CN112904093A - Phase simulation equipment - Google Patents

Phase simulation equipment Download PDF

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CN112904093A
CN112904093A CN201911134674.XA CN201911134674A CN112904093A CN 112904093 A CN112904093 A CN 112904093A CN 201911134674 A CN201911134674 A CN 201911134674A CN 112904093 A CN112904093 A CN 112904093A
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network
resistor
capacitor
inductor
impedance
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CN112904093B (en
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王天友
贾泳杰
张磊
赵伟
张�浩
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Beijing Railway Signal Co Ltd
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Beijing Railway Signal Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio

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Abstract

The application discloses a phase simulation device, which comprises a two-port network and a load network. The two-port network comprises a network input end and a network output end, wherein the network input end is used for being connected with the signal output end of the network analyzer, and the input impedance of the two-port network is equal to the output impedance of the two-port network and is the same as the output impedance of the signal output end; the load network is connected with the network output end, and the impedance of the load network is the same as that of the signal output end. Through the configuration to the two-port network, can make it satisfy the requirement of different impedance and decrement to can utilize this phase simulation device to simulate real object CAU when measuring and adjusting CAU, because this phase simulation device can not send high-power radiation, consequently when satisfying the requirement of measuring and adjusting, can not cause harm to experimenter's health.

Description

Phase simulation equipment
Technical Field
The application relates to the technical field of trains, in particular to a phase simulation device.
Background
An ATP (Automatic Train Protection) system is an important system on a Train, and is used to ensure the driving safety of the Train, and is used to read the line information of a ground transponder, such as altitude, gradient, kilometer post, front speed limit information, and the like, so as to generate a driving speed curve of the Train according to the line information, so that the Train can safely drive according to the curve.
When a train with an ATP system passes through, a CAU (Compact Antenna Uint) at the bottom of the train sends downlink microwaves with specific frequency f1 MHz to activate a swept transponder, the activated transponder reversely transmits line information of f2 MHz through an uplink, the line information is transmitted to a BTM (Balise Transmission Module) to analyze messages, the BTM checks and decodes the line information received by the CAU, converts the line information into new specific information messages and transmits the new specific information messages to a host of the ATP system, and the host synthesizes various train-ground information to generate a train speed curve, so that the train is effectively protected. The BTM, CAU and transponder form a space transmission microwave antenna system.
In the design and calculation of microwave circuits, it is necessary to perform comprehensive evaluation of all network parameters of the characteristics of the components used. The microwave components, including the microwave transistors, are often characterized by S parameters (scattering parameters). A typical two-port network requires four scattering parameters S11, S22, S12, and S21 to be fully valued. S12 is the reverse transmission coefficient, i.e. isolation. S21 is the forward transmission coefficient, i.e., the gain. S11 is the input reflection coefficient, i.e., the input return loss, and S22 is the output reflection coefficient, i.e., the output return loss.
In practice, measurement methods are often used to determine the parameters of the network. The S parameter is used for evaluating the performance of the unit under test for reflecting signals and transmitting signals. The parameter is defined by the ratio of two complex numbers, and the imaginary part phase of its equivalent complex impedance in a microwave circuit configuration containing information CAU about the amplitude and phase of the signal can also be represented by the complex form of the S-parameter, where the radius of reflection and the angle of reflection are a representation. Normally, the imaginary complex impedance of the CAU may be measured and adjusted by a network analyzer.
When a network analyzer is used for actual measurement of the CAU, the transmitting power of the physical antenna is up to 20-50W, and the power is harmful to human bodies to a certain extent, so that the health of experimenters is harmed.
Disclosure of Invention
In view of this, the present application provides a phase simulation device, which is used to simulate a real object CAU when the CAU is actually measured and adjusted by using a network analyzer, so as to avoid the health of experimenters from being harmed by the CAU.
In order to achieve the above object, the following solutions are proposed:
a phase simulation device comprising a two-port network and a load network, wherein:
the two-port network comprises a network input end and a network output end, wherein the network input end is used for being connected with a signal output end of a network analyzer, and the input impedance of the two-port network is equal to the output impedance of the two-port network and is the same as the output impedance of the signal output end;
the load network is connected with the network output end, and the impedance of the load network is the same as that of the signal output end.
Optionally, the two-port network includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor, but not limited to only nine resistors, where:
one end of the first resistor is used as the anode of the input end of the network input end and is respectively connected with one end of the second resistor, one end of the third resistor, one end of the fourth resistor and one end of the fifth resistor;
the other end of the first resistor is used as the negative electrode of the input end of the network input end and is respectively connected with the other end of the second resistor and the other end of the third resistor;
the other end of the fourth resistor is connected with the other end of the fifth resistor and one end of the sixth resistor respectively;
the other end of the sixth resistor is used as the anode of the output end of the network output end and is respectively connected with one end of the seventh resistor, one end of the eighth resistor and one end of the ninth resistor;
the other end of the ninth resistor is used as the cathode of the output end of the network output end and is connected with the other end of the seventh resistor and the other end of the eighth resistor.
Optionally, the load network is a pi-type network, the pi-type network includes a first end and a second end, the first end is used for connecting an output end anode of the network output end, and the second end is used for connecting an output end cathode of the network output end.
Optionally, the pi-type network includes a first capacitor array, a second capacitor array, and an inductance branch, where:
one end of the first capacitor array is used as the first end and is connected with one end of the second capacitor array, and the other end of the second capacitor array is used as the second end;
the first capacitive array comprises a plurality of capacitive elements connected together in parallel, and the second capacitive array comprises a plurality of capacitive elements connected together in parallel;
one end of the inductance branch circuit is connected with the first end, and the other end of the inductance branch circuit is connected with the second end.
Optionally, the pi-type network includes a first inductor, a second inductor, and a first capacitor, where:
one end of the first inductor is used as the first end, the other end of the first inductor is used as the second end, and the first inductor is connected with one end of the first capacitor;
the other end of the first capacitor is connected with one end of the second inductor;
the other end of the second inductor is connected with the second end.
Optionally, the pi-type network includes a third inductor, a second capacitor, and a third capacitor, where:
one end of the second capacitor is used as the first end, and the other end of the second capacitor is connected with one end of the third inductor;
the other end of the third inductor is used as the second end and is connected with one end of the third capacitor;
the other end of the third capacitor is connected with the first end.
Optionally, the pi-type network includes a fourth inductor, a fifth inductor, and a fourth capacitor, where:
one end of the fourth inductor is used as the first end and is connected with one end of the fifth inductor;
the other end of the fifth inductor is connected with one end of the fourth capacitor;
and one end of the fourth capacitor is used as the second end and is connected with the other end of the fourth inductor.
Optionally, the pi-type network includes a sixth inductor, a fifth capacitor, and a sixth capacitor, where:
one end of the sixth inductor is used as the first end and is connected with one end of the fifth capacitor;
the other end of the fifth capacitor is connected with one end of the sixth capacitor;
and the other end of the sixth capacitor is used as the second end and is connected with the other end of the sixth inductor.
Optionally, the pi-type network includes a seventh inductor, an eighth inductor, and a seventh capacitor, where:
one end of the seventh inductor is used as the first end and is connected with one end of the seventh capacitor;
the other end of the seventh capacitor is used as the second end and is connected with one end of the eighth inductor;
the other end of the eighth inductor is connected with the other end of the seventh inductor.
It can be seen from the foregoing technical solutions that the present application discloses a phase simulation device, which includes a two-port network and a load network. The two-port network comprises a network input end and a network output end, wherein the network input end is used for being connected with the signal output end of the network analyzer, and the input impedance of the two-port network is equal to the output impedance of the two-port network and is the same as the output impedance of the signal output end; the load network is connected with the network output end, and the impedance of the load network is the same as that of the signal output end. Through the configuration to the two-port network, can make it satisfy the requirement of different impedance and decrement to can utilize this phase simulation device to simulate real object CAU when measuring and adjusting CAU, because this phase simulation device can not send high-power radiation, consequently when satisfying the requirement of measuring and adjusting, can not cause harm to experimenter's health.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of a phase simulation apparatus according to an embodiment of the present application;
fig. 2a is a circuit diagram of a phase simulation apparatus according to an embodiment of the present application;
FIG. 2b is a network principle and decomposition transformation diagram of a pi-type network according to an embodiment of the present application;
FIG. 3 is a Smith chart of a parametric scan analysis of an embodiment of the present application;
FIG. 4 is a polar plot of a parameter scan analysis according to an embodiment of the present application;
FIG. 5 is a circuit diagram of a pi-type network according to an embodiment of the present application;
FIG. 6 is a circuit diagram of another pi-type network according to an embodiment of the present application;
FIG. 7 is a circuit diagram of yet another pi-type network according to an embodiment of the present application;
FIG. 8 is a circuit diagram of yet another pi-type network according to an embodiment of the present application;
fig. 9 is a circuit diagram of another pi-type network according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
Fig. 1 is a circuit diagram of a phase simulation apparatus according to an embodiment of the present application.
As shown in fig. 1, the phase simulation device provided in this embodiment is used for simulating a real object CAU when the CAU needs to be measured and modulated by a network analyzer, and includes a two-port network 10 and a load network 20.
The two-port network includes a network input 11 connected to a coaxial connector 100 connecting the signal output of the network analyzer and a network output 12 connected to the load network.
The input impedance of the two-port network is equal to the output impedance and is the same as the output impedance of the signal output terminal of the network analyzer, and the output impedance of the two-port network is the same as the impedance of the load network.
The two-port network includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9, as shown in fig. 2 a. Of course, the practical implementation may not be limited to 9 resistors, and a two-port network formed by other numbers and connection manners is also within the protection scope of the present application.
One end of the first resistor is used as the positive electrode of the input end of the network and is respectively connected with one end of the second resistor, one end of the third resistor, one end of the fourth resistor and one end of the fifth resistor;
the other end of the first resistor is used as the cathode of the input end of the network input end and is respectively connected with the other end of the second resistor and the other end of the third resistor; the other end of the fourth resistor is connected with the other end of the fifth resistor and one end of the sixth resistor respectively;
the other end of the sixth resistor is used as the positive electrode of the output end of the network, and is respectively connected with one end of the seventh resistor, one end of the eighth resistor and one end of the ninth resistor; the other end of the ninth resistor is used as the cathode of the output end of the network output end and is connected with the other end of the seventh resistor and the other end of the eighth resistor.
Normally, the imaginary complex impedance of the CAU may be measured and adjusted by a network analyzer. In a transponder transmission system, when a CAU has no external metal interference, no change in standing-wave ratio and a scanning transponder, the reflection radius of the CAU is about r mu, and the reflection angle of the CAU meets alpha degrees; when metal interference exists around the exterior of the CAU, the BTM system cannot normally work, the reflection angle can deflect by increasing beta degrees generally, the reflection angle of the antenna after the reflection angle is increased by (alpha + beta) degrees, and at the moment, the BTM host can be triggered to alarm, so that the whole system cannot normally work.
The front end of the device forms a low-frequency signal attenuator by using a passive two-port network formed by R1-R9, and the difficulty is that the two-port network needs to ensure that both ends have accurate impedance matching and needs to have required attenuation to bear larger power.
If the signal attenuator is to ensure that the equivalent impedance looking into the signal output end of the network analyzer is RSI.e. impedance matched to the signal source. The impedance looking into the load from that end being related to the impedance R of the loadLAnd (6) matching. The pi-type network with a high Q value adopted by the signal attenuator mode is realized. The method can be realized only by a series of resistors through matching. Signal source internal resistance R in device practical applicationSImpedance R with loadLAre identical, Rs ═ RL＝RZ. Under this condition, the resistance network of the signal attenuator is also symmetrical, that is to say Rin＝RoutLet the voltage attenuation of the signal attenuator be M. The following set of equations may be listed:
Figure BDA0002279260180000061
solving the above system of equations yields the following solution:
Figure BDA0002279260180000062
wherein R isin、Rout、R0Satisfies the following conditions:
Figure BDA0002279260180000063
appropriate resistors can be selected according to the obtained formula, so that the requirements of different matching impedances and attenuation amounts are met, the standing wave ratio and the reflection radius of the train-mounted antenna are simulated, and the value can be measured and calibrated by using a network analyzer.
For example, when the impedance requirement of the matched load is 50 ohms and the attenuation is 3dB, the value of M is 0.708, and then R can be calculatedin、Rout、R0Respectively satisfying 292.5 omega, 17.5 omega and 292.5 omega; when the impedance requirement of the matched load is 75 ohms and the attenuation is 10dB, M takes the value of 0.316, then R can be calculatedin、Rout、R0Respectively satisfying 114.3 Ω, 106.8 Ω, and 114.3 Ω. There are two points to be noted here:
1. the attenuation is sensitive to the resistance of the resistor, and if the resistance is deviated, the attenuation is deviated greatly. Therefore, the resistance value of the resistor needs to be selected as accurate as possible, and the circuit has the advantages that a plurality of resistors are connected in series and in parallel: firstly, the influence caused by inaccurate resistance of a single resistor is eliminated; secondly, an ideal resistance value of the resistor can be created and evolved, for example, an accurate resistor which actually needs 33.33 omega can be obtained by connecting three high-precision 100 omega resistors in parallel; and thirdly, the current of the sharing circuit distributes the power consumption so as to reduce the temperature of a single component and improve the service life of the single component.
2. To select a non-inductive resistor, the inductance of a common resistor has an influence on the impedance at high frequencies.
As can be seen from the foregoing technical solutions, the present embodiment provides a phase simulation device, which includes a two-port network and a load network. The two-port network comprises a network input end and a network output end, wherein the network input end is used for being connected with the signal output end of the network analyzer, and the input impedance of the two-port network is equal to the output impedance of the two-port network and is the same as the output impedance of the signal output end; the load network is connected with the network output end, and the impedance of the load network is the same as that of the signal output end. Through the configuration to the two-port network, can make it satisfy the requirement of different impedance and decrement to can utilize this phase simulation device to simulate real object CAU when measuring and adjusting CAU, because this phase simulation device can not send high-power radiation, consequently when satisfying the requirement of measuring and adjusting, can not cause harm to experimenter's health.
In addition, as shown in fig. 2a, the load network is a pi-type network, and includes a first capacitor array a, a second capacitor array B, and an inductance branch C. One end of the first capacitor array for connecting the two-port network is a first end D1, the other end is connected with the second capacitor array, the part of the second capacitor array connected with the two-port network is a second end D2,
each branch related to the capacitor adopts a parallel capacitor array structure, and the circuit branch related to the inductor adopts a series circuit structure. The design has high precision, and the capacitance value and the inductance value of the required components can be quickly and simply combined through the parallel connection of the capacitors and the series connection of the inductors, wherein the capacitance value is related to the change of the phase angle of the antenna, and the minimum value of the capacitance value can reach 0.1pF level, so that the phase value of the required antenna unit can be accurately simulated. Assuming that the total capacitance value of the first capacitor array is CLThe total capacitance value of the second capacitor array is CRAnd the total inductance value of the inductance branch is L, and the three satisfy the following relation:
Figure BDA0002279260180000081
the frequency band of the whole design of the device is 0-100MHz, and when the frequency is more than the frequency band, the microwave conduction condition may not be met, thereby causing other influences. The simplified impedance circuit schematic diagram of the pi-type network at the rear end of the device is shown in the left side of fig. 2b, the impedance diagram is further converted into a network circuit at the right side, the pi-type network circuit is converted into two L-type network circuits, and the two new L-type networks are respectively converted from the information sourceL of terminal1C1And L at the load side2C2And (4) network composition.
If the load resistance R2Warp XP2And XS2Left conversion to an intermediate virtual resistance Rinter2At this time, R must be satisfiedinter2<R2；
If the source resistance R1Warp XP1And XS1Rightward shift to intermediate virtual resistance Rinter1At this time, R must be satisfiedinter1<R1；
When R isinter2＝Rinter1＝RinterThen, the pi-type network completes the signal source R1And a load terminal R2Impedance transformation between, therefore RinterMust be simultaneously selected to be less than R1And R2. Setting X according to the relation of L-type network transformationP2And XS2Quality factor of the composed L-type network is Q2From X toP1And XS1Quality factor of the composed L-type network is Q1. The bandwidth of the whole pi-type network is Q1、Q2Collectively, the maximum Q value may be set according to the bandwidth requirement.
If it is assumed that R is2Greater than R1The large Q value is Q2Firstly, calculating a right network, wherein other term values meet the following equation system relationship:
Figure BDA0002279260180000082
and
Figure BDA0002279260180000091
from the above equation, when the working frequency f and the bandwidth of the designed circuit are determined, the matching resistance R at the two ends of the network1、R2All other design values can be solved. For example, when the impedance of the two-terminal matching is constant, the designed operating frequency of the device is f, and the passband is about 2fΔ0.7Then the larger loaded quality factor Q in the two L network circuitsLAnd the on-load quality factor Q of the whole pi-type network circuit meets the following requirements:
Figure BDA0002279260180000092
and Q is 2QL (8)
If R is2Not more than R1The large Q value is Q1The left network is calculated first, and the needed values can be solved by exchanging the subscripts 1 and 2 in the equation sets.
C obtained by calculation1、C2Specific values of L are respectively corresponding to C in the deviceL、CRAnd L. And in this device CL、CRAnd L respectively adopt the circuit structures of the first capacitor array A, the second capacitor array B and the inductance group.
The simplified principle is improved and redesigned to a specific circuit structure with adjustable high precision as shown in fig. 2a, namely CL and CR in fig. 2a are respectively expanded to 5 parallel capacitor structures, and since the total capacitance value of the parallel circuit is calculated by adding the capacitance values of the branch circuits of the parallel circuit, the parallel structure can be used for accurately adjusting circuit parameters such as reflection angle.
For example, when CL is calculated to have a total capacitance of 33pF, CR is calculated to have a total capacitance of 58pF, and L is calculated to have an inductance of 350nH, the design requirements are satisfied. When the first capacitor array in the upper part of fig. 2a uses 1 capacitor with a capacitance value of 33Pf, or uses 2 capacitors with 22Pf and 11Pf of general packages, or uses 3 capacitors with 11Pf, 11Pf and 11Pf of general packages, or even more capacitors for addition.
And performing fine adjustment in a smaller range according to the circuit adjustment requirement. When the second capacitor array total value in the lower part of fig. 2a requires a capacitance value of 58pF, there is no capacitor device with this particular capacitance value, so that capacitor devices of 33pF, 22pF and 3pF can be used in combination. Of course, it is only necessary to make C in FIG. 2aL、CRThe value of (b) is sufficient to satisfy the requirement, and FIG. 2The specific value of each capacitor array in the capacitor array a can be adjusted as required at will until the precision meets the requirement.
A circuit simulation software is used for carrying out simulation tests on the designed parameter circuit values, a Smith chart of parameter scanning analysis is shown in FIG. 3, a polar coordinate chart is shown in FIG. 4, the reflection radius is 0.484mu, the reflection angle is 136.083 degrees as shown in S11, and complex impedance imaginary part phase circuit parameters of a train antenna after metal interference can be simulated more accurately.
In addition, as shown in fig. 5, the pi-type network may further include only a first inductor L21, a second inductor L22, and a first capacitor C21, wherein:
one end of the first inductor is used as a first end, the other end of the first inductor is used as a second end, and the first inductor is connected with one end of the first capacitor; the other end of the first capacitor is connected with one end of the second inductor; the other end of the second inductor is connected with the second end.
As shown in fig. 6, the pi-type network may further include only a third inductor L23, a second capacitor C22, and a third capacitor C23, wherein:
one end of the second capacitor is used as a first end, and the other end of the second capacitor is connected with one end of the third inductor; the other end of the third inductor is used as a second end and is connected with one end of a third capacitor; the other end of the third capacitor is connected with the first end.
As shown in fig. 7, the pi-type network may further include only a fourth inductor L24, a fifth inductor L25, and a fourth capacitor C24, wherein:
one end of the fourth inductor is used as a first end and is connected with one end of the fifth inductor; the other end of the fifth inductor is connected with one end of the fourth capacitor; one end of the fourth capacitor is used as a second end and is connected with the other end of the fourth inductor.
As shown in fig. 8, the pi-type network may further include only a sixth inductor L26, a fifth capacitor C25, and a sixth capacitor C26, wherein:
one end of the sixth inductor is used as a first end and is connected with one end of the fifth capacitor; the other end of the fifth capacitor is connected with one end of the sixth capacitor; the other end of the sixth capacitor is used as a second end and is connected with the other end of the sixth inductor.
As shown in fig. 9, the pi-type network may further include only a seventh inductor L27, an eighth inductor L28, and a seventh capacitor C27, wherein:
one end of the seventh inductor is used as a first end and is connected with one end of the seventh capacitor; the other end of the seventh capacitor is used as a second end and is connected with one end of the eighth inductor; the other end of the eighth inductor is connected with the other end of the seventh inductor.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The technical solutions provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the descriptions of the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. A phase simulation device comprising a two-port network and a load network, wherein:
the two-port network comprises a network input end and a network output end, wherein the network input end is used for being connected with a signal output end of a network analyzer, and the input impedance of the two-port network is equal to the output impedance of the two-port network and is the same as the output impedance of the signal output end;
the load network is connected with the network output end, and the impedance of the load network is the same as that of the signal output end.
2. The phase simulation device of claim 1, wherein the two-port network comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor, wherein:
one end of the first resistor is used as the anode of the input end of the network input end and is respectively connected with one end of the second resistor, one end of the third resistor, one end of the fourth resistor and one end of the fifth resistor;
the other end of the first resistor is used as the negative electrode of the input end of the network input end and is respectively connected with the other end of the second resistor and the other end of the third resistor;
the other end of the fourth resistor is connected with the other end of the fifth resistor and one end of the sixth resistor respectively;
the other end of the sixth resistor is used as the anode of the output end of the network output end and is respectively connected with one end of the seventh resistor, one end of the eighth resistor and one end of the ninth resistor;
the other end of the ninth resistor is used as the cathode of the output end of the network output end and is connected with the other end of the seventh resistor and the other end of the eighth resistor.
3. Phase simulation device according to claim 1, wherein the load network is a pi-type network comprising a first terminal for connection to an output positive of the network output and a second terminal for connection to an output negative of the network output.
4. The phase simulation device of claim 3, wherein the pi-network comprises a first capacitor array, a second capacitor array, and an inductive branch, wherein:
one end of the first capacitor array is used as the first end and is connected with one end of the second capacitor array, and the other end of the second capacitor array is used as the second end;
the first capacitive array comprises a plurality of capacitive elements connected together in parallel, and the second capacitive array comprises a plurality of capacitive elements connected together in parallel;
one end of the inductance branch circuit is connected with the first end, and the other end of the inductance branch circuit is connected with the second end.
5. The phase simulation device of claim 3, wherein the pi-network comprises a first inductance, a second inductance, and a first capacitance, wherein:
one end of the first inductor is used as the first end, the other end of the first inductor is used as the second end, and the first inductor is connected with one end of the first capacitor;
the other end of the first capacitor is connected with one end of the second inductor;
the other end of the second inductor is connected with the second end.
6. The phase simulation device of claim 3, wherein the pi-network comprises a third inductor, a second capacitor, and a third capacitor, wherein:
one end of the second capacitor is used as the first end, and the other end of the second capacitor is connected with one end of the third inductor;
the other end of the third inductor is used as the second end and is connected with one end of the third capacitor;
the other end of the third capacitor is connected with the first end.
7. The phase simulation device of claim 3, wherein the pi-network comprises a fourth inductance, a fifth inductance, and a fourth capacitance, wherein:
one end of the fourth inductor is used as the first end and is connected with one end of the fifth inductor;
the other end of the fifth inductor is connected with one end of the fourth capacitor;
and one end of the fourth capacitor is used as the second end and is connected with the other end of the fourth inductor.
8. The phase simulation device of claim 3, wherein the pi-network comprises a sixth inductor, a fifth capacitor, and a sixth capacitor, wherein:
one end of the sixth inductor is used as the first end and is connected with one end of the fifth capacitor;
the other end of the fifth capacitor is connected with one end of the sixth capacitor;
and the other end of the sixth capacitor is used as the second end and is connected with the other end of the sixth inductor.
9. The phase simulation device of claim 3, wherein the pi-network comprises a seventh inductor, an eighth inductor, and a seventh capacitor, wherein:
one end of the seventh inductor is used as the first end and is connected with one end of the seventh capacitor;
the other end of the seventh capacitor is used as the second end and is connected with one end of the eighth inductor;
the other end of the eighth inductor is connected with the other end of the seventh inductor.
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