CN108539338A - A kind of a quarter mould substrate integral wave guide filter based on notching construction - Google Patents
A kind of a quarter mould substrate integral wave guide filter based on notching construction Download PDFInfo
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- CN108539338A CN108539338A CN201810488453.1A CN201810488453A CN108539338A CN 108539338 A CN108539338 A CN 108539338A CN 201810488453 A CN201810488453 A CN 201810488453A CN 108539338 A CN108539338 A CN 108539338A
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- guide
- mould substrate
- quarter mould
- metal layer
- quarter
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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
- H01P1/207—Hollow waveguide filters
- H01P1/209—Hollow waveguide filters comprising one or more branching arms or cavities wholly outside the main waveguide
-
- 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
- H01P1/207—Hollow waveguide filters
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Abstract
The invention discloses a kind of a quarter mould substrate integral wave guide filter based on notching construction, including a quarter mould substrate integration wave-guide arc-shaped cavity, a quarter mould substrate integration wave-guide arc-shaped cavity is divided to obtain by substrate integration wave-guide circular cavity along arbitrary two orthogonal magnetic walls, a quarter mould substrate integration wave-guide arc-shaped cavity includes dielectric substrate, the upper surface of dielectric substrate is equipped with upper metal layer, the lower surface of dielectric substrate is equipped with lower metal layer, circumferential direction in dielectric substrate along a quarter mould substrate integration wave-guide arc-shaped cavity is evenly distributed with the metal throuth hole through upper metal layer and lower metal layer.The present invention effectively realizes miniaturization relative to traditional substrate integration wave-guide circular cavity.Also, relative to traditional multilayered structure, the configuration of the present invention is simple is easy to process.In addition, relative to traditional microstrip structure, filter quality factor of the invention are high, and loss is small.
Description
Technical field
The present invention relates to microwave passive component fields, more particularly to a kind of a quarter mould substrate based on notching construction
Integral wave guide filter.
Background technology
High speed development with modern wireless communication systems and ripe day by day, the filter as its important component
Cause extensive concern and research.In traditional low frequency designs, the size of microstrip structure filter is larger, quality factor compared with
It is low.In millimeter wave frequency band, the problems such as that there is insertion loss is larger for the passive device of microstrip structure, processing difficulties；Though in addition,
So traditional metal waveguide structure loss is relatively low, but there is complicated, difficult design, size it is larger and can not planar set
At the problems such as.Therefore, substrate integrated waveguide technology has the advantage that the extensive concern for causing people in microwave and millimeter wave frequency range.
Substrate integrated waveguide technology is the low insertion loss, high quality factor, high power capacity occurred for over ten years recently
A kind of novel waveguide device, based on the techniques such as PCB and LTCC realize various substrate integration wave-guides it is passive and active simultaneous
Have the advantages that conventional metals waveguide and planar circuit, and production cost and design complexities have nothing in microwave and millimeter wave frequency range
Analogous advantage.Traditional substrate integrated wave-guide cavity wave has prodigious size compared with low-frequency range, using a quarter mould base
Piece integrated wave guide structure can effectively reduce area so that circuit design is closely.
Cause the 5G microwave and millimeter wave communication systems of extensive concern, especially large-scale mimo system, microwave milli at present
More stringent requirements are proposed to the loss of circuit, size and machining accuracy for metric wave front-end module.Therefore, it minimizes, wide bandwidth,
Highly selective device or module becomes important research hotspot.However, filter in the prior art is in miniaturization, width
Bandwidth and highly selective aspect are made ideal not enough.
Invention content
Goal of the invention：The object of the present invention is to provide a kind of a quarters based on notching construction that can realize miniaturization
Mould substrate integral wave guide filter.
Technical solution：To reach this purpose, the present invention uses following technical scheme：
A quarter mould substrate integral wave guide filter of the present invention based on notching construction, including a quarter mould
Substrate integration wave-guide arc-shaped cavity, a quarter mould substrate integration wave-guide arc-shaped cavity is by substrate integration wave-guide circular cavity along arbitrary two
The orthogonal magnetic wall of item is divided to obtain, and a quarter mould substrate integration wave-guide arc-shaped cavity includes dielectric substrate, dielectric substrate
Upper surface is equipped with upper metal layer, and the lower surface of dielectric substrate is equipped with lower metal layer, along a quarter mould substrate collection in dielectric substrate
The metal throuth hole through upper metal layer and lower metal layer is evenly distributed at the circumferential direction of waveguide arc-shaped cavity.
Further, the upper metal layer is etched with C-channel line.It is integrated in a quarter mould substrate using fluting load in this way
The surface of waveguide arc-shaped cavity has additionally introduced a resonance point, with the original two higher mode structures of a quarter mould circular cavity
At the bandpass filter of three mode, bandwidth has been widened.
Further, the C-channel line includes the segmental arc that radian is 90 °, and one end of segmental arc is equipped with first straight line section, arc
The other end of shape section is equipped with second straight line section, and arcuately the radial of section is arranged by first straight line section and second straight line Duan Jun.
Further, it is additionally provided with through upper metal layer and lower metal layer in a quarter mould substrate integration wave-guide arc-shaped cavity
Disturbance hole.Parasitic passband can effectively be inhibited in this way, realized highly selective.
Further, the disturbance hole is located on the symmetry axis of a quarter mould substrate integration wave-guide arc-shaped cavity.
Further, a quarter mould substrate integration wave-guide arc-shaped cavity includes an arc-shaped side and two right-angle sides,
In, the first right-angle side is equipped with input microstrip line, and the second right-angle side is equipped with output microstrip line.
Further, the input microstrip line and output microstrip line are 50 ohm.
Advantageous effect：The invention discloses a kind of a quarter mould substrate integral wave guide filter based on notching construction,
The size that 75% is reduced relative to traditional substrate integration wave-guide circular cavity, effectively realizes miniaturization.Also, relative to biography
The multilayered structure of system, the present invention are not necessarily to multilayered structure, only can be realized by common PCB technology, simple in structure, processing side
Just.In addition, relative to traditional microstrip structure, filter quality factor of the invention are high, and loss is small.
Description of the drawings
Fig. 1 is the structure chart of substrate integration wave-guide circular cavity in the specific embodiment of the invention；
Fig. 2 is the structure chart of a quarter mould substrate integration wave-guide arc-shaped cavity in the specific embodiment of the invention；
Fig. 3 is the structure chart of specific embodiment of the invention median filter；
Fig. 4 is the frequency response curve of specific embodiment of the invention median filter.
Specific implementation mode
Technical scheme of the present invention is further introduced with attached drawing With reference to embodiment.
Present embodiment discloses a kind of a quarter mould substrate integral wave guide filter based on notching construction, packet
A quarter mould substrate integration wave-guide arc-shaped cavity 3 is included, a quarter mould substrate integration wave-guide arc-shaped cavity 3 passes through substrate integration wave-guide
Circular cavity 1 is divided to obtain along arbitrary two orthogonal magnetic walls, and as depicted in figs. 1 and 2, Fig. 1 is that substrate integration wave-guide is round
Chamber 1, is provided with metal throuth hole 2, and Fig. 2 is a quarter mould substrate integration wave-guide arc-shaped cavity 3 obtained after dividing.A quarter
Mould substrate integration wave-guide arc-shaped cavity 3 includes dielectric substrate, and the upper surface of dielectric substrate is equipped with upper metal layer, the following table of dielectric substrate
Face is equipped with lower metal layer, is evenly distributed in dielectric substrate and runs through along the circumferential direction of a quarter mould substrate integration wave-guide arc-shaped cavity 3
The metal throuth hole 4 of upper metal layer and lower metal layer.A quarter mould substrate integration wave-guide arc-shaped cavity 3 includes an arc-shaped side and two
A right-angle side, as shown in Figure 3, wherein the first right-angle side is equipped with input microstrip line 7, and the second right-angle side is equipped with output microstrip line 8.
It is 50 ohm to input microstrip line 7 and output microstrip line 8.It is input port 5,8 end of output microstrip line to input 7 end of microstrip line
For output port 6.
Upper metal layer is etched with C-channel line 10.As shown in figure 3, C-channel line 10 includes the segmental arc 101 that radian is 90 °,
One end of segmental arc 101 is equipped with first straight line section 102, and the other end of segmental arc 101 is equipped with second straight line section 103, first straight line
Section 102 and the arcuately radial setting of section 101 of second straight line section 103.
As shown in figure 3, being additionally provided with through upper metal layer and lower metal layer in a quarter mould substrate integration wave-guide arc-shaped cavity 3
Disturbance hole 9.Disturbance hole 9 is located on the symmetry axis of a quarter mould substrate integration wave-guide arc-shaped cavity 3.
The relative dielectric constant of dielectric substrate is 10.2, dielectric thickness 1.27mm.The general plane size of filter is
18mm*18mm。
In present embodiment, by 5 input signal of input port, C-channel line is loaded with from the input input of microstrip line 7
10 and disturbance hole 9 a quarter mould substrate integration wave-guide arc-shaped cavity 3, it is filtered after signal transmission to output microstrip line 8,
It is exported by output port 6.
Fig. 4 is the frequency response curve of present embodiment median filter, and two of which solid line is simulation result curve,
Two dashed curves are test result curve, and the centre frequency of the filter of present embodiment is 5.83GHz, and bandwidth is
1.4GHz leads to in-band insertion loss and is better than 1.13dB, and return loss is better than 15dB in passband, and emulation and test result have good
Consistency.
Claims (7)
1. a kind of a quarter mould substrate integral wave guide filter based on notching construction, it is characterised in that：Including a quarter
Mould substrate integration wave-guide arc-shaped cavity (3), a quarter mould substrate integration wave-guide arc-shaped cavity (3) pass through substrate integration wave-guide circular cavity
(1) divide to obtain along arbitrary two orthogonal magnetic walls, a quarter mould substrate integration wave-guide arc-shaped cavity (3) includes medium base
Piece, the upper surface of dielectric substrate are equipped with upper metal layer, and the lower surface of dielectric substrate is equipped with lower metal layer, along four points in dielectric substrate
One of the circumferential direction of mould substrate integration wave-guide arc-shaped cavity (3) be evenly distributed with the metal throuth hole through upper metal layer and lower metal layer
(4)。
2. a quarter mould substrate integral wave guide filter according to claim 1 based on notching construction, feature exist
In：The upper metal layer is etched with C-channel line (10).
3. a quarter mould substrate integral wave guide filter according to claim 2 based on notching construction, feature exist
In：The C-channel line (10) includes the segmental arc (101) that radian is 90 °, and one end of segmental arc (101) is equipped with first straight line section
(102), the other end of segmental arc (101) is equipped with second straight line section (103), first straight line section (102) and second straight line section (103)
The arcuately radial setting of section (101).
4. a quarter mould substrate integral wave guide filter according to claim 1 based on notching construction, feature exist
In：The disturbance hole through upper metal layer and lower metal layer is additionally provided in a quarter mould substrate integration wave-guide arc-shaped cavity (3)
(9)。
5. a quarter mould substrate integral wave guide filter according to claim 4 based on notching construction, feature exist
In：Disturbance hole (9) is located on the symmetry axis of a quarter mould substrate integration wave-guide arc-shaped cavity (3).
6. a quarter mould substrate integral wave guide filter according to claim 1 based on notching construction, feature exist
In：The a quarter mould substrate integration wave-guide arc-shaped cavity (3) includes an arc-shaped side and two right-angle sides, wherein first is straight
The arm of angle is equipped with input microstrip line (7), and the second right-angle side is equipped with output microstrip line (8).
7. a quarter mould substrate integral wave guide filter according to claim 6 based on notching construction, feature exist
In：The input microstrip line (7) and output microstrip line (8) are 50 ohm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488453.1A CN108539338B (en) | 2018-05-21 | 2018-05-21 | A kind of a quarter mould substrate integral wave guide filter based on notching construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488453.1A CN108539338B (en) | 2018-05-21 | 2018-05-21 | A kind of a quarter mould substrate integral wave guide filter based on notching construction |
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| CN108539338A true CN108539338A (en) | 2018-09-14 |
| CN108539338B CN108539338B (en) | 2019-09-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301414A (en) * | 2018-09-26 | 2019-02-01 | 曲阜师范大学 | A kind of circular substrate integrated waveguide bandpass filter |
| CN110400995A (en) * | 2019-07-26 | 2019-11-01 | 南京邮电大学 | Minimize the three mould bandpass filter of HMSIW single-chamber of Wide stop bands |
| CN111157803A (en) * | 2020-01-15 | 2020-05-15 | 杭州电子科技大学 | Reconfigurable quarter-mode substrate integrated waveguide microwave microfluidic sensor |
| CN111276780A (en) * | 2020-02-10 | 2020-06-12 | 电子科技大学 | Band-pass filter based on fan-shaped microstrip resonant cavity |
| CN111276781A (en) * | 2020-03-11 | 2020-06-12 | 东南大学 | High-order mode substrate integrated waveguide circular cavity filter based on through hole disturbance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204167446U (en) * | 2014-10-30 | 2015-02-18 | 成都信息工程学院 | The integrated waveguide dual mode filter of line of rabbet joint disturbance |
| CN106785290A (en) * | 2017-01-23 | 2017-05-31 | 东南大学 | A kind of filtering power splitter based on a quarter mould substrate integration wave-guide circular cavity |
-
2018
- 2018-05-21 CN CN201810488453.1A patent/CN108539338B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204167446U (en) * | 2014-10-30 | 2015-02-18 | 成都信息工程学院 | The integrated waveguide dual mode filter of line of rabbet joint disturbance |
| CN106785290A (en) * | 2017-01-23 | 2017-05-31 | 东南大学 | A kind of filtering power splitter based on a quarter mould substrate integration wave-guide circular cavity |
Non-Patent Citations (1)
| Title |
|---|
| ABDELKHALEK NASRI ET AL.: "Design and Development of Circular Filter using QSIW Resonator", 《2017 INTERNATIONAL CONFERENCE ON ADVANCED SYSTEMS AND ELECTRIC TECHNOLOGIES (IC_ASET)》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301414A (en) * | 2018-09-26 | 2019-02-01 | 曲阜师范大学 | A kind of circular substrate integrated waveguide bandpass filter |
| CN110400995A (en) * | 2019-07-26 | 2019-11-01 | 南京邮电大学 | Minimize the three mould bandpass filter of HMSIW single-chamber of Wide stop bands |
| CN111157803A (en) * | 2020-01-15 | 2020-05-15 | 杭州电子科技大学 | Reconfigurable quarter-mode substrate integrated waveguide microwave microfluidic sensor |
| CN111276780A (en) * | 2020-02-10 | 2020-06-12 | 电子科技大学 | Band-pass filter based on fan-shaped microstrip resonant cavity |
| CN111276780B (en) * | 2020-02-10 | 2021-08-03 | 电子科技大学 | Band-pass filter based on fan-shaped microstrip resonant cavity |
| CN111276781A (en) * | 2020-03-11 | 2020-06-12 | 东南大学 | High-order mode substrate integrated waveguide circular cavity filter based on through hole disturbance |
| CN111276781B (en) * | 2020-03-11 | 2021-09-07 | 东南大学 | High-order mode substrate integrated waveguide circular cavity filter based on through hole disturbance |
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| CN108539338B (en) | 2019-09-10 |
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