CN204361225U - Nested type double square split ring band pass filter - Google Patents
Nested type double square split ring band pass filter Download PDFInfo
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- CN204361225U CN204361225U CN201520086862.0U CN201520086862U CN204361225U CN 204361225 U CN204361225 U CN 204361225U CN 201520086862 U CN201520086862 U CN 201520086862U CN 204361225 U CN204361225 U CN 204361225U
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Abstract
The utility model discloses a kind of nested type double square split ring band pass filter.It comprises substrate, input transmission line, output transmission line, open rectangle ring microstrip line, open rectangle ring microstrip line, upper right rectangular microstrip line, upper left rectangular microstrip line, lower-left longitudinal moment shaped microstrip line, bottom right longitudinal moment shaped microstrip line, right side rectangle connecting line, intermediate rectangular connecting line, the connection of left side rectangle, metal ground plate, wherein metal ground plate is provided with open rectangle ring fluting, and open rectangle ring fluting is positioned at the geometric center place of metal ground plate.It is good that the utility model has filtering performance, and insertion loss is low, and structure is simple, and size is little, easy to make, is convenient to the advantages such as integrated.
Description
Technical field
The utility model relates to filter, particularly relates to a kind of nested type double square split ring band pass filter.
Background technology
Current, wireless communication technology high speed development, the scope of business constantly expands, and the demand of people to wireless product increases rapidly, and filter just plays important role in these product circuits, and obtains continuous progress along with the development of the communication technology.New communication system requirements development is a kind of can extract and the new technology of detecting signal in specific frequency band, and the development of this new technology accelerates the research and development of wave filter technology further.
Due in departments such as communication, radar, microwaves, multi-frequency working is more and more general, also correspondingly improves, so need with a large amount of filters to the requirement of crossover frequency.Microstrip bandpass filter, can the interference of effective inhibition zone external signal as the one of filter, ensures effective transmission of inband signaling, so have a wide range of applications in mobile communications.
Summary of the invention
The utility model provides a kind of nested type double square split ring band pass filter, and technical scheme is as follows:
Nested type double square split ring band pass filter comprises substrate, input transmission line, output transmission line, open rectangle ring microstrip line, open rectangle ring microstrip line, upper right rectangular microstrip line, upper left rectangular microstrip line, lower-left longitudinal moment shaped microstrip line, bottom right longitudinal moment shaped microstrip line, right side rectangle connecting line, intermediate rectangular connecting line, the connection of left side rectangle, metal ground plate, the upper surface of substrate is provided with input transmission line, export transmission line, open rectangle ring microstrip line, open rectangle ring microstrip line, upper right rectangular microstrip line, upper left rectangular microstrip line, lower-left longitudinal moment shaped microstrip line, bottom right longitudinal moment shaped microstrip line, right side rectangle connecting line, intermediate rectangular connecting line, left side rectangle connecting line, the right-hand member of input transmission line is connected with the left end of open rectangle ring microstrip line, open rectangle ring microstrip line is positioned at inside open rectangle ring microstrip line, the left end of left side rectangle connecting line is connected with the left end of open rectangle ring microstrip line, the right-hand member of left side rectangle connecting line is connected with the right-hand member of open rectangle ring microstrip line, the lower end of lower-left longitudinal moment shaped microstrip line is connected with the left end of open rectangle ring microstrip line opening, the lower end of upper left rectangular microstrip line is connected with the upper end of lower-left longitudinal moment shaped microstrip line, the lower end of bottom right longitudinal moment shaped microstrip line is connected with the right-hand member of open rectangle ring microstrip line opening, the lower end of upper right rectangular microstrip line is connected with the upper end of bottom right longitudinal moment shaped microstrip line, the right-hand member of right side rectangle connecting line is connected with the right-hand member of open rectangle ring microstrip line, the left end of right side rectangle connecting line is connected with the right-hand member of open rectangle ring microstrip line, the two ends up and down of intermediate rectangular connecting line are connected with open rectangle ring microstrip line and open rectangle ring microstrip line respectively, the lower surface of substrate is provided with metal ground plate, metal ground plate is provided with open rectangle ring fluting, open rectangle ring fluting is positioned at the geometric center place of metal ground plate.
Described substrate is glass-epoxy material, and the length of substrate is 30mm ~ 32mm, and width is 20mm ~ 22mm.Described input transmission line is identical with the shape size exporting transmission line, and length is 6.8mm ~ 7.8mm, and width is 1.2mm ~ 1.8mm.Described open rectangle ring microstrip line is formed at bottom fluting by a straight-flanked ring microstrip line, and the total length of straight-flanked ring microstrip line is 16.5mm ~ 17.5mm, and overall width is 12mm ~ 14mm, and the width of ring is 1mm ~ 2mm, and slotting length is 0.5mm ~ 0.8mm.Described open rectangle ring microstrip line is formed at bottom fluting by a straight-flanked ring microstrip line, and the total length of straight-flanked ring microstrip line is 12mm ~ 14mm, and overall width is 9mm ~ 12mm, and the width of ring is 1.5mm ~ 2.5mm, and slotting length is 1mm ~ 2mm.Described upper right rectangular microstrip line is identical with the shape size of upper left rectangular microstrip line, and length is 2.5mm ~ 3.5mm, and width is 2.2mm ~ 2.5mm.Described lower-left longitudinal moment shaped microstrip line is identical with the shape size of bottom right longitudinal moment shaped microstrip line, and length is 2.5mm ~ 3mm, and width is 0.8mm ~ 1mm.Described right side rectangle connecting line is identical with the shape size of left side rectangle connecting line, and length is 1.2mm ~ 1.5mm, and width is 0.5mm ~ 0.8mm.The length of described intermediate rectangular connecting line is 0.75mm ~ 1mm, and width is 0.5mm ~ 0.8mm.Described open rectangle ring fluting is formed at bottom fluting by a straight-flanked ring, and the total length of straight-flanked ring is 10mm ~ 12mm, and overall width is 6mm ~ 8mm, and the width of ring is 0.8mm ~ 1mm, and slotting length is 2mm ~ 2.5mm.
It is good that the utility model has filtering performance, and insertion loss is low, and structure is simple, and size is little, easy to make, is convenient to the advantages such as integrated.
Accompanying drawing explanation
Fig. 1 is the Facad structure figure of nested type double square split ring band pass filter;
Fig. 2 is the structure figure of nested type double square split ring band pass filter;
Fig. 3 is the performance chart of nested type double square split ring band pass filter;
Fig. 4 is the front-side current distribution map of filter at 7.45GHz;
Fig. 5 is the back side current distributing figure of filter at 7.45GHz.
Embodiment
As shown in Fig. 1 ~ 2, nested type double square split ring band pass filter comprises substrate 1, input transmission line 2, output transmission line 3, open rectangle ring microstrip line 4, open rectangle ring microstrip line 5, upper right rectangular microstrip line 6, upper left rectangular microstrip line 7, lower-left longitudinal moment shaped microstrip line 8, bottom right longitudinal moment shaped microstrip line 9, right side rectangle connecting line 10, intermediate rectangular connecting line 11, left side rectangle connection 12, metal ground plate 13, the upper surface of substrate 1 is provided with input transmission line 2, export transmission line 3, open rectangle ring microstrip line 4, open rectangle ring microstrip line 5, upper right rectangular microstrip line 6, upper left rectangular microstrip line 7, lower-left longitudinal moment shaped microstrip line 8, bottom right longitudinal moment shaped microstrip line 9, right side rectangle connecting line 10, intermediate rectangular connecting line 11, left side rectangle connecting line 12, the right-hand member of input transmission line 2 is connected with the left end of open rectangle ring microstrip line 4, open rectangle ring microstrip line 5 is positioned at inside open rectangle ring microstrip line 4, the left end of left side rectangle connecting line 12 is connected with the left end of open rectangle ring microstrip line 4, the right-hand member of left side rectangle connecting line 12 is connected with the right-hand member of open rectangle ring microstrip line 5, the lower end of lower-left longitudinal moment shaped microstrip line 8 is connected with the left end of open rectangle ring microstrip line 5 opening, the lower end of upper left rectangular microstrip line 7 is connected with the upper end of lower-left longitudinal moment shaped microstrip line 8, the lower end of bottom right longitudinal moment shaped microstrip line 9 is connected with the right-hand member of open rectangle ring microstrip line 5 opening, the lower end of upper right rectangular microstrip line 6 is connected with the upper end of bottom right longitudinal moment shaped microstrip line 9, the right-hand member of right side rectangle connecting line 10 is connected with the right-hand member of open rectangle ring microstrip line 4, the left end of right side rectangle connecting line 10 is connected with the right-hand member of open rectangle ring microstrip line 5, the two ends up and down of intermediate rectangular connecting line 11 are connected with open rectangle ring microstrip line 4 and open rectangle ring microstrip line 5 respectively, the lower surface of substrate 1 is provided with metal ground plate 13, metal ground plate 13 is provided with open rectangle ring fluting 14, open rectangle ring fluting 14 is positioned at the geometric center place of metal ground plate 13.
Described substrate 1 is glass-epoxy material, and the length of substrate 1 is 30mm ~ 32mm, and width is 20mm ~ 22mm.Described input transmission line 2 is identical with the shape size exporting transmission line 3, and length is 6.8mm ~ 7.8mm, and width is 1.2mm ~ 1.8mm.Described open rectangle ring microstrip line 4 is formed at bottom fluting by a straight-flanked ring, and the total length of straight-flanked ring microstrip line is 16.5mm ~ 17.5mm, and overall width is 12mm ~ 14mm, and the width of ring is 1mm ~ 2mm, and slotting length is 0.5mm ~ 0.8mm.Described open rectangle ring microstrip line 5 is formed at bottom fluting by a straight-flanked ring microstrip line, and the total length of straight-flanked ring microstrip line is 12mm ~ 14mm, and overall width is 9mm ~ 12mm, and the width of ring is 1.5mm ~ 2.5mm, and slotting length is 1mm ~ 2mm.Described upper right rectangular microstrip line 6 is identical with the shape size of upper left rectangular microstrip line 7, and length is 2.5mm ~ 3.5mm, and width is 2.2mm ~ 2.5mm.Described lower-left longitudinal moment shaped microstrip line 8 is identical with the shape size of bottom right longitudinal moment shaped microstrip line 9, and length is 2.5mm ~ 3mm, and width is 0.8mm ~ 1mm.Described right side rectangle connecting line 10 is identical with the shape size of left side rectangle connecting line 12, and length is 1.2mm ~ 1.5mm, and width is 0.5mm ~ 0.8mm.The length of described intermediate rectangular connecting line 11 is 0.75mm ~ 1mm, and width is 0.5mm ~ 0.8mm.Described open rectangle ring fluting 14 is formed at bottom fluting by a straight-flanked ring, and the total length of straight-flanked ring is 10mm ~ 12mm, and overall width is 6mm ~ 8mm, and the width of ring is 0.8mm ~ 1mm, and slotting length is 2mm ~ 2.5mm.。
Embodiment 1
Nested type double square split ring band pass filter:
Select dielectric constant be 4.4 glass-epoxy material make micro-belt substrate, thickness is 0.8mm.The length of substrate is 30mm, and width is 20mm.Input transmission line is identical with the shape size exporting transmission line, and length is 6.8mm, and width is 1.2mm.Open rectangle ring microstrip line is formed at bottom fluting by a straight-flanked ring microstrip line, and the total length of straight-flanked ring microstrip line is 16.5mm, and overall width is 12mm, and the width of ring is 1mm, and slotting length is 0.5mm.Open rectangle ring microstrip line is formed at bottom fluting by a straight-flanked ring microstrip line, and the total length of straight-flanked ring microstrip line is 12mm, and overall width is 9mm, and the width of ring is 1.5mm, and slotting length is 1mm.Upper right rectangular microstrip line is identical with the shape size of upper left rectangular microstrip line, and length is 2.5mm, and width is 2.2mm.Lower-left longitudinal moment shaped microstrip line is identical with the shape size of bottom right longitudinal moment shaped microstrip line, and length is 2.5mm, and width is 0.8mm.Right side rectangle connecting line is identical with the shape size of left side rectangle connecting line, and length is 1.2mm, and width is 0.5mm.The length of intermediate rectangular connecting line is 0.75mm, and width is 0.5mm.Open rectangle ring fluting is formed at bottom fluting by a straight-flanked ring, and the total length of straight-flanked ring is 10mm, and overall width is 6mm, and the width of ring is 0.8mm, and slotting length is 2mm.The property indices of nested type double square split ring band pass filter adopts CST software to test, and the performance curve of gained filter as shown in Figure 3.As seen from the figure, 3dB pass band width scope is 6.896GHz ~ 7.29GHz.Within the scope of these pass band widths, insertion loss is little, and return loss is large, and this illustrates that filter has excellent bandpass filtering performance.
Claims (10)
1. a nested type double square split ring band pass filter, is characterized in that comprising substrate (1), input transmission line (2), output transmission line (3), open rectangle ring microstrip line (4), open rectangle ring microstrip line (5), upper right rectangular microstrip line (6), upper left rectangular microstrip line (7), lower-left longitudinal moment shaped microstrip line (8), bottom right longitudinal moment shaped microstrip line (9), right side rectangle connecting line (10), intermediate rectangular connecting line (11), the connection of left side rectangle (12), metal ground plate (13), the upper surface of substrate (1) is provided with input transmission line (2), export transmission line (3), open rectangle ring microstrip line (4), open rectangle ring microstrip line (5), upper right rectangular microstrip line (6), upper left rectangular microstrip line (7), lower-left longitudinal moment shaped microstrip line (8), bottom right longitudinal moment shaped microstrip line (9), right side rectangle connecting line (10), intermediate rectangular connecting line (11), left side rectangle connecting line (12), the right-hand member of input transmission line (2) is connected with the left end of open rectangle ring microstrip line (4), open rectangle ring microstrip line (5) is positioned at open rectangle ring microstrip line (4) inner side, the left end in left side rectangle connecting line (12) is connected with the left end of open rectangle ring microstrip line (4), the right-hand member in left side rectangle connecting line (12) is connected with the right-hand member of open rectangle ring microstrip line (5), the lower end of lower-left longitudinal moment shaped microstrip line (8) is connected with the left end of open rectangle ring microstrip line (5) opening, the lower end of upper left rectangular microstrip line (7) is connected with the upper end of lower-left longitudinal moment shaped microstrip line (8), the lower end of bottom right longitudinal moment shaped microstrip line (9) is connected with the right-hand member of open rectangle ring microstrip line (5) opening, the lower end of upper right rectangular microstrip line (6) is connected with the upper end of bottom right longitudinal moment shaped microstrip line (9), the right-hand member on right side rectangle connecting line (10) is connected with the right-hand member of open rectangle ring microstrip line (4), the left end on right side rectangle connecting line (10) is connected with the right-hand member of open rectangle ring microstrip line (5), the two ends up and down of intermediate rectangular connecting line (11) are connected with open rectangle ring microstrip line (4) and open rectangle ring microstrip line (5) respectively, the lower surface of substrate (1) is provided with metal ground plate (13), metal ground plate (13) is provided with open rectangle ring fluting (14), open rectangle ring fluting (14) is positioned at the geometric center place of metal ground plate (13).
2. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described substrate (1) is glass-epoxy material, the length of substrate (1) is 30mm ~ 32mm, and width is 20mm ~ 32mm.
3. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described input transmission line (2) is identical with the shape size exporting transmission line (3), length is 6.8mm ~ 7.8mm, and width is 1.2mm ~ 1.8mm.
4. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described open rectangle ring microstrip line (4) is formed at bottom fluting by a straight-flanked ring microstrip line, the total length of straight-flanked ring microstrip line is 16.5mm ~ 17.5mm, overall width is 12mm ~ 14mm, the width of ring is 1mm ~ 2mm, and slotting length is 0.5mm ~ 0.8mm.
5. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described open rectangle ring microstrip line (5) is formed at bottom fluting by a straight-flanked ring microstrip line, the total length of straight-flanked ring microstrip line is 12mm ~ 14mm, overall width is 9mm ~ 12mm, the width of ring is 1.5mm ~ 2.5mm, and slotting length is 1mm ~ 2mm.
6. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described upper right rectangular microstrip line (6) is identical with the shape size of upper left rectangular microstrip line (7), length is 2.5mm ~ 3.5mm, and width is 2.2mm ~ 2.5mm.
7. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described lower-left longitudinal moment shaped microstrip line (8) is identical with the shape size of bottom right longitudinal moment shaped microstrip line (9), length is 2.5mm ~ 3mm, and width is 0.8mm ~ 1mm.
8. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described right side rectangle connecting line (10) is identical with the shape size in left side rectangle connecting line (12), length is 1.2mm ~ 1.5mm, and width is 0.5mm ~ 0.8mm.
9. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that the length of described intermediate rectangular connecting line (11) is 0.75mm ~ 1mm, width is 0.5mm ~ 0.8mm.
10. a kind of nested type double square split ring band pass filter as claimed in claim 1, it is characterized in that described open rectangle ring fluting (14) is formed at bottom fluting by a straight-flanked ring, the total length of straight-flanked ring is 10mm ~ 12mm, overall width is 6mm ~ 8mm, the width of ring is 0.8mm ~ 1mm, and slotting length is 2mm ~ 2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520086862.0U CN204361225U (en) | 2015-02-06 | 2015-02-06 | Nested type double square split ring band pass filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520086862.0U CN204361225U (en) | 2015-02-06 | 2015-02-06 | Nested type double square split ring band pass filter |
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| CN204361225U true CN204361225U (en) | 2015-05-27 |
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| CN201520086862.0U Expired - Fee Related CN204361225U (en) | 2015-02-06 | 2015-02-06 | Nested type double square split ring band pass filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602200A (en) * | 2016-12-02 | 2017-04-26 | 南京理工大学 | Micro-strip power dividing filter |
| CN110265757A (en) * | 2019-07-24 | 2019-09-20 | 南京信息工程大学 | A kind of microstrip bandpass filter of WLAN frequency range |
-
2015
- 2015-02-06 CN CN201520086862.0U patent/CN204361225U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602200A (en) * | 2016-12-02 | 2017-04-26 | 南京理工大学 | Micro-strip power dividing filter |
| CN106602200B (en) * | 2016-12-02 | 2018-07-31 | 南京理工大学 | A kind of micro-strip work(filter-divider |
| CN110265757A (en) * | 2019-07-24 | 2019-09-20 | 南京信息工程大学 | A kind of microstrip bandpass filter of WLAN frequency range |
| CN110265757B (en) * | 2019-07-24 | 2023-12-19 | 南京信息工程大学 | Microstrip band-pass filter of WLAN frequency band |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20160206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |