CN101667216A - System for calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory - Google Patents

System for calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory Download PDF

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CN101667216A
CN101667216A CN200910093472A CN200910093472A CN101667216A CN 101667216 A CN101667216 A CN 101667216A CN 200910093472 A CN200910093472 A CN 200910093472A CN 200910093472 A CN200910093472 A CN 200910093472A CN 101667216 A CN101667216 A CN 101667216A
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CN101667216B (en
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陈爱新
刘跃东
汪玉梅
苏东林
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Beihang University
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Abstract

The invention discloses a system for calculating crosstalk strength among cables based on a partial element equivalent circuit (PEEC) theory. The system comprises a computer and a parallel cable crosstalk module stored in the computer, wherein the parallel cable crosstalk module is redacted by applying VC++6.0 in the computer according to the PEEC theory. A parameter input and configuration unit acquires a cable configuration picture of cables and a metal plate according to configuration parameters; an SPICE circuit modeling unit carries out conversion process by adopting the PEEC theory to obtain an SPICE circuit; and an interference strength analysis unit obtains the crosstalk coupling interference strength of near-end equipment and far-end equipment of parallel cables according to an exciting source and a load which are loaded on the SPICE circuit. By adopting the PEEC theory to analyze the crosstalk among the cables, the invention can accurately and effectively calculate the coupling induction and the coupling capacitance between the cables and obtain the crosstalk strength between the cables.

Description

System based on the calculating crosstalk strength among cables of partial element equivalent circuit (PEEC) theory
Technical field
The present invention relates to a kind of crosstalking between many cables of calculating, more particularly say, be meant and a kind ofly crosstalking between the cable that is installed in sheet metal top calculated that the interference strength that this calculatings obtains can provide foundation for wire cable layout and the electromagnetic protection in the product use based on partial element equivalent circuit (PEEC) theory.
Background technology
Cable has in the equipment room short haul connection very widely to be used, and as shown in Figure 1, on a sheet metal 1 a plurality of equipment is installed, and adopts cable to realize communication between these a plurality of equipment.Be A equipment 21 with B equipment 22 between adopt A cable 11 to realize communicating by letter; Adopt B cable 12 to realize communicating by letter between C equipment 23 and the D equipment 24; Adopt C cable 13 to realize communicating by letter between E equipment 25 and the F equipment 26; But because mutual inductance makes crosstalk phenomenon inevitable with the existence of holding mutually between cable.And along with the development of technology, more and more ambassador's crosstalk phenomenon is more remarkable for the density of cable, becomes the principal element of electromagnetism Interference.
Crosstalking is one of the most scabrous problem in the electronic system.Almost without exception capital runs into the deleterious effect of undesired signal unintentionally in electronic design engineering.In order to reduce the influence of crosstalking, at first need effectively and exactly coupling inductance between cable and coupling capacitance to be carried out modeling analysis calculating, and this not a duck soup.
Summary of the invention
In order to calculate the crosstalk interference between the cable that is installed in sheet metal top, the present invention proposes a kind of system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory.This system uses VC++6.0 according to partial element equivalent circuit (PEEC) theory and has write parameter typing and configuration unit, SPICE circuit modeling unit and interference strength analysis unit in PC.The present invention adopts partial element equivalent circuit (PEEC) theory that crosstalking between cable analyzed, and can accurately and effectively calculate coupling inductance and coupling capacitance between cable, and obtains the crosstalk strength between cable.
The present invention is a kind of system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory, and this system includes a computing machine, and is stored in the module of crosstalking between parallel cables in the computing machine;
The module of crosstalking between described parallel cables is made up of parameter typing and configuration unit (101), SPICE circuit modeling unit (102) and interference strength analysis unit (103);
Parameter typing and configuration unit (101) are according to the configuration parameters of parameter input interface record, and the relative coordinate of cable and sheet metal relation obtains cable configuration figure; Described configuration parameters includes single cable parameters C={ L, D, σ, H} and sheet metal parameter W={W L, W W, W T, W σ, L represents the length of single cable; D represents the diameter of single cable; σ represents the conductivity of the selected rapidoprint of single cable; H represents the height of cable apart from sheet metal; W LThe length of expression sheet metal; W WThe width of expression sheet metal; W TThe thickness of expression sheet metal; W σThe conductivity of the selected rapidoprint of expression sheet metal;
SPICE circuit modeling unit (102) adopts partial element equivalent circuit (PEEC) theory to carry out conversion process and obtains the SPICE circuit according to the cable configuration figure of parameter typing and configuration unit (101) output;
Interference strength analysis unit (103) adopts SPICE circuit analysis software that the analysis of time domain or frequency domain is carried out in loading driving source and load on the SPICE circuit of SPICE circuit modeling unit (102) output, thereby draws the crosstalk couplings interference strength of the proximal device and the remote equipment of parallel cables.
In the system of described calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory, applying portion element equivalent circuit (PEEC) theory conversion process includes following execution in step:
The first step, discrete cable configuration figure
SPICE circuit modeling unit (102) carries out discrete processes to the cable configuration figure of the parameter typing that receives and configuration unit (101) output, obtains discrete cable configuration figure;
Described discrete processes is the frequency values f by user's input H1/10th of pairing wavelength is foundation in free space, cable configuration figure is carried out the model discretize according to partial element equivalent circuit (PEEC) theory handle;
In second step, obtain discrete cable configuration graph parameter value
According to the first equivalent theory of part discrete cable configuration figure is calculated, obtain mutual inductance of subdivision body and subdivision body mutual capacitance parameter value between subdivision bulk resistor, subdivision body self-inductance, subdivision body self-capacitance and the discrete area of subdivision body;
The first subdivision bulk resistor
Figure A20091009347200061
σ is the conductivity of the first subdivision body V, and l is the length of the first subdivision body V, a VBe the sectional area of the first subdivision body V, and a V=hb, h represent the height of the first subdivision body V, and b represents the width of the first subdivision body V;
The first subdivision body self-inductance
Figure A20091009347200062
μ 0Be the magnetic permeability in the vacuum, μ rBe the relative permeability of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body,
Figure A20091009347200071
Be the space Green function
Figure A20091009347200072
Two repeated integrals on the first subdivision body V,
Figure A20091009347200073
Be the vector position of the first subdivision body V, two repeated integrals spatially, dv, dv ' are the variable of the first subdivision body V, two repeated integrals spatially;
The self-capacitance in first cross section
Figure A20091009347200074
ε 0Be the specific inductive capacity in the vacuum, ε rBe the relative dielectric constant of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V,
Figure A20091009347200075
Be the space Green function
Figure A20091009347200076
Two repeated integrals on first cross section,
Figure A20091009347200077
Be the vector position of the first subdivision body V, two repeated integrals spatially, ds, ds ' are the double integration variable in first cross section on the first subdivision body V;
The mutual inductance of the first subdivision body V and the second subdivision body W
Figure A20091009347200078
μ 0Be the magnetic permeability in the vacuum, μ rBe the relative permeability of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V, a WBe the sectional area of the second subdivision body W,
Figure A20091009347200079
Be the space Green function
Figure A200910093472000710
Integration on the first subdivision body V, the second subdivision body W,
Figure A200910093472000711
Be respectively the first subdivision body V and the second subdivision body W, two vector positions spatially, dv is that first subdivision body V integration variable, dw spatially is second subdivision body W integration variable spatially;
The mutual capacitance in first cross section and second cross section ε 0Be the specific inductive capacity in the vacuum, ε rBe the relative dielectric constant of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V, a WBe the sectional area of the second subdivision body W,
Figure A200910093472000713
Be the space Green function
Figure A200910093472000714
Integration on first cross section and second cross section,
Figure A200910093472000715
Be respectively first cross section and second cross section two vector positions spatially, dv ' is that first cross section integration variable, dw ' spatially is second cross section integration variable spatially.
In the 3rd step, the SPICE circuit is set up
According to the annexation and the relation of the electromagnetic coupled between parameter of cable, to the first subdivision bulk resistor
Figure A200910093472000716
The first subdivision body self-inductance
Figure A200910093472000717
The self-capacitance in first cross section
Figure A20091009347200081
The mutual inductance of the first subdivision body V and the second subdivision body W
Figure A20091009347200082
Mutual capacitance with first cross section and second cross section
Figure A20091009347200083
Effectively connect and obtain the SPICE circuit that SPICE characterizes.
The advantage of the system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory of the present invention is:
(1) cable that will connect two equipment rooms adopts the partial element equivalent circuit (PEEC) theory equivalence to be the SPICE equivalent electrical circuit, thereby can analyze the coupling of cable in time domain or frequency domain.
(2) crosstalk between the computing power of utilizing computing machine and parallel cables the cooperating of module, can make up the cable model in real time, and the calculation of parameter of providing convenience for the deviser.
(3) utilize SPICE circuit modeling unit that the cable configuration parameters that receives is carried out the partial element equivalent circuit (PEEC) theory conversion process, thereby the SPICE circuit that acquisition is made up of resolution element, the outer end of this SPICE circuit can be added the outside connecting circuit of arbitrary form easily.
(4) interference strength analysis unit is carried in driving source and load on the SPICE circuit of SPICE circuit modeling cell formation, help coupling inductance between cable and coupling capacitance are carried out modeling analysis calculating, thereby draw the crosstalk couplings interference intensity at the proximal device place and the remote equipment place of cable.
(5) lack precision height, the computing time of adopting partial element equivalent circuit (PEEC) theory to calculate crosstalk couplings between the cable that is installed in the sheet metal top.
Description of drawings
Fig. 1 is that the cable of a plurality of equipment rooms on sheet metal connects schematic diagram.
Fig. 2 is the structural drawing of module of crosstalking between parallel cables of the present invention.
Fig. 2 A is the interface of parameter typing of the present invention and configuration unit.
Fig. 2 B be in parameter typing of the present invention and the configuration unit when clicking interpolation/renewal cable coordinate input interface.
Fig. 2 C is that the parameter of driving source and load is provided with the interface in the interference strength analysis unit of the present invention.
Fig. 3 A is the equivalent structure figure of the first subdivision body V in the SPICE circuit modeling of the present invention unit.
Fig. 3 B is the equivalent structure figure of the second subdivision body W in the SPICE circuit modeling of the present invention unit.
Fig. 4 is the position schematic diagram of cable and sheet metal in the embodiment of the invention.
Fig. 5 is the near-end cross figure as a result of cable in the embodiment of the invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Shown in Fig. 2, Fig. 2 A, Fig. 2 B, Fig. 2 C, the present invention is a kind of system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory, this system includes a computing machine and is stored in the module of crosstalking between the interior parallel cables of computing machine, and the module of crosstalking between this parallel cables is made up of parameter typing and configuration unit 101, SPICE circuit modeling unit 102 and interference strength analysis unit 103;
Computing machine is a kind ofly can carry out the modernized intelligent electronic device of massive values computation and various information processings automatically, at high speed according to prior program stored.In the present invention, the minimalist configuration of computing machine is: dominant frequency 1.24GB, internal memory 512M, hard disk 10GB; Operation system of computer is Windows 2000/2003/XP.
In the present invention, the module of crosstalking between parallel cables adopts VC++ language compilation (VC++6.0 of version number).
(1) parameter typing and configuration unit 101
Shown in Fig. 2 A, Fig. 2 B, parameter typing and configuration unit 101 at first are recorded into configuration parameters in the storer of computing machine by " parameter input interface "; Relative coordinate according to cable and sheet metal concerns the diagram that obtains in the demonstration of " parameter input interface " upper left corner then, and this diagram is called cable configuration figure.
Configuration parameters includes single cable parameters C={ L, D, σ, H} and sheet metal parameter W={W L, W W, W T, W σ; Wherein, L represents the length of single cable; D represents the diameter of single cable; σ represents the conductivity of the selected rapidoprint of single cable; H represents the height of cable apart from sheet metal; W LThe length of expression sheet metal; W WThe width of expression sheet metal; W TThe thickness of expression sheet metal; W σThe conductivity of the selected rapidoprint of expression sheet metal.
The zero point of sheet metal is defaulted as true origin, i.e. O (0,0,0) point.Click the interface prompt that to eject shown in Fig. 2 B behind " interpolation/renewal " button in " typing of cable parameter " and import the required coordinate starting point of current cable.
In the present invention, parameter typing and configuration unit 101 transform the equivalent model that is output as side circuit with the parallel cables and the sheet metal of reality.The configuration desired parameters is by " parameter input interface " typing, and after the parameter input finished, parameter typing and configuration unit 101 were the input quantity of the equivalent model of exportable side circuit as SPICE circuit modeling unit 102.
(2) SPICE circuit modeling unit 102
In the present invention, SPICE circuit modeling unit 102 adopts the partial element equivalent circuit (PEEC) theory conversion process to obtain to form SPICE circuit (abbreviating the SPICE circuit as) by resolution element according to the cable configuration figure of parameter typing and 101 outputs of configuration unit;
Described partial element equivalent circuit (PEEC) theory conversion process includes following execution in step:
The first step, discrete cable configuration figure
The cable configuration figure that 102 pairs of SPICE circuit modeling unit receive carries out discrete processes, obtains the cable configuration of expressing with each discrete area (abbreviating discrete cable configuration figure as);
In step, the user need import one parameter, and this parameter is the highest frequency value f of required calculating of crosstalking H
In the present invention, the discrete processes of step is with f H1/10th of pairing wavelength is foundation in free space, the cable configuration figure of parameter typing and configuration unit output is carried out the model discretize according to partial element equivalent circuit (PEEC) theory handle.
In second step, obtain discrete cable configuration graph parameter value
Shown in Fig. 3 A, Fig. 3 B, according to the first equivalent theory of part discrete cable configuration figure is calculated, obtain mutual inductance of subdivision body and subdivision body mutual capacitance parameter value between subdivision bulk resistor, subdivision body self-inductance, subdivision body self-capacitance and the discrete area of each discrete area (being also referred to as the subdivision body).
The first subdivision bulk resistor
Figure A20091009347200101
σ is the conductivity of the first subdivision body V, and l is the length of the first subdivision body V, a VBe the sectional area of the first subdivision body V, i.e. first cross section of ABCD formation, and a V=hb, h represent the height of the first subdivision body V, and b represents the width of the first subdivision body V.
The first subdivision body self-inductance μ 0Be the magnetic permeability in the vacuum, μ rBe the relative permeability of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body,
Figure A20091009347200103
Be the space Green function
Figure A20091009347200104
Two repeated integrals on the first subdivision body V, Be the vector position of the first subdivision body V, two repeated integrals spatially, dv, dv ' are the variable of the first subdivision body V, two repeated integrals spatially.
The self-capacitance in first cross section ε 0Be the specific inductive capacity in the vacuum, ε rBe the relative dielectric constant of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V,
Figure A20091009347200111
Be the space Green function
Figure A20091009347200112
Two repeated integrals on first cross section,
Figure A20091009347200113
Be the vector position of the first subdivision body V, two repeated integrals spatially, ds, ds ' are the double integration variable in first cross section on the first subdivision body V.
In the present invention, second cross section that the EFGH on the second subdivision body W forms, the length of the second subdivision body W is designated as j, and the height of the second subdivision body W is designated as i, the wide k that is designated as of the second subdivision body W, the area a in second cross section W=ik, i represent the height of the second subdivision body W, and k represents the width of the second subdivision body W.
The mutual inductance of the first subdivision body V and the second subdivision body W
Figure A20091009347200114
μ 0Be the magnetic permeability in the vacuum, μ rBe the relative permeability of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V, a WBe the sectional area of the second subdivision body W,
Figure A20091009347200115
Be the space Green function
Figure A20091009347200116
Integration on the first subdivision body V, the second subdivision body W,
Figure A20091009347200117
Be respectively the first subdivision body V and the second subdivision body W, two vector positions spatially, dv is that first subdivision body V integration variable, dw spatially is second subdivision body W integration variable spatially.
The mutual capacitance in first cross section and second cross section
Figure A20091009347200118
ε 0Be the specific inductive capacity in the vacuum, ε rBe the relative dielectric constant of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V, a WBe the sectional area of the second subdivision body W,
Figure A20091009347200119
Be the space Green function
Figure A200910093472001110
Integration on first cross section and second cross section,
Figure A200910093472001111
Be respectively first cross section and second cross section two vector positions spatially, dv ' is that first cross section integration variable, dw ' spatially is second cross section integration variable spatially.
In the 3rd step, the SPICE circuit is set up
According to the mutual relationship between each discrete elements it is connected, obtain the SPICE circuit; Annexation and the relation of the electromagnetic coupled between parameter according to cable effectively connect the circuit that obtains the SPICE form to above-mentioned various piece body parameter.
(3) interference strength analysis unit 103
Shown in Fig. 2 C, interference strength analysis unit 103 loads driving source and load on the SPICE circuit that receives, thereby imports the crosstalk couplings interference intensity that the analysis of carrying out time domain or frequency domain in the SPICE circuit analysis software draws the proximal device place and the remote equipment place of parallel cables then.
In the present invention, the driving source of loading has pulse excitation source, sinusoidal excitation source or square wave excitation source; Should include low level, high level, delay time, rising edge time, negative edge time, pulse width and recurrence interval correlation parameter in the pulse excitation source.The sinusoidal excitation source should include amplitude and frequency dependence parameter.The square wave excitation source should include amplitude, frequency and dutycycle correlation parameter.
In the present invention, load is meant the input impedance value of equipment.
The SPICE circuit analysis software that uses in the present invention is ADS2005A.
Embodiment 1:
At copper coin (copper coin size W L=1m, W W=0.5m, W T=0.5mm, W σ=5.8 * 10 7S/m) two copper cables (as shown in Figure 4) that are arranged in parallel on, length L=0.3m, diameter D=1mm, conductivity=5.8 * 10 of A cable (port A is to port B) 7S/m, apart from sheet metal height H=5mm, length L=0.3m, diameter D=1mm, conductivity=5.8 * 10 of B cable (port C is to port D) 7S/m, apart from sheet metal height H=5mm; The coordinate starting point of A cable is X=0.3m, Y=0.3m, and the coordinate starting point of B cable is X=0.3m, Y=0.2m.
Carry out computing method, parallel cables and the copper coin employing structure as shown in Figure 4 thereof of crosstalk couplings according to the module of crosstalking between parallel cables of the present invention.Add pulse signal source at port A place, its low level is that 0V, high level are that 1V, delay time are 0ns, rise time to be 400ns, fall time to be that 400ns, pulse width are that 1200ns, recurrence interval are 4000ns.Other three ports (port B, port C and port D) add 50 passive Ω loads.
Circuit structure shown in Figure 4 is input to the module of crosstalking between parallel cables obtains between cable near-end cross coupling result in time domain as shown in Figure 5.As can be seen from Figure 5 the signal waveform at port B place is identical with input signal almost, and the signal waveform at port C place is produced by crosstalk couplings.
The system of a kind of calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory of the present invention, this system uses VC++6.0 according to partial element equivalent circuit (PEEC) theory and has write parameter typing and configuration unit, SPICE circuit modeling unit and interference strength analysis unit in computing machine.The present invention adopts partial element equivalent circuit (PEEC) theory that crosstalking between cable analyzed, and can accurately and effectively calculate coupling inductance and coupling capacitance between cable, and obtains the crosstalk strength between cable.

Claims (8)

1, a kind of system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory, this system includes a computing machine, it is characterized in that: also include the module of crosstalking between parallel cables, crosstalk module stores in computing machine between this parallel cables;
The module of crosstalking between described parallel cables is made up of parameter typing and configuration unit (101), SPICE circuit modeling unit (102) and interference strength analysis unit (103);
Parameter typing and configuration unit (101) are according to the configuration parameters of parameter input interface record, and the relative coordinate of cable and sheet metal relation obtains cable configuration figure; Described configuration parameters includes single cable parameters C={ L, D, σ, H} and sheet metal parameter W={W L, W W, W T, W σ, L represents the length of single cable; D represents the diameter of single cable; σ represents the conductivity of the selected rapidoprint of single cable; H represents the height of cable apart from sheet metal; W LThe length of expression sheet metal; W WThe width of expression sheet metal; W TThe thickness of expression sheet metal; W σThe conductivity of the selected rapidoprint of expression sheet metal;
SPICE circuit modeling unit (102) adopts partial element equivalent circuit (PEEC) theory to carry out conversion process and obtains the SPICE circuit according to the cable configuration figure of parameter typing and configuration unit (101) output;
Interference strength analysis unit (103) adopts SPICE circuit analysis software that the analysis of time domain or frequency domain is carried out in loading driving source and load on the SPICE circuit of SPICE circuit modeling unit (102) output, thereby draws the crosstalk couplings interference strength of the proximal device and the remote equipment of parallel cables.
2, the system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory according to claim 1 is characterized in that described partial element equivalent circuit (PEEC) theory conversion process includes following execution in step:
The first step, discrete cable configuration figure
SPICE circuit modeling unit (102) carries out discrete processes to the cable configuration figure of the parameter typing that receives and configuration unit (101) output, obtains discrete cable configuration figure;
Described discrete processes is the frequency values f by user's input H1/10th of pairing wavelength is foundation in free space, cable configuration figure is carried out the model discretize according to partial element equivalent circuit (PEEC) theory handle;
In second step, obtain discrete cable configuration graph parameter value
According to the first equivalent theory of part discrete cable configuration figure is calculated, obtain mutual inductance of subdivision body and subdivision body mutual capacitance parameter value between subdivision bulk resistor, subdivision body self-inductance, subdivision body self-capacitance and the discrete area of subdivision body;
The first subdivision bulk resistor
Figure A2009100934720003C1
σ is the conductivity of the first subdivision body V, and l is the length of the first subdivision body V, a VBe the sectional area of the first subdivision body V, and a V=hb, h represent the height of the first subdivision body V, and b represents the width of the first subdivision body V;
The first subdivision body self-inductance
Figure A2009100934720003C2
μ 0Be the magnetic permeability in the vacuum, μ rBe the relative permeability of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body,
Figure A2009100934720003C3
Be the space Green function
Figure A2009100934720003C4
Two repeated integrals on the first subdivision body V, Be the vector position of the first subdivision body V, two repeated integrals spatially, dv, dv ' are the variable of the first subdivision body V, two repeated integrals spatially;
The self-capacitance in first cross section
Figure A2009100934720003C6
ε 0Be the specific inductive capacity in the vacuum, ε rBe the relative dielectric constant of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V,
Figure A2009100934720003C7
Be the space Green function
Figure A2009100934720003C8
Two repeated integrals on first cross section,
Figure A2009100934720003C9
Be the vector position of the first subdivision body V, two repeated integrals spatially, ds, ds ' are the double integration variable in first cross section on the first subdivision body V;
The mutual inductance of the first subdivision body V and the second subdivision body W
Figure A2009100934720003C10
μ 0Be the magnetic permeability in the vacuum, μ rBe the relative permeability of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V, a WBe the sectional area of the second subdivision body W,
Figure A2009100934720003C11
Be the space Green function
Figure A2009100934720003C12
Integration on the first subdivision body V, the second subdivision body W, Be respectively the first subdivision body V and the second subdivision body W, two vector positions spatially, dv is that first subdivision body V integration variable, dw spatially is second subdivision body W integration variable spatially;
The mutual capacitance in first cross section and second cross section ε 0Be the specific inductive capacity in the vacuum, ε rBe the relative dielectric constant of medium (sheet metal or cable), a VBe the sectional area of the first subdivision body V, a WBe the sectional area of the second subdivision body W,
Figure A2009100934720003C15
Be the space Green function
Figure A2009100934720003C16
Integration on first cross section and second cross section,
Figure A2009100934720003C17
Be respectively first cross section and second cross section two vector positions spatially, dv ' is that first cross section integration variable, dw ' spatially is second cross section integration variable spatially.
In the 3rd step, the SPICE circuit is set up
According to the annexation and the relation of the electromagnetic coupled between parameter of cable, to the first subdivision bulk resistor
Figure A2009100934720004C1
The first subdivision body self-inductance
Figure A2009100934720004C2
The self-capacitance in first cross section
Figure A2009100934720004C3
The mutual inductance of the first subdivision body V and the second subdivision body W
Figure A2009100934720004C4
Mutual capacitance with first cross section and second cross section Effectively connect and obtain the SPICE circuit that SPICE characterizes.
3, the system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory according to claim 1 is characterized in that: the module of crosstalking between parallel cables adopts the VC++ language compilation, and is stored in the computing machine.
4, the system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory according to claim 1, it is characterized in that: the driving source that is carried on the SPICE circuit has pulse excitation source, sinusoidal excitation source or square wave excitation source.
5, according to the system of claim 1 or 3 described calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory, it is characterized in that: be carried in the pulse excitation source on the SPICE circuit and should include low level, high level, delay time, rising edge time, negative edge time, pulse width and recurrence interval correlation parameter.
6, according to the system of claim 1 or 3 described calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory, it is characterized in that: the sinusoidal excitation source that is carried on the SPICE circuit should include amplitude and frequency dependence parameter; The square wave excitation source should include amplitude, frequency and dutycycle correlation parameter.
7, the system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory according to claim 1 is characterized in that: be carried in the input impedance value that load on the SPICE circuit is meant equipment.
8, the system of the calculating crosstalk strength among cables based on partial element equivalent circuit (PEEC) theory according to claim 1 is characterized in that: the SPICE circuit analysis software that adopts in the interference strength analysis unit (103) is ADS2005A.
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CN103745054A (en) * 2013-12-31 2014-04-23 北京航空航天大学 Modeling and signal crosstalk analysis method for cables and cable bundles in electromagnetic compatibility
CN105677974A (en) * 2016-01-07 2016-06-15 沈阳航空航天大学 Method for analyzing crosstalk of transmission lines in any layout
CN109710995A (en) * 2018-12-07 2019-05-03 江苏益邦电力科技有限公司 A kind of crosstalk noise prediction technique for random arrangement cable
CN110554247A (en) * 2019-08-28 2019-12-10 广州广电计量检测股份有限公司 crosstalk simulation modeling method and simulation model of non-parallel cable
CN113075495A (en) * 2021-02-24 2021-07-06 南方电网科学研究院有限责任公司 Circuit parameter adjusting method, device, equipment and medium of PEEC model
CN114722552A (en) * 2022-06-09 2022-07-08 深圳荣耀智能机器有限公司 Cable length verification method and electronic equipment
WO2023134744A1 (en) * 2022-01-15 2023-07-20 宁波德图科技有限公司 Integrated circuit and packaging structure parasitic parameter extraction method

Cited By (8)

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CN103745054A (en) * 2013-12-31 2014-04-23 北京航空航天大学 Modeling and signal crosstalk analysis method for cables and cable bundles in electromagnetic compatibility
CN103745054B (en) * 2013-12-31 2016-10-26 北京航空航天大学 A kind of modeling to cable and bunch of cables in electromagnetic compatibility and signal cross-talk analyze method
CN105677974A (en) * 2016-01-07 2016-06-15 沈阳航空航天大学 Method for analyzing crosstalk of transmission lines in any layout
CN109710995A (en) * 2018-12-07 2019-05-03 江苏益邦电力科技有限公司 A kind of crosstalk noise prediction technique for random arrangement cable
CN110554247A (en) * 2019-08-28 2019-12-10 广州广电计量检测股份有限公司 crosstalk simulation modeling method and simulation model of non-parallel cable
CN113075495A (en) * 2021-02-24 2021-07-06 南方电网科学研究院有限责任公司 Circuit parameter adjusting method, device, equipment and medium of PEEC model
WO2023134744A1 (en) * 2022-01-15 2023-07-20 宁波德图科技有限公司 Integrated circuit and packaging structure parasitic parameter extraction method
CN114722552A (en) * 2022-06-09 2022-07-08 深圳荣耀智能机器有限公司 Cable length verification method and electronic equipment

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