CN110137637A - A kind of LTCC miniaturized substrate integrated waveguide filter - Google Patents
A kind of LTCC miniaturized substrate integrated waveguide filter Download PDFInfo
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- CN110137637A CN110137637A CN201910334891.7A CN201910334891A CN110137637A CN 110137637 A CN110137637 A CN 110137637A CN 201910334891 A CN201910334891 A CN 201910334891A CN 110137637 A CN110137637 A CN 110137637A
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- metal layer
- integrated waveguide
- ltcc
- substrate
- miniaturized
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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
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Abstract
The invention discloses a kind of LTCC miniaturized substrate integrated waveguide filters, the first metal layer, first medium substrate, second metal layer, second medium substrate and third metal layer including being arranged successively setting from top to bottom, the first metal layer, first medium substrate, second metal layer, second medium substrate and third metal layer are respectively equipped with corresponding metal throuth hole, the second metal layer is equipped with coupling window, and the second metal layer opens up fluted.The present invention forms miniaturized substrate integrated waveguide resonant cavity by metal layer and medium substrate, so as to effectively reduce the volume of filter.And filter of the present invention is designed using multi-layer-coupled, multiple miniaturized substrate integrated waveguide resonant cavities of formation are distributed on multilayer dielectric substrate, every layer there are two the multiple folding substrate integration wave-guide resonant cavity of higher miniaturization, areas to be equivalent to 6% or less original substrate integrated wave guide resonance cavity area.It the composite can be widely applied in microwave technical field.
Description
Technical field
The present invention relates to microwave technical field more particularly to a kind of LTCC miniaturized substrate integrated waveguide filters.
Background technique
In recent years, substrate integration wave-guide (Substrate Integrated Waveguide, SIW) due to high-quality because
Number, high power capacity, easy processing and it is at low cost the advantages that be widely used in a wireless communication system, however it still has not
Foot, i.e., its for other elements in microwave circuit, the area occupied of circuit layout is larger.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of LTCC of less size of energy to minimize base
Piece integral wave guide filter.
The technical solution used in the present invention is:
A kind of LTCC miniaturized substrate integrated waveguide filter, the first metal including being arranged successively setting from top to bottom
Layer, first medium substrate, second metal layer, second medium substrate and third metal layer, the first metal layer, first medium base
Plate, second metal layer, second medium substrate and third metal layer are respectively equipped with corresponding metal throuth hole, and the second metal layer is set
There is a coupling window, the second metal layer opens up fluted, and the first metal layer is equipped with input port, the third metal layer
Equipped with output port.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, in the institute of same level
Metal throuth hole is stated as two rows of and perpendicular type distribution setting.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, in the institute of same level
State the L-shaped distribution setting of metal throuth hole.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, in the institute of same level
State the T-shaped distribution setting of metal throuth hole.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, the groove is rectangle
Groove, and it is set to the edge of the metal throuth hole.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, the coupling window packet
Include the first coupling window, the second coupling window and third coupling window, the first coupling window and the second coupling window difference
It is correspondingly arranged in second metal layer, the centre of third coupling the window setting and second metal layer.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, first coupling window
Mouth and the second coupling window are c-type window, and the third coupling window is rectangular window.
The present invention uses another technical solution to be:
A kind of LTCC miniaturized substrate integrated waveguide filter, including 2N layers of medium substrate and 2N+1 layers of metal layer, it is described
Medium substrate and metal layer are alternately stacked from top to bottom, wherein upper and lower surfaces are metal layer, and intermediate metal layer is set
There is a coupling window, the metal layer of the centre opens up fluted, and each medium substrate and metal layer are respectively equipped with corresponding gold
Belong to through-hole, N is positive integer.
It further include being set to as a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter
Input port and output port on metal layer, the input port and output port are set on same layer metal layer or are arranged
In on the metal layer of different layers.
As a kind of further improvement of LTCC miniaturized substrate integrated waveguide filter, in the institute of same level
Metal throuth hole is stated as two rows of and perpendicular type distribution setting.
The beneficial effects of the present invention are:
A kind of LTCC miniaturized substrate integrated waveguide filter of the present invention forms miniaturization by metal layer and medium substrate
Substrate integration wave-guide resonant cavity, so as to effectively reduce the volume of filter.And filter of the present invention uses multilayer coupling
Design is closed, multiple miniaturized substrate integrated waveguide resonant cavities of formation are distributed on multilayer dielectric substrate, every layer there are two high
The multiple folding substrate integration wave-guide resonant cavity of miniaturization is spent, area is equivalent to original substrate integrated wave guide resonance cavity area
6% or less.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of LTCC miniaturized substrate integrated waveguide filter one embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of another embodiment of LTCC miniaturized substrate integrated waveguide filter of the present invention；
Fig. 3 is that a kind of structure of the metal layer of LTCC miniaturized substrate integrated waveguide filter one embodiment of the present invention is shown
It is intended to；
Fig. 4 is a kind of S parameter simulation result of LTCC miniaturized substrate integrated waveguide filter one embodiment of the present invention.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
It should be noted that unless otherwise specified, when a certain feature is referred to as " fixation ", " connection " in another feature,
It can directly fix, be connected to another feature, and can also fix, be connected to another feature indirectly.In addition, this
The descriptions such as the upper and lower, left and right used in open are only the mutual alignment pass relative to each component part of the disclosure in attached drawing
For system." one kind " of used singular, " described " and " being somebody's turn to do " are also intended to including most forms in the disclosure, remove
Non- context clearly expresses other meaning.In addition, unless otherwise defined, all technical and scientific terms used herein
It is identical as the normally understood meaning of those skilled in the art.Term used in the description is intended merely to describe herein
Specific embodiment is not intended to be limiting of the invention.Term as used herein " and/or " it include one or more relevant
The arbitrary combination of listed item.
It will be appreciated that though various elements, but this may be described using term first, second, third, etc. in the disclosure
A little elements should not necessarily be limited by these terms.These terms are only used to for same type of element being distinguished from each other out.For example, not departing from
In the case where disclosure range, first element can also be referred to as second element, and similarly, second element can also be referred to as
One element.The use of provided in this article any and all example or exemplary language (" such as ", " such as ") is intended merely to more
Illustrate the embodiment of the present invention well, and unless the context requires otherwise, otherwise the scope of the present invention will not be applied and be limited.
With reference to Fig. 1 and Fig. 3, the embodiment of the invention provides a kind of LTCC miniaturized substrate integrated waveguide filters, including
It is arranged successively the first metal layer 101, first medium substrate 102, second metal layer 103, the second medium base of setting from top to bottom
Plate 104 and third metal layer 105, the first metal layer 101, first medium substrate 102, second metal layer 103, second medium
Substrate 104 and third metal layer 105 are respectively equipped with corresponding metal throuth hole 106, and the second metal layer 103 is equipped with coupling window
107, the second metal layer 103 opens up fluted 1031, and the first metal layer 101 is equipped with input port 108, the third
Metal layer 105 is equipped with output port 109.
The first metal layer 101, first medium substrate 102, second metal layer 103, second medium substrate 104 in the present embodiment
With the metal throuth hole 106 on third metal layer 105, and each layer of combination, the semi open model structure surrounded constitutes four
Miniaturized substrate integrated waveguide resonant cavity.
Input port 108 and output port 109 described in the present embodiment are all made of microstrip line realization, are set to said metal
One end of layer is directly coupled with miniaturized substrate integrated waveguide resonant cavity by 50 Ω microstrip lines respectively, can be by adjusting micro-
The loaded Q of input and output resonant cavity is adjusted with the coupling position of line and resonant cavity.In order to use filter convenient for connection, lean on
The first medium substrate 102 and its third metal layer 105 for being closely connected with the first metal layer 101 of input port 108 prolong to one end
It stretches to support input port 108, and second layer medium substrate and its ground close to the third metal layer 105 for being connected with output end
Metal layer extends the microstrip line to support output port 109 to the other end.
It is further used as preferred embodiment, is two rows of and perpendicular type in the metal throuth hole 106 of same level
Distribution setting.
It is further used as preferred embodiment, is arranged in the L-shaped distribution of the metal throuth hole 106 of same level.When
In the 106 L-shaped distribution of metal throuth hole of same level, only one resonant cavity on the same layer.
It is further used as preferred embodiment, is arranged in the T-shaped distribution of the metal throuth hole 106 of same level.When
In the 106 T-shaped distribution of metal throuth hole of same level, there are two resonant cavities on the same layer.
It is further used as preferred embodiment, the groove 1031 is rectangular recess 1031, and is set to the metal
The edge of through-hole 106.
The groove 1031 is mainly used for the coupling by upper and lower level, realizes that resonant cavity frequency reduces, or reduce humorous
The electric size of vibration chamber.
It is further used as preferred embodiment, the coupling window 107 includes that the first coupling window 1071, second couples
Window 1072 and third couple window 1073, and the first coupling window 1071 and the second coupling window 1072 respectively correspond setting
In in second metal layer 103, the centre with second metal layer 103 is arranged in the third coupling window 1073.
It is further used as preferred embodiment, the first coupling window 1071 and the second coupling window 1072 are C
Type window, the third coupling window 1073 is rectangular window.
In the present embodiment, coupling is realized by coupling window 107 between resonant cavity, according to coupling 107 position of window
Difference is electrically coupled or magnetic coupling, according to the size of the adjustment coupling amount of different sizes of coupling window 107.Same medium base
Longitudinal arrangement has metal throuth hole 106 between two resonant cavities on plate, will between two resonant cavities on same medium substrate
The two is completely separated, so that not having coupling between two on same medium substrate resonant cavity.
In the present embodiment, using filter shown in FIG. 1, the miniaturization base of 4 rank chebyshev functions response is designed
Piece integral wave guide filter.Selecting dielectric constant is 2.2, and with a thickness of 5880 medium substrate of Rogers of 0.508mm, optimization is each
Design parameter obtains C frequency range multi-layer compact substrate integral wave guide filter simulation result as shown in figure 3, Fig. 3 is using this hair
The S parameter simulation result of the multi-layer compact substrate integral wave guide filter embodiment of bright structure, as shown in Figure 4, centre frequency
For 4.18GHz, bandwidth 940MHz, it is less than 1dB with interior Insertion Loss, with interior S11 < -16dB, four reflection zeros exist respectively
3.69GHz, 4GHz, 4.38GHz and 4.47GHz, two transmission zeros are respectively in 3.43GHz and 4.6GHz.Description of the invention
Unspecified part belongs to common sense well known to those skilled in the art.
With reference to Fig. 2, the present embodiment additionally provides a kind of LTCC miniaturized substrate integrated waveguide filter, including 2N layers of medium
Substrate 203 and 2N+1 layers of metal layer 205, the medium substrate 203 and metal layer 205 are alternately stacked from top to bottom, wherein upper table
Face and lower surface are metal layer 205, and intermediate metal layer 205 is equipped with coupling window 202, and the metal layer 205 of the centre is opened
Equipped with groove 204, each medium substrate 203 and metal layer 205 are respectively equipped with corresponding metal throuth hole 207, and N is big just whole
Number.
Metal layer 205 and medium substrate 203 in the present embodiment, and the metal throuth hole 106 on each layer is combined, it is enclosed
At semi open model structure constitute miniaturized substrate integrated waveguide resonant cavity.The groove 204 is mainly used for passing through upper and lower level
Coupling, realize resonant cavity frequency reduce, or reduce resonant cavity electric size.
Input port 201 and output port 206 described in the present embodiment are all made of microstrip line realization, are set to said metal
One end of layer is directly coupled with miniaturized substrate integrated waveguide resonant cavity by 50 Ω microstrip lines respectively, can be by adjusting micro-
The loaded Q of input and output resonant cavity is adjusted with the coupling position of line and resonant cavity.In order to use filter convenient for connection, lean on
Closely it is connected with the first layer medium substrate 203 of the metal layer 205 of the upper surface of input port 201 and the metal layer 205 of lower surface
Extend to one end to support input port 201, and the last layer medium of the metal layer close to the upper surface for being connected with output end
Substrate 203 and its metal layer of lower surface 205 extend the microstrip line to support output port 206 to the other end.
In the present embodiment, coupling is realized by coupling window 202 between resonant cavity, according to coupling 202 position of window
Difference is electrically coupled or magnetic coupling, according to the size of the adjustment coupling amount of different sizes of coupling window 202.Same medium base
Longitudinal arrangement has metal throuth hole 207 between two resonant cavities on plate 203, two resonant cavities on same medium substrate 203
Between the two is completely separated so that there is no coupling between two resonant cavities on same medium substrate 203.
It is further used as preferred embodiment, further includes having the input port 201 being set on metal layer 205 and output
Port 206, the input port 201 and output port 206 are set on same layer metal layer 205 or are set to the gold of different layers
Belong on layer 205.
It is further used as preferred embodiment, is two rows of and perpendicular type in the metal throuth hole 207 of same level
Distribution setting.
From the foregoing it can be that a kind of LTCC miniaturized substrate integrated waveguide filter of the present invention passes through metal layer and medium
Substrate forms miniaturized substrate integrated waveguide resonant cavity, so as to which the volume of filter is effectively reduced common SIW resonance
The 1/16 of cavity filter.And filter of the present invention is designed using multi-layer-coupled, and multiple Miniaturized substrates of formation are integrated wave
It leads resonant cavity to be distributed on multilayer dielectric substrate, every layer there are two the multiple folding substrate integration wave-guide resonance of higher miniaturization
Chamber, area are equivalent to 6% or less original substrate integrated wave guide resonance cavity area.Filter size of the present invention is small, integrated level
Height, superior performance.It can be realized by metal throuth hole 106 and window of various shapes magneto-electric coupled.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of LTCC miniaturized substrate integrated waveguide filter, it is characterised in that: including being arranged successively setting from top to bottom
The first metal layer, first medium substrate, second metal layer, second medium substrate and third metal layer, the first metal layer,
One medium substrate, second metal layer, second medium substrate and third metal layer are respectively equipped with corresponding metal throuth hole, and described second
Metal layer is equipped with coupling window, and the second metal layer opens up fluted, and the first metal layer is equipped with input port, and described the
Three metal layers are equipped with output port.
2. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 1, it is characterised in that: in same layer
The metal throuth hole in face is two rows of and perpendicular type distribution setting.
3. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 1, it is characterised in that: in same layer
The L-shaped distribution setting of the metal throuth hole in face.
4. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 1, it is characterised in that: in same layer
The T-shaped distribution setting of the metal throuth hole in face.
5. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 1, it is characterised in that: the groove
For rectangular recess, and it is set to the edge of the metal throuth hole.
6. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 1 is it is characterized by: the coupling
Window includes that the first coupling window, the second coupling window and third couple window, the first coupling window and the second coupling window
Mouth, which respectively corresponds, to be set in second metal layer, the centre of third coupling the window setting and second metal layer.
7. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 6, it is characterised in that: described first
Coupling window and the second coupling window is c-type window, and the third coupling window is rectangular window.
8. a kind of LTCC miniaturized substrate integrated waveguide filter, it is characterised in that: including 2N layers of medium substrate and 2N+1 layers of gold
Belong to layer, the medium substrate and metal layer are alternately stacked from top to bottom, wherein upper and lower surfaces are metal layer, intermediate
Metal layer be equipped with coupling window, the metal layer of the centre opens up fluted, and each medium substrate and metal layer are set respectively
There is corresponding metal throuth hole, N is positive integer.
9. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 8, it is characterised in that: further include having
The input port and output port being set on metal layer, the input port and output port are set on same layer metal layer
Or it is set on the metal layer of different layers.
10. a kind of LTCC miniaturized substrate integrated waveguide filter according to claim 8, it is characterised in that: same
The metal throuth hole of level is two rows of and perpendicular type distribution setting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910334891.7A CN110137637A (en) | 2019-04-24 | 2019-04-24 | A kind of LTCC miniaturized substrate integrated waveguide filter |
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| CN201910334891.7A CN110137637A (en) | 2019-04-24 | 2019-04-24 | A kind of LTCC miniaturized substrate integrated waveguide filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797614A (en) * | 2019-11-14 | 2020-02-14 | 成都频岢微电子有限公司 | Miniaturized substrate integrated waveguide filter with high-order mode suppression |
| CN113258236A (en) * | 2021-04-25 | 2021-08-13 | 杭州电子科技大学 | Mode composite transmission line based on SIW and FSIW |
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| CN109103555A (en) * | 2018-07-19 | 2018-12-28 | 杭州电子科技大学 | Triple-band filter based on SIW structure |
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| CN110797614A (en) * | 2019-11-14 | 2020-02-14 | 成都频岢微电子有限公司 | Miniaturized substrate integrated waveguide filter with high-order mode suppression |
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| CN113258236A (en) * | 2021-04-25 | 2021-08-13 | 杭州电子科技大学 | Mode composite transmission line based on SIW and FSIW |
| CN113258236B (en) * | 2021-04-25 | 2022-02-18 | 杭州电子科技大学 | Mode composite transmission line based on SIW and FSIW |
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