CN109286422B - Intelligent separation device and method for adjusting noise coefficient of radio frequency link - Google Patents

Intelligent separation device and method for adjusting noise coefficient of radio frequency link Download PDF

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CN109286422B
CN109286422B CN201811358037.6A CN201811358037A CN109286422B CN 109286422 B CN109286422 B CN 109286422B CN 201811358037 A CN201811358037 A CN 201811358037A CN 109286422 B CN109286422 B CN 109286422B
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adjustable attenuator
power
power divider
gain
signal
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CN109286422A (en
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饶路华
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Ruijie Networks Co Ltd
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Ruijie Networks Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535—Control of relay amplifier gain
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Noise Elimination (AREA)

Abstract

The invention discloses an intelligent division device and a method for adjusting noise coefficient of a radio frequency link, which are used for solving the problem of the prior artThe technical problem of high background noise in a radio frequency link exists in the art. The intelligent distribution device comprises: a signal input for inputting a signal; the N-stage power dividing circuit is arranged in a symmetrical structure and is used for distributing input signals into M with the same noise coefficientNOutputting the signal; wherein, N is a positive integer, and M is the number of signal output paths of each power divider in the N-stage power dividing circuit; mNAnd each signal output end outputs one output signal.

Description

Intelligent separation device and method for adjusting noise coefficient of radio frequency link
Technical Field
The present invention relates to the field of communications, and in particular, to an intelligent distribution device and a method for adjusting a noise factor of a radio frequency link.
Background
With the development of communication technology, communication products have shown a trend of diversified development.
At present, on one hand, the cost of communication products is expected to be lower and better, and on the other hand, the performance of the communication products is expected to be better and better, and if the price of the communication products is expected to be low and the wireless network (wifi) packet loss rate is expected to be low, products with zero roaming intelligent score are produced.
The intelligent division product mainly uses 1 wireless access point, changes a radio frequency link from one path to multiple paths by continuously adding a power divider and an amplifier, and finally accesses different rooms. So that the cost of the intelligent product is as low as possible and the performance is as good as possible.
However, since the intelligent distribution product changes an original radio frequency link into a plurality of links through the power divider, the more times the signal is divided, the weaker the signal. In order to ensure the strength of the signal after power division, a power amplifier is usually added, but the addition of the power amplifier raises the background noise of the radio frequency link, thereby reducing the sensitivity of the intelligent division product.
In view of this, how to reduce the background noise in the radio frequency link becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention provides an intelligent distribution device and a method for adjusting a noise coefficient of a radio frequency link, which are used for solving the technical problem of high background noise in the radio frequency link in the prior art.
In a first aspect, to solve the above technical problem, a technical solution of an intelligent product provided in an embodiment of the present invention is as follows:
a signal input for inputting a signal;
the N-stage power dividing circuit is arranged in a symmetrical structure and is used for distributing the input signals to M with the same noise coefficientNOutputting the signal; wherein, N is a positive integer, and M is the number of signal output paths of each power divider in the N-stage power divider circuit;
MNa signal outputAnd each signal output end outputs one output signal.
Optionally, the N-stage power dividing circuit includes:
the ith power dividing circuit has Mi-1A power divider; wherein i is a positive integer not greater than N;
an adjustable attenuator is connected between any two adjacent power dividers which are electrically connected between the ith power dividing circuit and the (i + 1) th power dividing circuit; each adjustable attenuator is used for adjusting the parameter of the corresponding adjustable attenuator according to a preset rule so as to enable the noise coefficient of each signal output end to be equal.
Optionally, the preset rule specifically includes:
the parameter of each adjustable attenuator is the difference between the first gain and the standard gain; the first gain is a gain difference between the input signal passing through the corresponding signal output end and an output end of a power divider of a higher-level power divider circuit, and the standard gain is a value which is the smallest with the gain difference of an adjustable attenuator in each power divider circuit of the same level as the adjustable attenuator.
Optionally, the intelligent distribution device further includes a power amplifier connected in series between the power divider and the corresponding adjacent adjustable attenuator, and configured to amplify the signal output by the adjacent power divider, and transmit the amplified signal to the adjacent adjustable attenuator.
Optionally, the power divider is a two-power divider, a three-power divider, or a four-power divider.
In a second aspect, an embodiment of the present invention provides a method for adjusting a noise figure of a radio frequency link, where the method is applied in an intelligent device, and the method includes:
acquiring a gain value of an output end of each power divider in the intelligent distribution device; wherein, the intelligent device is provided with a signal input end and an MNThe N-stage power dividing circuit at the signal output end is set to be in a symmetrical structure, N is an integer, and M is the number of signal output paths of each power divider in the N-stage power dividing circuit;
based on the gain value of the output end of each power divider, gradually adjusting the parameters of each adjustable attenuator in the intelligent divider from the nth power divider to the first power divider until the adjustable attenuators between the first power divider and the second power divider are adjusted, so that the noise coefficients of each signal output end of the intelligent divider are equal.
Optionally, the step of adjusting parameters of each adjustable attenuator in the intelligent device includes:
calculating the gain difference of each adjustable attenuator in the current-stage power distribution circuit according to the gain values of the output ends corresponding to the front and the rear power dividers which are electrically connected with each adjustable attenuator in the current-stage power distribution circuit;
screening out the minimum gain difference from the gain differences of all the adjustable attenuators in the current-stage power circuit;
performing difference operation on the gain difference of each adjustable attenuator in the current-stage power distribution circuit and the minimum gain difference to obtain an adjustment parameter of each adjustable attenuator in the current-stage power distribution circuit;
and adjusting the corresponding adjustable attenuator according to the adjustment parameter of each adjustable attenuator in the current-stage power distribution circuit.
Optionally, before adjusting the corresponding adjustable attenuator according to the adjustment parameter of each adjustable attenuator in the current-stage power distribution circuit, the method further includes:
and if the adjustable attenuator to be adjusted is the adjustable attenuator corresponding to the minimum gain difference, not adjusting the parameters of the adjustable attenuator to be adjusted.
Optionally, the power divider includes:
any one of a two-power divider, a three-power divider and a four-power divider.
Through the technical solutions in one or more of the above embodiments of the present invention, the embodiments of the present invention have at least the following technical effects:
in the embodiment provided by the invention, the signal input end M is connected with the signal input endNThe intelligent device of each signal output end is arranged as an N-level power divider with a symmetrical structureA circuit for distributing the input signal to M having the same noise figureNAnd outputting signals, wherein N is a positive integer, and M is a signal output path of each power divider in the N-level power dividing circuit, so that the noise coefficients of each branch in the intelligent divider are equal, the gain attenuation of each branch is basically consistent, and the technical effect of reducing the overall background noise of the intelligent divider is realized.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent distribution device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a 2-stage two-power divider circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a 3-stage two-power divider circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a 2-stage two-power divider circuit with a power amplifier according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for adjusting a noise figure of a radio frequency link according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an intelligent distribution device and a method for adjusting a noise coefficient of a radio frequency link, which aim to solve the technical problem of high background noise in the radio frequency link in the prior art.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
provided is an intelligent score apparatus, including: a signal input for inputting a signal; the N-stage power dividing circuit is arranged in a symmetrical structure and is used for distributing input signals into M with the same noise coefficientNOutputting the signal; wherein, N is a positive integer, M is the signal output path number of each power divider in the N-level power dividing circuit; mNAnd each signal output end outputs one path of output signal.
Since in the above scheme, there will be one signal input terminal and MNThe intelligent device of each signal output end is provided with an N-stage power dividing circuit with a symmetrical structure and is used for dividing input signals into M with the same noise coefficientNAnd outputting signals, wherein N is a positive integer, and M is the number of signal output paths of each power divider in the N-level power dividing circuit, so that the noise coefficients of each branch in the intelligent dividing device are equal, the gain attenuation of each branch is basically consistent, and the technical effect of reducing the overall background noise of the intelligent dividing device is realized.
In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present invention are detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features in the embodiments and examples of the present invention may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides an intelligent distribution device 10, where the intelligent distribution device 10 includes:
a signal input terminal 101 (not shown) for inputting a signal;
an N-stage power dividing circuit 102 arranged in a symmetrical structure for dividing the input signal into M with the same noise coefficientNOutputting the signal; wherein, N is a positive integer, and M is the number of signal output paths of each power divider in the N-stage power dividing circuit;
MNand signal output terminals 103 (not shown), each of which outputs an output signal.
When an input signal is input from the signal input terminal 101 of the intelligent distribution device 10, the input signal is divided by the N-level power dividing circuit 102 having a symmetrical structure in the intelligent distribution device 10, so that the N-level power dividing circuit 102 distributes the input signal to M with the same noise coefficientNThe signal 103 is output, so that the gain attenuation of the branch corresponding to each signal output end is basically consistent, and the technical effect of reducing the overall noise floor of the intelligent division device 10 is achieved.
It should be understood that, in fig. 1, only the power divider is shown in each power dividing circuit for ease of understanding, but in practical applications, only the power divider is not shown in each power dividing circuit.
Optionally, the N-stage power dividing circuit 102 includes:
the ith power dividing circuit has Mi-1 A power divider 1021; wherein i is a positive integer not greater than N;
an adjustable attenuator 1022 is connected between any two adjacent power dividers which are electrically connected between the ith power dividing circuit and the (i + 1) th power dividing circuit; each adjustable attenuator 1022 is configured to adjust a parameter of the corresponding adjustable attenuator according to a preset rule, so that the noise figure of each signal output end is equal.
For example, referring to fig. 2, taking the 2-stage binary power dividing circuit 102 as an example (i.e., N is 2, M is 2), when i is 1, the 1 st stage power dividing circuit has 21-1When i is 2, the 2 nd stage power division circuit has 22-12 power dividers 1021 are provided, that is, the 1 st power divider in the 2 nd power divider 102 has 1 power divider 1021, the 2 nd power divider has 2 power dividers 1021, an adjustable attenuator 1022 is connected between any two adjacent power dividers electrically connected between the 1 st power divider and the 2 nd power divider, and the adjustable attenuator 1022 is one of the components of the 2 nd power divider. Moreover, each adjustable attenuator 1022 can adjust the parameter of the corresponding adjustable attenuator according to a preset rule, so that the noise coefficients of each signal output end of the intelligent distribution device are the same.
The input end of each power divider in other power dividing circuits except the 1 st-level power dividing circuit is provided with an adjustable attenuator, and the parameters of the adjustable attenuators are adjusted according to a preset rule, so that the noise coefficients of each signal output end of the intelligent dividing device are the same, the gain attenuation of the branch corresponding to each signal output end is basically consistent, and the technical effect of reducing the overall bottom noise of the intelligent dividing device is achieved.
The preset rule is specifically as follows:
the parameter of each adjustable attenuator 1022 is the difference between the first gain and the standard gain; the first gain is a gain difference between an input signal passing through a corresponding signal output terminal and an output terminal of the power divider 1021 of the upper-level power dividing circuit, and the standard gain is a value that is the smallest as a gain difference of an adjustable attenuator in a power dividing circuit of the same level as each adjustable attenuator.
Referring to fig. 3, taking a 3-stage power dividing circuit as an example, when calculating the parameters of the adjustable attenuator, the parameters are calculated from the final power dividing circuit step by step until the adjustable attenuator in the second power dividing circuit is calculated, so that the parameter adjustment of the adjustable attenuator in the previous stage does not affect the adjustment of the adjustable attenuator in the next stage.
The first step is as follows: the first gains of the adjustable attenuators in the 3 rd power dividing circuit in fig. 3 are calculated, and the minimum first gain is selected as the standard gain, the parameters of the adjustable attenuator corresponding to the standard gain do not need to be adjusted, and the parameters of the other adjustable attenuators are adjusted to the difference between the respective first gains and the standard gain.
For example, to calculate the parameters of the adjustable attenuator 23, it is necessary to calculate the first gain and the standard gain of the adjustable attenuator 23.
Specifically, after an input signal is divided into 8 output signals (i.e., output signals corresponding to signal output terminals 1 to 8) by the 3-stage power dividing circuit, a first gain of the adjustable attenuator 23 is a gain difference between the signal output terminal 1 and an output terminal 1 or an output terminal 2 of the power divider 12 of the higher-stage power dividing circuit of the adjustable attenuator 23, which is denoted as k 1; the first gain of the adjustable attenuator 24 is the gain difference between the signal output terminal 3 or the output terminal 4 and the output terminal 2 of the power divider 12 of the upper-stage power dividing circuit of the adjustable attenuator 24, and is marked as k 2; the first gains of the adjustable attenuators 25 and 26 are denoted as k3 and k4, respectively, and the calculation process is similar to that of k1 and k2, and is not described again.
If the value of k3 in k1-k 4 is the minimum, k3 is used as the standard gain, and then the parameters of the adjustable attenuator 25 corresponding to k3 are not required to be adjusted, the parameters of the adjustable attenuator 23 are adjusted to k1-k3, the parameters of the adjustable attenuator 24 are adjusted to k2-k3, and the parameters of the adjustable attenuator 26 are adjusted to k4-k 3.
After the parameters of each adjustable attenuator of the 3 rd-level power dividing circuit are adjusted, the parameters of each adjustable attenuator of the 2 nd-level power dividing circuit can be adjusted.
The second step is that: the first gains of the adjustable attenuators in the 2 nd power division circuit in fig. 3 are calculated, and the minimum first gain is selected as the standard gain, the parameters of the adjustable attenuator corresponding to the standard gain do not need to be adjusted, and the parameters of the other adjustable attenuators are adjusted to the difference between the respective first gains and the standard gain.
For example, to calculate the parameters of the adjustable attenuator 21, it is necessary to calculate the first gain and the standard gain of the adjustable attenuator 21.
Specifically, after an input signal is divided into 8 output signals (i.e., output signals corresponding to signal output ends 1 to 8) by the 3-stage power dividing circuit, a first gain of the adjustable attenuator 21 is a gain difference between the signal output end 1 and an output end 1 of a power divider 11 of a higher-stage power dividing circuit of the adjustable attenuator 21, and is denoted as k 5; the first gain of the adjustable attenuator 22 is the gain difference between any one of the signal output terminals 5 to 8 and the output terminal 2 of the power divider 11 of the upper power dividing circuit of the adjustable attenuator 22, and is denoted as k 6.
If the value of k6 in k5 to k6 is the minimum, k6 is used as the standard gain of the 2 nd-stage power dividing circuit, the parameter of the adjustable attenuator 22 corresponding to k6 does not need to be adjusted, and the parameter of the adjustable attenuator 21 is adjusted to k5 to k 6.
So far, the parameters of the adjustable attenuator of the 3-stage power dividing circuit shown in fig. 3 are adjusted, so that the noise coefficients of the signals output by any one of the signal output terminals 1-8 are equal.
Optionally, the smart partition device 10 further includes: and the power amplifier 1023 is connected between the power divider and the corresponding adjacent adjustable attenuator 1022 in series and is used for amplifying the signal output by the adjacent power divider 1021 and transmitting the amplified signal to the adjacent adjustable attenuator 1022.
For example, taking fig. 4 as an example, a power amplifier 1023 is connected in series between an adjustable attenuator 1022 (i.e., the adjustable attenuator 1022 located at the upper part of fig. 4) in a branch corresponding to the signal output terminal 1 or the signal output terminal 2 and a power divider 1021 in the 1 st-stage power dividing circuit, so that the power amplifier 1023 can amplify a signal at an output terminal corresponding to the power divider 1021 in the 1 st-stage power dividing circuit and then transmit the amplified signal to the adjacent adjustable attenuator 1022 (i.e., the adjustable attenuator 1022 located at the upper part of fig. 4); similarly, a power amplifier 1023 is also connected in series between the adjustable attenuator 1022 (i.e. the adjustable attenuator 1022 located at the lower part of fig. 4) in the branch corresponding to the signal output terminal 3 or the signal output terminal 4 and the power divider 1021 in the 1 st stage power dividing circuit, and the signal output from the other output terminal of the power divider 1021 in the 1 st stage power dividing circuit is amplified and then transferred to the adjacent adjustable attenuator 1022 (i.e. the adjustable attenuator 1022 located at the lower part of fig. 4).
It should be noted that the power amplifier 1023 may be set according to the signal strength of the input signal after power division, that is, the power amplifier 1023 may not be set if the signal strength after power division is enough; if the signal strength after power division is weak, the power amplifier 1023 needs to be arranged.
The power divider described in the above embodiments may be any one of a two-power divider, a three-power divider, and a four-power divider.
Based on the same inventive concept, an embodiment of the present invention provides a method for adjusting a noise figure of a radio frequency link, please refer to fig. 5, where the method includes:
step 501: acquiring a gain value of an output end of each power divider in the intelligent distribution device; wherein, the intelligent device is provided with a signal input end and an MNThe N-stage power dividing circuit at the signal output end is set to be of a symmetrical structure, N is an integer, and M is the number of signal output paths of each power divider in the N-stage power dividing circuit to acquire the gain value of the output end of each power divider;
step 502: based on the gain value of the output end of each power divider, the parameters of each adjustable attenuator in the intelligent divider are adjusted step by step from the nth power divider to the first power divider until the adjustable attenuators between the first power divider and the second power divider are adjusted, so that the noise coefficients of each signal output end of the intelligent divider are equal.
The parameters of each adjustable attenuator in the intelligent distribution device are adjusted step by step, and the gain difference of each adjustable attenuator in the current-stage power distribution circuit can be calculated according to the gain values of the output ends corresponding to the front and rear power distributors electrically connected with each adjustable attenuator in the current-stage power distribution circuit; then, screening out the minimum gain difference from the gain differences of all the adjustable attenuators in the current-stage power circuit; performing difference operation on the gain difference of each adjustable attenuator in the current-stage power distribution circuit and the minimum gain difference to obtain an adjustment parameter of each adjustable attenuator in the current-stage power distribution circuit; and finally, adjusting each adjustable attenuator in the current-stage power distribution circuit according to the adjustment parameters. And if the adjustable attenuator to be adjusted is the adjustable attenuator corresponding to the minimum gain difference, not adjusting the parameters of the adjustable attenuator to be adjusted.
For example, taking fig. 3 as an example, first, the gain values of the output ends of the power divider 11 to the power divider 17 are collected, for example, the gain value of the output end 1 of the power divider 11 is marked as G111The gain value of the output end 2 of the power divider 11 is recorded as G112And the gain values of the output ends of other power dividers are analogized.
Then, calculating the first gain of each adjustable attenuator step by step from the adjustable attenuator in the 3 rd-stage power dividing circuit to the 1 st-stage power dividing circuit, taking the minimum first gain in each stage of power dividing circuit as the standard gain of the stage of power dividing circuit, adjusting the parameters of other adjustable attenuators except the adjustable attenuator corresponding to the standard gain, and the parameters of other adjustable attenuators are the difference between the first gain of the corresponding adjustable attenuator and the standard gain. For example, the first gain of the adjustable attenuator 23 in the 3 rd power division stage is k1 ═ G141-G121The first gain of the adjustable attenuator 24 is k2 ═ G151-G122The first gains of the adjustable attenuators 25 and 26 are respectively denoted as k3 and k4, and the calculation manner is similar to that of k1 and k2, and is not described again. If the value of k2 of k1 to k4 is the minimum, then k2 is used as the standard gain, and the parameters of the adjustable attenuator 24 corresponding to k2 are not required to be adjusted, the parameters of the adjustable attenuator 23 are adjusted to k1-k2, the parameters of the adjustable attenuator 25 are adjusted to k3-k2, and the parameters of the adjustable attenuator 26 are adjusted to k4-k 2. Among them, because of G141And G142Are equal, so G141Can also be replaced by G142And the others are similar.
After the parameters of the adjustable attenuator in the 3 rd level power dividing circuit are adjusted, the parameters of the adjustable attenuator in the 2 nd level power dividing circuit are adjusted. Specifically, first, the first gain k5 of the adjustable attenuation 21 is G141-G111The first gain of the adjustable attenuator 22 is k6 ═ G161-G112. If k5 is smaller than k6, k5 is the standard gain of the 2 nd power dividing circuit, and the parameters of the adjustable attenuator 21 corresponding to k5 need not be adjusted, and the parameters of the adjustable attenuator 22 need only be adjusted to k6-k 5. So far, the parameters of the adjustable attenuator in the 3-stage power dividing circuit in fig. 3 are adjusted, so that the noise coefficients of each signal output end are the same.
Further, the power divider in the above method may be any one of a two-power divider, a three-power divider, and a four-power divider.
In the embodiment provided by the invention, the signal input end M is connected with the signal input endNThe intelligent device of each signal output end is provided with an N-stage power dividing circuit with a symmetrical structure and is used for dividing input signals into M with the same noise coefficientNAnd outputting signals, wherein N is a positive integer, and M is the number of signal output paths of each power divider in the N-level power dividing circuit, so that the noise coefficients of each branch in the intelligent dividing device are equal, the gain attenuation of each branch is basically consistent, and the technical effect of reducing the overall background noise of the intelligent dividing device is realized.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (6)

1. An intelligent scoring device, comprising:
a signal input for inputting a signal;
the N-stage power dividing circuit is arranged in a symmetrical structure and is used for distributing the input signals to M with the same noise coefficientNOutputting the signal; wherein, N is a positive integer, and M is the number of signal output paths of each power divider in the N-stage power divider circuit;
MNeach signal output end outputs an output signal;
wherein, the N-level power dividing circuit comprises:
the ith power dividing circuit has Mi-1A power divider; wherein i is a positive integer not greater than N;
an adjustable attenuator is connected between any two adjacent power dividers which are electrically connected between the ith power dividing circuit and the (i + 1) th power dividing circuit; each adjustable attenuator is used for adjusting the parameters of the corresponding adjustable attenuator according to a preset rule so as to enable the noise coefficients of the signal output ends to be equal;
the preset rule is specifically as follows:
the parameter of each adjustable attenuator is the difference between the first gain and the standard gain; the first gain is a gain difference between the input signal passing through the corresponding signal output end and an output end of a power divider of a higher-level power divider circuit, and the standard gain is a value which is the smallest with the gain difference of an adjustable attenuator in each power divider circuit of the same level as the adjustable attenuator.
2. The apparatus according to claim 1, further comprising a power amplifier connected in series between the power divider and the corresponding adjacent adjustable attenuator for amplifying the signal outputted from the adjacent power divider and transmitting the amplified signal to the adjacent adjustable attenuator.
3. The apparatus according to claim 2, wherein the power divider is a two-power divider, a three-power divider, or a four-power divider.
4. A method for adjusting noise coefficient of radio frequency link is applied to intelligent device, which is characterized in that the method comprises:
acquiring a gain value of an output end of each power divider in the intelligent distribution device; wherein, the intelligent device is provided with a signal input end and an MNAn N-stage power dividing circuit at the signal output end and arranged toThe symmetrical structure is adopted, N is an integer, and M is the number of signal output paths of each power divider in the N-stage power dividing circuit;
based on the gain value of the output end of each power divider, gradually adjusting the parameters of each adjustable attenuator in the intelligent divider from the nth-stage power divider to the first-stage power divider until the adjustable attenuators between the first-stage power divider and the second-stage power divider are adjusted, so that the noise coefficients of each signal output end of the intelligent divider are equal;
wherein, adjust the parameter of every adjustable attenuator in the intelligent device step by step, include:
calculating the gain difference of each adjustable attenuator in the current-stage power distribution circuit according to the gain values of the output ends corresponding to the front and the rear power dividers which are electrically connected with each adjustable attenuator in the current-stage power distribution circuit;
screening out the minimum gain difference from the gain differences of all the adjustable attenuators in the current-stage power circuit;
performing difference operation on the gain difference of each adjustable attenuator in the current-stage power distribution circuit and the minimum gain difference to obtain an adjustment parameter of each adjustable attenuator in the current-stage power distribution circuit;
and adjusting the corresponding adjustable attenuator according to the adjustment parameter of each adjustable attenuator in the current-stage power distribution circuit.
5. The method of claim 4, wherein before adjusting the corresponding adjustable attenuator according to the adjustment parameter of each adjustable attenuator in the current-stage power circuit, further comprising:
and if the adjustable attenuator to be adjusted is the adjustable attenuator corresponding to the minimum gain difference, not adjusting the parameters of the adjustable attenuator to be adjusted.
6. The method of claim 5, wherein the power divider comprises:
any one of a two-power divider, a three-power divider and a four-power divider.
CN201811358037.6A 2018-11-15 2018-11-15 Intelligent separation device and method for adjusting noise coefficient of radio frequency link Active CN109286422B (en)

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