CN220585478U - Short wave broadband directional coupler - Google Patents
Short wave broadband directional coupler Download PDFInfo
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- CN220585478U CN220585478U CN202321840147.2U CN202321840147U CN220585478U CN 220585478 U CN220585478 U CN 220585478U CN 202321840147 U CN202321840147 U CN 202321840147U CN 220585478 U CN220585478 U CN 220585478U
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- 230000007246 mechanism Effects 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001965 increasing effect Effects 0.000 abstract description 5
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- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a short wave broadband directional coupler which comprises an outer conductor, an inner conductor and a plurality of coupling heads, wherein the outer conductor is of a cavity structure, the inner conductor is arranged in the outer conductor through a supporting component, the coupling heads are arranged on a mounting seat, the mounting seat is arranged on the outer side of the outer conductor, the working wavelength of the coupling heads is short wave, and the coupling heads are provided with structures for increasing the coupling degree; the coupling head of the utility model can be adjusted along the radial direction of the main line of the coupler so as to achieve the required coupling degree index. The coupling is enhanced by lengthening the distance between the coupling port and the load port and increasing the size of the coupling plate, so that the coupling degree of the coupling head in the frequency range of 5.5-16.5MHz can reach 65dB without being too close to the main line.
Description
Technical Field
The utility model relates to a short wave broadband directional coupler.
Background
The directional coupler is an important radio frequency passive device, and the power signals in the radio frequency path are taken out according to a certain proportion, and then the taken power signals are detected and analyzed. The directional coupler is widely applied to various radio frequency microwave systems and monitors the working state of the whole radio frequency system. The directional coupler can be classified into a strong directional coupler (coupling degree is in the range of 0 to-10 dB), a medium directional coupler (coupling degree is in the range of-10 to-20 dB) and a weak directional coupler (coupling degree is less than-20 dB) according to the difference of coupling degrees. In general, weak directional couplers are used for detection and monitoring of radio frequency systems.
However, in the high-frequency weak directional coupler with a common structure, the structure of the coupling head moving part is a cylindrical metal block with adjustable height position and rotation angle, and the distance between the coupling port and the load port is relatively small. The structure is used for the frequency band of 5.5-16.5MHz, and the coupling is weak, so that the coupling degree requirement of 65dB can not be met.
The utility model comprises the following steps:
the utility model aims to solve the defects in the prior art and provides a short wave broadband directional coupler.
The utility model provides a shortwave broadband directional coupler, includes outer conductor, inner conductor, a plurality of coupling heads, and the outer conductor is the cavity structure, and the inner conductor passes through supporting component to be installed in the outer conductor, and the coupling head is installed on the mount pad, and the mount pad is installed in the outside of outer conductor, and the operating wavelength of coupling head is shortwave, is equipped with the structure that increases the coupling degree on the coupling head.
Working principle: the weak directional coupler with high frequency and common structure has a cylindrical metal block with adjustable height and rotation angle, and the distance between the coupling port and the load port is relatively small, and the weak directional coupler is used in 5.5-16.5MHz frequency band and weak coupling, and can not meet the 65dB coupling degree requirement;
the structure ensures that the coupling degree of the coupling head in the frequency range of 5.5-16.5MHz can reach 65dB in a proper movable range through a specific structure, and the coupling degree in the working frequency range meets 65+/-0.1 dB, and the directivity is better than 30dB.
In order to realize the function of enhancing the coupling degree, the coupling head comprises a shell, the shell is cuboid, a coupling port and a load port are arranged on the shell, a preset distance is arranged between the coupling port and the load port, conductors are arranged in the coupling port and the load port, the two conductors are connected through a coupling plate with a preset size, the distance between the coupling port and the load port is prolonged, and the size of the coupling plate is increased, so that the coupling is enhanced, and the coupling degree of the coupling head in a frequency range of 5.5-16.5MHz can reach 65dB in a proper movable range;
meanwhile, due to the change of the structural dimensions of the coupling head and the coupling plate, the coupling head does not need to rotate around the axis of the coupling head to adjust the directivity index, so that a rotating mechanism of the coupling head is omitted, the coupling head is designed into a rectangle, the space is saved, and the processing cost and the debugging difficulty are reduced. The structure is simplified, and meanwhile, excellent radio frequency indexes (such as reflection loss, insertion loss, directivity and the like) are also provided.
In order to achieve the required coupling degree index, the coupling head is provided with a radial adjusting mechanism which is used for controlling the coupling head to radially adjust along the outer conductor structure.
In order to lock the coupling head which is debugged to a proper position, a locking piece for fixing the coupling head is arranged on the mounting seat, the locking piece is used for locking the coupling head after adjustment, the upper end face of the locking piece is provided with a groove matched with the coupling head shell, the coupling head is embedded in the groove, a plurality of through holes are formed in the side of the locking piece, a groove opposite to the through holes is formed in the side of the coupling head shell, the same jackscrew is arranged in the groove and the through holes in a penetrating mode, the traditional compression ring structure is changed into a side locking mode that jackscrews jack into grooves, the position change of the coupling head caused in the locking process is smaller, the locking is more convenient when indexes are locked well, and the debugging efficiency is higher.
In order to achieve better indexes of the coupler, the outer conductor adopts an aluminum alloy integrated processing technology, and compared with a round tube welding technology, the processing precision is higher, the processing cost is lower, and the appearance is more attractive.
In order to install the inner conductor in the outer conductor, prevent simultaneously that the inner and outer conductor from interfering each other, the supporting component includes a plurality of flanges and insulating support piece, and the port department at outer conductor both ends is fixed to the flange, and insulating support piece is embedded in the flange, and insulating support piece center department is equipped with the through-hole that is used for wearing to establish the inner conductor, guarantees like this that outer conductor and inner conductor are coaxial and the inner conductor can not follow the axis direction and remove.
In order to ensure impedance matching of the main line, the support surface is provided with a plurality of through holes.
The built-in equalization circuit of the coupler optimizes the impedance matching of one path of the connecting load port, and ensures that the directivity of the coupler is not changed after the coupler is connected into the equalization circuit.
The beneficial effects are that: compared with the prior art, the coupling head can be adjusted along the radial direction of the main line of the coupler so as to achieve the required coupling degree index. The coupling is enhanced by lengthening the distance between the coupling port and the load port and increasing the size of the coupling plate, so that the coupling degree of the coupling head in the frequency range of 5.5-16.5MHz can reach 65dB without being too close to the main line.
Meanwhile, the coupling head is designed to be rectangular, the directivity index does not need to be adjusted by rotating around the axis of the coupling head, the structural space is saved, and the processing cost and the debugging difficulty are reduced. The coupling head is provided with a locking device, and the coupling head which is debugged to a proper position can be locked for normal use. The coupling head locking piece adopts a side locking mode that the jackscrew is jacked into the groove, the position change of the coupling head caused in the locking process is smaller, the debugging is more convenient when the index locking is well carried out, and the debugging efficiency is higher. The coupler has excellent radio frequency indexes such as reflection loss, insertion loss, directivity and the like.
The outer conductor cavity of the coupler main line adopts an aluminum alloy integrated processing technology, and compared with a round tube welding technology, the coupler main line outer conductor cavity has the advantages of higher processing precision, better coupler index, lower processing cost and more attractive appearance.
The built-in equalization circuit of the coupler optimizes the impedance matching of one path of the connecting load port, and ensures that the directivity of the coupler is not changed after the coupler is connected into the equalization circuit.
Drawings
Fig. 1 is a perspective view of the overall structure of a short wave broadband directional coupler;
fig. 2 is a side view of the overall structure of a short wave broadband directional coupler;
fig. 3 is a cross-sectional view of the overall structure of a short wave broadband directional coupler;
FIG. 4 is a schematic structural view of a coupling head;
in the figure, 1, an outer conductor, 2, a mounting seat, 3, a coupling head, 4, a flange, 5, an insulating support piece, 6, an inner conductor, 7, a coupling port, 8, a load port, 9, a coupling plate, 10 and a locking piece.
Detailed Description
The present utility model will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present utility model, which examples are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.
As shown in fig. 1 to 4, an outer conductor 1, a mounting base 2, a coupling head 3, a flange 4, an insulating support 5, an inner conductor 6, a coupling port 7, a load port 8, a coupling plate 9, and a locking member 10;
the utility model provides a shortwave broadband directional coupler, including outer conductor 1, inner conductor 6, a plurality of coupling heads 3, outer conductor 1 is the cavity structure, inner conductor 6 passes through supporting component and installs in outer conductor 1, coupling head 3 installs on mount pad 2, mount pad 2 installs in the outside of outer conductor 1, mount pad and outer conductor structure as an organic whole, the operating wavelength of coupling head 3 is the shortwave, be equipped with the structure that increases the coupling degree on the coupling head 3, supporting component includes a plurality of flanges 4 and insulating support piece 5, flange 4 is fixed in the port department at outer conductor 1 both ends, insulating support piece 5 is embedded in flange 4, insulating support piece 5 center department is equipped with the through-hole that is used for wearing to establish inner conductor 6, the support piece surface is equipped with a plurality of through-holes;
specifically, the main structure of the short wave (5.5-16.5 MHz) broadband directional coupler comprises a main line cavity (i.e. a main line outer conductor 1 structure, two ends of which are provided with non-standard flange 4 openings), an inner conductor 6 (which is divided into three sections, two ends of which are integrated with a flange 4 insert core), a movable part of a coupling head 3 (an inner and outer conductor 1 structure comprising a coupling opening and a load opening), and a locking part 10 of the coupling head 3 (a fixing device of the movable part of the coupling head 3).
The conductor structures all comprise an inner conductor 6 and an outer conductor 1, wherein the inner conductor 6 is arranged in the outer conductor 1, and an insulating support 5 made of polytetrafluoroethylene is arranged between the outer conductor 1 and the inner conductor 6. The outer conductor 1 is structurally provided with an input port and an output port which are non-standard flange 4 interfaces. The number of the insulating support pieces 5 in the conductor structure is two, the insulating support pieces 5 are respectively positioned at the positions of the insertion cores of the flanges 4 at the interfaces of the flanges 4 at the two ends, through holes are formed in the middle positions of the insulating support pieces 5 and the periphery of the insulating support pieces, the insulating support pieces 5 are embedded in the main line outer conductor 1, and the inner conductor 6 is embedded in the through holes in the middle positions of the insulating support pieces 5, so that the coaxiality of the inner conductor 1 and the outer conductor 1 is ensured, and the inner conductor 6 can be ensured not to move along the axial direction.
In this embodiment, the coupling head 3 includes a casing, the casing is a cuboid, there are coupling ports 7 and load ports 8 on the casing, there are predetermined distances between the coupling ports 7 and the load ports 8, there are conductors in the coupling ports 7 and the load ports 8, two conductors are connected through the coupling plate 9 of the predetermined size, there are radial regulating mechanisms on the coupling head 3, the radial regulating mechanism is used for controlling the coupling head 3 to regulate radially along the structure of the outer conductor 1, there are locking pieces 10 used for fixed coupling head 3 on the mount pad 2, the locking piece 10 is used for locking the coupling head 3 after adjusting, the upper end face of the locking piece 10 has grooves matched with coupling head 3 casing, the coupling head 3 is inlaid in the groove, there are multiple through holes on the side of the locking piece 10, there are grooves opposite to through hole on the side of the coupling head 3 casing, wear to have the same jackscrew in groove and through hole;
specifically, the coupling heads 3 are 4 pieces (each having a coupling port 7 and a load port 8) and are uniformly distributed around the axis of the outer conductor 1 at equal intervals, and the included angle between two adjacent coupling heads is 90 degrees, wherein two coupling heads are used for forward monitoring, and the other two coupling heads are used for reverse monitoring. Each coupling port 7 can take out a part of power signals from the main line channel for detection and monitoring, and the load port 8 of the directional coupler is used for connecting a matched load, and the matched load is externally connected through an interface;
by lengthening the distance between the coupling port 7 and the load port 8 and increasing the size of the coupling plate 9, the coupling is enhanced, and the coupling degree of the coupling head 3 in the frequency range of 5.5-16.5MHz can reach 65dB in a proper movable range. Meanwhile, due to the change of the structural dimensions of the coupling head 3 and the coupling plate 9, the coupling head 3 does not need to rotate around the axis of the coupling head to adjust the directivity index, so that a rotating mechanism of the coupling head 3 is eliminated, the coupling head 3 is designed into a rectangle, the space is saved, and the processing cost and the debugging difficulty are reduced. The structure is simplified and excellent radio frequency indexes (such as reflection loss, insertion loss, directivity and the like) are also provided.
The coupling part is a coupling strip line structure, the inner conductor 6 structures of the coupling port 7 and the load port 8 are connected through a coupling plate 9, and the coupling plate 9 is provided with a polytetrafluoroethylene support piece for fixing the coupling strip line structure. In order to achieve the required coupling degree index, the forward coupling head 3 and the reverse coupling head 3 are respectively provided with a radial adjusting mechanism, and the radial adjusting mechanisms are used for controlling the radial adjustment of the forward coupling head 3 and the reverse coupling head 3 along the main line conductor structure. In order to lock the coupling head 3 which is debugged to a proper position, the forward coupling head 3 and the reverse coupling head 3 are provided with locking devices which are used for locking and fixing the positions of the forward coupling head 3 and the reverse coupling head 3.
The locking mode of the locking piece 10 of the coupling head 3 is changed from the traditional compression ring structure into a side locking mode that jackscrews jack into grooves, the position change of the coupling head 3 caused in the locking process is smaller, the debugging is more convenient when the index locking is well carried out, and the debugging efficiency is higher.
In this embodiment, the outer conductor 1 adopts an aluminum alloy integrated processing technology, specifically, compared with a round tube welding technology, the processing precision is higher, the coupler index is better, the processing cost is lower, and the appearance is more attractive.
The built-in equalization circuit of the coupler optimizes the impedance matching of one path of the connecting load port, and ensures that the directivity of the coupler is not changed after the coupler is connected into the equalization circuit.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a shortwave broadband directional coupler, its characterized in that includes outer conductor, inner conductor, a plurality of coupling head, the outer conductor be cavity structure, the inner conductor pass through supporting component and install in the outer conductor, the coupling head install on the mount pad, the mount pad install in the outside of outer conductor, the operating wavelength of coupling head be the shortwave, the coupling head on be equipped with the structure that increases the coupling degree.
2. The short wave broadband directional coupler according to claim 1, wherein the coupling head comprises a casing, the casing is a cuboid, a coupling port and a load port are arranged on the casing, a predetermined distance is arranged between the coupling port and the load port, conductors are arranged in the coupling port and the load port, and the two conductors are connected through a coupling plate with a predetermined size.
3. The short wave broadband directional coupler according to claim 2, wherein the coupling head is provided with a radial adjustment mechanism for controlling the radial adjustment of the coupling head along the outer conductor structure.
4. The short-wave broadband directional coupler according to claim 3, wherein the mounting seat is provided with a locking piece for a fixed coupling head, the locking piece is used for locking the coupling head after adjustment, the upper end face of the locking piece is provided with a groove matched with a coupling head shell, the coupling head is embedded in the groove, the side of the locking piece is provided with a plurality of through holes, the side of the coupling head shell is provided with a groove opposite to the through holes, and the groove and the through holes are internally provided with the same jackscrew in a penetrating manner.
5. The short wave broadband directional coupler according to claim 1, wherein the outer conductor is integrally processed with aluminum alloy.
6. The short-wave broadband directional coupler according to claim 1, wherein the support assembly comprises a plurality of flanges and insulating support members, the flanges are fixed at ports at two ends of the outer conductor, the insulating support members are embedded in the flanges, and a through hole for penetrating the inner conductor is formed in the center of the insulating support members.
7. The short wave broadband directional coupler according to claim 6, wherein the insulating support member has a plurality of through holes formed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321840147.2U CN220585478U (en) | 2023-07-13 | 2023-07-13 | Short wave broadband directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321840147.2U CN220585478U (en) | 2023-07-13 | 2023-07-13 | Short wave broadband directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220585478U true CN220585478U (en) | 2024-03-12 |
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ID=90113059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321840147.2U Active CN220585478U (en) | 2023-07-13 | 2023-07-13 | Short wave broadband directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220585478U (en) |
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2023
- 2023-07-13 CN CN202321840147.2U patent/CN220585478U/en active Active
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