CN208539071U - Low-frequency range cavity body filter broadband ports and filter - Google Patents
Low-frequency range cavity body filter broadband ports and filter Download PDFInfo
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- CN208539071U CN208539071U CN201821162887.4U CN201821162887U CN208539071U CN 208539071 U CN208539071 U CN 208539071U CN 201821162887 U CN201821162887 U CN 201821162887U CN 208539071 U CN208539071 U CN 208539071U
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Abstract
The utility model relates to a kind of low-frequency range cavity body filter broadband ports and filters, including conductive shell, resonant column, coupling ring and connectivity port.Conductive shell is equipped with cavity.Resonant column is arranged in the cavity, and resonant column and cavity bottom wall are electrically connected, and resonant column is equipped with step.Coupling ring is set on resonant column and is disposed adjacent with step, and coupling ring respectively with step, resonant column Insulation Coordination.Connectivity port is installed on conductive shell, and the inner core of connectivity port is extend into cavity through conductive shell.Inner core and coupling ring are electrically connected.Above-mentioned low-frequency range cavity body filter broadband ports, since coupling ring not only cooperates with resonant column sidewall coupling, cooperation is also coupled with step, in this way coupling ring and resonant column resonant column axial direction and in the radial direction have a coupling amount, so as to increase coupling width, the phase width of low frequency product can be made to reach 30% or more coupling width.
Description
Technical field
The utility model relates to wave filter technology field, more particularly to a kind of low-frequency range cavity body filter broadband ports with
Filter.
Background technique
Traditional low-frequency range (frequency is lower than 1500MHz) cavity body filter broadband ports, usually using silver-jacketed wire come
Connect radio frequency connector and resonant column.The height welded on resonant column by adjusting silver-jacketed wire realizes different port bands
It is wide.However, the height that can be raised can only be also limited within the altitude range of resonant column, even if welding and assembling height is lifted to humorous
The top of vibration column, it is also inadequate that port, which couples bandwidth,.
Summary of the invention
Based on this, it is necessary to overcome the deficiencies of existing technologies, provide a kind of low-frequency range cavity body filter broadband ports and filter
Wave device, it is capable of increasing coupling width.
Its technical solution is as follows: a kind of low-frequency range cavity body filter broadband ports, comprising: conductive shell, the conductive shell are set
There is cavity；Resonant column, in the cavity, the resonant column and the cavity bottom wall are electrically connected, institute for the resonant column setting
Resonant column is stated equipped with step；Coupling ring, the coupling ring is set on the resonant column and is disposed adjacent with the step, and institute
State coupling ring respectively with the step, the resonant column Insulation Coordination；Connectivity port, the connectivity port are installed in the conduction
On shell, the inner core of the connectivity port is extend into the cavity through the conductive shell, the inner core and coupling ring electricity
Property connection.
A kind of filter, including the low-frequency range cavity body filter broadband ports.
Above-mentioned low-frequency range cavity body filter broadband ports and filter, due to coupling ring not only with resonant column sidewall coupling
Cooperation also couples cooperation, such coupling ring and resonant column in the axial direction of resonant column with step and in the radial direction has a coupling
Resultant can make the phase width of low frequency product reach 30% or more coupling width so as to increase coupling width.
In addition, apparatus structure is simple, the overall volume of filter can be reduced, meet the dilatation needs under extreme condition, it is low in cost, it fits
Close integrated and miniaturization.
Further, the low-frequency range cavity body filter broadband ports further include insulating isolation ring, described to be dielectrically separated from
Ring includes insulation base ring and insulation side ring, and the insulation base ring is connect with the insulation side ring, and the insulation side ring is located at described
Between resonant column lateral wall and the resonant column lateral wall, the insulation base ring is between the coupling ring and the step.
Further, coatings layer or insulating blanket are provided on the coupling ring or the resonant column lateral wall.
Further, the resonant column includes the first conductive column, the second conductive column and conductive sleeve；First conductive column with
The cavity bottom wall is electrically connected；Second conductive column and first conductive column are electrically connected, on second conductive column
It is provided with the step；The conductive sleeve is set in outside first conductive column, described conductive sleeve one end and second conduction
Styletable face is connected, and the conductive sleeve other end and cavity bottom wall interval are arranged.
Further, second conductive column is arranged in close to one end of first conductive column in the step, described
Coupling ring is located above the step；Alternatively, the step, which is arranged, is away from first conductive column in second conductive column
One end, the coupling ring is located at below the step.
Further, first conductive column is detachably connected with second conductive column, first conductive column and institute
Conductive shell is stated to be integrated；Second conductive column is integrated with the conductive sleeve.
Further, the conductive shell top surface opposite with the cavity bottom wall is equipped with dismountable lid, the lid
Equipped with through-hole, liftable tuning plug is equipped in the through-hole.
Further, the low-frequency range cavity body filter broadband ports further include the spiral shell being fixed on the lid
Mother, the screw hole of the nut is corresponding to the through-hole to be arranged, and the tuning plug is the screw rod or screw matched with the nut,
The tuning plug passes through the screw hole of the nut and the through-hole is extend into the cavity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of low-frequency range cavity body filter broadband ports described in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of low-frequency range cavity body filter broadband ports described in another embodiment of the utility model；
Fig. 3 is the structural schematic diagram of low-frequency range cavity body filter broadband ports described in another embodiment of the utility model；
Fig. 4 is the structural schematic diagram of low-frequency range cavity body filter broadband ports described in the utility model another embodiment；
Fig. 5 is the phase broadband schematic diagram of low-frequency range cavity body filter broadband ports described in the utility model embodiment.
Appended drawing reference:
10, conductive shell, 11, cavity, 12, lid, 13, tuning plug, 14, nut, 20, resonant column, 21, step, 22, first
Conductive column, the 23, second conductive column, 24, conductive sleeve, 25, recess portion, 30, coupling ring, 40, connectivity port, 41, inner core, 50, insulation
Isolation ring, 51, insulation base ring, 52, insulation side ring.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.It defines as a result,
The feature of " first ", " second " can explicitly or implicitly include at least one of the features.In the description of the present invention,
The meaning of " plurality " is at least two, such as two, three etc., unless otherwise specifically defined.
In the description of the present invention, it should be understood that when an element is considered as " connection " another element,
It can be directly to another element or may be simultaneously present intermediary element.On the contrary, when element be referred to as " direct " and
When another element connects, intermediary element is not present.
In one embodiment, referring to figure 1, figure 2 and figure 5., a kind of low-frequency range cavity body filter broadband ports, including lead
Electric shell 10, resonant column 20, coupling ring 30 and connectivity port 40.The conductive shell 10 is equipped with cavity 11.The resonant column 20 is arranged
In the cavity 11, the resonant column 20 is electrically connected with 11 bottom wall of cavity, and the resonant column 20 is equipped with step 21.Institute
Coupling ring 30 is stated to be set on the resonant column 20 and be disposed adjacent with the step 21, and the coupling ring 30 respectively with it is described
Step 21,20 Insulation Coordination of the resonant column.The connectivity port 40 is installed on the conductive shell 10, the connectivity port 40
Inner core 41 extend into the cavity 11 through the conductive shell 10.The inner core 41 is electrically connected with the coupling ring 30.
Above-mentioned low-frequency range cavity body filter broadband ports, since coupling ring 30 is not only matched with 20 sidewall coupling of resonant column
It closes, also couple cooperation with step 21, the axial direction and in the radial direction of such coupling ring 30 and resonant column 20 in resonant column 20
There is coupling amount, so as to increase coupling width, the phase width of low frequency product can be made to reach 30% or more coupling
It closes width (as shown in Figure 5).In addition, apparatus structure is simple, the overall volume of filter can be reduced, meet the expansion under extreme condition
Hold and needs, it is low in cost, it is suitble to integrated and miniaturization.
Specifically, coupling ring 30 can both be located at 21 top of step, can be coupled with step 21 on step 21, and energy
It is enough to be convenient for being installed in resonant column 20；Coupling ring 30 can also be located at the lower section of step 21, also be able to achieve below step 21 and step
21 are coupled, and can be specifically installed in by viscous set of viscose glue on resonant column 20 or by being fixed on resonant column 20.
Further, referring again to Fig. 1, the low-frequency range cavity body filter broadband ports further include insulating isolation ring
50.The insulating isolation ring 50 includes insulation base ring 51 and insulation side ring 52.The insulation base ring 51 and the insulation side ring 52
Connection, the insulation side ring 52 is between 20 lateral wall of 20 lateral wall of resonant column and the resonant column, the insulation bottom
Ring 51 is between the coupling ring 30 and the step 21.In this way, insulating isolation ring 50 can be by coupling ring 30 and resonant column
Keep apart between 20, to realize the Insulation Coordination between step 21, resonant column 20 respectively of coupling ring 30.Insulating isolation ring 50 has
Body uses PTFE medium ring.In one embodiment, and it is not provided with insulating isolation ring 50, but in coupling ring 30 or humorous
Vibration 20 side wall of column on be provided with coatings layer or insulating blanket, can also make coupling ring 30 respectively with step 21, resonant column 20
Insulation Coordination.
Further, Fig. 3 and Fig. 4 are please referred to, the resonant column 20 includes the first conductive column 22, the second conductive column 23 and leads
Electricity set 24.First conductive column 22 is electrically connected with 11 bottom wall of cavity.Second conductive column 23 is led with described first
Electric column 22 is electrically connected, and is provided with the step 21 on second conductive column 23.Specifically, the step 21 is arranged described
For second conductive column 23 close to one end of first conductive column 22, the coupling ring 30 is located at 21 top of step；Alternatively,
One end that second conductive column 23 is away from first conductive column 22 is arranged in the step 21, and the coupling ring 30 is located at
21 lower section of step.The conductive sleeve 24 is set in outside first conductive column 22, described 24 one end of conductive sleeve and described the
Two conductive columns, 23 end face is connected, and 24 other end of conductive sleeve and the 11 bottom wall interval of cavity are arranged.In this way, 24 sets of conductive sleeve
After being located at 22 outside of the first conductive column, the resonance frequency of low-frequency range cavity body filter broadband ports can be greatly reduced, so as to
The overall volume for enough reducing filter, meets the dilatation needs under extreme condition.Specifically, when conductive sleeve 24 and 11 side wall of cavity
Between spacing get over hour, bigger, the as formed resonance frequency of the coupled capacitor between 11 side wall of conductive sleeve 24 and cavity
It will be smaller.
In one embodiment, first conductive column 22 is detachably connected with second conductive column 23, and described first
Conductive column 22 is integrated with the conductive shell 10.Second conductive column 23 is integrated knot with the conductive sleeve 24
Structure.In this way, in production process, can by the first conductive column 22 together with conductive shell 10 by forging and stamping or casting integrated molding, by the
Two conductive columns 23, by forging and stamping or casting integrated molding, are then set to the first conductive column for 24 sets of conductive sleeve again together with conductive sleeve 24
Outside 22, and the second conductive column 23 is connected with the first conductive column 22 by connector, so that production efficiency is higher.In another reality
It applies in example, is detachably connected between first conductive column 22 and the conductive shell 10.Second conductive column 23 is led with described
It is detachably connected between electricity set 24.
Further, the conductive shell 10 top surface opposite with 11 bottom wall of cavity is equipped with dismountable lid 12.Institute
Lid 12 is stated equipped with through-hole, the through-hole is interior to be equipped with liftable tuning plug 13.In this way, extending into chamber by adjusting tuning plug 13
Depth in body 11 just can change the resonance frequency of low-frequency range cavity body filter broadband ports.
In one embodiment, the through-hole be screw hole, the tuning plug 13 be the screw rod matched with the screw hole or
Screw.In this way, rotation tuning bar 13, can control the depth that tuning plug 13 is inserted into cavity 11 more conveniently, thus
The resonance frequency of 11 resonator of coaxial cavity can be adjusted.
In another embodiment, the low-frequency range cavity body filter broadband ports further include being fixed at the lid
Nut 14 on body 12.The screw hole of the nut 14 is corresponding to the through-hole to be arranged, and the tuning plug 13 is and the nut 14
The screw rod or screw matched, the tuning plug 13 passes through the screw hole of the nut 14 and the through-hole extend into the cavity 11
In.
In this way, similarly, rotation tuning bar 13 can control tuning plug 13 and be inserted into cavity 11 more conveniently
Depth is adjusted so as to the resonance frequency to low-frequency range cavity body filter broadband ports.In addition, first through hole can not
With the threaded hole for being designed as cooperating with tuning plug 13, the difficulty of processing of lid 12 is reduced.
It optionally, is damping cooperation between tuning plug 13 and first through hole side wall, push-and-pull tuning plug 13 in this way arrives cavity 11
Behind interior predetermined depth position, due to having certain frictional force between tuning plug 13 and first through hole side wall, in frictional force
Tuning plug 13 can be made to be arranged on lid 12 relatively fixedly under effect.
In addition, the resonant column 20 is equipped with recess portion 25 towards the top end face of the tuning plug 13, the recess portion 25 with
The accordingly setting of tuning plug 13.In this way, recess portion 25 is as evacuation position, so that resonance when tuning plug 13 is pushed into cavity 11
Column 20 will not contact tuning plug 13, and the depth that tuning plug 13 extend into cavity 11 is relatively large, guarantee low-frequency range cavity body filter
The relatively wide adjusting range of the resonance frequency of broadband ports, so as to the body of opposite reduction low-frequency range cavity body filter broadband ports
Product.
In one embodiment, the width of low-frequency range cavity body filter broadband ports described in a kind of any of the above-described embodiment
Adjusting method includes the following steps:
Adjust coupling ring 30 inner ring diameter, with adjust coupling ring 30 inner sidewall and 20 lateral wall of resonant column it
Between gap size；And/or
The thickness size of coupling ring 30 is adjusted, to adjust the gap size between coupling ring 30 and step 21；And/or
The thickness size of the insulation base ring 51 of the insulating isolation ring 50 between coupling ring 30 and step 21 is arranged in adjustment, with
Adjust the gap size between coupling ring 30 and step 21.
The width modulation method of above-mentioned low-frequency range cavity body filter broadband ports, by adjusting the inner sidewall of coupling ring 30
With the gap size between the gap size between 20 lateral wall of resonant column, or adjustment coupling ring 30 and step 21, just can
Adjust the coupling width of port.
In one embodiment, a kind of filter, it is wide including low-frequency range cavity body filter described in any of the above-described embodiment
Port.Above-mentioned filter, due to including the low-frequency range cavity body filter broadband ports, technical effect with it is described low
Frequency range cavity body filter broadband ports are identical, without repeating.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (9)
1. a kind of low-frequency range cavity body filter broadband ports characterized by comprising
Conductive shell, the conductive shell are equipped with cavity；
Resonant column, in the cavity, the resonant column and the cavity bottom wall are electrically connected, described humorous for the resonant column setting
The column that shakes is equipped with step；
Coupling ring, the coupling ring are set on the resonant column and are disposed adjacent with the step, and the coupling ring is distinguished
With the step, the resonant column Insulation Coordination；
Connectivity port, the connectivity port are installed on the conductive shell, and the inner core of the connectivity port runs through the conductive shell
It extend into the cavity, the inner core and the coupling ring are electrically connected.
2. low-frequency range cavity body filter broadband ports according to claim 1, which is characterized in that further include being dielectrically separated from
Ring, the insulating isolation ring include insulation base ring and insulation side ring, and the insulation base ring is connect with the insulation side ring, described exhausted
Edge side ring between the resonant column lateral wall and the resonant column lateral wall, the insulation base ring be located at the coupling ring with
Between the step.
3. low-frequency range cavity body filter broadband ports according to claim 1, which is characterized in that the coupling ring is described
Coatings layer or insulating blanket are provided on resonant column lateral wall.
4. low-frequency range cavity body filter broadband ports according to claim 1, which is characterized in that the resonant column includes the
One conductive column, the second conductive column and conductive sleeve；First conductive column and the cavity bottom wall are electrically connected；Described second is conductive
Column and first conductive column are electrically connected, and are provided with the step on second conductive column；The conductive sleeve is set in institute
State outside the first conductive column, described conductive sleeve one end is connected with second conductive column end face, the conductive sleeve other end with it is described
The setting of cavity bottom wall interval.
5. low-frequency range cavity body filter broadband ports according to claim 4, which is characterized in that the step is arranged in institute
The second conductive column is stated close to one end of first conductive column, the coupling ring is located above the step；Alternatively, described
One end that second conductive column is away from first conductive column is arranged in rank, and the coupling ring is located at below the step.
6. low-frequency range cavity body filter broadband ports according to claim 4, which is characterized in that first conductive column with
Second conductive column is detachably connected, and first conductive column is integrated with the conductive shell；Described second is conductive
Column is integrated with the conductive sleeve.
7. low-frequency range cavity body filter broadband ports according to claim 1, which is characterized in that the conductive shell with it is described
The opposite top surface of cavity bottom wall is equipped with dismountable lid, and the lid is equipped with through-hole, is equipped with liftable tune in the through-hole
Humorous bar.
8. low-frequency range cavity body filter broadband ports according to claim 7, which is characterized in that further include being fixed at
Nut on the lid, the screw hole of the nut is corresponding to the through-hole to be arranged, and the tuning plug is to match with the nut
The screw rod or screw of conjunction, the tuning plug passes through the screw hole of the nut and the through-hole is extend into the cavity.
9. a kind of filter, which is characterized in that including the low-frequency range cavity body filter as described in claim 1 to 8 any one
Broadband ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821162887.4U CN208539071U (en) | 2018-07-23 | 2018-07-23 | Low-frequency range cavity body filter broadband ports and filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821162887.4U CN208539071U (en) | 2018-07-23 | 2018-07-23 | Low-frequency range cavity body filter broadband ports and filter |
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| Publication Number | Publication Date |
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| CN208539071U true CN208539071U (en) | 2019-02-22 |
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| CN201821162887.4U Active CN208539071U (en) | 2018-07-23 | 2018-07-23 | Low-frequency range cavity body filter broadband ports and filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037866A (en) * | 2018-07-23 | 2018-12-18 | 京信通信系统（中国）有限公司 | Low-frequency range cavity body filter broadband ports and its width modulation method and filter |
-
2018
- 2018-07-23 CN CN201821162887.4U patent/CN208539071U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037866A (en) * | 2018-07-23 | 2018-12-18 | 京信通信系统（中国）有限公司 | Low-frequency range cavity body filter broadband ports and its width modulation method and filter |
| CN109037866B (en) * | 2018-07-23 | 2023-09-29 | 京信通信技术(广州)有限公司 | Broadband port of low-frequency cavity filter, width adjusting method of broadband port and filter |
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Effective date of registration: 20200110 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 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong 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. |