CN106129556B - Short-section line type LTCC ultra-wideband band-pass filter - Google Patents
Short-section line type LTCC ultra-wideband band-pass filter Download PDFInfo
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- CN106129556B CN106129556B CN201610762051.7A CN201610762051A CN106129556B CN 106129556 B CN106129556 B CN 106129556B CN 201610762051 A CN201610762051 A CN 201610762051A CN 106129556 B CN106129556 B CN 106129556B
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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 invention discloses a stub type LTCC ultra-wideband band-pass filter, which belongs to the technical field of filters and comprises an input port P1, an output port P2 and a filter F, wherein the LTCC multilayer structure is adopted to realize stronger broadside coupling, so that a single connecting wire in a stub structure is replaced by a broadside coupling connecting wire, higher stop band inhibition can be achieved by using a smaller order, and the designed ultra-wideband filter has the advantages of high performance and miniaturization.
Description
Technical Field
The invention belongs to the technical field of filters.
Background
Ultra-wideband technology has been rapidly developed at home and abroad as the FCC officially recommended, in february 2002, that ultra-wideband UWB communications spectrum from 3.1GHz to 10.6GHz be used without a license. Due to the advantages of high transmission rate, large system capacity, strong multipath resistance, low power consumption, low cost and the like, the method is strongly concerned and researched by scholars in various fields.
Disclosure of Invention
The invention aims to provide a stub type LTCC ultra-wideband band-pass filter which adopts an LTCC multilayer structure and realizes stronger broadside coupling, so that a single connecting line in a stub structure is replaced by a broadside coupling connecting line, higher stop band inhibition can be achieved by using a smaller order, and the designed ultra-wideband filter has the advantages of high performance and miniaturization.
In order to achieve the purpose, the invention adopts the following technical scheme:
a short-cut LTCC ultra-wideband band-pass filter comprises an input port P1, an output port P2 and a filter F;
the input port P1 is arranged on the left side of the filter F, the output port P2 is arranged on the right side of the filter F, the upper side of the filter F is provided with a grounding plate G1, the lower side of the filter F is provided with a grounding plate G2, the grounding plate G1 and the grounding plate G2 are both of a defected ground structure, the front side of the filter F is provided with a grounding plate G4, and the front and the back of the filter F are provided with grounding plates G;
the filter F comprises a first stub line, a second stub line, a first coupling connecting line, a second coupling connecting line and a single-ended open circuit parallel coupling line, wherein the first stub line and the second stub line are sequentially arranged at intervals from left to right;
the first stub and the second stub are both in a serpentine structure, the rear ends of the first stub and the second stub are both connected with a ground plate G3, the front end of the first stub is connected with an input port P1, and the front end of the second stub is connected with an output port P2;
the first coupling connecting line comprises an upper layer coupling connecting line and a lower layer coupling connecting line, the upper layer coupling connecting line and the lower layer coupling connecting line are both in a serpentine structure, the left end of the lower layer coupling connecting line is connected with the input port P1, and the left end of the upper layer coupling connecting line is arranged in a suspended mode;
the second coupling connecting line comprises an upper coupling connecting line and a lower coupling connecting line, the upper coupling connecting line and the lower coupling connecting line are both in a serpentine structure, the right end of the lower coupling connecting line is connected with the output port P2, the left end of the lower coupling connecting line is arranged in a suspended manner, and the right end of the upper coupling connecting line is arranged in a suspended manner;
the single-ended open circuit parallel coupling line comprises an upper single-ended open circuit parallel coupling line and a lower single-ended open circuit parallel coupling line, the upper single-ended open circuit parallel coupling line and the lower single-ended open circuit parallel coupling line are of a serpentine line structure, the right end of the upper coupling connecting line and the left end of the upper coupling connecting line are both connected with the rear end of the upper single-ended open circuit parallel coupling line, the rear end of the lower single-ended open circuit parallel coupling line is connected with the right end of the lower coupling connecting line, and the front ends of the upper single-ended open circuit parallel coupling line and the lower single-ended open circuit parallel coupling line are both connected with a.
The input port P1 and the output port P2 are both 50 ohm impedance ports of a coplanar waveguide structure.
The stub line type LTCC ultra-wideband band-pass filter is manufactured by a multilayer low-temperature co-fired ceramic process.
The grounding plate G1 comprises a grounding plate, a first defected ground opening, a second defected ground opening and a third defected ground opening, wherein the first defected ground opening, the second defected ground opening and the third defected ground opening are arranged at intervals from left to right in sequence;
the first defected ground opening comprises a rectangular opening, a long-strip-shaped opening and a rectangular opening, the long-strip-shaped opening is arranged in front of the rectangular opening, the rectangular opening is arranged in front of the long-strip-shaped opening, the rear end of the long-strip-shaped opening is connected with the rectangular opening, the front end of the long-strip-shaped opening is connected with the rectangular opening, and the areas of the rectangular opening and the rectangular opening are the same;
the rectangular opening, the long-strip-shaped opening and the rectangular opening are formed in the second defect place, the long-strip-shaped opening is arranged in front of the rectangular opening, the rectangular opening is arranged in front of the long-strip-shaped opening, the rear end of the long-strip-shaped opening is connected with the rectangular opening, the front end of the long-strip-shaped opening is connected with the rectangular opening, and the area of the rectangular opening is not smaller than that of the rectangular opening;
the third defected ground opening has the same structure as the first defected ground opening; ground plate G2 is identical in structure to ground plate G1.
According to the short-section type LTCC ultra-wideband band-pass filter, the LTCC multilayer structure is adopted, and strong broadside coupling is achieved, so that a single connecting line in the short-section line structure is replaced by a broadside coupling connecting line, high stop band inhibition can be achieved by using a small order, and the designed ultra-wideband filter has the advantages of high performance and miniaturization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of the internal structure of the present invention;
FIG. 3 is a top view of the internal structure of the present invention;
fig. 4 is a top view of the structure of the ground plate G1 of the present invention.
3. A first stub; 4. a second stub; 5. a first coupling connection line; 6. a second coupling connection line; 7. a single-ended open-circuit parallel coupled line; 51. an upper layer coupling connection line; 52. a lower coupling connection line;
61. an upper layer coupling connection line; 62. an upper layer coupling connection line; 71. an upper layer single-ended open circuit parallel coupling line; 72. the lower layer single-ended open circuit parallel coupling line; 11. a ground plate; 12. a first rectangular opening; 13. opening a long strip; 14. a second rectangular opening; 15. opening a rectangular opening in a second defect mode; 16. opening a long strip; 17. and a third rectangular opening.
Detailed Description
1-4, a stub LTCC ultra wideband bandpass filter comprising an input port P1, an output port P2, and a filter F;
the input port P1 is arranged on the left side of the filter F, the output port P2 is arranged on the right side of the filter F, the upper side of the filter F is provided with a grounding plate G1, the lower side of the filter F is provided with a grounding plate G2, the grounding plate G1 and the grounding plate G2 are both of a defected ground structure, the front side of the filter F is provided with a grounding plate G4, and the front and the back of the filter F are provided with grounding plates G;
the filter F comprises a first stub 3, a second stub 4, a first coupling connecting line 5, a second coupling connecting line 6 and a single-ended open circuit parallel coupling line 7, wherein the first stub 3 and the second stub 4 are sequentially arranged at intervals from left to right, the first coupling connecting line 5 and the second coupling connecting line 6 are sequentially arranged at intervals from left to right, the first coupling connecting line 5 is arranged in front of the first stub 3 at intervals, the second coupling connecting line 6 is arranged in front of the second stub 4 at intervals, and the single-ended open circuit parallel coupling line 7 is positioned in front of the first coupling connecting line 5 and the second coupling connecting line 6;
the first stub 3 and the second stub 4 are both in a serpentine structure, the rear ends of the first stub 3 and the second stub 4 are both connected with a ground plate G3, the front end of the first stub 3 is connected with an input port P1, and the front end of the second stub 4 is connected with an output port P2;
the first coupling connecting line 5 comprises an upper coupling connecting line 51 and a lower coupling connecting line 52, the upper coupling connecting line 51 and the lower coupling connecting line 52 are both in a serpentine structure, the left end of the lower coupling connecting line 52 is connected with the input port P1, and the left end of the upper coupling connecting line 51 is arranged in a suspended manner;
the second coupling connection line 6 comprises an upper coupling connection line 61 and a lower coupling connection line 62, the upper coupling connection line 61 and the lower coupling connection line 62 are both in a serpentine structure, the right end of the lower coupling connection line 62 is connected with the output port P2, the left end of the lower coupling connection line 62 is arranged in a suspended manner, and the right end of the upper coupling connection line 61 is arranged in a suspended manner;
the single-ended open circuit parallel coupling line 7 comprises an upper single-ended open circuit parallel coupling line 71 and a lower single-ended open circuit parallel coupling line 72, the upper single-ended open circuit parallel coupling line 71 and the lower single-ended open circuit parallel coupling line 72 are of a serpentine structure, the right end of the upper coupling connection line 51 and the left end of the upper coupling connection line 61 are both connected with the rear end of the upper single-ended open circuit parallel coupling line 71, the rear end of the lower single-ended open circuit parallel coupling line 72 is connected with the right end of the lower coupling connection line 52, and the front ends of the upper single-ended open circuit parallel coupling line 71 and the lower single-ended open circuit parallel coupling line 72 are both connected with the ground.
The input port P1 and the output port P2 are both 50 ohm impedance ports of a coplanar waveguide structure.
The stub line type LTCC ultra-wideband band-pass filter is manufactured by a multilayer low-temperature co-fired ceramic process.
The ground plate G1 comprises a ground plate 11, a first defected ground opening, a second defected ground opening and a third defected ground opening, wherein the first defected ground opening, the second defected ground opening and the third defected ground opening are arranged at intervals from left to right in sequence;
the first defected ground opening comprises a first rectangular opening 12, a long strip opening 13 and a second rectangular opening 14, the long strip opening 13 is arranged in front of the first rectangular opening 12, the second rectangular opening 14 is arranged in front of the long strip opening 13, the rear end of the long strip opening 13 is connected with the first rectangular opening 12, the front end of the long strip opening 13 is connected with the second rectangular opening 14, and the areas of the first rectangular opening 12 and the second rectangular opening 14 are the same;
a rectangular opening 15, a long-strip-shaped opening 16 and a third rectangular opening 17 are formed in the second defect place, the long-strip-shaped opening 16 is arranged in front of the rectangular opening 15, the third rectangular opening 17 is arranged in front of the long-strip-shaped opening 16, the rear end of the long-strip-shaped opening 16 is connected with the rectangular opening 15, the front end of the long-strip-shaped opening 16 is connected with the third rectangular opening 17, and the area of the rectangular opening 15 is not smaller than that of the third rectangular opening 17;
the third defected ground opening has the same structure as the first defected ground opening; ground plate G2 is identical in structure to ground plate G1.
The invention relates to an ultra-wideband band-pass filter with a bandwidth of 3.1-10.6 GHz, the insertion loss of a pass band is less than 1.5dB, the VSWR is better than 1.5, the attenuation of a high-resistance band at 11.8-15 GHz can reach 30dB, and the size is only 5mm multiplied by 3.6mm multiplied by 1.5 mm.
According to the stub type LTCC ultra-wideband band-pass filter, on the basis of the structure of a traditional parallel stub band-pass filter, a coupling connecting line is adopted to replace a single connecting line, sideband attenuation is effectively improved, two transmission zeros are introduced into the sideband through a single-ended short-circuited parallel coupling line, and high-end stop band attenuation is improved by adding the dumbbell type DGS. The filter has the advantages of small volume, high performance, scientific design method, high use value and batch production.
According to the short-section type LTCC ultra-wideband band-pass filter, the LTCC multilayer structure is adopted, and strong broadside coupling is achieved, so that a single connecting line in the short-section line structure is replaced by a broadside coupling connecting line, high stop band inhibition can be achieved by using a small order, and the designed ultra-wideband filter has the advantages of high performance and miniaturization.
Claims (4)
1. The utility model provides a stub formula LTCC ultra wide band pass filter which characterized in that: comprises an input port P1, an output port P2 and a filter F;
the input port P1 is arranged on the left side of the filter F, the output port P2 is arranged on the right side of the filter F, the upper side of the filter F is provided with a grounding plate G1, the lower side of the filter F is provided with a grounding plate G2, the grounding plate G1 and the grounding plate G2 are both of a defected ground structure, the front side of the filter F is provided with a grounding plate G4, and the front and the back of the filter F are provided with grounding plates G;
the filter F comprises a first stub (3), a second stub (4), a first coupling connecting line (5), a second coupling connecting line (6) and a single-ended open-circuit parallel coupling line (7), wherein the first stub (3) and the second stub (4) are sequentially arranged at intervals from left to right, the first coupling connecting line (5) and the second coupling connecting line (6) are sequentially arranged at intervals from left to right, the first coupling connecting line (5) is arranged in front of the first stub (3) at intervals, the second coupling connecting line (6) is arranged in front of the second stub (4) at intervals, and the open-circuit parallel coupling line (7) is positioned in front of the first coupling connecting line (5) and the second coupling connecting line (6);
the first stub (3) and the second stub (4) are both in a serpentine structure, the rear ends of the first stub (3) and the second stub (4) are both connected with a ground plate G3, the front end of the first stub (3) is connected with an input port P1, and the front end of the second stub (4) is connected with an output port P2;
the first coupling connecting line (5) comprises an upper coupling connecting line (51) and a lower coupling connecting line (52), the upper coupling connecting line (51) and the lower coupling connecting line (52) are both in a serpentine line structure, the left end of the lower coupling connecting line (52) is connected with the input port P1, and the left end of the upper coupling connecting line (51) is arranged in a suspended mode;
the second coupling connecting line (6) comprises an upper coupling connecting line (61) and a lower coupling connecting line (62), the upper coupling connecting line (61) and the lower coupling connecting line (62) are both in a serpentine line structure, the right end of the lower coupling connecting line (62) is connected with the output port P2, the left end of the lower coupling connecting line (62) is arranged in a suspended mode, and the right end of the upper coupling connecting line (61) is arranged in a suspended mode;
the single-ended open circuit parallel coupling line (7) comprises an upper single-ended open circuit parallel coupling line (71) and a lower single-ended open circuit parallel coupling line (72), the upper single-ended open circuit parallel coupling line (71) and the lower single-ended open circuit parallel coupling line (72) are of a serpentine structure, the right end of the upper coupling connecting line (51) and the left end of the upper coupling connecting line (61) are both connected with the rear end of the upper single-ended open circuit parallel coupling line (71), the rear end of the lower single-ended open circuit parallel coupling line (72) is connected with the right end of the lower coupling connecting line (52), and the front ends of the upper single-ended open circuit parallel coupling line (71) and the lower single-ended open circuit parallel coupling line (72) are both connected with a grounding plate G.
2. A stub-type LTCC ultra wideband bandpass filter as claimed in claim 1 wherein: the input port P1 and the output port P2 are both 50 ohm impedance ports of a coplanar waveguide structure.
3. A stub-type LTCC ultra wideband bandpass filter as claimed in claim 1 wherein: the stub line type LTCC ultra-wideband band-pass filter is manufactured by a multilayer low-temperature co-fired ceramic process.
4. A stub-type LTCC ultra wideband bandpass filter as claimed in claim 1 wherein: the grounding plate G1 comprises a grounding plate (11), a first defected ground opening, a second defected ground opening and a third defected ground opening, wherein the first defected ground opening, the second defected ground opening and the third defected ground opening are arranged at intervals from left to right in sequence;
the first defected ground opening comprises a first rectangular opening (12), a long-strip-shaped opening (13) and a second rectangular opening (14), the long-strip-shaped opening (13) is arranged in front of the first rectangular opening (12), the second rectangular opening (14) is arranged in front of the long-strip-shaped opening (13), the rear end of the long-strip-shaped opening (13) is connected with the first rectangular opening (12), the front end of the long-strip-shaped opening (13) is connected with the second rectangular opening (14), and the areas of the first rectangular opening (12) and the second rectangular opening (14) are the same;
a rectangular opening (15), a long-strip-shaped opening (16) and a third rectangular opening (17) are formed in the second defect place, the long-strip-shaped opening (16) is arranged in front of the rectangular opening (15), the third rectangular opening (17) is arranged in front of the long-strip-shaped opening (16), the rear end of the long-strip-shaped opening (16) is connected with the rectangular opening (15), the front end of the long-strip-shaped opening (16) is connected with the third rectangular opening (17), and the area of the rectangular opening (15) is not smaller than that of the third rectangular opening (17);
the third defected ground opening has the same structure as the first defected ground opening; ground plate G2 is identical in structure to ground plate G1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610762051.7A CN106129556B (en) | 2016-08-28 | 2016-08-28 | Short-section line type LTCC ultra-wideband band-pass filter |
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| CN201610762051.7A CN106129556B (en) | 2016-08-28 | 2016-08-28 | Short-section line type LTCC ultra-wideband band-pass filter |
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| CN106129556B true CN106129556B (en) | 2020-06-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109950670B (en) * | 2019-02-22 | 2020-11-17 | 南京理工大学 | LTCC-based double-end open-circuit coupling line loading stub ultra-wideband filter |
| CN110380163A (en) * | 2019-04-24 | 2019-10-25 | 南京理工大学 | LTCC bimodulus ultra-wide band filter based on defect ground structure |
| CN114335940B (en) * | 2021-11-06 | 2023-04-28 | 南京理工大学 | Novel ultra-wideband band-pass filter based on LTCC technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW517407B (en) * | 2000-12-06 | 2003-01-11 | Advanced Ceramic X Corp | High frequency bandpass filter and its manufacturing method |
| CN102136615A (en) * | 2011-01-10 | 2011-07-27 | 西安交通大学 | LTCC-based miniaturized X-wave band band-pass filter |
| CN104638323A (en) * | 2015-02-06 | 2015-05-20 | 南京理工大学 | High-selectivity broadband multi-order band-pass filter based on LTCC (Low Temperature Co-Fired Ceramic) technology |
| CN105024120A (en) * | 2015-07-13 | 2015-11-04 | 南京理工大学 | X wave band and Ku wave band mixing duplex filter |
| CN206059604U (en) * | 2016-08-28 | 2017-03-29 | 戴永胜 | A kind of cutting back line style LTCC ultra wide band bandpass filter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI361513B (en) * | 2008-03-21 | 2012-04-01 | Univ Nat Chiao Tung | Compact single-to-balanced bandpass filter |
| TWM517407U (en) * | 2015-09-25 | 2016-02-11 | Bond Shine Co Ltd | Cleaning device |
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- 2016-08-28 CN CN201610762051.7A patent/CN106129556B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW517407B (en) * | 2000-12-06 | 2003-01-11 | Advanced Ceramic X Corp | High frequency bandpass filter and its manufacturing method |
| CN102136615A (en) * | 2011-01-10 | 2011-07-27 | 西安交通大学 | LTCC-based miniaturized X-wave band band-pass filter |
| CN104638323A (en) * | 2015-02-06 | 2015-05-20 | 南京理工大学 | High-selectivity broadband multi-order band-pass filter based on LTCC (Low Temperature Co-Fired Ceramic) technology |
| CN105024120A (en) * | 2015-07-13 | 2015-11-04 | 南京理工大学 | X wave band and Ku wave band mixing duplex filter |
| CN206059604U (en) * | 2016-08-28 | 2017-03-29 | 戴永胜 | A kind of cutting back line style LTCC ultra wide band bandpass filter |
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