N + M delay lines, N + M phase correlators, the outputs of which are connected to a computing device, which is additionally introduced N frequency multipliers, the multiplication factors of which are selected from the series 1,2,3 ... C completely or with gaps, M frequency dividers, the division coefficients of which are selected from the series 1,2,3 ... D completely or with accelerations, while the inputs of the frequency multipliers and frequency dividers are connected to the corresponding outputs of the in-phase microwave power divider, the first outputs of the frequency multipliers are connected to the inputs of the corresponding delay lines, and the second outputs to one of the inputs of the corresponding phase correlators, the first outputs of the frequency dividers are connected to the inputs of the corresponding lines delays, and the second outputs to one of the inputs of the corresponding phase correlators, the outputs of the delay lines are connected to another input of the corresponding phase correlators.

The invention is illustrated by drawings in figures 1,2,3. Figure 1 presents the structural diagram of a broadband frequency meter of microwave signals with frequency multipliers. A broadband microwave signal frequency meter contains: an input broadband amplifier-limiter 1, a pass-through microwave filter 2, a microwave power divider 3, frequency multipliers 4.1 ... 4.N, delay lines 5.1 ... 5.N, phase correlators 6.1 ... 6.N, computing device 7.

Figure 2 presents the structural diagram of a broadband frequency meter of microwave signals with frequency dividers. A broadband frequency meter for microwave signals contains: an input broadband amplifier-limiter 8, a pass-band microwave filter 9, a microwave power divider 10, frequency dividers 11.1 ... 11.M, delay lines 12.1 ... 12.M, phase correlators 13.1 ... 13.M, computing device 14.

Figure 3 presents the structural diagram of a broadband frequency meter of microwave signals with multipliers and frequency dividers. A broadband microwave signal frequency meter contains: an input broadband limiter amplifier 15, a microwave pass-through filter 16, a microwave power divider 17, frequency multipliers 18.1 ... 18.N, frequency dividers 19.1 ... 19.N, delay lines 20.1 ... 20.N + M, phase correlators 21.1 ... 21.N + M, computing device 22.

Figure 4 presents the discriminatory characteristics of phase correlators.

For convenience, we consider the operation of a broadband frequency meter, the functional diagram of which is presented in figure 1. Broadband frequency meter of microwave signals works as follows. An input microwave signal with a frequency of ω _{0 is} supplied through an amplifier-limiter 1 to a band-pass filter 2, limiting the input frequency band. Next, the signal is fed to the in-phase divider 3 microwave power, where there is a division of the input signal power into N equal parts. Frequency multipliers 4.1 ... 4.N carry out the function of frequency multiplication and can be performed on the basis of a diode or transistor operating in non-linear mode, or in the form of a specialized microcircuit. The multiplication coefficients of frequency multipliers 4.1 ... 4.N are selected from a series of 1,2,3 ... A completely or with omissions, where A is a finite number, the limiting multiplication coefficient selected from the condition of physical realizability or a given accuracy of frequency measurement. When the frequency multiplier of one of the multipliers is equal to 1, the frequency conversion does not occur, and the input signal through the power divider is fed to the phase correlator. The number of multipliers 4.1 ... 4.N, delay lines 5.1 ... 5.N, phase correlators 6.1 ... 6.N is determined by the working band of the device and the required accuracy of frequency measurement. Assume that the multiplication factor of the frequency multiplier 4.1 is n ₁ , the frequency multiplier 4.2 is n ₂ , the frequency multiplier 4.3 is n ₃ , and so on to n _N , with n _N >...> n ₃ > n ₂ > n ₁ . At the same time, at the outputs of the multipliers 4.1,4.2, ..., 4.N frequencies, we obtain signals with frequencies n ₁ ω ₀ , n ₂ ω ₀ , n ₃ ω ₀ , ..., n _N ω _0, respectively. We also assume that the delay lines 5.1,5.2, ..., 5.N are identical and have an equal delay time equal to τ. Then the phase incursions acquired by the signals at the outputs of the delay lines 5.1,5.2, ..., 5.N will be: θ ₁ = n ₁ ω ₀ τ, θ ₂ = n ₂ ω ₀ τ, ..., θ _n = n _n ω ₀ τ . At the same time, phase raids acquired by the signals at the outputs of the delay lines in the prototype device can be described by the expressions: Δ ₁ = ω ₀ τ ₁ , Δ ₂ = ω ₀ τ ₂ , ..., Δ _n = ω ₀ τ _n . Taking into account that τ ₁ = s ₁ τ, τ ₂ = s ₂ τ, ..., τ _n = s _n τ, where s _n >...> s ₂ > s ₁ are some numbers, we arrive at the identity of the expressions for the phase incursion signals at the output of delay lines in the prototype device and the proposed device. Moreover, the passage of a signal with a frequency nω ₀ through the delay line τ in the proposed device is equivalent to the passage of a signal with a frequency ω ₀ through the delay line nτ in the prototype device, which makes it possible to use a shorter and more compact delay line in the proposed device. The delayed in the delay lines 5.1,5.2, ..., 5.N and unrestrained signals are supplied respectively to the phase correlators 6.1,6.2, ..., 6.N. The phase correlators 6.1,6.2, ..., 6.N form the following discriminatory characteristics, the appearance of which is shown in figure 4 (DFM ₁ - 1, DFM ₂ - 2, ..., DFM _n - 3, and so on):

(1) $$\mathrm{<figure-callout\; id="1"\; label="D\; F\; M"\; filenames="00000011.png,00000013.png"\; state="\{\{state\}\}">D\; </figure-callout>}F{M}_{}{}_1=A_1(1+\cos ({\mathrm{<figure-callout\; id="1"\; label="n"\; filenames="00000011.png,00000013.png"\; state="\{\{state\}\}">n</figure-callout>}}_1\omega \tau ))$$

(1)

(2) $$\mathrm{<figure-callout\; id="2"\; label="D\; F\; M"\; filenames="00000011.png,00000014.png"\; state="\{\{state\}\}">D\; </figure-callout>}F{M}_{}{}_2=A_2(1+\cos ({\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="00000011.png,00000014.png"\; state="\{\{state\}\}">n</figure-callout>}}_2\omega \tau ))$$

(2)

(3) $$DF{M}_n=A_n(1+\cos (n_n\omega \tau ))$$

(3)

where A ₁ , A ₂ , ..., A _n are the proportionality coefficients;

n ₁ , n ₂ , ..., n _n - frequency multiplication factors;

τ is the delay time of the delay line;

ω is the circular frequency.

 The correlator 6.1, which is in the same channel with the frequency multiplier 4.1, has an unambiguous, but relatively gentle discriminating characteristic in the working frequency range, for this reason the correlator 6.1 serves for a rough estimate of the frequency of the input signal. At the same time, phase correlators 6.2, ..., 6.N have ambiguous correlation functions, the steepness of which is higher than the steepness of the correlation characteristic of the correlator 6.1. Correlators 6.2,6.3, ... 6.N are used to improve the accuracy of measuring the frequency of the input signal. The computing device 7 is designed to determine the frequency of the input signal from the voltage from the phase correlators 6.1,6.2, ..., 6.N.

A broadband frequency meter can also be implemented using frequency dividers. Broadband frequency meter microwave signals works as follows. The input microwave signal with a frequency of ω _{0 is} supplied through an amplifier-limiter 8 to a band-pass filter 9, limiting the input frequency band. Next, the signal is fed to the in-phase microwave power divider 10, where the input signal is divided into M equal parts. Frequency dividers 11.1 ... 11.M carry out the function of frequency division and can be performed on the basis of nonlinear elements or specialized microcircuits of frequency dividers. The division factors of the 11.1 ... 11.M frequency dividers are selected from a number of 1,2,3 ... B completely or with gaps, where B is a finite number, the maximum division coefficient selected from the conditions for a given range of operating frequencies. When the frequency division coefficient of one of the dividers is equal to 1, frequency conversion does not occur and the input signal through the power divider is fed to the corresponding phase correlator. The number of frequency dividers 11.1 ... 11.M, delay lines 12.1 ... 12.M, phase correlators 13.1 ... 13.M is determined by the operating band of the device and the required frequency measurement accuracy. Suppose that the division coefficient of the frequency divider 11.1 is m ₁ , the frequency divider 11.2 is m ₂ , the frequency divider 11.3 is m ₃ , and so on up to m _M , and m _M >...> m ₃ > m ₂ > m ₁ . At the same time, at the outputs of the dividers 11.1, 11.2, ..., 11.M frequencies, we obtain signals with frequencies ω ₀ / m ₁ , ω ₀ / m ₂ , ..., ω ₀ / m _m . We also assume that the delay lines 12.1,12.2, ..., 12.M are identical and have an equal delay time equal to τ. Then the phase raids acquired by the signals at the outputs of the delay lines 12.1, 12.2, ..., 12. M will be: θ ₁ = ω ₀ τ / m ₁ , θ ₂ = ω ₀ τ / m ₂ , ..., θ _m = ω ₀ τ / m _m . At the same time, phase raids acquired by the signals at the outputs of the delay lines in the prototype device can be described by the expressions: Δ ₁ = ω ₀ τ ₁ , Δ ₂ = ω ₀ τ ₂ , ..., Δ _m = ω ₀ τ _m . Taking into account that τ ₁ = τ / m ₁ , τ ₂ = τ / m ₂ , ..., τ _m = τ / m _m , we come to the identity of the expressions for the phase incursion of signals at the output of the delay lines in the proposed device and the prototype device . The delay time of the delay lines 12.1,12.2, ..., 12.M-1 and the division factors of the dividers 11.1,11.2, ..., 11.M-1 frequencies are selected so that the correlation characteristics of the phase correlators 13.1,13.2, ..., 13.M-1 had a steepness providing a given accuracy of frequency measurement. The delay time of the delay line 12.M can be chosen identical to the delay lines 12.1,12.2, ..., 12.M-1, and the uniqueness of the correlation characteristic of the phase correlator 13.M will be provided by the choice of the frequency division coefficient divider 11.M of the frequency. This allows you to unify the applicable delay lines. The delayed in the delay lines 12.1,12.2, ..., 12.M and unrestrained signals are fed to the corresponding phase correlators 13.1,13.2, ..., 13.M. The phase correlators 13.1,13.2, ..., 13.M form the following discriminatory characteristics, the appearance of which is shown in figure 4 (DFD ₁ - 3, DFD ₂ - 2, DFD _M - 1):

(4) $$\mathrm{<figure-callout\; id="1"\; label="D\; F\; D"\; filenames="00000011.png,00000013.png"\; state="\{\{state\}\}">D\; </figure-callout>}F{D}_{}{}_1=A_1(1+\cos (\frac{\omega \tau }{m_1}))$$

(4)

(5) $$\mathrm{<figure-callout\; id="2"\; label="D\; F\; D"\; filenames="00000011.png,00000014.png"\; state="\{\{state\}\}">D\; </figure-callout>}F{D}_{}{}_2=A_2(1+\cos (\frac{\omega \tau }{m_2}))$$

(5)

(6) $$DF{D}_M=A_M(1+\cos (\frac{\omega \tau }{m_M}))$$

(6)

where A ₁ , A ₂ , .., A _M are the proportionality coefficients;

m ₁ , m ₂ , .., m _M - frequency division factors;

τ is the delay time of the delay line;

ω is the circular frequency.

 The correlator 13.M, which is in the same channel with the frequency divider 11.M, has an unambiguous but relatively gentle discriminating characteristic in the operating frequency range, for this reason the correlator 13.M is used for a rough estimate of the frequency of the input signal. At the same time, phase correlators 13.1,13.2, ..., 13.M-1 have ambiguous correlation functions, the steepness of which is higher compared to the steepness of the discriminatory characteristics of the correlator 13.M. Correlators 13.1,13.2, ..., 13.M-1 are used to improve the accuracy of measuring the frequency of the input signal. The computing device 14 is designed to determine the frequency of the input signal from the voltages from the phase correlators 13.1,13.2, ..., 13.M.

A broadband frequency meter can also be implemented using frequency dividers and frequency multipliers. Input microwave signal with frequency ω₀ enters through an amplifier-limiter 15 to a bandpass filter 16, limiting the input frequency band. Next, the signal is fed to the in-phase divider 17 microwave power, where there is a division of the input signal power into N + M equal parts. Frequency multipliers 18.1 ... 18.N carry out the multiplication function and can be performed on the basis of a diode or transistor operating in nonlinear mode, or in the form of a specialized microcircuit. Frequency dividers 19.1 ... 19.M carry out the function of frequency division and can be performed on the basis of nonlinear elements or specialized microcircuits. The multiplication coefficients of frequency multipliers 18.1 ... 18.N are selected from the series 1,2,3 ... C completely or with omissions, where C is a finite number, the limiting multiplication coefficient selected from the condition of physical realizability or the given accuracy of frequency measurement. The division factors of the frequency dividers 19.1 ... 19.M are selected from a number of 1,2,3 ... D completely or with gaps, where D is a finite number, the maximum division coefficient selected from the conditions for a given range of operating frequencies. When the frequency multiplication factor of one of the multipliers or the division coefficient of one of the frequency dividers is equal to 1, the frequency conversion does not occur, and the input signal through the power divider is fed to the corresponding phase correlator. The number of frequency multipliers 18.1 ... 18.N, frequency dividers 19.1 ... 19.M, delay lines 20.1 ... 20.N + M, phase correlators 21.1 ... 21.N + M is determined by the operating band of the device and the required accuracy of frequency measurement. Assume that the multiplier coefficient of the frequency multiplier 18.1 is n₁, frequency multiplier 18.2 is equal to n₂, and so on to n_N, and n_N> ...> n₃> n₂> n₁. We also assume that the division coefficient of the frequency divider 19.1 is m₁, frequency divider 19.2 is equal to m₂, and so on to m_M, and m_M> ...> m₃> m₂> m₁. In this case, at the outputs of the multipliers 18.1,18.2, ..., 18.N of the frequency, we obtain signals with frequencies n₁ω₀, n₂ω₀, ..., n_Nω₀ and at the outputs of the dividers 19.1,19.2, ..., 19.M frequencies we obtain signals with frequencies ω₀/ m₁, ω₀/ m₂, ..., ω₀/ m_M. We also assume that the delay lines 20.1,20.2, ..., 20.N + M are identical and have the same delay time equal to τ. Then the phase raids acquired by the signals at the outputs of the delay lines 20.1,20.2, ..., 20.N + M will be: θ₁= n₁ω₀τ, θ₂= n₂ω₀τ, ..., θ_N= n_Nω₀τ, θ_{N + 1}= ω₀τ / m₁, ..., θ_M= ω₀τ / m_M. At the same time, phase raids acquired by the signals at the outputs of the delay lines in the prototype device can be described by the expressions: Δ₁= ω₀τ₁, ∆₂= ω₀τ₂, ..., ∆_N= ω₀τ_N, ..., ∆_{N + 1}= ω0 / τ_{N + 1}, ..., ∆_M= ω0 / τ_M. Whereas τ₁= n₁τ, τ₂= n₂τ, ..., τ_N= n_Nτ, τ_{N + 1}= τ / m_{N + 1}, ..., τ_M= τ / m_M, we come to the identity of the expressions for the phase incursion of signals at the output of the delay lines in the proposed device and the prototype device. In this case, the passage of a signal with a frequency nω₀ through the delay line τ in the proposed device is equivalent to the passage of a signal with a frequency ω₀ through the delay line nτ in the prototype device, which allows the use of a shorter and more compact delay line in the proposed device. The delay time of the delay lines 20.1,20.2, ..., 20.N + M-1, the multiplication factors of the multipliers 18.1,18.2, ..., 18.N frequencies, the division factors of the dividers 19.1,19.2, ..., 19.M-1 frequencies are chosen so so that the correlation characteristics of the phase correlators 21.1,21.2, ..., 21.N + M-1 have a slope that provides a given frequency measurement accuracy. The delay time of the delay line 20.N + M can be chosen identical to the delay lines 20.1,20.2, ..., 20.N + M-1, and the uniqueness of the correlation characteristic of the phase correlator 21.N + M will be provided by the choice of the frequency division coefficient divider 19.M frequency. The delayed in the delay lines 20.1,20.2, ..., 20.N + M and unrestrained signals are supplied respectively to the phase correlators 21.1,21.2, ..., 21.N + M. The phase correlators 21.1,21.2, ..., 21.N + M form the following discriminatory characteristics, the form of which is shown in figure 4 (DMDF₁ - 2, DMDF_N - 3, DMDF_{N + M} - 1):

(7) $$D\mathrm{<figure-callout\; id="1"\; label="M\; D\; F"\; filenames="00000011.png,00000013.png"\; state="\{\{state\}\}">M\; </figure-callout>}D{F}_{}{}_1=A_1(1+\cos ({\mathrm{<figure-callout\; id="1"\; label="n"\; filenames="00000011.png,00000013.png"\; state="\{\{state\}\}">n</figure-callout>}}_1\omega \tau ))$$

(7)

...

(8) $$DMD{F}_N=A_N(1+\cos (n_N\omega \tau ))$$

(8)

(9) $$DMD{F}_{N+M}=A_{N+M}(1+\cos (\frac{\omega \tau }{m_{N+M}}))$$

(9)

where A ₁ , .., A _N , A _{N + M} are the proportionality coefficients;

n ₁ , ..., n _N - frequency multiplication factors;

m ₁ , ..., m _M - frequency division factors;

τ is the delay time of the delay line;

ω is the circular frequency.

 The correlator 21.N + M has an unambiguous (curve 1), but relatively flat discriminatory characteristic in the operating frequency range, for this reason the correlator 21.N + M serves for a rough estimate of the frequency of the input signal. At the same time, phase correlators 21.1,21.2, ..., 21.N + M-1 have ambiguous correlation functions (curves 2 and 3, respectively), the steepness of which is higher than the steepness of the discriminatory characteristics of the correlator 21.N + M. Correlators 21.1, 21.2, ..., 21.N + M-1 are used to increase the accuracy of measuring the frequency of the input signal. Computing device 22 is designed to determine the frequency of the input signal from the voltage from the phase correlators 21.1,21.2, ..., 21.N + M.

From the described operating principles, it is clear that the number of channels, including a frequency divider or multiplier, a delay line, a phase correlator, can be changed to achieve a given operating frequency range and frequency measurement accuracy.

List of sources used

1. Schmidt, R.O. Simultaneous signals IFM receiver using plural delay line correlators. U.S. Patent No. 5,440,228

2. Tsui, J.B.Y., Hedge, J.N. Instantaneous frequency measurement (IFM) receiver with two signals capability. U.S. Patent No. 5,291,125

Claims (3)

1. A broadband frequency meter of microwave signals on delay lines with preliminary frequency conversion, consisting of a series-connected input amplifier-limiter, a band-pass microwave filter, an in-phase microwave power divider, and also N delay lines, N phase correlators, the outputs of which are connected to the computational device, characterized in that it additionally introduced N frequency multipliers, the multiplication coefficients of which are selected from a number of 1, 2, 3 ... A completely or with gaps, while the inputs of the multiplier of the first frequency are connected to the corresponding outputs of the in-phase microwave power divider, the first outputs of the frequency multipliers are connected to the inputs of the corresponding delay lines, and the second outputs are connected to one of the inputs of the corresponding phase correlators, the outputs of the delay lines are connected to the other input of the corresponding phase correlators. 2. A broadband frequency meter of microwave signals on delay lines with preliminary frequency conversion, consisting of a series input amplifier-limiter, a pass-through microwave filter, an in-phase microwave power divider, as well as M delay lines, M phase correlators, the outputs of which are connected to the computational device, characterized in that it additionally introduced M frequency dividers, the division coefficients of which are selected from a number of 1, 2, 3 ... B completely or with gaps, while the inputs of the frequency dividers you are connected to respective outputs in-phase microwave power divider, the first outputs of frequency dividers are connected to respective inputs of the delay lines and the second outputs to one input of respective phase correlator, the outputs of delay lines are connected to respective other input of the phase correlators. 3. A broadband frequency meter of microwave signals on delay lines with preliminary frequency conversion, consisting of a series input amplifier-limiter, a pass-through microwave filter, an in-phase microwave power divider, as well as N + M delay lines, N + M phase correlators, outputs which are connected to a computing device, characterized in that it additionally includes N frequency multipliers, the multiplication coefficients of which are selected from a number of 1, 2, 3 ... C completely or with gaps, M frequency dividers, coe the division factors of which are selected from a number of 1, 2, 3 ... D completely or with gaps, while the inputs of the frequency multipliers and frequency dividers are connected to the corresponding outputs of the in-phase microwave power divider, the first outputs of the frequency multipliers are connected to the inputs of the corresponding delay lines, and the second outputs to one of the inputs of the corresponding phase correlators, the first outputs of the frequency dividers are connected to the inputs of the corresponding delay lines, and the second outputs to one of the inputs of the corresponding phase correlators, the outputs of the delay lines The ki are connected to another input of the corresponding phase correlators.

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