CN202405408U - 400 MHz antistatic multilayer shielding microstrip line directional coupler - Google Patents
400 MHz antistatic multilayer shielding microstrip line directional coupler Download PDFInfo
- Publication number
- CN202405408U CN202405408U CN2011205615822U CN201120561582U CN202405408U CN 202405408 U CN202405408 U CN 202405408U CN 2011205615822 U CN2011205615822 U CN 2011205615822U CN 201120561582 U CN201120561582 U CN 201120561582U CN 202405408 U CN202405408 U CN 202405408U
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- China
- Prior art keywords
- directional coupler
- shell cavity
- positive
- metal wire
- shield plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a 400 MHz antistatic multilayer shielding microstrip line directional coupler. The directional coupler comprises a shell cavity, wherein the shell cavity is made of titanium aluminum alloy, and a printed circuit board (PCB), a positive shield plate and a negative shield plate are arranged in the shell cavity; a main metal wire and an auxiliary metal wire are respectively embedded in the front surface and the back surface of the PCB; and the positive shield plate 5 and the negative shield plate 6 are respectively covered on the front surface and the back surface of the PCB 2. The directional coupler has the advantages that the stability of signal output is greatly enhanced, the interference resistance is enhanced, low-loss transmission of radio-frequency signals in an antenna feed system is effectively ensured, and a whole wireless signal cover system is comprehensive and uniform.
Description
Technical field
The utility model relates to a kind of directional coupler, relates in particular to major and minor metal wire syndeton in this directional coupler.
Background technology
Directional coupler is a kind of general microwave/millimeter wave parts, can be used for isolation, distribution and the mixing of signal.
In 400MHz private network mobile communication, directional coupler mainly is that radiofrequency signal is carried out power division according to a certain percentage, thereby plays the effect of control signal intensity.It also as the link of antenna-feedback system, links together radio frequency cable, forms distributed antenna-feedback system.
Traditional directional coupler generally all is the cast aluminium cavity; Main metal wire in the cavity is coupled to radiofrequency signal on the secondary metal wire; And interference makes signal transmit along a direction of secondary metal wire each other, and the watt level of coupled end output is by the distance decision between two metal line.Such coupler receives the influence of surrounding environment factor easily, and like the variation of temperature, humidity, the characteristic of expanding with heat and contract with cold of metal material can cause the power output of coupled end unstable, thereby causes the signal output of whole antenna-feedback system unstable.In addition, radiofrequency signal is transmitted in passive device, the interference of other signals around receiving easily, and conventional coupler only depends on the shielding of cast aluminium cavity, and interference free performance is poor.
Summary of the invention
The utility model technical issues that need to address have provided the antistatic multilayer screen microstrip line directional coupler of a kind of 400MHz, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
The utility model comprises: the shell cavity; Described shell cavity material is a titanium-aluminium alloy; In described shell cavity, comprise: pcb board; Embed main metal wire and secondary metal wire respectively on the positive and negative two sides of described pcb board; Also comprise: positive barricade and anti-barricade; Described positive barricade 5 covers described pcb board 2 positive and negative two sides respectively with anti-barricade 6.
Compared with prior art; The beneficial effect of the utility model is: the stability that has greatly strengthened the output of coupler signal; And the interference free performance enhancing, effectively guaranteed the low damage transmission of radiofrequency signal in the antenna-feedback system, make whole radio signal coverage system more comprehensively evenly.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
Visible by Fig. 1: the utility model comprises: shell cavity 1; Described shell cavity 1 material is a titanium-aluminium alloy; In described shell cavity 1, comprise: pcb board 2; Embed main metal wire 3 and secondary metal wire 4 respectively on the positive and negative two sides of described pcb board 2; Also comprise: positive barricade 5 and anti-barricade 6; Described positive barricade 5 covers described pcb board 2 positive and negative two sides respectively with anti-barricade 6.
The utility model embeds the positive and negative two-layer of pcb board with the major-minor metal wire, decides the size of coupled end power output through the thickness of pcb board.Because metal wire embeds in the pcb board, so it can ignore by the influence of environment around temperature, the humidity etc. basically, and the coupled end output of coupler and the signal output of whole antenna-feedback system are more tended towards stability; Secondly; The pcb board that is embedded with metal wire at coupler is Ge Jia one deck barricade up and down, strengthens anti-interference, and the shell cavity adopts titanium-aluminium alloy; Firm in structure; Not yielding, signal without fixed duties has also ensured leaking outside of internal transmission signal to passing the interference of coupler signal around having prevented to greatest extent.In addition, Japanese TLG coating process is adopted on the coupler surface, can resist the 2000V electrostatic high-pressure, prevents interference and the damage of forceful electric power to antenna-feedback system.Through above-mentioned improvement, greatly strengthened the stability of coupler signal output, and also the interference free performance enhancing, effectively guaranteed the low damage transmission of radiofrequency signal in the antenna-feedback system, make whole radio signal coverage system more comprehensively evenly.
Claims (1)
1. the antistatic multilayer screen microstrip line directional coupler of 400MHz comprises: the shell cavity; It is characterized in that: described shell cavity material is a titanium-aluminium alloy; In described shell cavity, comprise: pcb board; Embed main metal wire and secondary metal wire respectively on the positive and negative two sides of described pcb board; Also comprise: positive barricade and anti-barricade; Described positive barricade (5) and anti-barricade (6) cover the positive and negative two sides of described pcb board (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205615822U CN202405408U (en) | 2011-12-28 | 2011-12-28 | 400 MHz antistatic multilayer shielding microstrip line directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205615822U CN202405408U (en) | 2011-12-28 | 2011-12-28 | 400 MHz antistatic multilayer shielding microstrip line directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202405408U true CN202405408U (en) | 2012-08-29 |
Family
ID=46703035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205615822U Expired - Fee Related CN202405408U (en) | 2011-12-28 | 2011-12-28 | 400 MHz antistatic multilayer shielding microstrip line directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202405408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344806A (en) * | 2013-06-21 | 2013-10-09 | 中国电子科技集团公司第四十一研究所 | Dual-orientation electrical bridge |
| CN109975719A (en) * | 2017-12-22 | 2019-07-05 | 北京北广科技股份有限公司 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
-
2011
- 2011-12-28 CN CN2011205615822U patent/CN202405408U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344806A (en) * | 2013-06-21 | 2013-10-09 | 中国电子科技集团公司第四十一研究所 | Dual-orientation electrical bridge |
| CN103344806B (en) * | 2013-06-21 | 2015-12-23 | 中国电子科技集团公司第四十一研究所 | A kind of amphiorentation electric bridge |
| CN109975719A (en) * | 2017-12-22 | 2019-07-05 | 北京北广科技股份有限公司 | A kind of sampling apparatus with shielding case of radio-frequency power supply |
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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: 20120829 Termination date: 20171228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |