CN205452491U - Combination formula wave filter of ceramic resonator fluting coupled modes - Google Patents
Combination formula wave filter of ceramic resonator fluting coupled modes Download PDFInfo
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- CN205452491U CN205452491U CN201620167835.0U CN201620167835U CN205452491U CN 205452491 U CN205452491 U CN 205452491U CN 201620167835 U CN201620167835 U CN 201620167835U CN 205452491 U CN205452491 U CN 205452491U
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- 239000004020 conductor Substances 0.000 claims abstract description 10
- 230000001939 inductive effect Effects 0.000 claims description 6
- 238000010147 laser engraving Methods 0.000 claims description 2
- 230000001629 suppression Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
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- 238000000034 method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
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- 229910052709 silver Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a microwave communication field especially relates to the box -like wave filter of a species group. A combination formula wave filter of ceramic resonator fluting coupled modes, every coaxial resonator have a no conducting material's open front end surface, and all the other 5 surfaces have all covered conducting material, form the conducting layer, the electrode surface that contains signal input and signal output attenuator on two coaxial resonator in the outside, be equipped with the coupling slot between the coaxial resonator cavity, form the coupling of wave filter. Realize the concrete performance parameter's of wave filter adjustment through the adjustment to coaxial resonator length and coupling slot, this wave filter has a low -loss, the high suppression and have very big improvement to the second harmonic of product.
Description
Technical field
This utility model relates to field of microwave communication, particularly relates to a kind of Combined Filter.
Background technology
Dielectric filter can form a passband allows the signal needing to pass through pass through, and unwanted signal frequency range is formed suppression, allows it not pass through.Owing to there is capacitance sheet and terminal pin in conventional ASSEMBLE wave filter, therefore loss can accordingly increase, conventional filter all can form a second harmonic in the place of 2 frequencys multiplication simultaneously, to such an extent as to very poor in the suppression of the place of mid frequency 2 frequency multiplication, even forms a secondary passband and does not lets the signal go through.
Current Ceramic Dielectric Filter is broken generally into two big classes, single-body type and combination type.
Single-body type i.e. wave filter is formed by a complete medium block, and the type wave filter near-end rejection is preferable, but second harmonic poor-performing.
Combined Filter is combined by multiple dielectric coaxial resonators, terminal pin and capacitance sheet, the type wave filter second harmonic better performances, but insertion loss is bigger than normal, and near-end suppression is poor.
Summary of the invention
This utility model is in order to obtain low insertion loss, the high effect suppressed and improve second harmonic, the purpose of this utility model is to provide the Combined Filter of a kind of ceramic resonator aperture coupled mode, this wave filter uses knockdown mode, there is low-loss, suppress and the second harmonic of product is had greatly improved.
To achieve these goals, this utility model have employed following technical scheme:
A kind of Combined Filter of ceramic resonator aperture coupled mode, this Combined Filter is made up of coaxial resonator, electrode, coupling slot and ground plane:
1) coaxial resonator, it is spliced by multiple coaxial resonators, each resonator has front-end surface, rear end surface, upper surface, ground plane, resonance hole and 2 side surfaces, front-end surface is open, without conductive material, its lap all covers conductive material, and resonance hole inwall is again covered with conductive material；
2) electrode: electrode is on the ground plane of 2 resonators of wave filter outermost, electrode surface has conductive material, signal input attenuator and the electrode surface of signal output pad is formed respectively by the way of laser engraving, there is a circle insulating tape between electrode surface and ground plane, form two Capacitance Coupled respectively；
3) coupling slot: 2 resonators of the outermost conductive layer near a side of other resonators and two sides of intermediate resonator is carved respectively, form insulating regions respectively, two coupling slots of the combined composition of insulating regions of adjacent two resonators, produce an inductive；
4) ground plane: the lower surface of resonator is that ground plane is connected with ground.
As preferably, described insulating tape is " L " shape, is positioned close on upper surface and a side of front-end surface, and upper surface and a side are divided into two pieces, and little square block is electrode surface, remaining for ground plane.
As preferably, described resonator splices and combines in face on the basis of open surface.
As preferably, the coupling slot of described adjacent two resonators is identical, positional symmetry.
As preferably, the coupling slot of described 2 resonators of outermost is identical, positional symmetry；The coupling slot of intermediate resonator is identical.
As preferably, described coaxial resonator, 5 or 7 or 9 coaxial resonators it is spliced.
This utility model is owing to have employed above-mentioned technical scheme, and by the adjustment of coaxial resonator length and coupling slot realizes the adjustment of wave filter specific performance parameter, this wave filter has low-loss, suppresses and has greatly improved the second harmonic of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the structural representation of single resonator silver layer.
Fig. 4 is the first resonator and the structural representation at the 5th two visual angles of resonator.
Fig. 5 is the second resonator and the structural representation at the 4th two visual angles of resonator.
Fig. 6 is the structural representation at the 3rd two visual angles of resonator.
Fig. 7 is this utility model simulated properties figure.
Fig. 8 is this utility model schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is made a detailed explanation.
The Combined Filter of a kind of ceramic resonator aperture coupled mode as shown in Figure 1, including the first resonator, the second resonator, the 3rd resonator, the 4th resonator and the 5th resonator.As it is shown on figure 3, the top end surface FRONT1 of 5 coaxial resonators is open surface, without conductive layer, it is in state of insulation；Two side SIDE1 and SIDE2 all do surface metalation and process, and are coated with conductive layer；Upper surface BOT1 and lower surface BOT2 all does surface metalation and processes, and is coated with conductive layer, and wherein BOT1 face is as ground plane；Rear end surface FRONT2 does surface metalation and processes, and covers conductive layer；5 coaxial resonator axis are provided with axis hole, axis hole hole internal face POLE, do surface metalation and process, cover conductive layer.
As it is shown on figure 3, the first described resonator and the 5th resonator, two resonators are identical, positional symmetry；The upper surface BOT1 of two resonators is being provided with the PORT1-3 insulating barrier of " L " shape at top end surface FRONT1, and upper surface BOT1 is divided into BOT1-1 face and PORT1-2 face；The side SIDE1 of two resonators is being provided with the PORT1-4 insulating barrier of " L " shape at top end surface FRONT1, and side SIDE1 is divided into PORT1-1 face and SIDE1-1 face；The side SIDE2 of two resonators is provided with a coupling slot, and CAO1-1 face, three faces, CAO1-2 face and the CAO1-3 face conductive layer of coupling slot are removed, and are in state of insulation；Described BOT1-1 face is as ground plane, PORT1-2 face and PORT1-1 face are electrode surface, PORT1-3 face and PORT1-4 face are insulating barrier, and electrode surface forms Capacitance Coupled by PORT1-3 face, these two insulating barriers of PORT1-4 face and ground plane and side, thus produces electrode；Being carved with coupling slot respectively on one side SIDE1 of two resonators, after engraving, the CAO1-1 face of coupling slot, the conductive layer in three faces in CAO1-2 face and CAO1-3 face are removed, and are in state of insulation.
The second described resonator and the 4th resonator, two resonators are identical, positional symmetry；All being carved with coupling slot at two side SIDE1 and SIDE2, after engraving, the CAO2-1 face of each resonator coupling slot, CAO2-2 face, CAO2-3 face, CAO2-4 face, CAO2-5 face, the conductive layer in these 6 faces, CAO2-6 face are removed, and are in state of insulation；Wherein CAO1-1 face is identical with CAO2-1 face size positions, and CAO1-2 face and the CAO2-2 face complete phase of size positions, CAO1-3 face is identical with CAO2-3 face size positions.
The 3rd described resonator, coupling slot all it is carved with at two side SIDE1 and SIDE2, after engraving, the CAO3-1 face of coupling slot, CAO3-2 face, CAO3-3 face, CAO3-4 face, CAO3-5 face, the conductive layer in these 6 faces, CAO2-6 face are removed, and are in state of insulation；Wherein CAO2-4 face is identical with CAO3-1 face size positions, CAO2-5 face is identical with CAO3-3 face size positions with size positions identical CAO2-6 face, CAO3-2 face.
As shown in Figure 2,5 coaxial resonators splice and combine in face on the basis of open surface, between the first resonator and between the second resonator, CAO1-1 face and the combination of CAO2-1 face, CAO1-2 face and the combination of CAO2-2 face, CAO1-3 face and the combination of CAO2-3 face form inductive OHE1；Between the second resonator and the 3rd resonator, CAO2-4 face and the combination of CAO3-1 face, CAO2-5 face and the combination of CAO3-2 face, CAO2-6 face and the combination of CAO3-3 face form inductive OHE2；4th resonator and the second resonator are symmetrical, and the 5th resonator and the first resonator are symmetrical, also form inductive OUH2 between the 3rd resonator and the 4th resonator；Inductive OUH1 is formed between the 4th resonator and the 5th resonator.
Claims (6)
1. the Combined Filter of a ceramic resonator aperture coupled mode, it is characterised in that this Combined Filter is made up of coaxial resonator, electrode, coupling slot and ground plane:
1) coaxial resonator, it is spliced by multiple coaxial resonators, each resonator has front-end surface, rear end surface, upper surface, ground plane, resonance hole and 2 side surfaces, front-end surface is open, without conductive material, its lap all covers conductive material, and resonance hole inwall is again covered with conductive material；
2) electrode: electrode is on the ground plane of 2 resonators of wave filter outermost, electrode surface has conductive material, signal input attenuator and the electrode surface of signal output pad is formed respectively by the way of laser engraving, there is a circle insulating tape between electrode surface and ground plane, form two Capacitance Coupled respectively；
3) coupling slot: 2 resonators of the outermost conductive layer near a side of other resonators and two sides of intermediate resonator is carved respectively, form insulating regions respectively, two coupling slots of the combined composition of insulating regions of adjacent two resonators, produce an inductive；
4) ground plane: the lower surface of resonator is that ground plane is connected with ground.
The Combined Filter of a kind of ceramic resonator aperture coupled mode the most according to claim 1, it is characterized in that: insulating tape is " L " shape, it is positioned close on upper surface and a side of front-end surface, upper surface and a side are divided into two pieces, little square block is electrode surface, remaining for ground plane.
The Combined Filter of a kind of ceramic resonator aperture coupled mode the most according to claim 1, it is characterised in that: resonator splices and combines in face on the basis of open surface.
The Combined Filter of a kind of ceramic resonator aperture coupled mode the most according to claim 1, it is characterised in that: the coupling slot of adjacent two resonators is identical, positional symmetry.
5. according to the Combined Filter of a kind of ceramic resonator aperture coupled mode described in claim 1 or 4, it is characterised in that: the coupling slot of 2 resonators of outermost is identical, positional symmetry；The coupling slot of intermediate resonator is identical.
The Combined Filter of a kind of ceramic resonator aperture coupled mode the most according to claim 1, it is characterised in that: coaxial resonator, 5 or 7 or 9 coaxial resonators it is spliced.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620167835.0U CN205452491U (en) | 2016-04-22 | 2016-04-22 | Combination formula wave filter of ceramic resonator fluting coupled modes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620167835.0U CN205452491U (en) | 2016-04-22 | 2016-04-22 | Combination formula wave filter of ceramic resonator fluting coupled modes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960994A (en) * | 2017-04-25 | 2017-07-18 | 四川省韬光通信有限公司 | A kind of dielectric filter be easy to regulating frequency and couple bandwidth |
| CN109546270A (en) * | 2019-01-11 | 2019-03-29 | 苏州艾福电子通讯有限公司 | A kind of filter |
| CN111384490A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter and communication equipment |
| CN111384546A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter and communication equipment |
| CN111384498A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, duplexer and communication equipment |
-
2016
- 2016-04-22 CN CN201620167835.0U patent/CN205452491U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960994A (en) * | 2017-04-25 | 2017-07-18 | 四川省韬光通信有限公司 | A kind of dielectric filter be easy to regulating frequency and couple bandwidth |
| CN111384490A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter and communication equipment |
| CN111384546A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter and communication equipment |
| CN111384498A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, duplexer and communication equipment |
| CN109546270A (en) * | 2019-01-11 | 2019-03-29 | 苏州艾福电子通讯有限公司 | A kind of filter |
| CN109546270B (en) * | 2019-01-11 | 2020-07-28 | 华为技术有限公司 | Filter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 |