CN203278812U - RF filtering structure member - Google Patents
RF filtering structure member Download PDFInfo
- Publication number
- CN203278812U CN203278812U CN2013202819297U CN201320281929U CN203278812U CN 203278812 U CN203278812 U CN 203278812U CN 2013202819297 U CN2013202819297 U CN 2013202819297U CN 201320281929 U CN201320281929 U CN 201320281929U CN 203278812 U CN203278812 U CN 203278812U
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- structural member
- duplexer
- power amplifier
- screening cover
- plate
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Abstract
The invention provides an RF filtering structure member which comprises an upper box body, a lower box body, a power amplifier circuit board and a transceiver circuit board. The upper box body comprises a shielding cover and a radiation fin which extends from the shielding cover. The shielding cover and the radiation fin are formed through integrated casting. The lower box body is formed through the integrated casting of a power amplifier radiator and a duplexer. The lower box body is provided with an upper surface close to the upper box body, and a groove arranged at the upper surface corresponding to the position of the duplexer. According to the RF filtering structure member, the power amplifier radiator and the duplexer are formed through the integrated casting, functions of installation, shielding and heat radiation of the power amplifier circuit board and the transceiver circuit board are completed, thus the number of structure members is reduced, the module thickness space is saved, the heat radiation performance of a unit volume is raised, and the purposes of simplifying structure assembly process and reducing module manufacture and processing cost are achieved.
Description
Technical field
The utility model relates to a kind of communication field, relates in particular to a kind of volume compact, rf filtering structural member that heat dispersion is good.
Background technology
Rf filtering unit/remote radio unit (RRU) (Radio Filter Unit/Remote Radio Unite RFU/RRU) is important composition unit and the key function module of wireless mobile base station system, is responsible for eat dishes without rice or wine reception, emission and the passage of signal of radio frequency and processes in wireless communication base station system.Wherein, RFU is the part of indoor macro base station, the functions such as the intermediate frequency process of main settling signal (as digital I/Q modulation /demodulation, Up/Down Conversion, DA/AD conversion), radio frequency processing, duplex; RRU is the part of outdoor distributed base station, and built-in function and RFU are basic identical.
At present, along with development and the demand of communication system technology, require the peak power output of individual module more and more higher, cost is more and more lower, and the RFU volume must adapt to the size of existing rack, and RRU faces stronger miniaturization requirement.
As shown in Figure 1, the structural member in rf filtering unit R FU mainly comprises four parts: duplexer 1, PA (Power Amplifier, power amplifier) radiator 2, PA plate 3, TRX plate (Transceiver, transceiver) 4 and screening cover 6.Wherein, TRX plate 4 and PA plate 3 adopt two plate co-planar designs, and between plate, cabling adopts the welded type wire jumper, realize that by hard connection of screw signal is interconnected between TRX plate 4 and PA plate 3 and duplexer 1.
Wherein, PA plate 3 fits tightly by sintered aluminium substrate or copper base and PA radiator 2 and dispels the heat, the PCB of TRX plate 4 (print Circuit board, printed circuit board (PCB)) being adjacent to the extended dorsalis medullae spinalis extension base 5 of PA radiator 2 bottom takes heat out of, part is by the device of top heat dissipation, pastes heat conductive pad and screening cover 6 at its top and fits tightly and carry out auxiliary heat dissipation.Compress by some glue muscle on screening cover 6 between the difference in functionality circuit on TRX plate 4 and isolate.
Inventor of the present utility model finds: because the dorsalis medullae spinalis extension base 5 of PA radiator 2 need to carry following function simultaneously:
(1), PCB, the screening cover 6 of duplexer 2 and TRX plate 4 are installed; Particularly, first by the M4 screw, duplexer 1 and PA radiator 2 are fixed together, then both turn with this, by the M3 screw, the PCB of TRX plate 4 is fixed on dorsalis medullae spinalis extension base 5.
(2), fastening screening cover 6;
Trip bolt need to pass PCB, gets on dorsalis medullae spinalis extension base 5, guarantees that screening cover 6 and PCB compress.
(3), auxiliary PCB heat radiation; The heat of PCB bottom is transmitted on the fin of PA radiator 2 by dorsalis medullae spinalis extension base 5, relends and helps cabinet fan that heat is taken away.
Because the dorsalis medullae spinalis extension base 5 of PA radiator 2 need to carry above function simultaneously, this will bring following defective to such scheme:
(1), more than the average thickness of dorsalis medullae spinalis extension base 5 needs to guarantee 6mm at least, just can guarantee the tightness of mounting screw and shielding screw, this will cause the increase of the waste in module thickness space and structural member weight, cost;
(2), need to reserve a large amount of screw hole positions on the PCB of TRX plate 4, and need dodge these via holes and screw gasket during placement-and-routing, cause the waste of PCB area;
(3), the PCB radiating effect of TRX plate 4 is limited; Due to close contact not between duplexer 1 and dorsalis medullae spinalis extension base 5, and duplexer 1 inside is the metal-air chamber, therefore the heat that PCB takes away by duplexer 1 is extremely limited; Particularly, dorsalis medullae spinalis extension base 5 is first passed in the caloric requirement of PCB, more laterally passes to PA radiator 2, and PA radiator 2 is mainly used in the power amplifier heat radiation, and the power amplifier regional temperature is higher than the TRX zone, so the conduction of the heat of the PCB of 5 pairs of TRX plates 4 of dorsalis medullae spinalis extension base is extremely limited; And between screening cover 6 and PCB contact area seldom, also very little to the contribution of the heat dispersion of whole module, cause the radiating efficiency of whole module lower.
In sum, under the certain condition of each art ability, system architecture design to RFU/RRU is also had higher requirement, and how maximum challenge is the radiating efficiency of hoisting module unit volume, the inner space utilance of hoisting module how, adapting to more high power, more small size, growth requirement more cheaply of future, yet the system architecture design of present RFU/RRU is difficult to adapt to high request.
The utility model content
The utility model provides a kind of volume compact, rf filtering structural member that heat dispersion is good, the technical problem that exists in order to solve existing RFU/RRU system.
On the one hand, provide a kind of rf filtering structural member:
Described rf filtering structural member comprises:
Upper box, described upper box comprise screening cover and the fin that is extended out by screening cover, and described screening cover and described fin integrated die-casting form;
Lower box, described lower box is formed by power amplifier radiator and duplexer integrated die-casting, and described lower box has one and presses close to the upper surface of described upper box and be opened in groove on the upper surface corresponding with described duplexer position;
The power amplifier circuit plate, it is arranged on the upper surface corresponding with described heat sink location; And
The transceiver circuitry plate, it is arranged on the upper surface corresponding with described duplexer position, described transceiver circuitry plate has the first surface that fits with described upper surface and reaches the second surface opposing with first surface, the first element that is housed in described groove is set on described first surface, the second element is set on described second surface, and described second surface has the zone that fits with described screening cover.
In the possible implementation of the first, further comprise the first securing member, described the first securing member passes described screening cover and described power amplifier circuit plate, with described screening cover and the described power amplifier radiator of being connected.Described the first securing member is the M3 screw.
In the possible implementation of the second, further comprise the second securing member, described the second securing member passes described screening cover and described transceiver circuitry plate, with described screening cover and the described duplexer of being connected.Described the second securing member is the M4 screw.
In conjunction with the possible implementation of above-mentioned the second, in the third possible implementation, further comprise the shielding muscle that the upper surface by described duplexer extends out, described the second securing member is locked on described shielding muscle.
In the 4th kind of possible implementation, power amplifier is connected by wire jumper with transceiver.
In the 5th kind of possible implementation, described the first element is radio-frequency devices, and described the second element is the intermediate frequency device.
In conjunction with above-mentioned the 5th kind of possible implementation, in the 6th kind of possible implementation, described the second element fits tightly by flexible heat-conducting medium material and described screening cover.
In conjunction with the possible implementation of above-mentioned the second, in the 7th kind of possible implementation, the stepped distribution of described screening cover, comprise first stepped plate, a second-order gangboard and the 3rd stepped plate, described second-order gangboard is between described the first stepped plate and described the 3rd stepped plate, and described fin is extended out by the same side of described first, second and third stepped plate.
In conjunction with above-mentioned the 7th kind of possible implementation, in the 8th kind of possible implementation, described power amplifier circuit plate and described the first stepped plate are separated by and are formed a cavity.
In conjunction with above-mentioned the 7th kind of possible implementation, in the 9th kind of possible implementation, described second-order gangboard extends a boss towards a side of contiguous described second surface, the subregion of the described second surface of described boss applying.
In conjunction with above-mentioned the 7th kind of possible implementation, in the tenth kind of possible implementation, described shielding muscle is arranged between described the 3rd stepped plate and described transceiver circuitry plate.
In conjunction with above-mentioned the 7th kind of possible implementation, in the 11 kind of possible implementation, described power amplifier radiator comprises a substrate and a plurality of fin that is vertically extended by this substrate, and described substrate is extended out by a side of described duplexer.
With respect to prior art, power amplifier radiator and duplexer that described rf filtering structural member forms by integrated die casting, complete the functions such as power amplifier circuit plate and the installation of transceiver circuitry plate, shielding, heat radiation, reduce structural member quantity thereby reach, saving module thickness space, promote the heat dispersion of unit volume, also reach the simplified structure assembly process simultaneously, reduce the purpose that module is made processing cost.
Description of drawings
In order to be illustrated more clearly in the technical solution of the utility model, the below will do to introduce simply to the accompanying drawing of required use in execution mode, apparently, accompanying drawing in the following describes is only execution modes more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the rf filtering structural member that provides of prior art;
Fig. 2 is the structural representation of the rf filtering structural member that provides of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 2, the utility model embodiment provides a kind of rf filtering structural member 100, and it comprises a upper box 10, lower box 20,30 and transceiver circuitry plates of a power amplifier circuit plate (PA circuit board) (TRX circuit board) 40.
The present embodiment, described upper box 10 comprises screening cover 11 and fin 12.The stepped distribution in the side of described screening cover 11 comprises first stepped plate 111, a second-order gangboard 112 and the 3rd stepped plate 113, and described second-order gangboard 112 is between described the first stepped plate 111 and described the 3rd stepped plate 113.Described fin 12 is extended out by a side of described screening cover 11, particularly, described fin 12 is extended out by described first, second and third stepped plate 111, the same side of 112,113, and the bearing of trend of described fin 12 and described first, second and third stepped plate 111,112,113 substantially perpendicular.During making, described screening cover 11 forms with described fin 12 integrated die-castings.
Described lower box 20 comprises power amplifier radiator (PA radiator) 21 and duplexer (DUP) 22.During making, described PA radiator 21 forms with described duplexer 22 integrated die-castings.In the present embodiment, the left side of described lower box 20 is PA radiator 21, and the right side is duplexer 22.Described PA radiator 21 comprises a substrate 211 and a plurality of fin 222 that is vertically extended by this substrate 211, and described substrate 211 is extended out by the side of described duplexer 22 to left-hand.
Described lower box 20 has a upper surface 10A who presses close to described upper box 10, and described duplexer 22 is offered a groove 10B on surperficial 10A thereon.
Described PA circuit board 30 is arranged on upper surface 10A with described substrate 211, and separated by a distance with described the first stepped plate 111, namely forms a cavity 10C between described PA circuit board 30 and described the first stepped plate 111.In the present embodiment, described PA circuit board 30 arranges power amplifier (not shown) and other components and parts, and the components and parts that arrange on described PA circuit board 30 are housed in described cavity 10C.
Described TRX circuit board 40 is arranged on the upper surface 10A corresponding with described duplexer 22 positions, and it can arrange transceiver (not shown) or other components and parts.In the present embodiment, described PA circuit board 30 and described TRX circuit board 40 can be respectively a PCB (printed circuit board (PCB)) plate, with saving, the space are set.
Described TRX circuit board 40 have the first surface 40A that fits with described upper surface 10A and with the opposing second surface 40B of first surface 40A.Upper the first element 50 that is housed in described groove 10B that arranges of described first surface 40A arranges the second element 60 on described second surface 40B.In the present embodiment, described second surface 40B has the regional 40C that fits with described screening cover 11, conveniently to dispel the heat, particularly, described second-order gangboard 112 extends a boss 1120 towards the side of contiguous described second surface 40B, the regional 40C of the described boss 1120 described second surface 40B of applying.In the present embodiment, when described boss 1120 fitted with described TRX circuit board 40, described TRX circuit board 40 formed interval 115 with described second-order gangboard 112.Described the first element 50 is radio-frequency devices; Described the second element 60 is the intermediate frequency device.Described the second element 60 is housed in the interval 115 that forms between described TRX circuit board 40 and described second-order gangboard 112, and fits tightly by flexible heat-conducting medium material and described second-order gangboard 112.
The present embodiment, described rf filtering structural member 100 further comprise the first securing member 70 and the second securing member 80.In addition, also further comprise the shielding muscle 90 that the upper surface 10A by described duplexer 22 extends out, described shielding muscle 90 tapping holes, in the present embodiment, described shielding muscle 90 can for example be arranged between described the 3rd stepped plate 113 and described TRX circuit board 40.Particularly, described the first securing member 70 is the M3 screw; Described the second securing member 80 is the M4 screw.During installation, described the first securing member 70 passes described screening cover 11 (for example the first stepped plate 111) and described PA circuit board 30, with described screening cover 11 and the described PA circuit board 30 of being connected; Described the second securing member 80 passes described screening cover 11 (for example the 3rd stepped plate 113) and described TRX circuit board 40, with described screening cover 11 and the described duplexer 22 of being connected.In the present embodiment, described the second securing member 80 is locked on the screw hole of described shielding muscle 90.In addition, described power amplifier is connected by the wire jumper (not shown) with transceiver, certainly, its with other connected mode can be arranged, be not limited to specific embodiment.
Compared with prior art, described rf filtering structural member 100 has the following advantages:
The first, PA radiator 21 and duplexer (DUP) 22 integrated die casting, can reduce installation procedure, deduction and exemption fit tolerance, thereby hoisting module shielding properties on the whole;
The second, utilize duplexer 22 as the screening cover of transceiver (TRX), can at utmost utilize duplexer 22 self structure, reduce number of structures and kind, manufacturing processing and the assembly cost of reduction module;
Three, by rational architecture design, the main heat of power amplifier and transceiver (TRX) is derived by upper and lower casing 10,20 respectively, inside modules space service efficiency and heat-sinking capability have been promoted, help the higher power requirements of RFU (RRU) challenge, or with challenge under equal-specification less size and weight.Particularly, the heat of power amplifier is derived through the radiator 21 of lower box 20 mainly by PA circuit board 30 bottoms, and a small amount of heat of head-on radiation or conduction can be derived by the screening cover 11 of upper box 10; Transceiver (TRX) adopts two-sided layout, radio-frequency devices 50 component sides down, heat is from TRX circuit board 40 tops, derive through upper box 10, intermediate frequency device 60 is arranged on TRX circuit board 40 tops, absorbs tolerances by the flexible heat-conducting medium materials in intermediate frequency device 60 tops, fin 12 close contacts of assurance and upper box 10, in addition, be unkitted the regional 40C close contact of components and parts on upper box 10 and TRX circuit board 40, also helping derives the heat of TRX circuit board 40.Further, due to duplexer 22 and the integrated die cast of PA radiator 21, thereby and between PA circuit board 30 and TRX circuit board 40 contact tightr, the heat conduction of PA circuit board 30 and TRX circuit board 40 is also had certain booster action.
Four, the shielding muscle 90 that extends out of the upper surface 10A by duplexer 22, and TRX circuit board 40 is installed in the tapping hole on shielding muscle 90, thereby do not need by mounting screw being got on the inner muscle of duplexer 22, can avoid the screw layout to the restriction of duplexer 22 cavity design, and the impact of malformation on duplexer 22 self performance after assembling; Thus, duplexer 22 indoor designs and 40 designs of TRX circuit board improve design flexibility and the degree of freedom without coupling, are conducive to develop the tandem product of different frequency range, standard equal-specification under the unified platform.
In practical application, described rf filtering structural member 100 is applicable to the design of rf filtering unit R FU, and it also is applicable to the design of other radio-frequency modules certainly, and the design as outdoor RRU module is not limited to specific embodiment.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (15)
1. rf filtering structural member, described rf filtering structural member comprises:
Upper box, described upper box comprise screening cover and the fin that is extended out by screening cover, and described screening cover and described fin integrated die-casting form;
Lower box, described lower box is formed by power amplifier radiator and duplexer integrated die-casting, and described lower box has one and presses close to the upper surface of described upper box and be opened in groove on the upper surface corresponding with described duplexer position;
The power amplifier circuit plate, it is arranged on the upper surface corresponding with described heat sink location; And
The transceiver circuitry plate, it is arranged on the upper surface corresponding with described duplexer position, described transceiver circuitry plate has the first surface that fits with described upper surface and reaches the second surface opposing with first surface, the first element that is housed in described groove is set on described first surface, the second element is set on described second surface, and described second surface has the zone that fits with described screening cover.
2. rf filtering structural member as claimed in claim 1, is characterized in that, further comprises the first securing member, and described the first securing member passes described screening cover and described power amplifier circuit plate, with described screening cover and the described power amplifier radiator of being connected.
3. rf filtering structural member as claimed in claim 2, is characterized in that, described the first securing member is the M3 screw.
4. rf filtering structural member as claimed in claim 1, is characterized in that, further comprises the second securing member, and described the second securing member passes described screening cover and described transceiver circuitry plate, with described screening cover and the described duplexer of being connected.
5. rf filtering structural member as claimed in claim 4, is characterized in that, described the second securing member is the M4 screw.
6. rf filtering structural member as claimed in claim 4, is characterized in that, further comprises the shielding muscle that the upper surface by described duplexer extends out, and described the second securing member is locked on described shielding muscle.
7. rf filtering structural member as claimed in claim 1, is characterized in that, power amplifier is connected by wire jumper with transceiver.
8. rf filtering structural member as claimed in claim 1, is characterized in that, described the first element is radio-frequency devices.
9. rf filtering structural member as claimed in claim 1, is characterized in that, described the second element is the intermediate frequency device.
10. rf filtering structural member as claimed in claim 9, is characterized in that, described the second element fits tightly by flexible heat-conducting medium material and described screening cover.
11. rf filtering structural member as claimed in claim 6, it is characterized in that, the stepped distribution of described screening cover, comprise first stepped plate, a second-order gangboard and the 3rd stepped plate, described second-order gangboard is between described the first stepped plate and described the 3rd stepped plate, and described fin is extended out by the same side of described first, second and third stepped plate.
12. rf filtering structural member as claimed in claim 11 is characterized in that, described power amplifier circuit plate and described the first stepped plate are separated by and are formed a cavity.
13. rf filtering structural member as claimed in claim 11 is characterized in that, described second-order gangboard extends a boss towards a side of contiguous described second surface, the subregion of the described second surface of described boss applying.
14. rf filtering structural member as claimed in claim 11 is characterized in that, described shielding muscle is arranged between described the 3rd stepped plate and described transceiver circuitry plate.
15. rf filtering structural member as claimed in claim 11 is characterized in that, described power amplifier radiator comprises a substrate and a plurality of fin that is vertically extended by this substrate, and described substrate is extended out by a side of described duplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202819297U CN203278812U (en) | 2013-05-22 | 2013-05-22 | RF filtering structure member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202819297U CN203278812U (en) | 2013-05-22 | 2013-05-22 | RF filtering structure member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278812U true CN203278812U (en) | 2013-11-06 |
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ID=49509133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202819297U Expired - Lifetime CN203278812U (en) | 2013-05-22 | 2013-05-22 | RF filtering structure member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087973A1 (en) * | 2021-11-16 | 2023-05-25 | 中兴通讯股份有限公司 | Power amplifier structure, active antenna unit, and 5g base station |
-
2013
- 2013-05-22 CN CN2013202819297U patent/CN203278812U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087973A1 (en) * | 2021-11-16 | 2023-05-25 | 中兴通讯股份有限公司 | Power amplifier structure, active antenna unit, and 5g base station |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |