CN218975767U - Radio frequency directional coupler - Google Patents
Radio frequency directional coupler Download PDFInfo
- Publication number
- CN218975767U CN218975767U CN202223430072.9U CN202223430072U CN218975767U CN 218975767 U CN218975767 U CN 218975767U CN 202223430072 U CN202223430072 U CN 202223430072U CN 218975767 U CN218975767 U CN 218975767U
- Authority
- CN
- China
- Prior art keywords
- conductor structure
- conductor
- main line
- coupling
- load
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Waveguides (AREA)
Abstract
The utility model discloses a radio frequency directional coupler, which comprises a main body, wherein the main body comprises a mounting seat, a plurality of conductor structures are arranged on the mounting seat, each conductor structure comprises a main line conductor structure, a load conductor structure and a coupling conductor structure, the main line conductor structure, the load conductor structure and the coupling conductor structure are respectively provided with an outer conductor and an inner conductor, the inner conductor is arranged in the outer conductor, and an insulating support piece made of aluminum oxide is arranged between the outer conductor and the inner conductor; compared with the prior art, the coupler adopts high-purity alumina as an insulating material, and designs and processes insulating support sheets required by the main line inner conductor and the coupling port inner conductor; the coaxial directional coupler has excellent radiation resistance besides excellent radio frequency indexes (such as reflection loss, insertion loss, directivity and the like) of other coaxial directional couplers, and can be applied to a radio frequency microwave system in a strong radiation environment.
Description
Technical Field
The utility model relates to a radio frequency 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.
The coaxial weak directional coupler is used for a radio frequency system connected by a coaxial line. The main line interface is the same as the coaxial line specification of the radio frequency system, and can be connected into the system. The weak directional coupler may be designed with multiple coupled ports, each of which may take a portion of the power signal from the main line channel for detection and monitoring. The coupling ports have different directions, and can monitor the forward power and the reverse power of the main line respectively. For a weak directional coupler having n coupled ports (including forward and reverse coupled ports), the overall coupler contains 2 main line ports (i.e., input and output ports), n coupled ports, and n load ports. The load port of the directional coupler is used for connecting a matched load, and the matched load can be externally connected through an interface and can also be designed into the directional coupler.
Like other coaxial devices, the main line and the coupling test port of the coaxial weak directional coupler are coaxial structures and comprise a coaxial inner conductor and a coaxial outer conductor, and TEM mode electromagnetic waves propagate between the coaxial outer conductor and the inner conductor. The coaxial outer conductor and the inner conductor must be well insulated from each other, and an insulating member is required to support the coaxial inner conductor and to be placed in the coaxial outer conductor. The most commonly used insulating support material used in radio frequency coaxial devices is Polytetrafluoroethylene (PTFE). Polytetrafluoroethylene has good physical, chemical and electromagnetic properties, and is widely used in various microwave devices because of its low dielectric constant, low loss tangent, and good physical and chemical stability. However, polytetrafluoroethylene materials have poor radiation resistance, degradation is caused after high-energy radiation, and the electrical property and mechanical property of the polymer are obviously reduced. Study data shows that 1000Gy radiation can cause severe damage to polytetrafluoroethylene materials. Thus, polytetrafluoroethylene materials are unsuitable for use in microwave systems in strongly radiating environments.
Currently, in various industrial and medical accelerator systems, the acceleration of particles by a high power rf power source is a common particle acceleration mode. Various particles can emit strong X rays or gamma rays in the acceleration or turning process, and although the radio frequency system can design various radiation protection measures, higher requirements are put forward on the radiation protection performance of various devices in the system. The traditional weak directional coupler adopting polytetrafluoroethylene as a main line inner conductor and a coupling port inner conductor for insulating support is not suitable for being applied to the working environment of strong radiation.
The utility model comprises the following steps:
the utility model aims to solve the defects in the prior art and provides a radio frequency directional coupler.
The utility model provides a radio frequency directional coupler, includes the mount pad, the mount pad on be equipped with a plurality of conductor structures, conductor structure include main line conductor structure, load conductor structure and coupling conductor structure, main line conductor structure, load conductor structure and coupling conductor structure all be equipped with outer conductor and inner conductor, the inner conductor setting in outer conductor, outer conductor and inner conductor between be equipped with the insulating support piece of aluminium oxide material.
Because the dielectric constants of the alumina and the polytetrafluoroethylene are different, the structure of the alumina insulating support piece is required to be changed, the main line conductor structure comprises a main line outer conductor and a main line inner conductor, through holes are formed in the middle of the insulating support piece, and a plurality of fan-shaped through holes are formed around the through holes;
the insulation support is embedded in the main line outer conductor, the main line inner conductor is embedded in a through hole in the middle of the insulation support, and a main line input port and a main line output port are arranged on the main line inner conductor structure.
Because the alumina ceramic supporting sheet cannot be cut at will like the polytetrafluoroethylene supporting sheet, the alumina ceramic supporting sheet can only be assembled integrally, the main line inner conductor comprises a first part, a second part and a third part, one end of the first part is a main line input port, the other end of the first part is connected with one end of the second part, one end of the second part is connected with one end of the third part, and the other end of the third part is a main line output port;
the number of the insulating supports in the main line conductor structure is two, one insulating support is positioned at the junction of the first part and the second part, and the other insulating support is positioned at the junction of the second part and the third part.
In order to ensure the connection of the coupling port and the load port, the device also comprises a forward coupling head and a reverse coupling head which are arranged at the outer side of the mounting seat,
the load conductor structure comprises a first load conductor structure and a second load conductor structure, and the coupling conductor structure comprises a forward coupling conductor structure and a reverse coupling conductor structure; the first load conductor structure and the forward coupling conductor structure are arranged on the forward coupling head, and the second load conductor structure and the reverse coupling conductor structure are arranged on the reverse coupling head;
the first load conductor structure is provided with a first load port, the second load conductor structure is provided with a second load port, the forward coupling conductor structure is provided with a forward coupling port, and the reverse coupling conductor structure is provided with a reverse coupling port;
each coupling port can take out a part of power signals from the main line channel for detection and monitoring, the load port of the directional coupler is used for connecting a matched load, and the matched load can be externally connected through an interface or can be designed into the directional coupler.
In order to achieve the required coupling degree index, the forward coupling head and the reverse coupling head are provided with radial adjusting mechanisms, and the radial adjusting mechanisms are used for controlling the radial adjustment of the forward coupling head and the reverse coupling head along the main line conductor structure.
In order to change the polarity and directivity indexes of the coupling head, the forward coupling head and the reverse coupling head are respectively provided with a rotating mechanism, and the rotating mechanisms are used for controlling the coupling head to rotate around the axis of the coupling head.
In order to lock the coupling head which is debugged to a proper position, the forward coupling head and the reverse coupling head are provided with locking devices which are used for locking and fixing the positions of the forward coupling head and the reverse coupling head.
The beneficial effects are that:
compared with the prior art, the coupler adopts high-purity alumina as an insulating material, and designs and processes the main line inner conductor and the insulating support sheet required by the coupling port inner conductor. The coaxial directional coupler provided by the utility model has excellent radiation resistance besides excellent radio frequency indexes (such as reflection loss, insertion loss, directivity and the like) of other coaxial directional couplers, and can be applied to a radio frequency microwave system in a strong radiation environment;
meanwhile, the coupler is of a coupling strip line structure, and 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. Meanwhile, the coupling head can rotate 360 degrees around the axis of the coupling head so as to change the polarity and directivity index of the coupling head. 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.
According to the utility model, two high-purity alumina ceramic supporting plates are additionally arranged between the main line inner conductor and the outer conductor, so that the main line inner conductor and the outer conductor are coaxial, and the main line inner conductor can be prevented from moving along the axial direction.
Further, since the dielectric constant of alumina is generally about 9.5 to 10, the dielectric constant is slightly different depending on the purity of alumina and the composition of other components. Compared with the dielectric constant of polytetrafluoroethylene materials 2.2-2.3, the dielectric constant of alumina is higher, so when alumina is used as a material to design the coaxial inner and outer conductor insulating support sheet, the shape of the alumina ceramic support sheet is obviously different from that of the polytetrafluoroethylene sheet, and the alumina ceramic support sheet needs to be designed again;
because the alumina ceramic supporting sheet can not be cut at will like the polytetrafluoroethylene supporting sheet, the alumina ceramic supporting sheet can only be assembled integrally, and therefore, the main line inner conductor adopts a 3-section structure, and each section is connected by a screw.
Drawings
Fig. 1 is a schematic diagram of a radio frequency directional coupler;
fig. 2 is a cross-sectional view of a radio frequency directional coupler;
fig. 3 is a left side view of a radio frequency directional coupler;
FIG. 4 is a schematic view of an insulating support;
in the figure, 1, a mounting seat, 2, a main line outer conductor, 3, a forward coupling head, 4, a first load conductor structure, 5, a forward coupling conductor structure, 6, a reverse coupling conductor structure, 7, a second load conductor structure, 8, a reverse coupling head, 9, a main line inner conductor, 10 and an insulating support 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, the installation seat 1, the main line outer conductor 2, the forward coupling head 3, the first load conductor structure 4, the forward coupling conductor structure 5, the reverse coupling conductor structure 6, the second load conductor structure 7, the reverse coupling head 8, the main line inner conductor 9 and the insulating support 10;
the utility model provides a radio frequency directional coupler, includes mount pad 1, mount pad 1 on be equipped with a plurality of conductor structures, conductor structure include main line conductor structure, load conductor structure and coupling conductor structure, main line conductor structure, load conductor structure and coupling conductor structure all be equipped with outer conductor and inner conductor, the inner conductor setting in outer conductor, outer conductor and inner conductor between be equipped with the insulating support piece 10 of aluminium oxide material.
In this embodiment, the main line conductor structure includes a main line outer conductor 2 and a main line inner conductor 9, a through hole is provided in the middle of the insulating support 10, and a plurality of fan-shaped through holes are provided around the through hole;
the insulation support 10 is embedded in the main line outer conductor 2, the main line inner conductor 9 is embedded in a through hole in the middle of the insulation support 10, and the main line inner conductor 9 is structurally provided with a main line input port and a main line output port.
In this embodiment, the main line inner conductor 9 includes a first portion, a second portion, and a third portion, where one end of the first portion is at the main line input port, the other end of the first portion is connected to one end of the second portion, one end of the second portion is connected to one end of the third portion, and the other end of the third portion is at the main line output port;
the number of the insulating supports 10 in the main line conductor structure is two, wherein one insulating support 10 is located at the junction of the first portion and the second portion, and the other insulating support 10 is located at the junction of the second portion and the third portion.
In the embodiment, the device also comprises a forward coupling head 3 and a reverse coupling head 8, wherein the forward coupling head 3 and the reverse coupling head 8 are arranged on the outer side of the mounting seat 1,
the load conductor structure comprises a first load conductor structure 4 and a second load conductor structure 7, and the coupling conductor structure comprises a forward coupling conductor structure 5 and a reverse coupling conductor structure 6; the first load conductor structure 4 and the forward coupling conductor structure 5 are arranged on the forward coupling head 3, and the second load conductor structure 7 and the reverse coupling conductor structure 6 are arranged on the reverse coupling head 8;
the first load conductor structure 4 is provided with a first load port, the second load conductor structure 7 is provided with a second load port, the forward coupling conductor structure 5 is provided with a forward coupling port, and the reverse coupling conductor structure 6 is provided with a reverse coupling port.
In this embodiment, the forward coupling head 3 and the reverse coupling head 8 are both provided with radial adjusting mechanisms, and the radial adjusting mechanisms are used for controlling radial adjustment of the forward coupling head 3 and the reverse coupling head 8 along the main line conductor structure.
In this embodiment, the forward coupling head 3 and the reverse coupling head 8 are both provided with a rotation mechanism, and the rotation mechanism is used for controlling the coupling head to rotate around its own axis.
In this embodiment, the forward coupling head 3 and the reverse coupling head 8 are provided with locking devices, and the locking devices are used for locking and fixing the positions of the forward coupling head 3 and the reverse coupling head 8.
The using method comprises the following steps: the main line outer conductor 2 is arranged inside, the insulating support piece 10 is embedded in the main line outer conductor 2, the main line inner conductor 9 is embedded in a through hole in the middle position of the insulating support piece 10, the forward coupling head 3 and the reverse coupling head 8 are arranged on the outer side of the mounting seat 1, the first load conductor structure 4 and the forward coupling conductor structure 5 are arranged on the forward coupling head 3, and the second load conductor structure 7 and the reverse coupling conductor structure are arranged on the reverse coupling head 8.
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 radio frequency directional coupler, includes the main part, its characterized in that, the main part includes the mount pad, the mount pad on be equipped with a plurality of conductor structures, conductor structure include main line conductor structure, load conductor structure and coupling conductor structure, main line conductor structure, load conductor structure and coupling conductor structure all be equipped with outer conductor and inner conductor, the inner conductor setting in outer conductor, outer conductor and inner conductor between be equipped with the insulating support piece of aluminium oxide material.
2. The radio frequency directional coupler according to claim 1, wherein the main line conductor structure comprises a main line outer conductor and a main line inner conductor, a through hole is formed in the middle of the insulating support, and a plurality of fan-shaped through holes are formed around the through hole;
the insulation support is embedded in the main line outer conductor, the main line inner conductor is embedded in a through hole in the middle of the insulation support, and a main line input port and a main line output port are arranged on the main line inner conductor structure.
3. The rf directional coupler of claim 2, wherein the main line inner conductor comprises a first portion, a second portion and a third portion, wherein one end of the first portion is at the main line input port, the other end of the first portion is connected to one end of the second portion, one end of the second portion is connected to one end of the third portion, and the other end of the third portion is at the main line output port;
the number of the insulating supports in the main line conductor structure is two, one insulating support is positioned at the junction of the first part and the second part, and the other insulating support is positioned at the junction of the second part and the third part.
4. The RF directional coupler as set forth in claim 1, further comprising a forward coupling head and a reverse coupling head, the forward coupling head and the reverse coupling head being disposed outside the mounting base,
the load conductor structure comprises a first load conductor structure and a second load conductor structure, and the coupling conductor structure comprises a forward coupling conductor structure and a reverse coupling conductor structure; the first load conductor structure and the forward coupling conductor structure are arranged on the forward coupling head, and the second load conductor structure and the reverse coupling conductor structure are arranged on the reverse coupling head;
the first load conductor structure is provided with a first load port, the second load conductor structure is provided with a second load port, the forward coupling conductor structure is provided with a forward coupling port, and the reverse coupling conductor structure is provided with a reverse coupling port.
5. The rf directional coupler of claim 4, wherein the forward and reverse coupling heads are provided with radial adjustment mechanisms for controlling radial adjustment of the forward and reverse coupling heads along the main line conductor structure.
6. The rf directional coupler of claim 4, wherein the forward coupling head and the reverse coupling head are provided with a rotation mechanism for controlling the coupling head to rotate about its own axis.
7. The radio frequency directional coupler according to claim 4, wherein the forward coupling head and the reverse coupling head are provided with locking devices, and the locking devices are used for locking and fixing the positions of the forward coupling head and the reverse coupling head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223430072.9U CN218975767U (en) | 2022-12-21 | 2022-12-21 | Radio frequency directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223430072.9U CN218975767U (en) | 2022-12-21 | 2022-12-21 | Radio frequency directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218975767U true CN218975767U (en) | 2023-05-05 |
Family
ID=86164042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223430072.9U Active CN218975767U (en) | 2022-12-21 | 2022-12-21 | Radio frequency directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218975767U (en) |
-
2022
- 2022-12-21 CN CN202223430072.9U patent/CN218975767U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2403700A1 (en) | Radio frequency antenna feed structures | |
| US8616898B2 (en) | High frequency coaxial cable | |
| CN218975767U (en) | Radio frequency directional coupler | |
| CN113839185A (en) | Ultra-wideband conformal omnidirectional antenna | |
| CN213483981U (en) | Four-ridge horn antenna | |
| AU2020100572A4 (en) | Board-to-board radio-frequency connector | |
| CN112003570A (en) | Millimeter wave noise source with high-frequency broadband and preparation method thereof | |
| CN210272609U (en) | Waveguide interface structure for preventing electromagnetic wave signal leakage | |
| CN110994081A (en) | Wide-band compact waveguide dielectric window | |
| CN110690557A (en) | Broadband low-profile millimeter wave antenna | |
| CN109786913B (en) | Radio frequency coaxial load based on thin film resistor | |
| CN211929852U (en) | Wall-through radio frequency connector | |
| CN216903272U (en) | Microwave transmission mechanism with radio frequency coaxial load | |
| CN112635945B (en) | High-voltage-resistant low-intermodulation broadband dielectric capacitor DC-isolator | |
| CN110661063A (en) | Substrate integrated waveguide feed broadband coaxial rotary joint | |
| CN216015673U (en) | Directional coupler and communication equipment | |
| CN220585478U (en) | Short wave broadband directional coupler | |
| CN219677569U (en) | Waveguide flange | |
| US11271326B2 (en) | Antenna system | |
| CN220474908U (en) | Double-line polarized horn antenna | |
| GB2460768A (en) | L-shaped coaxial connector | |
| CN115863979B (en) | Metal broadband circularly polarized patch antenna and communication equipment | |
| CN201556686U (en) | Millimeter-wave filter | |
| US11121514B1 (en) | Flange mount coaxial connector system | |
| CN220753741U (en) | Patch type dielectric antenna and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |