CN206893772U - A kind of ceramic waveguide wave filter - Google Patents
A kind of ceramic waveguide wave filter Download PDFInfo
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- CN206893772U CN206893772U CN201720712275.7U CN201720712275U CN206893772U CN 206893772 U CN206893772 U CN 206893772U CN 201720712275 U CN201720712275 U CN 201720712275U CN 206893772 U CN206893772 U CN 206893772U
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- waveguide
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Abstract
The utility model discloses a kind of ceramic waveguide wave filter, including waveguide ceramic monomer, the waveguide ceramic monomer is at least disposed with three waveguide resonators along its length, two a upside exports blind hole with radiofrequency signal input blind hole, another upside with radiofrequency signal in the waveguide resonator at both ends respectively, each waveguide resonator bottom is respectively provided with TEM nibs, and the TEM nibs are blind cylindrical hole.In the ceramic waveguide wave filter, because it is provided with TEM nibs in the bottom of each waveguide resonator, the volume of each waveguide resonator can be effectively reduced by setting TEM nibs, and large effect will not be produced to quality factor simultaneously, but can effectively reduce overall volume.
Description
Technical field
Technical field of filtering is the utility model is related to, more specifically to a kind of ceramic waveguide wave filter.
Background technology
With the fast development of mobile communication, airmanship and electronic countermeasure, the size and performance of existing wave filter are changed
Enter to be proposed higher requirement.Insertion loss, with outer no spurious response, Out-of-band rejection, Q values and size be wave filter core
Key index, how on the premise of higher performance index is provided, the size for reducing ceramic waveguide wave filter is the skill of this area
Art problem.
In summary, the problem of ceramic waveguide wave filter volume is excessive how is efficiently solved, is current art technology
Personnel's urgent problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of ceramic waveguide wave filter, the ceramic waveguide wave filter
The problem of ceramic waveguide wave filter volume is excessive can be efficiently solved.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of ceramic waveguide wave filter, including waveguide ceramic monomer, the waveguide ceramic monomer along its length at least according to
Secondary to be provided with three waveguide resonators, two a upside has radiofrequency signal in the waveguide resonator at both ends respectively
Input blind hole, another upside have radiofrequency signal output blind hole, and each waveguide resonator bottom is respectively provided with TEM nibs,
The TEM nibs are blind cylindrical hole.
Preferably, the width of two waveguide resonators of arbitrary neighborhood is unequal.
Preferably, each waveguide resonator is in cuboid-type.
The each waveguide resonator for being preferably located at middle part is provided with plated-through hole group.
Preferably, plated-through hole group described in every group is symmetrical arranged on the width of the waveguide ceramic monomer.
Preferably, plated-through hole group described in every group includes multiple plated-through holes set in the width direction.
Preferably, the conductive layer of the waveguide ceramic monomer outer application is silver coating.
A kind of ceramic waveguide wave filter provided by the utility model, the specific ceramic waveguide wave filter include waveguide ceramics
Monomer, wherein waveguide ceramic monomer is typically made of ceramics, and is at least set successively along its length on waveguide ceramic monomer
Three waveguide resonators are equipped with, and make two to have radiofrequency signal defeated on the upside of one in the waveguide resonator at both ends respectively
Enter blind hole, another upside has radiofrequency signal output blind hole.In the ceramic waveguide wave filter, the bottom of each waveguide resonator
TEM nibs are provided with, the specific TEM nibs are blind cylindrical hole.
According to above-mentioned technical scheme, it is recognised that in the ceramic waveguide wave filter, the bottom of each waveguide resonator
TEM nibs are provided with, the specific TEM nibs are blind cylindrical hole.So that each waveguide resonator forms TEM mould resonance
Device.In the ceramic waveguide wave filter, because TEM nibs are provided with the bottom of each waveguide resonator, by setting TEM moulds
Hole can be effectively reduced the volume of each waveguide resonator, and will not produce large effect to quality factor simultaneously, but energy
It is enough effectively to reduce overall volume.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the lower structure schematic diagram for the ceramic waveguide wave filter that the utility model embodiment provides；
Fig. 2 is the upper structure schematic diagram for the ceramic waveguide wave filter that the utility model embodiment provides.
Marked in accompanying drawing as follows：
Waveguide resonator 1, radiofrequency signal input blind hole 2, radiofrequency signal output blind hole 3, plated-through hole 4, TEM nibs 5.
Embodiment
The utility model embodiment discloses a kind of ceramic waveguide wave filter, to efficiently solve ceramic waveguide body
The problem of product is excessive.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-Fig. 2 is referred to, Fig. 1 is the lower structure signal for the ceramic waveguide wave filter that the utility model embodiment provides
Figure；Fig. 2 is the upper structure schematic diagram for the ceramic waveguide wave filter that the utility model embodiment provides.
In a kind of specific embodiment, a kind of ceramic waveguide wave filter is present embodiments provided, the specific ceramic waveguide
Wave filter includes waveguide ceramic monomer, and wherein waveguide ceramic monomer is typically made of ceramics, specifically, metatitanic acid can be used
Barium, other ceramic materials with high-k can also be used certainly, need to coat on the outside of general waveguide ceramic monomer
Conductive layer, specific conductive layer can be conductive ink layers, preferably use silver coating herein.And along length on waveguide ceramic monomer
Degree direction be at least disposed with three waveguide resonators 1, it is necessary to explanation, in order to ensure effect, herein preferably each ripple
It is rectangular to lead resonator 1.And making two, a upside has radiofrequency signal defeated in the waveguide resonator 1 at both ends respectively
Enter blind hole 2, another upside has radiofrequency signal output blind hole 3.Wherein radiofrequency signal input blind hole 2 is used to install input spy
Head, wherein radiofrequency signal output blind hole 3 be used for install output probe, usually using 50 ohm coaxials probe realize input coupling and
Output coupling.
In the present embodiment, in the ceramic waveguide wave filter, the bottom of each waveguide resonator 1 is provided with TEM moulds
Hole 5 (transverse electromagnetic nib), the specific TEM nibs 5 are blind cylindrical hole.So that each waveguide resonator 1 forms TEM mould resonance
Device.In the ceramic waveguide wave filter, because TEM nibs 5 are provided with the bottom of each waveguide resonator 1, by setting TEM
Nib 5 can be effectively reduced the volume of each waveguide resonator 1, and will not produce large effect to quality factor simultaneously,
But it can effectively reduce overall volume.
Further, the width of preferred two waveguide resonators 1 of arbitrary neighborhood is unequal herein, so that ceramic waveguide is humorous
The device 1 that shakes forms non-uniform width waveguide resonator 1, and uneven width TEM resonator filters can further push away fundamental frequency
High-order harmonic wave, effectively to ensure overall quality.It should be noted that the width of two waveguide resonators 1 of arbitrary neighborhood
It is unequal, even if the width of two neighboring waveguide resonator 1 has certain difference.It should be noted that can be big with width
Small arranged in a crossed manner successively or width is gradually reduced or gradually increased.It is herein preferably, alternate in order to reach more preferable effect
The width of waveguide resonator 1 it is equal, i.e., from one end to the other end, the width of waveguide resonator 1 of odd positions is consistent, and even bit
The width of waveguide resonator 1 put is consistent.In practice, the mode frequency of waveguide resonator 1 is the function of its physical size, so
Can then may be used by the gap between the fundamental frequency for the geometry increase waveguide resonator 1 for changing resonator and spurious resonance
Stopband response can be improved with the waveguide resonator 1 by different in width, and by changing the length of resonator, fundamental frequency can be made
Keep identical, this method can effectively eliminate the higher resonance again of frequency or higher order pattern.It should be noted that in reality
Border is in use, because the size of two waveguide resonators 1 is different, and specifically, their width and length can pass through following two public affairs
Formula calculates：
As above in formula, wherein WnRefer to the width of waveguide resonator 1, LnThe length of waveguide resonator 1 is referred to, its
Middle fcRefer to cut-off frequency, f1The first spurious mode frequency is referred to, c refers to the free space light velocity, f0Refer to resonance frequency
Rate.Compared to clean width waveguide filter add resonator width leverage, the application is by using different width
The resonator of degree responds to improve band stray, and the difference of width and length provides more freedom of extension second mode frequency
Degree, so can make ceramic waveguide wave filter that there is more preferable band stray to respond.Uneven width TEM resonator filters enter
The high-order harmonic wave for having raised fundamental frequency of one step.
Further, plated-through hole group is preferably provided with each waveguide resonator 1 positioned at middle part herein, is needed
It is noted that the waveguide filter positioned at middle part, refers to and remove both ends waveguide resonator 1, that is, removing has radiofrequency signal
Input the waveguide filter of blind hole 2 and the waveguide filter with radiofrequency signal output blind hole 3.Metal in waveguide ceramic monomer
Changing sets of vias can be with separating ceramic waveguide part composition waveguide resonator.Plated-through hole group can provide inductive resonance device
Between couple, the distance between plated-through hole 4 by changing fixed diameter, it is possible to achieve to the plated-through hole of fixed diameter
4 inductance value regulation.
Further, every group of plated-through hole group is symmetrical arranged on the width of waveguide ceramic monomer.Due to metal
Changing the perpendicular interconnection of through hole 4 makes the direction of field change suddenly, will inspire higher mode, so as to produce discontinuity effect
Should, and plated-through hole 4 is symmetrically arranged on the width of waveguide ceramic monomer, it can effectively suppress higher mode.Wherein
Every group of plated-through hole group can include one or more plated-through holes 4.When every group of plated-through hole group includes multiple metals
When changing through hole 4, the width arrangement of the plated-through hole 4 of the group along waveguide ceramic monomer.Specifically, every group of plated-through hole
The quantity of plated-through hole 4 in group can also be according to parameter settings such as specific resonant frequencies.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (7)
1. a kind of ceramic waveguide wave filter, including waveguide ceramic monomer, the waveguide ceramic monomer is along its length at least successively
Three waveguide resonators are provided with, two a upside has radiofrequency signal defeated in the waveguide resonator at both ends respectively
Enter blind hole, another upside has radiofrequency signal output blind hole, it is characterised in that each waveguide resonator bottom is respectively provided with
TEM nibs, the TEM nibs are blind cylindrical hole.
2. ceramic waveguide wave filter according to claim 1, it is characterised in that two wave guide resonances of arbitrary neighborhood
The width of device is unequal.
3. ceramic waveguide wave filter according to claim 2, it is characterised in that each waveguide resonator is in rectangular
Build.
4. ceramic waveguide wave filter according to claim 3, it is characterised in that each wave guide resonance positioned at middle part
Device is provided with plated-through hole group.
5. ceramic waveguide wave filter according to claim 4, it is characterised in that plated-through hole group is described described in every group
It is symmetrical arranged on the width of waveguide ceramic monomer.
6. ceramic waveguide wave filter according to claim 5, it is characterised in that plated-through hole group described in every group includes more
The individual plated-through hole set in the width direction.
7. ceramic waveguide wave filter according to claim 6, it is characterised in that the waveguide ceramic monomer outer application
Conductive layer is silver coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720712275.7U CN206893772U (en) | 2017-06-19 | 2017-06-19 | A kind of ceramic waveguide wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720712275.7U CN206893772U (en) | 2017-06-19 | 2017-06-19 | A kind of ceramic waveguide wave filter |
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| Publication Number | Publication Date |
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| CN206893772U true CN206893772U (en) | 2018-01-16 |
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ID=61315843
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720712275.7U Active CN206893772U (en) | 2017-06-19 | 2017-06-19 | A kind of ceramic waveguide wave filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384487A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter and communication device |
| CN111384541A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter and communication device |
| CN112840508A (en) * | 2018-12-26 | 2021-05-25 | 华为技术有限公司 | Dielectric filter, duplexer and communication equipment |
-
2017
- 2017-06-19 CN CN201720712275.7U patent/CN206893772U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112840508A (en) * | 2018-12-26 | 2021-05-25 | 华为技术有限公司 | Dielectric filter, duplexer and communication equipment |
| US11909086B2 (en) | 2018-12-26 | 2024-02-20 | Huawei Technologies Co., Ltd. | Dielectric filter, duplexer, and communications device |
| CN111384487A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter and communication device |
| CN111384541A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter and communication device |
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