CN209626392U - Quadravalence cross-coupling ceramic dielectric filter - Google Patents
Quadravalence cross-coupling ceramic dielectric filter Download PDFInfo
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- CN209626392U CN209626392U CN201920390088.0U CN201920390088U CN209626392U CN 209626392 U CN209626392 U CN 209626392U CN 201920390088 U CN201920390088 U CN 201920390088U CN 209626392 U CN209626392 U CN 209626392U
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- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 238000006880 cross-coupling reaction Methods 0.000 title claims abstract description 18
- 239000004020 conductor Substances 0.000 claims abstract description 257
- 230000008878 coupling Effects 0.000 claims abstract description 76
- 238000010168 coupling process Methods 0.000 claims abstract description 76
- 238000005859 coupling reaction Methods 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 22
- 238000005516 engineering process Methods 0.000 claims description 20
- 238000007639 printing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Abstract
The utility model discloses a kind of quadravalence cross-coupling ceramic dielectric filter, including medium block, set on medium block there are four through hole；The inner surface of each through hole is equipped with inner conductor layer, and the medium block outer surface for being parallel to through hole axis direction is equipped with outer conductor layer；Medium block outer surface where through hole one end is equipped with short-circuit face, medium block outer surface where its other end forms open surface, and open surface is equipped with circuit local conductor layer one, circuit local conductor layer two, circuit local conductor layer three, circuit local conductor layer four, coupling extension conductor layer and coupling conductors layer；Coupling extends conductor layer connection circuit local conductor layer one and circuit local conductor layer four；Coupling conductors layer extends between two adjacent circuit local conductor layers.The quadravalence cross-coupling ceramic dielectric filter of the utility model can improve the rejection characteristic of passband outer lower frequency side and high frequency side, meet Contiuum type filter and inhibit to require outside the higher band of specific frequency point or special frequency channel.
Description
Technical field
The ceramic dielectric filter that the utility model relates to use in the equipment such as wireless mobile communication base station, repeater,
The quadravalence cross-coupling ceramic dielectric of lower frequency side and high frequency side rejection characteristic outside passband can be improved more particularly to one kind to filter
Device.
Background technique
As shown in Fig. 1~2, in the prior art, quadravalence Contiuum type ceramic dielectric filter has by ceramic forming material
Integral type medium block, equidirectional on the medium block to open up there are four through hole, each through hole constitutes a resonant cavity.
By silver-plated formation outer conductor layer on the smooth outer surface in four, the upper and lower, left and right of the medium block, in each through hole
Pass through silver-plated formation inner conductor layer on inner surface.The short-circuit face of silver-plated formation in the back end outer surface of the medium block, short-circuit face makes
Inner conductor layer in through hole is electrically connected with the outer conductor layer on medium block, and the leading exterior surface of medium block, should as open surface
Each through hole is corresponded on open surface passes through silver-plated formation circuit local conductor layer；Pass through two on the lower surface of the medium
The insulating regions of strip structure separate to form signal input terminal and signal output terminal.Quadravalence Contiuum type ceramic dielectric filter
Wave device is applied when in the equipment such as base station or repeater, is put by signal input terminal and signal output terminal with base station, directly
The reception circuit stood is connected with transmit circuit.
More than, quadravalence Contiuum type ceramic dielectric filter commonly used in the prior art has higher want for Out-of-band rejection
It is not easy to meet when asking.In the past in order to improve Out-of-band rejection performance, it usually needs locally install metallic shield additional on the outside of medium block
Cover is to improve Out-of-band rejection performance, in some particular/special requirements, even if the band of specific frequency point is outer using this external shielding measure
Inhibit improvement still undesirable.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of quadravalence cross-coupling ceramic dielectric filters, can
The rejection characteristic for improving quadravalence ceramic dielectric filter passband outer lower frequency side and high frequency side, meets Contiuum type filter specific
Inhibit to require outside the higher band of frequency point or special frequency channel.
In order to solve the above-mentioned technical problem, the utility model provides a kind of quadravalence cross-coupling ceramic dielectric filtering
Device is opened up on the medium block there are four through hole, described four penetrate through including the integral type medium block by ceramic forming material
The axis in hole is parallel, arranged side by side；The inner surface of each through hole is equipped with the coat of metal and forms inner conductor layer, is parallel to perforation
The medium block outer surface in axially bored line direction is equipped with the coat of metal and forms outer conductor layer；The through hole wherein medium where one end
Block outer surface forms short-circuit face, the inner conductor layer and outer conductor layer equipped with the coat of metal and passes through short circuit face conductive connection；Institute
Medium block outer surface where stating the through hole other end forms open surface, corresponds to each through hole on the open surface and is equipped with electricity
Road bureau's portion's conductor layer, respectively circuit local conductor layer one, circuit local conductor layer two, circuit local conductor layer three and circuit office
Portion's conductor layer four；The outer surface that outer conductor layer is formed on the medium block is set there are two insulation division, described two insulation divisions by its
The outer conductor layer of place outer surface is separated to form signal input terminal and signal output terminal；The open surface is equipped with coupling and prolongs
Stretch conductor layer and coupling conductors layer；The coupling, which extends, has clearance for insulation between conductor layer and outer conductor layer, the coupling is prolonged
Conductor layer connection circuit local conductor layer one and circuit local conductor layer four are stretched, the coupling extends conductor layer and locally leads with circuit
Clearance for insulation is all had between body layer two, circuit local conductor layer three；The coupling conductors layer has conductive with outer conductor layer
Two groups of connection, wherein coupling conductors layer described in one group extends between two adjacent circuit local conductor layers；Described in another group
Coupling conductors layer extends between another group of two adjacent circuit local conductor layers；The coupling conductors layer and circuit local conductor
Clearance for insulation is all had between layer one, circuit local conductor layer two, circuit local conductor layer three and circuit local conductor layer four.
It further comprise that one group of coupling conductors layer extends to circuit part in one preferred embodiment of the utility model
Between conductor layer one and circuit local conductor layer two, another group of coupling conductors layer extends to circuit local conductor layer three and circuit office
Between portion's conductor layer four.
It further comprise that one group of coupling conductors layer extends to circuit part in one preferred embodiment of the utility model
Between conductor layer one and circuit local conductor layer two, another group of coupling conductors layer extends to circuit local conductor layer two and circuit office
Between portion's conductor layer three.
It further comprise that one group of coupling conductors layer extends to circuit part in one preferred embodiment of the utility model
Between conductor layer two and circuit local conductor layer three, another group of coupling conductors layer extends to circuit local conductor layer three and circuit office
Between portion's conductor layer four.
In one preferred embodiment of the utility model, further comprise the coupling conductors layer be based on printing technology or
The metal conductor layer that laser technology is formed.
In one preferred embodiment of the utility model, further comprise each circuit local conductor layer be based on printing
The metal conductor layer that technique or laser technology are formed；It is based on printing technology or laser technology that the coupling, which extends conductor layer,
The metal conductor layer of formation.
It further comprise the cuboid knot that the medium block is accumbency placement in one preferred embodiment of the utility model
Structure, four through hole horizontal cross are arranged on the medium block of rectangular parallelepiped structure.
It further comprise being additionally provided with two terminals on the open surface locally to lead in one preferred embodiment of the utility model
Body layer, described two terminal local conductor layers and circuit local conductor layer one, circuit local conductor layer two, circuit local conductor layer
Three, circuit local conductor layer four, coupling conductors layer, coupling, which extend, all has clearance for insulation between conductor layer；Two terminal parts
Conductor layer is connect with signal input terminal and signal output terminal respectively.
The utility model has the beneficial effects that the quadravalence ceramic dielectric filter of the utility model, it is open to be located at medium block
The coupling designed on face extends conductor layer electric signal conducting connection circuit local conductor layer one and circuit local conductor layer four, the coupling
It closes and extends conductor layer formation equivalent inductance, with circuit local conductor layer one, circuit local conductor layer two, circuit local conductor layer
Three, lower frequency side and high frequency side of the filter circuit that circuit local conductor layer four and two group coupling conductors layer cooperatively forms outside passband
Generate a zero point, with this come improve quadravalence ceramic dielectric filter be located at lower frequency side and high frequency side outside passband inhibition spy
Property；Meanwhile the width by changing coupling extension conductor layer or/and development length can adjust the frequency point position for generating zero point
It sets, inhibits to require outside higher band so that quadravalence Contiuum type filter can satisfy in specific frequency point or special frequency channel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of quadravalence ceramic dielectric filter in the prior art；
Fig. 2 is the amplitude-versus-frequency curve figure of quadravalence ceramic dielectric filter shown in Fig. 1；
Fig. 3 is the structural schematic diagram of quadravalence ceramic dielectric filter in the preferred embodiment in the utility model；
Fig. 4 is the amplitude-versus-frequency curve figure of quadravalence ceramic dielectric filter shown in Fig. 3；
Fig. 5 is that the amplitude-frequency of quadravalence ceramic dielectric filter shown in quadravalence ceramic dielectric filter shown in Fig. 1 and Fig. 3 is special
Property comparison diagram；
Fig. 6 is the structural schematic diagram of quadravalence ceramic dielectric filter in second embodiment；
Fig. 7 is the structural schematic diagram of quadravalence ceramic dielectric filter in 3rd embodiment；
In the amplitude-versus-frequency curve figure of Fig. 2,4,5, abscissa is frequency (GHz), and ordinate is gain (dB).
Figure label explanation: 2- medium block, 4- through hole, 6- inner conductor layer, 8- outer conductor layer, the short circuit face 10-, 12- are opened
Put face, 14- circuit local conductor layer one, 16- circuit local conductor layer two, 18- circuit local conductor layer three, 19- circuit part
Conductor layer four, 20- insulation division, 22- signal input terminal, 24- signal output terminal, 26- coupling extend conductor layer, 28- coupling
Conductor layer, 30- terminal local conductor layer.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
Embodiment one
Referring to shown in Fig. 3, the present embodiment discloses a kind of quadravalence cross-coupling ceramic dielectric filter, including by ceramic material
Expect molding integral type medium block 2, which is the rectangular parallelepiped structure that accumbency is placed, open up on above-mentioned medium block 2 there are four
Through hole 4, four 4 horizontal cross of through hole are arranged on the medium block 2 of rectangular parallelepiped structure.The axis of aforementioned four through hole 4
In parallel, side by side；The inner surface of each above-mentioned through hole 4 is equipped with the coat of metal and forms inner conductor layer 6, is parallel to 4 axis of through hole
The medium block outer surface in line direction is equipped with the coat of metal and forms outer conductor layer 8；The above-mentioned through hole 4 wherein medium block where one end
Outer surface forms short-circuit face 10, above-mentioned inner conductor layer 6 and outer conductor layer 8 equipped with the coat of metal and connects by the way that the short circuit face 10 is conductive
It connects；The outer surface that outer conductor layer is formed on above-mentioned medium block 2 is set there are two insulation division 20, and above-mentioned two insulation division 20 will be where it
The outer conductor layer of outer surface is separated to form signal input terminal 22 and signal output terminal 24；Where above-mentioned 4 other end of through hole
Medium block outer surface formed open surface 12.
Each through hole 4 is corresponded on above-mentioned open surface 12 is equipped with circuit local conductor layer, respectively circuit local conductor
Layer 1, circuit local conductor layer 2 16, circuit local conductor layer 3 18 and circuit local conductor layer 4 19.Above-mentioned open surface 12
It is equipped with coupling and extends conductor layer 26, coupling conductors layer 28 and two terminal local conductor layers 30.More than, it is each on open surface 12
Connection relationship between conductor layer is as follows:
(1) circuit local conductor layer 1, circuit local conductor layer 2 16, circuit local conductor layer 3 18 and circuit part
Conductor layer 4 19 is connect with inner conductor layer 6, and has clearance for insulation between outer conductor layer 8；Each circuit local conductor
Also there is clearance for insulation between layer.
(2) above-mentioned coupling, which extends, has clearance for insulation between conductor layer 26 and outer conductor layer 8, which extends conductor layer 26
Circuit local conductor layer 1 and circuit local conductor layer 4 19 are connected, which extends conductor layer 26 and circuit local conductor layer
2 16, clearance for insulation is all had between circuit local conductor layer 3 18.
(3) two terminal local conductor layers 30 are connect with signal input terminal 22 and signal output terminal 24 respectively；This two
A terminal local conductor layer 30 and circuit local conductor layer 1, circuit local conductor layer 2 16, circuit local conductor layer 3 18,
Circuit local conductor layer 4 19, coupling conductors layer 28, coupling, which extend, all has clearance for insulation between conductor layer 26.
(4) two groups of coupling conductors layers 28 on open surface 12 are connect with outer conductor layer 8, wherein one group of coupling conductors layer 28
It extends between circuit local conductor layer 1 and circuit local conductor layer 2 16, another group of coupling conductors layer 28 extends to circuit
Between local conductor layer 3 18 and circuit local conductor layer 4 19.The coupling conductors layer 28 and circuit local conductor layer 1, electricity
Road bureau's portion's conductor layer 2 16, circuit local conductor layer 3 18 and circuit local conductor layer 4 19, between all have clearance for insulation.
(5) the 12 top shadow region of open surface of medium block shown in Fig. 3 is conductive layer, and non-hatched area is between insulation
Gap.Certainly, according to actual design requirement, for example, centre frequency, passband width, coupling size etc., on adjustable open surface
The area of the area of each conductive layer, clearance for insulation, i.e. adjustment shadow region area and non-hatched area area.
Related content in above-mentioned quadravalence ceramic dielectric filter technical solution is explained as follows:
1, above-mentioned terminal local conductor layer and each circuit local conductor layer are based on printing technology or laser technology
The coat of metal (or metal conductor layer) of formation；It is based on printing technology or laser technology that above-mentioned coupling, which extends conductor layer 26,
The coat of metal (or metal conductor layer) of formation；Above-mentioned coupling conductors layer 28 is to be formed based on printing technology or laser technology
The coat of metal (or metal conductor layer).Specifically, obtaining terminal local conductor layer, circuit local conductor based on printing technology
Layer, coupling extend the process of conductor layer or coupling conductors layer are as follows: with through hole, inner conductor layer, outer conductor layer and short circuit
On the medium block in face, its coat of metal being located on open surface is removed, is prolonged circuit local conductor layer, coupling based on printing technology
It stretches in conductor layer 26 and the printing to the open surface for having been removed the coat of metal of coupling conductors layer 28, obtains the filter of quadravalence ceramic dielectric
Wave device.Circuit local conductor layer is obtained based on laser technology, coupling extends the process of conductor layer or coupling conductors layer are as follows: one
Molding tool there are four through hole medium block, based on coat of metal technique formed on the medium block inner conductor layer, outer conductor layer,
Short-circuit face and open surface with the coat of metal, the open surface of medium block is all covered with metal-plated identical with short-circuit face at this time
Layer forms each circuit local conductor layer, coupling extends conductor layer based on the part metals coating on laser technology removal open surface
With extension conductor layer.
2, the above-mentioned coat of metal silver-plated, gold-plated, copper facing or can aluminize, wherein and silver-plated and copper facing is easier to implement, and
The performance of manufactured filter is more preferable.
3, the coupling designed on medium block open surface extends 26 electric signal of conductor layer conducting connection circuit local conductor
Layer 1 and circuit local conductor layer 4 19, which extends conductor layer 26 and forms equivalent inductance, with circuit local conductor layer
One 14, circuit local conductor layer 2 16, circuit local conductor layer 3 18, circuit local conductor layer 4 19 and two groups of coupling conductors layers
Lower frequency side and high frequency side of 28 filter circuits cooperatively formed outside passband generate zero point, are situated between with this to improve quadravalence ceramic electrical
Matter filter is located at the rejection characteristic of passband outer lower frequency side and high frequency side.Specifically, as shown in figure 4, the quadravalence of the application design
Ceramic dielectric filter applies the quadravalence filter in 800MHz ± 40MHz (centre frequency 800MHz, frequency bandwidth 80MHz)
On wave device, the frequency point for generating zero point is 650MHz and 950MHz, and the rejection characteristic of 650MHz frequency point is -62.99dB, 950MHz
The rejection characteristic of frequency point is -56.28dB.
As shown in Fig. 2, the quadravalence ceramic dielectric filter of prior art design applies the quadravalence in 800MHz ± 40MHz
On filter, the rejection characteristic of 650MHz is -32.32dB, and the rejection characteristic of 550MHz is -25.78dB.
Comparison diagram 2 and Fig. 4, or as shown in figure 5, the quadravalence ceramic dielectric filter of the application design is located at
The lower frequency side of 650MHz~760MHz frequency range and the high frequency side Out-of-band rejection of 840MHz~950MHz frequency range are compared to the prior art
Quadravalence ceramic dielectric filter, all tool have greatly improved, especially frequency point is located at 650MHz and 950MHz, Out-of-band rejection
Characteristic promotion becomes apparent from.Certainly, according to actual use demand, by changing the width of coupling extension conductor layer 26 or/and prolonging
Elongation can adjust the frequency point position for generating zero point, enable quadravalence Contiuum type filter in specific frequency point or special frequency channel
Enough meet and inhibits to require outside higher band.
Embodiment two
As shown in fig. 6, the present embodiment discloses a kind of quadravalence cross-coupling ceramic dielectric filter, the area with embodiment one
It is not only that the extended position of two groups of coupling conductors layers, in the present embodiment, one group of coupling conductors layer 28 extends to circuit and locally leads
Between body layer 1 and circuit local conductor layer 2 16, another group of coupling conductors layer 28 extends to 2 16 He of circuit local conductor layer
Between circuit local conductor layer 18 3.
Embodiment three
As shown in fig. 7, the present embodiment discloses a kind of quadravalence cross-coupling ceramic dielectric filter, the area with embodiment one
It is not only that the extended position of two groups of coupling conductors layers, in the present embodiment, one group of coupling conductors layer 28 extends to circuit and locally leads
Between body layer 2 16 and circuit local conductor layer 3 18, another group of coupling conductors layer 28 extends to 3 18 He of circuit local conductor layer
Between circuit local conductor layer 4 19.
More than, the four-step filter in embodiment two and embodiment three can be generated in the lower frequency side and high frequency side of passband
Zero point improves the rejection characteristic at corresponding frequency point；But the squareness factor of four-step filter is more excellent in embodiment one.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (8)
1. a kind of quadravalence cross-coupling ceramic dielectric filter, described including the integral type medium block by ceramic forming material
It is opened up on medium block there are four through hole, the axis of four through holes is parallel, arranged side by side；The inner surface of each through hole
It is equipped with the coat of metal and forms inner conductor layer, the medium block outer surface for being parallel to through hole axis direction is formed equipped with the coat of metal
Outer conductor layer；Wherein the medium block outer surface where one end is equipped with the coat of metal and forms short-circuit face the through hole, it is described in lead
Body layer and outer conductor layer are conductively connected by the short circuit face；Medium block outer surface where the through hole other end forms opening
Face corresponds to each through hole on the open surface and is equipped with circuit local conductor layer, respectively circuit local conductor layer one, circuit
Local conductor layer two, circuit local conductor layer three and circuit local conductor layer four；The outer of outer conductor layer is formed on the medium block
Surface is set there are two insulation division, and described two insulation divisions separate the outer conductor layer of outer surface where it to form signal input terminal
And signal output terminal；It is characterized by: the open surface, which is equipped with coupling, extends conductor layer and coupling conductors layer；The coupling
Extending has clearance for insulation between conductor layer and outer conductor layer, the coupling extends conductor layer and connects one He of circuit local conductor layer
Circuit local conductor layer four, the coupling extend between conductor layer and circuit local conductor layer two, circuit local conductor layer three
With clearance for insulation；The coupling conductors layer has two groups be conductively connected with outer conductor layer, wherein coupling described in one group is led
Body layer extends between two adjacent circuit local conductor layers；Coupling conductors layer described in another group extend to another group two it is adjacent
Between circuit local conductor layer；The coupling conductors layer and circuit local conductor layer one, circuit local conductor layer two, circuit part
Clearance for insulation is all had between conductor layer three and circuit local conductor layer four.
2. quadravalence cross-coupling ceramic dielectric filter as described in claim 1, it is characterised in that: one group of coupling is led
Body layer extends between circuit local conductor layer one and circuit local conductor layer two, and another group of coupling conductors layer extends to circuit office
Between portion's conductor layer three and circuit local conductor layer four.
3. quadravalence cross-coupling ceramic dielectric filter as described in claim 1, it is characterised in that: one group of coupling is led
Body layer extends between circuit local conductor layer one and circuit local conductor layer two, and another group of coupling conductors layer extends to circuit office
Between portion's conductor layer two and circuit local conductor layer three.
4. quadravalence cross-coupling ceramic dielectric filter as described in claim 1, it is characterised in that: one group of coupling is led
Body layer extends between circuit local conductor layer two and circuit local conductor layer three, and another group of coupling conductors layer extends to circuit office
Between portion's conductor layer three and circuit local conductor layer four.
5. such as the described in any item quadravalence cross-coupling ceramic dielectric filters of claim 2~4, it is characterised in that: described
Coupling conductors layer is the metal conductor layer formed based on printing technology or laser technology.
6. quadravalence cross-coupling ceramic dielectric filter as described in claim 1, it is characterised in that: each circuit part
Conductor layer is the metal conductor layer formed based on printing technology or laser technology；It is based on print that the coupling, which extends conductor layer,
The metal conductor layer that dataller's skill or laser technology are formed.
7. quadravalence cross-coupling ceramic dielectric filter as described in claim 1, it is characterised in that: the medium block is cross
The sleeping rectangular parallelepiped structure placed, four through hole horizontal cross are arranged on the medium block of rectangular parallelepiped structure.
8. quadravalence cross-coupling ceramic dielectric filter as described in claim 1, it is characterised in that: on the open surface also
If there are two terminal local conductor layer, described two terminal local conductor layers and circuit local conductor layer one, circuit local conductor
Layer two, circuit local conductor layer three, circuit local conductor layer four, coupling conductors layer, coupling extend to be all had absolutely between conductor layer
Intermarginal gap；Two terminal local conductor layers are connect with signal input terminal and signal output terminal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390088.0U CN209626392U (en) | 2019-03-26 | 2019-03-26 | Quadravalence cross-coupling ceramic dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390088.0U CN209626392U (en) | 2019-03-26 | 2019-03-26 | Quadravalence cross-coupling ceramic dielectric filter |
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| Publication Number | Publication Date |
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| CN209626392U true CN209626392U (en) | 2019-11-12 |
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| CN201920390088.0U Expired - Fee Related CN209626392U (en) | 2019-03-26 | 2019-03-26 | Quadravalence cross-coupling ceramic dielectric filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036325A (en) * | 2021-01-26 | 2021-06-25 | 嘉兴佳利电子有限公司 | Novel dielectric filter |
| TWI735204B (en) * | 2020-03-06 | 2021-08-01 | 大陸商廈門松元電子有限公司 | Structured hybrid hetero-wavelength resonant ceramic filter |
-
2019
- 2019-03-26 CN CN201920390088.0U patent/CN209626392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI735204B (en) * | 2020-03-06 | 2021-08-01 | 大陸商廈門松元電子有限公司 | Structured hybrid hetero-wavelength resonant ceramic filter |
| CN113036325A (en) * | 2021-01-26 | 2021-06-25 | 嘉兴佳利电子有限公司 | Novel dielectric filter |
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