CN207166467U - A kind of wave filter for car key - Google Patents
A kind of wave filter for car key Download PDFInfo
- Publication number
- CN207166467U CN207166467U CN201721143134.4U CN201721143134U CN207166467U CN 207166467 U CN207166467 U CN 207166467U CN 201721143134 U CN201721143134 U CN 201721143134U CN 207166467 U CN207166467 U CN 207166467U
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- CN
- China
- Prior art keywords
- pad
- pin
- filter
- top pad
- chip surface
- Prior art date
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- 239000000919 ceramic Substances 0.000 claims abstract description 27
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 22
- 239000010931 gold Substances 0.000 claims description 22
- 229910052737 gold Inorganic materials 0.000 claims description 22
- 239000013078 crystal Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 239000010955 niobium Substances 0.000 claims 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical group [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 2
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical group [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
The utility model provides a kind of wave filter for car key, improve the integration degree of wave filter, the application of client can be expanded, the competitiveness of product can also be strengthened, meet miniaturization of the client for PCB, the requirement of simplification, including ceramic shell and cover plate, connected between the ceramic shell and the cover plate by weld seam layer, it is characterised in that：Broadband filter and narrow band filter are packaged with the ceramic shell.
Description
Technical field
It the utility model is related to SAW filter technical field, specially a kind of wave filter for car key.
Background technology
Existing Vehicle Technology, common automobile wireless key are generally operational in two frequency bins：315MHz or 433MHz.Work
Automobile first carries out inquiry when making, and automobile wireless key postbacks the rolling code information of encryption, automobile solution by 315MHz or 433MHz
Authentication is completed after close, automobile unblock, with increasingly sophisticated Technical Development Requirement, car enterprise wishes that car key can be realized more
It is multi-functional, such as can be communicated with smart machine and realize the functions such as control automobile door lock switch, window lifting, but it is more multi-functional
Realization is intended to additional more multicomponent, and yet with the limitation of car key size, external matching element generally requires client
The headspace on pcb board, it is unfavorable for PCB miniaturization, simplifies.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of wave filter for car key, the collection of wave filter is improved
Into degree is changed, the application of client can be expanded, the competitiveness of product can also be strengthened, meet miniaturization of the client for PCB, letter
The requirement singly changed.
Its technical scheme is such：A kind of wave filter for car key, including ceramic shell and cover plate, the ceramics
Connected between housing and the cover plate by weld seam layer, it is characterised in that：Be packaged with the ceramic shell broadband filter and
Narrow band filter, the narrow band filter are provided with chip surface pad one to chip surface pad five, the broadband filter
Top pad one is provided with provided with chip surface pad six to chip surface pad nine, in the ceramic shell to top pad eight,
Two grounding through hole are additionally provided with the ceramic shell, scribble metal level in the grounding through hole, outside the ceramic shell
Be provided with arc groove, is provided with Gold plated Layer in the arc groove, the lower surface setting pin one of the ceramic shell to pin
Eight；
The chip surface pad one connects top pad one by lead, and the top pad one is described by being arranged on
Gold plated Layer connects pin one, for the input pin as the narrow band filter；
The chip surface pad two connects top pad two by lead, and the top pad two passes through the Gold plated Layer
Pin two is connected, for the input grounding pin as the narrow band filter；
The chip surface pad three connects top pad seven by lead, and the top pad seven passes through grounding through hole two
Pin eight is connected, for the grounding leg as the narrow band filter；
The chip surface pad four connects top pad five by lead, and the top pad five passes through the Gold plated Layer
Pin seven is connected, for the output pin as the narrow band filter；
The chip surface pad five connects top pad six by lead, and the top pad six passes through the Gold plated Layer
Pin six is connected, for the output grounding leg as the narrow band filter；
The chip surface pad six connects top pad three by lead, and the top pad three passes through grounding through hole one
Pin four is connected, for the grounding leg as the broadband filter；
The chip surface pad seven connects top pad four by lead, and the top pad four passes through the Gold plated Layer
Pin three is connected, for the input pin as the broadband filter；
The chip surface pad eight connects top pad seven by lead, and the top pad three passes through grounding through hole two
Pin eight is connected, for the grounding leg as the broadband filter；
The chip surface pad nine connects top pad eight by lead, and the top pad eight passes through the Gold plated Layer
Pin five is connected, for the output pin as the broadband filter.
Further, the lead is aluminum steel.
Further, narrow band filter is quartz crystal narrow band filter.
Further, the broadband filter is lithium niobate wave filter, lithium carbonate wave filter, the filtering of BAW crystal filters
It is any in device.
Further, ground pad is also set on the broadband filter, the ground pad is connected by the Gold plated Layer
The pin four or the pin eight.
The wave filter of two different frequencies is included in filter package of the present utility model for car key, improves filter
The integration degree of ripple device, the application of client can be expanded, the competitiveness of product can also be strengthened, meet client for PCB's
Miniaturization, the requirement of simplification；It is packaged using ceramic shell, there is the advantages of highly reliable, it is strict to meet automotive electronics
Requirement.
Brief description of the drawings
Fig. 1 is that a kind of bottom of wave filter for car key of the present utility model regards schematic diagram；
Fig. 2 is a kind of schematic top plan view of wave filter for car key of the present utility model；
Fig. 3 is a kind of partial perspective schematic view of wave filter for car key of the present utility model.
Embodiment
See Fig. 1, Fig. 2, Fig. 3, a kind of wave filter for car key of the present utility model, including ceramic shell 1 and cover plate
9, connected between ceramic shell 1 and cover plate 9 by weld seam layer, broadband filter 2 and narrow band filter are packaged with ceramic shell 1
3, broadband filter 2 is any in lithium niobate wave filter, lithium carbonate wave filter, BAW crystal filter wave filters, is adapted to
For high data transfer, such as image, multi-medium data, larger frequency spectrum is taken, broadband filter is applied to this, narrow band filter
3 take quartz crystal narrow band filter, and it is highly suitable for low data rate system, and the frequency spectrum that such system takes is narrower,
But the interference for all side frequencies being subject to is larger, and narrow band filter then provides preferable selectivity.
Narrow band filter 3 be provided with chip surface pad 1, chip surface pad 2 42, chip surface pad 3 43,
Chip surface pad 1, to chip surface pad 5 45, broadband filter 2 is provided with chip surface pad 6 46, chip surface
Pad 7 47, chip surface pad 8 48, to chip surface pad 9 49, top pad 1, top are provided with ceramic shell 1
Pad 2 52, top pad 3 53, top pad 4 54, top pad 5 55, top pad 6 56, top pad 7 57, on
Portion's pad 8 58, two grounding through hole are additionally provided with ceramic shell 1（It is not visible in figure）, metal level is scribbled in grounding through hole,
Arc groove 6 is provided with outside ceramic shell 1, Gold plated Layer is provided with arc groove 6, the lower surface of ceramic shell sets pin one
71st, pin 2 72, pin 3 73, pin 4 74, pin 5 75, pin 6 76, pin 7 77, to pin 8 78；
Chip surface pad 1 connects top pad 1 by lead 8, and top pad 1 is gold-plated by being arranged on
Layer connection pin 1, for the input pin as narrow band filter 3；
Chip surface pad 2 42 connects top pad 2 52 by lead 8, and top pad 2 52 is connected by Gold plated Layer
Pin 2 72, for the input grounding pin as narrow band filter 3；
Chip surface pad 3 43 connects top pad 7 57 by lead 8, and top pad seven is connected by grounding through hole two
Pin 8 78 is connect, for the grounding leg as narrow band filter 3；
Chip surface pad 4 44 connects top pad 5 55 by lead 8, and top pad 5 55 is connected by Gold plated Layer
Pin 7 77, for the output pin as narrow band filter 3；
Chip surface pad 5 45 connects top pad 6 56 by lead 8, and top pad 6 56 is connected by Gold plated Layer
Pin 6 76, for the output grounding leg as narrow band filter 3；
Chip surface pad 6 46 connects top pad 3 53 by lead 8, and top pad 3 53 passes through grounding through hole one
Pin 4 74 is connected, for the grounding leg as broadband filter 2；
Chip surface pad 7 47 connects top pad 4 54 by lead 8, and top pad 4 54 is connected by Gold plated Layer
Pin 3 73, for the input pin as broadband filter 2；
Chip surface pad 8 48 connects top pad 7 57 by lead 8, and top pad 3 57 passes through grounding through hole two
Pin 8 78 is connected, for the grounding leg as broadband filter 2；
Chip surface pad 9 49 connects top pad 8 58 by lead 8, and top pad 8 58 is connected by Gold plated Layer
Pin 5 75, for the output pin as broadband filter 2.
In the present embodiment, lead 8 is aluminum steel.
In addition, ground pad can also be set on broadband filter, ground pad by Gold plated Layer connect pin 4 74 or
Person's pin 8 78 is grounded, and further improves the performance of broadband filter.
A kind of wave filter for car key of the present utility model, is packaged using ceramic shell, cover plate and seam weld layer
Fine and close alloy is formed to realize air tight structure by forceful electric power fluidity, the entrance of air and moisture can be effectively blocked, to ceramics
Two filter chips of enclosure interior form a closed guard space structure, improve the reliability of product.
More than, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not limited to
In this, any people for being familiar with the technology is in the technical scope disclosed by the utility model, the change or replacement that can readily occur in,
It should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with claim
Protection domain is defined.
Claims (5)
1. a kind of wave filter for car key, including ceramic shell and cover plate, lead between the ceramic shell and the cover plate
Cross the connection of weld seam layer, it is characterised in that：Broadband filter and narrow band filter, the arrowband filter are packaged with the ceramic shell
Ripple device is provided with chip surface pad one to chip surface pad five, and the broadband filter is provided with chip surface pad six to core
Piece surface pads nine, top pad one is provided with the ceramic shell to top pad eight, is additionally provided with the ceramic shell
Two grounding through hole, scribble metal level in the grounding through hole, and arc groove, the circular arc are provided with outside the ceramic shell
Gold plated Layer is provided with groove, the lower surface of the ceramic shell sets pin one to pin eight；
The chip surface pad one connects top pad one by lead, and the top pad one is described gold-plated by being arranged on
Layer connection pin one, for the input pin as the narrow band filter；
The chip surface pad two connects top pad two by lead, and the top pad two is connected by the Gold plated Layer
Pin two, for the input grounding pin as the narrow band filter；
The chip surface pad three connects top pad seven by lead, and the top pad seven is connected by grounding through hole two
Pin eight, for the grounding leg as the narrow band filter；
The chip surface pad four connects top pad five by lead, and the top pad five is connected by the Gold plated Layer
Pin seven, for the output pin as the narrow band filter；
The chip surface pad five connects top pad six by lead, and the top pad six is connected by the Gold plated Layer
Pin six, for the output grounding leg as the narrow band filter；
The chip surface pad six connects top pad three by lead, and the top pad three is connected by grounding through hole one
Pin four, for the grounding leg as the broadband filter；
The chip surface pad seven connects top pad four by lead, and the top pad four is connected by the Gold plated Layer
Pin three, for the input pin as the broadband filter；
The chip surface pad eight connects top pad seven by lead, and the top pad three is connected by grounding through hole two
Pin eight, for the grounding leg as the broadband filter；
The chip surface pad nine connects top pad eight by lead, and the top pad eight is connected by the Gold plated Layer
Pin five, for the output pin as the broadband filter.
A kind of 2. wave filter for car key according to claim 1, it is characterised in that：The lead is aluminum steel.
A kind of 3. wave filter for car key according to claim 1, it is characterised in that：Narrow band filter is quartz-crystal
Body narrow band filter.
A kind of 4. wave filter for car key according to claim 1, it is characterised in that：The broadband filter is niobium
It is any in sour lithium wave filter, lithium carbonate wave filter, BAW crystal filter wave filters.
A kind of 5. wave filter for car key according to claim 1, it is characterised in that：On the broadband filter also
If ground pad, the ground pad connects the pin four or the pin eight by the Gold plated Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143134.4U CN207166467U (en) | 2017-09-07 | 2017-09-07 | A kind of wave filter for car key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143134.4U CN207166467U (en) | 2017-09-07 | 2017-09-07 | A kind of wave filter for car key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166467U true CN207166467U (en) | 2018-03-30 |
Family
ID=61720537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721143134.4U Active CN207166467U (en) | 2017-09-07 | 2017-09-07 | A kind of wave filter for car key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207166467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286386A (en) * | 2018-12-03 | 2019-01-29 | 全讯射频科技(无锡)有限公司 | The filter of integrated varistor |
| CN109379056A (en) * | 2018-12-03 | 2019-02-22 | 全讯射频科技(无锡)有限公司 | A kind of SAW filter |
-
2017
- 2017-09-07 CN CN201721143134.4U patent/CN207166467U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286386A (en) * | 2018-12-03 | 2019-01-29 | 全讯射频科技(无锡)有限公司 | The filter of integrated varistor |
| CN109379056A (en) * | 2018-12-03 | 2019-02-22 | 全讯射频科技(无锡)有限公司 | A kind of SAW filter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |