CN207098028U - A kind of low intermodulation load - Google Patents
A kind of low intermodulation load Download PDFInfo
- Publication number
- CN207098028U CN207098028U CN201720577544.3U CN201720577544U CN207098028U CN 207098028 U CN207098028 U CN 207098028U CN 201720577544 U CN201720577544 U CN 201720577544U CN 207098028 U CN207098028 U CN 207098028U
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- CN
- China
- Prior art keywords
- wire spool
- load
- cable
- heat
- dissipating casing
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- Expired - Fee Related
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Abstract
The utility model provides a kind of low intermodulation load, including the heat-dissipating casing and wire spool being located in the heat-dissipating casing, earthing block and load resistance, the heat-dissipating casing is provided with load connector, cable is wound with the wire spool, one end of the cable connects the load connector, the other end of the cable connects the load resistance, and the earthing block is located on the cable between the wire spool and the load resistance.The utility model has good cable grounding effect, and intermodulation performance is high, and reaches conductive optimum efficiency.
Description
Technical field
The utility model belongs to payload communication technical field, and in particular to a kind of low intermodulation load.
Background technology
In mobile communication indoor distribution system, passive device in equipment in material property and the deficiency of manufacturing process,
And each improper caused nonlinear interaction of equipment room connection, so as to trigger passive intermodulation interference signal, system descending is received
Frequency range has an impact.
Load is microwave passive single port device, the branch node being widely used in compartment system extension link or inspection
The terminating of measuring point mouth, absorption and matching as power in microwave telecommunication system equipment.With constantly building for mobile communications network
If with development, construction the becoming increasingly complex of scene of mobile communication compartment system and variation, in order to save Resources for construction, or
In order to meet under adverse circumstances the construction of (outdoor high tower, basement etc.), the passive device of compartment system link composition
Water resistance increasingly cause the attention of each side so that water proof type passive device enters widespread adoption.
The load of existing main flow, using built-in beryllium oxide material absorbing load and fin, the resistance chip be designed to it is ripe, compared with
More applies in existing communication distributed coverage system, but due to using the magnetic materials such as thick-film resistor, its passive intermodulation index
With very big randomness, mutual tone pitch be can be only sustained between -110dBc~-130dBc, and power is influenceed by absorbing load power,
It is difficult to meet the high request usage scenario of multi-standard mixing at this stage.
Because of the complication of communication network, cause performance more and more higher of the market to intermodulation.In existing load production process
The intermodulation percent of pass of load is relatively low, can only be grounded by 4 screws of joint, and cable below needs the screen layer by cable
Reach the effect of ground connection with wire spool contact, earthing effect is not especially good, influences intermodulation percent of pass.
Utility model content
The purpose of this utility model is to provide a kind of low intermodulation load, has good cable grounding effect, intermodulation performance
Height, and reach conductive optimum efficiency.
The utility model provides following technical scheme：
A kind of low intermodulation load, including heat-dissipating casing and the wire spool, the earthing block and negative that are located in the heat-dissipating casing
Resistance is carried, the heat-dissipating casing is provided with load connector, and cable is wound with the wire spool, and one end of the cable connects
Connect the load connector, the other end of the cable connects the load resistance, the earthing block be located at the wire spool and
On cable between the load resistance.
Preferably, the wire spool includes wire spool base, is provided between the wire spool base and the heat-dissipating casing
Some fixed screws, the wire spool base are fixed in the heat-dissipating casing by the fixed screw, the wire spool bottom
Seat is provided with wrapping post, and the cable is wrapped on the wrapping post.
Preferably, two grounding screw holes are arranged with the earthing block, is respectively equipped with and connects in the grounding screw hole
Pseudobulbus Bletillae (Rhizoma Bletillae), the earthing block are fixed on the wire spool base by the grounding screw, improve cable grounding effect.
Preferably, threading hole is additionally provided with the earthing block, the cable is passed through by the threading hole and is connected to institute
Load resistance is stated, improves earthing effect.
Preferably, the load resistance is screwed on the wire spool base, is kept relative position, is made load
With good intermodulation performance.
Preferably, some equally distributed fin, the heat sinking function of proof load are additionally provided with the heat-dissipating casing.
Preferably, the earthing block uses copper material, and the surface of the earthing block is provided with silver coating, makes earthing block is convenient to weld
And reach conductive optimum efficiency.
The beneficial effects of the utility model are：Using fixed wire spool and the support structures of heat-dissipating casing design, mutual tonality
It can reach below -163dBc, and produce percent of pass height, reduce the production cost of enterprise；Designed, improved using earthing block
The earthing effect of cable；The earthing block of copper material, and silver-plated process is carried out, conveniently weld and reach conductive optimum efficiency.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the utility model structure diagram；
Fig. 2 is earthing block structural representation of the present utility model；
Fig. 3 is the utility model external structure schematic diagram；
In figure mark for：1. heat-dissipating casing；11. fin；2. wire spool；21. wire spool base；22. fixed screw；
3. load connector；4. cable；5. earthing block；51. grounding screw；511. grounding screw holes；52. threading hole；6. load resistance.
Embodiment
As shown in figure 1, a kind of low intermodulation load, including heat-dissipating casing 1 and be located in heat-dissipating casing wire spool 2, connect
Plot 5 and load resistance 6, heat-dissipating casing 1 are provided with load connector 3, are wound with cable 4 on wire spool 2, and the one of cable 4
End connection load connector 3, the other end connection load resistance 6 of cable 4, earthing block 5 be located at wire spool 2 and load resistance 6 it
Between cable 4 on.Wire spool 2 includes wire spool base 21, and diagonal four are provided between wire spool base 21 and heat-dissipating casing 1
Fixed screw 22, wire spool base 21 are fixed on inside heat-dissipating casing 1 by fixed screw 22, wire spool base 21 be provided with around
Terminal, cable 4 are wrapped on wrapping post.Further, load resistance 6 is screwed on wire spool base 21, is protected
Relative position is held, makes load that there is good intermodulation performance.
As depicted in figs. 1 and 2, two grounding screw holes 511 are arranged with earthing block 5, grounding screw hole 511 is interior respectively
Provided with grounding screw 51, earthing block 5 is fixed on wire spool base 21 by grounding screw 51, improves cable grounding effect.Connect
Threading hole 52 is additionally provided with plot 5, cable 4, through load resistance 6 is connected to, improves earthing effect by threading hole 52.Connect
Plot 5 uses copper material, and the surface of earthing block 5 is provided with silver coating, earthing block 5 is conveniently welded and reaches conductive optimum efficiency.
As shown in figure 3, some equally distributed fin 11, the heat sinking function of proof load are additionally provided with heat-dissipating casing 1.
As shown in Figure 1-Figure 3, the intermodulation percent of pass loaded in existing load production process is relatively low, can only pass through joint
Four screws ground connection, cable below needs to contact to reach the effect of ground connection by the screen layer and wire spool of cable, connects
Ground effect is not especially good, influences intermodulation percent of pass.In order to allow improve cable earthing effect, using the earthing block of copper material, and
And silver-plated process is carried out, conveniently weld and reach conductive optimum efficiency, intermodulation performance can reach below -163dBc, improve
The intermodulation performance and standing wave value of load, and percent of pass height is produced, reduce the production cost of enterprise.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, although ginseng
The utility model is described in detail according to previous embodiment, for those skilled in the art, it still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic.It is all
Within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc., this practicality should be included in
Within new protection domain.
Claims (7)
1. a kind of low intermodulation load, it is characterised in that including heat-dissipating casing and the wire spool being located in the heat-dissipating casing, connect
Plot and load resistance, the heat-dissipating casing are provided with load connector, cable, the cable are wound with the wire spool
One end connect the load connector, the other end of the cable connects the load resistance, and the earthing block is located at described
On cable between wire spool and the load resistance.
A kind of 2. low intermodulation load according to claim 1, it is characterised in that the wire spool includes wire spool base,
Some fixed screws are provided between the wire spool base and the heat-dissipating casing, the wire spool base passes through the fixed spiral shell
Silk is fixed in the heat-dissipating casing, and the wire spool base is provided with wrapping post, and the cable is wrapped in the wrapping post
On.
3. a kind of low intermodulation load according to claim 2, it is characterised in that two are arranged with the earthing block and is connect
Pseudobulbus Bletillae (Rhizoma Bletillae) hole, grounding screw is respectively equipped with the grounding screw hole, the earthing block is fixed on institute by the grounding screw
State on wire spool base.
A kind of 4. low intermodulation load according to claim 1, it is characterised in that threading hole is additionally provided with the earthing block,
The cable is passed through by the threading hole and is connected to the load resistance.
5. a kind of low intermodulation load according to claim 2, it is characterised in that the load resistance is screwed in
On the wire spool base.
6. a kind of low intermodulation load according to claim 1, it is characterised in that be additionally provided with the heat-dissipating casing some equal
The fin of even distribution.
7. a kind of low intermodulation load according to claim 1, it is characterised in that the earthing block uses copper material, described to connect
The surface in plot is provided with silver coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720577544.3U CN207098028U (en) | 2017-05-23 | 2017-05-23 | A kind of low intermodulation load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720577544.3U CN207098028U (en) | 2017-05-23 | 2017-05-23 | A kind of low intermodulation load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098028U true CN207098028U (en) | 2018-03-13 |
Family
ID=61551103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720577544.3U Expired - Fee Related CN207098028U (en) | 2017-05-23 | 2017-05-23 | A kind of low intermodulation load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207098028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597803A (en) * | 2018-06-01 | 2018-09-28 | 安徽禄讯电子科技有限公司 | A kind of low intermodulation coil load |
| CN108808196A (en) * | 2018-06-01 | 2018-11-13 | 安徽禄讯电子科技有限公司 | A kind of low intermodulation Two In and One Out electric bridge |
-
2017
- 2017-05-23 CN CN201720577544.3U patent/CN207098028U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597803A (en) * | 2018-06-01 | 2018-09-28 | 安徽禄讯电子科技有限公司 | A kind of low intermodulation coil load |
| CN108808196A (en) * | 2018-06-01 | 2018-11-13 | 安徽禄讯电子科技有限公司 | A kind of low intermodulation Two In and One Out electric bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20190523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |