CN207625034U - Coaxial connector and filter, radio-frequency devices - Google Patents
Coaxial connector and filter, radio-frequency devices Download PDFInfo
- Publication number
- CN207625034U CN207625034U CN201721412439.0U CN201721412439U CN207625034U CN 207625034 U CN207625034 U CN 207625034U CN 201721412439 U CN201721412439 U CN 201721412439U CN 207625034 U CN207625034 U CN 207625034U
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- Prior art keywords
- coaxial connector
- dead ring
- filter
- cavity
- external equipment
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Abstract
A kind of coaxial connector of the utility model offer, filter and radio-frequency devices, the coaxial connector include shell, set on described shell one end flange and be embedded at the shell and with the inner wire of the casing insulation, the flange is equipped with dead ring in one end far from the shell, the dead ring is circumferentially disposed around the inner wire for stretching out the end face of flange, and for being inserted into when the coaxial connector is installed on external equipment cavity in the mounting hole of the external equipment cavity and external equipment cavity interference fit and grounding connection.In this programme, the dead ring of interference fit can be realized with the mounting hole of external equipment cavity by setting, realization coaxial connector is stably connected with external equipment cavity, good linear contact can be kept between dead ring and external equipment cavity, so as to reduce influence of the external environment to its conventional index, the stability of filter passive intermodulation is improved.
Description
Technical field
The utility model is related to radio communication devices fields, specifically, the utility model is related to a kind of coaxial connectors
And filter, radio-frequency devices using the coaxial connector.
Background technology
In Modern Mobile Communications Systems, metal cavity filter is since its electromagnetic wave shielding is good, passband high selectivity, work(
The advantages that rate capacity height is with batch machining production is easy to, always base stations in mobile communication system and indoor signal are distributed for a long time
The preferred kind of system.And as mobile communication technology develops, frequency spectrum resource growing tension, base station transmitting power is higher and higher,
Metal cavity filter can generate passive intermodulation (Passive Intermodulation/PIM) under high power conditions, passive
Intermodulation power level is excessively high, can interfere the normal work of receiver, reduces COMMUNICATION NETWORK PERFORMANCES.Coaxial connector is typically mounted at
It on the side wall of cavity body filter, is inputted as cavity body filter signal, the component part of output, therefore the intermodulation of coaxial connector
Horizontal and stability, which seems, to be even more important.
Traditional coaxial connector includes inner wire, insulator, flange etc..Wherein inner wire is mainly used for the biography of electric signal
It is defeated；Insulator plays the role of supporting inner wire；It is provided with screw hole on flange, can be filtered connector locking in cavity with screw
On wave device.Convention connectors are grounded mainly by flange and cavity, to improve earthing effect, are usually provided on flange
The becket of 0.2~0.5mm high, since connector screw installation sequencing is different, which easy tos produce leverage, difficult
To ensure becket and cavity linear contact.It is given a shock in product, is susceptible to screw loosening under temperature variations, lock
The case where power is deteriorated, causes connector ground bad, influences passive intermodulation level and long-time stability.
The scheme of another improvement is to use screwed connector, and this connector is in shell is machined with (outer)
Screw thread, while processing on cavity outer (interior) screw thread, the two is screwed together by screw thread, this mode intermodulation stability compared with
Traditional screw mounting means will be got well, the disadvantage is that needing to coat special glue at screw thread and be fixed when installation so that peace
It is difficult to dismantle after dress, it has not been convenient to carry out intermodulation repair and the not reproducible utilization of connector, be easy to cause material waste.
Utility model content
First purpose of the utility model is intended to provide a kind of coaxial connector simple in structure, intermodulation stability is high；
Second purpose of the utility model is intended to provide a kind of filter using the coaxial connector；
The third purpose of the utility model is intended to provide a kind of radio-frequency devices including above-mentioned filter.
To achieve the goals above, the utility model provides following technical scheme：
A kind of coaxial connector, including shell, set on described shell one end flange and be embedded at the shell and with institute
The inner wire of casing insulation is stated, the flange is equipped with dead ring in one end far from the shell, and the dead ring is around stretching
The inner wire of the end face of flange is circumferentially disposed, and for being inserted when the coaxial connector is installed on external equipment cavity
Enter in the mounting hole of the external equipment cavity and the external equipment cavity is interference fitted and grounding connection.
Preferably, the dead ring is integrally formed with the flange.
Preferably, the one end of the dead ring far from the flange is equipped with guide part.
Preferably, the guide part forms the ground loop for being abutted with the external equipment cavity.
Preferably, the axial length of the dead ring is 4~10mm；The outer diameter of the dead ring is more than the mounting hole
Internal diameter, and the difference of the outer diameter and the internal diameter is 0.02~0.05mm.
Preferably, gap is formed between the dead ring and the inner wire, and dielectric is filled in the gap.
Preferably, the outer rim of dead ring described in the flange upper edge is equipped with the capillary groove for filling sealing material.
A kind of filter, including filter cavity and the coaxial connector that is connect with the filter cavity, the filtering
Device cavity offers mounting hole, and the coaxial connector is above-mentioned coaxial connector, and the dead ring is inserted into the mounting hole
It is interior and with the filter cavity be interference fitted.
Preferably, resonant column is equipped in the filter cavity body, offers coupling aperture in the middle part of the resonant column, it is described in lead
Body stretches into the coupling aperture and forms gap therewith；It is equipped in the filter cavity body for the fixed branch for supporting the inner wire
Support medium.
A kind of radio-frequency devices, including above-mentioned filter.
Compared with prior art, the embodiment of the utility model has the following advantages：
1. in the coaxial connector of the utility model, can realize that interference is matched with the mounting hole of external equipment cavity by setting
The dead ring of conjunction is, it can be achieved that coaxial connector and external equipment cavity are stably connected with, between dead ring and external equipment cavity
Good linear contact can be kept, so as to reduce influence of the external environment to its conventional index, improves filter passive intermodulation
Stability.
2. by using the dead ring that can realize interference fit with the mounting hole of external equipment cavity, set when its insertion is external
When mounting hole in standby cavity, it can be good at the concentricity for ensureing coaxial connector and mounting hole and inner wire end and coupling
The spacing for closing hole, to avoid the situation of short circuit to be further ensured that the consistency of port bandwidth.
3. the tail end of the dead ring is equipped with guide part, the ground loop is set on the end face of the guide part, therefore, by
The influence of cavity dust is smaller, while can guarantee that coaxial connector is grounded well, and then ensures that the passive intermodulation told somebody what one's real intentions are is horizontal.
The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the stereogram of coaxial connector in the utility model embodiment；
Fig. 2 is the stereogram of the utility model embodiment median filter；
Fig. 3 is the sectional view of the utility model embodiment median filter；
Fig. 4 is the enlarged drawing in the portions A region shown in Fig. 3.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model
Limitation.
As shown in Figure 1, for the coaxial connector 2 of the utility model, it is mountable on filter cavity 1, as filter
The component part of signal input and output.It should be understood that ground, the coaxial connector of the utility model, it may also be used for other external equipments
On cavity, to collectively form the radio-frequency devices for handling radiofrequency signal with external equipment.
The coaxial connector 2, including shell 21, set on described shell one end flange 22 and be embedded at the shell and
With the inner wire 23 of the casing insulation, the inner wire can be extended to when coaxial connector is installed on external equipment cavity
Feed coupling is carried out in coupling aperture in external equipment cavity, one end far from the shell 21 extends to form on the flange 22
Dead ring 24, the dead ring 24 is circumferentially disposed around the inner wire 23 for stretching out 22 end face of flange, can be inserted into institute
It states in the mounting hole of external equipment cavity and is interference fitted with the external equipment cavity, the end face of the tail end of the dead ring 24
Be equipped with ground loop 242, with the external equipment cavity grounding connection.
In the embodiments of the present invention, the outer diameter of the dead ring 24 is more than the mounting hole of the external equipment cavity
Therefore it when the dead ring 24 is inserted into the mounting hole of the external equipment cavity, is entirely pressed by aperture by tool
In mounting hole 11, may make the dead ring 24 and the mounting hole 11 in interference state (the i.e. described coaxial connector 2 with it is described
The mounting hole of external equipment cavity is interference fitted)；On the one hand, the installation of the coaxial connector 2 and the external equipment cavity
Hole interference fit plays the role of further fixing to coaxial connector 2, ensures coaxial connector 2 under external force or works as
The screw of the fixed coaxial connector 2 and external equipment cavity remains able to keep steady with external cavity equipment when loosening
Determine and be not easy to loosen, reduces such as influence of the vibrations external environment to its conventional index, improve the stabilization of filter passive intermodulation
Property；On the other hand, the coaxial connector 2 and the mounting hole interference fit of the external equipment cavity can ensure that coaxial connector
2 with the concentricity of the mounting hole of external equipment cavity and the spacing of inner wire 23 end and coupling aperture 121, avoid inner wire 23
Contacted with the coupling aperture 121 in filter cavity 1 and short circuit situation to be further ensured that the consistency of port bandwidth.
Preferably, the dead ring 24 is integrally formed with the flange 22, and the axial length model of the dead ring 24
It encloses for 4~10mm.The dead ring 24 and flange integrated molding may make between the dead ring 24 and the flange 22
Connection it is firmer so that when the coaxial connector 2 is installed into filter cavity 1, whole soundness is carried
It is high.It is learnt through applicant's test of many times, uses axial length for the dead ring 24 of 4~10mm, realizing dead ring 24 and installation
Hole interference fit assembling it is more convenient under the premise of, pacify between more convenient control coaxial connector 2 and external equipment cavity
Positional precision after dress is particularly advantageous to improve the concentricity between dead ring 24 and mounting hole；The axial length is further excellent
It is selected as 5.5mm.In view of external equipment cavity wall thickness to installation hole depth and installs hole depth to 24 axial length of dead ring
Influence, it is more preferred to, the diameter ratio of the axial length and dead ring 24 is 1:1.It is described in the utility model embodiment
The thickness range of dead ring 24 is 0.5~3mm, and the intensity of dead ring 24 is able to maintain that under this thickness, ensures that ground loop 242 is flat
It is whole not generate deformation, while disclosure satisfy that ground loop 242 and external equipment contact area are not too large, be conducive to coaxial connector
2 with the pressure of external equipment cavity interior installing hole faying face so that coaxial connector 2 combined with filter cavity 1 it is even closer,
It can guarantee that coaxial connector 2 is grounded well, and then ensure that lower passive intermodulation is horizontal.Certainly, the height of the dead ring 24
Degree and thickness can be adjusted according to actual needs.
Preferably, one end far from the flange 22 of the dead ring 24 is equipped with guide part 241.The guide part 241
Diameter it is smaller about 0.4~1mm than external equipment cavity interior installing hole, to make to play guiding role installing the dead ring 24,
The dead ring 24 is set to be easier the mounting hole being inserted into the external equipment cavity.
Preferably, the end face of the guide part 241 forms the ground loop 242 for being abutted with external equipment cavity.It is described
Ground loop 242 is located on the end face of guide part 241, is contacted with external equipment cavity after installation, is influenced by cavity dust smaller；
Also, since ground loop 242 is set to the end face of guide part 241 and annular in shape, area is smaller, is conducive to increase coaxial connector 2
With the pressure of external equipment cavity interior installing hole faying face so that coaxial connector 2 combined with filter cavity 1 it is even closer,
It can guarantee that coaxial connector 2 is grounded well, and then ensure that lower passive intermodulation is horizontal.
Preferably, gap (non-label, similarly hereinafter) is formed between the dead ring 24 and inner wire 23, is filled in the gap
There is dielectric 25.The dielectric 25 plays a supporting role to the inner wire 23, to prevent the inner wire 23 outside
Trembling causes its tail end to be contacted and short circuit with the coupling aperture in external equipment cavity in portion's equipment cavity.
Preferably, the outer rim of dead ring 24 described in 22 upper edge of the flange is equipped with the capillary groove for filling sealing material
221, to play the role of sealing waterproof.In one embodiment of the utility model, the sealing material is waterproof apron 222,
Certainly, in the embodiments of the present invention, the sealing material is not limited to waterproof apron.
Fig. 2~4 show the filter 100 using the coaxial connector 2.The filter 100 includes filter cavity
Body 1 and the coaxial connector being connect with the filter cavity 1 offer mounting hole 11 in the filter cavity body, described same
Mandrel connector is above-mentioned coaxial connector 2, the dead ring 24 be inserted into the mounting hole 11 and with the filter cavity 1
Interference fit, the outer diameter of the dead ring 24 are more than the internal diameter of the mounting hole 11, difference between 0.02~0.05mm, with
Conducive to assembly operation.
It is additionally provided with the chamber hole 13 penetrated through with the mounting hole 11 in the filter cavity 1, is located at the chamber hole 13
The resonant column 12 of side, 12 middle part of the resonant column offer coupling aperture 121, and the inner wire 23 of the coaxial connector 2 is successively
After mounting hole 11 and chamber hole 13, tail end is vacantly placed in coupling aperture 121, i.e., the inner wire 23 stretches into the coupling
Hole 121 simultaneously forms gap therewith, and the coupling aperture 121 is for carrying out feed coupling；It is set on the flange 22 of the coaxial connector 2
There are several screw holes, passes through the screw hole that can further fix the coaxial connector 2 and the filter by screw
Wave device cavity 1.
Preferably, it is equipped in the filter cavity 1 and supports the inner wire 23 to prevent the inner wire for fixed
23 Supporting Medias trembleed in the coupling aperture.It, can be in the coupling aperture 121 and institute in one embodiment of the utility model
It states and is embedded the Supporting Media in the gap between inner wire 23；It, can be in chamber hole in another embodiment of the utility model
It is embedded the Supporting Media between 13 and inner wire 23, by the way that the Supporting Media is arranged in filter cavity 1, institute can be prevented
Inner wire 23 is stated to tremble in the coupling aperture and contact and short circuit with coupling aperture 121.
The utility model also provides a kind of radio-frequency devices (not shown), and the radio-frequency devices include above-mentioned filter 100.
The radio-frequency devices use above-mentioned coaxial connector 2, can reinforce the stability of entire radio-frequency devices, and it is normal to its to reduce external environment
The influence for advising index, improves the stability of radio-frequency devices.The radio-frequency devices include but not limited to filter, power splitter, coupling
Device, duplexer, radio frequency amplifier.
The above is only some embodiments of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of coaxial connector, including shell, set on described shell one end flange and be embedded at the shell and with it is described
The inner wire of casing insulation, which is characterized in that the flange is equipped with dead ring, the dead ring in one end far from the shell
It is circumferentially disposed around the inner wire for stretching out the end face of flange, and for being installed on external equipment in the coaxial connector
It is inserted into when cavity in the mounting hole of the external equipment cavity and external equipment cavity interference fit and grounding connection.
2. coaxial connector according to claim 1, which is characterized in that the dead ring is integrally formed with the flange.
3. coaxial connector according to claim 1, which is characterized in that the one end of the dead ring far from the flange is set
There is guide part.
4. coaxial connector according to claim 3, which is characterized in that the guide part is formed for being set with the outside
The ground loop that standby cavity abuts.
5. coaxial connector according to claim 1, which is characterized in that the axial length of the dead ring is 4~10mm；
The outer diameter of the dead ring is more than the internal diameter of the mounting hole, and the difference of the outer diameter and the internal diameter be 0.02~
0.05mm。
6. coaxial connector according to claim 1, which is characterized in that formed between the dead ring and the inner wire
Gap is filled with dielectric in the gap.
7. coaxial connector according to claim 1, which is characterized in that the outer rim ring of dead ring described in the flange upper edge
Equipped with the capillary groove for filling sealing material.
8. a kind of filter, including filter cavity and the coaxial connector that is connect with the filter cavity, the filter
Cavity offers mounting hole, which is characterized in that the coaxial connector is coaxially connecting described in claim 1~7 any one
Device is connect, the dead ring is inserted into the mounting hole and is interference fitted with the filter cavity.
9. filter according to claim 8, which is characterized in that resonant column is equipped in the filter cavity body, it is described humorous
It shakes and offers coupling aperture in the middle part of column, the inner wire stretches into the coupling aperture and forms gap therewith；In the filter cavity body
Equipped with for the fixed Supporting Media for supporting the inner wire.
10. a kind of radio-frequency devices, which is characterized in that including the filter described in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721412439.0U CN207625034U (en) | 2017-10-26 | 2017-10-26 | Coaxial connector and filter, radio-frequency devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721412439.0U CN207625034U (en) | 2017-10-26 | 2017-10-26 | Coaxial connector and filter, radio-frequency devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207625034U true CN207625034U (en) | 2018-07-17 |
Family
ID=62826597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721412439.0U Withdrawn - After Issue CN207625034U (en) | 2017-10-26 | 2017-10-26 | Coaxial connector and filter, radio-frequency devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207625034U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727835A (en) * | 2018-12-29 | 2019-05-07 | 中国电子科技集团公司第十二研究所 | Inner conductor, coaxial delivery of energy window and travelling-wave tubes for coaxial delivery of energy window |
| CN110676542A (en) * | 2019-09-05 | 2020-01-10 | 京信通信技术(广州)有限公司 | Port coupling structure, filter and radio frequency assembly |
-
2017
- 2017-10-26 CN CN201721412439.0U patent/CN207625034U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727835A (en) * | 2018-12-29 | 2019-05-07 | 中国电子科技集团公司第十二研究所 | Inner conductor, coaxial delivery of energy window and travelling-wave tubes for coaxial delivery of energy window |
| CN109727835B (en) * | 2018-12-29 | 2021-06-29 | 中国电子科技集团公司第十二研究所 | Inner conductor for coaxial energy transmission window, coaxial energy transmission window and traveling wave tube |
| CN110676542A (en) * | 2019-09-05 | 2020-01-10 | 京信通信技术(广州)有限公司 | Port coupling structure, filter and radio frequency assembly |
| CN110676542B (en) * | 2019-09-05 | 2021-06-25 | 京信通信技术(广州)有限公司 | Port coupling structure, filter and radio frequency assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200120 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Co-patentee before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Patentee before: Jingxin Communication System (China) Co., Ltd. Co-patentee before: Jingxin Communication System (Guangzhou) Co., Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180717 Effective date of abandoning: 20200505 |
|
| AV01 | Patent right actively abandoned |