CN208434164U - A kind of low-loss flat transmission line - Google Patents
A kind of low-loss flat transmission line Download PDFInfo
- Publication number
- CN208434164U CN208434164U CN201820799826.2U CN201820799826U CN208434164U CN 208434164 U CN208434164 U CN 208434164U CN 201820799826 U CN201820799826 U CN 201820799826U CN 208434164 U CN208434164 U CN 208434164U
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- Prior art keywords
- ground plane
- signal wire
- metal plate
- transmission line
- groove
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Abstract
The utility model discloses a kind of low-loss flat transmission lines, including upper ground plane, lower ground plane and the signal wire being arranged between the upper ground plane and lower ground plane, it is electrically connected between the upper ground plane and the lower ground plane, tie point is located at the two sides of the signal wire；Strip-shaped hole is provided on the lower ground plane, the range between the two sides of the strip-shaped hole is greater than the width of the signal wire；The lower ground plane is electrically connected on a metal plate, and the metal plate is provided with a groove in the signal wire side；The width of the groove is greater than the width of the signal wire, and the orthographic projection of the signal wire, in the range of the strip-shaped hole of the lower ground plane, the orthographic projection of the signal wire is within the scope of the groove of the metal plate.
Description
Technical field
The utility model relates to a kind of flat transmission line more particularly to a kind of low-loss flat transmission lines.
Background technique
Increasingly focus on industrial design using notebook and tablet computer as the mobile terminal device of representative now, wherein full gold
Belong to shell, height screen accounting etc. becomes the favorite trend of the majority of consumers.In this context, existing generic coaxial transmission line and
The drawbacks of multilayer flat belt-like transmission line needs biggish gap, can not maximally utilize space leaks, and reduces by force
The ground plane of two sides will affect the quality of signal again above and below signal wire.
Utility model content
The utility model provides a kind of low-loss flat transmission line, with solve in the prior art transmission line occupied space compared with
Greatly, reduce the problem of signal wire occupied space influences the quality of signal by force；In order to solve the above technical problems, the utility model body
It unites following technological means: a kind of low-loss flat transmission line, including upper ground plane, lower ground plane and be arranged in the upper ground connection
Signal wire between layer and lower ground plane, is electrically connected, tie point is located at institute between the upper ground plane and the lower ground plane
State the two sides of signal wire；Strip-shaped hole is provided on the lower ground plane, the range between the two sides of the strip-shaped hole is greater than described
The width of signal wire；The lower ground plane is electrically connected on a metal plate, and the metal plate is arranged in the signal wire side
There is a groove.
In certain embodiments, the width of the groove is greater than the width of the signal wire, and the signal wire
Orthographic projection is in the range of the strip-shaped hole of the lower ground plane, the groove range of the orthographic projection of the signal wire in the metal plate
It is interior.
In certain embodiments, the lower ground plane and the metal plate are to be electrically connected.
In certain embodiments, the lower ground plane and the metal plate are electrically connected by a two-sided conducting resinl.
In certain embodiments, it is connected between the upper ground plane and the lower ground plane by metallic vias, it is real
The integraty of the existing ground plane, it is logical that upper ground plane and metal plate electric connection is integral with two-sided conducting resinl one, favorably
In the function of giving full play to ground plane.
In certain embodiments, transmission line is the two-sided FPC or PCB for being provided with conductive layer, and the signal wire is it
In a lateral erosion formed conducting wire, the signal wire two sides be continuous ground plane.
In certain embodiments, the width of the signal wire is less than the upper ground plane and the lower ground plane vias
The width of tie point, the signal wire by one there is certain thickness insulation double-sided adhesive to be fixed on the upper ground plane or institute
It states on metal plate, and face metal plate groove.
In certain embodiments, the metal plate is metalwork in product structure, as metal shell or screen encapsulate
Metal shell.
The utility model provides another technical solution, including upper ground plane, metal plate and setting in the upper ground connection
Signal wire between layer and metal plate, is electrically connected, tie point is located at the letter between the upper ground plane and the metal plate
The two sides of number line；The metal plate is provided with a groove in the signal wire side, and the width of the groove is not less than the letter
The width of number line, the orthographic projection of the signal wire is in the range of the groove.
In certain embodiments, electrically connected between the upper ground plane and the metal plate by two-sided conducting resinl
It connects, the signal wire is fixed on the upper ground plane with certain thickness insulation double-sided adhesive or the metal plate by one
In groove.
By using above-mentioned technical proposal, have the advantages that it compared with prior art
(1) lower ground plane is arranged to disrupted configuration by this programme, is metal plate using the structured metal layer of product, is connect by under
Stratum and metal plate pass through conductive glue connection, make metal plate as lower ground plane, incorporate lower ground plane and equipment metal structure
Space, the structural material feature for making full use of equipment itself to have by oneself provides ground plane for signal wire, effectively saves metal-back
The occupied space of route in body equipment is conducive to the frivolous structure trend for pushing product.
(2) groove is provided in this programme on a metal plate, which is arranged in position corresponding with signal wire,
Due to being provided with groove, widens signal wire at a distance from metal plate, reduce the interference to signal.
(3) upper ground plane is connect by way of metallic vias with lower ground plane in this programme, by being connect under disconnection
Multiple via holes are connected into line by stratum, and lower ground plane and metal plate are electrically connected by conducting resinl, form complete set
Ground plane structure.
(4) signal wire and ground plane are concentrated design on a PCB or FPC by this programme, another using PCB or FPC signal wire
The conductive layer of side is ground plane, and the metalwork in combination product structure is another ground plane, significantly reduces signal
Occupied space in line transmission process.
(5) this programme further includes another structure, only includes ground plane, metal plate and signal wire, upper ground plane
With metal plate by conducting resinl be electrically connected, signal wire by being fixed on upper ground plane with certain thickness insulating cement,
A groove is arranged in position corresponding with signal wire on metal plate；The structure can effectively reduce manufacturing process and cost.
Detailed description of the invention
Fig. 1 is the structural section schematic diagram of existing flat transmission line；
Fig. 2 is low-loss flat transmission line structural section schematic diagram in the utility model embodiment；
Fig. 3 is the insertion loss pair of the utility model embodiment transmission plan and normal transmission scheme under notebook mode
Than figure.
Label declaration:
The upper ground plane of 1-, ground plane under 2-, 3- signal wire, 4- via hole, 5- groove, 6- conductive double sided adhesive tape.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.
Many details are explained in the following description in order to fully understand the utility model.But this is practical new
Type can be implemented with being much different from other way described herein, and those skilled in the art can be practical new without prejudice to this
Similar popularization is done in the case where type intension, therefore the utility model is not limited by following public specific implementation.
Referring to Fig. 1, the structure is flat transmission line in the prior art, including upper ground plane, lower ground plane and letter
Number line, upper ground plane and lower ground plane are electrically connected, and signal wire is arranged between two layers of ground plane, and this structure is wanted to space
Signal transfer functions can effectively be completed by asking in not high structure, but with the frivolous trend development of mobile terminal, the structure is very
Difficulty is used in lesser space, it is difficult to be done terminal thin.
Embodiment 1
To meet the frivolous trend of terminal device, the present embodiment provides a kind of structures, as shown in Fig. 2, a kind of low-loss is flat
Flat transmission line, including upper ground plane 1, lower ground plane 2 and the signal wire 3 being arranged between upper ground plane 1 and lower ground plane 2,
It is connected between upper ground plane 1 and lower ground plane 2 using metallic vias 4, tie point is located at the two sides of signal wire 3；On lower ground plane 2
It is provided with strip-shaped hole, the width between the two sides of strip-shaped hole is greater than the width of signal wire 3；Lower ground plane 2 is electrically connected at a gold medal
Belong on plate, metal plate is provided with a groove 5 in 3 side of signal wire, and the orthographic projection of signal wire 3 is thrown in lower ground plane 2 and metal plate
In the range of groove 5, and the width of the strip-shaped hole on lower ground plane 2 and metal plate upper groove 5 is not less than the width of signal wire 3
Degree.
This programme is described further below in conjunction with manufacture craft,
On the PCB (printed circuit board) or FPC (flexible circuit board) circuit board that upper and lower surface has conductive layer at etching
The conductive layer of one signal line 3, signal wire two sides retains, and as lower ground plane 2, the other side of signal wire 3 is upper ground plane 1,
Upper ground plane 1 is connected to lower ground plane 2 using metallic vias technique, it is conductive whole to form one；By conductive double sided adhesive tape 6 will under
Ground plane 2 is electrically connected with metal plate, and on the corresponding metal plate of signal wire on portray or one groove of punching press, and groove
Width is not less than the width of signal wire, is electrically connected since conductive double sided adhesive tape 6 realizes lower ground plane 2 with metal plate, and then make gold
It is conductive whole by conductor double-sided adhesive 6, lower ground plane 2 and via hole 4 and upper ground plane 1 formation one to belong to plate, and then relative to signal
The reference ground structure of the formation complete set of line 3.
Metal plate in the present embodiment is the metalwork in product structure, such as metal shell or screen package metals shell
Deng, by taking laptop as an example, the metal plate be computer metal shell structure.Lower ground plane 2 is arranged this embodiment scheme
At disrupted configuration, the structured metal layer using product is metal plate, and lower ground plane 2 is connected with metal plate by conductive double sided adhesive tape 6
It connects, makes metal plate as lower ground plane, incorporate the space of lower ground plane 2 and equipment metal structure, make full use of equipment itself
Own structural material feature provides ground plane for signal wire 3, effectively saves the sky of line holding in metal shell equipment
Between, be conducive to the frivolous structure trend for pushing product.
The effect of the groove 5 is to widen the distance between metal plate and signal wire, to reduce metal shell to the damage of signal
Consumption, referring to Fig. 3, the figure is that this programme structure and conventional transmission line loss consume situation comparison diagram under the same terms, wherein case1 is
This programme structured data, case2 are existing structure data, and from the point of view of the two comparison, the loss of signal situation of the utility model is bright
It is aobvious to be better than common solution.
Embodiment 2
The utility model provides another embodiment, and in the embodiment, the width of signal wire is less than upper ground plane and connects under
The width of via hole junction between stratum, the signal wire are fixed in certain thickness insulation double-sided adhesive by one and connect
On stratum, the position of the signal wire is being arranged at left and right directions close to intermediate place up and down；It should be appreciated that signal wire is consolidated
Positioning sets and is not limited to ground plane, can also be by being fixed on the top of metal groove with certain thickness insulation double-sided adhesive.
Other structures are identical as the structure of embodiment 1, and details are not described herein.
Embodiment 3
The utility model also provides a kind of embodiment, including upper ground plane, signal wire, two-sided conducting resinl and metal plate,
The signal wire is arranged between upper ground plane and metal plate, the two sides of signal wire by two-sided conducting resinl by metal plate with it is upper
Ground plane is electrically connected, and signal wire is fixed on upper ground plane by one with certain thickness insulation double-sided adhesive, with signal
One groove is set on the corresponding metal plate of line, and the width of the groove is not less than the width of signal wire, and the positive throwing of the signal wire
Shadow is thrown in the range of the groove.
It should be appreciated that the fixation position of signal wire is not limited to ground plane, it can also be by with certain thickness insulation
Double-sided adhesive is fixed on the top of metal groove.
The structure manufacturing is relatively easy, can effectively save space and cost in the case where of less demanding to ground plane,
Meet the lightening requirement of terminal.
Although the utility model is disclosed as above with preferred embodiment, it is not for limiting claim, Ren Heben
Field technical staff without departing from the spirit and scope of the utility model, can make possible variation and modification, therefore
The protection scope of the utility model should be subject to the range that the utility model claims are defined.
Claims (10)
1. a kind of low-loss flat transmission line, which is characterized in that connect on described including upper ground plane, lower ground plane and setting
Signal wire between stratum and lower ground plane is electrically connected between the upper ground plane and the lower ground plane, and tie point is located at
The two sides of the signal wire；Strip-shaped hole is provided on the lower ground plane, the range between the two sides of the strip-shaped hole is greater than institute
State the width of signal wire；The lower ground plane is electrically connected on a metal plate, and the metal plate is set in the signal wire side
It is equipped with a groove.
2. a kind of low-loss flat transmission line according to claim 1, which is characterized in that the width of the groove is greater than institute
State the width of signal wire, and the orthographic projection of the signal wire is in the range of the strip-shaped hole of the lower ground plane, the signal wire
Orthographic projection within the scope of the groove of the metal plate.
3. a kind of low-loss flat transmission line according to claim 1, which is characterized in that the lower ground plane and the gold
Belonging to plate is to be electrically connected.
4. a kind of low-loss flat transmission line according to claim 3, which is characterized in that the lower ground plane and the gold
Belong to plate to be electrically connected by a two-sided conducting resinl.
5. a kind of low-loss flat transmission line according to claim 2, which is characterized in that the upper ground plane and it is described under
It is connected between ground plane by metallic vias, realizes the integraty of the ground plane.
6. a kind of low-loss flat transmission line according to claim 5, which is characterized in that transmission line is that two-sided be provided with is led
The FPC or PCB of electric layer, the signal wire are the conducting wire that wherein a lateral erosion is formed, and the signal wire two sides are continuous
Ground plane.
7. a kind of low-loss flat transmission line according to claim 5, which is characterized in that the width of the signal wire is less than
The width of the upper ground plane and the lower ground plane vias tie point, the signal wire have certain thickness insulation by one
Double-sided adhesive is fixed on the upper ground plane or on the metal plate, and face metal plate groove.
8. a kind of low-loss flat transmission line according to claim 1, which is characterized in that the metal plate is product structure
In metal shell or screen package metals shell.
9. a kind of low-loss flat transmission line, which is characterized in that including upper ground plane, metal plate and be arranged in the upper ground connection
Signal wire between layer and metal plate, is electrically connected, tie point is located at the letter between the upper ground plane and the metal plate
The two sides of number line；The metal plate is provided with a groove in the signal wire side, and the width of the groove is not less than the letter
The width of number line, the orthographic projection of the signal wire is in the range of the groove.
10. a kind of low-loss flat transmission line according to claim 9, which is characterized in that the upper ground plane with it is described
It is electrically connected between metal plate by two-sided conducting resinl, the signal wire by one there is certain thickness insulation double-sided adhesive to fix
On the upper ground plane or in the groove of the metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820799826.2U CN208434164U (en) | 2018-05-25 | 2018-05-25 | A kind of low-loss flat transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820799826.2U CN208434164U (en) | 2018-05-25 | 2018-05-25 | A kind of low-loss flat transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208434164U true CN208434164U (en) | 2019-01-25 |
Family
ID=65100228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820799826.2U Expired - Fee Related CN208434164U (en) | 2018-05-25 | 2018-05-25 | A kind of low-loss flat transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208434164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601204A (en) * | 2018-05-25 | 2018-09-28 | 上海安费诺永亿通讯电子有限公司 | A kind of low-loss flat transmission line |
| WO2021120194A1 (en) * | 2019-12-20 | 2021-06-24 | 瑞声声学科技(深圳)有限公司 | Transmission line and electronic device |
-
2018
- 2018-05-25 CN CN201820799826.2U patent/CN208434164U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601204A (en) * | 2018-05-25 | 2018-09-28 | 上海安费诺永亿通讯电子有限公司 | A kind of low-loss flat transmission line |
| WO2021120194A1 (en) * | 2019-12-20 | 2021-06-24 | 瑞声声学科技(深圳)有限公司 | Transmission line and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190125 Termination date: 20190525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |