CN106129556A - A kind of cutting back line style LTCC ultra wide band bandpass filter - Google Patents
A kind of cutting back line style LTCC ultra wide band bandpass filter Download PDFInfo
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- CN106129556A CN106129556A CN201610762051.7A CN201610762051A CN106129556A CN 106129556 A CN106129556 A CN 106129556A CN 201610762051 A CN201610762051 A CN 201610762051A CN 106129556 A CN106129556 A CN 106129556A
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- line
- coupled connections
- coupled
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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 kind of cutting back line style LTCC ultra wide band bandpass filter, belong to wave filter technology field, including input port P1, output port P2 and wave filter F, use LTCC multiple structure, achieve stronger broadside coupled, thus replace the singular association line in short circuit transversal structure with broadside coupled connecting line, just can reach higher stopband suppression with less exponent number, make the ultra-wide band filter of design have the advantage of high-performance, miniaturization.
Description
Technical field
The invention belongs to wave filter technology field.
Background technology
Along with Federal Communications Committee FCC in February, 2002 rise Formal Proposals just can use without licence from
The ultra broadband UWB communication spectrum of 3.1GHz to 10.6GHz, super-broadband tech has at home and abroad obtained quick development.Due to it
Transfer rate is high, power system capacity is big, ability of anti-multipath is strong, low in energy consumption, low cost and other advantages, receives the strong pass of all circles scholar
Note and research.
Summary of the invention
It is an object of the invention to provide a kind of cutting back line style LTCC ultra wide band bandpass filter, use LTCC multiple structure,
Achieve stronger broadside coupled, thus replace the singular association line in short circuit transversal structure with broadside coupled connecting line, with relatively
Little exponent number just can reach higher stopband suppression, makes the ultra-wide band filter of design have the advantage of high-performance, miniaturization.
For achieving the above object, the present invention is by the following technical solutions:
A kind of cutting back line style LTCC ultra wide band bandpass filter, including input port P1, output port P2 and wave filter F；
Input port P1 is located at the left side of wave filter F, and output port P2 is located at the right of wave filter F, and wave filter F top sets
There are earth plate G1, wave filter F to be provided with earth plate G2, earth plate G1 and earth plate G2 below and are defect ground structure, wave filter F's
Front is provided with earth plate G4, is provided with earth plate G3 before and after wave filter F；
Wave filter F include the first stub, the second stub, first be of coupled connections line, second be of coupled connections line and single-ended
Open circuit parallel coupled line, the first stub and the second stub for being spaced setting the most successively, first be of coupled connections line and
Second line that is of coupled connections is for being spaced setting the most successively, and first is of coupled connections before line is arranged at intervals at the first stub
Limit, second line that is of coupled connections is arranged at intervals at the front of the second stub, and single-ended open circuit parallel coupled line is positioned at the first coupling even
Wiring and second is of coupled connections the front of line；
First stub and the second stub are serpentine structure, and the rear end of the first stub and the second stub all connects
Meeting earth plate G3, the front end of the first stub connects input port P1, and the front end of the second stub connects output port P2；
First line that is of coupled connections includes that upper strata is of coupled connections line and lower floor is of coupled connections line, and upper strata is of coupled connections line and lower floor
The line that is of coupled connections is serpentine structure, and the be of coupled connections left end of line of lower floor connects input port P1, and upper strata is of coupled connections line
Left end is unsettled setting；
Second line that is of coupled connections includes that upper strata is of coupled connections line and lower floor is of coupled connections line, and upper strata is of coupled connections line and lower floor
The line that is of coupled connections is serpentine structure, and the be of coupled connections right-hand member of line of lower floor connects output port P2, and lower floor is of coupled connections line
Left end is unsettled setting, and the be of coupled connections right-hand member of line of upper strata is unsettled setting；
Single-ended open circuit parallel coupled line includes the single-ended open circuit in upper strata parallel coupled line and lower floor single-ended open circuit parallel coupled line,
The single-ended open circuit in upper strata parallel coupled line and lower floor single-ended open circuit parallel coupled line is serpentine structure, and upper strata is of coupled connections line
The be of coupled connections left end of line of right-hand member and upper strata is all connected with the rear end of the single-ended open circuit in upper strata parallel coupled line, and the single-ended open circuit of lower floor is in parallel
The rear end of coupling line connects lower floor and is of coupled connections the right-hand member of line, and the single-ended open circuit of the single-ended open circuit in upper strata parallel coupled line and lower floor is in parallel
The front end of coupling line is all connected with earth plate G4.
Described input port P1 and output port P2 is the port of 50 ohmages of coplanar waveguide structure.
Described a kind of cutting back line style LTCC ultra wide band bandpass filter is made up of multilamellar LTCC technique.
Described earth plate G1 includes earth plate, the first defect ground perforate, the second defect ground perforate and the ground perforate of the 3rd defect,
First defect ground perforate, the second defect ground perforate and the ground perforate of the 3rd defect are for being spaced setting the most successively；
First defect ground perforate includes rectangle opening, strip perforate and rectangle opening, and the front of rectangle opening is provided with length
Bar shaped perforate, the front of strip perforate is provided with rectangle opening, and the rear end of strip perforate is connected with rectangle opening, and strip is opened
The front end in hole is connected with rectangle opening, and rectangle opening is identical with the area of rectangle opening；
Second defect ground perforate rectangle opening, strip perforate and rectangle opening, the front of rectangle opening is provided with strip
Perforate, the front of strip perforate is provided with rectangle opening, and the rear end of strip perforate is connected with rectangle opening, strip perforate
Front end is connected with rectangle opening, and the area of rectangle opening is not less than the area of rectangle opening；
3rd defect ground perforate is identical with the structure of described first defect ground perforate；The structure of earth plate G2 and earth plate G1
Identical.
A kind of cutting back line style LTCC ultra wide band bandpass filter of the present invention, uses LTCC multiple structure, it is achieved that
Stronger is broadside coupled, thus replaces the singular association line in short circuit transversal structure with broadside coupled connecting line, with less rank
Number just can reach higher stopband suppression, makes the ultra-wide band filter of design have the advantage of high-performance, miniaturization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the internal structure axonometric chart of the present invention；
Fig. 3 is the internal structure top view of the present invention；
Fig. 4 is the structure top view of the earth plate G1 of the present invention.
3, the first stub；4, the second stub；5, first it is of coupled connections line；6, second it is of coupled connections line；7, single-ended disconnected
Road parallel coupled line；51, upper strata is of coupled connections line；52, lower floor is of coupled connections line；61, upper strata is of coupled connections line；62, upper strata coupling
Close connecting line；71, the single-ended open circuit in upper strata parallel coupled line；72, lower floor's single-ended open circuit parallel coupled line；11, earth plate；12, square
Shape perforate；13, strip perforate；14, rectangle opening；15, perforate rectangle opening；16, strip perforate；17, rectangle opening.
Detailed description of the invention
A kind of cutting back line style LTCC ultra wide band bandpass filter as Figure 1-4, including input port P1, output port
P2 and wave filter F；
Input port P1 is located at the left side of wave filter F, and output port P2 is located at the right of wave filter F, and wave filter F top sets
There are earth plate G1, wave filter F to be provided with earth plate G2, earth plate G1 and earth plate G2 below and are defect ground structure, wave filter F's
Front is provided with earth plate G4, is provided with earth plate G3 before and after wave filter F；
Wave filter F include first stub the 3, second stub 4, first be of coupled connections line 5, second be of coupled connections line 6 and
Single-ended open circuit parallel coupled line 7, the first stub 3 and the second stub 4 are for being spaced setting the most successively, and the first coupling is even
Be of coupled connections line 6 of wiring 5 and second is for being spaced setting the most successively, and first is of coupled connections, and to be arranged at intervals at first short for line 5
The front of transversal 3, second line 6 that is of coupled connections is arranged at intervals at the front of the second stub 4,7, single-ended open circuit parallel coupled line
It is of coupled connections the front of line 6 in first line 5 and second that is of coupled connections；
First stub 3 and the second stub 4 are serpentine structure, the first stub 3 and rear end of the second stub 4
Being all connected with earth plate G3, the front end of the first stub 3 connects input port P1, and the front end of the second stub 4 connects output port
P2；
First line 5 that is of coupled connections includes that upper strata is of coupled connections line 51 and lower floor is of coupled connections line 52, and upper strata is of coupled connections line
51 and lower floor's line 52 that is of coupled connections be serpentine structure, the be of coupled connections left end of line 52 of lower floor connects input port P1, upper strata
The left end of line 51 of being of coupled connections is unsettled setting；
Second line 6 that is of coupled connections includes that upper strata is of coupled connections line 61 and lower floor is of coupled connections line 62, and upper strata is of coupled connections line
61 and lower floor's line 62 that is of coupled connections be serpentine structure, the be of coupled connections right-hand member of line 62 of lower floor connects output port P2, lower floor
The left end of line 62 of being of coupled connections is unsettled setting, and the be of coupled connections right-hand member of line 61 of upper strata is unsettled setting；
Single-ended open circuit parallel coupled line 7 includes the single-ended open circuit in upper strata parallel coupled line 71 and lower floor's single-ended open circuit parallel coupled
Line 72, the single-ended open circuit in upper strata parallel coupled line 71 and lower floor's single-ended open circuit parallel coupled line 72 are serpentine structure, upper strata coupling
Close the right-hand member of connecting line 51 and the be of coupled connections left end of line 61 of upper strata be all connected with the rear end of the single-ended open circuit in upper strata parallel coupled line 71,
The rear end of lower floor's single-ended open circuit parallel coupled line 72 connects lower floor and is of coupled connections the right-hand member of line 52, the single-ended open circuit in upper strata parallel coupled
The front end of line 71 and lower floor single-ended open circuit parallel coupled line 72 is all connected with earth plate G4.
Described input port P1 and output port P2 is the port of 50 ohmages of coplanar waveguide structure.
Described a kind of cutting back line style LTCC ultra wide band bandpass filter is made up of multilamellar LTCC technique.
Described earth plate G1 opens with including the ground perforate of earth plate the 11, first defect, the second defect ground perforate and the 3rd defect
Hole, the first defect ground perforate, the second defect ground perforate and the ground perforate of the 3rd defect are for being spaced setting the most successively；
First defect ground perforate includes rectangle opening 12, strip perforate 13 and rectangle opening 14, before rectangle opening 12
Side is provided with strip perforate 13, and the front of strip perforate 13 is provided with rectangle opening 14, the rear end of strip perforate 13 and rectangle
Perforate 12 connects, and the front end of strip perforate 13 is connected with rectangle opening 14, the area phase of rectangle opening 12 and rectangle opening 14
With；
Second defect ground perforate rectangle opening 15, strip perforate 16 and rectangle opening 17, the front of rectangle opening 15 sets
Strip perforate 16, the front of strip perforate 16 is had to be provided with rectangle opening 17, the rear end of strip perforate 16 and rectangle opening
15 connect, and the front end of strip perforate 16 is connected with rectangle opening 17, and the area of rectangle opening 15 is not less than rectangle opening 17
Area；
3rd defect ground perforate is identical with the structure of described first defect ground perforate；The structure of earth plate G2 and earth plate G1
Identical.
The present invention is the ultra wide band bandpass filter of a bandwidth 3.1～10.6GHz, and pass band insertion loss is less than 1.5dB, VSWR
Being better than 1.5, high stop band can reach 30dB in 11.8～15GHz decay, and volume only has 5mm × 3.6mm × 1.5mm.
A kind of cutting back line style LTCC ultra wide band bandpass filter of the present invention, in the logical filter of traditional cutting back tape in parallel
On ripple device architecture basics, use the line that is of coupled connections to replace singular association line, be effectively increased sideband attenuation, by single-ended short circuit also
Connection coupling line introduces two transmission zeros at sideband, and improves high-end stopband attenuation by increasing dumbbell shape DGS.This filtering
Body amass little, performance is high, method for designing science, has higher use value, can produce in batches.
A kind of cutting back line style LTCC ultra wide band bandpass filter of the present invention, uses LTCC multiple structure, it is achieved that
Stronger is broadside coupled, thus replaces the singular association line in short circuit transversal structure with broadside coupled connecting line, with less rank
Number just can reach higher stopband suppression, makes the ultra-wide band filter of design have the advantage of high-performance, miniaturization.
Claims (4)
1. a cutting back line style LTCC ultra wide band bandpass filter, it is characterised in that: include input port P1, output port P2 and
Wave filter F；
Input port P1 is located at the left side of wave filter F, and output port P2 is located at the right of wave filter F, and wave filter F top is provided with and connects
Floor G1, wave filter F are provided with earth plate G2, earth plate G1 and earth plate G2 below and are defect ground structure, the front of wave filter F
It is provided with earth plate G4, before and after wave filter F, is provided with earth plate G3；
Wave filter F include the first stub (3), the second stub (4), first be of coupled connections line (5), second be of coupled connections line
(6) set for interval the most successively with single-ended open circuit parallel coupled line (7), the first stub (3) and the second stub (4)
Putting, first line (5) and second line (6) that is of coupled connections that is of coupled connections is for being spaced setting the most successively, and first is of coupled connections line
(5) being arranged at intervals at the front of the first stub (3), second is of coupled connections before line (6) is arranged at intervals at the second stub (4)
Limit, single-ended open circuit parallel coupled line (7) is positioned at first line (5) and second that is of coupled connections and is of coupled connections the front of line (6)；
First stub (3) and the second stub (4) are serpentine structure, the first stub (3) and the second stub (4)
Rear end is all connected with earth plate G3, and the front end of the first stub (3) connects input port P1, and the front end of the second stub (4) connects
Output port P2；
First line (5) that is of coupled connections includes that upper strata is of coupled connections line (51) and lower floor is of coupled connections line (52), and upper strata is of coupled connections
Line (51) and the lower floor line (52) that is of coupled connections is serpentine structure, and the be of coupled connections left end of line (52) of lower floor connects input port
P1, the be of coupled connections left end of line (51) of upper strata is unsettled setting；
Second line (6) that is of coupled connections includes that upper strata is of coupled connections line (61) and lower floor is of coupled connections line (62), and upper strata is of coupled connections
Line (61) and the lower floor line (62) that is of coupled connections is serpentine structure, and the be of coupled connections right-hand member of line (62) of lower floor connects output port
P2, the be of coupled connections left end of line (62) of lower floor is unsettled setting, and the be of coupled connections right-hand member of line (61) of upper strata is unsettled setting；
Single-ended open circuit parallel coupled line (7) includes the single-ended open circuit in upper strata parallel coupled line (71) and lower floor single-ended open circuit parallel coupled
Line (72), the single-ended open circuit in upper strata parallel coupled line (71) and lower floor single-ended open circuit parallel coupled line (72) be serpentine structure,
The left end of upper strata is of coupled connections the right-hand member of line (51) and upper strata is of coupled connections line (61) is all connected with the single-ended open circuit in upper strata parallel coupled
The rear end of line (71), the rear end of lower floor's single-ended open circuit parallel coupled line (72) connects lower floor and is of coupled connections the right-hand member of line (52), on
The front end of single-ended open circuit parallel coupled line (71) of layer and lower floor's single-ended open circuit parallel coupled line (72) is all connected with earth plate G4.
2. a kind of cutting back line style LTCC ultra wide band bandpass filter as claimed in claim 1, it is characterised in that: described input
Mouth P1 and output port P2 is the port of 50 ohmages of coplanar waveguide structure.
3. a kind of cutting back line style LTCC ultra wide band bandpass filter as claimed in claim 1, it is characterised in that: described one is short
Transversal type LTCC ultra wide band bandpass filter is made up of multilamellar LTCC technique.
4. a kind of cutting back line style LTCC ultra wide band bandpass filter as claimed in claim 1, it is characterised in that: described earth plate
G1 includes earth plate (11), the first defect ground perforate, the second defect ground perforate and the ground perforate of the 3rd defect, opens to the first defect
Hole, the second defect ground perforate and the ground perforate of the 3rd defect are for being spaced setting the most successively；
First defect ground perforate includes rectangle opening (12), strip perforate (13) and rectangle opening (14), rectangle opening (12)
Front be provided with strip perforate (13), the front of strip perforate (13) is provided with rectangle opening (14), strip perforate (13)
Rear end be connected with rectangle opening (12), the front end of strip perforate (13) is connected with rectangle opening (14), rectangle opening (12)
Identical with the area of rectangle opening (14)；
Second defect ground perforate rectangle opening (15), strip perforate (16) and rectangle opening (17), before rectangle opening (15)
Side is provided with strip perforate (16), and the front of strip perforate (16) is provided with rectangle opening (17), after strip perforate (16)
End is connected with rectangle opening (15), and the front end of strip perforate (16) is connected with rectangle opening (17), the face of rectangle opening (15)
The long-pending area not less than rectangle opening (17)；
3rd defect ground perforate is identical with the structure of described first defect ground perforate；The structure phase of earth plate G2 and earth plate G1
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762051.7A CN106129556B (en) | 2016-08-28 | 2016-08-28 | Short-section line type LTCC ultra-wideband band-pass filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762051.7A CN106129556B (en) | 2016-08-28 | 2016-08-28 | Short-section line type LTCC ultra-wideband band-pass filter |
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| CN106129556A true CN106129556A (en) | 2016-11-16 |
| CN106129556B CN106129556B (en) | 2020-06-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950670A (en) * | 2019-02-22 | 2019-06-28 | 南京理工大学 | Both-end open circuit coupling line based on LTCC loads stub ultra-wide band 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 |
| CN114335940A (en) * | 2021-11-06 | 2022-04-12 | 南京理工大学 | Novel ultra-wideband band-pass filter based on LTCC technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950670A (en) * | 2019-02-22 | 2019-06-28 | 南京理工大学 | Both-end open circuit coupling line based on LTCC loads stub ultra-wide band filter |
| 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 |
| CN114335940A (en) * | 2021-11-06 | 2022-04-12 | 南京理工大学 | Novel ultra-wideband band-pass filter based on LTCC technology |
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| CN106129556B (en) | 2020-06-02 |
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