CN103731990A - Impedance matching method and device of transmission line with via hole - Google Patents
Impedance matching method and device of transmission line with via hole Download PDFInfo
- Publication number
- CN103731990A CN103731990A CN201310714595.2A CN201310714595A CN103731990A CN 103731990 A CN103731990 A CN 103731990A CN 201310714595 A CN201310714595 A CN 201310714595A CN 103731990 A CN103731990 A CN 103731990A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- via hole
- characteristic impedance
- impedance
- impedance matching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Microwave Amplifiers (AREA)
- Dc Digital Transmission (AREA)
Abstract
The invention provides an impedance matching method and device of a transmission line with a via hole. The impedance matching method comprises the steps that whether first characteristic impedance of the transmission line meets the requirements of impedance matching is judged, and a judgment result is obtained; if the judgment result is that the first characteristic impedance of the transmission line does not meet the requirements of impedance matching, the width of a first transmission line in the transmission line is regulated; the first transmission line treats the via hole as the starting point and extends in the direction, far away from the via hole, of the transmission line, and the length of the first transmission line is preset; second characteristic impedance of the transmission line with the width regulated is obtained; the second characteristic impedance serves as the new first characteristic impedance and is judged until the judgment result is that the first characteristic impedance of the transmission line meets the requirements of impedance matching. According to the technical scheme, the manufacturing cost of a PCB is lowered; on the other hand, when the diameter of some via holes in the PCB can not be changed, the impedance of the transmission line can meet the requirements of impedance matching by means of the technical scheme.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and apparatus of impedance matching of the transmission line with via hole.
Background technology
Impedance matching is mainly used on transmission line, its objective is that the microwave signal in order to make all high frequencies all can transfer to load end from source point, returns, thereby promote source benefit and do not have signal reflex.Specifically refer to when signal transmits, require load impedance to equate with the characteristic impedance of transmission line, signal transmission now can not produce reflection, and this shows that all energy have all been absorbed by load; Otherwise, in transmission, have energy loss.When printed circuit board (Printed Circuit Board, hereinafter to be referred as PCB) connects up, for the reflection of anti-stop signal, require the line impedance of transmission line to reach a matching value, thereby meet the requirement of impedance matching.
In prior art, when having via hole measuring point on transmission line, the size that some PCB layout engineer or pcb board manufacturer can revise via diameter or via pad (pad) is adjusted the characteristic impedance of transmission line, makes it reach the requirement of impedance matching.
But current technique can not make unlimited the reducing of via diameter, reducing via diameter can increase the cost of manufacture of PCB; And have some local via holes not revise, the via hole of for example memory bank, therefore can make the impedance of transmission line not reach the requirement of impedance matching.
Summary of the invention
The invention provides a kind of method and apparatus of impedance matching of the transmission line with via hole, in order to solve in prior art, reduce the problem that the cost of manufacture of the PCB that via diameter causes increases for the requirement that makes transmission line reach impedance matching; And, solved the problem of the impedance mismatch of the transmission line causing when some via diameter can not be revised on PCB.
First aspect present invention provides a kind of method of impedance matching of the transmission line with via hole, comprising:
The First Characteristic impedance of described transmission line is carried out to decision operation, obtain judged result; Wherein, described decision operation comprises: judge whether the First Characteristic impedance of described transmission line meets the requirement of impedance matching;
If the First Characteristic impedance that described judged result is described transmission line does not meet the requirement of described impedance matching, adjust the live width of the first transmission line in described transmission line; Wherein, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended;
Obtain the Second Characteristic impedance of adjusting the transmission line after live width;
Described Second Characteristic impedance is carried out to described decision operation as new First Characteristic impedance, until the First Characteristic impedance that described judged result is described transmission line meets the requirement of impedance matching.
In conjunction with first aspect, in the possible execution mode of the first of first aspect, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended, comprising:
Described the first transmission line is take described via hole as starting point, and along a direction of described transmission line, extends the transmission line of preset length.
In conjunction with first aspect, in the possible execution mode of the second of first aspect, described the first transmission line is take described via hole as starting point and along the transmission line away from the preset length of the direction of described via hole on described transmission line, comprising:
Described the first transmission line is take described via hole as starting point, and the transmission line of the preset length of extending along described transmission line to described via hole both sides.
Second aspect present invention provides a kind of device of impedance matching of the transmission line with via hole, comprising:
Judge acquisition module, for the First Characteristic impedance to described transmission line, carry out decision operation, obtain judged result; Wherein, described decision operation comprises: judge whether the First Characteristic impedance of described transmission line meets the requirement of impedance matching; Described judgement acquisition module is also carried out described decision operation for the Second Characteristic impedance that impedance acquisition module is obtained as new First Characteristic impedance, until the First Characteristic impedance that described judged result is described transmission line meets the requirement of impedance matching;
Adjusting module, if the First Characteristic impedance that is described transmission line for the described described judged result that judges that acquisition module obtains does not meet the requirement of described impedance matching, adjusts the live width of the first transmission line in described transmission line; Wherein, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended;
Described impedance acquisition module, for obtaining the Second Characteristic impedance of adjusting the transmission line after live width by described adjusting module.
In conjunction with second aspect, in the possible execution mode of the first of second aspect, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended, comprising:
Described the first transmission line is take described via hole as starting point, and along a direction of described transmission line, extends the transmission line of preset length.
In conjunction with second aspect, in the possible execution mode of the second of second aspect, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended, comprising:
Described the first transmission line is take described via hole as starting point, and the transmission line of the preset length of extending along described transmission line to described via hole both sides.
The invention provides a kind of method and apparatus of impedance matching of the transmission line with via hole, by the First Characteristic impedance to transmission line, carry out the decision operation of the requirement that whether meets impedance matching, obtain judged result; When judged result is that First Characteristic impedance is not while meeting requiring of impedance matching, adjust the live width of the first transmission line in transmission line, this first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended; Afterwards, obtain the Second Characteristic impedance of adjusting the transmission line after live width, and Second Characteristic impedance is carried out to above-mentioned decision operation as new First Characteristic impedance, until the First Characteristic impedance that judged result is transmission line meets the requirement of impedance matching, the solution of the present invention makes transmission line reach the requirement of impedance matching by adjusting the live width of the first transmission line, thereby avoided adjusting the diameter of via hole, therefore reduced the cost of manufacture of PCB; On the other hand, when upper some via diameter of PCB can not be revised, adopt the solution of the present invention to make the impedance of transmission line reach the requirement of impedance matching.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the method one of the impedance matching of the transmission line with via hole provided by the invention;
Fig. 2 is the structural representation of the front transmission line with via hole of adjustment live width provided by the invention;
Fig. 3 is the emulation schematic diagram of the characteristic impedance of the front transmission line with via hole of adjustment live width provided by the invention;
Fig. 4 is the structural representation one with the transmission line of via hole after adjustment live width provided by the invention;
Fig. 5 is the characteristic impedance schematic diagram of the transmission line with via hole after adjustment live width provided by the invention;
Fig. 6 is the structural representation two with the transmission line of via hole after adjustment live width provided by the invention;
Fig. 7 is the structural representation three with the transmission line of via hole after adjustment live width provided by the invention;
Fig. 8 is the structural representation of the device embodiment mono-of the impedance matching of the transmission line with via hole provided by the invention.
Embodiment
For the cabling layout of the transmission line on PCB and respective element, developer realizes by corresponding cabling layout software.In cabling layout process, guarantee that the characteristic impedance of transmission line meets the requirement of impedance matching, and the characteristic impedance of transmission line and the live width of transmission line have inseparable relation, therefore need developer to carry out emulation detection to the characteristic impedance of transmission line, and when the characteristic impedance of transmission line does not meet impedance matching and requires, need live width by transmission line so that it reaches impedance matching.
Fig. 1 is the schematic flow sheet of the embodiment of the method one of the impedance matching of the transmission line with via hole provided by the invention, and the executive agent of the method can be computer.As shown in Figure 1, the method comprises:
S101: the First Characteristic impedance of transmission line is carried out to decision operation, obtain judged result; Wherein, this decision operation comprises: judge whether the First Characteristic impedance of transmission line meets the requirement of impedance matching.
Concrete, developer is directed into the relevant information of upper PCB transmission line and element in computer in advance, by the First Characteristic impedance of COMPUTER DETECTION whole transmission line, optional, can realize by the simulation software in computer.Computer is carried out decision operation to this First Characteristic impedance, judges whether it meets the requirement of impedance matching.
S102: if the First Characteristic impedance that above-mentioned judged result is transmission line does not meet the requirement of impedance matching, adjust the live width of the first transmission line in transmission line; Wherein, this first transmission line is for take via hole as starting point, and along the transmission line of the preset length that on transmission line, the direction away from via hole is extended.
Concrete, referring to Fig. 2 and Fig. 3, Fig. 2 is the structural representation (10 in Fig. 2 is transmission line, and 11 is via hole) of the front transmission line with via hole of adjustment live width provided by the invention, and Fig. 3 is the emulation schematic diagram of the characteristic impedance of the front transmission line with via hole of adjustment live width provided by the invention.As seen from Figure 3, there is a recessed area on the right side in figure, and this is because via hole 11 capacitives cause more greatly, and the judged result that therefore computer draws is the requirement that the First Characteristic impedance of the above-mentioned transmission line 10 with via hole 11 does not meet impedance matching.
In above-mentioned judged result, be not meet after the requirement of impedance matching with the First Characteristic impedance of the transmission line 10 of via hole 11, computer is adjusted the above-mentioned live width with the first transmission line 12 in the transmission line 10 of via hole 11, optionally, computer can be realized the line width adjustment to the first transmission line 12 by simulation software.Referring to Fig. 4, Fig. 4 is the structural representation (10 in Fig. 4 is transmission line, and 11 is via hole, and 12 is the first transmission line) with the transmission line of via hole after adjustment live width provided by the invention.The position of the first transmission line 12 has been shown in Fig. 4, and the first transmission line 12 is take via hole 11 as starting point, and along the transmission line of the preset length that on transmission line, the direction away from via hole 11 is extended.It should be noted that shown in Fig. 4 to be only the optional implementation of one of the first transmission line 12, the first transmission line 12 in the embodiment of the present invention also has other implementation, in the embodiment below, can make referrals to.
S103: obtain the Second Characteristic impedance of adjusting the transmission line after live width.
S104: Second Characteristic impedance is carried out to above-mentioned decision operation as new First Characteristic impedance, until the First Characteristic impedance that above-mentioned judged result is transmission line meets the requirement of impedance matching.
Concrete, when computer, adjust after the live width of the first transmission line, again detect the characteristic impedance of whole transmission line, i.e. Second Characteristic impedance; And using this Second Characteristic impedance as new First Characteristic impedance, continue to carry out decision operation, continue to judge whether it meets the requirement of impedance matching; If so, stop the operation of judgement and line width adjustment, and the actual linewidth of the first transmission line of last emulation is inputed in corresponding cabling layout software; If not, continue the live width of the first transmission line to adjust, again detect the characteristic impedance of whole transmission line, and this characteristic impedance is continued to carry out decision operation as new First Characteristic impedance, until the First Characteristic impedance that above-mentioned judged result is above-mentioned transmission line meets the requirement of impedance matching.
With Fig. 3 contrast, in Fig. 5, after adjusting live width, the characteristic impedance of the transmission line of impedance meets the requirement of impedance matching.
The invention provides a kind of method of impedance matching of the transmission line with via hole, by the First Characteristic impedance to transmission line, carry out the decision operation of the requirement that whether meets impedance matching, obtain judged result; When judged result is that First Characteristic impedance is not while meeting requiring of impedance matching, adjust the live width of the first transmission line in transmission line, this first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended; Afterwards, obtain the Second Characteristic impedance of adjusting the transmission line after live width, and Second Characteristic impedance is carried out to above-mentioned decision operation as new First Characteristic impedance, until the First Characteristic impedance that judged result is transmission line meets the requirement of impedance matching, the solution of the present invention makes transmission line reach the requirement of impedance matching by adjusting the live width of the first transmission line, thereby avoided adjusting the diameter of via hole, therefore reduced the cost of manufacture of PCB; On the other hand, when upper some via diameter of PCB can not be revised, adopt the solution of the present invention to make the impedance of transmission line reach the requirement of impedance matching.
Fig. 6 is the structural representation two with the transmission line of via hole after adjustment live width provided by the invention, and wherein, 10 in Fig. 6 is transmission line, and 11 is via hole, and 12 is the first transmission line.On above-mentioned basis embodiment illustrated in fig. 1, as the optional execution mode of one of the embodiment of the present invention, what the present embodiment related to is the particular location of the first transmission line 12 in whole transmission line 10.Be specially: above-mentioned the first transmission line 12 is take via hole 11 as starting point, and along a direction of transmission line 10, extends the transmission line of preset length.
The invention provides a kind of method of impedance matching of the transmission line with via hole, by the First Characteristic impedance to transmission line, carry out the decision operation of the requirement that whether meets impedance matching, obtain judged result; When judged result is First Characteristic impedance while not meeting requiring of impedance matching, adjust the live width of the first transmission line in transmission line, this first transmission line is for take described via hole as starting point, and along a direction of transmission line, extends the transmission line of preset length; Afterwards, obtain the Second Characteristic impedance of adjusting the transmission line after live width, and Second Characteristic impedance is carried out to above-mentioned decision operation as new First Characteristic impedance, until the First Characteristic impedance that judged result is transmission line meets the requirement of impedance matching, the solution of the present invention makes transmission line reach the requirement of impedance matching by adjusting the live width of the first transmission line, thereby avoided adjusting the diameter of via hole, therefore reduced the cost of manufacture of PCB; On the other hand, when upper some via diameter of PCB can not be revised, adopt the solution of the present invention to make the impedance of transmission line reach the requirement of impedance matching.
Fig. 7 is the structural representation three with the transmission line of via hole after adjustment live width provided by the invention, and wherein, 10 in Fig. 7 is transmission line, and 11 is via hole, and 12 is the first transmission line.On above-mentioned basis embodiment illustrated in fig. 1, as the optional execution mode of another kind of the embodiment of the present invention, what the present embodiment related to is the first transmission line 12 another particular location in whole transmission line 10.Be specially: above-mentioned the first transmission line 12 is take via hole 11 as starting point, and the transmission line of the preset length of extending along above-mentioned transmission line 10 to via hole both sides.
The invention provides a kind of method of impedance matching of the transmission line with via hole, by the First Characteristic impedance to transmission line, carry out the decision operation of the requirement that whether meets impedance matching, obtain judged result; When judged result is First Characteristic impedance while not meeting requiring of impedance matching, adjust the live width of the first transmission line in transmission line, this first transmission line is the transmission line of the preset length of extending take described via hole as starting point and along above-mentioned transmission line to via hole both sides; Afterwards, obtain the Second Characteristic impedance of adjusting the transmission line after live width, and Second Characteristic impedance is carried out to above-mentioned decision operation as new First Characteristic impedance, until the First Characteristic impedance that judged result is transmission line meets the requirement of impedance matching, the solution of the present invention makes transmission line reach the requirement of impedance matching by adjusting the live width of the first transmission line, thereby avoided adjusting the diameter of via hole, therefore reduced the cost of manufacture of PCB; On the other hand, when upper some via diameter of PCB can not be revised, adopt the solution of the present invention to make the impedance of transmission line reach the requirement of impedance matching.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of program command.Aforesaid program can be stored in a computer read/write memory medium.This program, when carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Fig. 8 is the structural representation of the device embodiment mono-of the impedance matching of the transmission line with via hole provided by the invention.As shown in Figure 8, this device comprises: judge acquisition module 20, adjusting module 21 and impedance acquisition module 22.
Above-mentioned judgement acquisition module 20, carries out decision operation for the First Characteristic impedance to above-mentioned transmission line, obtains judged result; Wherein, this decision operation comprises: judge whether the First Characteristic impedance of above-mentioned transmission line meets the requirement of impedance matching; This judgement acquisition module 20 is also carried out above-mentioned decision operation for the Second Characteristic impedance that impedance acquisition module 22 is obtained as new First Characteristic impedance, until the First Characteristic impedance that judged result is above-mentioned transmission line meets the requirement of impedance matching
Adjusting module 21, if the First Characteristic impedance that is transmission line for the above-mentioned judged result that judges that acquisition module 20 obtains does not meet the requirement of impedance matching, adjusts the live width of the first transmission line in above-mentioned transmission line; Wherein, this first transmission line is for take via hole as starting point, and along the transmission line of the preset length that on above-mentioned transmission line, the direction away from this via hole is extended;
Above-mentioned impedance acquisition module 22, for obtaining the Second Characteristic impedance of adjusting the transmission line after live width by above-mentioned adjusting module 21.
The device of the impedance matching of the transmission line with via hole provided by the invention, can carry out said method embodiment, and it realizes principle and technique effect is similar, does not repeat them here.
Further, on above-mentioned basis embodiment illustrated in fig. 8, above-mentioned the first transmission line is take via hole as starting point, and along the transmission line of the preset length of extending away from the direction of this via hole on above-mentioned transmission line, comprise: above-mentioned the first transmission line is take via hole as starting point, and along a direction of above-mentioned transmission line, extend the transmission line of preset length.Particular location can be shown in Figure 6 structure.
The device of the impedance matching of the transmission line with via hole provided by the invention, can carry out said method embodiment, and it realizes principle and technique effect is similar, does not repeat them here.
Further, on above-mentioned basis embodiment illustrated in fig. 8, above-mentioned the first transmission line is take via hole as starting point, and along the transmission line of the preset length of extending away from the direction of this via hole on above-mentioned transmission line, comprise: above-mentioned the first transmission line is take via hole as starting point, and the transmission line of the preset length of extending along above-mentioned transmission line to via hole both sides.Particular location can be shown in Figure 7 structure.
The device of the impedance matching of the transmission line with via hole provided by the invention, can carry out said method embodiment, and it realizes principle and technique effect is similar, does not repeat them here.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. with a method for the impedance matching of the transmission line of via hole, it is characterized in that, comprising:
The First Characteristic impedance of described transmission line is carried out to decision operation, obtain judged result; Wherein, described decision operation comprises: judge whether the First Characteristic impedance of described transmission line meets the requirement of impedance matching;
If the First Characteristic impedance that described judged result is described transmission line does not meet the requirement of described impedance matching, adjust the live width of the first transmission line in described transmission line; Wherein, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended;
Obtain the Second Characteristic impedance of adjusting the transmission line after live width;
Described Second Characteristic impedance is carried out to described decision operation as new First Characteristic impedance, until the First Characteristic impedance that described judged result is described transmission line meets the requirement of impedance matching.
2. method according to claim 1, is characterized in that, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended, comprising:
Described the first transmission line is take described via hole as starting point, and along a direction of described transmission line, extends the transmission line of preset length.
3. method according to claim 1, is characterized in that, described the first transmission line is take described via hole as starting point and along the transmission line away from the preset length of the direction of described via hole on described transmission line, comprising:
Described the first transmission line is take described via hole as starting point, and the transmission line of the preset length of extending along described transmission line to described via hole both sides.
4. with a device for the impedance matching of the transmission line of via hole, it is characterized in that, comprising:
Judge acquisition module, for the First Characteristic impedance to described transmission line, carry out decision operation, obtain judged result; Wherein, described decision operation comprises: judge whether the First Characteristic impedance of described transmission line meets the requirement of impedance matching; Described judgement acquisition module is also carried out described decision operation for the Second Characteristic impedance that impedance acquisition module is obtained as new First Characteristic impedance, until the First Characteristic impedance that described judged result is described transmission line meets the requirement of impedance matching;
Adjusting module, if the First Characteristic impedance that is described transmission line for the described described judged result that judges that acquisition module obtains does not meet the requirement of described impedance matching, adjusts the live width of the first transmission line in described transmission line; Wherein, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended;
Described impedance acquisition module, for obtaining the Second Characteristic impedance of adjusting the transmission line after live width by described adjusting module.
5. device according to claim 4, is characterized in that, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended, comprising:
Described the first transmission line is take described via hole as starting point, and along a direction of described transmission line, extends the transmission line of preset length.
6. device according to claim 4, is characterized in that, described the first transmission line is for take described via hole as starting point, and along the transmission line of the preset length that on described transmission line, the direction away from described via hole is extended, comprising:
Described the first transmission line is take described via hole as starting point, and the transmission line of the preset length of extending along described transmission line to described via hole both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714595.2A CN103731990B (en) | 2013-12-20 | 2013-12-20 | Impedance matching method and device of transmission line with via hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714595.2A CN103731990B (en) | 2013-12-20 | 2013-12-20 | Impedance matching method and device of transmission line with via hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103731990A true CN103731990A (en) | 2014-04-16 |
| CN103731990B CN103731990B (en) | 2017-02-15 |
Family
ID=50455873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310714595.2A Active CN103731990B (en) | 2013-12-20 | 2013-12-20 | Impedance matching method and device of transmission line with via hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103731990B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025668A (en) * | 2015-07-02 | 2015-11-04 | 浪潮电子信息产业股份有限公司 | Method for realizing impedance match of lines by adding through holes |
| CN105760584A (en) * | 2016-02-01 | 2016-07-13 | 浪潮(北京)电子信息产业有限公司 | Internal wiring method and system for chip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604028Y (en) * | 2003-03-21 | 2004-02-18 | 威盛电子股份有限公司 | Transmission circuit |
| CN1477923A (en) * | 2003-08-01 | 2004-02-25 | 威盛电子股份有限公司 | Signal transmission structure |
| US20060250158A1 (en) * | 2003-06-24 | 2006-11-09 | Yoshitaka Yaguchi | Device and method for matching output impedance in signal transmission system |
| CN1988762A (en) * | 2005-12-20 | 2007-06-27 | 英业达股份有限公司 | Control method and its structure for base plate through hole residual section effect |
-
2013
- 2013-12-20 CN CN201310714595.2A patent/CN103731990B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604028Y (en) * | 2003-03-21 | 2004-02-18 | 威盛电子股份有限公司 | Transmission circuit |
| US20060250158A1 (en) * | 2003-06-24 | 2006-11-09 | Yoshitaka Yaguchi | Device and method for matching output impedance in signal transmission system |
| CN1477923A (en) * | 2003-08-01 | 2004-02-25 | 威盛电子股份有限公司 | Signal transmission structure |
| CN1988762A (en) * | 2005-12-20 | 2007-06-27 | 英业达股份有限公司 | Control method and its structure for base plate through hole residual section effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025668A (en) * | 2015-07-02 | 2015-11-04 | 浪潮电子信息产业股份有限公司 | Method for realizing impedance match of lines by adding through holes |
| CN105760584A (en) * | 2016-02-01 | 2016-07-13 | 浪潮(北京)电子信息产业有限公司 | Internal wiring method and system for chip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103731990B (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104662807B (en) | Shaping is carried out to near-field emissions signal | |
| US9268886B2 (en) | Setting switch size and transition pattern in a resonant clock distribution system | |
| CN103473202B (en) | USB OTG, electronic equipment and the method realizing OTG function | |
| CN102739472B (en) | A kind of stability test method of high-frequency data transmission for server | |
| CN104956440A (en) | Apparatus, method and system for determining reference voltages for a memory | |
| CN111143106A (en) | Repair method, device, equipment and medium for dual-port SSD | |
| CN103731990A (en) | Impedance matching method and device of transmission line with via hole | |
| CN104461660A (en) | Multi-mode dynamic loading method of heterogeneous system | |
| US20180068048A1 (en) | Signal via positioning in a multi-layer circuit board using a genetic via placement solver | |
| CN116245071A (en) | Wiring method, wiring device, wiring medium and wiring product for storage device | |
| CN203386475U (en) | Solid state disk (SSD) | |
| CN104753603A (en) | On-chip optical network system and optical power control method | |
| CN105446753A (en) | Configuration file processing method and device | |
| US20150317092A1 (en) | Disk array system and cable information setting method | |
| CN103516771B (en) | Method for upgrading child node operational software and information collection system | |
| CN108763771B (en) | PCIe link performance optimization method and system | |
| CN113033222B (en) | Electronic equipment, user identity identification card and identification method of storage card | |
| US20180060478A1 (en) | Signal via positioning in a multi-layer circuit board | |
| CN103974555A (en) | Manufacturing method of printed circuit board and printed circuit board | |
| CN104320292A (en) | Switch configuration management method and device | |
| US9600619B2 (en) | Distribution of power vias in a multi-layer circuit board | |
| US10296478B1 (en) | Expansion card configuration of motherboard | |
| CN103870203A (en) | Portable storage device and method for dynamically adjusting work patterns of portable storage device | |
| CN103927564A (en) | Communication method between reader-writer and electronic tag, reader-writer and electronic tag | |
| CN104516840B (en) | Information processing method and message processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee after: Loongson Zhongke Technology Co.,Ltd. Address before: 100190 No. 10 South Road, Zhongguancun Academy of Sciences, Haidian District, Beijing Patentee before: LOONGSON TECHNOLOGY Corp.,Ltd. |