CN107331930A - The input and output coupled structure of dielectric waveguide filter and the method for controlling stiffness of coupling - Google Patents
The input and output coupled structure of dielectric waveguide filter and the method for controlling stiffness of coupling Download PDFInfo
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- CN107331930A CN107331930A CN201710648930.1A CN201710648930A CN107331930A CN 107331930 A CN107331930 A CN 107331930A CN 201710648930 A CN201710648930 A CN 201710648930A CN 107331930 A CN107331930 A CN 107331930A
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- patchhole
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- chamber
- coupling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
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Abstract
The present invention relates to wave filter technology field, the input and output coupled structure of dielectric waveguide filter, including patchhole and non-electromagnetic shield regions are disclosed；The patchhole is in medium single-chamber, the inner core for inserting radio frequency connector；The not electromagnetic shield regions are located at the medium single-chamber surface, and centered on the patchhole；The profile of the not electromagnetic shield regions is identical with the dielectric layer profile of the radio frequency connector, and the electromagnetic shield regions and the outer conductor of the radio frequency connector on the medium single-chamber surface are welded to each other.And the method for control stiffness of coupling, for by controlling the size of the patchhole in medium single-chamber and the size of connector inner core to adjust the stiffness of coupling of input and output.Compared to prior art, the beneficial effects of the invention are as follows：The coupled structure greatly reduces the volume of wave filter, while the stiffness of coupling of controllable input and output.
Description
Technical field
The present invention relates to wave filter technology field, in particular it relates to a kind of input and output coupling of dielectric waveguide filter
Structure, and using the method for the structure control stiffness of coupling.
Background technology
Wave filter is a kind of frequency selective device, can pass through specific frequency content in signal, and it is other greatly to decay
Frequency content.Waveguide filter is one kind in the wave filter used in communication system, and traditional waveguide filter is metal
Cavity body structure, centre is air, and metal material is that edge plays a part of electromagnetic shielding and structural support.Using such a mode
Wave filter has higher Q values, but volume and weight are larger, is unfavorable for installing and transports.With the development of communication system, it is desirable to
Wave filter has a filter with low insertion loss, and height suppresses, and it is big to bear power, low cost, the features such as miniaturization.Therefore use high dielectric constant material
Air part is substituted, conduction electromagnetic wave and structural support effect is played, while electromagnetic shielding action is played by silver on medium block surface, this
Sample can be substantially reduced the volume and cost of wave filter.
Waveguide filter typically uses flanged (FLGD) waveguide coaxial converter as radio frequency connector in the prior art, still
For dielectric waveguide filter, the volume of the dielectric waveguide filter of the dielectric material composition of high-k is very little
, it is inappropriate now to reuse sufficiently bulky waveguide coaxial converter and do radio frequency connector.It is smaller in order to obtain being adapted to
The input and output coupled modes of the dielectric waveguide filter product of volume are, it is necessary to which the coupled structure to input and output is improved.
The content of the invention
In order to solve the above-mentioned technical problem, knot is coupled the invention provides a kind of input and output of dielectric waveguide filter
Structure, and using the method for the structure control stiffness of coupling；The structure greatly reduces the volume of wave filter, while controllable input
The stiffness of coupling of output.
In order to realize above-mentioned technique effect, the technical solution adopted in the present invention is：The input of dielectric waveguide filter is defeated
Go out coupled structure, including patchhole and non-electromagnetic shield regions；The patchhole connects in medium single-chamber for inserting radio frequency
Connect the inner core of device；The not electromagnetic shield regions are located at the medium single-chamber surface, and centered on the patchhole；It is described not
The profile of electromagnetic shield regions is identical with the dielectric layer profile of the radio frequency connector, and the electromagnetic screen on the medium single-chamber surface
Cover region and the outer conductor of the radio frequency connector is welded to each other.
As a kind of preferred embodiment, the patchhole is blind hole, and blind hole inwall is not electromagnetically shielded.
As another preferred embodiment, the medium single-chamber is provided with coupling step；The patchhole is located at coupling step
On, and be through hole；Through-hole wall is electromagnetically shielded, and is welded with inner core.
Further, the medium single-chamber is made up of hard ceramic dielectric material.
Further, the electromagnetic shield regions are by silver layer.
The method that stiffness of coupling is controlled using the input and output coupled structure of above-mentioned dielectric waveguide filter, to pass through control
The size of patchhole in medium single-chamber processed adjusts the stiffness of coupling of input and output.
It is preferred that, the size of the patchhole include depth H, diameter D or center and the center of medium single-chamber it
Between apart from L.
It is preferred that, the size of the inner core includes diameter D ' or length H '.
Compared to prior art, the beneficial effects of the invention are as follows：
1st, size reduction.By the design of patchhole, traditional flange connection is instead of, wave filter is greatly reduced
Volume；The outer conductor of radio frequency connector and the electromagnetic shield regions of medium single-chamber weld together that there is provided good ground connection.
2nd, stiffness of coupling is controllable.By the chi for controlling the size of the patchhole in medium single-chamber and the inner core of radio frequency connector
The stiffness of coupling of very little adjustable input and output.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1；
Fig. 2 is the assembling schematic diagram of embodiment 1；
Fig. 3 is the top view of embodiment 1；
Fig. 4 is the side view of embodiment 1；
Fig. 5 is the insertion bore dia D of embodiment 1 and the graph of a relation of time delay value；
Fig. 6 is the patchhole depth H of embodiment 1 and the graph of a relation of time delay value；
Fig. 7 is the distance between the patchhole center and medium single-chamber center of embodiment 1 L and the graph of a relation of time delay value；
Fig. 8 is the inner core diameter D ' of embodiment 1 and the graph of a relation of time delay value；
Fig. 9 is the length of inner core H ' of embodiment 1 and the graph of a relation of time delay value；
Figure 10 is the structural representation of embodiment 2；
Figure 11 is the assembling schematic diagram of embodiment 2；
Figure 12 is the top view of embodiment 2；
Figure 13 installs side view for the positive of embodiment 2；
Figure 14 is the reverse installation side view of embodiment 2；
Figure 15 is the coupling step patchhole depth H of embodiment 2 and the graph of a relation of time delay value；
Figure 16 is the coupling step patchhole diameter D of embodiment 2 and the graph of a relation of time delay value；
Figure 17 inserts in the hole the distance between the heart and medium single-chamber center L and time delay value for the coupling step of embodiment 2
Graph of a relation；
Mark corresponding component names as follows in accompanying drawing：1 is medium single-chamber, wherein 11 be patchhole, 12 be not electromagnetic screen
Region is covered, 13 be electromagnetic shield regions, and 14 be coupling step；2 be radio frequency connector, and 21 be inner core, and 22 be dielectric layer, and 23 be outer
Conductor.L is the distance between center of center and the medium single-chamber of patchhole, and H is the depth of patchhole, and D is straight for patchhole
Footpath；D ' is the diameter of inner core, and H ' is the length of inner core.The transverse axis of coordinate system is corresponding size value, unit in Fig. 5-9,15-17
For mm；Transverse axis is time delay value, and unit is ns.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As Figure 1-4, the present invention can be implemented as follows, the input and output coupling knot of dielectric waveguide filter
Structure, is cooperated with medium single-chamber 1 by radio frequency connector 2 and constituted.The input and output coupled structure includes patchhole 11 and not electric
Magnetic screen region 12；The patchhole 11 is blind hole, blind hole inwall is not electromagnetically shielded in medium single-chamber 1, is penetrated for inserting
The inner core 21 of frequency connector 2, plays coupling；The not electromagnetic shield regions 12 are located at the surface of medium single-chamber 1, and with institute
Centered on stating patchhole 11；The profile phase of dielectric layer 22 of the profile of the not electromagnetic shield regions 12 and the radio frequency connector 2
Together, and the electromagnetic shield regions 13 and the outer conductor 23 of the radio frequency connector 2 on the surface of medium single-chamber 1 are welded to each other, do
Ground connection acts on.The electric field that radio frequency connector inner core 21 is stretched at patchhole 11, inner core 21 and the electricity of the resonant frequency of medium single-chamber 1
Field direct-coupling, input or output energy.
Medium single-chamber described in the present embodiment 1 is made up of hard ceramic dielectric material, and the dielectric material has higher Jie
Electric constant and relatively low dielectric loss, while having the structural support of high intensity.The medium designed by the dielectric material is filtered
Ripple utensil has miniaturization, and high stability, low-loss is lightweight, the low a variety of advantages of cost, is well positioned to meet following wave filter
Minimize, it is high performance require.On the other hand, the electromagnetic shield regions 13 are that, by silver layer, silver-colored electric conductivity is good, oxidation
Speed is slow and oxidation product is electrically conductive, and thermal conductivity is good, and medium-resistance is splendid, and shield effectiveness is splendid.
The method that stiffness of coupling is controlled using the input and output coupled structure of above-mentioned dielectric waveguide filter, to pass through
The size of the patchhole 11 in medium single-chamber 1 and the size of the inner core 21 of radio frequency connector 2 is controlled to adjust the coupling of input and output
Close intensity.The size of the patchhole 11 includes depth H, diameter D or the distance between center and the center of medium single-chamber 1 L.Institute
Stating the size of inner core includes diameter D ' or length H '.The dielectric waveguide filter volume designed is smaller, and weight is lighter, assembling
It is simpler.
For dielectric waveguide filter input and output stiffness of coupling, typically judged using time delay value, the smaller table of time delay value
Show that stiffness of coupling is bigger.As can be seen that stiffness of coupling drastically weakens with the diameter D of patchhole 11 increase from Fig. 5-9；Coupling
Intensity weakens with the increase of the depth H of patchhole 11；Stiffness of coupling with the center of patchhole 11 and the center of medium single-chamber 1 spacing
Weaken from L increase；Stiffness of coupling is strengthened with the diameter D ' of inner core 21 increase；Stiffness of coupling with the length H ' of inner core 21 increasing
Plus and strengthen.
Generally, when have selected radio frequency connector 2, its inner core 21 diameter D ' is just it has been determined that therefore patchhole 11 is straight
Footpath D can be decided；And the depth H of patchhole 11 typically changes and changed according to length of inner core H '.Wherein inner core 21 is to stretch into
Patchhole 11, therefore the diameter D ' of inner core 21 is less than the diameter D of patchhole 11；The length H ' of inner core 21 is less than the depth H of patchhole 11.So
In the design phase, it can be changed by the diameter D of patchhole 11, the depth H of patchhole 11, patchhole 11 apart from L and length of inner core H '
Stiffness of coupling；In the finished product stage, stiffness of coupling can be changed by the depth H of patchhole 11 and the length H ' of inner core 21.
Embodiment 2
As shown in figures 10-14, compared to embodiment 1, the present embodiment has following different designs feature, in medium single-chamber 1
Coupling step 14 is set, and coupling step 14 is designed with medium single-chamber 1 for integral type, the patchhole 11 is located at coupling step 14
On, and be through hole, that is, the height for coupling step 14 is equal to the depth H of the patchhole 11；Through-hole wall is electromagnetically shielded, with inner core
21 welding.Inner core 21, by being welded into one, passes through magnetic field and the magnetic field of the resonant frequency of medium single-chamber 1 with insertion through hole 11
Coupled, input or export energy.
The method that stiffness of coupling is controlled using the input and output coupled structure of above-mentioned dielectric waveguide filter, to pass through
The size of the patchhole 11 in medium single-chamber 1 is controlled to adjust the stiffness of coupling of input and output.The size bag of the patchhole 11
Include depth H (height for coupling step 14), diameter D or the distance between center and the center of medium single-chamber 1 L.Design
Dielectric waveguide filter volume it is smaller, weight is lighter, assemble it is simpler.Through-hole type design can make radio frequency connector have positive peace
Dress and reversely installation two ways, and two ways does not influence the size of coupling amount.
As can be seen that stiffness of coupling weakens with the increase of the depth H of coupling table patchhole 11 from Figure 15-17；With coupling
The diameter D of step patchhole 11 increase and weaken；With the increase between the center of patchhole 11 and the center of medium single-chamber 1 apart from L
And strengthen.
The input and output coupled structure of dielectric waveguide filter in the present invention, can be applied in a variety of different devices
On, including wave filter, duplexer, multi-circuit combiner, and other devices spreaded to according to this principle.
Above-mentioned word is presently preferred embodiments of the present invention, it is therefore intended that illustrates the present invention, is not intended to limit the invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in
Within protection scope of the present invention.
Claims (8)
1. the input and output coupled structure of dielectric waveguide filter, it is characterised in that：Including patchhole (11) and it is not electromagnetically shielded
Region (12)；
The patchhole (11) is in medium single-chamber (1), the inner core (21) for inserting radio frequency connector (2)；
The not electromagnetic shield regions (12) are located at medium single-chamber (1) surface, and centered on the patchhole (11)；
The profile of the not electromagnetic shield regions (12) is identical with dielectric layer (22) profile of the radio frequency connector (2), and institute
The electromagnetic shield regions (13) on matter single-chamber (1) surface are given an account of to be welded to each other with the outer conductor (23) of the radio frequency connector (2).
2. the input and output coupled structure of dielectric waveguide filter according to claim 1, it is characterised in that：The insertion
Hole (11) is blind hole, and blind hole inwall is not electromagnetically shielded.
3. the input and output coupled structure of dielectric waveguide filter according to claim 1, it is characterised in that：The medium
Single-chamber is provided with coupling step (14)；The patchhole (11) is located on coupling step (14), and is through hole；Through-hole wall electromagnetism
Shielding, is welded with inner core (21).
4. the input and output coupled structure of the dielectric waveguide filter according to claim any one of 1-3, it is characterised in that：
The medium single-chamber (1) is made up of hard ceramic dielectric material.
5. the input and output coupled structure of the dielectric waveguide filter according to claim any one of 1-3, it is characterised in that：
The electromagnetic shield regions (13) are that electromagnetic shield regions (12) are not by silver-colored region by silver layer.
6. the input and output coupled structure of the dielectric waveguide filter described in application claim any one of 1-3 is strong to control to couple
The method of degree, it is characterised in that：By controlling the size of the patchhole (11) in medium single-chamber (1) and the inner core of connector (2)
(21) size adjusts the stiffness of coupling of input and output.
7. the method for control stiffness of coupling according to claim 6, it is characterised in that：The size bag of the patchhole (11)
Include the distance between depth H, diameter D or center and the center of medium single-chamber (1) L.
8. the method for control stiffness of coupling according to claim 6, it is characterised in that：The size of the inner core (21) includes
Diameter D ' or length H '.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100673503 | 2017-02-07 | ||
| CN201710067350 | 2017-02-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376818A (en) * | 2018-04-26 | 2018-08-07 | 苏州艾福电子通讯有限公司 | A kind of bimodulus ceramic waveguide filter |
| CN109950674A (en) * | 2019-03-29 | 2019-06-28 | 华南理工大学 | Medium Wave Guide, electromagnetic wave conversion apparatus and microwave device |
| CN110112520A (en) * | 2019-06-19 | 2019-08-09 | 广东国华新材料科技股份有限公司 | A kind of dielectric waveguide filter and its port coupled structure |
| CN110459840A (en) * | 2019-06-06 | 2019-11-15 | 深圳市大富科技股份有限公司 | Communication equipment, dielectric filter, medium block |
| CN111342187A (en) * | 2020-03-10 | 2020-06-26 | 京信通信技术(广州)有限公司 | Filter and dielectric resonator thereof |
| CN112151924A (en) * | 2019-06-28 | 2020-12-29 | 中兴通讯股份有限公司 | Dielectric single-cavity dielectric waveguide filter |
| CN114678675A (en) * | 2022-03-07 | 2022-06-28 | 电子科技大学 | Device for obtaining established coupling coefficient under low-temperature vacuum condition |
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| CN202259605U (en) * | 2010-05-17 | 2012-05-30 | Cts公司 | Dielectric waveguide filter with structure used for bandwidth adjustment |
| CN103972621A (en) * | 2014-04-22 | 2014-08-06 | 深圳三星通信技术研究有限公司 | Mixed dielectric waveguide filter |
| CN207183490U (en) * | 2017-02-07 | 2018-04-03 | 四川省韬光通信有限公司 | The input and output coupled structure of dielectric waveguide filter |
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2017
- 2017-08-01 CN CN201710648930.1A patent/CN107331930A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259605U (en) * | 2010-05-17 | 2012-05-30 | Cts公司 | Dielectric waveguide filter with structure used for bandwidth adjustment |
| CN103972621A (en) * | 2014-04-22 | 2014-08-06 | 深圳三星通信技术研究有限公司 | Mixed dielectric waveguide filter |
| CN207183490U (en) * | 2017-02-07 | 2018-04-03 | 四川省韬光通信有限公司 | The input and output coupled structure of dielectric waveguide filter |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376818A (en) * | 2018-04-26 | 2018-08-07 | 苏州艾福电子通讯有限公司 | A kind of bimodulus ceramic waveguide filter |
| CN109950674A (en) * | 2019-03-29 | 2019-06-28 | 华南理工大学 | Medium Wave Guide, electromagnetic wave conversion apparatus and microwave device |
| CN109950674B (en) * | 2019-03-29 | 2024-05-31 | 华南理工大学 | Dielectric waveguide, electromagnetic wave conversion device and microwave device |
| CN110459840A (en) * | 2019-06-06 | 2019-11-15 | 深圳市大富科技股份有限公司 | Communication equipment, dielectric filter, medium block |
| CN110112520A (en) * | 2019-06-19 | 2019-08-09 | 广东国华新材料科技股份有限公司 | A kind of dielectric waveguide filter and its port coupled structure |
| CN112151924A (en) * | 2019-06-28 | 2020-12-29 | 中兴通讯股份有限公司 | Dielectric single-cavity dielectric waveguide filter |
| CN111342187A (en) * | 2020-03-10 | 2020-06-26 | 京信通信技术(广州)有限公司 | Filter and dielectric resonator thereof |
| WO2021179758A1 (en) * | 2020-03-10 | 2021-09-16 | 京信通信技术(广州)有限公司 | Filter and dielectric resonator thereof |
| CN111342187B (en) * | 2020-03-10 | 2021-11-02 | 京信通信技术(广州)有限公司 | Filter and dielectric resonator thereof |
| CN114678675A (en) * | 2022-03-07 | 2022-06-28 | 电子科技大学 | Device for obtaining established coupling coefficient under low-temperature vacuum condition |
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