CN210668636U

CN210668636U - Combiner

Info

Publication number: CN210668636U
Application number: CN201921961061.9U
Authority: CN
Inventors: 陀思勇; 陈安; 陈凯; 孟弼慧; 陈嘉元
Original assignee: Comba Telecom Technology Guangzhou Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-06-02
Anticipated expiration: 2029-11-13

Abstract

The utility model provides a combiner, it is including the cavity that has the cavity and locate the common junction of cavity one end, one side that is close to the common junction in the cavity is equipped with first frequency resonance post, second frequency resonance post, third frequency resonance post and the coupling stick of being connected with the common junction, the cover is equipped with the metal covering rather than coupling connection on the coupling stick, first frequency resonance post passes through the wire and is connected with the metal covering in order to transmit first frequency channel signal, be equipped with on the second frequency resonance post and supply the coupling stick to insert and the coupling hole in order to realize second frequency channel signal transmission, third frequency resonance post locates one side of coupling stick and is connected with the transmission third frequency channel signal with the coupling of coupling stick. The coupling rod is arranged at the public joint and is respectively coupled and distributed with the first frequency resonance column, the second frequency resonance column and the third frequency resonance column in a bandwidth mode, the multi-band signal splitting/combining way integrated with the 5G frequency band is achieved, compared with a port structure of a traditional combiner, the multi-band signal splitting/combining way is simple in structure and meets the development of a 5G communication technology.

Description

Combiner

Technical Field

The utility model relates to a microwave passive device field especially relates to a combiner.

Background

With the development of mobile communication, communication frequency spectrums are more and more, and ways of combining multiple systems, sharing in co-construction and the like have become mainstream schemes for network construction, so that a great amount of applications of multi-frequency combiners are promoted. In the 2G/3G/4G era, the communication frequency range comprises a frequency band 1(698MHz-960MHz) and a frequency band 2(1710MHz-2700MHz), with the arrival of the 5G era, frequency bands of 700MHz, 1400MHz and 3500MHz are newly added, and how to realize the frequency band combination of multiple frequency bands and ultra wide bands is a key for co-building a 5G and the existing 2G/3G/4G system in the future.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an it has combiner of multifrequency section signal branch/way of 5G frequency channels to integrate to be provided.

In order to achieve the above object, the present invention provides the following technical solutions:

a combiner comprises a cavity with a cavity and a public joint arranged at one end of the cavity, wherein a first frequency resonance column, a second frequency resonance column, a third frequency resonance column and a coupling rod connected with the public joint are arranged on one side, close to the public joint, in the cavity, a metal sleeve in coupling connection with the coupling rod is sleeved on the coupling rod, the first frequency resonance column is connected with the metal sleeve through a conducting wire to transmit a first frequency band signal, a coupling hole is formed in the second frequency resonance column, the coupling rod is inserted into the coupling hole and is in coupling connection with the second resonance column to realize transmission of a second frequency band signal, and the third frequency resonance column is arranged on one side of the coupling rod and is in coupling connection with the coupling rod to transmit a third frequency band signal.

Further setting: the first frequency band comprises 698MHz-960MHz, the second frequency band comprises 1400MHz-2700MHz, and the third frequency band comprises 3300MHz-3800 MHz.

Further setting: and a medium ring for separating the coupling rod and the metal sleeve is arranged between the coupling rod and the metal sleeve.

Further setting: and the outer wall of the coupling rod is provided with a limiting groove for accommodating the medium ring.

Further setting: an opening which penetrates through the public joint and is used for the insertion of the coupling rod is formed in the cavity, and a medium supporting block which extends along the radial direction of the coupling rod and is abutted against the inner wall of the opening is arranged on the coupling rod.

Further setting: and the end part of the coupling rod inserted into the coupling hole is sleeved with an insulating medium piece which is abutted against the wall of the coupling hole.

Further setting: the coupling area and distance of the third frequency resonance column and the coupling rod are defined in relation to a third frequency band bandwidth transmitted by the third frequency resonance column.

Further setting: and a wave trap is further arranged in the cavity and is connected with the coupling rod through an inductor.

Further setting: the outside lightning protection circuit board that is equipped with of cavity, the inner core of trapper with the lightning protection circuit board is connected.

Further setting: at least three resonant cavities are arranged in the cavity corresponding to the first frequency resonant column, the second frequency resonant column and the third frequency resonant column, and signal single connectors corresponding to the resonant cavities one by one are arranged on one side, far away from the public connector, of the cavity.

Compared with the prior art, the utility model discloses a scheme has following advantage:

1. the utility model discloses an in the combiner, through set up coupling stick in common joint department respectively with first frequency resonance post, second frequency resonance post and third frequency resonance post carry out bandwidth coupling distribution, in order to realize first frequency, the branch/way of the three frequency channel of second frequency channel and third frequency channel, the relative bandwidth of signal single joint can reach 63.4%, and it has covered the new frequency channel of 5G, be adapted to 5G communication technology's development, can realize the multifrequency section, the frequency channel of ultra wide band divides/way in order to reach 5G system and the co-construction of current 2G 3G 4G system, adopt hierarchical coupling technique port structure in the combiner simultaneously, outside satisfying total bandwidth demand, do not have between each passageway broadband or disturb less, thereby reducible condition that causes the bandwidth distribution inequality.

2. The utility model discloses an among the combiner, the bandwidth coupling of coupling stick and first frequency resonance post, second frequency resonance post and third frequency resonance post is the capacitive coupling to the accessible trapper and inductance realize the direct current route of combiner, and set up the lightning protection circuit board in the cavity outside, in order to do the lightning protection function, and then play the effect of protection combiner.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an embodiment of the combiner of the present invention;

fig. 2 is a side cross-sectional view of one embodiment of the combiner of the present invention;

fig. 3a is a schematic structural view of the combiner of the present invention, which is used for illustrating the proximity of the common joint in the cavity;

fig. 3b is a schematic structural diagram illustrating a cover plate in the combiner of the present invention;

fig. 4 is a schematic diagram of the combiner for illustrating that the first frequency resonance column is connected with the metal sleeve through a wire.

In the figure, 1, a cavity; 11. an opening; 2. a cover plate; 21. a tuning screw; 3. a common connection; 4. a coupling rod; 41. a metal sheath; 42. a dielectric ring; 43. a limiting groove; 44. a medium supporting block; 45. a media case; 451. a brim; 5. a first frequency resonance column; 51. a wire; 6. a second frequency resonance column; 61. a coupling hole; 7. a third frequency resonating column; 8. a wave trap; 81. an inductance; 9. and a signal single connector.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

Please refer to fig. 1 to fig. 3b, the present invention relates to a combiner, which can realize the separation/combination of multiple frequency bands including 698MHz-960MHz, 1400MHz-2700MHz, 3300MHz-3800MHz or the sub-band included in the above frequency band range, wherein 3300MHz-3800MHz and the sub-band included in the frequency band range belong to the 5G frequency band, so that the combiner of the present invention covers the 5G frequency band, is adapted to the development of the 5G communication technology, and is helpful for the co-construction of the 5G system and the existing 2G/3G/4G system.

It should be noted that, the utility model discloses in be 698MHz-960MHz and contain the frequency band within range for the first frequency channel with the frequency channel scope, be 1400MHz-2700MHz and contain the frequency channel within range for the second frequency channel with the frequency channel scope, be 3300MHz-3800MHz and contain the frequency channel within range for the third frequency channel with the frequency channel scope.

The combiner comprises a cavity 1 and a cover plate 2 which are mutually covered, the cover plate 2 is fixedly connected with the side wall of the cavity 1, a closed cavity (not marked in the figure, the same below) for signal transmission is defined in the cavity 1, a public joint 3 is arranged at one end of the cavity 1, and a plurality of signal single joints 9 are arranged at the other end of the cavity 1, opposite to the public joint 3.

A first frequency resonance column 5, a second frequency resonance column 6, a third frequency resonance column 7 and a coupling rod 4 connected with the common joint 3 are arranged on one side of the cavity 1 close to the common joint 3, an opening 11 (namely a common port) which is communicated with the common joint 3 and used for inserting the coupling rod 4 is arranged on the side wall of the cavity 1, one end of the coupling rod 4 is inserted into the opening 11 and connected with the common joint 3, and the other end of the coupling rod extends into the cavity.

In addition, the coupling rod 4 is provided with a medium supporting block 44 at the middle part thereof and extending along the radial direction of the medium supporting block 44, and the medium supporting block 44 abuts against the inner wall of the opening 11 to support and fix the coupling rod 4. In this embodiment, the coupling rod 4 may be sleeved with a metal sleeve 41 on a side of the medium supporting block 44 away from the common connector 3, and the medium supporting block 44 may limit the metal sleeve 41. A dielectric ring 42 for separating the coupling rod 4 and the metal sleeve 41 is arranged between the coupling rod 4 and the metal sleeve 41, so that the coupling connection of the coupling rod 4 and the metal sleeve 41 is realized. In other embodiments, the media ring 42 is integrally formed with the media support block 44 to simplify assembly.

Preferably, the medium supporting block 44 and the medium ring 42 are made of teflon, which has excellent electrical insulation, good high temperature and low temperature resistance, and good mechanical properties and chemical stability.

Furthermore, a limiting groove 43 for accommodating the dielectric ring 42 is formed in the outer wall of the coupling rod 4, so as to limit the dielectric ring 42 to move along the length direction of the coupling rod 4, thereby improving the stability of the coupling connection between the coupling rod 4 and the metal sleeve 41.

The metal sleeve 41 is sleeved on the position, corresponding to the common port, of the coupling rod 4 in the cavity 1, the first frequency resonance column 5 is arranged on one side of the coupling rod 4, the first frequency resonance column 5 is connected with the metal sleeve 41 through a lead 51, so that port bandwidth distribution of a first frequency band (698MHz-960MHz and a sub-frequency band included in the frequency band range) is achieved, the lead 51 can be made of silver-plated copper wires, two ends of each silver-plated copper wire are correspondingly welded with the first frequency resonance column 5 and the metal sleeve 41 respectively, and the size of the coupling bandwidth of the first frequency resonance column 5 can be changed by adjusting the diameter of the lead 51 or changing the welding height of the lead 51 and the first frequency resonance column 5. Specifically, referring to fig. 4, if the welding height of the wire 51 and the first frequency resonance column 5 is set to be H, H becomes larger, the coupling bandwidth of the first frequency resonance column 5 becomes larger, and vice versa; meanwhile, the diameter of the wire 15 becomes thicker, the coupling bandwidth of the first frequency resonance column 5 becomes larger, and vice versa.

The second frequency resonance column 6 is arranged at one end of the coupling rod 4 opposite to the public port, a coupling hole 61 penetrating through the second frequency resonance column 6 is formed in the second frequency resonance column 6, the end part, far away from the public joint 3, of the coupling rod 4 is inserted into the coupling hole 61, and the second frequency resonance column 6 is in coupling connection with the coupling rod 4, so that port bandwidth distribution of a second frequency band (1400MHz-2700MHz and sub-bands included in the frequency band range) is achieved. In addition, the coupling bandwidth of the second frequency resonance column 6 can be adjusted by adjusting the depth of the coupling rod 4 inserted into the coupling hole 61.

The end of the coupling rod 4 inserted into the coupling hole 61 is sleeved with a dielectric sleeve 45 for separating the coupling rod 4 from the coupling hole 61 to prevent short circuit, and the end of the dielectric sleeve 45, into which the coupling rod 4 is inserted, is turned outwards to form a cap peak 451, the cap peak 451 is located between the coupling rod 4 and the second frequency resonant column 6 to avoid the situation that the coupling rod 4 is contacted with the second frequency resonant column 6 when the coupling rod 4 is inserted into the coupling hole 61 due to the size change of the coupling rod 4, so as to further improve the coupling stability of the coupling rod 4 and the second frequency resonant column 6. The medium sleeve 45 may be made of a common insulating material, and is preferably made of a polytetrafluoroethylene medium.

The third frequency resonant column 7 is disposed on a side of the coupling rod 4 opposite to the first frequency resonant column 5, and an outer side wall of the third frequency resonant column 7 is spaced from the coupling rod 4, so that the third frequency resonant column 7 is directly coupled with the coupling rod 4, thereby realizing port bandwidth allocation of a third frequency band (3300MHz-3800MHz and sub-frequency bands included in the frequency band range).

The position arrangement and the specific arrangement of the coupling mode of the first frequency resonance column 5, the second frequency resonance column 6 and the third frequency resonance column 7 can well avoid the interference among all frequency bands and improve the isolation.

Further, one side of the third frequency resonant column 7 close to the coupling rod 4 is arranged to be a plane, so that the effect of enhancing the coupling bandwidth can be achieved. In addition, the coupling bandwidth of the third frequency resonance column 7 can be adjusted by adjusting the coupling area and the distance between the third frequency resonance column 7 and the coupling rod 4. The third frequency resonance column 7 is capacitively coupled with the coupling rod 4, so that the adjustment is convenient, the coupling area and the distance between the third frequency resonance column 7 and the coupling rod 4 can be simply changed to achieve the purpose of adjusting the size of the coupling broadband, and meanwhile, the use of installation parts is reduced, so that the passive intermodulation is reduced.

The coupling rod 4 in the utility model is connected with the first frequency resonance column 5 through the metal sleeve 41 coupled with the coupling rod to realize the transmission of the signal of the first frequency band (698MHz-960MHz and the sub-frequency band included in the frequency band range); subsequently, the third frequency resonance column 7 is positioned on one side of the metal sleeve 51 close to the coupling rod 4 and coupled with the coupling rod 4, so that the transmission of signals in a third frequency band (3300MHz-3800MHz and sub-frequency bands included in the frequency band range) is realized; the end of coupling stick 4 inserts in the coupling hole 61 in order with the coupling of second frequency resonance post 6 has realized the transmission of second frequency channel (1400MHz-2700MHz and contain the sub-band at this frequency channel within range) signal, promptly the utility model discloses follow coupling stick 4 with the tip that 3 unions connect carries out the transmission of low frequency channel signal earlier towards its terminal direction, then carries out the transmission of high frequency channel signal again, realizes the transmission that is located the intermediate frequency channel signal between low frequency channel and the high frequency channel at last to can avoid the mutual interference between first frequency channel, second frequency channel and the third frequency channel, especially the interference of high frequency channel centering, low frequency channel signal, be favorable to improving the isolation of combiner port.

Please refer to fig. 1 and fig. 3a, a wave trap 8 is further disposed in the cavity, the wave trap 8 is connected to the coupling rod 4 through an inductor 81, so that the dc signal inputted to the coupling rod 4 through the common connector 3 is transmitted through the wave trap 8, and the bandwidth couplings of the coupling rod 4 and the first frequency resonant column 5, the second frequency resonant column 6 and the third frequency resonant column 7 are capacitive couplings, thereby avoiding the direct connection between the frequency resonant column and the coupling rod 4 from causing the grounding of the coupling rod 4, and ensuring the dc transmission performance of the combiner.

A lightning protection circuit board (not shown, the same applies below) is further arranged outside the cavity 1, and an inner core of the wave trap 8 is connected with the lightning protection circuit board so as to realize the lightning protection function of the combiner.

In addition, in this embodiment, the utility model discloses a combiner is equipped with at least three resonant cavity (not marking in the figure, same from beginning to end) corresponding to first frequency resonance post 5, second frequency resonance post 6 and third frequency resonance post 7, the resonant cavity by the cavity 1 the apron 2 and the frequency resonance post that corresponds constitute, and signal single joint 9 is equipped with three and one-to-one every at least the resonant cavity sets up.

Referring to fig. 1 and fig. 3a, a tuning screw 21 is disposed on the cover plate 2 corresponding to the frequency resonant column in the cavity, and the tuning screw 21 is connected to the cover plate 2 in a threaded manner, so as to adjust the length of the tuning screw 21 in the cavity by screwing, thereby adjusting the resonant frequency of the resonant cavity.

In the combiner of the utility model, the three-level ultra-wideband composite wide-mouth structure is arranged at the public joint 3 to realize the branching/combining of three frequency bands of a first frequency (698MHz-960MHz and a sub-band contained in the frequency band range), a second frequency band (1400MHz-2700MHz and a sub-band contained in the frequency band range) and a third frequency band (3300MHz-3800MHz and a sub-band contained in the frequency band range), the relative bandwidth of the signal single joint 9 can reach 63.4 percent, and the signal single joint covers a 5G new frequency band, is suitable for the development of 5G communication technology, can realize the branching/combining of the frequency bands of multi-band and ultra-wideband to achieve the co-construction of a 5G system and the existing 2G/3G/4G system, and simultaneously adopts a port structure of a hierarchical coupling technology, and has no interference or less interference among the broadband of each path outside the requirement of the total bandwidth is met, the method is favorable for improving the isolation of the port of the combiner, thereby reducing the condition of uneven bandwidth distribution.

In addition, in the combiner, the metal sleeve 41 corresponding to the first frequency band channel and the first frequency resonance column 5 can be welded in advance through welding of the lead 51, electroplated and then assembled, the welding spots of the port structure are reduced, so that the only welding spot in the whole port structure is welding between the inductor 81 and the coupling rod 4, the welding spots of the structure of the common joint 3 on the whole coupling rod 4 are fewer, and a lower passive intermodulation level can be realized.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The combiner comprises a cavity with a cavity and a public joint arranged at one end of the cavity, and is characterized in that: be close to in the cavity public joint's one side be equipped with first frequency resonance post, second frequency resonance post, third frequency resonance post and with the coupling stick that public joint connects, the cover is equipped with rather than coupled connection's metal covering on the coupling stick, first frequency resonance post pass through the wire with the metal covering is connected in order to transmit first frequency channel signal, be equipped with the coupling hole on the second frequency resonance post, the coupling stick is inserted and is located in the coupling hole and with the transmission of second frequency resonance post coupled connection in order to realize the second frequency channel signal, the third frequency resonance post is located one side of coupling stick and with the coupling stick coupled connection is in order to transmit the third frequency channel signal.

2. The combiner of claim 1, wherein: the first frequency band comprises 698MHz-960MHz, the second frequency band comprises 1400MHz-2700MHz, and the third frequency band comprises 3300MHz-3800 MHz.

3. The combiner of claim 1, wherein: and a medium ring for separating the coupling rod and the metal sleeve is arranged between the coupling rod and the metal sleeve.

4. The combiner of claim 3, wherein: and the outer wall of the coupling rod is provided with a limiting groove for accommodating the medium ring.

5. The combiner according to claim 1 or 3, characterized in that: an opening which penetrates through the public joint and is used for the insertion of the coupling rod is formed in the cavity, and a medium supporting block which extends along the radial direction of the coupling rod and is abutted against the inner wall of the opening is arranged on the coupling rod.

6. The combiner of claim 1, wherein: and the end part of the coupling rod inserted into the coupling hole is sleeved with an insulating medium piece which is abutted against the wall of the coupling hole.

7. The combiner of claim 1, wherein: the coupling area and distance of the third frequency resonance column and the coupling rod are defined in relation to a third frequency band bandwidth transmitted by the third frequency resonance column.

8. The combiner of claim 1, wherein: and a wave trap is further arranged in the cavity and is connected with the coupling rod through an inductor.

9. The combiner of claim 8, wherein: the outside lightning protection circuit board that is equipped with of cavity, the inner core of trapper with the lightning protection circuit board is connected.

10. The combiner of claim 1, wherein: at least three resonant cavities are arranged in the cavity corresponding to the first frequency resonant column, the second frequency resonant column and the third frequency resonant column, and signal single connectors corresponding to the resonant cavities one by one are arranged on one side, far away from the public connector, of the cavity.