CN116914398A - Miniaturized high directivity coupler - Google Patents
Miniaturized high directivity coupler Download PDFInfo
- Publication number
- CN116914398A CN116914398A CN202311009865.XA CN202311009865A CN116914398A CN 116914398 A CN116914398 A CN 116914398A CN 202311009865 A CN202311009865 A CN 202311009865A CN 116914398 A CN116914398 A CN 116914398A
- Authority
- CN
- China
- Prior art keywords
- cavity
- inner conductor
- directional coupler
- port
- coupler according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 92
- 230000008878 coupling Effects 0.000 claims abstract description 32
- 238000010168 coupling process Methods 0.000 claims abstract description 32
- 238000005859 coupling reaction Methods 0.000 claims abstract description 32
- 239000000523 sample Substances 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 11
- 238000000605 extraction Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
Abstract
The invention discloses a miniaturized high-directivity coupler, belonging to the technical field of microwave communication; the device comprises a cavity main body structure formed by connecting an upper cavity, a middle cavity and a lower cavity, wherein a first inner conductor and a second inner conductor are arranged in the cavity main body structure; the first inner conductor is horizontally arranged in the middle cavity and used as a main circuit, a similar coaxial closed cavity is formed among the first inner conductor, the upper cavity, the middle cavity and the lower cavity, and the outer parts of two ends of the first inner conductor are respectively connected with an input port and an output port; the second inner conductor consists of a parallel section and two connecting sections which are vertically connected with the parallel section, and the ends of the two connecting sections which are positioned in the upper cavity and the lower cavity and correspond to each other diagonally are respectively connected with a forward coupling port and a reverse coupling port, and the ends of the other two connecting sections are connected with a matching load. The coupler can realize effective extraction of forward and reverse signals, and can quickly and accurately judge reflection faults so as to meet the requirements of miniaturization and reliability of ground measurement and control communication equipment.
Description
Technical Field
The invention belongs to the technical field of microwave communication, and particularly relates to a miniaturized high-directivity coupler.
Background
With the rapid development of the related technology of microwave communication, the demand for various microwave power devices is increasing. The coupler is used as a key device of a system for measuring and controlling communication, radar, satellite communication and the like, and the performances of volume, reliability, stability and the like are vital to the system.
However, the design of the coupler for realizing high directivity miniaturization of the positive and negative signal extraction is difficult, and particularly for microwave power equipment, in order to avoid the covering of the reverse power by the forward power, the reflected power level is accurately extracted, and higher requirements are put forward on the high directivity of the coupler. Therefore, the design of the miniaturized high-directivity coupler with excellent performance and convenient integration has important significance for the development of the fields of aerospace measurement and control, radar, satellite communication and the like in the future.
Disclosure of Invention
The purpose of the invention is that: the problems existing in the prior art are overcome, and the high-directivity coupler with small structure, stable work and excellent performance is provided, so that the effective extraction of forward and reverse signals can be realized, and the reflection fault judgment can be quickly and accurately made, thereby meeting the requirements of miniaturization and reliability of ground measurement and control communication equipment.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a miniaturized high-directivity coupler comprises a cavity main body structure formed by connecting an upper cavity, a middle cavity and a lower cavity, and a first inner conductor arranged in the middle cavity and a second inner conductor arranged in the upper cavity and the lower cavity;
the middle part of the middle cavity is provided with a cavity structure penetrating up and down, the side surface of the middle cavity is provided with a connecting hole communicated with the cavity structure, the structures of the upper cavity and the lower cavity are the same and are symmetrically arranged on the upper end surface and the lower end surface of the middle cavity, the inner end surfaces of the upper cavity and the lower cavity are respectively provided with a cavity groove corresponding to the cavity structure, the inner end surfaces of the cavity grooves are provided with a plurality of non-equidistant cylindrical bosses, and the inner end surfaces of the cavity grooves positioned on the two sides of the cylindrical bosses are also provided with mounting holes;
the first inner conductor is horizontally arranged in the cavity structure and used as a main circuit, a similar coaxial closed cavity is formed among the first inner conductor, the upper cavity, the middle cavity and the lower cavity, two ends of the first inner conductor are connected in the connecting hole in a matched mode, and the outer parts of the two ends of the first inner conductor are respectively connected with the input port and the output port;
the second inner conductor consists of a parallel section which is parallel to the first inner conductor and arranged in the cavity groove, and two connecting sections which are vertically connected to two ends of the parallel section, wherein the parallel section is used as a branch circuit for coupling a main circuit magnetic field, the branch circuit is in contact connection with the cylindrical boss, the two connecting sections are both connected in the mounting hole in a matched mode, the ends of the two connecting sections which are positioned in the upper cavity and the lower cavity and correspond to each other diagonally are respectively connected with a forward coupling port and a reverse coupling port, and the ends of the other two connecting sections are both connected with a matched load.
The first inner conductor is a cylindrical metal conductor with gold-plated surface, the radius of two ends of the first inner conductor is smaller than that of the middle part, and the two ends of the first inner conductor are connected with an N-type connector through direct insertion.
The N-type connector comprises a first inner conductor and a second inner conductor, wherein an insulating medium is arranged in the axial middle of the N-type connector, a hollow N-type connector inner conductor is arranged in the middle of the insulating medium, the inner diameter of the N-type connector inner conductor is the same as the outer diameter of the two ends of the first inner conductor, and the N-type connector inner conductor and the first inner conductor are connected and fixed in a direct insertion mode.
The inner end face of the N-type connector, the side end faces of the upper cavity and the lower cavity are respectively provided with a first threaded hole, and the N-type connector is fixedly connected to the upper cavity and the lower cavity through the matching of bolts and the first threaded holes.
And the ends of the two connecting sections of the second inner conductor are sleeved with hollow cylindrical polytetrafluoroethylene medium blocks, and the hollow cylindrical polytetrafluoroethylene medium blocks are fixed on the middle cavity through interference fit between the polytetrafluoroethylene medium blocks and the connecting holes.
The two connecting section ends of the second inner conductor are provided with probes, and the end of each connecting section is directly connected with an SMA connector through the probes.
The axial middle part of the SMA connector is provided with a hollow SMA connector inner conductor, the inner diameter of the SMA connector inner conductor is the same as the diameter of the probe on the second inner conductor, and the inner diameter of the SMA connector inner conductor and the diameter of the probe on the second inner conductor are connected and fixed in a direct insertion mode.
The inner end face of the SMA connector, the outer end faces of the upper cavity and the lower cavity are respectively provided with a second threaded hole, and the SMA connector is fixedly connected to the upper cavity or the lower cavity through the matching of bolts and the second threaded holes.
The upper cavity and the lower cavity are respectively fixedly connected to the middle cavity through the matching connection of the screws and the cavity installation through holes and the threaded counter bores.
The cavity structure and the cavity groove are rectangular cross-section structures with the same size, the number of the cylindrical bosses in the cavity groove is four, and the four cylindrical bosses are equivalent to the grounded parallel capacitor by adjusting the equivalent capacitance value and the spacing.
The beneficial effects of the invention are as follows:
1) The high-directivity coupler has the advantages of small structure, stable operation and excellent performance, can effectively extract forward and reverse signals, and can quickly and accurately judge reflection faults so as to meet the requirements of miniaturization and reliability of ground measurement and control communication equipment.
2) The high-directivity coupler has a compact overall structure, and is convenient to integrate because the length, width and height are only 35mmx26mmx26 mm; the directivity is high, the index is better than more than 35dB, and the small reflected signals can be accurately extracted; the structure of the irregular coaxial cavity is adopted to realize the extraction of broadband weak coupling signals, and the method is suitable for various frequency bands and broadband use.
3) The inner conductor and the connector are connected by adopting a direct-insertion structure, so that the interference of signal transmission discontinuity introduced by welding on small signal extraction is avoided; the non-equidistant grounding cylindrical parallel structure is adopted, periodic reflection is formed on the coupled signals, the signal level output difference of different ports of the same inner conductor is increased, and the high directivity of the coupler is greatly improved.
4) The invention adopts a parallel coupling structure of two back-to-back inner conductors, thereby reducing the whole volume of the coupler; and the whole structure is simple, the external standard interface is adopted, the installation is convenient, and the device is very suitable for being applied to the application field of high-power miniaturized microwave communication equipment.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic view of the upper end surface of the upper chamber in FIG. 1;
FIG. 4 is a schematic view of the lower end surface of the upper chamber in FIG. 1;
FIG. 5 is a schematic view of the middle chamber of FIG. 1;
FIG. 6 is a schematic diagram of the N-type connector of FIG. 1;
FIG. 7 is a schematic illustration of the structure of the SMA connector of FIG. 1;
FIG. 8 is a schematic diagram of the coupler double branch equivalent electrical schematic of the present invention;
fig. 9 is a diagram of simulation results of a coupler according to the present invention.
In the figure, the structure of the cavity comprises a 1-upper cavity, a 2-middle cavity, a 201-cavity structure, a 202-connecting hole, a 3-lower cavity, a 4-N type connector, a 401-insulating medium, a 402-N type connector inner conductor, a 5-SMA connector, a 6-first inner conductor, a 7-second inner conductor, an 8-cavity groove, a 9-cylindrical boss, a 10-mounting hole, a 11-first threaded hole, a 12-polytetrafluoroethylene medium block, a 13-probe, a 14-second threaded hole, a 15-cavity mounting through hole and a 16-threaded counter bore.
Detailed Description
The invention is further illustrated by the following description in conjunction with the accompanying drawings and specific embodiments.
Examples: as shown in fig. 1 to 9, the present invention provides a miniaturized high directivity coupler, comprising a cavity main body structure formed by connecting an upper cavity 1, a middle cavity 2 and a lower cavity 3, and a first inner conductor 6 connected inside the middle cavity 2, and a second inner conductor 7 connected inside the upper cavity 1 and the lower cavity 3; two cavity installation through holes 15 are formed in the outer end faces of the upper cavity 1 and the lower cavity 3, two threaded counter bores 16 are formed in the upper end face and the lower end face of the middle cavity 2, which correspond to the cavity installation through holes 15, respectively, and the upper cavity 1 and the lower cavity 3 are fixedly connected to the upper end face and the lower end face of the middle cavity 2 through screw fit connection in the cavity installation through holes 15 and the threaded counter bores 16, respectively.
The middle part of the middle cavity 2 is provided with a cavity structure 201 penetrating up and down, and two side surfaces of the middle cavity 2 are provided with connecting holes 202 communicated with the cavity structure 201; the first inner conductor 6 is horizontally installed in the cavity structure 201 as a main circuit, two ends of the first inner conductor 6 are connected in the connecting hole 202 in a matching way, a similar coaxial closed cavity is formed among the first inner conductor 6, the upper cavity 1, the middle cavity 2 and the lower cavity 3, high-power microwave signals are transmitted, and the outer parts of the two ends of the first inner conductor are respectively connected with an input port and an output port.
The first inner conductor 6 is a metal conductor with a cylindrical surface plated with gold, and the radius of the two ends is smaller than that of the middle part, so that the insertion depth can be conveniently controlled when the first inner conductor is connected with the N-type connector, and meanwhile, the inner conductor can be prevented from falling off, and the two ends are connected with the N-type connector 4 through direct insertion.
The axial middle part of N type connector 4 is connected with insulating medium 401, and insulating medium 401's middle part cooperation has hollow N type connector inner conductor 402, and N type connector inner conductor 402's internal diameter is the same with the both ends external diameter of first inner conductor 6, is convenient for install with first inner conductor 6 cut straightly, and both are connected fixedly through cut straightly, and insulating medium 401 supports the inner conductor on the one hand, can make inside and outside conductor insulating on the one hand, and coupling overall structure is compact, and is small and exquisite, has advantages such as bearing power is big, direction height.
Four first threaded holes 11 are formed in the inner end face of the N-type connector 4, two first threaded holes 11 are correspondingly formed in the side end faces of the upper cavity 1 and the lower cavity 3, and the N-type connector 4 is fixedly arranged on the upper cavity 1 and the lower cavity 3 through the matching connection of bolts and the first threaded holes 11.
The upper cavity 1 and the lower cavity 3 are identical in structure and symmetrically fixed on the upper end face and the lower end face of the middle cavity 2, the inner end faces of the upper cavity 1 and the lower cavity 3 are respectively provided with a cavity groove 8 corresponding to the cavity structure 201, the cavity structure 201 and the cavity grooves 8 are rectangular cross-section structures with the same size, the inner end faces of the cavity grooves 8 are provided with four non-equidistant cylindrical bosses 9, the four cylindrical bosses 9 are equivalent to a grounded parallel capacitor by adjusting equivalent capacitance and spacing, signals transmitted along the second inner conductor 7 can be interfered, and the transmission signals of the second inner conductor 7 are selectively output by different SMA ports through periodical reflection of a boss; two mounting holes 10 are also formed in the inner end faces of the cavity grooves 8 on two sides of the four cylindrical bosses 9.
The second inner conductor 7 consists of a parallel section parallel to the first inner conductor 6 and arranged in the cavity groove 8 and two connecting sections vertically connected to two ends of the parallel section, the second inner conductor 7 is used for conducting magnetic field coupling through the parallel section which is arranged in parallel with the first inner conductor 6, weak signals are induced to the second inner conductor 7, and weak signal extraction of the signals transmitted by the first inner conductor 6 is achieved on the premise that large signal transmission is not affected.
The parallel section is used as a branch circuit for coupling the magnetic field of the main circuit and is in contact connection with the cylindrical boss 9, the two connecting sections are both connected in the two mounting holes 10 in a matched mode, the end parts of the two connecting sections which are positioned in the upper cavity 1 and the lower cavity 3 and correspond to the opposite angles are respectively connected with a forward coupling port and a reverse coupling port, and the end parts of the other two connecting sections are both connected with matched loads.
The ends of the two connecting sections of the second inner conductor 7 are sleeved with hollow cylindrical polytetrafluoroethylene medium blocks 12, the polytetrafluoroethylene medium blocks 12 are fixed on the middle cavity 2 through interference fit between the polytetrafluoroethylene medium blocks 12 and the connecting holes 202, and the polytetrafluoroethylene medium blocks 12 are used for assisting in fixing the second inner conductor 7 in the main cavity of the coupler.
The ends of the two connecting sections of the second inner conductor 7 are provided with probes 13, and the end of each connecting section is in direct insertion connection with one SMA connector 5 through the probes 13.
The axial middle part of the SMA connector 5 is provided with a hollow SMA connector inner conductor 501, the inner diameter of the SMA connector inner conductor 501 is the same as the diameter of the probe 13 on the second inner conductor 7, and the inner diameter of the SMA connector inner conductor 501 and the diameter of the probe 13 are fixedly connected in a direct insertion mode.
Four second threaded holes 14 are formed in the inner end face of the SMA connector 5, the outer end faces of the upper cavity 1 and the lower cavity 3, and the SMA connector 5 is fixedly arranged on the upper cavity 1 or the lower cavity 3 through the matched connection of bolts and the second threaded holes 14.
Working principle:
the two N-type connectors 4 are large signal input or output ports respectively, no direction requirement exists, when the large signal is input by the N-type connector A1 at the left end, the N-type connector A2 at the right end is output, and when the large signal is input by the right end, the left end is output. The two N-type connectors 4 and the first inner conductor 6 are in direct insertion design, so that signal transmission discontinuity caused by welding is avoided, interference is generated on weak signals coupled with the second inner conductor 7, and the power transmission level is improved.
When signals are input by the N-type connector A1 at the left end, the SMA connector B3 at the left end of the upper part can sample the output level of the forward signal, and is a forward coupling output port, and the SMA connector B4 at the right end of the upper part is connected with a matching load, so that the stability and the accuracy of forward coupling can be improved.
The output signal of the N-type connector A2 at the right end reaches an antenna or a load or other microwave link devices, and when the microwave link at the rear end of the coupler fails, a link mismatch phenomenon is generated, so that signal reflection is caused. At this time, the SMA connector B5 at the right end of the lower part can sample the output level of the reverse signal, which is the reverse coupling output port, and the SMA connector B6 at the left end of the lower part is connected with the matching load, so that the stability and accuracy of the reverse coupling can be improved. Due to the high directivity of the coupler, the two SMA connectors 5 in the upper and lower identical groups have a high recognition capability for the input signals from the two N-type connectors 4.
As shown in fig. 8, a coupler double branch equivalent electrical schematic is shown. In the figure, 1-2 is a main line, 3-4 and 5-6 are branch lines, port 1 is an input port, port 2 is an output port, port 3 is a forward coupling port, port 5 is a reverse coupling port, port 4 and port 6 are connected with matched loads, and C1-C8 are non-equidistant capacitors connected in parallel between the branch lines and the ground.
The branch lines are arranged in parallel with the main line, and weak signals are coupled to the branch lines 3-4 and 5-6 from the main line 1-2 through parallel line electromagnetic induction; for the capacitor C4, when an electromagnetic signal enters the capacitor C4 from a branch line and returns to the branch line to be divided into two paths of signals, one path of the signal follows the branch line and reaches the port 4, the other path of the signal is transmitted along the branch line towards the port 3, when the signal reaches a node where the capacitor C3 is connected with the branch line, the signal meets the return signal of the capacitor C3, the equivalent capacitance value and the distance are adjusted to enable the phases of the two signals at the node to be identical, the synthesized signal continues to be transmitted along the branch line towards the port 3, when the first synthesized signal reaches the capacitor C2, the signal meets the return signal of the capacitor C2 at the node where the C2 is connected with the branch line and reaches the same phase, the signal is synthesized again, the synthesized signal continues to be transmitted along the branch line towards the port 3, and also the signal is synthesized again at the node where the capacitor C1 is connected with the branch line and finally transmitted to the port 3 of the forward coupling port, and the coupling signal level reaching the port 3 is far greater than the signal level reaching the port 5 of the reverse coupling port; because the forward and reverse information extraction is not on the same branch line, the signal interference caused by the adaptation of the forward and reverse coupling signals can be avoided, and the signal extraction precision can be greatly improved.
Therefore, as can be seen from the circuit equivalent schematic diagram, when the signal is input from the N-type connector A1 at the left end, the SMA connectors B3 and B5 output stronger coupling signals, and the SMA connectors B4 and B6 output weaker signals. When signals are input by the N-type connector A2, the SMA connector B4 and the SMA connector B6 output stronger coupling signals, the SMA connector B3 and the SMA connector B5 output weaker signals, and when the difference of the coupling strength of the SMA connector B3 and the SMA connector B4 or the SMA connector B5 and the SMA connector B6 to the same N-type connector signals is larger, the reflected reverse small signal level can be effectively extracted during forward large signal transmission without being covered by the large signal level, so that high-directivity signal extraction is realized.
As shown in fig. 9, S21 is the transmission loss from the coupler port 1 to the port 2, and S11 is the return loss of the coupler input port, i.e., the port 1; s41 is the signal coupling amount from the coupler port 1 to the coupling port 4, namely the coupling degree of the coupler; s31 is the signal coupling amount from the coupler port 1 to the isolation port 3, namely the isolation degree of the coupler; S31-S41 are the signal differences from port 1 to isolated port 3 and coupled port 4, i.e. the directivity of the coupler. As can be seen from the figure, the directivity of the coupler is 39dB or more.
The high-directivity coupler has the advantages of small structure, stable operation and excellent performance, can effectively extract forward and reverse signals, and can quickly and accurately judge reflection faults so as to meet the requirements of miniaturization and reliability of ground measurement and control communication equipment.
The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (10)
1. A miniaturized high directivity coupler characterized by: the high-voltage power supply comprises a cavity main body structure formed by connecting an upper cavity (1), a middle cavity (2) and a lower cavity (3), and a first inner conductor (6) arranged in the middle cavity (2), and a second inner conductor (7) arranged in the upper cavity (1) and the lower cavity (3);
the middle part of the middle cavity (2) is provided with a cavity structure (201) penetrating up and down, the side surface of the middle cavity (2) is provided with a connecting hole (202) for communicating the cavity structure (201), the structures of the upper cavity (1) and the lower cavity (3) are identical and symmetrically arranged on the upper end surface and the lower end surface of the middle cavity (2), the inner end surfaces of the upper cavity (1) and the lower cavity (3) are respectively provided with a cavity groove (8) corresponding to the cavity structure (201), the inner end surfaces of the cavity grooves (8) are provided with a plurality of non-equidistant cylindrical bosses (9), and the inner end surfaces of the cavity grooves (8) positioned on the two sides of the cylindrical bosses (9) are also provided with mounting holes (10);
the first inner conductor (6) is horizontally arranged in the cavity structure (201) to serve as a main circuit, a similar coaxial closed cavity is formed among the first inner conductor (6), the upper cavity (1), the middle cavity (2) and the lower cavity (3), two ends of the first inner conductor (6) are connected in the connecting hole (202) in a matching mode, and the outer parts of the two ends of the first inner conductor are respectively connected with an input port and an output port;
the second inner conductor (7) is composed of a parallel section which is parallel to the first inner conductor (6) and arranged in the cavity groove (8) and two connecting sections which are vertically connected at two ends of the parallel section, wherein the parallel section is used as a branch circuit for coupling a main circuit magnetic field, the branch circuit is connected with a cylindrical boss (9) in a contact manner, the two connecting sections are both matched and connected in a mounting hole (10), the ends of the two connecting sections which are positioned in the upper cavity (1) and the lower cavity (3) and diagonally correspond to each other are respectively connected with a forward coupling port and a reverse coupling port, and the ends of the other two connecting sections are connected with a matched load.
2. A miniaturized highly directional coupler according to claim 1, characterized in that: the first inner conductor (6) is a metal conductor with a cylindrical surface plated with gold, the radius of two ends of the first inner conductor is smaller than that of the middle part, and the two ends of the first inner conductor are connected with the N-type connector (4) through direct insertion.
3. A miniaturized highly directional coupler according to claim 2, characterized in that: the axial middle part of N type connector (4) is provided with insulating medium (401), and the middle part of insulating medium (401) is provided with hollow N type connector inner conductor (402), and the internal diameter of N type connector inner conductor (402) is the same with the both ends external diameter of first inner conductor (6), and both are fixed through direct insertion mode connection.
4. A miniaturized highly directional coupler according to claim 2, characterized in that: the N-type connector is characterized in that first threaded holes (11) are formed in the inner end face of the N-type connector (4), the side end faces of the upper cavity (1) and the side end face of the lower cavity (3), and the N-type connector (4) is fixedly connected to the upper cavity (1) and the lower cavity (3) through the matching of bolts and the first threaded holes (11).
5. A miniaturized highly directional coupler according to claim 1, characterized in that: and the ends of the two connecting sections of the second inner conductor (7) are sleeved with hollow cylindrical polytetrafluoroethylene medium blocks (12) and are fixed on the middle cavity (2) through interference fit between the polytetrafluoroethylene medium blocks (12) and the connecting holes (202).
6. A miniaturized highly directional coupler according to claim 1 or 5, characterized in that: the two connecting section ends of the second inner conductor (7) are provided with probes (13), and the end of each connecting section is connected with an SMA connector (5) in an in-line manner through the probes (13).
7. A miniaturized highly directional coupler according to claim 6, wherein: the axial middle part of the SMA connector (5) is provided with a hollow SMA connector inner conductor (501), the inner diameter of the SMA connector inner conductor (501) is the same as the diameter of the probe (13) on the second inner conductor (7), and the inner diameter of the SMA connector inner conductor and the diameter of the probe are connected and fixed in a direct insertion mode.
8. A miniaturized highly directional coupler according to claim 6, wherein: the inner end face of the SMA connector (5), the outer end faces of the upper cavity (1) and the lower cavity (3) are respectively provided with a second threaded hole (14), and the SMA connector (5) is fixedly connected to the upper cavity (1) or the lower cavity (3) through the matching of bolts and the second threaded holes (14).
9. A miniaturized highly directional coupler according to claim 1, characterized in that: the upper cavity (1) and the lower cavity (3) are respectively provided with a cavity installation through hole (15) on the outer end faces, the upper end face and the lower end face of the middle cavity (2) are respectively provided with a threaded counter bore (16) corresponding to the cavity installation through holes (15), and the upper cavity (1) and the lower cavity (3) are respectively and fixedly connected to the middle cavity (2) through the matched connection of the screws with the cavity installation through holes (15) and the threaded counter bores (16).
10. A miniaturized highly directional coupler according to claim 1, characterized in that: the cavity structure (201) and the cavity groove (8) are rectangular cross-section structures with the same size, the number of the cylindrical bosses (9) in the cavity groove (8) is four, and the four cylindrical bosses (9) are equivalent to a grounded parallel capacitor by adjusting the capacitance value and the spacing of the equivalent capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311009865.XA CN116914398A (en) | 2023-08-11 | 2023-08-11 | Miniaturized high directivity coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311009865.XA CN116914398A (en) | 2023-08-11 | 2023-08-11 | Miniaturized high directivity coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116914398A true CN116914398A (en) | 2023-10-20 |
Family
ID=88358362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311009865.XA Pending CN116914398A (en) | 2023-08-11 | 2023-08-11 | Miniaturized high directivity coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116914398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393981A (en) * | 2023-12-12 | 2024-01-12 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-frequency high-power high-reliability double directional coupler |
-
2023
- 2023-08-11 CN CN202311009865.XA patent/CN116914398A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393981A (en) * | 2023-12-12 | 2024-01-12 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-frequency high-power high-reliability double directional coupler |
| CN117393981B (en) * | 2023-12-12 | 2024-03-22 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-frequency high-power high-reliability double directional coupler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7429903B2 (en) | Dual directional coupler with multi-stepped forward and reverse coupling rods | |
| US7692508B2 (en) | Spring loaded microwave interconnector | |
| CN116914398A (en) | Miniaturized high directivity coupler | |
| CN109921164B (en) | Non-contact ridge waveguide microstrip coupling slit probe transition circuit | |
| CN106450643B (en) | E-surface waveguide directional coupler and sixteen-path waveguide power divider applying same | |
| CN111430850B (en) | Coaxial microstrip-to-coaxial connector applicable to cavity filter and assembling method | |
| CN112909471B (en) | High-isolation rectangular waveguide-microstrip power divider | |
| CN103000977A (en) | Broadband novel microstrip line three-way power divider | |
| CN107275735B (en) | Novel coaxial microstrip converter | |
| CN110190364B (en) | Microwave switch matrix for real-time microwave tomography | |
| CN103414004B (en) | A kind of 0-dB directional coupler based on multilayer technique | |
| CN113258244B (en) | Rectangular waveguide microstrip 0-degree-phase-difference high-isolation broadband power divider | |
| CN108808202A (en) | Highly reliable close coupling directional coupler based on RF coaxial structure | |
| CN208433502U (en) | Highly reliable close coupling directional coupler based on RF coaxial structure | |
| CN112652873A (en) | Design of fan-shaped microstrip line decoupling circuit | |
| CN109361045B (en) | Miniaturized broadband high-power coupler | |
| US7423497B2 (en) | Device for coupling suspended stripline and NRD guides | |
| CN101706570A (en) | Bidirectional coupler for radar transmitter | |
| CN103000978A (en) | Novel symmetrical power dividing ratio microstrip line three-branch power divider | |
| CN208062483U (en) | A kind of pump combiner of high coupling efficiency | |
| CN106450636B (en) | 3db electric bridge with coupling monitoring function | |
| CN114464976B (en) | Ku frequency band microstrip waveguide conversion device | |
| CN111725597B (en) | Dielectric transmission line coupler, dielectric transmission line coupling assembly and network equipment | |
| CN110518321B (en) | Switching structure of substrate integrated waveguide horizontal transition air rectangular waveguide | |
| Zhang et al. | A Flexible Non-Radiative Dielectric Waveguide with a 1-dB Loss PCB-to-NRD Coupler for mm-Wave Array Applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |