CN101064402B - Low intermodulation RF coaxial connector - Google Patents
Low intermodulation RF coaxial connector Download PDFInfo
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- CN101064402B CN101064402B CN2006100262353A CN200610026235A CN101064402B CN 101064402 B CN101064402 B CN 101064402B CN 2006100262353 A CN2006100262353 A CN 2006100262353A CN 200610026235 A CN200610026235 A CN 200610026235A CN 101064402 B CN101064402 B CN 101064402B
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Abstract
The invention relates to the field of cable connector, which is use to solve the technical problem to provide low intermodulation radio frequency coaxial connector. The material of inner and outer positive connector is antimagnetic brass; the material of conductor of negative connector is beryllium copper or tin bronze; the material of connector of conductor of negative connector is antimagnetic brass, and the material of connector of conductor of positive connector is antimagnetic brass; the plating coats of outer conductor metal part of negative positive connector are copperized silverplating plating ternary alloy, and the plating coats of inner conductor metal part of negative positive connector are silverplating, and the component of said ternary alloy, copper: 50%-65%, tin: 30-45%, zinc: 5-10%. The invention can improve the three-level intermodulation property of product, and when the radio frequency coaxial connector matches with corresponding radio frequency coaxial cable, the single channel communication system can have great physical property and electricity property, and it with low intermodulation index can used in multi-channels communication system.
Description
Technical field:
The present invention relates to the cable connector field, relate in particular to a kind of radio frequency (RF) coaxial connector.
Background technology:
Radio frequency (RF) coaxial connector is to be used in the loop of rf of military equipment and radio electronics instrument, plays a part to connect coaxial cable or electronic equipment and transmit electric property, and be indispensable device in the loop of rf.
As shown in Figure 1, the radio frequency (RF) coaxial connector that one cover is complete is made of jointly male connector 10 and female connector 20, male connector 10 is corresponding mutually with the structure of female connector 20, between the inner and outer conductor of male connector and the inner and outer conductor of female connector mutually close-coupled to realize reliable electrical contact, the inner wire of male connector is generally contact pin type, and the inner wire of female connector is generally the elastic hole that beryllium-bronze or tin bronze process.
Development along with telecommunications, single channel communication system has not originally satisfied the requirement of communication, binary channels or multichannel communication have at home and abroad grown up widely, and communicating by letter with single channel different is: the radio frequency (RF) coaxial connector that is used for binary channels or multi-channel communication systems has an important third order intermodulation performance index.That is: in Wireless Telecom Equipment, non-linear can the making usually of device invaded 2 or a plurality of high reject signal generation phase inter-modulation simultaneously, and produces new frequency content, and this phenomenon is called intermodulation.Intermodulation Interference can not only reduce the power of useful signal, causes distorted signals, reduces system's selectivity, can also destroy the performance of adjacent channel.Therefore, intermodulation performance is that system often examines index, represents with IM3, and is low more good more.
The material of RF coaxial connector, coating also lack strict selecting for use in the prior art, generally adopt following material:
Outer conductor: non-diamagnetic brass;
Inner wire: sun: non-diamagnetic brass; Cloudy: beryllium-bronze;
Insulator: polytetrafluoroethylene;
O-ring seals: silicon rubber;
Inner wire coating is silver-plated, and thickness is 7um;
Outer conductor coating is nickel plating, and thickness is 7um.
So the intermodulation performance of the radio frequency (RF) coaxial connector of production and processing is just poor, when especially bigbore radio frequency (RF) coaxial connector connects small-bore radio frequency cable, cause intermodulation performance poor because of complex structure, so can not be used for binary channels or multi-channel communication systems.
Summary of the invention:
The technical problem to be solved in the present invention is at the deficiencies in the prior art, and a kind of radio frequency (RF) coaxial connector of low intermodulation is provided.
For solving the problems of the technologies described above, the present invention proposes following technical scheme to realize:
A kind of radio frequency (RF) coaxial connector of low intermodulation, form jointly by male connector and female connector, the inner wire of described female connector is made up of jack spare and the connector that is used for the stube cable inner wire, the mutual affixed inner wire that is integral common formation female connector between jack spare and the connector, it is characterized in that: the inner and outer conductor material of main part of described male connector is diamagnetic brass; The jack spare material of main part of described female connector inner wire is beryllium-bronze or tin bronze, and the connector main body material of described female connector inner wire is diamagnetic brass, and the outer conductor material of main part of female connector is diamagnetic brass; The coating of the outer conductor metal parts of described yin, yang connector is followed successively by the silver-plated plating ternary alloy three-partalloy of copper facing from inside to outside, the inner wire metal parts coating of described yin, yang connector is silver-plated, the composition of described ternary alloy three-partalloy is a copper: 50%～65%, and tin: 30～45%, zinc: 5～10%.
Described diamagnetic brass is iron-holder less than 0.5% ledrite.
Thickness of coated copper layer 0.5～2 μ m, silver coating thickness 5～7 μ m, plating ternary alloy three-partalloy layer thickness 5～7 μ m in the described outer conductor metal parts coating.
Described inner wire metal parts thickness of coating is 7～10 μ m.
The present invention brings following beneficial effect:
Improved the third order intermodulation performance of product, make radio frequency (RF) coaxial connector when connecting the respective radio-frequency coaxial cable, not only have good physical property and electrical property, also can be used for multi-channel communication systems because have low intermodulation index in the single channel communication system.
Description of drawings:
Fig. 1: the structural representation of radio frequency (RF) coaxial connector
Fig. 2: the wire stripping schematic diagram of cable that radio frequency connector connects
Fig. 3: the intermodulation testing of Comparative Examples is figure as a result
Fig. 4: the intermodulation testing of a preferred embodiment of the present invention is figure as a result
Embodiment:
The present invention will be further described below in conjunction with the drawings and specific embodiments:
Present embodiment is a preferred embodiment.
Except that the jack spare material of main part of female connector is by the bronze, the material of main part of all the other metal partss of this connector is diamagnetic brass, and described diamagnetic brass is iron-holder less than 0.5% ledrite;
Outer conductor coating is followed successively by copper facing from inside to outside, and thickness is 2 μ m, and is silver-plated then, and thickness is 7 μ m, plates ternary alloy three-partalloy again, and the composition of described ternary alloy coating is a copper 55%, tin 35%, and zinc 10%, thickness are 7um;
Inner wire coating is silver-plated, and thickness is 7um.
In conjunction with referring to Fig. 1, Fig. 2, because radio frequency (RF) coaxial connector all will connect use with corresponding coaxial radio frequency cable, so be described further in conjunction with the assembling of cable.
Among Fig. 1: 1 is the inner wire jack spare of female connector; 2 is the inner wire connector of female connector; 3 is No. 1 insulator; 4 is No. 2 insulators; 5 is 1 extra shell; 6 is 2 extra shells; 7 is O-ring seals; Insulator uses polytetrafluoroethylene, and O-ring seals uses silicon rubber.
Among Fig. 2: 31 is cable inner conductor; 32 is cable insulation; 33 is cable outer conductor.
Assembling in conjunction with cable is described further: the cable of one section 25mm length of cutting earlier, the head at cable two ends cuts by shown in Figure 2 earlier.On the inner wire connector of female connector, load onto No. 1 insulator by Fig. 1, then the inner wire jack spare of female connector is tightened on the female connector inner wire connector, tighten between jack spare end face and No. 1 insulator end face seamless, mouthful riveted joint of rising becomes one it to jack spare and connector at 8 positions of Fig. 1 mark, and the tapering of clincher tool is 90～120 degree.On cable, put 2 extra shells of female connector, cable head at well cutting puts insulator No. 2, the insulated part that cable is exposed is inserted in the hole of No. 2 insulators fully, in the welding hole of female connector inner wire connector, put scolding tin and on electric iron, heat, after the scolding tin dissolving, be welded to connect the inner wire of part and cable, during welding cable inner conductor is inserted in the welding hole of connector fully, and then the inner wire of female connector is installed onto in the 2 extra shells of female connector by position shown in Figure 1,2 extra shells of heating female connector on electric iron, in the welding hole of 2 extra shells of female connector, add scolding tin, 2 extra shell and cable outer conductors of welding female connector.With spanner 1 extra shell is tightened to the common outer conductor that constitutes female connector on the 2 extra shells at last.As above step, connector on the other end of cable also attaching is finished to the assembling of this cable and connector.Carry out intermodulation testing then.
That tester adopts is the SI-900 of SUMMITEK company, and the instrument transmitting power is 20W, and the tranmitting frequency of instrument is 935～960MHz, and test pattern is selected frequency sweep mode for use.
In an identical manner, adopt material described in the background technology and coating assembling a connector as a comparison case, and under identical test case, carry out intermodulation testing.Comparative Examples: outer conductor: non-diamagnetic brass; Inner wire: sun: non-diamagnetic brass; Cloudy: beryllium-bronze; Insulator: polytetrafluoroethylene; O-ring seals: silicon rubber; Inner wire coating is silver-plated, and thickness is 7um; Outer conductor coating is nickel plating, and thickness is 7um.
Test result such as Fig. 3, its third order intermodulation index IM3 is :-145dBc
Present embodiment: test result such as Fig. 4, its third order intermodulation index IM3 is :-167dBc.
As seen, present embodiment has lower intermodulation index.
Claims (4)
1. the radio frequency (RF) coaxial connector of a low intermodulation, form jointly by male connector and female connector, the inner wire of described female connector is made up of jack spare and the connector that is used for the stube cable inner wire, the mutual affixed inner wire that is integral common formation female connector between jack spare and the connector, it is characterized in that: the inner and outer conductor material of main part of described male connector is diamagnetic brass; The jack spare material of main part of described female connector inner wire is beryllium-bronze or tin bronze; The material of main part of described female connector inner and outer conductor is diamagnetic brass, and its diamagnetic brass is iron-holder less than 0.5% ledrite; The coating of the outer conductor metal parts of described yin, yang connector is followed successively by the silver-plated plating ternary alloy three-partalloy of copper facing from inside to outside, the inner wire metal parts coating of described yin, yang connector is silver-plated, the composition of described ternary alloy three-partalloy is a copper: 50%～65%, and tin: 30～45%, zinc: 5～10%.
2. according to the radio frequency (RF) coaxial connector of the described a kind of low intermodulation of claim 1, it is characterized in that: thickness of coated copper layer 0.5～2 μ m, silver coating thickness 5～7 μ m, plating ternary alloy three-partalloy layer thickness 5～7 μ m in the described outer conductor metal parts coating.
3. according to the radio frequency (RF) coaxial connector of the described a kind of low intermodulation of claim 1, it is characterized in that: described inner wire metal parts thickness of coating is 7～10 μ m.
4. according to the radio frequency (RF) coaxial connector of the described a kind of low intermodulation of claim 2, it is characterized in that: described inner wire metal parts thickness of coating is 7～10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100262353A CN101064402B (en) | 2006-04-29 | 2006-04-29 | Low intermodulation RF coaxial connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100262353A CN101064402B (en) | 2006-04-29 | 2006-04-29 | Low intermodulation RF coaxial connector |
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| Publication Number | Publication Date |
|---|---|
| CN101064402A CN101064402A (en) | 2007-10-31 |
| CN101064402B true CN101064402B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100262353A Active CN101064402B (en) | 2006-04-29 | 2006-04-29 | Low intermodulation RF coaxial connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509839A (en) * | 2011-11-17 | 2012-06-20 | 中国电信股份有限公司 | Microwave device and manufacturing method therefor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202111339U (en) * | 2011-06-09 | 2012-01-11 | 中兴通讯股份有限公司 | Coaxial adapter |
| CN106992412A (en) * | 2017-05-15 | 2017-07-28 | 常州金信诺凤市通信设备有限公司 | A kind of novel multi-channel test adaptor device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058236A (en) * | 1991-07-25 | 1992-01-29 | 宁波市江东铜材厂 | Easy cut rare earth leaded brass |
| US6602093B1 (en) * | 2002-04-30 | 2003-08-05 | Agilent Technologies, Inc. | Precision BNC connector |
| CN1521903A (en) * | 2003-02-13 | 2004-08-18 | 安德鲁公司 | Low cost, high performance cable-connector system and assembly method |
| US6808407B1 (en) * | 2003-08-22 | 2004-10-26 | Agilent Technologies, Inc. | Locking precision male BNC connector with latch mechanism allowing cable rotation |
| CN1659746A (en) * | 2002-06-10 | 2005-08-24 | 托马斯·康茨 | Device for electronically contacting an electrically conductive part of a high-frequency system |
-
2006
- 2006-04-29 CN CN2006100262353A patent/CN101064402B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058236A (en) * | 1991-07-25 | 1992-01-29 | 宁波市江东铜材厂 | Easy cut rare earth leaded brass |
| US6602093B1 (en) * | 2002-04-30 | 2003-08-05 | Agilent Technologies, Inc. | Precision BNC connector |
| CN1659746A (en) * | 2002-06-10 | 2005-08-24 | 托马斯·康茨 | Device for electronically contacting an electrically conductive part of a high-frequency system |
| CN1521903A (en) * | 2003-02-13 | 2004-08-18 | 安德鲁公司 | Low cost, high performance cable-connector system and assembly method |
| US6808407B1 (en) * | 2003-08-22 | 2004-10-26 | Agilent Technologies, Inc. | Locking precision male BNC connector with latch mechanism allowing cable rotation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509839A (en) * | 2011-11-17 | 2012-06-20 | 中国电信股份有限公司 | Microwave device and manufacturing method therefor |
| CN102509839B (en) * | 2011-11-17 | 2014-05-28 | 中国电信股份有限公司 | Microwave device and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101064402A (en) | 2007-10-31 |
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