CN203707296U - Wineglass-shaped C waveband micro-strip band-pass filter - Google Patents
Wineglass-shaped C waveband micro-strip band-pass filter Download PDFInfo
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- CN203707296U CN203707296U CN201420113719.1U CN201420113719U CN203707296U CN 203707296 U CN203707296 U CN 203707296U CN 201420113719 U CN201420113719 U CN 201420113719U CN 203707296 U CN203707296 U CN 203707296U
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Abstract
The utility model discloses a wineglass-shaped C waveband micro-strip band-pass filter.The filter comprises a substrate, an input transmission line, a left dog-legged transmission line, a left S-shaped transmission line, a left short circuit needle, a right short circuit needle, a right S-shaped transmission line, a right dog-legged transmission line, an output transmission line and a rectangular earth plate, wherein the input transmission line, the left dog-legged transmission line, the left S-shaped transmission line, the right S-shaped transmission line, the right dog-legged transmission line and the output transmission line are arranged on the upper surface of the substrate; the right end of the input transmission line is connected with the bottom end of the left dog-legged transmission line; the top end of the left S-shaped transmission line is connected with the rectangular earth plate by the left short circuit needle via the substrate; the top end of the right S-shaped transmission line is connected with the rectangular earth plate by the right short circuit needle via the substrate; the left end of the output transmission line is connected with the bottom end of the right dog-legged transmission line; and the rectangular earth plate is arranged on the lower surface of the substrate.The filter has the advantages of good filtration performance, low insertion loss, simple structure, small size, convenience in manufacturing and integration, and the like.
Description
Technical field
The utility model relates to filter, relates in particular to a kind of wine cup shape C-band microstrip bandpass filter.
Background technology
Current wireless communication technology high speed development, the scope of business constantly expands, and people increase rapidly the demand of wireless product, and filter is just being played the part of important role in these product circuits, and obtains continuous progress along with the development of the communication technology.New communication system a kind of can the extraction in specific frequency band and the new technology of detecting signal of will seeking development, and the research and development of wave filter technology has further been accelerated in the development of this new technology.
Due in departments such as communication, radar, microwaves, multi-frequency working is more and more general, the requirement of crossover frequency is also correspondingly improved, so a large amount of filter for needing.Microstrip bandpass filter is as the one of filter, and the effectively interference of inhibition zone external signal, ensures effective transmission of inband signaling, so have a wide range of applications in mobile communication.
Summary of the invention
The utility model provides a kind of wine cup shape C-band microstrip bandpass filter, and technical scheme is as follows:
Wine cup shape C-band microstrip bandpass filter comprises substrate, input transmission line, the linear transmission line of left folding, left S shape transmission line, left short circuit pin, right short circuit pin, right S shape transmission line, the linear transmission line of right folding, output transmission line, rectangle ground plate; The upper surface of substrate is provided with input transmission line, the linear transmission line of left folding, left S shape transmission line, right S shape transmission line, the linear transmission line of right folding, output transmission line, the right-hand member of input transmission line is connected with the bottom of the linear transmission line of left folding, the top of left S shape transmission line is connected with rectangle ground plate by substrate by left short circuit pin, the top of right S shape transmission line is connected with rectangle ground plate by substrate by right short circuit pin, and the left end of output transmission line is connected with the bottom of the linear transmission line of right folding; The lower surface of substrate is provided with rectangle ground plate.
Described substrate is glass-epoxy material, and the length of substrate is 18mm～22mm, and width is 18mm～22mm.Described input transmission line is identical with the shape size of output transmission line, and length is 9mm～10mm, and width is 0.5mm～2mm.The linear transmission line of described left folding is identical with the shape size of the linear transmission line of right folding, by two longitudinal rectangle transmission lines and a horizontal rectangle transmission line composition, the length of the longitudinal rectangle transmission line in top is 8mm～11mm, laterally the length of rectangle transmission line is 5mm～6mm, the length of the longitudinal rectangle transmission line in bottom is 2mm～3mm, and live width is 0.5mm～1mm.Described left S shape transmission line is identical with the shape size of right S shape transmission line, by three longitudinal rectangle transmission lines and two horizontal rectangle transmission line compositions, longitudinally the length of rectangle transmission line is 7mm～11mm, and laterally the length of rectangle transmission line is 2mm～4mm, and live width is 0.5mm～1mm.Described left short circuit pin is identical with the shape size of right short circuit pin, and diameter is 0.5mm～1.5mm, is highly 1mm～2mm.The length of described rectangle ground plate is 18mm～22mm, and width is 18mm～22mm.
The utlity model has filtering performance good, simple in structure, size is little, easy to make, is convenient to the advantages such as integrated.
Brief description of the drawings
Fig. 1 is the Facad structure figure of wine cup shape C-band microstrip bandpass filter;
Fig. 2 is the structure figure of wine cup shape C-band microstrip bandpass filter;
Fig. 3 is the construction profile of wine cup shape C-band microstrip bandpass filter;
Fig. 4 is the performance chart of wine cup shape C-band microstrip bandpass filter;
Fig. 5 is the Surface current distribution figure of filter in the time of 4.95GHz.
Embodiment
As shown in Figures 1 to 3, wine cup shape C-band microstrip bandpass filter comprises substrate 1, input transmission line 2, the linear transmission line 3 of left folding, left S shape transmission line 4, left short circuit pin 5, right short circuit pin 6, right S shape transmission line 7, the linear transmission line 8 of right folding, output transmission line 9, rectangle ground plate 10; The upper surface of substrate 1 is provided with input transmission line 2, the linear transmission line 3 of left folding, left S shape transmission line 4, right S shape transmission line 7, the linear transmission line 8 of right folding, output transmission line 9, the right-hand member of input transmission line 2 is connected with the bottom of the linear transmission line 3 of left folding, the top of left S shape transmission line 4 is connected with rectangle ground plate 10 by substrate 1 by left short circuit pin 5, the top of right S shape transmission line 7 is connected with rectangle ground plate 10 by substrate 1 by right short circuit pin 6, and the left end of output transmission line 9 is connected with the bottom of the linear transmission line 8 of right folding; The lower surface of substrate 1 is provided with rectangle ground plate 10.
Described substrate 1 is glass-epoxy material, and the length of substrate 1 is 18mm～22mm, and width is 18mm～22mm.Described input transmission line 2 is identical with the shape size of output transmission line 9, and length is 9mm～10mm, and width is 0.5mm～2mm.The linear transmission line 3 of described left folding is identical with the shape size of the linear transmission line 8 of right folding, by two longitudinal rectangle transmission lines and a horizontal rectangle transmission line composition, the length of the longitudinal rectangle transmission line in top is 8mm～11mm, laterally the length of rectangle transmission line is 5mm～6mm, the length of the longitudinal rectangle transmission line in bottom is 2mm～3mm, and live width is 0.5mm～1mm.Described left S shape transmission line 4 is identical with the shape size of right S shape transmission line 7, by three longitudinal rectangle transmission lines and two horizontal rectangle transmission line compositions, longitudinally the length of rectangle transmission line is 7mm～11mm, laterally the length of rectangle transmission line is 2mm～4mm, and live width is 0.5mm～1mm.Described left short circuit pin 5 is identical with the shape size of right short circuit pin 6, and diameter is 0.5mm～1.5mm, is highly 1mm～2mm.The length of described rectangle ground plate 10 is 18mm～22mm, and width is 18mm～22mm.
Embodiment 1
Wine cup shape C-band microstrip bandpass filter:
Select the glass-epoxy material that dielectric constant is 4.4 to make micro-belt substrate, thickness is 1mm.The length of substrate is 20mm, and width is 20mm.Input transmission line is identical with the shape size of output transmission line, and length is 9.7mm, and width is 1mm.The linear transmission line of left folding is identical with the shape size of the linear transmission line of right folding, by two longitudinal rectangle transmission lines and a horizontal rectangle transmission line composition, the length of the longitudinal rectangle transmission line in top is 9mm, laterally the length of rectangle transmission line is 5.7mm, the length of the longitudinal rectangle transmission line in bottom is 2.5mm, and live width is 0.5mm.Left S shape transmission line is identical with the shape size of right S shape transmission line, by three longitudinal rectangle transmission lines and two horizontal rectangle transmission line compositions, the outside longitudinally length of rectangle transmission line is 10mm, the length of all the other longitudinal rectangle transmission lines is 8mm, laterally the length of rectangle transmission line is 2mm, and live width is 0.5mm.Left short circuit pin is identical with the shape size of right short circuit pin, and diameter is 1.2mm, is highly 1mm.The length of rectangle ground plate is 20mm, and width is 20mm.The property indices of wine cup shape C-band microstrip bandpass filter adopts CST software to test, and the performance curve of gained filter as shown in Figure 4.As seen from the figure, 3dB pass band width scope is 4.88GHz～5.01GHz.Within the scope of these pass band widths, insertion loss is little, and return loss is large, and this explanation filter has good bandpass filtering performance.The Surface current distribution figure of filter in the time of 4.95GHz as shown in Figure 5.
Claims (7)
1. a wine cup shape C-band microstrip bandpass filter, it is characterized in that comprising substrate (1), input transmission line (2), the linear transmission line of left folding (3), left S shape transmission line (4), left short circuit pin (5), right short circuit pin (6), right S shape transmission line (7), the linear transmission line of right folding (8), output transmission line (9), rectangle ground plate (10), the upper surface of substrate (1) is provided with input transmission line (2), the linear transmission line of left folding (3), left S shape transmission line (4), right S shape transmission line (7), the linear transmission line of right folding (8), output transmission line (9), the right-hand member of input transmission line (2) is connected with the bottom of the linear transmission line of left folding (3), the top of left S shape transmission line (4) is connected with rectangle ground plate (10) by substrate (1) by left short circuit pin (5), the top of right S shape transmission line (7) is connected with rectangle ground plate (10) by substrate (1) by right short circuit pin (6), the left end of output transmission line (9) is connected with the bottom of the linear transmission line of right folding (8), the lower surface of substrate (1) is provided with rectangle ground plate (10).
2. a kind of wine cup shape C-band microstrip bandpass filter as claimed in claim 1, is characterized in that described substrate (1) is glass-epoxy material, and the length of substrate (1) is 18mm～22mm, and width is 18mm～22mm.
3. a kind of wine cup shape C-band microstrip bandpass filter as claimed in claim 1, it is characterized in that described input transmission line (2) is identical with the shape size of output transmission line (9), length is 9mm～10mm, and width is 0.5mm～2mm.
4. a kind of wine cup shape C-band microstrip bandpass filter as claimed in claim 1, it is characterized in that the described linear transmission line of left folding (3) is identical with the shape size of the linear transmission line of right folding (8), by two longitudinal rectangle transmission lines and a horizontal rectangle transmission line composition, the length of the longitudinal rectangle transmission line in top is 8mm～11mm, laterally the length of rectangle transmission line is 5mm～6mm, the length of the longitudinal rectangle transmission line in bottom is 2mm～3mm, and live width is 0.5mm～1mm.
5. a kind of wine cup shape C-band microstrip bandpass filter as claimed in claim 1, it is characterized in that described left S shape transmission line (4) is identical with the shape size of right S shape transmission line (7), by three longitudinal rectangle transmission lines and two horizontal rectangle transmission line compositions, longitudinally the length of rectangle transmission line is 7mm～11mm, laterally the length of rectangle transmission line is 2mm～4mm, and live width is 0.5mm～1mm.
6. a kind of wine cup shape C-band microstrip bandpass filter as claimed in claim 1, it is characterized in that described left short circuit pin (5) is identical with the shape size of right short circuit pin (6), diameter is 0.5mm～1.5mm, is highly 1mm～2mm.
7. a kind of wine cup shape C-band microstrip bandpass filter as claimed in claim 1, is characterized in that the length of described rectangle ground plate (10) is 18mm～22mm, and width is 18mm～22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113719.1U CN203707296U (en) | 2014-03-11 | 2014-03-11 | Wineglass-shaped C waveband micro-strip band-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113719.1U CN203707296U (en) | 2014-03-11 | 2014-03-11 | Wineglass-shaped C waveband micro-strip band-pass filter |
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| Publication Number | Publication Date |
|---|---|
| CN203707296U true CN203707296U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113719.1U Expired - Fee Related CN203707296U (en) | 2014-03-11 | 2014-03-11 | Wineglass-shaped C waveband micro-strip band-pass filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914434A (en) * | 2016-05-09 | 2016-08-31 | 南京理工大学 | Triangle three-mode band pass filter |
-
2014
- 2014-03-11 CN CN201420113719.1U patent/CN203707296U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914434A (en) * | 2016-05-09 | 2016-08-31 | 南京理工大学 | Triangle three-mode band pass filter |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20150311 |
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| EXPY | Termination of patent right or utility model |