CN104218296B - A kind of waveguide based on multi-sheet printed technology and preparation method thereof - Google Patents
A kind of waveguide based on multi-sheet printed technology and preparation method thereof Download PDFInfo
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- CN104218296B CN104218296B CN201410453137.2A CN201410453137A CN104218296B CN 104218296 B CN104218296 B CN 104218296B CN 201410453137 A CN201410453137 A CN 201410453137A CN 104218296 B CN104218296 B CN 104218296B
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Abstract
The present invention relates to a kind of waveguide based on multi-sheet printed technology and preparation method, the waveguide is used as medium substrate group using multilayer planar plate, and enter row metal coating to the upper and lower flat board, and cavity is designed in the medium substrate group that multilayer planar plate is constituted and metal throuth hole is laid, obtained substrate integrated metal waveguide, the method that SIW discrete ground connection replaces continuous ground has been continued to use in the waveguide, metalloid waveguiding structure is realized in multi-sheet printed structure, obtained substrate integrated metal waveguide is designed using the inventive method, when ignoring radiation loss, its transmission characteristic is consistent with metal waveguide, and reduce waveguide fabrication technology.
Description
Technical field
The present invention relates to microwave transmission line field, more particularly to a kind of waveguide and preparation side based on multi-sheet printed technology
Method, metal clad planar waveguide is obtained using planar multilayer printing and the design of discrete grounding.
Background technology
Substrate integration wave-guide (SIW) is international microwave integrated technology fashionable in recent years, has obtained the pole of academia
Big concern.In microwave high-frequency section, SIW can obtain higher single-chamber nonloaded Q, wherein general relative to common planar circuit
The highest nonloaded Q of logical planar circuit is about 100, and SIW nonloaded Q may be up to 300~500, therefore micro- using SIW transmission
Ripple signal, its insertion loss is about the half of planar structure waveguide, therefore is widely applied.
Metal waveguide uses stereochemical structure, and its transmission loss is smaller than the transmission loss of planar structure waveguide, common metal knot
The transmission loss of structure waveguide is about 1/10th of SIW transmission loss, but is due to that metal waveguide uses stereochemical structure, passes through machine
Tool processing is higher to technological requirement when realizing, realizes that difficulty is big, particularly the connectivity problem of structural member and planar circuit, is always
The integrated difficult point of metal waveguide.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of waveguide based on multi-sheet printed technology and system
Preparation Method, the waveguide realizes metalloid waveguiding structure in multi-sheet printed structure, and the waveguide that the present invention is provided is integrated for substrate
Metal waveguide (SIMW), when ignoring radiation loss, its transmission characteristic is consistent with metal waveguide, and adding relative to metal waveguide
Work technique, the present invention can further simplified processing process, and in the substrate integrated metal waveguide fabrication process of the present invention
The processing technology of maturation is employed, waveguide manufacturing cost can be greatly reduced, is improved with the life between batch or different batches of product
Produce uniformity.
The above-mentioned purpose of the present invention is achieved by following technical solution：
A kind of waveguide based on multi-sheet printed technology, its medium substrate group is m layer plane printed panels, the m layer planes print
Brush board is ordered as the 1st layer~m layers from top to bottom, and m is positive integer and m >=3, wherein the lower surface of the 1st layer plane printed panel and
There is layer of metal coat the upper surface of m layer plane printed panels respectively；There is a cavity between the double layer of metal coat,
The narrow side of cavity and the broadside of cavity are mutually perpendicular to, and the narrow edge lengths of cavity are equal to b, and the width edge length of cavity is equal to c, wherein b
For the gross thickness of the 2nd layer~m-1 layers of planographic plate；Metal throuth hole, the metal are provided with planographic plate surface
Through hole insertion m layer plane printed panels, and the metal throuth hole is distributed as two rows planographic version surface is parallel, distribution arrangement with
The broadside of the cavity is vertical, wherein, the center spacing E=3D in metal throuth hole between two neighboring metal throuth hole is often arranged, D is gold
Belong to the aperture of through hole, and it is wherein vertical between the line at row's metal throuth hole center and the line at another row's metal throuth hole center
Distance is equal to the cavity width edge length c；Put down perpendicular to planographic plate surface, the broadside of the cavity on the narrow side of the cavity
Row is in planographic plate surface, and narrow side is vertical with the transmission direction of waveguide with the plane that broadside is constituted.
The above-mentioned waveguide based on multi-sheet printed technology, the lower surface and m layer plane printed panels of the 1st layer plane printed panel
Upper surface on metal coat thickness be more than waveguide work frequency range skin depth δ:
Wherein, f is the working frequency of waveguide, and μ is the magnetic conductivity of the metal coating material, and σ is that the metal coats material
The electrical conductivity of material.
The above-mentioned waveguide based on multi-sheet printed technology, sets respectively on the outside of two row's metal throuth holes of planographic plate surface
There is n to arrange metal throuth hole, the vertical interval of n row's metal throuth hole lines of centres of described the same side is 3D, often arranges phase in metal throuth hole
The center spacing of adjacent metal throuth hole is 3D, and increased 2n rows metal throuth hole is used for the radiation loss for reducing waveguide.
The preparation method of the above-mentioned waveguide based on multi-sheet printed technology, comprises the following steps：
(1) the width edge length a and height b of metal waveguide, are set；
(2), from m layer planes printed panel as medium substrate group, wherein, m is positive integer and m >=3；The m layer planes
Printed panel is ordered as the 1st layer~m layers from top to bottom, wherein, the gross thickness of the 2nd layer~m-1 layers of planographic plate is equal to
The metal waveguide height b of step (1) setting；
(3), row metal coating is entered in the lower surface of the 1st layer plane printed panel and the upper surface of m layer plane printed panels；
(4), the 2nd layer~m-1 layers of planographic plate is processed, two layers of the gold medal obtained in step (3)
Belong to one cavity of formation between coat so that the narrow edge lengths of the cavity are equal to b, and the width edge length c of the cavity is by step
Suddenly the metal waveguide width edge length a of (1) setting, which is calculated, obtains；
(5), metal throuth hole is opened up in planographic plate surface, the metal throuth hole insertion m layer plane printed panels, and it is described
Surface is parallel is distributed as two rows in planographic version for metal throuth hole, and distribution arrangement is vertical with the broadside of the cavity, wherein,
The aperture of the metal throuth hole is D, the center spacing E=3D in metal throuth hole between two neighboring metal throuth hole is often arranged, wherein one
The vertical range arranged between the line at metal throuth hole center and the line at another row's metal throuth hole center is equal to the cavity broadside
Length c.
The preparation method of the above-mentioned waveguide based on multi-sheet printed technology, to the 2nd layer~m-1 layers in step (4)
Planographic plate is processed according to multi-layer PCB or the progress of LTCC techniques.
The preparation method of the above-mentioned waveguide based on multi-sheet printed technology, the width edge length c of the cavity is set by step (1)
Fixed metal waveguide width edge length a is calculated by equation below and obtained：
A=-0.047c3+0.1825c2-1.3035c+9.3771。
The preparation method of the above-mentioned waveguide based on multi-sheet printed technology, is existed in step (5) using metal pore-formed technique
Planographic plate surface opens up metal throuth hole.
In the preparation method of the above-mentioned waveguide based on multi-sheet printed technology, step (5), opened up in planographic plate surface
Metal throuth hole, opens up n row's metal throuth holes respectively on the outside of the two row's metal throuth holes opened up, and n row's metals of described the same side lead to
The vertical interval of the hole line of centres is 3D, and the center spacing for often arranging adjacent metal through hole in metal throuth hole is 3D, and wherein n is just whole
Number.
The preparation method of the above-mentioned waveguide based on multi-sheet printed technology, if waveguide is in high band operation, selects poly- four
The medium substrate group of PVF material.
The present invention has the advantages that compared with prior art：
(1) waveguide that the present invention is provided is put down using multilayer planar printed panel as medium substrate group, and in the upper and lower
There is metal coat on the surface of face printing, has cavity in the medium substrate group that multilayer planar printed panel is constituted, in planographic
Plate surface obtains substrate integrated metal waveguide (SIMW) provided with metal throuth hole is set, and the substrate integrated metal waveguide prints in multilayer
Metalloid waveguiding structure is realized in brush configuration, its transmission performance is a with width edge length, be highly b metal waveguide it is close, with
The substrate integration wave-guide (SIW) of planar structure is compared, and its efficiency of transmission is greatly improved；
(2) the waveguide preparation method that the present invention is provided, can obtain the substrate collection close with metal waveguide transmission performance
Into metal waveguide, but processing technology significantly simplifies with respect to the metal waveguide of stereochemical structure, waveguide preparation method of the invention and gold
The preparation method of category waveguide is compared, and mechanical solid processing is changed into planographic manufacture, waveguide device and plane is greatly improved
The Integration Design of circuit, because avoiding the three-dimension process of metal waveguide, therefore improves machining accuracy, and save metal
Resource, and avoid part metals waveguide mechanical connection problem.
(3) waveguide that the present invention is provided and preparation method thereof, in waveguide fabrication process, using ripe processing technology,
Such as multi-layer PCB or LTCC techniques, waveguide manufacturing cost can be greatly reduced, and improve with the life between batch or different batches of product
Produce uniformity.
Brief description of the drawings
Fig. 1 is the top view of the one section of substrate integrated metal waveguide obtained using waveguide implementation method of the present invention；
Fig. 2 is that waveguide shown in Fig. 1 carries out the sectional view of section view in A-A directions.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
The present invention from multilayer planar printed panel as medium substrate group, and in the top plate of the multilayer planar printed panel
Row metal coating is entered in the upper surface of lower surface and lower plywood, and processes one between the upper and lower surface of above-mentioned double layer of metal coat
Individual cavity, and two row's metal throuth holes are set in the direction from top to bottom of multilayer planar printed panel, i.e., existed using discrete earthing mode
Realize that metal waveguide is designed in multilayer planar printed panel structure, the waveguide realized by this method is referred to as substrate collection by the present invention
Into metal waveguide (SIMW), this waveguide is when ignoring radiation loss, and its transmission characteristic is consistent with metal waveguide, but processing technology
Metal waveguide with respect to stereochemical structure significantly simplifies.
The waveguide based on multi-sheet printed technology of the present invention, its medium substrate group is m layer plane printed panels, and described m layers is put down
Face printed panel is ordered as the 1st layer~m layers from top to bottom, and m is positive integer and m >=3, wherein the following table of the 1st layer plane printed panel
There is layer of metal coat face and the upper surface of m layer plane printed panels respectively；There is one between the double layer of metal coat
Cavity, the narrow side of cavity and the broadside of cavity are mutually perpendicular to, and the narrow edge lengths of cavity are equal to b, and the width edge length of cavity is equal to c,
Wherein b is the gross thickness of the 2nd layer~m-1 layers of planographic plate；Metal throuth hole is provided with planographic plate surface, it is described
Metal throuth hole insertion m layer plane printed panels, and surface is parallel is distributed as two rows, distribution side in planographic version for the metal throuth hole
To vertical with the broadside of the cavity, wherein, often arrange the center spacing E=3D, D in metal throuth hole between two neighboring metal throuth hole
For the aperture of metal throuth hole, and wherein between the line at row's metal throuth hole center and the line at another row's metal throuth hole center
Vertical range is equal to the cavity width edge length c；The narrow side of the cavity is perpendicular to planographic plate surface, the width of the cavity
While parallel to planographic plate surface, and narrow side is vertical with the transmission direction of waveguide with the plane that broadside is constituted.
Wherein, the metal coating thickness on the lower surface of the 1st layer plane printed panel and the upper surface of m layer plane printed panels
Skin depth δ of the degree more than waveguide work frequency range:
Wherein, f is the working frequency of waveguide, and μ is the magnetic conductivity of the metal coating material, and σ is that the metal coats material
The electrical conductivity of material.
In the present invention, in order to reduce the radiation loss of waveguide, divide on the outside of two row's metal throuth holes of planographic plate surface
Not She You n row metal throuth hole, wherein the same side n row the metal throuth hole line of centres vertical interval be 3D, often arrange metal throuth hole
The center spacing of middle adjacent metal through hole is 3D.
The preparation method of the above-mentioned waveguide based on multi-sheet printed technology, comprises the following steps：
(1) the width edge length a and height b of metal waveguide, are set；
(2), from m layer planes printed panel as medium substrate group, wherein, m is positive integer and m >=3；The m layer planes
Printed panel is ordered as the 1st layer~m layers from top to bottom, wherein, the gross thickness of the 2nd layer~m-1 layers of planographic plate is equal to
The metal waveguide height b of step (1) setting；
(3), row metal coating is entered in the lower surface of the 1st layer plane printed panel and the upper surface of m layer plane printed panels；
(4), the 2nd layer~m-1 layers of planographic plate is processed using multi-layer PCB or LTCC techniques,
A cavity is formed between the double layer of metal coat obtained in step (3) so that the narrow edge lengths of the cavity are equal to b, institute
State the metal waveguide width edge length a that the width edge length c of cavity sets by step (1) and calculated by below equation and obtained：
A=-0.047c3+0.1825c2-1.3035c+9.3771。
The calculation formula is to obtain empirical equation by Multi simulation running.
(5) metal throuth hole, m layers of the metal throuth hole insertion, are opened up in planographic plate surface using metal pore-formed technique
Planographic plate, and the metal throuth hole is distributed as two rows planographic version surface is parallel, distribution arrangement and the cavity
Broadside is vertical, wherein, the aperture of the metal throuth hole is D, in often arranging in metal throuth hole between two neighboring metal throuth hole
In the heart away from E=3D, wherein between the line at row's metal throuth hole center and the line at another row's metal throuth hole center it is vertical away from
From equal to the cavity width edge length c.
In order to reduce the radiation loss of waveguide, opened up respectively on the outside of the two row's metal throuth holes that can also have been opened up more than
N arranges metal throuth hole, and the vertical interval of n row's metal throuth hole lines of centres of described the same side is 3D, often arranges increased metal throuth hole
The center spacing of middle adjacent metal through hole is 3D, and wherein n is positive integer.
If waveguide is in high band operation, the medium substrate group of preferably polytetrafluoroethylene material.
Embodiment：
The operating center frequency f=14GHz of waveguide, using m layer planes printed panel as medium substrate group wherein, the 2nd layer
The gross thickness of~the m-1 layers of planographic plate is 7mm, the lower surface of the 1st layer plane printed panel and m layer plane printed panels
There is metal coat upper surface, and the metal coat thickness is 7um；Between double layer of metal coat the narrow edge lengths of cavity be 7mm,
Width edge length c is 14mm；Provided with metal throuth hole in planographic plate surface, the metal throuth hole insertion m layer plane printed panels,
And the metal throuth hole is distributed as two rows planographic version surface is parallel, the broadside of distribution arrangement and the cavity is hung down
Directly, wherein, the aperture D=0.4mm of metal throuth hole often arranges the center spacing E=in metal throuth hole between two neighboring metal throuth hole
1.3mm, wherein the vertical range between the line at row's metal throuth hole center and the line at another row's metal throuth hole center is equal to
The cavity width edge length c=14mm.
Using simulation software HFSS to more than waveguide emulate, and to the metal waveguide in same working frequency range with
SIW is emulated, and the width edge length of wherein metal waveguide is 13.93mm, is highly 6.965mm, SIW width edge length, narrow side
Length is respectively 6.68mm and 3.34mm, by emulation obtain waveguide of the present invention, metal waveguide, SIW differential loss be respectively-
0.0196dB, -0.0029dB and -0.3893dB.
It is described above, it is only the optimal embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (6)
1. a kind of waveguide based on multi-sheet printed technology, it is characterised in that：Medium substrate group is m layer plane printed panels, described m layers
Planographic plate is ordered as the 1st layer~m layers from top to bottom, and m is positive integer and m >=3, wherein under the 1st layer plane printed panel
There is layer of metal coat surface and the upper surface of m layer plane printed panels respectively；Have one between the double layer of metal coat
Individual cavity, the narrow side of cavity and the broadside of cavity are mutually perpendicular to, and the narrow edge lengths of cavity are equal to b, and the width edge length of cavity is equal to
C, wherein b are the gross thickness of the 2nd layer~m-1 layers of planographic plate；Metal throuth hole, institute are provided with planographic plate surface
State metal throuth hole insertion m layer plane printed panels, and the metal throuth hole is distributed as two rows, distribution planographic version surface is parallel
Direction is vertical with the broadside of the cavity, wherein, often arrange the center spacing E=in metal throuth hole between two neighboring metal throuth hole
3D, D are the aperture of metal throuth hole, and wherein the line at the line at row's metal throuth hole center and another row's metal throuth hole center it
Between vertical range be equal to the cavity width edge length c, and the width edge length c of the cavity leads to by metal waveguide width edge length a
Equation below calculating is crossed to obtain：A=-0.047c3+0.1825c2-1.3035c+9.3771；The narrow side of the cavity is perpendicular to flat
Face printing plate surface, the broadside of the cavity is parallel to planographic plate surface, and the plane that is constituted with broadside of narrow side and waveguide
Transmission direction it is vertical；N row's metal throuth holes are respectively equipped with the outside of two row's metal throuth holes of planographic plate surface, the same side
The vertical interval of n row's metal throuth hole lines of centres is 3D, and the center spacing for often arranging adjacent metal through hole in metal throuth hole is 3D, its
Middle n is positive integer.
2. a kind of waveguide based on multi-sheet printed technology according to claim 1, it is characterised in that the 1st layer plane prints
The skin that becomes that metal coat thickness on the lower surface of plate and the upper surface of m layer plane printed panels is more than waveguide work frequency range is deep
Spend δ:
<mrow>
<mi>&delta;</mi>
<mo>=</mo>
<msqrt>
<mfrac>
<mn>2</mn>
<mrow>
<mi>&pi;</mi>
<mi>f</mi>
<mi>&mu;</mi>
<mi>&sigma;</mi>
</mrow>
</mfrac>
</msqrt>
</mrow>
Wherein, f is the working frequency of waveguide, and μ is the magnetic conductivity of metal coat, and σ is the electrical conductivity of the metal coating material.
3. a kind of preparation method of waveguide based on multi-sheet printed technology according to claim 1, it is characterised in that：Including
Following steps：
(1) the width edge length a and height b of metal waveguide, are set；
(2), from m layer planes printed panel as medium substrate group, wherein, m is positive integer and m >=3；The m layer planes printing
Plate is ordered as the 1st layer~m layers from top to bottom, wherein, the gross thickness of the 2nd layer~m-1 layers of planographic plate is equal to described
The metal waveguide height b of step (1) setting；
(3), row metal coating is entered in the lower surface of the 1st layer plane printed panel and the upper surface of m layer plane printed panels；
(4), the 2nd layer~m-1 layers of planographic plate is processed, the double layer of metal obtained in step (3) is applied
A cavity is formed between coating so that the narrow edge lengths of the cavity are equal to b, and the width edge length c of the cavity is by step (1)
The metal waveguide width edge length a of setting is calculated and obtained, and calculation formula is as follows：
A=-0.047c3+0.1825c2-1.3035c+9.3771；
(5) metal throuth hole, the metal throuth hole insertion m layer plane printed panels, and the metal, are opened up in planographic plate surface
Surface is parallel is distributed as two rows in planographic version for through hole, and distribution arrangement is vertical with the broadside of the cavity, wherein, it is described
The aperture of metal throuth hole is D, the center spacing E=3D in metal throuth hole between two neighboring metal throuth hole is often arranged, wherein a row is golden
The vertical range belonged between the line at through hole center and the line at another row's metal throuth hole center is equal to the cavity width edge length
c；It is respectively equipped with the outside of two row's metal throuth holes of planographic plate surface in n row's metal throuth holes, n row's metal throuth holes of the same side
The vertical interval of heart line is 3D, and the center spacing for often arranging adjacent metal through hole in metal throuth hole is 3D, and wherein n is positive integer.
4. the preparation method of a kind of waveguide based on multi-sheet printed technology according to claim 3, it is characterised in that in step
Suddenly the 2nd layer~m-1 layers of planographic plate is processed in (4) according to multi-layer PCB or the progress of LTCC techniques.
5. the preparation method of a kind of waveguide based on multi-sheet printed technology according to claim 3, it is characterised in that in step
Suddenly metal throuth hole is opened up in planographic plate surface using metal pore-formed technique in (5).
6. a kind of preparation method of waveguide based on multi-sheet printed technology according to claim 3, it is characterised in that if
Waveguide then selects the medium substrate group of polytetrafluoroethylene (PTFE) material in high band operation.
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| CN105390786B (en) * | 2015-12-02 | 2019-12-10 | 电子科技大学 | SIW transmission line |
| TWI719431B (en) * | 2019-03-21 | 2021-02-21 | 啓碁科技股份有限公司 | Transition device |
| CN112713376B (en) * | 2020-12-28 | 2022-08-23 | 赣州市深联电路有限公司 | Method for preparing millimeter wave substrate integrated waveguide structure |
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| WO2012140422A1 (en) * | 2011-04-12 | 2012-10-18 | Filtronic Plc | A substrate integrated waveguide to air filled waveguide transition |
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| JP3366552B2 (en) * | 1997-04-22 | 2003-01-14 | 京セラ株式会社 | Dielectric waveguide line and multilayer wiring board including the same |
| FI113581B (en) * | 1999-07-09 | 2004-05-14 | Nokia Corp | Process for manufacturing a waveguide in multi-layer ceramic structures and waveguides |
| CN2886828Y (en) * | 2006-01-26 | 2007-04-04 | 东南大学 | Millimeter wave positioning coupler |
| CN101577358B (en) * | 2009-06-23 | 2013-04-03 | 北京信息科技大学 | Micromechanical terahertz waveguide, terahertz waveguide type resonant cavity and preparation method thereof |
| CN102509833B (en) * | 2011-10-26 | 2013-09-25 | 电子科技大学 | Device for converting substrate integrated waveguide to coaxial waveguide |
| CN102800906B (en) * | 2012-07-27 | 2015-04-15 | 电子科技大学 | Multilayer ceramic substrate integrated waveguide filter |
| CN103066357B (en) * | 2012-09-12 | 2016-05-25 | 电子科技大学 | Based on the circular waveguide of substrate integrated waveguide technology |
| CN103178321B (en) * | 2013-02-26 | 2016-01-13 | 西安空间无线电技术研究所 | SIW resonator and processing method thereof |
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| WO2012140422A1 (en) * | 2011-04-12 | 2012-10-18 | Filtronic Plc | A substrate integrated waveguide to air filled waveguide transition |
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