CN109103553A - A kind of manufacturing method and its application of medium block - Google Patents
A kind of manufacturing method and its application of medium block Download PDFInfo
- Publication number
- CN109103553A CN109103553A CN201810983591.7A CN201810983591A CN109103553A CN 109103553 A CN109103553 A CN 109103553A CN 201810983591 A CN201810983591 A CN 201810983591A CN 109103553 A CN109103553 A CN 109103553A
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- medium block
- dielectric
- medium
- manufacturing
- waveguide filter
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2002—Dielectric waveguide filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
- H01P11/006—Manufacturing dielectric waveguides
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- Manufacturing & Machinery (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of manufacturing methods of medium block, including, multiple dielectric resonance portions are fixedly connected；Therebetween, at least one middle part is set between dielectric resonance portion to be fixedly connected with dielectric resonance portion；Coupling bandwidth between the dielectric resonance portion that the middle part connects it is less than the 10% of the bandwidth of operation of the dielectric waveguide filter using the medium block.The invention also discloses the types of applications of the manufacturing method of medium block；The present invention by originally must independent multiple medium blocks one is combined under the premise of not changing coupled relation, use the method in the present invention, the assembling process of dielectric waveguide filter can be greatly simplified, it reduces time-consuming, defect rate brought by position dimension inaccuracy when because of assembly is also reduced, to improve product yield.
Description
Technical field
The present invention relates to the manufacturing methods of communication device components, and in particular to a kind of manufacturing method of medium block and its answers
With.
Background technique
With the development of wireless communication technique, wireless telecom equipment increasingly pursues miniaturization and filter with low insertion loss.Compared to traditional
Metal cavity waveguide filter, dielectric waveguide filter have that small in size, Insertion Loss is small, big, advantages such as at low cost of bearing power.It can
To be applied to wireless base station, rf terminal, in the equipment such as radio frequency or microwave transmitting and receiving component.
Existing dielectric waveguide filter, especially for work under the TE mode, equipped with adjacent and do not couple mutually
The dielectric waveguide filter of medium block is all made of the mode that physically separated multiple medium blocks are assembled and produces, that is,
After first making medium block independent, their assembly are got up again when assembly；Such mutually independent structure is led
It causes medium block type relatively more, a variety of frock clamps is needed when production management and assembling and setting.Meanwhile Medium Wave Guide is filtered
The production of wave device is very high for the required precision of medium block assembling and setting, and deviation once occur in medium block position or alignment relation
Tremendous influence will be caused to the performance of entire dielectric waveguide filter；Therefore in process of production often in order to accurately pacifying
It puts, be aligned these mutually independent medium blocks, need being dismounted and being debugged repeatedly, cause assembling process cumbersome, time-consuming；It is right
Production management, cost control and product yield cause very big influence.
Summary of the invention
The invention is intended to provide a kind of manufacturing method of medium block, medium block that is adjacent and not coupling mutually is equipped with to reduce
Dielectric waveguide filter production when assembly difficulty, and then reduce production cost, improve the yields of product.
The manufacturing method of medium block in the present invention, comprising:
Multiple dielectric resonance portions are fixedly connected；
Therebetween, at least one middle part is set between dielectric resonance portion to be fixedly connected with dielectric resonance portion；
Coupling bandwidth between the dielectric resonance portion that the middle part connects it is less than the medium using the medium block
The 10% of the bandwidth of operation of waveguide filter.
It couples bandwidth (CouplingBandwidths, CBWs), is that the another of stiffness of coupling indicates, it can be directly and square
Just it is measured using vector analysis instrument (Vector Network Analyser), is the actual production of filter and designs and develops
The parameter often used.
It is humorous to each medium on the medium block produced by being in advance fixedly connected with multiple dielectric resonance portions in the present invention
Vibration portion position and structure size are controlled in production, and the position and structure size in dielectric resonance portion is fixed, and are being assembled
When into dielectric waveguide filter, can integrally it assemble, it is no longer necessary to being dismounted and being debugged repeatedly, in specific
Between portion connect dielectric resonance portion between coupling bandwidth be less than use the medium block dielectric waveguide filter bandwidth of operation
10%, be not enough to impact the overall performance of dielectric waveguide filter, be equivalent between dielectric resonance portion and do not couple.
The present invention by dielectric resonance portion by the connection of middle part by originally must independent multiple medium blocks do not changing
It is integrated under the premise of coupled relation, manufactured medium block can be substantially reduced equipped with medium that is adjacent and not coupling mutually
Assembly difficulty of the dielectric waveguide filter of block in production, simplifies the assembling process of such dielectric waveguide filter, reduces consumption
When, defect rate brought by position dimension inaccuracy when because of assembly is also reduced, to improve product yield.
It further, further include that the dielectric resonance portion and middle part are integrally formed using dielectric material and are made.
Medium Wave Guide filtering to a certain specifications and models, the quantity for the medium block for needing to produce greatly reduce, accordingly
Also the type of fixture required for just reducing, simplifies production management, optimizes cost.
Further, the middle part includes the interconnecting piece for being connected between the dielectric resonance portion, and for every
Spacer portion from the dielectric resonance portion.
In the dielectric resonance portion of TE mode, intermediate electromagnetic field is very strong, more weaker toward edge electromagnetic field, in adjacent Jie
The spacer portion of a spacer medium resonant structure is added among matter resonant structure, the part of strong-electromagnetic field is kept apart, only retains electromagnetism
The weak part in field is connected with each other；Due to intermediate electromagnetic field intensity, edge electromagnetic field is weak, and such integral structure makes dielectric resonance
Coupling between portion can be very weak, and strap width substantially reduces, and the coupling bandwidth between dielectric resonance portion is small for simple and easy realizing
In the 10% of the bandwidth of operation of the dielectric waveguide filter using the medium block.
It further, further include opening up gap between the dielectric resonance portion and forming the spacer portion.
Such structure is extremely simple, it is easy to produce in be manufactured.
Further, the coupling bandwidth between the dielectric resonance portion that the middle part connects it, which is less than, uses the medium block
Dielectric waveguide filter bandwidth of operation 5%, greater than the 2% of the bandwidth of operation.
There is better equivalent performance, while directly proportional by the size that strap is wider than interconnecting piece, and the size of interconnecting piece
It is directly proportional to bonding strength, it is inversely proportional with molding difficulty, this preferred scheme had not only been able to maintain enough bonding strengths, but also made coupling
Crossed belt is wide very small.
Further, the dielectric material uses ceramic material.
The dielectric material performance is good, small in size, is also convenient for forming.
The invention further relates to a kind of manufacturing methods of dielectric waveguide filter, including use one or more medium blocks,
In at least one medium block be made of the above method.
Made using the manufacturing method of the dielectric waveguide filter as having used the medium block as made by the above method
The production cost for obtaining dielectric waveguide filter is minimized, and yields is improved, and the production time is reduced.
The invention further relates to a kind of manufacturing methods of electromagnetic wave device, including using the system by above-mentioned dielectric waveguide filter
Make dielectric waveguide filter made from method.
The electromagnetic wave device, as having used dielectric waveguide filter block obtained by the above method, so that production cost
It is minimized.
Further, the electromagnetic wave device is aircraft, radar, base station or satellite.
It is all the large scale equipment for needing to use dielectric waveguide filter, the reduction of dielectric waveguide filter cost is also brought
The reduction of these large scale equipment costs.
Detailed description of the invention
Fig. 1 is the normal axomometric drawing of one of embodiment of the present invention medium block.
Fig. 2 is the graph of relation of the overall width of the coupling bandwidth and interconnecting piece between the dielectric resonance portion in Fig. 1.
Fig. 3 is the top view of another medium block of the medium block being different from Fig. 1 in the embodiment of the present invention.
Fig. 4 is the top view of another medium block of the medium block being different from Fig. 3 in the embodiment of the present invention.
Fig. 5 is the top view of another medium block of the medium block being different from Fig. 4 in the embodiment of the present invention.
Fig. 6 is the top view of another medium block of the medium block being different from Fig. 5 in the embodiment of the present invention.
Fig. 7 is the mounting structure schematic diagram of the medium block in the dielectric waveguide filter in the embodiment of the present invention.
The S parameter curve graph of dielectric waveguide filter in Fig. 8 Fig. 7；
The S parameter curve graph of dielectric waveguide filter comparative example in Fig. 9 the present embodiment；
Figure 10 is the schematic block diagram of the base station in the embodiment of the present invention.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference of the Fig. 1 into Fig. 5 includes: dielectric resonance portion 1, interconnecting piece 2, spacer portion 3.
The embodiment of the invention provides a kind of manufacturing methods of medium block, comprising:
Ceramics are integrally formed two dielectric resonance portions side by side by the way of sintering, passed through as dielectric material
The mode for setting type core on mold between the type chamber in two dielectric resonance portions, molded between two dielectric resonance portions gap formed between
Part except portion, gap is then shaped to interconnecting piece, and spacer portion and interconnecting piece collectively constitute middle part；Dielectric resonance portion is in
Between the position and structure size in portion be controlled by the mold for ceramic post sintering, the consistency of product is available well
Guarantee.
Manufactured medium block is substantially as shown in Figure 1, and the width of the medium block is 6.75mm.
In the dielectric resonance portion of TE mode, intermediate electromagnetic field is very strong, more weaker toward edge electromagnetic field.Adjacent two
A gap is added among block dielectric resonance portion, the part of strong-electromagnetic field is kept apart, only keeps edge portions electromagnetic field weak
Part connects；Due to intermediate electromagnetic field intensity, edge electromagnetic field is weak, and such integral structure bring coupling can be very weak.Its
The relation curve of the width of bandwidth (representing stiffness of coupling) and interconnecting piece is coupled as shown in Fig. 2, the horizontal axis in figure is in Fig. 1
The overall width of interconnecting piece, unit is millimeter (mm), and the longitudinal axis is then that bandwidth is coupled brought by interconnecting piece, and unit is megahertz
(MHz), the other sizes of medium block do not have any influence to coupling bandwidth brought by interconnecting piece, and therefore not to repeat here；And it is somebody's turn to do
Medium block is applied to a job under TE mode, and bandwidth of operation is the dielectric waveguide filter of 100MHz；
As we can see from the figure:
When the overall width of interconnecting piece is less than 2.4mm, it is ensured that it is (low to be less than 10MHZ for coupling bandwidth brought by it
In the 10% of bandwidth of operation), coupling bandwidth is enough small at this time, is not enough to influence the overall performance of dielectric waveguide filter
, that is, can be considered two dielectric resonance portions " not coupling "；
When the overall width of interconnecting piece is less than 2.1mm；It can guarantee that its brought coupling bandwidth is less than 5MHZ and (is lower than
The 5% of bandwidth of operation)；
It is brought to couple bandwidth only 4MHZ when the overall width of interconnecting piece is equal to 2mm；
And if coupling bandwidth brought by it is dropped to 2MHz (the 2% of bandwidth of operation), it needs overall width
It reduces to 1.6mm；
The decline of overall width certainly will bring the reduction of bonding strength and form the rising of difficulty.
Coupling bandwidth drops to the overall width of reduction needed for 4MHz only 0.4mm from 10MHZ, however, by curve in figure it is found that
Coupling bandwidth gradually slows down with the speed of overall width reduction later, so continuing to reduce interconnecting piece to reduce coupling bandwidth
Overall width, sacrifice bonding strength are obviously lost more than gain, so the present embodiment has preferably used 2mm as the beam overall of interconnecting piece
Degree, had not only been able to maintain enough bonding strengths, but also made coupling bandwidth very small.
And in further embodiments, selection is so that coupling bandwidth drops to the connection between the 2%~5% of bandwidth of operation
Portion's overall width is also can property row.
In some embodiments of the invention other, according to resonant cavity needed for specific different medium waveguide filter for
The different layout of medium block needs, and can also take the connection pattern different from the medium block in Fig. 1, including but not limited to following
Example:
A kind of medium block as shown in Figure 3, the at L-shaped shape arrangement in three dielectric resonance portions, does not couple each other；
A kind of medium block as shown in Figure 4, three dielectric resonance portions do not couple each other at rounded projections arranged；
A kind of medium block as shown in Figure 5, two dielectric resonance portions side by side, therebetween along unified straight line, are equipped with a plurality of
Independent gap, quantity can be as shown in the figure two, but not limited to this, it can be more.
A kind of connection type of medium block as shown in FIG. 6, two dielectric resonance portions side by side, therebetween only middle part phase
Even, interconnecting piece two sides are using the through slot that is open as spacer portion.
The common feature of these medium blocks is all under TE mode, and the coupling width between dielectric resonance portion is not enough to thereon
The overall performance of dielectric waveguide filter is impacted；Simultaneously as using integrated design and manufacture, dielectric resonance portion
Position and structure size fixed, when being assembled in dielectric waveguide filter, can integrally assemble, it is no longer necessary to anti-
Multiple being dismounted and being debugged, and simplifies that assembling process is cumbersome, reduces time-consuming, is also reduced because position dimension is not when assembly
Defect rate brought by accurate, to improve product yield；Medium Wave Guide filtering to a certain specifications and models, needs to give birth to
The quantity of the medium block of production greatly reduces, and the type of fixture required for also just reducing accordingly simplifies production management, excellent
Cost is changed.
The embodiment of the invention also provides a kind of manufacturing methods of dielectric waveguide filter, including, using two medium blocks
It is assembled, one of them is as obtained by the manufacturing method of the medium block in the present invention.Jie in the dielectric waveguide filter
Mass mounting structure is basic as shown in fig. 7, the feed section of the dielectric waveguide filter is not shown in the figure.
Appended drawing reference in Fig. 7 includes: first medium block 1, first medium resonant structure 11, second medium resonant structure 12,
Three dielectric resonance portions 13, coupling aperture 14, gap 15, second medium block 2.
Dielectric waveguide filter includes first medium block 1 and second medium block 2 stacked on top of one another, and first medium block 1
Then contain sequentially connected first medium resonant structure 11, second medium resonant structure 12 and third dielectric resonance portion 13；Wherein
One medium block 1 is as obtained by the manufacturing method of the medium block in the present invention, and each dielectric resonance portion is situated between with second on first medium block 1
The multiple resonant cavities of the dielectric waveguide filter are collectively formed in corresponding portion in mass 2.
In the design of the dielectric waveguide filter, needed between first medium resonant structure 11 and second medium resonant structure 12
Coupling, has then opened up therebetween coupling aperture；
And according to design, without coupling between second medium resonant structure 12 and third dielectric resonance portion 13, then, pass through mold
The mode that type core is set between both upper type chamber molds gap 15 as spacer portion, and the part except gap then gives over to connection
The middle part on medium block 1 is collectively formed in portion, spacer portion and interconnecting piece；
Then the first medium resonant structure 11 and second medium resonant structure to intercouple is had concurrently simultaneously in first medium block 1
12, and without coupling mutually between the second medium resonant structure 12 not coupled and third dielectric resonance portion 13；
When specific production, the position and structure ruler on first medium block need to be only controlled by the mold for ceramic post sintering
It is very little, it is integrally formed out first medium block, is enclosed for example using the refine and surface treatment of size, and on surface by silver layer,
I.e. surface is coated with metallic silver, and designed resonant cavity originally is outputed on conductive material layer, finally and equally with conduction material
The bed of material and second medium block for outputing resonant cavity is assembled together, surface herein includes the inner wall section in gap 15；
And due to using first medium block 1 in the present embodiment, originally second medium resonant structure 12 and third dielectric resonance in assembly
The alignment step in portion 13 is removed.The size refine of medium block is surface-treated and encloses the processes such as conductive material layer and is all made of
The prior art does not make any improvement in the present embodiment, nor where the substantive distinguishing features of the present invention compared with the existing technology,
Therefore not to repeat here.
The S parameter curve of the dielectric waveguide filter in the present embodiment is shown in Fig. 8；
It shows that design and the dielectric waveguide filter in the present embodiment are completely the same in Fig. 9, but uses such as background skill
The S of dielectric waveguide filter comparative example made of medium block in the prior art described in art1.2Parameter curve, medium wave
Waveguide filter comparative example is only that relative to the difference of the dielectric waveguide filter in embodiment
Horizontal axis in Fig. 8 and Fig. 9 is that working frequency unit is megahertz (MHz), and the longitudinal axis is the S of dielectric waveguide filter1.2
Parameter (S parameter between the input port and output port of filter), unit dB.
The design of dielectric waveguide filter and dielectric waveguide filter comparative example in the present embodiment is wanted are as follows:
Band-pass behavior: bandwidth 200MHZ (3600-3800MHZ)；
Stopband Performance: S parameter is lower than -20dB before 3550MHZ and after 3850MHZ.
It is found that dielectric waveguide filter in the present embodiment, fully achieves design standard, relatively from Fig. 8 and Fig. 9
It can achieve identical performance design requirement in dielectric waveguide filter comparative example, and be simplified in production process.
The present invention also protects a kind of manufacturing method of electromagnetic wave device, including using Jie obtained by the method in the present invention
Matter waveguide filter.The electromagnetic wave device can be any equipment for needing to use filtering device, for example, aircraft, radar,
Base station, satellite etc..These electromagnetic wave devices can send and receive signal, and be filtered after receipt or before sending, with
Make received or sent signal meet demand, therefore electromagnetic wave device at least also needs the defeated of setting and the dielectric waveguide filter
The signal emission module for entering end connection, the signal receiving module being connect with the output end of the dielectric waveguide filter, the electromagnetic wave
The manufacturing method of the other assemblies of equipment and last assemble method are all made of the prior art, do not make in the present embodiment any
It improves, nor therefore not to repeat here where the substantive distinguishing features of the present invention compared with the existing technology.
For example, as shown in Figure 10, electromagnetic wave device is base station, base station is used in manufacturing with the method institute in the present invention
Dielectric waveguide filter obtained makes duplexer, and duplexer includes transmitting band pass filter and collection of letters bandpass filter.It transmits
The input terminal of bandpass filter connects sender, and output end connects antenna for base station；The input terminal linker of collection of letters bandpass filter
Station antenna, output end connect receiver.Then for transmitting band pass filter, signal emission module is sender, and signal receives
Module is antenna for base station.And for collection of letters bandpass filter, signal emission module is antenna for base station, and signal receiving module is to receive
Letter machine.The manufacturing method of the other assemblies of the base station and last assemble method are all made of the prior art, in the present embodiment
Any improvement is not made, nor therefore not to repeat here where the substantive distinguishing features of the present invention compared with the existing technology.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description, technical field that the present invention belongs to is all before one skilled in the art know the applying date or priority date
Ordinary technical knowledge can know the prior art all in the field, and have using routine experiment hand before the date
The ability of section, one skilled in the art can improve and be implemented in conjunction with self-ability under the enlightenment that the application provides
This programme, some typical known features or known method should not become one skilled in the art and implement the application
Obstacle.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, can also make
Several modifications and improvements out, these also should be considered as protection scope of the present invention, these all will not influence the effect that the present invention is implemented
Fruit and patent practicability.The scope of protection required by this application should be based on the content of the claims, the tool in specification
The records such as body embodiment can be used for explaining the content of claim.
Claims (9)
1. a kind of manufacturing method of medium block, comprising: be fixedly connected with multiple dielectric resonance portions；
It is characterized by: therebetween, at least one middle part is set between dielectric resonance portion to be fixedly connected with dielectric resonance portion；
Coupling bandwidth between the dielectric resonance portion that the middle part connects it is less than the Medium Wave Guide using the medium block
The 10% of the bandwidth of operation of filter.
2. a kind of manufacturing method of medium block according to claim 1, it is characterised in that: further include the dielectric resonance
Portion and middle part are integrally formed using dielectric material to be made.
3. a kind of manufacturing method of medium block according to claim 1, it is characterised in that: the middle part includes for connecting
Connect the interconnecting piece between the dielectric resonance portion, and the spacer portion for the dielectric resonance portion to be isolated.
4. a kind of manufacturing method of medium block according to claim 3, it is characterised in that: further include, it is humorous in the medium
Gap is opened up between vibration portion forms the spacer portion.
5. a kind of manufacturing method of medium block according to claim 3, it is characterised in that: the middle part makes its company
Coupling bandwidth between the dielectric resonance portion connect is less than the 5% of the bandwidth of operation of the dielectric waveguide filter using the medium block, greatly
In the 2% of the bandwidth of operation.
6. a kind of manufacturing method of medium block according to claim 2, it is characterised in that: the dielectric material is using ceramics
Material.
7. a kind of manufacturing method of dielectric waveguide filter, it is characterised in that: including, using one or more medium blocks, wherein
At least one medium block method described in any one of claim 1 to 6 is made.
8. a kind of manufacturing method of electromagnetic wave device, it is characterised in that: including using the medium wave as described in claim 7
Dielectric waveguide filter made from the manufacturing method of waveguide filter.
9. the manufacturing method of electromagnetic wave device according to claim 8, it is characterised in that: the electromagnetic wave device is winged
Machine, radar, base station or satellite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810983591.7A CN109103553B (en) | 2018-08-27 | 2018-08-27 | A kind of manufacturing method and its application of medium block |
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| CN201810983591.7A CN109103553B (en) | 2018-08-27 | 2018-08-27 | A kind of manufacturing method and its application of medium block |
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| CN109103553A true CN109103553A (en) | 2018-12-28 |
| CN109103553B CN109103553B (en) | 2019-11-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384539A (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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| JP2001339204A (en) * | 2000-05-30 | 2001-12-07 | Sumitomo Metal Ind Ltd | Compact dielectric filter |
| WO2008019307A2 (en) * | 2006-08-04 | 2008-02-14 | Dielectric Laboratories, Inc. | Wideband dielectric waveguide filter |
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| CN111384539A (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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| CN109103553B (en) | 2019-11-29 |
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