CN2775943Y - C net high suppressing duplexer - Google Patents
C net high suppressing duplexer Download PDFInfo
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- CN2775943Y CN2775943Y CN 200520001001 CN200520001001U CN2775943Y CN 2775943 Y CN2775943 Y CN 2775943Y CN 200520001001 CN200520001001 CN 200520001001 CN 200520001001 U CN200520001001 U CN 200520001001U CN 2775943 Y CN2775943 Y CN 2775943Y
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- cover plate
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Abstract
The utility model relates to a C net high suppression duplexer which adopts a coaxial cavity structure. The utility model is composed of a structural part and a responding part, wherein the rejection of a band edge can be strengthened by adding the number of strands, the suppression of out-of-band signals is enlarged by adding a bilateral absorption loop and using an elliptical function, thus, the steepness of the band edge is increased, and the selectivity is enhanced; thus, one path provided with the absorption loop has very high rejection of the band edge and very good isolation with another path which is not provided with the absorption loop. The utility model adopts the structure that a tuning screw passes through a cover plate and penetrates into a cavity, and furthermore, the electrical length of an inner conductor can be changed; filtering is formed to replace a filter after the resonance frequency is achieved, and thus, the cost is reduced.
Description
Technical field
The utility model relates to a kind of C net duplexer of the wireless communication field CDMA of UNICOM section, particularly relates to the two high inhibition multiplexers of a kind of C net of indoor covering system and outdoor covering system.
Background technology
Duplexer has a variety of with regard to its kind, our present described duplexer is meant coaxial cavity or the pectinate line duplexer that is used for indoor covering system and outdoor covering system.
In the application process of these two kinds of covering systems, the parts of using have: duplexer, low noise amplifier, filter, power amplifier etc.Wherein duplexer can provide transmitting-receiving to isolate, and the effect of filter is the outer unwanted signal of inhibition zone effectively, guarantees can not disturb other frequency ranges through the signal that is exaggerated behind the power amplifier.
At existing pectinate line or coaxial cavity duplexer, because its response is not to being very high with outer inhibition degree, so its finishing of task just can make antenna receiving-sending shared and provide certain transmitting-receiving to isolate.This just requires the participation of filter just can make the technical indicator of complete machine reach gratifying degree.Yet, so but improved cost.
The pectinate line duplexer is made up of cavity, inner wire, inner wire mounting screw, joint, joint mounting screw, silver-coated copper wire, cover plate, cover plate mounting screw, tuning screw, pad, nut etc.Joint is installed in the both sides of cavity by the joint mounting screw, the inner core of joint is connected with scolding tin with inner wire, inner wire is installed to cavity bottom by the conductor mounting screw, tuning screw is deep in the cavity by the screwed hole on the cavity, the frequency tuning screw can be deep in the middle of the hole of inner wire, and the coupling tuning screw then is deep between adjacent inner wire.Though it is this duplexer also can be accomplished reasonable isolation sometimes, just powerless aspect reasonable selectivity.The coaxial cavity duplexer is made up of joint, joint mounting screw, silver-coated copper wire, cavity, inner wire, inner wire mounting screw, cover plate, cover plate mounting screw, tuning screw, pad, nut etc., if the adding absorption circuit then also will have absorption circuit and polytetrafluoroethylene piece.The coaxial cavity duplexer can well solve the problem of isolation if add absorption circuit.
Existing coaxial cavity duplexer does not perhaps add absorption circuit, and perhaps the up-downgoing of Cai Yonging adds the form of monolateral absorption circuit simultaneously, by contrast, the latter has accomplished good isolation, but still slightly owing one aspect selectivity raises, and the duplexer response of the former response and pectinate line is similar.
This shows, still have certain problem in the C net duplexer of above-mentioned existing indoor covering system and outdoor covering system, await the engineering personnel and solve.In order to reduce cost, win the market, relevant producer there's no one who doesn't or isn't seeks solution painstakingly.But, for a long time, do not see that always suitable design finished by development.And special passive device manufacturer knows little about it to complete machine, so that the problems referred to above slowly fail to solve.
In structure in the C net duplexer of above-mentioned existing indoor covering system and outdoor covering system and use, obviously still have inconvenience and defective, and demand urgently further being improved.The problem that exists for the C net duplexer that solves existing indoor covering system and outdoor covering system, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because isolation and selectivity aspect defective that the C net duplexer of above-mentioned existing indoor covering system and outdoor covering system exists, our company based on the C net duplexer product of indoor covering system and outdoor covering system for many years design experiences and at deep theoretical foundation aspect the passive device and abundant design experiences, actively innovated, suppress duplexer in the hope of a kind of C net height of founding a kind of new structure, the successful higher problem of solution prior complete machine cost, reduce the cost of complete machine, thereby improve the competitiveness of product, can improve the C net duplexer of general existing indoor covering system and outdoor covering system, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, on the basis of satisfying technical indicator fully, createed the utility model that has innovation finally.
Summary of the invention
Main purpose of the present utility model is, there is the defective of isolation and selectivity aspect in the C net duplexer that overcomes existing indoor covering system and outdoor covering system, and a kind of C net height that a kind of new structure is provided suppresses duplexer, technical problem to be solved is to make it up good selectivity be arranged, good isolation is arranged again between the up-downgoing, thereby be suitable for practicality more, and have the value on the industry.
Another purpose of the present utility model is, provides a kind of C net height to suppress duplexer, and technical problem to be solved is to make it save filter, thereby cost reduces, and improves the competitiveness of product, makes it to be suitable for more practicality.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.Suppress duplexer according to a kind of C net height that the utility model proposes, adopt the coaxial cavity structure, form by structure and response two parts.
Its structure division comprises: joint, joint mounting screw 2, silver-coated copper wire, cavity 11, inner wire 6, inner wire mounting screw 15, cover plate 10, cover plate mounting screw 3, frequency tuning screw 12, coupling tuning screw 13, pad 5, nut 4, absorption circuit 16 and polytetrafluoroethylene piece 14 are formed.Its center tap is installed in the both sides of cavity 11 by joint mounting screw 2, forms input/output terminal.Link to each other with the inner wire 6 in first chamber, last chamber with the inner core of silver-coated copper wire, between its each adjacent chamber, each chamber is connected by coupling aperture 17 with joint.The cover plate mounting screw 3 that cover plate 10 and cavity 11 are contacted closely is housed on cover plate 10, cover plate 10 is installed to the top of cavity 11 by cover plate mounting screw 3.Also be provided with frequency tuning screw 12 and coupling tuning screw 13 on the cover plate 10.Absorption circuit 16 is contained on the polytetrafluoroethylene piece 14.Inner wire 6 by inner wire mounting screw 15 firm be fixed on cavity 11 bottoms.Be characterized in: after frequency tuning screw 12 and coupling tuning screw 13 are deep in the cavity 11 by the installation of the cover plate on the cover plate 10 screwed hole 9, be tuned to nut 4 frequency tuning screw 12 and coupling tuning screw 13 are fixed on cover plate 10 tops behind the suitable position, between nut 4 and cover plate 10, be lined with pad 5, it is more firm to make it to connect, change the electrical length of inner wire 6 by the distance between tuning screw 12 and the inner wire 6 of adjusting frequency, change by coupling tuning screw 13 and to form filtering after stiffness of coupling between the adjacent cavity reaches resonance frequency, its response is: absorption circuit 16 is for bilateral absorption circuit and have a road of absorption circuit 16 to have the position of couple band edge 2.5M to suppress can reach more than the 40dB, do not have absorption circuit a road to the isolation on another road greater than 90dB.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Aforesaid a kind of C net height suppresses duplexer and has adopted the coaxial cavity structure, and wherein said have a road of absorption circuit 16 that eight chambeies are arranged, another Lu Yousi chamber, and the shared version in 14 chambeies, its profile be regular square.
Aforesaid a kind of C net height suppresses duplexer, and wherein said absorption circuit 16 has two, and an absorption circuit 16 is contained between E chamber～F chamber, and another absorption circuit 16 is installed between G chamber～H chamber.
The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, the utility model adopts the coaxial cavity structure, is made up of structure and response two parts, wherein can strengthen the inhibition of band edge by increasing the chamber number, by adding absorption circuit, utilize elliptic function to strengthen inhibition, thereby increased the steepness of band edge, strengthened selectivity out of band signal, thereby making uply has very high band edge to suppress, and with descending good isolation is arranged.Adopt tuning screw by behind the cover plate, be deep in the cavity, and then can change the electrical length of inner wire, reach and form filtering after the resonance frequency replacing filter, thereby reduced cost.
By technique scheme, a kind of C net height that the utility model proposes suppresses duplexer and has following advantage at least:
1, a kind of C net height that the utility model proposes suppresses duplexer can save filter under the requirement that does not change its technical index, make the weight saving of complete machine, has simplified the assembling process of similar complete machine, has improved packaging efficiency.
2, the utility model makes it to replace the effect of filter, and can not reduce the technical indicator of complete machine owing to up good selectivity arranged, so, each complete machine of the same type can have been saved filter, greatly reduces the cost of product, and then has improved product competitiveness.
In sum, a kind of C net height of the utility model special construction suppresses duplexer, makes it up good selectivity be arranged, and good isolation is arranged between the up-downgoing and its cost is reduced, and improves the competitiveness of product.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and the C net duplexer of more existing indoor covering system and outdoor covering system has the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Figure 1A: structural front view of the present utility model;
Figure 1B: structure of the present utility model is overlooked part sectioned view;
Fig. 2 A: the front view of the utility model polytetrafluoroethylene piece;
Fig. 2 B: the left pseudosection of the utility model polytetrafluoroethylene piece;
Fig. 2 C: the vertical view of the utility model polytetrafluoroethylene piece;
Fig. 3: the utility model absorption circuit figure;
Fig. 4: the vertical view of the utility model cover plate;
1: delivery outlet silver-coated copper wire 2: the joint mounting screw
3: cover plate mounting screw 4: nut
5: pad 6: inner wire
7:SMA-KFD40 joint 8: input port silver-coated copper wire
9: cover plate is installed screwed hole 10: cover plate
11: cavity 12: the frequency tuning screw
13: coupling tuning screw 14: polytetrafluoroethylene piece
15: inner wire mounting screw 16: absorption circuit
17: coupling aperture 18: joint is installed screwed hole
19: counterbore 20 cover plate through holes
21 cover plate screwed holes
A～N: chamber
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to suppressing its embodiment of duplexer, structure, feature and effect thereof according to a kind of C net height that the utility model proposes, describe in detail as after.
See also Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 3 and shown in Figure 4, a kind of C net height of the utility model preferred embodiment suppresses duplexer, and it mainly comprises: it mainly is made up of cavity 11, inner wire 6, inner wire mounting screw 15, frequency tuning screw 12, coupling tuning screw 13, pad 5, nut 4, SMA-KFD40 joint 7, joint mounting screw 2, absorption circuit 16, cover plate 10, cover plate mounting screw 3, polytetrafluoroethylene piece 14.Wherein: SMA-KFD40 joint 7 is installed in the both sides of cavity 11.Inner wire 6 usefulness inner wire mounting screws 15 are installed to the bottom of cavity 11.On 14 of the polytetrafluoroethylene absorption circuit 16 is installed, in order to strengthen the area at its two ends, its two ends are added with primary nut.There is a road of absorption circuit 16 that eight chambeies are arranged, another Lu Yousi chamber, the shared version in 14 chambeies, its profile are the square of rule.Absorption circuit 16 has two, and an absorption circuit 16 is contained between E chamber～F chamber, and another absorption circuit 16 is installed between G chamber～H chamber.
On the input/output port of cavity 11, there is joint that screwed hole 18 is installed, and SMA-KFD40 joint 7 is a standarized component, can by joint the both sides that screwed hole 18 attaches it to cavity 11 be installed with joint mounting screw 3, SMA-KFD40 joint 7 inner cores and its inner wire that closes on most 6 usefulness scolding tin couple together both by delivery outlet silver-coated copper wire 1.Wherein, on its public mouthful, adopt illustrated Y shape branched structure that the inner wire 6 in its inner core and each chamber is linked to each other delivery outlet silver-coated copper wire 1, with scolding tin SMA-KFD40 joint 7 inner cores directly are connected with inner wire 6 at output.Equally, input port silver-coated copper wire 8 adopts illustrated Y shape branched structure that the inner wire 6 in its inner core and each chamber is linked to each other.
Be equipped with the counterbore 19 of the sunk screw of can packing in the bottom of cavity, inner wire mounting screw 15 is connected on the threaded inner wire 6 in bottom by counterbore 19.Like this, after tightening inner wire mounting screw 15, inner wire 6 just can be firm is fixed on cavity 11 bottoms.
Above cavity 11, there is cover plate that screwed hole 9 is installed, this screwed hole is corresponding with the cover plate through hole 20 on the cover plate 10, with cover plate 10 top that is installed to cavity 11 tightly, many screws can guarantee the compactness that cover plate 10 is connected with cavity 11 with cover plate mounting screw 3.
On cover plate 10, be provided with cover plate screwed hole 21, thereby frequency tuning screw 12 and coupling tuning screw 13 can be deep in the cavity 11 by cover plate screwed hole 21, frequency and coupling are adjusted, when be tuned to behind the suitable position, with nut 4 tuning screw is fixed on cover plate 10 tops.Between cover plate 10 and nut 4, pad 5 is arranged, make tuning screw more firm.
Its response is: have a road of absorption circuit to have the position of couple band edge 2.5M to suppress can to reach more than the 40dB, do not have absorption circuit a road to the isolation on another road greater than 90dB.
The utility model will be transferred survey by network analyzer, at first network analyzer will be carried out preheating about 30 minutes, with its correction, then the utility model is received network analyzer then, has finished the preparation of transferring before surveying.Debugging at first is fixed on frequency range in 2 to 3 times the scope that requires bandwidth, make its centre frequency just for requiring the centre frequency of bandwidth, at first use the tuning nail of screwdriver regulating frequency, it is carried out coarse adjustment, then alternately regulating frequency and coupling are followed closely, and make it to meet the requirements of technical indicator.
In the debug process, have a road of absorption circuit can furnishing up can also furnishing descending, paired like this duplexer just can save filter after being installed to complete machine, has reduced cost.
A kind of C net height that the utility model proposes that above-mentioned structure like this constitutes suppresses the technological innovation of duplexer, all has many saving graces for technical staff of the same trade now, and the progressive that possesses skills really.
Be that basic design of the present utility model is to make its isolation and selectivity good as mentioned above.But, in technical field of the present utility model,, can improve other exercisable embodiment of the present utility model as long as possess the most basic knowledge.In the utility model substantive technical scheme has been proposed the patent protection request, its protection range should comprise all variation patterns with above-mentioned technical characterstic.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (3)
1, a kind of C net height suppresses duplexer, adopt the coaxial cavity structure, form by structure and response two parts, its structure division comprises: joint, joint mounting screw (2), silver-coated copper wire, cavity (11), inner wire (6), inner wire mounting screw (15), cover plate (10), cover plate mounting screw (3), frequency tuning screw (12), coupling tuning screw (13), pad (5), nut (4), absorption circuit (16) and polytetrafluoroethylene piece (14) are formed, its center tap is installed in the both sides of cavity (11) by joint mounting screw (2), form input/output terminal, with inner core and the first chamber of silver-coated copper wire with joint, the inner wire (6) in chamber, end links to each other, between its each adjacent chamber, by coupling aperture (17) each chamber is connected, the cover plate mounting screw (3) that cover plate (10) and cavity (11) are contacted closely is housed on cover plate (10), cover plate (10) is installed to the top of cavity (11) by cover plate mounting screw (3), also be provided with frequency tuning screw (12) and coupling tuning screw (13) on the cover plate (10), absorption circuit (16) is contained on the polytetrafluoroethylene piece (14), inner wire (6) by inner wire mounting screw (15) firm be fixed on cavity (11) bottom, after it is characterized in that described frequency tuning screw (12) and coupling tuning screw (13) are deep in the cavity (11) by the installation screwed hole of the cover plate on the cover plate (10) (9), be tuned to nut (4) frequency tuning screw (12) and coupling tuning screw (13) are fixed on cover plate (10) top behind the suitable position, between nut (4) and cover plate (10), be lined with pad (5), it is more firm to make it to connect, change the electrical length of inner wire 6 by the distance between tuning screw 12 and the inner wire 6 of adjusting frequency, change by coupling tuning screw (13) and to form filtering after stiffness of coupling between the adjacent cavity (11) reaches resonance frequency, its response is: absorption circuit (16) is for bilateral absorption circuit and have a road of absorption circuit (16) to have the position of couple band edge 2.5M to suppress can to reach more than the 40dB, do not have absorption circuit a road to the isolation on another road greater than 90dB.
2, a kind of C net height according to claim 1 suppresses duplexer and has adopted the coaxial cavity structure, it is characterized in that absorption circuit is arranged (16) a road eight chambeies are arranged, another Lu Youliu chamber, the shared version in 14 chambeies, its profile be regular square.
3, suppress duplexer according to a kind of C net height described in claim 1 or 2, it is characterized in that wherein said absorption circuit (16) has two, an absorption circuit (16) is contained between E chamber～F chamber, and another absorption circuit (16) is installed between G chamber～H chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001001 CN2775943Y (en) | 2005-01-17 | 2005-01-17 | C net high suppressing duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001001 CN2775943Y (en) | 2005-01-17 | 2005-01-17 | C net high suppressing duplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775943Y true CN2775943Y (en) | 2006-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520001001 Expired - Fee Related CN2775943Y (en) | 2005-01-17 | 2005-01-17 | C net high suppressing duplexer |
Country Status (1)
| Country | Link |
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| CN (1) | CN2775943Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888009A (en) * | 2009-05-13 | 2010-11-17 | 奥雷通光通讯设备（上海）有限公司 | Inner depth limit control method for tuning screws of duplexer or filter |
| CN102832428A (en) * | 2012-09-18 | 2012-12-19 | 南京广顺网络通信设备有限公司 | Intermediate/low-frequency band high-rejection duplexer for radio-frequency signal |
| CN103746159A (en) * | 2013-12-13 | 2014-04-23 | 成都九洲迪飞科技有限责任公司 | Millimeter wave waveguide filter |
| CN109950671A (en) * | 2019-04-03 | 2019-06-28 | 江苏贝孚德通讯科技股份有限公司 | Pectination duplexer |
-
2005
- 2005-01-17 CN CN 200520001001 patent/CN2775943Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888009A (en) * | 2009-05-13 | 2010-11-17 | 奥雷通光通讯设备（上海）有限公司 | Inner depth limit control method for tuning screws of duplexer or filter |
| CN102832428A (en) * | 2012-09-18 | 2012-12-19 | 南京广顺网络通信设备有限公司 | Intermediate/low-frequency band high-rejection duplexer for radio-frequency signal |
| CN103746159A (en) * | 2013-12-13 | 2014-04-23 | 成都九洲迪飞科技有限责任公司 | Millimeter wave waveguide filter |
| CN109950671A (en) * | 2019-04-03 | 2019-06-28 | 江苏贝孚德通讯科技股份有限公司 | Pectination duplexer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060426 Termination date: 20110117 |