CN107508018A - A kind of multilayer ultra-wide band filter - Google Patents
A kind of multilayer ultra-wide band filter Download PDFInfo
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- CN107508018A CN107508018A CN201710794764.6A CN201710794764A CN107508018A CN 107508018 A CN107508018 A CN 107508018A CN 201710794764 A CN201710794764 A CN 201710794764A CN 107508018 A CN107508018 A CN 107508018A
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- snakelike
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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
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
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Abstract
The present invention relates to microwave communication system regions, more particularly to a kind of multi-layer ceramics ultra-wideband high-pass filter.A kind of multilayer ceramic filter, including external electrode, interior electrode, multiple flaky pottery dielectric layers stacked together；External electrode is made up of the metal electrode of bonding and the metal end electrodes of input and output；Interior electrode is coated with each flaky pottery medium layer plane, interior electrode includes：2 layers of bonding electrode, 4 banding export line electrodes, 2 snakelike grounding electrodes, wherein banding export line electrode and its form input and output coupled capacitor in-between with snakelike grounding electrode, can adjust bandwidth and cut-off frequency；By structure optimization of the interior electrode on different flaky pottery dielectric layers, the wave filter of different electrical properties can be designed in identical wave filter volume, and effectively improve the uniformity of technique, reliability.
Description
Technical field
The present invention relates to microwave communication system regions, more particularly to a kind of multi-layer ceramics ultra-wideband high-pass filter.
Background technology
With the rapid development of communication technology, requirement of the people to radio communication is not only only that simple speech exchange,
But pursue the wireless communication system of the big data quantities such as HD video and high security.Ultra wide band (UWB) wireless communication technology with
The features such as its system architecture is simple, cost is low, small power consumption, transmission rate are high, good confidentiality is as current wireless communication field
One study hotspot.2 months 2002, FCC (FCC) have approved UWB technology and be led in short-distance wireless communication
The application in domain, this frequency range of 3.1GHz to 10.6GHz has been opened as commercial.UWB technology has broad application prospects, such as
The various fields such as Technology in High-speed WPAN, wireless ether interface link, intelligent wireless local area network have a wide range of applications.As
One of Primary Component in UWB communication systems, ultra-wide band filter but has higher design difficulty.
Realize that the method for ultra-wide band filter is varied at present, in order to realize that it is very strong that so wide bandwidth generally requires
Coupling, so the substrate that most ultra-wide band filter for realizing at present uses has, larger dielectric constant or thickness are higher, this for
Microwave applications can bring larger signal delay.And the broadband filter of 1/4 wave resonator of cascade is used with larger
Size.
The content of the invention
It is an object of the invention to overcome shortcoming and deficiency of the prior art, there is provided a kind of multilayer ultra-wide band filter,
The ultra-wide band filter is ingenious to utilize three-dimensional space layout, formation ultra wide band according to the high low pass series equivalent circuit of modified
Wave filter；Pass band width is greatly expanded, it is achieved thereby that ultra wide band filter function, solves the receiving terminal of ultra-wideband antenna
Filtering problem,
In order to realize above-mentioned purpose, present invention employs following technical scheme：
A kind of multilayer ultra-wide band filter, it is characterised in that the multilayer ultra-wide band filter includes：
Layered product, layered product are made up of multilayer insulation dielectric layer, and the surface of layered product is provided with the output of the first outside input
Electrode, the second outside input output electrode, the first external ground electrode and the second external ground electrode；
First bonding electrode and secondary shielding grounding electrode, it is sequentially placed into the orlop insulation of the inside of the wave filter
Dielectric layer and the superiors' insulating medium layer, two layers of bonding electrode with the first external ground electrode and the second external ground
Electrode is connected；
First snakelike input and output capacitance sheet, the second snakelike input and output capacitance sheet, the 3rd snakelike input and output capacitance sheet
With the 4th snakelike input and output capacitance sheet, 4 snakelike input and output capacitance sheets are located at different insulating medium layers, 4 snakes respectively
Shape input and output capacitance sheet couples to form input and output with the first bonding electrode and secondary shielding grounding electrode interlayer respectively
Electric capacity C1 and the equivalent small inductor L1 of the serpentine of itself, the first snakelike input and output capacitance sheet and the second snakelike input
Output capacitance piece is connected with the first outside input output electrode, and the 3rd snakelike input and output capacitance sheet and the 4th snakelike input are defeated
Go out capacitance sheet with the second outside input output electrode to be connected；
First snakelike grounding electrode and the second snakelike grounding electrode, two snakelike grounding electrodes pass through the first tiny inductance
Lines and the second inductance lines are connected with the first ground connection external electrode, form equivalent lower ground inductance L2；Two snakelike grounding electrodes
With the first snakelike input and output capacitance sheet, the second snakelike input and output capacitance sheet, the 3rd snakelike input and output capacitance sheet and the 4th
Snakelike input and output capacitance sheet forms coupling input capacitance C2, and the part serpentine that this two snakelike grounding electrodes are set is formed
Coupling up and down, along with the equivalent inductance effect of itself, form equivalent inductance L3 and equivalent capacity C3.
As a further improvement, described layered product is made up of 7 layers of insulating medium layer, the respectively first insulation from the bottom to top
Dielectric layer, the second insulating medium layer, the 3rd insulating medium layer, the 4th insulating medium layer, the 5th insulating medium layer, the 6th insulation are situated between
Matter layer, the 7th insulating medium layer；It is exhausted that the first described bonding electrode and secondary shielding grounding electrode are separately positioned on first
The upper surface of edge dielectric layer and the 6th insulating medium layer；First snakelike input and output capacitance sheet and the second snakelike input and output electric capacity
Piece is respectively on the left of the upper surface of the second insulating medium layer and the 4th insulating medium layer；3rd snakelike input and output capacitance sheet and
4th snakelike input and output capacitance sheet is respectively on the right side of the upper surface of the 3rd insulating medium layer and the 5th insulating medium layer；First
Snakelike grounding electrode is located on the left of the upper surface of the 3rd insulating medium layer, and the second snakelike grounding electrode is located at the 4th insulating medium layer
Upper surface on the right side of.
As a further improvement, it is metallic conductor coated in each pattern on each insulating medium layer.
The present invention by using new high low pass series coupled mode, using in LTCC devices can stereoscopic arrangement it is excellent
Gesture, the ultra-wide band filter of the stopband inhibition characteristic of the pass-band performance, high passband selectivity and the superelevation that have had is designed,
The ultra-wide band filter is particularly suitable for application in the ultra-wideband communication system in short-distance wireless communication.
Brief description of the drawings
Fig. 1 is the decomposition diagram of the multilayer ceramic filter of a preferred embodiment of the present invention；
Fig. 2 is the outer surface structure schematic diagram of multilayer ceramic filter of the present invention；
Fig. 3 is the frequency characteristic curve diagram of multilayer ceramic filter shown in Fig. 1；
Fig. 4 is the equivalent electrical schematic diagram for the ceramic filter implemented according to the present invention.
Embodiment
The embodiment of the present invention is made a detailed explanation below in conjunction with the accompanying drawings.
Such as Fig. 1, a kind of multilayer ultra-wide band filter as shown in Figure 2, the multilayer ultra-wide band filter includes：
Layered product 201, layered product 201 are made up of multilayer insulation dielectric layer, and layered product 201 is made up of 7 layers of insulating medium layer,
It is respectively the first insulating medium layer 101, the second insulating medium layer 102, the insulation of the 3rd insulating medium layer the 103, the 4th from the bottom to top
Dielectric layer 104, the 5th insulating medium layer 105, the 6th insulating medium layer 106, the 7th insulating medium layer 107；The table of layered product 201
Face is provided with the first outside input output electrode 204, the second outside input output electrode 205, the and of the first external ground electrode 202
Second external ground electrode 203；
First bonding electrode 1011 and secondary shielding grounding electrode 1061, the first described bonding electrode 1011
The upper surface of the first insulating medium layer 101 and the 6th insulating medium layer 106 is separately positioned on secondary shielding grounding electrode 1061,
Two layers of bonding electrode is connected with the first external ground electrode 202 and the second external ground electrode 203；
First snakelike input and output capacitance sheet 1021, the second snakelike input and output capacitance sheet 1043, the 3rd snakelike input are defeated
Go out 1031 and the 4th snakelike input and output capacitance sheet 1051 of capacitance sheet, the first snakelike input and output capacitance sheet 1021 and second is snakelike
Input and output capacitance sheet 1043 is respectively on the left of the upper surface of the second insulating medium layer 102 and the 4th insulating medium layer 104；The
Three snakelike 1031 and the 4th snakelike input and output capacitance sheets 1051 of input and output capacitance sheet are located at the 3rd insulating medium layer 103 respectively
On the right side of the upper surface of the 5th insulating medium layer 105；4 snakelike input and output capacitance sheets respectively with the first bonding electrode
1011 and the layer coupling of secondary shielding grounding electrode 1061 formed input and output electric capacity C1 and the serpentine of itself it is equivalent one
Individual small inductor L1 (such as Fig. 4), the first snakelike 1021 and second snakelike input and output capacitance sheet 1043 of input and output capacitance sheet and
One outside input output electrode 204 is connected, the 3rd snakelike 1031 and the 4th snakelike input and output electric capacity of input and output capacitance sheet
Piece 1051 is connected with the second outside input output electrode 205；
First snakelike 1034 and second snakelike grounding electrode 1041 of grounding electrode, the first snakelike grounding electrode 1034 is positioned at the
On the left of the upper surface of three insulating medium layers 103, the second snakelike grounding electrode 1041 is located at the upper surface of the 4th insulating medium layer 104
Right side.Two snakelike grounding electrodes outside tiny the first inductance lines 1033 and the second inductance lines 1042 and first by connecing
Ground electrode 202 is connected, and forms equivalent lower ground inductance L2；Two snakelike grounding electrodes and the first snakelike input and output capacitance sheet
1021st, the second snakelike input and output capacitance sheet 1043, the 3rd snakelike 1031 and the 4th snakelike input and output of input and output capacitance sheet
Capacitance sheet 1051, which is formed, couples input capacitance C2 (such as Fig. 4), and the part serpentine 1032 of this two snakelike grounding electrodes settings,
1044 form coupling up and down, along with the equivalent inductance effect of itself, form equivalent inductance L3 and equivalent capacity C3 (such as Fig. 4).
In Fig. 1, the dash area with oblique line is metallic conductor, such as the material such as Ag, Cu, Au or other metallic compound,
Formed by printing, evaporating the technologies such as coating.
Although being specifically illustrating and describing this patent with reference to preferred embodiment, those skilled in the art will be bright
In vain, in the case of the spirit and scope without prejudice to this patent, other changes can be made in form and details.
Claims (3)
1. a kind of multilayer ultra-wide band filter, it is characterised in that the multilayer ultra-wide band filter includes：
Layered product, layered product are made up of multilayer insulation dielectric layer, the surface of layered product be provided with the first outside input output electrode,
Second outside input output electrode, the first external ground electrode and the second external ground electrode；
First bonding electrode and secondary shielding grounding electrode, it is sequentially placed into the superiors' dielectric of the inside of the wave filter
Layer and orlop insulating medium layer, two layers of bonding electrode are electric with the first external ground electrode and the second external ground respectively
Extremely it is connected；
First snakelike input and output capacitance sheet, the second snakelike input and output capacitance sheet, the 3rd snakelike input and output capacitance sheet and
Four snakelike input and output capacitance sheets, 4 snakelike input and output capacitance sheets are located at different insulating medium layers respectively, and 4 snakelike defeated
Enter output capacitance piece to couple with the first bonding electrode and secondary shielding grounding electrode interlayer respectively and to form input and output electric capacity
C1 and the equivalent small inductor L1 of the serpentine of itself, the first snakelike input and output capacitance sheet and the second snakelike input and output
Capacitance sheet is connected with the first outside input output electrode, the 3rd snakelike input and output capacitance sheet and the 4th snakelike input and output electricity
Hold piece with the second outside input output electrode to be connected；
First snakelike grounding electrode and the second snakelike grounding electrode, two snakelike grounding electrodes pass through the first tiny inductance lines
It is connected with the second inductance lines with the first ground connection external electrode, forms equivalent lower ground inductance L2；Two snakelike grounding electrodes and
One snakelike input and output capacitance sheet, the second snakelike input and output capacitance sheet, the 3rd snakelike input and output capacitance sheet and the 4th are snakelike
Input and output capacitance sheet forms coupling input capacitance C2, and the part serpentine that this two snakelike grounding electrodes are set is formed up and down
Coupling, along with the equivalent inductance effect of itself, form equivalent inductance L3 and equivalent capacity C3.
2. a kind of multilayer ultra-wide band filter according to claim 1, it is characterised in that layered product is by 7 layers of dielectric
Layer composition, from the bottom to top respectively the first insulating medium layer, the second insulating medium layer, the 3rd insulating medium layer, the 4th insulation are situated between
Matter layer, the 5th insulating medium layer, the 6th insulating medium layer, the 7th insulating medium layer；The first described bonding electrode and
Two bonding electrodes are separately positioned on the upper surface of the first insulating medium layer and the 6th insulating medium layer；First snakelike input is defeated
Go out capacitance sheet and the second snakelike input and output capacitance sheet respectively positioned at the upper table of the second insulating medium layer and the 4th insulating medium layer
Left side of face；3rd snakelike input and output capacitance sheet and the 4th snakelike input and output capacitance sheet respectively positioned at the 3rd insulating medium layer and
On the right side of the upper surface of 5th insulating medium layer；First snakelike grounding electrode is located on the left of the upper surface of the 3rd insulating medium layer, the
Two snakelike grounding electrodes are located on the right side of the upper surface of the 4th insulating medium layer.
3. a kind of multilayer ultra-wide band filter according to claim 1, it is characterised in that coated on each insulating medium layer
Each pattern be metallic conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794764.6A CN107508018B (en) | 2017-09-06 | 2017-09-06 | Multilayer ultra-wideband filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794764.6A CN107508018B (en) | 2017-09-06 | 2017-09-06 | Multilayer ultra-wideband filter |
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| CN107508018A true CN107508018A (en) | 2017-12-22 |
| CN107508018B CN107508018B (en) | 2020-11-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429920A (en) * | 2019-09-04 | 2019-11-08 | 研创光电科技（赣州）有限公司 | A kind of miniature multilayer ceramic band-pass filter |
| CN115377633A (en) * | 2022-08-09 | 2022-11-22 | 中国电子科技集团公司第四十三研究所 | High-pass filter with out-of-band rapid attenuation and ultra-wideband performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110429920A (en) * | 2019-09-04 | 2019-11-08 | 研创光电科技（赣州）有限公司 | A kind of miniature multilayer ceramic band-pass filter |
| CN115377633A (en) * | 2022-08-09 | 2022-11-22 | 中国电子科技集团公司第四十三研究所 | High-pass filter with out-of-band rapid attenuation and ultra-wideband performance |
| CN115377633B (en) * | 2022-08-09 | 2023-12-08 | 中国电子科技集团公司第四十三研究所 | High-pass filter with out-of-band rapid attenuation and ultra-wideband performance |
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| Publication number | Publication date |
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| CN107508018B (en) | 2020-11-17 |
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