CN2722562Y - Signal transmitting circuit structure - Google Patents
Signal transmitting circuit structure Download PDFInfo
- Publication number
- CN2722562Y CN2722562Y CN 200420081142 CN200420081142U CN2722562Y CN 2722562 Y CN2722562 Y CN 2722562Y CN 200420081142 CN200420081142 CN 200420081142 CN 200420081142 U CN200420081142 U CN 200420081142U CN 2722562 Y CN2722562 Y CN 2722562Y
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- CN
- China
- Prior art keywords
- joint sheet
- main traverse
- standby
- signal transmssion
- line structure
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a signal transmitting circuit structure, which is suitable to be configured on the surface of a circuit board. A pre-determined connecting lead and two spare engaging pads are configured at the same side of a main conducting wire, an interval is designed between the other end of a connecting wire and the main conducting wire in order to form a breaking between the main conducting wire and the connecting wire. Therefore, the current only flows through the element engaging pad formed by the main conducting wire without through the connecting wire and the two spare engaging pads, so the main conducting wire can keep a stable characteristic impedance. In addition, when another electronic component is needed link the two spare engaging pads, a solder bump can be extra lapping jointed with the interval of the main conducting wire and the connecting wire, so the main conducting wire and the connecting wire can be electrically connected with each other via the solder bump.
Description
Technical field
The utility model relates to a kind of signal transmssion line line structure, particularly relevant for a kind of signal transmssion line line structure that is configured in circuit board surface.
Background technology
In recent years, the continuous progress along with electronic technology drives the flourish of whole electronic industry, and many electronic products are come out one after another.Have many passive devices and circuit board in all kinds of electronic products is equal, and the function of circuit board is to carry each passive device, makes these passive devices to electrically connect each other.In addition, emphasizing hommization, multi-functional while on the market now,, making in the design of electronic product lighter, thin, short, little more because the improvement of manufacturing technology.In addition, can make current electronic product that significant progress like this is arranged, (Printed Circuit Board, the progressive help of manufacturing technology PCB) is not little for printed circuit board (PCB).Wherein, printed circuit board (PCB) typically refers to by the multi-layered patterned circuit substrate that conductor layer constituted, in order to assemble various passive devices thereon, in order to constitute the electronic circuit module of required by electronic product.
The circuit design of early stage printed circuit board (PCB) all is under the operating frequency of tens MHz, even the following operating frequency of hundreds of KHz.Under the operating frequency of this scope, the signal wavelength (λ=1/f, f are frequency) of operating frequency is very long relatively.Yet the operating frequency of front radio-frequency transceiver (Front End RFTransceiver) was far beyond be high (being about about 1～6GHz) in the past down at wireless communication technique now flourish, and its radiofrequency signal wavelength is shorter relatively.Thus, can learn by transmission line (transmission line) theory, impedance on the transfer wire of circuit board is easier of conductor width changes and changes, and makes electric current understand energy-producing consume when flowing through lead, thereby has influence on the transmission of signal.
Please in regular turn with reference to Figure 1A, 1B, wherein Figure 1A illustrates known a kind of signal transmssion line line structure, do not cover the schematic diagram of welding cover layer (solder mask) on it as yet, and Figure 1B illustrates known a kind of signal transmssion line line structure, has covered the schematic diagram of welding cover layer on it.Shown in Figure 1A, the signal transmission line structural arrangements is on dielectric layer 100 (being the surface of circuit board), and the signal transmssion line line structure mainly comprises a main traverse 102, one first element joint sheet 102a, one second element joint sheet, 104, one first standby joint sheet 106, one second standby joint sheet 108 and connects lead 110.Wherein, the part of main traverse 102 forms the first element joint sheet 102a, and the second element joint sheet 104 is positioned at the right side of main traverse.In addition, 108 of the first standby joint sheet 106 and the second standby joint sheets can corresponding be positioned at the left sides of main traverse 102, and the first standby joint sheet 106 and the first element joint sheet 102a have one to be connected lead 110 continuous simultaneously.The ground plane of the second element joint sheet 104 and the second standby joint sheet 108 connecting circuit plates wherein.
Shown in Figure 1B, outside the first element joint sheet 102a and the second element joint sheet 104 are exposed to by 112 more than openings of welding cover layer respectively, in order to electrically connect passive device (for example inductance or electric capacity etc.), the first standby joint sheet 106 and the second standby joint sheet 108 will be ready just in case this moment.Similarly, the first standby joint sheet 106 and the second standby joint sheet 108 are outside also a plurality of openings by welding cover layer 112 are exposed to respectively.In addition, the demand for the coincident circuit design can install the standby joint sheet 106 of passive device to the first and the second standby joint sheet 108 extraly additional.
With regard to the known signal transmission-line structure, when first and second standby joint sheet is ready just in case, main traverse will be via connecting lead during the standby joint sheet of conducting to the first, more because the second standby joint sheet is electrically connected to ground plane (ground plane), this will make and produce a capacity effect between first and second standby joint sheet, this causes the front and back line segment of the vicinity first element joint sheet of main traverse to present different characteristic impedances, makes signal will be affected through main traverse the time.
Summary of the invention
Therefore, the purpose of this utility model is providing a kind of signal transmssion line line structure exactly, be suitable for being configured in the surface of a circuit board, in order to overcome the uneven problem of characteristic impedance of connection lead of reserving on the circuit and main traverse that standby joint sheet causes, make signal comparatively intactly to be transmitted on the main traverse.
Based on above-mentioned purpose, the utility model proposes a kind of signal transmssion line line structure, be suitable for being configured in the surface of a circuit board, this signal transmssion line line structure comprises a main traverse at least, its local line segment forms one first element joint sheet; One second element joint sheet is positioned at a side of this main traverse; One first standby joint sheet is positioned at the opposite side of this main traverse; One second standby joint sheet is positioned at the opposite side of this main traverse; And one connect lead, be positioned at the opposite side of this main traverse, and an end of this connection lead is connected in this first standby joint sheet, and the other end of this connection lead extends to the side of this first element joint sheet, and form a connection joint sheet, and has a gap between this connection joint sheet and this main traverse.
Described according to preferred embodiment of the present utility model, main traverse and connect joint sheet and can overlap by a solder bump, and the second element joint sheet and the second standby joint sheet are connected to a ground plane of this circuit board respectively.
Based on above-mentioned, because the utility model is at the first element joint sheet on the main traverse and connects reservation one gap between the lead, make main traverse open circuit with being connected between the lead to form, make main traverse under the environment of high frequency, still can keep the stable properties impedance.In addition, when needs add on the standby joint sheet of passive device to two, can overlap solder bump crack between above-mentioned, make that connecting lead electrically conducts with main traverse, and then connection lead and standby joint sheet are electrically conducted.
Description of drawings
Figure 1A illustrates the schematic diagram that known a kind of signal transmssion line line structure does not cover welding cover layer on it as yet.
Figure 1B illustrates the schematic diagram that known a kind of signal transmssion line line structure has covered welding cover layer on it.
Fig. 2 A illustrates a kind of signal transmssion line line structure of the utility model preferred embodiment, does not cover the schematic diagram of welding cover layer on it as yet.
Fig. 2 B illustrates a kind of signal transmssion line line structure of the utility model preferred embodiment, has covered the schematic diagram of welding cover layer on it.
Fig. 2 C illustrates a kind of signal transmssion line line structure of the utility model preferred embodiment, and it adds the schematic diagram of a solder bump with conducting main traverse and connection lead on the gap.
Embodiment
Please refer to Fig. 2 A, a kind of signal transmssion line line structure that it illustrates the utility model preferred embodiment does not cover the schematic diagram of welding cover layer as yet on it.This signal transmission line structural arrangements is on the surface of the dielectric layer 200 of a circuit board, and it mainly has a main traverse 202, one first element joint sheet 202a, one second element joint sheet, 204, one first standby joint sheet 206, one second standby joint sheet 208 and a connection lead 210.
The first element joint sheet 202a can be formed by the local line segment of main traverse 202, and the second element joint sheet 204 then is positioned at the right side of main traverse 202, and the first standby joint sheet 206 and all corresponding left side that is positioned at main traverse 202 of the second standby joint sheet 208.In addition, the second element joint sheet 204 and 208 ground planes that are electrically connected to circuit board respectively of the second standby joint sheet are in order to as with reference to electrode.In addition, connect the left side that lead 210 also is positioned at main traverse 202, and an end that connects lead 210 is connected in the first standby joint sheet 206, the other end that connects lead 210 then extends to the side of the first element joint sheet 202a, and form a connection joint sheet 210a, and connect design existence one gap d between the joint sheet 210a and the first element joint sheet 202a.
Please refer to Fig. 2 B, a kind of signal transmssion line line structure that it illustrates the utility model preferred embodiment has covered the schematic diagram of welding cover layer on it.Welding cover layer 212 is disposed on the dielectric layer 200, and cover main traverse 202 and connect lead 210, a plurality of openings of welding cover layer 212 (not indicating) then expose the first element joint sheet 202a, the second element joint sheet, 204, first standby joint sheet 206, the second standby joint sheet 208 respectively and connect joint sheet 210a.Wherein, the first element joint sheet 202a and the second element joint sheet 204 are in order to engage main passive device (not illustrating).In addition, there is gap d in design between lead 210 and the main traverse 202 owing to connect, making wins standby joint sheet 206 and connect lead 210 can't be electrically connected to main traverse 202, in order to reduce the capacity effect that is produced between the first standby joint sheet 206 and the second standby joint sheet 208, make main traverse 202 itself can keep the stable properties impedance, be transmitted in the suffered influence of main traverse 202 so can reduce signal.
Please refer to Fig. 2 C, it illustrates a kind of signal transmssion line line structure of the utility model preferred embodiment, its add a solder bump in the gap with the conducting main traverse and connect the schematic diagram of lead.Demand for the coincident circuit design, in the time of must extraly another passive device being assembled to the first standby joint sheet 206 and the second standby joint sheet 208, can overlap a solder bump 214 in the gap d that connects the joint sheet 210a and the first element joint sheet 202a, make standby joint sheet 206 generals that win in regular turn via connection lead 210 and solder bump 214, and be electrically connected to main traverse 202.
In sum, the utility model is to utilize at main traverse and connect to design between the lead to have a gap, when two standby joint sheets do not connect passive device, above-mentioned gap can allow connect to form between lead and the main traverse opens circuit, in order to reduce the characteristic impedance that capacity effect that two standby joint sheets are produced has influence on main traverse.In addition, the needs that design for coincident circuit, in the time of must assembling the standby joint sheet of another passive device to two extraly, only need in this another passive device of assembling, overlap the gap of a solder bump between main traverse and connection joint sheet simultaneously, make standby joint sheet general in regular turn via connection lead and solder bump, and be electrically connected to main traverse.Therefore, can reduce the capacity effect of two standby joint sheets by signal transmssion line line structure of the present utility model, in order to keep the stable properties impedance, and can be when needs engage a passive device on two standby joint sheets, the utilization simple steps makes two standby joint sheets and main traverse conducting, just this passive device can be connected on the two standby joint sheets.
Claims (5)
1, a kind of signal transmssion line line structure is suitable for being configured in the surface of a circuit board, it is characterized in that this signal transmssion line line structure comprises at least:
One main traverse, its local line segment forms one first element joint sheet;
One second element joint sheet is positioned at a side of this main traverse;
One first standby joint sheet is positioned at the opposite side of this main traverse;
One second standby joint sheet is positioned at the opposite side of this main traverse; And
One connects lead, be positioned at the opposite side of this main traverse, and an end of this connection lead is connected in this first standby joint sheet, and the other end of this connection lead extends to the side of this first element joint sheet, and form a connection joint sheet, and has a gap between this connection joint sheet and this main traverse.
2, signal transmssion line line structure as claimed in claim 1, it is characterized in that: described signal transmssion line line structure also comprises a welding cover layer of a patterning, cover this main traverse and this connection lead, but expose this first element joint sheet, this second element joint sheet, this first standby joint sheet, this second standby joint sheet and this connection joint sheet.
3. signal transmssion line line structure as claimed in claim 1 is characterized in that: described signal transmssion line line structure also comprises a solder bump, and it is overlapped in this main traverse and this connection joint sheet.
4. signal transmssion line line structure as claimed in claim 1 is characterized in that: this second element joint sheet is connected to a ground plane of this circuit board.
5. signal transmssion line line structure as claimed in claim 1 is characterized in that: this second standby joint sheet is connected to a ground plane of this circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081142 CN2722562Y (en) | 2004-07-27 | 2004-07-27 | Signal transmitting circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081142 CN2722562Y (en) | 2004-07-27 | 2004-07-27 | Signal transmitting circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722562Y true CN2722562Y (en) | 2005-08-31 |
Family
ID=35012930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420081142 Expired - Fee Related CN2722562Y (en) | 2004-07-27 | 2004-07-27 | Signal transmitting circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722562Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368711B (en) * | 2007-08-13 | 2010-09-29 | 富士迈半导体精密工业（上海）有限公司 | Circuit board unit, circuit board and illumination device |
| CN101236907B (en) * | 2008-03-07 | 2011-01-05 | 日月光半导体制造股份有限公司 | Line layout for cutting signal line on the circuit board |
-
2004
- 2004-07-27 CN CN 200420081142 patent/CN2722562Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368711B (en) * | 2007-08-13 | 2010-09-29 | 富士迈半导体精密工业（上海）有限公司 | Circuit board unit, circuit board and illumination device |
| CN101236907B (en) * | 2008-03-07 | 2011-01-05 | 日月光半导体制造股份有限公司 | Line layout for cutting signal line on the circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050831 Termination date: 20090727 |