CN205406686U - Four -frequency area band pass filter based on multimode syntonizer - Google Patents
Four -frequency area band pass filter based on multimode syntonizer Download PDFInfo
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- CN205406686U CN205406686U CN201620152214.5U CN201620152214U CN205406686U CN 205406686 U CN205406686 U CN 205406686U CN 201620152214 U CN201620152214 U CN 201620152214U CN 205406686 U CN205406686 U CN 205406686U
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- microstrip line
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- syntonizer
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Abstract
The utility model discloses a four -frequency area band pass filter based on multimode syntonizer, including medium base plate, ground plate and syntonizer, the syntonizer comprises parallel arrangement's a style of calligraphy microstrip line and rectangle microstrip line, the both ends of rectangle microstrip line be provided with symmetrically with the L type microstrip line that a style of calligraphy microstrip line is linked together, there are incoming feeder and output feeder in the both ends of style of calligraphy microstrip line coupling respectively, incoming feeder and output all be provided with on the feeder with the minor matters of a style of calligraphy microstrip line phase coupling, the ground plate with the coupling position of syntonizer is corresponding is provided with rectangle defect ground. The utility model discloses the multiband characteristic is realized to the multimode syntonizer of the many parallelly connected routes of wave filter utilization, and the design size of further reducing the wave filter reduces the cost of manufacture, and is functional.
Description
Technical field
This utility model relates to the design field of microwave and millimetric wave device, specifically, relates to a kind of miniaturization four band band-pass filter based on multimode resonator.
Background technology
The development of wireless communication technology, has higher requirement to the miniaturization of microwave device.Microwave filter is as one of Primary Component in modern microwave device, and Main Function is to suppress signal frequency not, makes the signal frequency of needs pass through.Microwave filter is widely used, and all plays vital effect from mobile communication, global location, test instrumentation to systems such as radar navigation, electronic countermeasure, missile guidances, the overall performance of influential system to a great extent.The characteristic of the selection of ripple device, and the size reducing them becomes the focus of now research.
In recent years, for reducing system bulk, multiple frequency band system is used widely, and multiband filter also increasingly comes into one's own.But, when three or more passbands, owing to each passband needs at least two transmission zero, generally adopt the mode of several resonators coupling to produce passband, make the volume of wave filter increase.Reduce the volume of multiband filter, be increasingly becoming the focus of research.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, a kind of four band band-pass filters based on multimode resonator are provided, this wave filter utilizes the multimode resonator of multi-parallel path to realize multi-band, reduce the design size of wave filter further, reduce cost of manufacture, functional.
The purpose of this utility model is achieved through the following technical solutions:
Four band band-pass filters based on multimode resonator, including medium substrate, earth plate resonator, described resonator is made up of the yi word pattern microstrip line be arrangeding in parallel and rectangular microstrip line, the two ends of described rectangular microstrip line are provided with the L-type microstrip line being connected with described yi word pattern microstrip line relatively symmetrically, the two ends of described yi word pattern microstrip line are coupled with incoming feeder and output feeder respectively, and described incoming feeder and output feeder are provided with the minor matters being coupled with described yi word pattern microstrip line；What described earth plate was corresponding with the coupling position of described resonator is provided with rectangle defect ground.
The dielectric constant of described medium substrate is 2.2, and tangent angle loss is 0.0009, and thickness is 0.508mm.
The length of described yi word pattern microstrip line and width respectively 52mm and 0.5mm；The girth of described rectangular microstrip line is 26mm, and width is 1mm.
The length of described L-type microstrip line and width respectively 13mm and 1mm.
The length on described rectangle defect ground and width respectively 5mm and 1.5mm.
Compared with prior art, the technical solution of the utility model is had the benefit that
1. in this utility model, the specification of the various microstrip lines of resonator is certain, can pass through to change the position of its input point and output point on this basis, form multiple passband；In order to reduce the volume of wave filter, also this multimode resonator can be folded, make this utility model four band band-pass filter have size little, interband loss is big, the performances such as pass band damping is little, efficiently solve traditional four band band-pass filter manufactured sizes big, the defect that cost is high.
2., by controlling structural parameters of the present utility model, the high-performance multiband microwave filter meeting different demands can be obtained.
3. the transmission zero between passband adds interband loss, input/output port the extra transmission zero produced is that wave filter improves the suppression to high frequency region.
4. what earth plate was corresponding with the coupling position of described resonator is provided with rectangle defect ground, contributes to strengthening coupling, reduces pass-band loss.
5., by regulating the length of transmission line of incoming feeder and output feeder, extra transmission zero can be produced outside band, improve wave filter band external characteristics.
Accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present utility model.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the structural representation on defect ground.
Fig. 4 is the structural representation of this utility model specific embodiment.
Fig. 5 is the relative position relation schematic diagram of microstrip line construction in defect ground resonator in earth plate.
Fig. 6 is the transmission characteristic of this utility model specific embodiment and return loss emulation and test curve figure.
Accompanying drawing labelling: 1-earth plate 2-medium substrate 3-resonator 4-yi word pattern microstrip line 5-rectangular microstrip line 6-L type microstrip line 7-incoming feeder 8-output feeder 9-minor matters 10-rectangle defect ground
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model will be further described:
As shown in Figure 1 to Figure 3, four band band-pass filters based on multimode resonator, including earth plate 1, medium substrate 2 resonator 3, resonator 3 is made up of the yi word pattern microstrip line 4 be arrangeding in parallel and rectangular microstrip line 5, the two ends of rectangular microstrip line 5 are provided with the L-type microstrip line 6 being connected with described yi word pattern microstrip line 4 relatively symmetrically, the two ends of yi word pattern microstrip line 4 are coupled with incoming feeder 7 and output feeder 8 respectively, incoming feeder 7 and be provided with the minor matters 9 being coupled with yi word pattern microstrip line 4 on output feeder 8；What earth plate 1 was corresponding with the coupling position of described resonator is provided with rectangle defect ground 10.
Best, in this example, medium substrate 2 selects dielectric constant to be 2.2, and tangent angle loss is 0.0009, and thickness is the RogersRT/duroid5880 (tm) of 0.508mm.
Best, this utility model is bilateral symmetry, and rectangle defect ground 10 is in the underface of incoming feeder 7, output feeder 8 and resonator 3 coupling unit, and length is 1/2nd of coupling line.
Best, concrete size of the present utility model is as follows: the length of yi word pattern microstrip line 4 and width respectively 52mm and 0.5mm；The girth of rectangular microstrip line 5 is 26mm, and width is 1mm；The length of L-type microstrip line 6 and width respectively 13mm and 1mm；The live width of incoming feeder 7 and output feeder 8 is 1.2mm, and the live width of minor matters 9 is 0.2mm；The length on rectangle defect ground 10 is 5mm, wide for 1.5mm.
Fig. 4 is one of embodiment of the present utility model, produces required four frequency band by resonator 3, and its concrete scheme is as follows:
Basis of the present utility model is multimode resonator structure, as it is shown in figure 1, by regulating the size of each several part microstrip line in resonator, thus it is possible to vary the position of its transmission zero and transmission pole, form multiple passband.In order to reduce the volume of wave filter, this resonator is folded, resonator structure after folding is as shown in Figure 4, input port and output port are coupled with resonator by incoming feeder and output feeder, by regulating the length of incoming feeder and output feeder, extra transmission zero can be produced outside band, improve wave filter band external characteristics.Arranging the rectangle defect ground structure corresponding with the coupling position of resonator on earth plate, contribute to strengthening coupling, reduce pass-band loss, in defect ground resonator, the relative position relation of microstrip line construction is as shown in Figure 5.In this embodiment, long coupling line (outside minor matters) is long is 15mm, and short coupling line (inner side minor matters) is long for 12mm.
Based on the transmission characteristic of four band filters of multimode resonator coupled structure and test curve figure as shown in Figure 6, as seen from the figure, this wave filter creates four passbands, and mid frequency is 1.8GHz respectively, 3.5GHz, 5.8GHz and 7GHz.Transmission zero between passband adds interband loss, input/output port the extra transmission zero produced is that wave filter improves the suppression to high frequency region.
In sum, four band filters of the present utility model are the transmission pole produced by single multimode resonator and transmission zero forms passband.Four band band-pass filters realized by this single multimode resonator are conducive to miniaturization, meet the needs of modern microwave system.
Although the foregoing describing detailed description of the invention of the present utility model, but these being merely illustrative of, this utility model protection domain is defined by the appended claims.Those skilled in the art are under the premise without departing substantially from principle of the present utility model and essence, it is possible to these embodiments are modified or changed, but these modifications and changes both fall within protection domain of the present utility model.
Claims (5)
1. based on four band band-pass filters of multimode resonator, including medium substrate, earth plate resonator, it is characterized in that, described resonator is made up of the yi word pattern microstrip line be arrangeding in parallel and rectangular microstrip line, the two ends of described rectangular microstrip line are provided with the L-type microstrip line being connected with described yi word pattern microstrip line relatively symmetrically, the two ends of described yi word pattern microstrip line are coupled with incoming feeder and output feeder respectively, and described incoming feeder and output feeder are provided with the minor matters being coupled with described yi word pattern microstrip line；Corresponding with the coupling position of described resonator on described earth plate it is provided with rectangle defect ground.
2. four band band-pass filters based on multimode resonator according to claim 1, it is characterised in that the dielectric constant of described medium substrate is 2.2, and tangent angle loss is 0.0009, and thickness is 0.508mm.
3. four band band-pass filters based on multimode resonator according to claim 1, it is characterised in that the length of described yi word pattern microstrip line and width respectively 52mm and 0.5mm；The girth of described rectangular microstrip line is 26mm, and width is 1mm.
4. four band band-pass filters based on multimode resonator according to claim 1, it is characterised in that the length of described L-type microstrip line and width respectively 13mm and 1mm.
5. four band band-pass filters based on multimode resonator according to claim 1, it is characterised in that the length on described rectangle defect ground and width respectively 5mm and 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620152214.5U CN205406686U (en) | 2016-02-29 | 2016-02-29 | Four -frequency area band pass filter based on multimode syntonizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620152214.5U CN205406686U (en) | 2016-02-29 | 2016-02-29 | Four -frequency area band pass filter based on multimode syntonizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742770A (en) * | 2016-02-29 | 2016-07-06 | 天津大学 | Four-band band-pass filter based on multi-mode resonator |
| CN109884087A (en) * | 2019-04-22 | 2019-06-14 | 哈尔滨工业大学 | Based on the band-like MoO of two dimension3The highly sensitive microwave humidity sensor of nano material |
| CN115189108A (en) * | 2022-08-08 | 2022-10-14 | 河南科技大学 | Double-passband filter based on multimode resonator |
-
2016
- 2016-02-29 CN CN201620152214.5U patent/CN205406686U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742770A (en) * | 2016-02-29 | 2016-07-06 | 天津大学 | Four-band band-pass filter based on multi-mode resonator |
| CN109884087A (en) * | 2019-04-22 | 2019-06-14 | 哈尔滨工业大学 | Based on the band-like MoO of two dimension3The highly sensitive microwave humidity sensor of nano material |
| CN109884087B (en) * | 2019-04-22 | 2021-07-13 | 哈尔滨工业大学 | Based on two-dimensional banded MoO3High-sensitivity microwave humidity sensor made of nano material |
| CN115189108A (en) * | 2022-08-08 | 2022-10-14 | 河南科技大学 | Double-passband filter based on multimode resonator |
| CN115189108B (en) * | 2022-08-08 | 2023-10-20 | 河南科技大学 | Double-passband filter based on multimode resonator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170229 |