CN204271235U - The orthogonal directed coupler of a kind of 3dB - Google Patents
The orthogonal directed coupler of a kind of 3dB Download PDFInfo
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- CN204271235U CN204271235U CN201420696353.5U CN201420696353U CN204271235U CN 204271235 U CN204271235 U CN 204271235U CN 201420696353 U CN201420696353 U CN 201420696353U CN 204271235 U CN204271235 U CN 204271235U
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Abstract
The utility model discloses the orthogonal directed coupler of a kind of 3dB, comprise coupling device and metallic packaging device, coupling device comprises broadside coupled striplines, port match line and terminal, broadside coupled striplines comprises the upper coupling line and lower coupling line that are parallel to each other, upper coupling line is connected with corresponding terminal by port match line respectively with the two ends of lower coupling line, upper coupling line and lower coupling line are Curved Continuous folded structure, and port match line is asymmetric strip lines configuration.Terminal comprises upper terminal, lower terminal, for supporting the dielectric-slab of upper terminal and lower terminal, the arranged on left and right sides of dielectric-slab sinks copper, forms conduction bound edge.In the utility model, each wiring board all adopts printed board processing technology to realize, manufacturing process is simple, cost is low, volume production consistency is good, compact conformation, and size is little, terminal can directly be inserted in other radio-frequency module, be welded on the microstrip line of associated electronic circuitry, easy of integration, can be applicable in the mobile radio communication device of VHF/UHF frequency range.
Description
Technical field
The utility model relates to passive radio frequency device research field, particularly a kind of orthogonal directed coupler of 3dB being applied to VHF/UHF frequency range mobile radio communication device.
Background technology
The orthogonal directed coupler of existing VHF/UHF frequency range 3dB mainly contains following several implementation:
1. adopt the transformer of magnetic core coiling: affect by magnet ring frequency characteristic, be applicable to the occasion that operating frequency is relatively low, be widely used in HF frequency range, VHF low-frequency range Wireless Telecom Equipment.When VHF/UHF frequency range uses, power capacity is less, logical high-power time can produce certain non-linear, produce interference signal, affect communication efficiency.
2. adopt the coaxial coupling line of 3dB: be characterized in leaning on very closely and the inner wire of mutual insulating containing two in a common outer conductor, the insulating material of cable is exotic material.This kind of cable has formed fixing specification, when selecting, can select the coaxial coupling line of corresponding thickness, then determine the physical length of coupling line according to operation wavelength, usually get 1/4th of operating frequency place guide wavelength according to the power capacity size used.Because this quasi-coaxial coupling line outer conductor adopts copper pipe usually, therefore, more difficultly carry out minor radius bending, need in practical application to occupy larger installing space, be therefore difficult to use in VHF/UHF frequency range mobile radio communication device.
3.LTCC3dB coupler: LTCC material has higher dielectric constant, large between 3 ~ 60, easily realize the miniaturization of coupler, and perfect heat-dissipating, has a good application prospect, but current domestic LTCC Product Report is mainly from colleges and universities and research institute, industrialization process relatively lags behind, still need a large amount of funds and equipment investment, therefore, still there is certain bottleneck in commercial application.
Utility model content
Main purpose of the present utility model is that the shortcoming overcoming prior art is with not enough, the orthogonal directed coupler of a kind of 3dB is provided, its manufacturing process is simple, cost is low, volume production consistency is good, and compact conformation, volume is little, its terminal structure is easy to integrated with other circuit, has higher commercial application and is worth.
The purpose of this utility model is realized by following technical scheme: the orthogonal directed coupler of a kind of 3dB, comprise coupling device and metallic packaging device, coupling device is encapsulated in metallic packaging device, described coupling device comprises broadside coupled striplines, port match line and terminal, broadside coupled striplines comprises the upper coupling line and lower coupling line that are parallel to each other, upper coupling line is connected with corresponding terminal by port match line respectively with the two ends of lower coupling line, described upper coupling line and lower coupling line are Curved Continuous folded structure, and port match line is asymmetric strip lines configuration; Described terminal comprises upper terminal, lower terminal, for supporting the dielectric-slab of upper terminal and lower terminal, the arranged on left and right sides of dielectric-slab sinks copper, forms conduction bound edge.According to this terminal structure, it directly can be inserted during use and be installed to other radio-frequency module, the microstrip line of terminal and this radio-frequency module is directly overlapped, then burn-on scolding tin in lap-joint, can guarantee that terminal is connected with the reliable of microstrip line.
Preferably, described broadside coupled striplines also comprises ground plate on first, first medium plate and first time ground plate, first medium plate to be arranged on first in the middle of ground plate and first time ground plate, wherein ground plate is the single sided board that top layer all covers copper, bottom light face on first, upper coupling line is etched in first medium plate upper surface, lower coupling line is etched in first medium plate lower surface, the single sided board that first time ground plate is top layer light face, bottom all covers copper.Due to the performance of the orthogonal directed coupler of 3dB and the aligning accuracy of upper and lower coupling line closely related, therefore upper and lower coupling line is etched on same dielectric-slab, the exactitude position of upper and lower coupling line can be guaranteed by the etching precision that printed circuit board technology is higher, avoid upper and lower coupling line to be located at two pieces of different printed boards, then adopt during alternate manner contraposition and produce the problem that horizontal direction dislocation causes device volume production consistency difference.
Preferably, described port match line comprises ground plate on second, second medium plate, center conductor band and second time ground plate, second medium plate to be arranged on second in the middle of ground plate and second time ground plate, wherein ground plate is the single sided board that top layer all covers copper, bottom light face on second, center conductor band is etched in upper surface or the lower surface of second medium plate, the single sided board that second time ground plate is top layer light face, bottom all covers copper.
Preferably, on described first, on ground plate and second, ground plate is same sheet material, dielectric-slab in first medium plate, second medium plate and terminal is same sheet material, first time ground plate and second time ground plate are same sheet material, above-mentioned 3 blocks of sheet materials all adopt conventional printed board processing technology to make, and all select the polytetrafluoroethylene sheet material adding ceramic powder.Adopting conventional printed board processing technology to make makes manufacturing process threshold low, and economic input is few, and cost is low, and commercial application feasibility is high.The polytetrafluoroethylene sheet material adding ceramic powder has good heat conductivility, and compare with the common polytetrafluoroethylene sheet material of employing, power capacity obtains certain lifting, can meet high-power user demand.
Further, described upper coupling line and lower coupling line are continuous 90 degree of bending structures, thus can improve printed board utilance, and make coupler structure compact, volume is little, lightweight, is applicable to mobile communication equipment.
Preferably, described metallic packaging device comprises upper cover plate, lower cover and rivet, and wherein rivet is top-down runs through upper cover plate, coupling device and lower cover successively, carries out riveted joint and fixes.Coupling device and metallic packaging device form a whole by the form adopting rivet to install, and do not need can meet Specifications requirement through any debugging, device possesses good modular nature and interchangeability.
Concrete, described coupling device comprises 4 terminals, and wherein the first terminal is input port, and the second terminal is straightthrough port, and the 3rd terminal is coupling aperture, and the 4th terminal is isolated port, and straightthrough port is equal with coupling aperture amplitude output signal, phase 90 degree.
Concrete, the total length of described upper coupling line and lower coupling line is 1/4th of the guide wavelength of working signal.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, the utility model terminal adopts the integrated form of thin printed board metal hemming edge, and replace tradition in printed board, crimp the form of silver strip, cost reduces greatly, and insertable uses, and is easy to integrated with other circuit module.
2, in the utility model, upper coupling line and lower coupling line are etched on same dielectric-slab, and adopt continuous 90 degree of bending structures, have that precision is high, little, the lightweight advantage of compact conformation, volume, are applicable to mobile communication equipment.
3, in the utility model on first on ground plate and second ground plate be same sheet material, dielectric-slab in first medium plate, second medium plate and terminal is same sheet material, first time ground plate and second time ground plate are same sheet material, above-mentioned 3 blocks of sheet materials all adopt conventional printed board processing technology to make, technological requirement is low, material cost and low cost of manufacture, industrialization threshold is low, is easy to acquisition and widely uses.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of embodiment 1.
Fig. 2 is the structure composition schematic diagram of coupling device in embodiment 1.
Fig. 3 is the cross section structure schematic diagram at broadside coupled striplines place in embodiment 1.
Fig. 4 is the cross section structure schematic diagram at embodiment 1 middle port matched line place.
Fig. 5 is embodiment 1 middle-end attached bag limit structural representation before treatment.
Fig. 6 is the structural representation after the process of embodiment 1 middle-end attached bag limit.
Wherein: the dielectric-slab in the center conductor band under the upper ground plate of 1-dielectric-slab, 2-, 3-under ground plate, 4-upper cover plate, 5-lower cover, 6-rivet, the upper coupling line of 7-, 8-in coupling line, 10-port match line, 11-upper terminal, 12-lower terminal, 13-terminal, 14-the first terminal, 15-second terminal, 16-the 3rd terminal, 17-the 4th terminal.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, the orthogonal directed coupler of a kind of 3dB, comprises coupling device and metallic packaging device.Described coupling device comprises broadside coupled striplines, port match line and terminal, in the present embodiment, ground plate in broadside coupled striplines first, first medium plate, first time ground plate are same sheet material with ground plate, second medium plate, second time ground plate on second in port match line respectively, are the upper ground plate 2 in figure, dielectric-slab 1, lower ground plate 3.Upper ground plate 2 is the single sided board that top layer all covers copper, bottom light face, the single sided board that lower ground plate 3 is top layer light face, bottom all covers copper.In the present embodiment, the polytetrafluoroethylene sheet material adding ceramic powder all selected by upper ground plate 2, dielectric-slab 1 and lower ground plate 3, and all adopt conventional printed board processing technology to make.In the present embodiment, metallic packaging device comprises upper cover plate 4, lower cover 5 and rivet 6, and wherein rivet 6 is top-down runs through upper cover plate 4, coupling device and lower cover 5, carries out riveted joint and fixes.Upper cover plate 4, lower cover 5 are high rigidity sheet metal.
As shown in Figure 2,3, broadside coupled striplines comprises ground plate on first, upper coupling line 7, first medium plate, lower coupling line 8 and first time ground plate from top to bottom successively, upper coupling line 7 is etched in first medium plate upper surface, lower coupling line 8 is etched in first medium plate lower surface, the two is parallel to each other, and upper coupling line 7 is connected with terminal respectively by the center conductor band 10 in port match line with the two ends of lower coupling line 8.Upper coupling line 7 and lower coupling line 8 are continuous 90 degree of bending structures, and total length is 1/4th of the guide wavelength of working signal.
As shown in Figure 1, port match line is arranged on the two ends of broadside coupled striplines, totally 4, the structural section figure of one of them port match line as shown in Figure 4, comprise ground plate on second, second medium plate, center conductor band 10 and second time ground plate, center conductor band 10 is etched in the upper surface of second medium plate, is therefore asymmetric strip lines configuration.
A terminal is connected respectively in each port match line one end, actual 4 the installation pins for exposing coupling plate of terminal, as shown in Figure 2, the first terminal 14 is input port, second terminal 15 is straightthrough port, and the 3rd terminal 16 is coupling aperture, and the 4th terminal 17 is isolated port, straightthrough port 15 is equal with coupling aperture 16 amplitude output signal, phase 90 degree.The structure of each terminal as shown in Figure 5, the dielectric-slab 13 comprising upper terminal 11, lower terminal 12 and support upper and lower terminal (in actual applications, this dielectric-slab and first medium plate, second medium plate adopt same sheet material), when making, the arranged on left and right sides of this dielectric-slab 13 sinks copper, form conduction bound edge, structure as shown in Figure 6, thus is easier to other circuit module integrated.
The present embodiment, described metallic packaging device and coupling device are riveted by rivet 6, but in actual applications, also can adopt other connected mode completely, such as be threaded, the mode such as bonding, make coupling device and metallic packaging device form a complete coupler.
The orthogonal directed coupler of 3dB described in the present embodiment typical index is as follows: within the scope of 225MHz ~ 512MHz working frequency range, degree of coupling flatness is not more than ± 0.7dB, directivity is greater than 20dB, and power capacity reaches 200W, and overall device physical dimension is only 50.8mm × 12.7mm × 3.3mm.
Operation principle of the present utility model is: coupling device is two paths of signals input signal by certain power division specific output.Port match bundle of lines input signal and output signal are transferred to each port substantially.Signal inputs from the first terminal 14, and the second terminal 15 and the 3rd terminal 16 are signal output port, and these two port output signal amplitudes are equal, and phase 90 degree is namely mutually orthogonal, possesses certain isolation between the second terminal 15 and the 3rd terminal 16.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (9)
1. the orthogonal directed coupler of 3dB, it is characterized in that, comprise coupling device and metallic packaging device, coupling device is encapsulated in metallic packaging device, described coupling device comprises broadside coupled striplines, port match line and terminal, broadside coupled striplines comprises the upper coupling line and lower coupling line that are parallel to each other, upper coupling line is connected with corresponding terminal by port match line respectively with the two ends of lower coupling line, described upper coupling line and lower coupling line are Curved Continuous folded structure, and port match line is asymmetric strip lines configuration; Described terminal comprises upper terminal, lower terminal, for supporting the dielectric-slab of upper terminal and lower terminal, the arranged on left and right sides of dielectric-slab sinks copper, forms conduction bound edge.
2. the orthogonal directed coupler of 3dB according to claim 1, it is characterized in that, described broadside coupled striplines also comprises ground plate on first, first medium plate and first time ground plate, first medium plate to be arranged on first in the middle of ground plate and first time ground plate, wherein ground plate is the single sided board that top layer all covers copper, bottom light face on first, upper coupling line is etched in first medium plate upper surface, lower coupling line is etched in first medium plate lower surface, the single sided board that first time ground plate is top layer light face, bottom all covers copper.
3. the orthogonal directed coupler of 3dB according to claim 2, it is characterized in that, described port match line comprises ground plate on second, second medium plate, center conductor band and second time ground plate, second medium plate to be arranged on second in the middle of ground plate and second time ground plate, wherein ground plate is the single sided board that top layer all covers copper, bottom light face on second, center conductor band is etched in upper surface or the lower surface of second medium plate, the single sided board that second time ground plate is top layer light face, bottom all covers copper.
4. the orthogonal directed coupler of 3dB according to claim 3, it is characterized in that, on described first, on ground plate and second, ground plate is same sheet material, dielectric-slab in first medium plate, second medium plate and terminal is same sheet material, first time ground plate and second time ground plate are same sheet material, and above-mentioned 3 blocks of sheet materials all adopt conventional printed board processing technology to make.
5. the orthogonal directed coupler of 3dB according to claim 4, is characterized in that, the polytetrafluoroethylene sheet material adding ceramic powder all selected by above-mentioned 3 blocks of sheet materials.
6. the orthogonal directed coupler of 3dB according to claim 1, is characterized in that, described upper coupling line and lower coupling line are continuous 90 degree of bending structures.
7. the orthogonal directed coupler of 3dB according to claim 1, is characterized in that, described metallic packaging device comprises upper cover plate, lower cover and rivet, and wherein rivet is top-down runs through upper cover plate, coupling device and lower cover, carries out riveted joint and fixes.
8. the orthogonal directed coupler of 3dB according to claim 1, it is characterized in that, described coupling device comprises 4 terminals, wherein the first terminal is input port, second terminal is straightthrough port, and the 3rd terminal is coupling aperture, and the 4th terminal is isolated port, straightthrough port is equal with coupling aperture amplitude output signal, phase 90 degree.
9. the orthogonal directed coupler of 3dB according to claim 1, is characterized in that, the total length of described upper coupling line and lower coupling line is 1/4th of the guide wavelength of working signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696353.5U CN204271235U (en) | 2014-11-19 | 2014-11-19 | The orthogonal directed coupler of a kind of 3dB |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420696353.5U CN204271235U (en) | 2014-11-19 | 2014-11-19 | The orthogonal directed coupler of a kind of 3dB |
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| CN204271235U true CN204271235U (en) | 2015-04-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549687A (en) * | 2016-10-31 | 2017-03-29 | 努比亚技术有限公司 | A kind of signal transmission system and mobile terminal based on serpentine |
| CN110519977A (en) * | 2019-08-20 | 2019-11-29 | 深圳市深大唯同科技有限公司 | A kind of calibration network device and antenna |
-
2014
- 2014-11-19 CN CN201420696353.5U patent/CN204271235U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549687A (en) * | 2016-10-31 | 2017-03-29 | 努比亚技术有限公司 | A kind of signal transmission system and mobile terminal based on serpentine |
| CN106549687B (en) * | 2016-10-31 | 2019-08-30 | 努比亚技术有限公司 | A kind of signal transmission system and mobile terminal based on serpentine |
| CN110519977A (en) * | 2019-08-20 | 2019-11-29 | 深圳市深大唯同科技有限公司 | A kind of calibration network device and antenna |
| CN110519977B (en) * | 2019-08-20 | 2020-09-11 | 深圳市深大唯同科技有限公司 | Calibration network device and antenna |
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