CN202940315U - Broadband directional low-intermodulation attenuator - Google Patents
Broadband directional low-intermodulation attenuator Download PDFInfo
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- CN202940315U CN202940315U CN 201220642980 CN201220642980U CN202940315U CN 202940315 U CN202940315 U CN 202940315U CN 201220642980 CN201220642980 CN 201220642980 CN 201220642980 U CN201220642980 U CN 201220642980U CN 202940315 U CN202940315 U CN 202940315U
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- Prior art keywords
- intermodulation
- low
- attenuator
- low intermodulation
- coupler
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Abstract
The utility model discloses a broadband directional low-intermodulation attenuator which is composed of a three-port low-intermodulation coupler and a low-intermodulation load, wherein the low-intermodulation load is connected to a direct-through output end of the three-port coupler. The broadband directional low-intermodulation attenuator is simple in structure and convenient to manufacture, all that is needed is to connect the low-intermodulation load to the direct-through output end of the three-port low-intermodulation coupler to share the power, the attenuator has stable intermodulation performance, and the intermodulation value can reach below minus 150dBc.
Description
Technical field
The utility model relates to a kind of communication attenuator, specifically the directed low intermodulation attenuator of a kind of wideband.
Background technology
Along with the development of short-wave communication tedhnology, people are to broadband, and the passive device demand of low intermodulation increases day by day, and wherein low intermodulation attenuator is because it is applied widely, and demand is more urgent.Attenuator is used for microwave system, is that two ports have the consumption microwave network, and its effect is with the rear output that decays by a certain percentage of one road microwave power.The stock of existing formation frequency microwave power attenuator is the resistor-type material, by certain technique, resistance material is placed into the attenuator that has just formed corresponding frequencies in the radio frequency structure of different-waveband.Because the resistance in attenuator is that some metal oxides are synthetic, impurity is contained in inside, and when the end input of microwave from attenuator, an other end output can produce intermodulation distortion, especially reflects the non-constant of intermodulation.
The utility model content
The technical problems to be solved in the utility model is to provide the directed low intermodulation attenuator of a kind of wideband, solves the low intermodulation attenuator intermodulation distortion of existing resistor-type, the unsettled problem of intermodulation performance.
The technical solution of the utility model is:
The directed low intermodulation attenuator of a kind of wideband, it is comprised of the low intermodulation coupler of three ports and low intermodulation load, and described low intermodulation load is connected in the straight-through output of three port coupler.
Described low intermodulation load directly is screwed together in the straight-through output of three port coupler or is connected in the straight-through output of three port coupler by low intermodulation wire jumper.
The degree of decay of the present utility model realizes by the degree of coupling of low intermodulation coupler.
The low intermodulation of coupler and the low intermodulation of load are two necessary conditions that low intermodulation attenuator is produced.
Described low intermodulation load selects the power capacity size to depend on the load power size of required attenuator and the size of the degree of coupling.
Advantage of the present utility model: the utility model adopts assembles the directed low intermodulation attenuator of formation wideband with three port coupler and low intermodulation load, distribute power by the coupling between the coupler metallic inner conductor, and a part of power that wherein branches away is shared energy transform into heat energy by low intermodulation load and is come out, namely there is not the problem of the intermodulation distortion that resistance decrement power causes, and intermodulation performance is stable, the third order intermodulation value reaches-and below 150dBc.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Embodiment
Embodiment
See Fig. 1,100W 20dB 700-3000MHZ hangs down intermodulation attenuator:
the working frequency range that is comprised of the low intermodulation load 2 of three port coupler 1 and 100W is at 700-3000MHz, the degree of decay is the directed low intermodulation attenuator of the wideband of 20dB, wherein, the input 3 of three port coupler 1 and coupled end 4 are respectively as directed power input and the output that hangs down intermodulation attenuator of wideband, connect the low intermodulation load 2 of 100W on its straight-through output 5, by test, the intermodulation value of low intermodulation coupler and low intermodulation load can reach-below 160dBc, the low intermodulation attenuator intermodulation value that both make can reach-below 155dBc, can reach the required low intermodulation index request of at present low intermodulation decay.
See Fig. 2,100W 30dB 700-3800MHZ hangs down intermodulation attenuator:
the working frequency range that is comprised of the low intermodulation load 2 of three port coupler 1 and 100W is at 700-3800MHz, the degree of decay is the broadband low-intermodulation attenuator of 30dB, wherein, the input 3 of three port coupler 1 and coupled end 4 respectively as the directed low intermodulation attenuator of wideband power input and output, its straight-through output 5 connects low intermodulation load 2 by low intermodulation wire jumper 6, by testing low intermodulation coupler, low intermodulation load, the intermodulation value of low intermodulation wire jumper all can reach-below 160dBc, the low intermodulation attenuator intermodulation value that the three be connected to produce can reach-below 155dBc, can reach the required low intermodulation index request of at present low intermodulation decay.
Claims (2)
1. a wideband orientation is hanged down intermodulation attenuator, and it is characterized in that: it is comprised of low intermodulation three port coupler and low intermodulation load, and described low intermodulation load is connected in the straight-through output of the low intermodulation coupler of three ports.
2. a kind of wideband orientation according to claim 1 is hanged down intermodulation attenuator, it is characterized in that: described low intermodulation load directly is screwed together and is connected in the straight-through output of the low intermodulation coupler of three ports or by low intermodulation wire jumper the straight-through output that three ports hang down the intermodulation coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642980 CN202940315U (en) | 2012-11-29 | 2012-11-29 | Broadband directional low-intermodulation attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642980 CN202940315U (en) | 2012-11-29 | 2012-11-29 | Broadband directional low-intermodulation attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940315U true CN202940315U (en) | 2013-05-15 |
Family
ID=48324538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642980 Expired - Fee Related CN202940315U (en) | 2012-11-29 | 2012-11-29 | Broadband directional low-intermodulation attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552497A (en) * | 2015-12-30 | 2016-05-04 | 安徽蓝麦通信科技有限公司 | Space coupling low-intermodulation attenuator |
-
2012
- 2012-11-29 CN CN 201220642980 patent/CN202940315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552497A (en) * | 2015-12-30 | 2016-05-04 | 安徽蓝麦通信科技有限公司 | Space coupling low-intermodulation attenuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20211129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |