CN219534846U - Microwave combining and branching radio frequency unit realized by utilizing circulator - Google Patents
Microwave combining and branching radio frequency unit realized by utilizing circulator Download PDFInfo
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- CN219534846U CN219534846U CN202320097102.4U CN202320097102U CN219534846U CN 219534846 U CN219534846 U CN 219534846U CN 202320097102 U CN202320097102 U CN 202320097102U CN 219534846 U CN219534846 U CN 219534846U
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- 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
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Abstract
The utility model discloses a microwave combining and branching radio frequency unit realized by a circulator, which comprises: the device comprises a shell, wherein a cavity is formed in the shell, a plurality of filter modules and a plurality of circulator modules are arranged in the cavity, the circulator modules are connected in a cascade manner, and the filter modules are respectively arranged on the front side and the back side of the circulator modules; the two sides of the shell are provided with a transmitting port and a receiving port; the filter module includes a TX filter and an RX filter that combine to implement a multi-channel combining and splitting unit. The utility model utilizes the unidirectional transmission characteristic of the circulator and the out-of-band reflection characteristic of the filter to combine or separate different radio frequency signals step by step and transmit the signals according to the specified direction, thereby reducing the cost of the multi-channel microwave receiving and transmitting system.
Description
Technical Field
The utility model relates to a microwave combining and branching radio frequency unit realized by using a circulator, and belongs to the technical field of split long-distance trunk microwave systems.
Background
Along with the rapid development of mobile communication, the application of a high-frequency antenna adopting a transceiving shared scheme is more and more widespread, wherein an outdoor microwave combining and branching radio frequency unit is a key component for realizing the transceiving shared antenna, and has the function of combining multiple radio frequency channels into one path to be transmitted through the antenna in a transmitting direction, or separating and filtering signals received by the antenna in a receiving direction, and then processing the signals by the corresponding radio frequency unit.
The filter is a passive device for isolating a receiving signal from a transmitting signal or isolating a receiving signal from a transmitting signal, and ensuring the operation of receiving or transmitting signals is a key for realizing the combination or separation of radio frequency channels. The microwave combining and branching radio frequency unit utilizes the single transmission characteristic of the circulator and the out-of-band reflection characteristic of the filter to combine or separate different radio frequency signals step by step, and transmits the signals in a specified direction, and the signals cannot be transmitted in the reverse direction. As the requirements of the communication system for integration and miniaturization are increasing, the combination design and production of the communication system and other passive devices become research and development of communication equipment suppliers.
The traditional digital microwave receiving and transmitting system structure is mainly formed by connecting an antenna waveguide with a public waveguide end of a duplexer in a specific mode, wherein the receiving and transmitting ends of the duplexer are respectively connected with an embedded waveguide isolator, and the flange waveguide isolator is finally aligned and connected with a receiving and transmitting end of a microwave main board. Has the following disadvantages: multiple traditional microwave receiving and transmitting system structures are needed for realizing the transmission and the reception of multiple radio frequency channels, so that the occupied space is large and the cost is high; the structure of a plurality of traditional microwave receiving and transmitting systems has the problem of interference among adjacent channels, and can seriously influence the transmission of signals, so that the system works poorly; system maintenance, problem investigation, etc. of the conventional microwave transceiver system may be difficult.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a microwave combining and splitting radio frequency unit realized by using a circulator, which utilizes the unidirectional transmission characteristic of the circulator and the out-of-band reflection characteristic of a filter to combine or separate different radio frequency signals step by step and transmit the signals according to a specified direction, so that the cost of a multi-channel microwave receiving and transmitting system is reduced. In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a microwave combining and branching radio frequency unit realized by a circulator, which comprises: the device comprises a shell, wherein a cavity is formed in the shell, a plurality of filter modules and a plurality of circulator modules are arranged in the cavity, the circulator modules are connected in a cascade manner, and the filter modules are respectively arranged on the front side and the back side of the circulator modules; the two sides of the shell are provided with a transmitting port and a receiving port;
the filter module comprises a TX filter and an RX filter, and the TX filter and the RX filter are combined to realize a multi-channel combining and splitting unit;
the transmitting end of the TX filter is connected with the input end of one circulator module, and the output ends of a plurality of circulator modules connected with the transmitting end of the TX filter are connected in series and then connected with the transmitting port; the receiving end of the RX filter is connected with the output end of one circulator module, and the input ends of a plurality of circulator modules connected with the receiving end of the RX filter are connected in series and then connected with the receiving port.
Further, the circulator module comprises a circulator cavity, a circulator shielding cover, ferrite, a metal matching block and a magnetic field source;
the metal matching block is used for ensuring that the interface of the circulator module is matched with the ferrite impedance;
the metal matching block and the circulator cavity body and the circulator shielding cover are integrally processed to ensure the dimensional accuracy;
the magnetic field sources are respectively arranged in the grooves of the cavity of the circulator and the grooves of the shielding cover of the circulator.
Further, the magnetic field source is fixed in the groove after the microwave combining and branching radio frequency unit realized by the circulator is debugged.
Further, the ferrite is garnet material.
Further, the magnetic field source is a high-temperature permanent magnet, and the material is a samarium cobalt permanent magnet.
Further, the filter module adopts a band-pass filter, and one of an invar tubular filter, an aluminum filter and a dielectric filter is selected.
Further, the junction is hard-wired using a waveguide port.
Compared with the prior art, the microwave combining and splitting radio frequency unit realized by the circulator provided by the embodiment of the utility model has the beneficial effects that:
the utility model comprises the following steps: the device comprises a shell, wherein a cavity is formed in the shell, a plurality of filter modules and a plurality of circulator modules are arranged in the cavity, the circulator modules are connected in a cascade manner, and the filter modules are respectively arranged on the front side and the back side of the circulator modules; the two sides of the shell are provided with a transmitting port and a receiving port; the utility model separates the signals with different frequencies through the circulator, can realize the synthesis and separation of multiple radio frequency channels, is convenient for cascading, can connect more channels in series for synthesis and separation, and can realize the channel transmission with larger capacity; the filter and the circulator are closely arranged, the structure is compact, the structure is suitable for adjacent frequency channels, and the filter can be properly adjusted after the whole machine is installed, so that the adjacent frequency filters normally operate within the self use frequency range and are not interfered with each other;
the filter module comprises a TX filter and an RX filter, wherein the TX filter and the RX filter are combined to realize a multi-channel combining and splitting unit; the transmitting end of the TX filter is connected with the input end of one circulator module, and the output ends of a plurality of circulator modules connected with the transmitting end of the TX filter are connected in series and then connected with the transmitting port; the receiving end of the RX filter is connected with the output end of one circulator module, and the input ends of a plurality of circulator modules connected with the receiving end of the RX filter are connected in series and then connected with the receiving port. According to the utility model, different filter structures can be selected according to the subband interval and bandwidth requirements, so that the cost of the filter is reduced to the minimum, and the filter structure is simple and convenient for mass production;
the number of the filters and the circulators can be changed according to the change of the number of the requirements, and the flexibility is high.
Drawings
Fig. 1 is a schematic structural diagram of a microwave combining and branching radio frequency unit implemented by using a circulator according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a microwave combining and splitting radio frequency unit implemented by using a circulator according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a circulator module in a microwave combining and splitting radio frequency unit implemented by using a circulator according to an embodiment of the utility model;
fig. 4 is a top view of a filter module in a microwave combining and splitting rf unit implemented by using a circulator according to an embodiment of the present utility model;
fig. 5 is a bottom view of a filter module in a microwave combining and splitting rf unit implemented by using a circulator according to an embodiment of the present utility model.
In the figure:
1. 1-1 parts of filter modules, 1-2 parts of butt joint elbows, 1-3 parts of internal butt joint elbows, 1-4 parts of invar tube cavities, 1-5 parts of invar resonance rods, 1-6 parts of baffle rods and invar tuning screws;
2. 2-1 parts of circulator modules, 2-2 parts of circulator cavities, 2-3 parts of circulator shielding covers and 2-3 parts of ferrites; 2-4 parts of magnetic field source, 2-5 parts of metal matching block;
3. a transmit port;
4. a receiving port.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "upper/lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured/arranged," "coupled," "connected," and the like are to be construed broadly and include, for example, "connected," either fixedly, detachably, or integrally; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and fig. 2, a microwave combining and branching radio frequency unit implemented by using a circulator includes a casing, and two sides of the casing are provided with a transmitting port 3 and a receiving port 4. A cavity is arranged in the shell, and a plurality of filter modules 1 and a plurality of circulator modules 2 are arranged in the cavity. The circulator modules 2 are connected in cascade, and the filter modules 1 are respectively arranged on the front side and the back side of the circulator modules 2. The filter and the circulator are closely arranged, the structure is compact, the structure is suitable for adjacent frequency channels, and the filter can be properly regulated after the whole machine is installed, so that the adjacent frequency filters normally operate within the self use frequency range and are not interfered with each other.
The number of matched filters of the circulator can be changed according to the change of the number of requirements, and the flexibility is high
The filter module 1 includes a TX filter and an RX filter, which are combined to implement a multi-channel combining and splitting unit. As shown in fig. 1 and 2, in the present embodiment, there are 4 TX filters and 4 RX filters, which are called 4T4R. The utility model is also applicable to 2T2R, 3T3R or 5T5R, etc. and the difference is only that the number of circulators used by the product and the number of filters butted on the circulators are different. The number of the circulator matched filters can be changed according to the change of the number of the requirements, and the flexibility is high.
The transmitting end of the TX filter is connected with the input end of one circulator module 2, and the output ends of a plurality of circulator modules 2 connected with the transmitting end of the TX filter are connected in series and then connected with the transmitting port 3; the receiving end of the RX filter is connected with the output end of one circulator module 2, and the input ends of a plurality of circulator modules 2 connected with the receiving end of the RX filter are connected in series and then are connected with the receiving port 4. The junction is hard-wired using a waveguide port.
The filter module 1 uses a strip-shaped filter result, adopts a band-pass filter, selects one of an invar tubular filter, an aluminum filter and a dielectric filter, can select different filter structures according to subband interval and bandwidth requirements, reduces the cost of the filter to the minimum, and has simple structure and convenient batch production. The filter can ensure the frequency point of the self channel and isolate the adjacent channels, and can select materials with different materials according to different requirements of the channels so as to meet the index requirements of the whole machine.
As shown in fig. 4 and 5, the invar tubular filter structure mainly comprises a butt joint elbow 1-1, an internal butt joint elbow 1-2, a Yan Gangguan cavity 1-3, an invar resonance rod 1-4, a baffle rod 1-5 and an invar tuning screw rod 1-6. The butt joint elbow 1-1 and the internal butt joint elbow 1-2 are made of aluminum, silver is plated on the surfaces of the butt joint elbow and welded with the Yan Gangguan cavity 1-3, and the two elbows are respectively an input port and an output port of the filter. The invar resonant rod 1-4 is welded with the Yan Gangguan cavity 1-3 and is used for meeting the product design of different frequency bands. The baffle rod 1-5 is welded with the Yan Gangguan cavity 1-3 to meet the requirements of different bandwidths of products. The invar tuning screws 1-6 are used for properly adjusting product indexes; the filter is a welding piece, the size of a finished product is controlled by using an invar tool clamp, and the phenomenon that the size difference is large after the product is welded at high temperature and returns to normal temperature and the filter cannot be installed with a matching piece is avoided.
Fig. 3 shows a schematic structure of a circulator module 2, which comprises a circulator cavity 2-1, a circulator shielding cover 2-2, ferrite 2-3, a metal matching block 2-5 and a magnetic field source 2-4. The metal matching block 2-5 is used to ensure that the interface of the circulator module 2 is impedance matched with the ferrite 2-3. Because of considering the product performance and intermodulation indexes, the metal matching block 2-5, the circulator cavity 2-1 and the circulator shielding cover 2-2 are integrally processed so as to ensure the dimensional accuracy. The two magnetic field sources 2-4 are respectively arranged in the groove of the circulator cavity 2-1 and the groove of the circulator shielding cover 2-2. After the microwave combining and branching radio frequency unit realized by the circulator is debugged, the magnetic field sources 2-4 are fixed in the grooves. In this embodiment, glue is used for fixing. Ferrite 2-3 is garnet material, and has the characteristics of small magnetic loss and dielectric loss, high temperature stability, high apparent density and good compactness. The magnetic field source 2-4 adopts a high-temperature permanent magnet, and the material is a samarium cobalt permanent magnet, and the samarium cobalt permanent magnet is mainly characterized by high magnetic property, good temperature performance and the highest working temperature of 250-350 ℃.
The circulator is machined, no welding is used, the geometric dimension precision is high, the assembly error is small, the installation gyromagnetic ferrite 2-3 is positioned by a round hole in the cavity, and the installation dimension precision of the ferrite 2-3 is ensured.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. A microwave combining and splitting radio frequency unit implemented by a circulator, comprising: the device comprises a shell, wherein a cavity is formed in the shell, a plurality of filter modules and a plurality of circulator modules are arranged in the cavity, the circulator modules are connected in a cascade manner, and the filter modules are respectively arranged on the front side and the back side of the circulator modules; the two sides of the shell are provided with a transmitting port and a receiving port;
the filter module comprises a TX filter and an RX filter, and the TX filter and the RX filter are combined to realize a multi-channel combining and splitting unit;
the transmitting end of the TX filter is connected with the input end of one circulator module, and the output ends of a plurality of circulator modules connected with the transmitting end of the TX filter are connected in series and then connected with the transmitting port; the receiving end of the RX filter is connected with the output end of one circulator module, and the input ends of a plurality of circulator modules connected with the receiving end of the RX filter are connected in series and then connected with the receiving port.
2. The microwave combining and splitting radio frequency unit implemented with a circulator of claim 1, wherein the circulator module comprises a circulator cavity, a circulator shield cap, ferrite, a metal matching block, and a magnetic field source;
the metal matching block is used for ensuring that the interface of the circulator module is matched with the ferrite impedance;
the metal matching block and the circulator cavity body and the circulator shielding cover are integrally processed to ensure the dimensional accuracy;
the magnetic field sources are respectively arranged in the grooves of the cavity of the circulator and the grooves of the shielding cover of the circulator.
3. The microwave combining and splitting radio frequency unit implemented by using a circulator according to claim 2, wherein the magnetic field source is fixed in the groove after the microwave combining and splitting radio frequency unit implemented by using the circulator is debugged.
4. The microwave combining and splitting radio frequency unit implemented with a circulator of claim 2, wherein the ferrite is garnet.
5. The microwave combining and branching radio frequency unit implemented by using a circulator according to claim 2, wherein the magnetic field source is a high-temperature permanent magnet, and the material is a samarium cobalt permanent magnet.
6. The microwave combining and splitting radio frequency unit implemented by using a circulator according to claim 1, wherein the filter module adopts a band-pass filter, and is one of an invar tubular filter, an aluminum filter and a dielectric filter.
7. The microwave combining and splitting radio frequency unit implemented with a circulator of claim 1, wherein the junction is hardwired using a waveguide port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320097102.4U CN219534846U (en) | 2023-02-01 | 2023-02-01 | Microwave combining and branching radio frequency unit realized by utilizing circulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320097102.4U CN219534846U (en) | 2023-02-01 | 2023-02-01 | Microwave combining and branching radio frequency unit realized by utilizing circulator |
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| CN219534846U true CN219534846U (en) | 2023-08-15 |
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| CN202320097102.4U Active CN219534846U (en) | 2023-02-01 | 2023-02-01 | Microwave combining and branching radio frequency unit realized by utilizing circulator |
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- 2023-02-01 CN CN202320097102.4U patent/CN219534846U/en active Active
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