CN109066034A - A kind of curved substrate integration groove gap waveguide structure of circular arc - Google Patents
A kind of curved substrate integration groove gap waveguide structure of circular arc Download PDFInfo
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- CN109066034A CN109066034A CN201811246103.0A CN201811246103A CN109066034A CN 109066034 A CN109066034 A CN 109066034A CN 201811246103 A CN201811246103 A CN 201811246103A CN 109066034 A CN109066034 A CN 109066034A
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
Abstract
The present invention relates to a kind of curved substrate integration groove gap waveguide (B-SIGGW) structure of circular arc, the curved waveguide by two layer by layer dielectric-slab be formed by connecting.The upper surface of top dielectric plate is printed with metal layer, and metal layer both ends are separately connected transition transition line and feeding microstrip line, realizes the impedance matching of microstrip circuitry；It prints by metal circular patch the upper surface two sides of layer dielectric plate, centre is 90 ° of curved media slots of circular arc, lower surface is printed with ground metal layer, the periodical metallic vias of multiple rows of bend alignment is squeezed into the two sides of lower surface respectively, it is connected with upper surface metal circular patch, forms electro-magnetic bandgap Artificial magnetic conductor structure.The curved waveguide transmission mode is TE10 mould.The problems such as present invention realizes media slot transmission electromagnetic wave, reduces influence of the Waveguide Discontinuities to transmission characteristic, and the difficulty for solving metal groove waveguides is integrated, volume is big, and realize and the mode of microstrip circuitry is converted.
Description
Technical field
The present invention relates to electronic technology fields, and in particular to a kind of curved substrate integration groove gap waveguide structure of circular arc.
Background technique
Medium of the waveguide as transmission electromagnetic wave, the features such as loss because of its high power capacity, low transmission, in wireless communication system
It is widely applied in system.With the rapid development of microwave integrated circuit and the growing tension of frequency spectrum resource, miniaturization is integrated
To microwave circuit, more stringent requirements are proposed for change etc., and traditional rectangular waveguide is difficult to adapt to collect because of the disadvantages of volume is big, difficult integrated
At the development of circuit, and microstrip line, strip line etc. are also difficult to be competent at since the disadvantages of big is lost in it.
Gap waveguide (Gap Waveguide, GW) is a kind of novel waveguide structure, by two pieces of parallel metal conductor plates
It is made, upper layer metal plate has intermediate metal ridge/air groove and two as a perfect electric conductor (PEC) on lower metal plate
The artificial magnetic conductor (AMC) that side periodicity metal nail is formed is constituted, and is air gap layer between upper and lower level, electromagnetic wave can be along gold
Belong to ridge/air groove to be propagated.Gap waveguide is since closed metal conductor plate pass electromagnetic wave can only in inside up and down for it
It broadcasts, especially the air groove gap waveguide structure of vertical polarization, loss is only second to traditional rectangular waveguide.
Due to the structure of all-metal, gap waveguide is difficult to be integrated in circuit again, in order to improve this defect, studies people
Member starts to consider to realize gap waveguide using printed circuit board (PCB) technology, such as micro-strip ridge gap waveguide.Micro-strip ridge gap wave
It leads using PCB technology, metal ridge and AMC is realized by printed microstrip ridge on dielectric-slab and mushroom electromagnetic bandgap structure.And
Substrate integrates gap waveguide (SIGW) technology and on this basis, interstitial gap is improved to dielectric gap, improves the air gap
Unstable factor so that processing is also easier, and the cabling of micro-strip ridge also more flexible freedom.
It is usually needed in the practical application of waveguide waveguide bend, to facilitate the layout of integrated circuit, but simultaneously can band
Carry out the influence of Waveguide Discontinuities.How curved waveguide structure is designed, so that the influence of discontinuity is preferably minimized, it is that design is curved
When bent waveguide the problem of overriding concern.
A kind of curved substrate integration groove gap waveguide structure of circular arc (Bend Substrate Integrated of the present invention
Grove Gap Waveguid, B-SIGGW), 90 ° of circular arc curved waveguides are devised, between the air groove of all-metal
Gap waveguide carries out substrate and integrates, not only simple processing, but also its transmission characteristic can use the parameter in circuit and be controlled, real
Show the tunable of waveguide work frequency, greatly reduces influence of the discontinuity to waveguide transmission characteristic.Compare SIGW structure
Quasi-TEM mode transmission, which transmits TE mode, it is easier to carry out pattern analysis and mode conversion, and reduce SIGW's
The conduction loss of micro-strip metal ridge.
The content of present invention has no open report same as the present invention by literature search.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, designs a kind of circular arc curved substrate integration groove gap
Waveguiding structure.
A kind of curved substrate integration groove gap waveguide structure structure of circular arc of the present invention includes: top dielectric plate (1), lower layer
Dielectric-slab (2), in which:
A, the upper surface printing of top dielectric plate (1) is by metal layer (3), the both ends of upper surface metal layer (3) respectively with printing
Transition transition line metal layer (4,6) and feeding microstrip line metal layer (5,7) connection, microstrip line metal layer (5,7) is as waveguide
Two input/output end ports can be connected with other microstrip line devices or connector；
B, the two sides of the upper surface of layer dielectric plate (2) be printed with respectively multiple rows of bend alignment metal circular patch array (11,
12), the middle position of the non-type metal circular patch in the upper surface of layer dielectric plate (2) is 90 ° of curved media of circular arc
Slot (9)；The lower surface of layer dielectric plate (2) is printed with ground metal layer (8), and the period of multiple rows of bend alignment is squeezed into two sides respectively
Property metallic vias (10), metallic vias (10) and metal circular patch (11,12) concentric be connected, and forms the mushroom of bend alignment
Shape electro-magnetic bandgap (EBG) array of structures；
C, top dielectric plate (1) and layer dielectric plate (2) can be fixed together by bonding or screw, top dielectric plate (1) with
Layer dielectric plate (2) length and width is identical.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, top dielectric plate (1) are substrate collection
The clearance layer of grooving gap waveguide, thickness, which is less than, propagates the 1/4 of wavelength；The transition transition line metal layer of top dielectric plate (1)
(4,6) and feeding microstrip line metal layer (5,7) are the exchanging structure of waveguide and microstrip line.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, layer dielectric plate (2) are substrate collection
The via layer and medium groove layer of grooving gap waveguide；Media slot (9) width on layer dielectric plate (2) is fixed, is that medium passes
1.3 times of defeated wavelength, electromagnetic wave is transmitted in media slot, and transmission mode is TE10 mould；Change the width of media slot (9),
It will affect the transmission loss of waveguide.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, the dielectric of layer dielectric plate (2) are normal
Number has to be larger than the dielectric constant of top dielectric plate (1)；The dielectric constant for changing the two, can change the characteristic impedance of waveguide, when
When the dielectric constant of the two increases, the impedance of waveguide can reduce, and influence of the dielectric constant of layer dielectric plate (2) to impedance is wanted
Greater than top dielectric plate (1).
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, the metal mistake of layer dielectric plate (2)
Hole (10) and metal circular patch (11) constitute electro-magnetic bandgap, form AMC, can inhibit the electromagnetism wave direction two sides in media slot
Radiation；Change layer dielectric plate (2) on metallic vias (10) diameter and height and metal circular patch array (11,12) it is straight
Diameter, thus it is possible to vary the transmission band of waveguide: the diameter of metal circular patch is smaller, and the centre frequency of transmission band is higher, frequency range
Width is constant；Metallic vias diameter is bigger, and the centre frequency of transmission band is higher, and transmission band broadens；Change top dielectric
The thickness of plate (1), thus it is possible to vary the thickness of the characteristic impedance of waveguide, top dielectric plate (1) is bigger, and the characteristic impedance of waveguide is got over
Greatly.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, media slot (9) are vertical by two sections
Media slot and intermediate one section 90 ° of arc groove composition, the radius where circular arc is smaller, and the bending part of media slot is shorter, does not connect
Continuous influence of the property to waveguide is bigger, and transmission loss is bigger, and higher hamonic wave is more；It is right-angle bending wave if arc radius is 0
It leads；It is straight wave guide if arc radius is infinite.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, the loss angle of top dielectric plate (1)
Tangent is more demanding, the dielectric-slab that loss angle tangent need to be selected as far as possible small, but to the requirement of the loss angle tangent of layer dielectric plate (2)
It is not high, the dielectric-slab of cheap lossy may be selected, to reduce cost.
Compared with the prior art, the invention has the following advantages:
1, the problems such as traditional rectangular waveguide, volume of gap waveguide is big, hardly possible is processed, difficult integrated is solved；
2, there is low section, easy of integration, easy processing；
3, it is advantageously integrated wiring, and Waveguide Discontinuities influence is smaller；
4, the mode for adjusting waveguide work frequency is simple, and adjustable parameter is more.
Detailed description of the invention
Fig. 1 is a kind of overall structure figure of the curved substrate integration groove gap waveguide structure of circular arc of the present invention.
Fig. 2 is a kind of upper surface of the top dielectric plate of the curved substrate integration groove gap waveguide structure of circular arc of the present invention
Figure.
Fig. 3 is a kind of lower surface of the top dielectric plate of the curved substrate integration groove gap waveguide structure of circular arc of the present invention
Figure.
Fig. 4 is a kind of upper surface of the layer dielectric plate of the curved substrate integration groove gap waveguide structure of circular arc of the present invention
Figure.
Fig. 5 is a kind of lower surface of the layer dielectric plate of the curved substrate integration groove gap waveguide structure of circular arc of the present invention
Figure.
Fig. 6 is a kind of analogous diagram of the S11 and S21 of the curved substrate integration groove gap waveguide structure of circular arc of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail With reference to embodiment.
As shown in figures 1 to 6, a kind of curved substrate integration groove gap waveguide structure of circular arc of the present invention, comprising: top dielectric
Plate (1), layer dielectric plate (2), in which:
A, the upper surface printing of top dielectric plate (1) is by metal layer (3), the both ends of upper surface metal layer (3) respectively with printing
Transition transition line metal layer (4,6) and feeding microstrip line metal layer (5,7) connection, microstrip line metal layer (5,7) is as waveguide
Two input/output end ports can be connected with other microstrip line devices or connector；
B, the two sides of the upper surface of layer dielectric plate (2) be printed with respectively multiple rows of bend alignment metal circular patch array (11,
12), the middle position of the non-type metal circular patch in the upper surface of layer dielectric plate (2) is 90 ° of curved media of circular arc
Slot (9)；The lower surface of layer dielectric plate (2) is printed with ground metal layer (8), and the period of multiple rows of bend alignment is squeezed into two sides respectively
Property metallic vias (10), metallic vias (10) and metal circular patch (11,12) concentric be connected, and forms mushroom electro-magnetic bandgap
(EBG) array of structures；
C, top dielectric plate (1) and layer dielectric plate (2) can be fixed together by bonding or screw, top dielectric plate (1) with
Layer dielectric plate (2) length and width is identical.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, top dielectric plate (1) are substrate collection
The clearance layer of grooving gap waveguide, thickness, which is less than, propagates the 1/4 of wavelength；The transition transition line metal layer of top dielectric plate (1)
(4,6) and feeding microstrip line metal layer (5,7) are the exchanging structure of waveguide and microstrip line.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, layer dielectric plate (2) are substrate collection
The via layer and medium groove layer of grooving gap waveguide；Media slot (9) width on layer dielectric plate (2) is fixed, is that medium passes
1.3 times of defeated wavelength, electromagnetic wave is transmitted in media slot, and transmission mode is TE10 mould；Change the width of media slot (9),
It will affect the transmission loss of waveguide.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, the dielectric of layer dielectric plate (2) are normal
Number has to be larger than the dielectric constant of top dielectric plate (1)；The dielectric constant for changing the two, can change the characteristic impedance of waveguide, when
When the dielectric constant of the two increases, the impedance of waveguide can reduce, and influence of the dielectric constant of layer dielectric plate (2) to impedance is wanted
Greater than top dielectric plate (1).
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, the metal mistake of layer dielectric plate (2)
Hole (10) and metal circular patch (11) constitute electro-magnetic bandgap, form AMC, can inhibit the electromagnetism wave direction two sides in media slot
Radiation；Change layer dielectric plate (2) on metallic vias (10) diameter and height and metal circular patch array (11,12) it is straight
Diameter, thus it is possible to vary the transmission band of waveguide: the diameter of metal circular patch is smaller, and the centre frequency of transmission band is higher, frequency range
Width is constant；Metallic vias diameter is bigger, and the centre frequency of transmission band is higher, and transmission band broadens.Change top dielectric
The thickness of plate (1), thus it is possible to vary the thickness of the characteristic impedance of waveguide, top dielectric plate (1) is bigger, and the characteristic impedance of waveguide is got over
Greatly.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, media slot (9) are vertical by two sections
Media slot and intermediate one section 90 ° of arc groove composition, the radius where circular arc is smaller, and the bending part of media slot is shorter, does not connect
Continuous influence of the property to waveguide is bigger, and transmission loss is bigger, and higher hamonic wave is more；It is right-angle bending wave if arc radius is 0
It leads；It is straight wave guide if arc radius is infinite.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, the loss angle of top dielectric plate (1)
Tangent is more demanding, the dielectric-slab that loss angle tangent need to be selected as far as possible small, but to the requirement of the loss angle tangent of layer dielectric plate (2)
It is not high, the dielectric-slab of cheap lossy may be selected, to reduce cost.
A kind of curved substrate integration groove gap waveguide structure of circular arc as described above, waveguide appearance are positive L-shaped structure, whole
Body is having a size of 50.42mm*50.42mm*1.067mm；Top dielectric plate (1) uses the dielectric constant to be for 2.2, loss angle tangent
0.0009 dielectric material, layer dielectric plate (2) are the dielectric materials that dielectric constant is 3.48, loss angle tangent is 0.004.
S parameter simulation result shown in fig. 6 shows in 20GHz-34GHz frequency range, a kind of curved substrate of circular arc of the present invention
Integration groove gap waveguide structure has the transmission that S11 is largely lower than the impedance operator of -20dB and S12 is -1dB--2.2dB
Characteristic.
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
It makes a variety of changes.
Claims (8)
1. the present invention relates to a kind of curved substrate integration groove gap waveguide structures of circular arc characterized by comprising top dielectric
Plate (1), layer dielectric plate (2), in which:
A, the upper surface printing of top dielectric plate (1) is by metal layer (3), the both ends of upper surface metal layer (3) respectively with printing
Transition transition line metal layer (4,6) and feeding microstrip line metal layer (5,7) connection, microstrip line metal layer (5,7) is as waveguide
Two input/output end ports can be connected with other microstrip line devices or connector；
B, the two sides of the upper surface of layer dielectric plate (2) be printed with respectively multiple rows of bend alignment metal circular patch array (11,
12), the middle position of the non-type metal circular patch in the upper surface of layer dielectric plate (2) is 90 ° of curved media of circular arc
Slot (9)；The lower surface of layer dielectric plate (2) is printed with ground metal layer (8), and the period of multiple rows of bend alignment is squeezed into two sides respectively
Property metallic vias (10), metallic vias (10) and metal circular patch (11,12) concentric be connected, and forms mushroom electro-magnetic bandgap
(EBG) array of structures；
C, top dielectric plate (1) and layer dielectric plate (2) can be fixed together by bonding or screw, top dielectric plate (1) with
Layer dielectric plate (2) length and width is identical.
2. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: upper layer
Dielectric-slab (1) is the clearance layer of substrate integration groove gap waveguide, and thickness, which is less than, propagates the 1/4 of wavelength；Top dielectric plate (1)
Transition transition line metal layer (4,6) and feeding microstrip line metal layer (5,7) are the exchanging structure of waveguide and microstrip line.
3. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: lower layer
Dielectric-slab (2) is the via layer and medium groove layer of substrate integration groove gap waveguide；Media slot (9) on layer dielectric plate (2) is wide
Degree is fixed, is 1.3 times of medium transmission wavelength, and electromagnetic wave is transmitted in media slot, and transmission mode is TE10 mould；Change
The width of media slot (9), will affect the transmission loss of waveguide.
4. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: lower layer
The dielectric constant of dielectric-slab (2) has to be larger than the dielectric constant of top dielectric plate (1)；The dielectric constant for changing the two, can change
The characteristic impedance of waveguide, when the dielectric constant of the two increases, the impedance of waveguide can reduce, and the dielectric of layer dielectric plate (2)
Influence of the constant to impedance is greater than top dielectric plate (1).
5. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: lower layer
The metallic vias (10) and metal circular patch (11) of dielectric-slab (2) constitute electro-magnetic bandgap, form AMC, can inhibit medium
Electromagnetism wave direction two sides radiation in slot；Change the diameter of metallic vias (10) and height and metal circular on layer dielectric plate (2)
The diameter of patch array (11,12), thus it is possible to vary the transmission band of waveguide: the diameter of metal circular patch is smaller, transmission band
Centre frequency it is higher, bin width is constant；Metallic vias diameter is bigger, and the centre frequency of transmission band is higher, and transmitting pin
Duan Biankuan；Change the thickness of top dielectric plate (1), thus it is possible to vary the thickness of the characteristic impedance of waveguide, top dielectric plate (1) is got over
Greatly, the characteristic impedance of waveguide is bigger.
6. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: medium
Slot (9) is made of two sections of vertical media slots and intermediate one section 90 ° of arc groove, and the radius where circular arc is smaller, media slot
Bending part is shorter, and influence of the discontinuity to waveguide is bigger, and transmission loss is bigger, and higher hamonic wave is more；If arc radius
It is 0, is right-angle bending waveguide；It is straight wave guide if arc radius is infinite.
7. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: upper layer
The loss angle tangent of dielectric-slab (1) is more demanding, the dielectric-slab that loss angle tangent need to be selected as far as possible small, but to layer dielectric plate
(2) loss angle tangent is of less demanding, and the dielectric-slab of cheap lossy may be selected, to reduce cost.
8. the curved substrate integration groove gap waveguide structure of a kind of circular arc according to claim 1, it is characterised in that: waveguide
Appearance is positive L-shaped structure, overall dimensions 50.42mm*50.42mm*1.067mm；Top dielectric plate (1) use dielectric constant for
2.2, loss angle tangent be 0.0009 dielectric material, layer dielectric plate (2) be dielectric constant be 3.48, loss angle tangent is
0.004 dielectric material.
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| CN201811246103.0A CN109066034A (en) | 2018-10-24 | 2018-10-24 | A kind of curved substrate integration groove gap waveguide structure of circular arc |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740962A (en) * | 2021-09-07 | 2021-12-03 | 中山大学 | Structure for inhibiting Fresnel reflection in waveguide structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953153A (en) * | 2017-04-13 | 2017-07-14 | 南京邮电大学 | The integrated non-radiative chevron shaped power splitter of Medium Wave Guide of substrate |
| CN107134624A (en) * | 2017-06-02 | 2017-09-05 | 南京理工大学 | One kind is based on micro-strip ridge gap waveguide unequal power divider |
| CN208849054U (en) * | 2018-10-24 | 2019-05-10 | 云南大学 | Curved novel substrate integration groove gap waveguide structure |
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2018
- 2018-10-24 CN CN201811246103.0A patent/CN109066034A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953153A (en) * | 2017-04-13 | 2017-07-14 | 南京邮电大学 | The integrated non-radiative chevron shaped power splitter of Medium Wave Guide of substrate |
| CN107134624A (en) * | 2017-06-02 | 2017-09-05 | 南京理工大学 | One kind is based on micro-strip ridge gap waveguide unequal power divider |
| CN208849054U (en) * | 2018-10-24 | 2019-05-10 | 云南大学 | Curved novel substrate integration groove gap waveguide structure |
Non-Patent Citations (1)
| Title |
|---|
| TITUS OYEDOKUN等: "Experimental Characterisation of Planar Groove Gap Waveguide and Cavity" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740962A (en) * | 2021-09-07 | 2021-12-03 | 中山大学 | Structure for inhibiting Fresnel reflection in waveguide structure |
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Application publication date: 20181221 |