CN205564945U - Self compensating directional coupler - Google Patents
Self compensating directional coupler Download PDFInfo
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- CN205564945U CN205564945U CN201620332818.8U CN201620332818U CN205564945U CN 205564945 U CN205564945 U CN 205564945U CN 201620332818 U CN201620332818 U CN 201620332818U CN 205564945 U CN205564945 U CN 205564945U
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Abstract
The utility model discloses a self compensating directional coupler, including multilayer substrate, main line and by -pass way, main line and by -pass way are arranged in the layer that multilayer substrate is different, radiofrequency signal in the main line is coupled to in the by -pass way, the by -pass way is Z shape structure. The utility model provides a new " Z shape " coupler structure be vice circuit design " Z shape ", the multilayer substrate that leads to the fact by the manufacturing process deviation when this structure ability automatic compensation produces because of the coupler layer with not the aliging of layer within a definite time main line and by -pass way, the performance index such as the degree of coupling and directionality of coupler are within the scope of expecting in the time of effectively stablizing batch production. The utility model discloses simple structure is convenient for realize, can effective and radio frequency circuit integration.
Description
Technical field
This utility model relates to the bonder of a kind of multilager base plate, specifically for the bonder of the multilager base plate of radio-frequency power amplifier.
Background technology
Traditionally, the realization of these bonders maintains completely overlapped alignment to provide RF-coupled by the radio frequency line on the pcb board adjacent by two and coupling line.These one restrictions of bonder based on multilager base plate are that its directivity and the degree of coupling are changed significantly along with the change of production process, such as, not lining up between layers of radio frequency line and coupling line, and the etching tolerance of transmission line.The radio frequency power output which results in the system employing these bonders controls bad.
There is now several technology change to the performance tackling this bonder and improve the directivity of this multilager base plate bonder.Such as, the length supplementing line of rabbet joint extension bonder compensates even mould and Qi Mo phase velocity and improves the degree of coupling etc..Discuss in " microstrip line-groove bonder-design part I: the S-parameter of non-compensation and compensatory bonder ", Reinmut K. Hoffman et al., IEEE microwave theory and Technology, MIT-30 volume, No. 8, August nineteen eighty-two.The method of various raising directional coupler performances includes the additional assemblies increasing bonder, as the end at radio frequency line and coupling line increases inducer or shnt capacitor.Another method relates to a floating metallic plate to be placed on coupling etc. between splicing thread in Coupled Miccrostrip Lines." bonder and wave filter that the Closure equation of conventional microstrip bonder is applied to design kickboard overlay structure " is also had to mention, " Kuo-Sheng Chin et al., IEEE microwave theory and Technology, volume 56, No. 5, in May, 2008.The technology of another directivity improving microstrip directional coupler is included in the conllinear end of parallel lines bonder and uses feedback element, and the coupled end using feedforward compensation circuit to be connected to directional coupler is also suggested with the bonder increasing directivity/isolation.Directed microstrip line bonder based on multilager base plate is widely implemented in various radio-frequency power amplifier modules, and first its reason gives the credit to its easily fabricated and low cost.This directional coupler is typically designed to place respectively radio frequency line and coupling line in neighbouring two-layer pcb board, and guarantees that both are overlapped to provide RF-coupled.But, this bonder based on multilager base plate has a defect, i.e. its directivity and the degree of coupling occurs along with the change of manufacturing process significantly to change, such as, main line on adjacent layer and the most completely overlapped alignment of auxiliary line, the etching tolerance etc. of the most every transmission lines.
Utility model content
In order to solve prior art exist deficiency, the purpose of this utility model be to provide a kind of simple in construction and can effectively and radio circuit fusion self compensation directional coupler.
For achieving the above object, this utility model be the technical scheme is that
Self compensation directional coupler, including multilager base plate, main line and auxiliary line, described main line and auxiliary line are positioned at layers different in multilager base plate, and the radiofrequency signal in described main line is coupled in auxiliary line, and described auxiliary line is zigzag configuration.
Further, described multilager base plate is 4 Rotating fields, and main line is arranged in ground floor, and auxiliary line is arranged in the second layer.
Further, described multilager base plate is 6 Rotating fields, and main line is arranged in the second layer, and auxiliary line is arranged in third layer.
This Utility model Beneficial effect:The utility model proposes a kind of new " Z-shaped " coupler structure, auxiliary line is designed as " Z-shaped ", this structure can compensate not lining up of the layer of multilager base plate because being caused by manufacturing process deviation when bonder produces and the main line of interlayer and auxiliary line automatically, and when can effectively stably produce, the performance indications such as the degree of coupling of bonder and directivity are within the scope of desired.This utility model simple in construction, it is simple to realize, can effectively merge with radio circuit。
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is circuit structure diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, self compensation directional coupler, including multilager base plate 1, main line 2 and auxiliary line 3, described main line 2 and auxiliary line 3 are positioned at layers different in multilager base plate 1, radiofrequency signal in described main line 2 is coupled in auxiliary line 3, and described auxiliary line 3 is zigzag configuration.
When described multilager base plate 1 is 4 Rotating fields, main line 2 is arranged in ground floor, and auxiliary line 3 is arranged in the second layer.When described multilager base plate 1 is 6 Rotating fields, main line 2 is arranged in the second layer, and auxiliary line 3 is arranged in third layer.
The above is preferred implementation of the present utility model; certainly the interest field of this utility model can not be limited with this; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or equivalent, without departure from the protection domain of technical solutions of the utility model.
Claims (3)
1. a self compensation directional coupler, it is characterized in that: include multilager base plate, main line and auxiliary line, described main line and auxiliary line are positioned at layers different in multilager base plate, and the radiofrequency signal in described main line is coupled in auxiliary line, and described auxiliary line is zigzag configuration.
Self compensation directional coupler the most according to claim 1, it is characterised in that: described multilager base plate is 4 Rotating fields, and main line is arranged in ground floor, and auxiliary line is arranged in the second layer.
Self compensation directional coupler the most according to claim 1, it is characterised in that: described multilager base plate is 6 Rotating fields, and main line is arranged in the second layer, and auxiliary line is arranged in third layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332818.8U CN205564945U (en) | 2016-04-20 | 2016-04-20 | Self compensating directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332818.8U CN205564945U (en) | 2016-04-20 | 2016-04-20 | Self compensating directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205564945U true CN205564945U (en) | 2016-09-07 |
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ID=56809487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620332818.8U Expired - Fee Related CN205564945U (en) | 2016-04-20 | 2016-04-20 | Self compensating directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205564945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789811A (en) * | 2016-04-20 | 2016-07-20 | 广东工业大学 | Self-compensation directional coupler |
-
2016
- 2016-04-20 CN CN201620332818.8U patent/CN205564945U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789811A (en) * | 2016-04-20 | 2016-07-20 | 广东工业大学 | Self-compensation directional coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20170420 |