CN109004322B - Small-size high-power bent coupler in severe environment - Google Patents
Small-size high-power bent coupler in severe environment Download PDFInfo
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- CN109004322B CN109004322B CN201810743226.9A CN201810743226A CN109004322B CN 109004322 B CN109004322 B CN 109004322B CN 201810743226 A CN201810743226 A CN 201810743226A CN 109004322 B CN109004322 B CN 109004322B
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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 small-volume high-power bent coupler in a harsh environment, which comprises a coupling plug-in outer conductor, wherein the right end of the coupling plug-in outer conductor is connected with a main outer conductor, the right end of the main outer conductor is connected with an interface end outer conductor, the left end center and the right end center of the coupling plug-in outer conductor are respectively provided with a coupling end inner conductor through a coupling end insulator, a microstrip end supporting insulator is used for supporting the microstrip end inner conductor, the bottom end of the microstrip end inner conductor is connected with a contact block, the main inner conductor is internally inserted into the main outer conductor, an inner tooth gasket, a nut and a sealing ring are sleeved on the interface end outer conductor, the interface end insulator is internally installed in the interface end outer conductor, the coupler has high installation speed, a connecting sleeve improves the structural strength of the coupler, the outer diameter size of the inner conductor is positioned to be 2.5mm according to thermal simulation software, the power resistance capability of the coupler is high, and the installation efficiency and the transmission efficiency of the inner conductor are high.
Description
Technical Field
The invention relates to the field of couplers, in particular to a small-volume high-power bent coupler in a severe environment.
Background
In microwave systems, it is often necessary to divide a microwave power path into several paths in proportion, which is a problem of power distribution. The elements that achieve this function are called power distribution components, i.e. couplers, and mainly comprise: directional couplers, power splitters and various microwave branching devices.
The coupler is a radio frequency device which extracts a small part of signals from a wireless signal main channel, and the coupler belongs to a power distribution device like a power divider, except that the coupler is a non-equal power distribution device. The coupler is matched with the power divider for use, and the transmitting power of each antenna port is basically the same in order to achieve a goal that the transmitting power of the signal source can be distributed to each antenna port of the indoor distribution system as evenly as possible.
At present, the high-power connector is used more under the missile-borne environment (high temperature and low air pressure), the requirement on power is higher, the running state of the whole system is generally monitored under the missile-borne environment, and the coupler becomes a preferred product under the environment.
However, all the existing couplers on the market adopt a radio frequency connector and a micro circuit board mode, the input and output ends are standard interface ports of an N-type connector, the use frequency of the coupler is generally below 6GHz, the coupling degree is 30dB at the highest, the most important is that the power resistance is very poor, the power resistance is generally only a few watts to tens of watts, the market demand cannot be met at all, the existing coupler is complex in structure, and the mounting speed is low.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the small-size high-power bent coupler under a severe environment, which has the advantages of high installation speed, low installation difficulty, improved structural strength of the coupler due to the connecting sleeve, difficult burnout of the coupler, prolonged service life of the coupler, reasonable positioning of the outer diameter size of the inner conductor to be 2.5mm according to thermal simulation software, improved power resistance of the coupler, improved installation efficiency and installation accuracy of the inner conductor due to the connection mode of first thread engagement and then high-temperature soldering tin between the two inner conductors, improved transmission efficiency between the inner conductors, reduced power loss and heat productivity of the connecting part of the inner conductor, prolonged service life of the inner conductor, and capability of effectively solving the problems raised by the background technology.
The small-volume high-power bent coupler comprises a coupling plug-in outer conductor, wherein the right end of the coupling plug-in outer conductor is connected with a main outer conductor, a coupling end insulator is arranged at the left end center of the coupling plug-in outer conductor through a column groove, a microstrip end inner conductor is supported at the right end center of the coupling plug-in outer conductor through a microstrip end supporting insulator, a coupling end inner conductor is inserted in the coupling end insulator, the tail end of the microstrip end inner conductor is connected with a contact block, and the bottom side of the contact block extending out of the coupling plug-in outer conductor is connected with a contact head;
the right end of the main outer conductor is connected with an interface end outer conductor, a main inner conductor is inserted in the main outer conductor, an internal tooth gasket and a nut positioned on the left side of the internal tooth gasket are sleeved on the outer side of the interface end outer conductor, a sealing ring is further installed on the outer side of the left end of the interface end outer conductor, and an interface end insulator is installed inside the right end of the interface end outer conductor.
Further, the right end of the bottom side of the coupling plug-in outer conductor is provided with a plug-in groove, and the left end of the main outer conductor is connected with a plug-in piece matched with the plug-in groove.
Further, a groove is formed in the left side of the top surface of the outer conductor at the interface end, an elastic protruding block matched with the groove is arranged at the bottom end of the main outer conductor, pin grooves are formed in the elastic protruding block and the outer conductor at the interface end, and a fixed pin shaft is inserted into the pin grooves.
Further, the main inner conductor and the microstrip end inner conductor are connected together in a threaded engagement mode, and a high-temperature soldering tin layer is filled in a connecting gap between the main inner conductor and the microstrip end inner conductor.
Further, the top surface of the interface terminal insulator is attached to the bottom side of the right end of the main inner conductor.
Further, the microstrip end supporting insulator, the coupling end insulator and the interface end insulator are made of polytetrafluoroethylene materials.
Further, the outer diameter sizes of the main inner conductor, the coupling end inner conductor and the microstrip end inner conductor are all the same.
Further, the front section of the microstrip end inner conductor is L-shaped, and the microstrip end inner conductor is connected with the coupling end inner conductor through the conductive connecting block.
Further, the coupling plug-in outer conductor and the main outer conductor, and the main outer conductor and the interface end outer conductor are all connected through a connecting sleeve, and an annular radiating fin is arranged on the connecting sleeve.
Further, the connecting sleeve comprises an external thread sleeve and an internal thread sleeve, the thread end of the external thread sleeve is matched with the thread end of the opposite internal thread sleeve, the two external thread sleeves are respectively arranged at the two ends of the main external conductor, and the two internal thread sleeves are respectively arranged at the right end of the coupling plug-in external conductor and the left end of the interface end external conductor.
(1) The main outer conductor and the coupling plug outer conductor are connected together by adopting a plug structure, and the elastic protruding blocks are easily inserted into the grooves to complete the connection of the two outer conductors, so that the attaching speed of the coupler is greatly improved;
(2) The connecting sleeve of the invention adopts a threaded engagement mode to more firmly connect two adjacent outer conductors, the connecting sleeve has high installation speed, and the connecting strength between the two adjacent outer conductors is reinforced, and the connecting sleeve absorbs the external force when the coupler is subjected to the external force, so that the connection between the outer conductor and the main outer conductor and the connection between the main outer conductor and the interface end outer conductor are not easily disconnected, and the connecting piece is not damaged, thereby improving the structural strength of the coupler, improving the working stability of the coupler, and the annular radiating fin also has the auxiliary radiating effect, thereby ensuring that the coupler works more safely, ensuring that the coupler is not easy to burn out, and prolonging the service life of the coupler;
(3) According to the invention, the outer diameter of the inner conductor is reasonably positioned to be 2.5mm according to the thermal simulation software, and the outer diameter of the inner conductor of 2.5mm is larger than the inner conductor diameter of the standard TNCA, so that the inner conductor can transmit larger current and output larger power, and the power resistance of the coupler is improved;
(4) The connection mode of the first thread engagement and the second high-temperature soldering tin between the two inner conductors not only improves the attachment efficiency and the attachment accuracy of the inner conductors, but also improves the transmission efficiency between the inner conductors, reduces the power loss and the heating value of the connection part of the inner conductors, and prolongs the service life of the inner conductors;
(5) The insulators are made of polytetrafluoroethylene materials, so that the insulators are high in stability, the insulators can not be corroded or aged in high temperature, frost and other severe environments, the inner cavity of the coupler is kept sealed by the design of the sealing ring, the inner conductor is protected from being corroded, the position of the inner conductor is not changed, and the working stability of the coupler is improved.
Drawings
FIG. 1 is a schematic view of the front semi-section structure of the present invention;
fig. 2 is a schematic top view of the present invention.
1-coupling the plug outer conductor; 2-a main outer conductor; 3-an interface end outer conductor; 4-microstrip end inner conductors; 5-a coupling end inner conductor; 6-a main inner conductor; 7-an electrically conductive connection block; 8-connecting sleeves;
11-column grooves; 12-microstrip end supporting insulator; 13-a plug-in groove; 14-a coupling terminal insulator;
21-a plug-in piece; 22-elastic bumps; 23-pin slots; 24-fixing the pin shaft;
31-internal tooth washers; 32-nuts; 33-sealing rings; 34-interface terminal insulator; 35-grooves;
41-contact blocks; 42-contact heads;
81-an external thread sleeve; 82-internal thread sleeve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and fig. 2, the invention provides a small-volume high-power bent coupler in a severe environment, which comprises a coupling plug outer conductor 1, wherein the coupling plug outer conductor 1 is two common outer conductors of a coupling end and a plug end, the right end of the coupling plug outer conductor 1 is connected with a main outer conductor 2, and the right end of the main outer conductor 2 is connected with an interface end outer conductor 3.
It should be noted that, the coupling plug-in outer conductor 1, the main outer conductor 2 and the interface end outer conductor 3 are also provided with cavities, and the cavities are filled with air medium, so that the total volume of the coupler is reduced, and the coupler can be used more conveniently. The coupling end and the connector cavity are directly designed into an integrated structure, so that the assembly precision is optimized and the coupling degree of the product is improved in terms of processing and assembly processes.
The right end of the bottom side of the coupling plug-in outer conductor 1 is provided with a plug-in groove 13, and the left end of the main outer conductor 2 is connected with a plug-in piece 21 matched with the plug-in groove 13. The insertion piece 21 has a "U" shape in a front cross section and can be inserted into the insertion groove 13. The left side of the top surface of the interface end outer conductor 3 is provided with a groove 35, the bottom end of the main outer conductor 2 is provided with an elastic lug 22 matched with the groove 35, the elastic lug 22 and the interface end outer conductor are respectively provided with a pin groove 23, and a fixed pin shaft 24 is inserted into the pin grooves 23.
Preferably, the main outer conductor 2 and the coupling plug outer conductor 1 are connected together by adopting a plug structure, and the main outer conductor 2 and the interface end outer conductor 3 are connected by adopting an elastic lug 22 to be easily inserted into a groove 35, so that the attaching speed of the coupler is greatly improved.
The coupling plug-in outer conductor 1 is connected with the main outer conductor 2, and the main outer conductor 2 is connected with the interface end outer conductor 3 through a connecting sleeve 8, and annular cooling fins are arranged on the connecting sleeve 8. The connecting sleeve 8 comprises an external thread sleeve 81 and an internal thread sleeve 82, the thread ends of the external thread sleeve 81 are matched with the thread ends of the internal thread sleeve 82 opposite to the external thread sleeve 81, the two external thread sleeves 81 are respectively arranged at the two ends of the main external conductor 2, and the two internal thread sleeves 82 are respectively arranged at the right end of the coupling plug-in external conductor 1 and the left end of the interface end external conductor 3.
Preferably, the connecting sleeve 8 adopts a threaded engagement mode to connect two adjacent outer conductors more firmly, the mounting speed is high, the connection strength between the two adjacent outer conductors is reinforced, the connecting sleeve 8 firstly bears external force when the coupler is subjected to external force, so that the connection between the outer conductor 1 and the main outer conductor 2 and the connection between the main outer conductor 2 and the interface end outer conductor 3 are not easily broken, a connecting piece is not damaged, the structural strength of the coupler is improved, the working stability of the coupler is also improved, and the annular radiating fin also has the auxiliary radiating effect, so that the coupler is safer in working, the coupler is not easy to burn out, and the service life of the coupler is prolonged.
The left end center of the coupling plug-in outer conductor 1 is provided with a coupling end insulator 14 through a column groove 11, a coupling end inner conductor 5 is inserted in the coupling end insulator 14, the left end of the coupling end inner conductor 5 is connected with a connector, namely the coupling end of the coupler, the connector adopts an SMA type connector interface in a label, and the testing and the data monitoring of the coupler are facilitated.
The right end center of the coupling plug outer conductor 1 is supported with a microstrip end inner conductor 4 through a microstrip end support insulator 12, the tail end of the microstrip end inner conductor 4 is connected with a contact block 41, the bottom side of the contact block 41 extending out of the coupling plug outer conductor 1 is connected with a contact head 42, and the contact head 42 extending out of the bottom side of the coupling plug outer conductor 1 is convenient for contacting with external circuit elements, so that the distribution and transmission of power are more efficient.
The main inner conductor 6 is inserted into the main outer conductor 2, an internal tooth gasket 31 and a nut 32 positioned on the left side of the internal tooth gasket 31 are sleeved on the outer side of the interface end outer conductor 3, a sealing ring 33 is further installed on the outer side of the left end of the interface end outer conductor 3, and an interface end insulator 34 is installed inside the right end of the interface end outer conductor 3. The seal ring 33 and the internal tooth washer 31 can improve the sealing property of the connection between the main outer conductor 2 and the interface end outer conductor 3, so that the inside of the cavity is kept sealed, and the inner conductor is not easily corroded by the outside.
The main inner conductor 6 and the microstrip end inner conductor 4 are connected together in a threaded engagement mode, so that the two inner conductors are conveniently connected, the connecting speed of the inner conductors is improved, and a high-temperature soldering tin layer is filled in a connecting gap between the main inner conductor 6 and the microstrip end inner conductor 4. After the two inner conductors are connected together in a threaded engagement mode, the two inner conductors are in accurate butt joint, so that errors caused by manual fixed connection and then welding of the inner conductors are avoided. The high-temperature welding is performed on the threaded gap between the two inner conductors by using the soldering gun, so that the gap area between the two inner conductors is reduced, the contact area is increased, and the problems of low transmission efficiency, serious heating and the like caused by overlarge connecting gaps between the inner conductors are avoided.
Therefore, the connection mode of the first thread engagement and then high-temperature soldering tin between the two inner conductors not only improves the transmission efficiency between the inner conductors and reduces the power loss, but also reduces the heating of the inner conductors and prolongs the service life of the inner conductors.
The microstrip end inner conductor 4 is L-shaped in positive section, and the microstrip end inner conductor 4 is positioned between the main inner conductor 6 and the coupling end inner conductor 5, so that the microstrip end inner conductor can not only play a role in transmitting signals, but also play a role in outputting signals. And the microstrip end inner conductor 4 is connected with the coupling end inner conductor 5 through the conductive connecting block 7, and the three inner conductors can mutually transmit electric signals such as current, power and the like.
The outer diameter sizes of the main inner conductor 6, the coupling end inner conductor 5 and the micro-strip end inner conductor 4 are all 2.5mm, the size of 2.5mm is obtained by calculation and simulation according to thermal simulation software, and the outer diameter size of the inner conductor of 2.5mm is larger than the inner conductor diameter of a standard TNCA, so that the inner conductor can transmit larger current and output larger power, and the power resistance of the coupler is improved.
The top surface of the interface terminal insulator 34 is attached to the bottom side of the right end of the main inner conductor 6, and the functions of the interface terminal insulator 34 and the microstrip terminal support insulator 12 are the same, and are all used for supporting the inner conductor, so that the inner conductor is more stably fixed.
The microstrip end supporting insulator 12, the coupling end insulator 14 and the interface end insulator 34 are all made of polytetrafluoroethylene materials, and the insulator made of polytetrafluoroethylene materials has the advantages of high temperature resistance, low temperature resistance, corrosion resistance, weather resistance, no toxicity, good electrical insulation and the like, so that various insulators in the coupler cannot be melted or deformed due to high temperature, cannot be broken due to low temperature, has strong ageing resistance, can stably support various inner conductors for a long time, ensures the position of the inner conductors, ensures the stable working performance of the coupler, and enables the coupler to work stably in a severe environment.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a little volume high-power curved coupler under harsh environment, includes coupling grafting outer conductor (1), its characterized in that: the right end of the coupling plug-in outer conductor (1) is connected with a main outer conductor (2), a coupling end insulator (14) is arranged at the left end center of the coupling plug-in outer conductor (1) through a column groove (11), a microstrip end inner conductor (4) is supported at the right end center of the coupling plug-in outer conductor (1) through a microstrip end supporting insulator (12), a coupling end inner conductor (5) is inserted in the coupling end insulator (14), a contact block (41) is connected at the tail end of the microstrip end inner conductor (4), a contact head (42) is connected at the bottom side of the contact block (41) extending out of the coupling plug-in outer conductor (1), the front section of the microstrip end inner conductor (4) is L-shaped, the microstrip end inner conductor (4) is connected with the coupling end inner conductor (5) through a conductive connecting block (7), and the conductive connecting block (7) is connected with a bent part of the microstrip end inner conductor (4);
the right end of the main outer conductor (2) is connected with an interface end outer conductor (3), a main inner conductor (6) is inserted into the main outer conductor (2), an inner tooth gasket (31) and a nut (32) positioned on the left side of the inner tooth gasket (31) are sleeved on the outer side of the interface end outer conductor (3), a sealing ring (33) is further arranged on the outer side of the left end of the interface end outer conductor (3), and an interface end insulator (34) is arranged in the right end of the interface end outer conductor (3);
the main inner conductor (6) and the microstrip end inner conductor (4) are connected together in a threaded engagement mode, and a high-temperature soldering tin layer is filled in a connecting gap between the main inner conductor (6) and the microstrip end inner conductor (4).
2. A low volume, high power curved coupler according to claim 1, wherein: the right end of the bottom side of the coupling plug-in outer conductor (1) is provided with a plug-in groove (13), and the left end of the main outer conductor (2) is connected with a plug-in piece (21) matched with the plug-in groove (13).
3. A low volume, high power curved coupler according to claim 1, wherein: the interface end outer conductor (3) top surface left side is equipped with recess (35), the bottom of main outer conductor (2) is provided with elasticity lug (22) with recess (35) assorted, all be equipped with on elasticity lug (22) and the interface end outer conductor cotter way (23), cotter way (23) interpolation is equipped with fixed round pin axle (24).
4. A low volume, high power curved coupler according to claim 1, wherein: the top surface of the interface terminal insulator (34) is attached to the bottom side of the right end of the main inner conductor (6).
5. A low volume, high power curved coupler according to claim 1, wherein: the microstrip end supporting insulator (12), the coupling end insulator (14) and the interface end insulator (34) are all made of polytetrafluoroethylene materials.
6. A low volume, high power curved coupler according to claim 1, wherein: the outer diameter sizes of the main inner conductor (6), the coupling end inner conductor (5) and the microstrip end inner conductor (4) are all 2.5mm.
7. A low volume, high power curved coupler according to claim 1, wherein: the coupling plug-in outer conductor (1) is connected with the main outer conductor (2) and the main outer conductor (2) is connected with the interface end outer conductor (3) through the connecting sleeve (8), and the connecting sleeve (8) is provided with an annular radiating fin.
8. The low volume, high power curved coupler according to claim 7, wherein: the connecting sleeve (8) comprises an external thread sleeve (81) and an internal thread sleeve (82), the thread end of the external thread sleeve (81) is matched with the thread end of the opposite internal thread sleeve (82), the two external thread sleeves (81) are respectively arranged at the two ends of the main external conductor (2), and the two internal thread sleeves (82) are respectively arranged at the right end of the coupling plug-in external conductor (1) and the left end of the interface end external conductor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810743226.9A CN109004322B (en) | 2018-07-09 | 2018-07-09 | Small-size high-power bent coupler in severe environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810743226.9A CN109004322B (en) | 2018-07-09 | 2018-07-09 | Small-size high-power bent coupler in severe environment |
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| Publication Number | Publication Date |
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| CN109004322A CN109004322A (en) | 2018-12-14 |
| CN109004322B true CN109004322B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810743226.9A Active CN109004322B (en) | 2018-07-09 | 2018-07-09 | Small-size high-power bent coupler in severe environment |
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| US5986519A (en) * | 1995-04-03 | 1999-11-16 | Kellett; Colin John | Coaxial cable transition arrangement |
| CN203013911U (en) * | 2012-08-21 | 2013-06-19 | 北京飞卡科技有限公司 | Directional coupling device for coupling forward-and-reverse RF signal |
| CN104103884A (en) * | 2014-07-14 | 2014-10-15 | 常州普纳电子科技有限公司 | Adjustable sealed coupler |
| CN106356603A (en) * | 2016-11-02 | 2017-01-25 | 谈振新 | Broadband probe coaxial coupler |
Family Cites Families (3)
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| US7429903B2 (en) * | 2006-03-24 | 2008-09-30 | R&D Microwaves Llc | Dual directional coupler with multi-stepped forward and reverse coupling rods |
| DE102010009227A1 (en) * | 2009-12-23 | 2011-06-30 | Rohde & Schwarz GmbH & Co. KG, 81671 | Breitbandrichtkoppler |
| DE102011108316A1 (en) * | 2011-07-22 | 2013-01-24 | Kathrein-Werke Kg | RF power divider |
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2018
- 2018-07-09 CN CN201810743226.9A patent/CN109004322B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986519A (en) * | 1995-04-03 | 1999-11-16 | Kellett; Colin John | Coaxial cable transition arrangement |
| CN203013911U (en) * | 2012-08-21 | 2013-06-19 | 北京飞卡科技有限公司 | Directional coupling device for coupling forward-and-reverse RF signal |
| CN104103884A (en) * | 2014-07-14 | 2014-10-15 | 常州普纳电子科技有限公司 | Adjustable sealed coupler |
| CN106356603A (en) * | 2016-11-02 | 2017-01-25 | 谈振新 | Broadband probe coaxial coupler |
Non-Patent Citations (1)
| Title |
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| 孙乎浩 ; 陈澄 ; 王成 ; .微波组件同轴-微带连接转换工艺研究.电子工艺技术.2017,(第05期),全文. * |
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