CN106356603A - Broadband probe coaxial coupler - Google Patents
Broadband probe coaxial coupler Download PDFInfo
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- CN106356603A CN106356603A CN201610966078.8A CN201610966078A CN106356603A CN 106356603 A CN106356603 A CN 106356603A CN 201610966078 A CN201610966078 A CN 201610966078A CN 106356603 A CN106356603 A CN 106356603A
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- 239000000523 sample Substances 0.000 title claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 81
- 230000008878 coupling Effects 0.000 claims abstract description 66
- 238000010168 coupling process Methods 0.000 claims abstract description 66
- 238000005859 coupling reaction Methods 0.000 claims abstract description 66
- 239000012212 insulator Substances 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The invention discloses a broadband probe coaxial coupler. The broadband probe coaxial coupler comprises a main connector and a coupling connector, wherein the main connector comprises an inner main connector conductor, an outer main connector conductor and a main connector insulator; the coupling connector comprises an inner coupling connector conductor, an outer coupling connector conductor and a coupling connector insulator; the outer main connector conductor comprises a cylindrical cylinder body, at least one radial through hole is formed in the cylinder body, the coupling connector is detachably and fixedly mounted at the radial through hole, and the inner coupling connector conductor is coaxially arranged with the radial through hole; and at least one low-impedance section is arranged among the inner coupling connector conductor, the outer coupling connector conductor and the outer main connector conductor. The broadband probe coaxial coupler has the beneficial effect that the structure is simple, the loading capacity is large, and the intermodulation effect is low; and furthermore, the increase of the coupling degree along the frequency is effectively reduced, a coupling degree curve can meet the coupling flatness requirement in a relatively wide frequency band range such as 1.7GHz-3.6GHz, and the precision of microwave signal detection is greatly improved.
Description
Technical field
The present invention relates to a kind of for communicating, the probe coaxial coupler in the Microwave transmission technology field such as radar, particularly
It is related to a kind of wide band wideband probe coaxial coupler.
Background technology
Similar to the power divider of no isolation, it is mainly used in microwave signal coupling in specific proportions to probe coaxial coupler
Close or synthesis power, be one of conventional element in microwave technical field, how to be occurred with coaxial configuration.Generally in main transmission line
Upper increase by a part being used for coupling output, thus realizing that to distribute specific power from main transmission line defeated from another port
Go out, input power is the degree of coupling with the relation coupling between output.The feature of probe coaxial coupler is that structure is simple, holds
Carry that power is big, mutually turn down.
Existing wideband probe coaxial coupler, such as Chinese utility model patent, Patent No.
A kind of structure disclosed in zl201420082592.1, it includes coaxial wire body and the adapter vertical with coaxial wire body, institute
State the first inner wire, the first insulator and the first outer conductor that coaxial wire body includes being sequentially distributed from inside to outside, described first is exhausted
Edge body is located between the first inner wire and the first outer conductor, makes the first inner wire mutually isolated with the first outer conductor；Described company
Connect device and include the second outer conductor and the second inner wire, described second inner wire be embedded in the second outer conductor and by insulator with
Second outer conductor isolation；Described second inner wire and the first inner wire interval setting, and the second inner wire and the first inner wire phase
Mutually vertical.The coaxial coupler of this structure have coupling rise and fall little, mutually turn down, the little advantage of standing-wave ratio, but using process
In also have the disadvantage in that i.e. its degree of coupling increases with frequency and significantly increases, lead to degree of coupling curve in broader frequency band model
The Coupling flatness that bonder cannot be met in enclosing requires, thus greatly reducing the microwave signal accuracy of detection of bonder.
Content of the invention
The technical problem to be solved in the present invention is that offer one kind is not only simple in structure, load power is big, mutually turns down, Er Qieneng
Effectively reduce the amplitude that the degree of coupling increases with frequency, making degree of coupling curve meet Coupling flatness in broader frequency band range will
Ask, greatly improve the wideband probe coaxial coupler of microwave signal accuracy of detection.
For solving above-mentioned technical problem, the present invention adopts such a wideband probe coaxial coupler, including main connector
With the device that is of coupled connections；Described main connector includes main connector inner wire, main connector outer conductor and is arranged on described main connection
Main connector insulator between device inner and outer conductor, the described device that is of coupled connections include being of coupled connections device inner wire, be of coupled connections device
Outer conductor and the device insulator that is of coupled connections being of coupled connections between device inner and outer conductor described in being arranged on, lead outside described main connector
Body has a columnar stack shell and offers at least one radial direction through hole on stack shell, described is of coupled connections device removably
It is fixedly mounted at the radial direction through hole of described main connector outer conductor, and the device inner wire that is of coupled connections is coaxial with described radial direction through hole
Line is arranged, in the described device inner wire and be of coupled connections between device outer conductor and main connector outer conductor and be provided with least of being of coupled connections
Individual Low ESR section.
As a kind of preferred implementation of the present invention, the described device inner wire that is of coupled connections is by along main connector outer conductor
Stack shell radially from inside to outside sequentially coaxially the first minor diameter shaft part of arrangement, the first major diameter shaft part, second largest diameter shaft part and
The multidiameter that second minor diameter shaft part is constituted；Described first minor diameter shaft part and the first major diameter shaft part are located at described main connector
In the radial direction through hole of outer conductor, and the axle head of the first minor diameter shaft part and main connector inner wire interval setting, described first is big
There is between diameter shaft part and radial direction through hole the air gap of 0.1～0.2mm, described second largest diameter shaft part and the second minor diameter
Shaft part is located in the stack shell of the described device outer conductor that is of coupled connections, and the described device insulator that is of coupled connections tightly is inlaid in described coupling
Close between adapter outer conductor and second largest diameter shaft part and the second minor diameter shaft part.
As a modification of the present invention, between described first minor diameter shaft part and main connector inner wire, it is additionally provided with one
The individual coupling insulator with circular flanging and drum-shaped staving, described coupling insulator is tightly placed in the first minor diameter shaft part
On, the circular ladle body of described staving is tightly inlaid between described main connector outer conductor and the first minor diameter shaft part,
And the wall thickness of described circular ladle body is 0.6～0.9mm, the tabular drum head of described staving is parallel with main connector inner wire,
Interval setting, described circular flanging is offseted with the axle head of the first major diameter shaft part.
As a further improvement on the present invention, it is of coupled connections between device outer conductor and second largest diameter shaft part positioned at described
Be of coupled connections device insulator wall thickness be 0.4～0.6mm.
As a preferred embodiment of the present invention, the air gap between described first major diameter shaft part and radial direction through hole
For 0.15mm, the wall thickness of the circular ladle body of described coupling insulator is 0.75mm, positioned at device outer conductor and second of being of coupled connections
The wall thickness of the device insulator that is of coupled connections between major diameter shaft part is 0.5mm.
In the present invention, described main connector is preferably radio frequency (RF) coaxial connector.
After said structure, the method have the advantages that
If the present invention passes through in device inner wire and the setting between device outer conductor and main connector outer conductor that is of coupled connections of being of coupled connections
Dry Low ESR section, being equivalent to and is incorporated to several electric capacity in path, forming low-pass first order filter, thus effectively reducing coupling
The right amplitude increasing with frequency, makes degree of coupling curve meet Coupling flatness requirement in broader frequency band range, significantly
Improve microwave signal accuracy of detection.
The present invention passes through to lead to the radial direction of main connector outer conductor in the first major diameter shaft part of the device inner wire that is of coupled connections
The air gap of 0.1～0.2mm is set between hole, thus in the setting between device inner wire and main connector outer conductor that is of coupled connections
First Low ESR section, is equivalent to and is incorporated to an electric capacity in path, forms low-pass first order filter, thus effectively reducing
The amplitude that the degree of coupling increases with frequency, makes degree of coupling curve meet Coupling flatness requirement in broader frequency band range.
The present invention passes through the circular ladle body of coupling insulator to arrange the wall thickness of 0.6～0.9mm, thus being of coupled connections
It is provided with second Low ESR section between device inner wire and main connector outer conductor, be equivalent in path and link second electricity
Hold, two shunt capacitances form low-pass first order filter, thus reduce further the amplitude that the degree of coupling increases with frequency, make coupling
Right curve preferably meets Coupling flatness requirement in broader frequency band range.
The present invention passes through to set the device insulator that is of coupled connections being of coupled connections between device outer conductor and second largest diameter shaft part
Set to 0 the wall thickness of .4～0.6mm, thus the device inner wire and being of coupled connections between device outer conductor of being of coupled connections be provided with the 3rd low
Impedance section, is equivalent in path and links the 3rd electric capacity, and three shunt capacitances form low-pass first order filter, thus more entering
One step reduces the amplitude that the degree of coupling increases with frequency, makes degree of coupling curve preferably meet coupling in broader frequency band range
Close flatness requirement, substantially increase microwave signal accuracy of detection.
The air gap between the present invention the first major diameter shaft part and radial direction through hole is more preferably 0.15mm, and coupling is absolutely
The wall thickness of the circular ladle body of edge is more preferably 0.75mm, positioned at device outer conductor and the second largest diameter shaft part of being of coupled connections
Between the wall thickness of the device insulator that is of coupled connections be more preferably 0.5mm.Using this spline structure, can larger reduce the degree of coupling
The amplitude increasing with frequency, makes degree of coupling curve preferably meet coupling in broader frequency band range such as 1.7-3.6ghz flat
Degree requires, and the accuracy of detection of microwave signal is more accurate.
The present invention can adjust the device that is of coupled connections to main connection by the thickness of the tabular drum head of adjustment coupling insulator
Electrical length between device inner wire, thus play the fine setting effect to the degree of coupling.
Present configuration is simple, and load power is big, mutually turns down.
Brief description
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is a kind of structural representation of wideband probe coaxial coupler of the present invention.
Fig. 2 is a kind of structural representation of main connector inner wire in the present invention.
Fig. 3 is the schematic front view of main connector outer conductor in the present invention.
Fig. 4 is the cross-sectional schematic in Fig. 3 along a-a line.
Fig. 5 is the schematic top plan view of main connector outer conductor in the present invention.
Fig. 6 is a kind of structural representation of main connector insulator in the present invention.
Fig. 7 is a kind of structural representation of the device inner wire that is of coupled connections in the present invention.
Fig. 8 is a kind of structural representation of the device outer conductor that is of coupled connections in the present invention.
Fig. 9 is the schematic top plan view of the device outer conductor that is of coupled connections in the present invention.
Figure 10 is a kind of structural representation of the device insulator that is of coupled connections in the present invention.
Figure 11 is arranged on a kind of mounting structure schematic diagram at radial direction through hole for the device that is of coupled connections in the present invention.
Figure 12 is a kind of structural representation coupling insulator in the present invention.
Specific embodiment
Referring to a kind of wideband probe coaxial coupler shown in Fig. 1 to Figure 12, including main connector 1 and the device 2 that is of coupled connections；
Described main connector 1 include main connector inner wire 1-1, main connector outer conductor 1-2 and be arranged in described main connector,
Outer conductor 1-1, the main connector insulator 1-3 between 1-2, the described device 2 that is of coupled connections includes the device inner wire that is of coupled connections
2-1, be of coupled connections device outer conductor 2-2 and device inner and outer conductor 2-1 that is of coupled connections described in being arranged on, and the coupling between 2-2 is even
Meet device insulator 2-3, described main connector outer conductor 1-2 has a columnar stack shell and offers at least on stack shell
One radial direction through hole 3, the described device 2 that is of coupled connections be removably secured be arranged on described main connector outer conductor 1-2 radial direction lead to
At hole 3, and be of coupled connections device inner wire 2-1 and described radial direction through hole 3 coaxial line arrangement, in the described device inner wire that is of coupled connections
2-1 and be of coupled connections between device outer conductor 2-2 and main connector outer conductor 1-2 and be provided with least one Low ESR section.At this
In bright, as shown in Fig. 1,3,4,5,11, the present invention is fixedly mounted on main connection by the screw 5 device outer conductor 2-2 that will be of coupled connections
At the radial direction through hole 3 of device outer conductor 1-2, thus the device 2 that will be of coupled connections is removably secured being arranged at radial direction through hole 3, described
Radial direction through hole 3 is illustrated as one, and the present invention can be provided with multiple, and in figure is not shown.In addition, described main connector insulator 1-3 can set
It is along main connector inner wire 1-1 each axially back and forth, in main connector insulator 1-3 and main connector inner and outer conductor
It is respectively equipped with a sealing ring 6, main connection at two in front and back between 1-1,1-2 and on the front end face of main connector outer conductor 1-2
Device insulator 1-3 ensures that the support of main connector 1 is good, and sealing ring 6 ensures the inside and outside portion sealing of main connector 1.
As a kind of preferred implementation of the present invention, as shown in Fig. 1,7,11, the described device inner wire 2-1 that is of coupled connections
Be by along main connector outer conductor 1-2 stack shell radially from inside to outside sequentially coaxially the first minor diameter shaft part 2-1a of arrangement, the
One major diameter shaft part 2-1b, second largest diameter shaft part 2-1c and the multidiameter of the second minor diameter shaft part 2-1d composition；Described
One minor diameter shaft part 2-1a and the first major diameter shaft part 2-1b is located at the radial direction through hole 3 of described main connector outer conductor 1-2
Interior, and the axle head of the first minor diameter shaft part 2-1a and main connector inner wire 1-1 interval setting, described first major diameter shaft part
There is between 2-1b and radial direction through hole 3 the air gap l1 of 0.1～0.2mm, described second largest diameter shaft part 2-1c and second
Minor diameter shaft part 2-1d is located in the stack shell of the described device outer conductor 2-2 that is of coupled connections, the described device insulator 2-3 that is of coupled connections
Be of coupled connections described in being tightly inlaid in device outer conductor 2-2 and second largest diameter shaft part 2-1c and the second minor diameter shaft part
Between 2-1d.
As a modification of the present invention, as shown in Fig. 1,11,12, in described first minor diameter shaft part 2-1a and main company
Connect and between device inner wire 1-1, be additionally provided with a coupling insulator 4 with circular flanging 4-1 and drum-shaped staving, described
Coupling insulator 4 is tightly placed on the first minor diameter shaft part 2-1a, and the circular ladle body 4-2a of described staving is tightly embedded in
Between described main connector outer conductor 1-2 and the first minor diameter shaft part 2-1a, and the wall thickness of described circular ladle body 4-2a
L2 is 0.6～0.9mm, and the tabular drum head 4-2b of described staving is parallel with main connector inner wire 1-1, interval setting, institute
The axle head stating circular flanging 4-1 with the first major diameter shaft part 2-1b offsets.The present invention can be by adjusting tabular drum head 4-
The thickness w of 2b, to adjust the electrical length between main connector inner wire for the device that is of coupled connections, thus play the degree of coupling is carried out micro-
The beneficial effect adjusted.
As a further improvement on the present invention, as shown in figure 11, positioned at the described device outer conductor 2-2 and second that is of coupled connections
The wall thickness l3 of the device insulator 2-3 that is of coupled connections between major diameter shaft part 2-1c is 0.4～0.6mm.
As a preferred embodiment of the present invention, the sky between described first major diameter shaft part 2-1b and radial direction through hole 3
Gas gap l1 is 0.15mm, and the wall thickness l2 of the circular ladle body 4-2a of described coupling insulator 4 is 0.75mm, positioned at coupling even
The wall thickness l3 meeting the device insulator 2-3 that is of coupled connections between device outer conductor 2-2 and second largest diameter shaft part 2-1c is 0.5mm.
Using this spline structure, can larger reduce the amplitude that the degree of coupling increases with frequency, make degree of coupling curve in broader frequency band range
As 1.7-3.6ghz preferably meets Coupling flatness requirement, the accuracy of detection of microwave signal is more accurate.
In the present invention, described main connector 1 is preferably radio frequency (RF) coaxial connector.
As shown in Fig. 1,11, the present invention pass through the device inner wire 2-1 that is of coupled connections the first major diameter shaft part 2-1b with
The air gap l1 of 0.1～0.2mm is set between the radial direction through hole 3 of main connector outer conductor 1-2, thus in the device that is of coupled connections
It is provided with first Low ESR section a, by the circle of insulator 4 will be coupled between inner wire 2-1 and main connector outer conductor 1-2
The wall thickness l2 of ring-type ladle body 4-2a is set to 0.6～0.9mm, thus being of coupled connections outside device inner wire 2-1 and main connector
It is provided with second Low ESR section b, by device outer conductor 2-2 and the second largest diameter shaft part of being of coupled connections between conductor 1-2
The wall thickness l3 of the device insulator 2-3 that is of coupled connections between 2-1c is set to 0.4～0.6mm, thus leading in the device that is of coupled connections
Body 2-1 and be of coupled connections between device outer conductor 2-2 and be provided with the 3rd Low ESR section c, the present invention passes through in the device that is of coupled connections
Inner wire 2-1 and be of coupled connections between device outer conductor 2-2 and main connector outer conductor 1-2 several Low ESR sections, example are set
One described above or two or three Low ESR sections, are equivalent in path and link several electric capacity, for example simultaneously in parallel
Enter one or two or three electric capacity, described electric capacity forms low-pass first order filter, thus effectively reducing the degree of coupling with frequency
The amplitude increasing, makes degree of coupling curve as 1.7-3.6ghz meets Coupling flatness requirement, greatly in broader frequency band range
Improve greatly microwave signal accuracy of detection.
Through on probation, the present invention is not only simple in structure, load power big, mutually turn down, and effectively reduce the degree of coupling with
The amplitude that frequency increases, makes degree of coupling curve want as 1.7-3.6ghz meets Coupling flatness in broader frequency band range
Ask, substantially increase microwave signal accuracy of detection, achieve good effect.
Claims (6)
1. a kind of wideband probe coaxial coupler, including main connector (1) and the device that is of coupled connections (2)；Described main connector (1) bag
Include main connector inner wire (1-1), main connector outer conductor (1-2) and be arranged on described main connector inner and outer conductor (1-
1,1-2) the main connector insulator (1-3) between, the described device that is of coupled connections (2) includes being of coupled connections device inner wire (2-
1), be of coupled connections device outer conductor (2-2) and the coupling being of coupled connections between device inner and outer conductor (2-1,2-2) described in being arranged on
Connector insulator (2-3), described main connector outer conductor (1-2) has a columnar stack shell and opens up on stack shell
There is at least one radial direction through hole (3), the described device that is of coupled connections (2) is removably secured and is arranged on described main connector outer conductor
(1-2) radial direction through hole (3) place, and be of coupled connections device inner wire (2-1) and described radial direction through hole (3) coaxial line arrangement, its
It is characterised by: be of coupled connections device inner wire (2-1) and device outer conductor (2-2) and the main connector outer conductor of being of coupled connections described
(1-2) it is provided with least one Low ESR section between.
2. wideband probe coaxial coupler according to claim 1 it is characterised in that: the described device inner wire that is of coupled connections
(2-1) it is by the first minor diameter shaft part along main connector outer conductor (1-2) stack shell radially sequentially coaxially arrangement from inside to outside
(2-1a), the first major diameter shaft part (2-1b), second largest diameter shaft part (2-1c) and the second minor diameter shaft part (2-1d) structure
The multidiameter becoming；Described first minor diameter shaft part (2-1a) and the first major diameter shaft part (2-1b) are located at outside described main connector
In the radial direction through hole (3) of conductor (1-2), and the axle head of the first minor diameter shaft part (2-1a) and main connector inner wire (1-1)
Interval setting, has the air gap of 0.1～0.2mm between described first major diameter shaft part (2-1b) and radial direction through hole (3)
(l1), described second largest diameter shaft part (2-1c) and the second minor diameter shaft part (2-1d) are located at the described device outer conductor that is of coupled connections
(2-2) in stack shell, the described device insulator (2-3) that is of coupled connections tightly be inlaid in described in be of coupled connections device outer conductor
(2-2) and second largest diameter shaft part (2-1c) and the second minor diameter shaft part (2-1d) between.
3. wideband probe coaxial coupler according to claim 2 it is characterised in that: in described first minor diameter shaft part
(2-1a) it is additionally provided with one and main connector inner wire (1-1) between and there is circular flanging (4-1) and drum-shaped staving
Coupling insulator (4), described coupling insulator (4) be tightly placed on the first minor diameter shaft part (2-1a), described staving circular
Ladle body (4-2a) is tightly inlaid between described main connector outer conductor (1-2) and the first minor diameter shaft part (2-1a),
And the wall thickness (l2) of described circular ladle body (4-2a) is 0.6～0.9mm, the tabular drum head (4-2b) of described staving with main
Adapter inner wire (1-1) is parallel, interval setting, described circular flanging (4-1) and the first major diameter shaft part (2-1b)
Axle head offsets.
4. wideband probe coaxial coupler according to claim 3 it is characterised in that: lead outside the described device that is of coupled connections
The wall thickness (l3) of device insulator (2-3) that be of coupled connections between body (2-2) and second largest diameter shaft part (2-1c) be 0.4～
0.6mm.
5. wideband probe coaxial coupler according to claim 4 it is characterised in that: described first major diameter shaft part (2-
1b) the air gap (l1) and radial direction through hole (3) between is 0.15mm, the circular ladle body (4- of described coupling insulator (4)
Wall thickness (l2) 2a) is 0.75mm, positioned at being of coupled connections between device outer conductor (2-2) and second largest diameter shaft part (2-1c)
Be of coupled connections device insulator (2-3) wall thickness (l3) be 0.5mm.
6. wideband probe coaxial coupler according to any one of claim 1 to 5 it is characterised in that: described main connection
Device (1) is radio frequency (RF) coaxial connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610966078.8A CN106356603B (en) | 2016-11-02 | 2016-11-02 | Broadband probe coaxial coupler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610966078.8A CN106356603B (en) | 2016-11-02 | 2016-11-02 | Broadband probe coaxial coupler |
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| CN106356603A true CN106356603A (en) | 2017-01-25 |
| CN106356603B CN106356603B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610966078.8A Active CN106356603B (en) | 2016-11-02 | 2016-11-02 | Broadband probe coaxial coupler |
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| CN107331931A (en) * | 2017-09-04 | 2017-11-07 | 江苏贝孚德通讯科技股份有限公司 | A kind of waveguide probe coupler |
| CN109004322A (en) * | 2018-07-09 | 2018-12-14 | 北京格润海泰科技有限公司 | The curved formula coupler of small-volume large-power under a kind of harsh environment |
| CN109950731A (en) * | 2019-03-28 | 2019-06-28 | 中国电子科技集团公司第十二研究所 | A kind of SMA radio frequency connector |
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| CN109950731A (en) * | 2019-03-28 | 2019-06-28 | 中国电子科技集团公司第十二研究所 | A kind of SMA radio frequency connector |
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| CN106356603B (en) | 2022-02-18 |
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