CN102324627A - Miniaturization substrate integrated multi-beam antenna - Google Patents
Miniaturization substrate integrated multi-beam antenna Download PDFInfo
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- CN102324627A CN102324627A CN201110262019A CN201110262019A CN102324627A CN 102324627 A CN102324627 A CN 102324627A CN 201110262019 A CN201110262019 A CN 201110262019A CN 201110262019 A CN201110262019 A CN 201110262019A CN 102324627 A CN102324627 A CN 102324627A
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- 239000000758 substrate Substances 0.000 title claims abstract description 76
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 230000010354 integration Effects 0.000 claims description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 230000005855 radiation Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 11
- 230000010363 phase shift Effects 0.000 description 9
- 238000007493 shaping process Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006263 metalation reaction Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The invention relates to a miniaturization substrate integrated multi-beam antenna which comprises a metal copper-clad upper layer, a dielectric layer and a metal copper-clad lower layer which are sequentially laminated from top to bottom, wherein the metal-clad upper layer comprises a feed upper meter area, a multi-mode upper meter area and N groups of triangular upper meter areas which are sequentially arrayed from the input end to the radiation end; the multi-mode upper meter area is connected with the feed upper meter area; the N groups of triangular upper meter areas are connected with the multi-mode upper meter area; the metal copper-clad lower layer comprises a feed lower meter area, a multi-mode lower meter area and N groups of triangular lower meter areas; the feed lower meter area, the multi-mode lower meter area and the N groups of triangular lower meter areas are sequentially arrayed from the input end to the radiation end; the multi-mode lower meter area is connected with the feed lower meter area; the N groups of triangular lower meter areas are connected with the multi-mode lower meter area; and the dielectric layer is internally provided with N+1 rows of metallized through holes which penetrate through the feed upper meter area and the dielectric layer and are connected with the feed lower meter area as well as penetrate through the feed upper meter area and the dielectric layer and are connected with the multi-mode lower meter area. The invention has the benefit that a multi-beam antenna structure is compact, thus higher radiation efficiency is acquired.
Description
Technical field
The invention belongs to the microwave and millimeter wave antenna technical field, particularly a kind of multi-beam antenna of substrate integrated wave-guide.
Background technology
A kind of as smart antenna, multi-beam antenna can generate a plurality of different wave beams that point to, and can select wave beam to aim at the useful signal direction, disturbs thereby reduce, and increases the system channel capacity, has therefore obtained in the high-rate wireless communication field to pay close attention to widely.
Up to the present, the researcher is based on multiple guided wave structure formed some kinds of dissimilar multi-beam antennas of having realized such as microstrip line, metal waveguide, substrate integration wave-guides.Wherein, The multi-beam antenna that is made up of substrate integration wave-guide has that metal loss is low, low, the integrated design of radiation mutual coupling is easy, processing cost is low, favorable repeatability, be easy to the advantage of large-scale production; Solve the problem of the integrated and critical component Wave-packet shaping network complanation of multi-beam antenna preferably, when operating frequency is higher, had remarkable advantages.
Yet multi-beam antenna of substrate integrated wave-guide also needs further to solve the technical barrier of its miniaturization.Existing multi-beam antenna of substrate integrated wave-guide constitutes by three son parts, i.e. Wave-packet shaping network, antenna array and the phase shift between the two connects network.To the multi-beam antenna of substrate integrated wave-guide miniaturization a kind of solution has preferably been proposed at present; As shown in Figure 1; This multi-beam antenna still is made up of three son parts; Be that symmetrical multi-mode substrate integration waveguide, antenna array and the phase shift between the two connect network, wherein symmetrical multi-mode substrate integration waveguide is the key technology that realizes the multi-beam antenna miniaturization as Wave-packet shaping network.This symmetry multi-mode substrate integration waveguide is eight port organizations of a symmetry; Have four input ports and four output ports; During from different input port input signal; Can generate constant amplitude and have four tunnel of certain phase difference at four output ports and export signals, connect network through phase shift and import four groups of antenna elements, the final wave beams that generate different sensings.This structure can be dwindled traditional Wave-packet shaping network---butler matrix area half the.
The number of patent application of inventor application is to disclose a kind of multi-mode substrate integration waveguide beam shaping network in the application for a patent for invention of CN200810022648.3, and it has comprised multi-mode substrate integration waveguide (being above-mentioned symmetrical multi-mode substrate integration waveguide) and substrate integration wave-guide phase-shift network (being that above-mentioned phase shift is connected network).When using this multi-mode substrate integration waveguide beam shaping network and antenna array to be connected to form the integrated multi-beam antenna of substrate, wherein must contain the substrate integration wave-guide phase-shift network in order to connect antenna array and multi-mode substrate integration waveguide.Because above-mentioned three modules need cascade successively, essential, so complex design, volume is bigger than normal.
Summary of the invention
The objective of the invention is to have proposed the integrated multi-beam antenna of a kind of miniaturization substrate in order to overcome existing multi-beam antenna of substrate integrated wave-guide circuit structure area deficiency bigger than normal.
To achieve these goals; Technical scheme of the present invention is: the integrated multi-beam antenna of a kind of miniaturization substrate; Comprise that the metal that stacks gradually from top to bottom covers copper upper strata, dielectric layer, metal and covers copper lower floor; It is characterized in that; Said metal cover the copper upper strata comprise from input to table section on the feed that spoke side is arranged in order, with feed on table section on the multimode that is connected of table section, with multimode on table section on the N group triangle that is connected of table section; Said metal cover copper lower floor comprise from input to table section under the feed that spoke side is arranged in order, with feed under table section under the multimode that is connected of table section, with multimode under table section under the N group triangle that is connected of table section; Have N+1 row plated-through hole in the said dielectric layer, said plated-through hole has run through on the feed that table section is connected formation N line feed substrate integration wave-guide under the table section and dielectric layer and feed; Run through on the multimode that table section is connected under the table section and dielectric layer and multimode; Form one road asymmetrical multi-mode substrate integration waveguide, on said dielectric layer and the N group triangle that is positioned at its both sides under table section and the N group triangle table section form antenna array, on the said triangle under table section and the triangle table section mirror image symmetrical.
Beneficial effect of the present invention: because the present invention becomes asymmetric structure with the multi-mode substrate integration waveguide of the symmetry in the existing multi-beam antenna of substrate integrated wave-guide miniaturization scheme; Make its can be directly and antenna array integrated; Need not to re-use phase shift and connect network; So just when realizing same circuit function, reduce the area and the structure complexity of circuit structure, made the multi-beam antenna compact conformation, and therefore obtained higher radiation efficiency.
Description of drawings
Fig. 1 is the structured flowchart of existing multi-beam antenna of substrate integrated wave-guide miniaturization scheme.
Fig. 2 is the structured flowchart of the integrated multi-beam antenna of miniaturization substrate of the present invention.
Fig. 3 is the tomograph of the integrated multi-beam antenna of miniaturization substrate of the present invention.
Fig. 4 is the plan structure figure of the integrated multi-beam antenna of miniaturization substrate of the present invention.
Fig. 5 is the circuit structure diagram that the metal of the integrated multi-beam antenna of miniaturization substrate of the present invention covers the copper upper strata.
Fig. 6 is the circuit structure diagram that the metal of the integrated multi-beam antenna of miniaturization substrate of the present invention covers copper lower floor.
Embodiment
Like Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6; The integrated multi-beam antenna of a kind of miniaturization substrate; Comprise that the metal that stacks gradually from top to bottom covers copper upper strata 1, dielectric layer 3, metal and covers copper lower floor 2; In order to form the integrated multi-beam antenna of miniaturization substrate of the present invention; Through printed-circuit board manufacturing technology to metal cover copper upper strata 1, metal covers copper lower floor 2 and is processed to form required metal pattern (circuit structure); Divide through virtual chain-dotted line between the each several part in this pattern; Do surface metalation processing formation plated-through hole 31 to dielectric layer 3 punchings and to the hole; Said metal cover copper upper strata 1 comprise from input on the feed that spoke side (Fig. 5 from right to left) is arranged in order table section 11, with feed on table section 12 on the multimode that is connected of table section 11, with multimode on table section 13 on four groups of triangles being connected of table section 12, said metal cover copper lower floor 2 comprise from input under the feed that spoke side (Fig. 6 from right to left) is arranged in order table section 21, with feed under table section 22 under the multimode that is connected of table section 21, with multimode under table section 23 under four groups of triangles being connected of table section 22, have five row's plated-through holes 31 in the said dielectric layer 3; Three row's length are identical wherein; The outside two row's length are longer, and said plated-through hole 31 has run through on the feed that table section 21 is connected under the table section 11 and dielectric layer 3 and feed, forms four line feed substrate integration wave-guides; Run through on the multimode that table section 22 is connected under the table section 12 and dielectric layer 3 and multimode; Form one tunnel asymmetric multi-mode substrate integration waveguide, on said dielectric layer 3 and the four groups of triangles that are positioned at its both sides under table section 13 and the four groups of triangles table section 23 form antenna arrays, on the said triangle under table section 13 and the triangle table section 23 both mirror images symmetrical.
Those of ordinary skill in the art is to be appreciated that; On row's number of plated-through hole 31 and the triangle under table section 13 and the triangle quantity of table section 23 are way (the input port quantity of multi-beam antenna) decisions by the feed substrate integration wave-guide; The input port quantity of multi-beam antenna equals the quantity with different wave beams that point to that multi-beam antenna generates; Therefore; Although specific embodiment of the present invention adopts four road input ports and five row's plated-through holes 31, do not influence the multi-beam antenna that those of ordinary skill in the art adopts other N road of present technique scheme implementation (N is the natural number more than or equal to two) input port.
The input port of four line feed substrate integration wave-guides is input port a, port b, port c, the port d of whole multi-beam antenna; It can be substrate integrated wave guide structure, also can be converted into structures such as microstrip line, co-planar waveguide, metal waveguide, coaxial line by substrate integration wave-guide; The output port of four line feed substrate integration wave-guides is four input ports of asymmetrical multi-mode substrate integration waveguide; From any line feed substrate integration wave-guide input signal; Can play a plurality of electric field patterns at asymmetrical multi-mode substrate integration waveguide underexcitation; The size of the asymmetrical multi-mode substrate integration waveguide of appropriate design can be in synthetic needed amplitude of the output port of asymmetrical multi-mode substrate integration waveguide and PHASE DISTRIBUTION; The output port of asymmetrical multi-mode substrate integration waveguide directly links to each other with antenna array, emittance, on the triangle under table section 13 and the triangle size of table section 23 also need be optimized to obtain better performance.
The scheme of present embodiment is with respect to existing technical scheme (being disclosed a kind of multi-mode substrate integration waveguide beam shaping network in the application for a patent for invention of CN200810022648.3 like the number of patent application of inventor application); Multi-mode substrate integration waveguide is become unsymmetric structure by symmetrical structure, make it can be directly and the integrated multi-beam antenna of substrate of the integrated formation miniaturization of antenna array.The multi-mode substrate integration waveguide both sides of existing symmetry link to each other with four groups of substrate integration wave-guides respectively; Form two interfaces; When electromagnetic wave can produce discontinuity when any input port propagates into first interface; Generate the mode of operation of a plurality of quadratures and be transferred to second interface, synthetic four the tunnel have required amplitude, PHASE DISTRIBUTION electromagnetic wave, along the phase shift of four tunnel inputs, four tunnel outputs connect network with four groups independently antenna link to each other; Be independent of each other between the multi-mode substrate integration waveguide of said antenna and symmetry, the two only needs independent design and splicing to get final product.And the asymmetrical multi-mode substrate integration waveguide of present embodiment only a side link to each other with four groups of substrate integration wave-guides; Form interface; When electromagnetic wave can produce discontinuity when any input port propagates into this interface, realize changes in amplitude, the mode of operation that generates a plurality of quadratures is propagated in asymmetrical multi-mode substrate integration waveguide; And realization phse conversion; The opposite side of asymmetrical multi-mode substrate integration waveguide can be regarded a port as, when electromagnetic wave propagation can not synthesize four road electromagnetic waves to here the time, but directly radiate through antenna array.Viewpoint from microwave network; The characteristic of the multi-mode substrate integration waveguide of symmetry needs to be described by the collision matrix of three cascades; The collision matrix that comprises the multi-mode substrate integration waveguide between two interfacial collision matrixes and two interfaces; The characteristic of asymmetric multi-mode substrate integration waveguide is only described by the collision matrix of two cascades, comprises the collision matrix of the multi-mode substrate integration waveguide between interfacial collision matrix and interface and the antenna array, and both have different physical models; But realize close circuit function; Therefore, the asymmetrical multi-mode substrate integration waveguide that designs according to the method for designing (only need design to a wave beam sequence number) of the multi-mode substrate integration waveguide of symmetry can't operate as normal, must carry out similar design to remaining N-1 wave beam sequence number; And N separated to carry out compatibility approximate, more strict for the size design requirement of asymmetrical multi-mode substrate integration waveguide in other words; But also just because of this; Output at asymmetrical multi-mode substrate integration waveguide has just possessed direct ability to the antenna array feed; The second interfacial four groups of substrate integration wave-guides that need not to re-use the multi-mode substrate integration waveguide of symmetry are connected network with phase shift accordingly; This just effectively reduces the circuit volume, simplifies circuit structure.In addition, owing to directly link to each other between antenna array and the asymmetric multi-mode substrate integration waveguide, the two influences each other, and therefore after the design of the multi-mode substrate integration waveguide of the right title of completion, need optimize the size of antenna again.
Basic scheme with present embodiment experimentizes as design example, the design of the integrated multi-beam antenna of miniaturization multi-mode substrate, processing and a test at centre frequency 33.5GHz place, and increased the transition of microstrip substrate integrated waveguide so that test.The dielectric substrate dielectric constant of selecting for use is 2.2, thickness 0.5mm, and loss angle tangent is 0.0009.The diameter of selected plated-through hole is 0.4mm, and spacing is 0.8mm.Test result shows that in the scope of 31GHz～36GHz, return loss and isolation are superior to 10dB basically; At 33.5GHz, port a feed can generate the half power lobe width and be 26.6 °, the wave beam of 29.2 ° of beam positions, gain 8.3dBi (comprising extra transition structure); At 35.5GHz, port b feed can generate the half power lobe width and is 19.7 °, wave beam and give directions 9.0 °, the wave beam of gain 9.7dBi (comprising extra transition structure); At 35.5GHz, respectively from port a, port b, port c, port d feed, can generate four and point to different wave beams, cover 76 ° space angle with its half power lobe width.
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present invention, should to be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from essence of the present invention according to these teachings disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (1)
1. the integrated multi-beam antenna of miniaturization substrate; Comprise that the metal that stacks gradually from top to bottom covers copper upper strata (1), dielectric layer (3), metal and covers copper lower floor (2); It is characterized in that; Said metal cover copper upper strata (1) comprise from input to table section (11) on the feed that spoke side is arranged in order, with feed on table section (12) on the multimode that is connected of table section (11), with multimode on table section (13) on the N group triangle that is connected of table section (12); Said metal cover copper lower floor (2) comprise from input to table section (21) under the feed that spoke side is arranged in order, with feed under table section (22) under the multimode that is connected of table section (21), with multimode under table section (23) under the N group triangle that is connected of table section (22); Has N+1 row plated-through hole (31) in the said dielectric layer (3); Said plated-through hole (31) has run through that table section (21) is connected under table section on the feed (11) and dielectric layer (3) and the feed; Form N line feed substrate integration wave-guide, run through that table section (22) is connected under table section on the multimode (12) and dielectric layer (3) and the multimode, form one road asymmetrical multi-mode substrate integration waveguide; On said dielectric layer (3) and the N group triangle that is positioned at its both sides under table section (13) and the N group triangle table section (23) form antenna array, both mirror images of table section (23) are symmetrical under table section on the said triangle (13) and the triangle.
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| CN201110262019.XA CN102324627B (en) | 2011-09-06 | 2011-09-06 | Miniaturization substrate integrated multi-beam antenna |
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| CN201110262019.XA CN102324627B (en) | 2011-09-06 | 2011-09-06 | Miniaturization substrate integrated multi-beam antenna |
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| CN103618147A (en) * | 2013-11-29 | 2014-03-05 | 东南大学 | Thin-substrate phase amplitude correction slot line plane horn antenna |
| CN103594805B (en) * | 2013-11-29 | 2016-03-30 | 东南大学 | Thin substrate amplitude correction slot-line difference-beam planar horn antenna |
| CN103594810A (en) * | 2013-11-29 | 2014-02-19 | 东南大学 | Thin-substrate amplitude correction oscillator planar horn antenna |
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