CN206003935U - K-band hair fastener type LTCC wave filter - Google Patents
K-band hair fastener type LTCC wave filter Download PDFInfo
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- CN206003935U CN206003935U CN201620777458.2U CN201620777458U CN206003935U CN 206003935 U CN206003935 U CN 206003935U CN 201620777458 U CN201620777458 U CN 201620777458U CN 206003935 U CN206003935 U CN 206003935U
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Abstract
The utility model discloses a kind of K-band hair fastener type LTCC wave filter, including ltcc substrate（6）And filtering body, ltcc substrate（6）For 9 laminates, wherein filtering body is arranged at ltcc substrate（6）Layer 5, ltcc substrate（6）Ground floor and the 9th layer be stratum, the second layer ~ four layer and layer 6 ~ eight layer hollow out；Filtering body includes a signal input feeder line（1）, a signal output feeder line（2）, seven hair fastener type coupled structures（3）, the first tap（7）With the second tap（8）, described signal input feeder line（1）, signal output feeder line（2）, hair fastener type coupled structure（3）, the first tap（7）With the second tap（8）May be contained within ltcc substrate；The utility model by the selection of the structure to LTCC wave filter including choose hair fastener type coupled structure selection, tap position selection with and the coefficient of coup determination, the indexs such as the loss of wave filter, flatness, standing wave are improved, the needs of practical engineering application are met.
Description
Technical field
The utility model patent is related to microstrip filter miniaturization technology, the more particularly to mini filter based on LTCC
Technology, more particularly to a kind of K-band hair fastener type LTCC wave filter.
Background technology
With developing rapidly for mobile communication and satellite communication, the small form factor requirements to device, component, whole machine are increasingly compeled
Cut, and the miniaturization of wave filter is the difficult problem for urgently breaking through at present.Common microstrip lines filter construction includes parallel coupling
Conjunction, hair fastener type, pectination type, interdigitated etc..Hair fastener type filter construction is compact, it is easy to integrated, is widely used in various communication electricity
Lu Zhong.
LTCC Technology is a kind of new encapsulation technology, can typically adopt passive device hair fastener type wave filter
Microwave sheet material, mostly in low-frequency range, in K-band, as wavelength is very short, resonance arm is very big with live width ratio for working frequency range, design
Complex, traditional design is extremely difficult to preferable effect, it is difficult to obtain practical application in engineering.
The utility model is created purpose and is mainly based upon LTCC technology, using hair fastener type structure design K-band wave filter, changes
Enter the indexs such as the loss of wave filter, flatness, standing wave, meet the needs of practical engineering application；The main technology for needing to solve is asked
The indexs such as the entitled loss for improving wave filter, flatness, standing wave, meet the needs of practical engineering application.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of K-band hair fastener type LTCC wave filter,
By the loss of the design improvement wave filter of filter construction, flatness, standing wave index.
The purpose of this utility model is achieved through the following technical solutions：
K-band hair fastener type LTCC wave filter, including ltcc substrate and filtering body, ltcc substrate is 9 laminates, wherein,
Filtering body is arranged at the layer 5 of ltcc substrate, and the ground floor of ltcc substrate and the 9th layer are stratum, the second layer ~ four layer
And layer 6 ~ eight layer hollows out, filtering body include a signal input feeder line, signal output feeder line, seven send out
Card-type coupled structure, the first tap and the second tap, signal input feeder line, signal output feeder line, hair fastener type coupled structure, first
Tap and the second tap are may be contained within ltcc substrate；Hair fastener type coupled structure is by two vertical rectangle coupling pieces, levels
Rectangle coupling piece constitutes, U-shaped structure；Signal input feeder line couples knot using symmetric mode with hair fastener type with signal output feeder line
Structure is connected；
The vertical rectangle coupling of the close signal input feeder line of one end of signal input feeder line and the first hair fastener type coupled structure
Piece connection is closed, the other end of signal input feeder line is connected with the first tap；One end of signal output feeder line and the 7th hair fastener type coupling
The vertical rectangle coupling piece connection of the close signal output feeder line of structure is closed, the other end of signal output feeder line and the second tap connect
Connect.
The filtering body of K-band hair fastener type LTCC wave filter adopts 7 rank Chebyshev filters, the first tap and second
Tap is distributed in left and right two ends of ltcc substrate and symmetrically, all adopts 50 ohm line, same hair fastener type coupled structure
Spacing between two vertical rectangle coupling pieces is 0.34 ~ 0.36mm, two vertical rectangles of same hair fastener type coupled structure
Best results when spacing between coupling piece is 0.35mm；First hair fastener type coupled structure and the second hair fastener type coupled structure
The spacing of immediate two vertical rectangle coupling pieces be 0.15mm, the second hair fastener type coupled structure coupled with the 3rd hair fastener type
The spacing of immediate two vertical rectangle coupling pieces of structure is 0.22mm, the 3rd hair fastener type coupled structure and the 4th hair fastener type
The spacing of immediate two vertical rectangle coupling pieces of coupled structure be 0.25mm, the 6th hair fastener type coupled structure with the 7th
The spacing of immediate two vertical rectangle coupling pieces of card-type coupled structure is 0.15mm, the 5th hair fastener type coupled structure and the
The spacing of immediate two vertical rectangle coupling pieces of six hair fastener type coupled structures is 0.22mm, the 4th hair fastener type coupled structure
The spacing of vertical rectangle coupling piece is 0.25mm with immediate two of the 5th hair fastener type coupled structure.
The ltcc substrate of K-band hair fastener type LTCC wave filter adopts Ferro-A6 sheet material, and the dielectric constant of ltcc substrate is
5.9.
The utility model beneficial effect：The utility model provides a kind of K-band hair fastener type LTCC wave filter, by this
The structure of LTCC wave filter is chosen（Including choose hair fastener type coupled structure, tap position choose with and the coefficient of coup determination）,
The indexs such as the loss of improvement wave filter, flatness, standing wave, meet the needs of practical engineering application.
Description of the drawings
Fig. 1 is the utility model structure chart；
Fig. 2 is the utility model simulated effect figure；
In figure, 1- signal input feeder line, 2- signal output feeder line, 3- hair fastener type coupled structure, the vertical rectangle coupling piece of 4-,
5- horizontal rectangular coupling piece, 6-LTCC substrate, the first tap of 7-, the second tap of 8-.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings, but protection domain of the present utility model
It is not limited to described below.
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in figure 1, the structure diagram of the principle for the utility model.Ltcc substrate 6 is 9 laminates, wherein, wave filter sheet
Body is arranged at the layer 5 of ltcc substrate 6, and the ground floor of ltcc substrate 6 and the 9th layer are stratum, the second layer ~ four layer and the
Six layers ~ the 8th layer hollows out.
Filtering body includes 1, signal output feeder line 2 of a signal input feeder line, seven hair fastener type coupled structures 3
With two taps, using 7 rank Chebyshev filters, the first tap 7 and the second tap 8 are distributed in ltcc substrate to filtering body
Left and right two ends and symmetrically, the first tap（7）It is arranged on ltcc substrate（6）Left end, the second tap 8 arrange ltcc substrate
（6）Right-hand member, they all adopt 50 ohm line.Between two vertical rectangle coupling pieces 4 of same hair fastener type coupled structure 3
Best results when spacing is 0.35mm.Hair fastener type coupled structure 3 is by two vertical 4, horizontal rectangular of rectangle coupling piece
Coupling piece 5 constitutes, U-shaped structure；Signal input feeder line 1 couples knot using symmetric mode with hair fastener type with signal output feeder line 2
Structure 3 is connected,
The vertical rectangle of the close signal input feeder line 1 of one end of signal input feeder line 1 and the first hair fastener type coupled structure 3
Coupling piece 4 connects, and the other end of signal input feeder line 1 is connected with the first tap 7；One end of signal output feeder line 2 with the 7th
The vertical rectangle coupling piece 4 of the close signal output feeder line 2 of card-type coupled structure 3 connects.The other end of signal output feeder line 2 with
Second tap 8 connects.
In the present embodiment, according to the direction of signal input feeder line 1 to signal output feeder line 2（Opposite direction can also）, seven
Individual hair fastener type coupled structure 3 is respectively the first hair fastener type coupled structure, the second hair fastener type coupled structure, the 3rd hair fastener type coupling knot
Structure, the 4th hair fastener type coupled structure, the 5th hair fastener type coupled structure, the 6th hair fastener type coupled structure, the 7th hair fastener type coupling knot
Structure.Wherein, the first hair fastener type coupled structure and immediate two vertical rectangle coupling pieces of the second hair fastener type coupled structure
Spacing is 0.15mm, and the second hair fastener type coupled structure rectangle vertical with immediate two of the 3rd hair fastener type coupled structure is coupled
The spacing of piece is 0.22mm, immediate two vertical rectangles of the 3rd hair fastener type coupled structure and the 4th hair fastener type coupled structure
The spacing of coupling piece 4 is 0.25mm, and the 6th hair fastener type coupled structure is perpendicular with immediate two of the 7th hair fastener type coupled structure
The spacing of straight rectangle coupling piece 4 is 0.15mm, and the 5th hair fastener type coupled structure is immediate with the 6th hair fastener type coupled structure
The spacing of two vertical rectangle coupling pieces 4 is 0.22mm, and the 4th hair fastener type coupled structure is with the 5th hair fastener type coupled structure most
The spacing of the vertical rectangle coupling piece 4 of close two is 0.25mm.
Ltcc substrate 6 adopts Ferro-A6 sheet material.
The dielectric constant of ltcc substrate 6 is 5.9.
Fig. 2 is the utility model simulated effect figure.As shown in Fig. 2 being less than in 18.8GHz to 21.2GHz internal loss
1.2dB, standing wave are less than -18dB, and inband flatness is less than 0.2dB, disclosure satisfy that Practical Project demand.
Claims (7)
1.K wave band hair fastener type LTCC wave filter, it is characterised in that including ltcc substrate（6）And filtering body, described LTCC
Substrate（6）For 9 laminates, wherein, filtering body is arranged at ltcc substrate（6）Layer 5, ltcc substrate（6）Ground floor and
9th layer is stratum, and the second layer ~ four layer and layer 6 ~ eight layer hollow out；Described filtering body includes a signal
Incoming feeder（1）, a signal output feeder line（2）, seven hair fastener type coupled structures（3）With the first tap（7）With the second tap
（8）, described signal input feeder line（1）, signal output feeder line（2）, hair fastener type coupled structure（3）, the first tap（7）With second
Tap（8）May be contained within ltcc substrate（6）On；Described hair fastener type coupled structure（3）By two vertical rectangle coupling pieces（4）、
One horizontal rectangular coupling piece（5）Composition, U-shaped structure；Signal input feeder line（1）With signal output feeder line（2）Using symmetrical
Mode and hair fastener type coupled structure（3）It is connected；Signal input feeder line（1）One end and the first hair fastener type coupled structure（3）Lean on
Nearly signal input feeder line（1）Vertical rectangle coupling piece（4）Connection, signal input feeder line（1）The other end and the first tap (7)
Connection；Signal output feeder line（2）One end and the 7th hair fastener type coupled structure（3）Close signal output feeder line（2）Vertical square
Shape coupling piece（4）Connection, signal output feeder line（2）The other end be connected with the second tap (8)；Described filtering body is adopted
7 rank Chebyshev filters.
2. K-band hair fastener type LTCC wave filter according to claim 1, it is characterised in that the first tap（7）It is arranged on
Ltcc substrate（6）Left end, the second tap setting ltcc substrate（6）Right-hand member, they all adopt 50 ohm line.
3. K-band hair fastener type LTCC wave filter according to claim 1, it is characterised in that same hair fastener type coupling knot
Structure（3）Two vertical rectangle coupling pieces（4）Between spacing be 0.34 ~ 0.36mm.
4. K-band hair fastener type LTCC wave filter according to claim 3, it is characterised in that the same hair fastener type coupling
Close structure（3）Two vertical rectangle coupling pieces（4）Between spacing be 0.35mm.
5. K-band hair fastener type LTCC wave filter according to claim 1, it is characterised in that the first hair fastener type coupled structure
The vertical rectangle coupling piece with immediate two of the second hair fastener type coupled structure（4）Spacing be 0.15mm, the second hair fastener type
Coupled structure and immediate two vertical rectangle coupling pieces of the 3rd hair fastener type coupled structure（4）Spacing be 0.22mm, the
Three hair fastener type coupled structures and immediate two vertical rectangle coupling pieces of the 4th hair fastener type coupled structure（4）Spacing be
Immediate two vertical rectangle coupling pieces of 0.25mm, the 6th hair fastener type coupled structure and the 7th hair fastener type coupled structure（4）
Spacing be 0.15mm, immediate two vertical rectangle couplings of the 5th hair fastener type coupled structure and the 6th hair fastener type coupled structure
Close piece（4）Spacing be 0.22mm, immediate two of the 4th hair fastener type coupled structure and the 5th hair fastener type coupled structure are straight
Rectangle coupling piece（4）Spacing be 0.25mm.
6. K-band hair fastener type LTCC wave filter according to claim 1, it is characterised in that described ltcc substrate（6）Adopt
Use Ferro-A6 sheet material.
7. K-band hair fastener type LTCC wave filter according to claim 1, it is characterised in that described ltcc substrate（6）'s
Dielectric constant is 5.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620777458.2U CN206003935U (en) | 2016-07-22 | 2016-07-22 | K-band hair fastener type LTCC wave filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620777458.2U CN206003935U (en) | 2016-07-22 | 2016-07-22 | K-band hair fastener type LTCC wave filter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331926A (en) * | 2017-07-06 | 2017-11-07 | 中国人民解放军国防科学技术大学 | Micro-strip double-passband filter |
| CN107369869A (en) * | 2017-06-20 | 2017-11-21 | 电子科技大学 | A kind of low insertion loss wave filter based on encapsulation micro-strip |
| CN107732382A (en) * | 2017-09-07 | 2018-02-23 | 南京理工大学 | A kind of Ku band filters |
| CN109301410A (en) * | 2018-09-26 | 2019-02-01 | 安徽矽芯微电子科技有限公司 | A kind of SIW zigzag cross-coupling band pass filter |
| CN113555685A (en) * | 2021-07-22 | 2021-10-26 | 维沃移动通信有限公司 | Electronic device |
-
2016
- 2016-07-22 CN CN201620777458.2U patent/CN206003935U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369869A (en) * | 2017-06-20 | 2017-11-21 | 电子科技大学 | A kind of low insertion loss wave filter based on encapsulation micro-strip |
| CN107369869B (en) * | 2017-06-20 | 2019-11-12 | 电子科技大学 | A Low Insertion Loss Filter Based on Packaged Microstrip |
| CN107331926A (en) * | 2017-07-06 | 2017-11-07 | 中国人民解放军国防科学技术大学 | Micro-strip double-passband filter |
| CN107732382A (en) * | 2017-09-07 | 2018-02-23 | 南京理工大学 | A kind of Ku band filters |
| CN109301410A (en) * | 2018-09-26 | 2019-02-01 | 安徽矽芯微电子科技有限公司 | A kind of SIW zigzag cross-coupling band pass filter |
| CN109301410B (en) * | 2018-09-26 | 2019-12-13 | 安徽矽芯微电子科技有限公司 | SIW (substrate integrated waveguide) sawtooth-shaped cross-coupling band-pass filter |
| CN113555685A (en) * | 2021-07-22 | 2021-10-26 | 维沃移动通信有限公司 | Electronic device |
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