CN208507909U - A kind of PCB microstrip coupler - Google Patents
A kind of PCB microstrip coupler Download PDFInfo
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- CN208507909U CN208507909U CN201821372593.4U CN201821372593U CN208507909U CN 208507909 U CN208507909 U CN 208507909U CN 201821372593 U CN201821372593 U CN 201821372593U CN 208507909 U CN208507909 U CN 208507909U
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Abstract
The utility model discloses a kind of PCB microstrip couplers, including micro-strip cabling, the micro-strip cabling includes direct-through line and coupling line, the direct-through line both ends are respectively incidence end and straight-through end, the coupling line both ends are respectively coupled end and isolation end, the middle part of the direct-through line and the middle part of coupling line are equipped with sawtooth portion, the sawtooth portion of the direct-through line and coupling line is interlaced, the coupled end and isolation end of the coupling line are to same lateral bend and positioned at a side of double pcb boards, the incidence end of the direct-through line and straight-through end are located at opposite two sides of the double-layer PCB board, the incidence end, straight-through end, coupled end and isolation end are respectively connected with high frequency SMA connector.The utility model is preferably applied to the signal in 2-6GHz communication system real use and monitors analysis, is particularly suitable for WIFI communication system, simplifies the design and production process of microstrip coupler, effectively reduce production cost.
Description
Technical field
The utility model relates to high-frequency communication technical fields, more particularly to a kind of PCB microstrip coupler.
Background technique
Power coupler part is needed to realize that signal monitors analytic function, micro-strip coupling in the test of RF communication system practical application
Clutch is exactly one such.Substantially there are following a few classes: coaxial line coupler, waveguide coupling according to coupler design classification of type
Clutch, microstrip coupler.Wireless communication technique is fast-developing, and the carrier frequency of each communication system is also continuously improved, and minimizes
The circuit design of low-power consumption high-frequency electron device makes micro-band technique make the most of the advantage, and power monitors coupling in radio-frequency measurement technology
Technology is related to the superiority and inferiority that signal quality is analyzed and then assesses entire communication system, existing microstrip coupler isolation, echo damage
The indexs such as consumption are difficult to meet high performance demands.
Utility model content
The purpose of the utility model is to overcome shortcomings in the prior art, provide a kind of PCB microstrip coupler, with
Solve the problems, such as above-mentioned background technique.
The utility model is solved by following technical proposals:
A kind of PCB microstrip coupler, it is described including the double-layer PCB board being overrided to form by first layer, second layer pcb board
First layer pcb board is equipped with micro-strip cabling, and the micro-strip cabling includes direct-through line and coupling line, and the direct-through line both ends are respectively
Incidence end and straight-through end, the coupling line both ends are respectively coupled end and isolation end, the middle part of the direct-through line and coupling line
Middle part is equipped with sawtooth portion, and the sawtooth portion of the direct-through line and coupling line is interlaced, the coupled end and isolation end of the coupling line
Institute is located to same lateral bend and positioned at a side of double pcb boards, the incidence end of the direct-through line and straight-through end
Opposite two sides of double-layer PCB board are stated, the incidence end, straight-through end, coupled end and isolation end are respectively connected with high frequency SMA connection
Head.
Further, the double-layer PCB board is equipped with micro-strip pad, and the high frequency SMA connector is welded in the micro-strip
On pad.
Further, the micro-strip cabling is the copper sheet being layed on the first layer pcb board.
Further, the first layer, via hole is offered on second layer pcb board, the first layer, second layer pcb board are logical
The via hole is crossed to be electrically connected.
Further, the second layer pcb board is equipped with the area Di Tong.
Further, the direct-through line is linear, and the coupling line is U-shaped.
Further, anti-solder flux is laid on the micro-strip cabling.
Further, the width of the double-layer PCB board is 23.1mm, length 29.2mm.
The utility model have the following advantages that compared with prior art and the utility model has the advantages that
The utility model is designed by substrate application parallel coupling and sawtooth filtering principle of PCB FR-4, can more preferably be expanded
Bandwidth adapts to wide frequency communication, can meet return loss < -10dB in 2-6GHz frequency range, insertion loss < -1dB, and isolation < -
17dB preferably monitors analysis applied to the signal in the use of 2-6GHz communication system real, is particularly suitable for WIFI communication system
System, simplifies the design and production process of microstrip coupler, effectively reduces production cost.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is a kind of micro-strip Wiring structure schematic diagram of PCB microstrip coupler.
Fig. 2 is that a kind of return loss of PCB microstrip coupler emulates schematic diagram.
Fig. 3 is that a kind of isolation of PCB microstrip coupler emulates schematic diagram.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
The specific implementation process of the utility model is as follows:
As shown in Figure 1, a kind of PCB microstrip coupler, including the bilayer being overrided to form by first layer, second layer pcb board
Pcb board 1, the first layer pcb board are equipped with micro-strip cabling, and the micro-strip cabling includes direct-through line 2 and coupling line 5, described straight
Logical 2 both ends of line are respectively incidence end 7 and straight-through end 8, and 5 both ends of coupling line are respectively coupled end 10 and isolation end 9, it is described directly
The middle part of logical line 2 and the middle part of coupling line 5 are equipped with sawtooth portion, and the sawtooth portion of the direct-through line 2 and coupling line 5 is interlaced, institute
The coupled end 5 and isolation end 9 for stating coupling line 5 are described straight-through to same lateral bend and positioned at a side of double pcb boards 1
The incidence end 7 of line 2 and straight-through end 8 are located at opposite two sides of the double-layer PCB board 1, the incidence end 7, straight-through end
8, coupled end 5 and isolation end 9 are respectively connected with high frequency SMA connector.The double-layer PCB board 1 is equipped with micro-strip pad, the high frequency
SMA connector is welded on the micro-strip pad.Micro-strip cabling includes a straight-through end, a coupled end, an isolation end, root
Sawtooth cross structure spread bandwidth is selected according to the frequency bandwidth of 2-6GHz, broached-tooth design is interlaced with each other to be able to achieve broadband coupled filtering
Effect.It selects high frequency sub-miniature A connector to be welded in each port and realizes signal coupling distribution.
The micro-strip cabling is the copper sheet being layed on the first layer pcb board.
Via hole is offered on the first layer, second layer pcb board, the first layer, second layer pcb board pass through the via hole
It is electrically connected.
The second layer pcb board is equipped with the area Di Tong.
The direct-through line 2 is linear, and the coupling line 5 is U-shaped, is conducive to each port of rational deployment and micro-strip cabling point
Cloth has adapted to small form factor requirements.
Anti- solder flux is laid on the micro-strip cabling.
The width of the double-layer PCB board 1 is 23.1mm, length 29.2mm.
The microstrip coupler of this implementation is designed by substrate application parallel coupling and sawtooth filtering principle of PCB FR-4, real
It is coupled out signal analysis while now communication, can more preferably expand bandwidth and adapt to wide frequency communication, production precision is high.Volume production error is more
It is small.As shown in Figure 2 to Figure 3, modeling and simulating is carried out using simulation software HFSS15, this microstrip coupler meets in 2-6GHz frequency range
return loss<-10dB；insertion loss<-1dB；isolation<-17dB；Coupling-14~-18dB is compared
Existing coupler performance effectively improves.Analysis preferably is monitored applied to the signal in the use of 2-6GHz communication system real, especially
It is suitable for WIFI communication system.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (8)
1. a kind of PCB microstrip coupler, it is characterised in that: including the bilayer being overrided to form by first layer, second layer pcb board
Pcb board, the first layer pcb board are equipped with micro-strip cabling, and the micro-strip cabling includes direct-through line and coupling line, the direct-through line
Both ends are respectively incidence end and straight-through end, and the coupling line both ends are respectively coupled end and isolation end, the middle part of the direct-through line
Sawtooth portion is equipped with the middle part of coupling line, and the sawtooth portion of the direct-through line and coupling line is interlaced, the coupling of the coupling line
End and isolation end are to same lateral bend and positioned at a side of double pcb boards, the incidence end of the direct-through line and straight-through end
Opposite two sides of the double-layer PCB board are located at, the incidence end, straight-through end, coupled end and isolation end are respectively connected with
High frequency SMA connector.
2. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: the double-layer PCB board is equipped with micro-
Band pad, the high frequency SMA connector are welded on the micro-strip pad.
3. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: the micro-strip cabling is to be layed in
Copper sheet on the first layer pcb board.
4. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: the first layer, second layer PCB
Via hole is offered on plate, the first layer, second layer pcb board are electrically connected by the via hole.
5. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: the second layer pcb board is equipped with
The area Di Tong.
6. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: the direct-through line is linear, institute
Stating coupling line is U-shaped.
7. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: be laid on the micro-strip cabling
Anti- solder flux.
8. a kind of PCB microstrip coupler according to claim 1, it is characterised in that: the width of the double-layer PCB board is
23.1mm, length 29.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821372593.4U CN208507909U (en) | 2018-08-24 | 2018-08-24 | A kind of PCB microstrip coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821372593.4U CN208507909U (en) | 2018-08-24 | 2018-08-24 | A kind of PCB microstrip coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208507909U true CN208507909U (en) | 2019-02-15 |
Family
ID=65300984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821372593.4U Active CN208507909U (en) | 2018-08-24 | 2018-08-24 | A kind of PCB microstrip coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208507909U (en) |
-
2018
- 2018-08-24 CN CN201821372593.4U patent/CN208507909U/en active Active
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