CN102324627B - Miniaturization substrate integrated multi-beam antenna - Google Patents
Miniaturization substrate integrated multi-beam antenna Download PDFInfo
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- CN102324627B CN102324627B CN201110262019.XA CN201110262019A CN102324627B CN 102324627 B CN102324627 B CN 102324627B CN 201110262019 A CN201110262019 A CN 201110262019A CN 102324627 B CN102324627 B CN 102324627B
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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 51
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 10
- 230000010363 phase shift Effects 0.000 description 9
- 238000007493 shaping process Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method 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
- 230000008569 process Effects 0.000 description 2
- 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
- 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
- 238000012545 processing 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 microwave and millimeter wave antenna technical field, particularly a kind of multi-beam antenna of substrate integrated wave-guide.
Background technology
As the one of smart antenna, multi-beam antenna can generate multiple different wave beams that point to, and can select wave beam to aim at useful signal direction, disturbs thereby reduce, and increases system channel capacity, has therefore obtained in high-rate wireless communication field widely and has paid close attention to.
Up to the present, researcher is based on multiple guided wave structure formed several dissimilar multi-beam antennas of having realized such as microstrip line, metal waveguide, substrate integration wave-guides.Wherein, the multi-beam antenna being made up of substrate integration wave-guide has advantages of that metal loss is low, radiation mutual coupling is low, Integration Design is easy, processing cost is low, favorable repeatability, be easy to large-scale production, the problem that has solved preferably the integrated and critical component Wave-packet shaping network complanation of multi-beam antenna has obvious advantage in the time that operating frequency is higher.
But 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 forms by three subdivisions, i.e. Wave-packet shaping network, antenna array and the phase shift interconnection network between the two.For multi-beam antenna of substrate integrated wave-guide miniaturization, a kind of good solution is proposed at present; as shown in Figure 1; this multi-beam antenna is still made up of three subdivisions; be symmetrical multi-mode substrate integration waveguide, antenna array and the phase shift interconnection network between the two, wherein symmetrical multi-mode substrate integration waveguide is the key technology that realizes multi-beam antenna miniaturization as Wave-packet shaping network.This symmetry multi-mode substrate integration waveguide is eight symmetrical port organizations; there are four input ports and four output ports; during from different input port input signal; can generate constant amplitude and there is certain phase difference Si road output signal at four output ports; input four groups of antenna elements through phase shift interconnection network, the final wave beams that generate different sensings.This structure can be dwindled traditional Wave-packet shaping network---the half of butler matrix area.
In the application for a patent for invention that the number of patent application of inventor's application is CN200810022648.3, disclose a kind of multi-mode substrate integration waveguide beam shaping network, 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 above-mentioned phase shift interconnection network).In the time using this multi-mode substrate integration waveguide beam shaping network and antenna array to be connected to form substrate integrated multi-beam antenna, wherein must contain 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, therefore design is complicated, and volume is bigger than normal.
Summary of the invention
The object of the invention is, in order to overcome existing multi-beam antenna of substrate integrated wave-guide circuit structure area deficiency bigger than normal, to have proposed a kind of Miniaturized substrate integrated multi-beam antenna.
To achieve these goals, technical scheme of the present invention is: a kind of Miniaturized substrate integrated multi-beam antenna, comprise that the metal stacking gradually from top to bottom covers copper upper strata, dielectric layer, metal Fu Tong lower floor, it is characterized in that, described metal covers copper upper strata and comprises table section the feed being arranged in order to spoke side from input, table section in the multimode being connected with table section on feed, table section on the N group triangle being connected with table section in multimode, described metal Fu Tong lower floor comprises table section the feed being arranged in order to spoke side from input, with table section under the multimode of feed following table joint area, organize table section under triangle with the N of multimode following table joint area, in described dielectric layer, there is N+1 row plated-through hole, described plated-through hole has run through table section and dielectric layer and feed following table joint area on feed, form N line feed substrate integration wave-guide, table section and dielectric layer and multimode following table joint area in multimode are run through, form an asymmetrical multi-mode substrate integration waveguide in road, described dielectric layer be positioned on the N group triangle of its both sides table section under table section and N group triangle and form antenna array, table section mirror image symmetry under table section and triangle on described triangle.
Beneficial effect of the present invention: because the symmetrical multi-mode substrate integration waveguide in existing multi-beam antenna of substrate integrated wave-guide miniaturization scheme is become asymmetric structure by the present invention; make its can be directly and antenna array integrated; without re-using phase shift interconnection network; area and the structure complexity of circuit structure so just in the time realizing same circuit function, are reduced; make multi-beam antenna compact conformation, and therefore obtain higher radiation efficiency.
Accompanying drawing explanation
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 Miniaturized substrate integrated multi-beam antenna of the present invention.
Fig. 3 is the tomograph of Miniaturized substrate integrated multi-beam antenna of the present invention.
Fig. 4 is the plan structure figure of Miniaturized substrate integrated multi-beam antenna of the present invention.
Fig. 5 is the circuit structure diagram that the metal of Miniaturized substrate integrated multi-beam antenna of the present invention covers copper upper strata.
Fig. 6 is the circuit structure diagram of the metal Fu Tong lower floor of Miniaturized substrate integrated multi-beam antenna of the present invention.
Embodiment
As Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6, a kind of Miniaturized substrate integrated multi-beam antenna, comprise that the metal stacking gradually from top to bottom covers copper upper strata 1, dielectric layer 3, metal Fu Tong lower floor 2, in order to form Miniaturized substrate integrated multi-beam antenna of the present invention, by printed-circuit board manufacturing technology, metal is covered to copper upper strata 1, metal Fu Tong lower floor 2 is processed to form required metal pattern (circuit structure), in this pattern, between each several part, divide by virtual chain-dotted line, dielectric layer 3 is punched and surface metalation done in hole and process formation plated-through hole 31, described metal covers table section 11 on the feed that copper upper strata 1 comprises that from input to spoke side (Fig. 5 from right to left) be arranged in order, table section 12 in the multimode being connected with table section on feed 11, table section 13 on four groups of triangles that are connected with table section in multimode 12, described metal Fu Tong lower floor 2 comprises from input to spoke side table section 21 under the feed that (Fig. 6 from right to left) be arranged in order, table section 22 under the multimode being connected with table section under feed 21, table section 23 under four groups of triangles that are connected with table section under multimode 22, in described dielectric layer 3, there are five row's plated-through holes 31, wherein, three row's length are identical, outside two row's length are longer, described plated-through hole 31 has run through table section 11 on feed and has been connected with table section under feed 21 with dielectric layer 3, form four line feed substrate integration wave-guides, having run through table section 12 in multimode is connected with table section under multimode 22 with dielectric layer 3, form an asymmetric multi-mode substrate integration waveguide in road, described dielectric layer 3 be positioned on four groups of triangles of its both sides table section 23 under table section 13 and four groups of triangles and form antenna array, table section 23 both mirror image symmetries under table section 13 and triangle on described triangle.
Those of ordinary skill in the art is to be appreciated that, on the row of plated-through hole 31 and triangle, under table section 13 and triangle, the quantity of table section 23 is to be determined by the way (the input port quantity of multi-beam antenna) of feed substrate integration wave-guide, the input port quantity of multi-beam antenna equals the quantity with the different wave beams that point to that multi-beam antenna generates, therefore, although specific embodiments of the invention adopt four road input ports and five row's plated-through holes 31, but not affecting those of ordinary skill in the art adopts the technical program to implement the multi-beam antenna of other N road (N is more than or equal to two natural number) 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 by substrate integration wave-guide the structures such as microstrip line, co-planar waveguide, metal waveguide, coaxial line; 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 multiple 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 the 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 is directly connected with antenna array, emittance, and on triangle, under table section 13 and triangle, the size of table section 23 also needs to be optimized to obtain better performance.
The scheme of the present embodiment is with respect to existing technical scheme (disclosed a kind of multi-mode substrate integration waveguide beam shaping network in the application for a patent for invention that the number of patent application of applying for as the inventor is CN200810022648.3); multi-mode substrate integration waveguide is become to unsymmetric structure from symmetrical structure, make it can be directly and the substrate integrated multi-beam antenna of the integrated formation miniaturization of antenna array.The multi-mode substrate integration waveguide both sides of existing symmetry are connected with four groups of substrate integration wave-guides respectively, form two interfaces, when electromagnetic wave can produce discontinuity in the time that any input port propagates into first interface, generate multiple orthogonal mode of operations and be transferred to second interface, synthetic four tunnels have required amplitude, the electromagnetic wave of PHASE DISTRIBUTION, the input of Yan Si road, the phase shift interconnection network of four tunnels outputs with four groups independently antenna be connected, between described antenna and symmetrical multi-mode substrate integration waveguide, be independent of each other, the two only needs independent design splicing.And the asymmetrical multi-mode substrate integration waveguide of the present embodiment only a side be connected with four groups of substrate integration wave-guides; form interface; when electromagnetic wave can produce discontinuity in the time that any input port propagates into this interface; realize changes in amplitude; generate multiple orthogonal mode of operations propagates in asymmetrical multi-mode substrate integration waveguide; and realize 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 herein time, but directly radiate by antenna array.From the viewpoint of microwave network, the characteristic of symmetrical multi-mode substrate integration waveguide need be described by the collision matrix of three cascades, comprise the collision matrix of 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, comprise the collision matrix of the multi-mode substrate integration waveguide between interfacial collision matrix and interface and antenna array, both have different physical models, but realize close circuit function, therefore, the asymmetrical multi-mode substrate integration waveguide designing according to the method for designing of symmetrical multi-mode substrate integration waveguide (only need design for a wave beam sequence number) cannot normally be worked, must carry out similar design for N-1 wave beam sequence number of residue, and it is approximate that N solution carried out to compatibility, require more strict for the size design of asymmetrical multi-mode substrate integration waveguide in other words, but also just because of this, just possesses the directly ability to antenna array feed at the output of asymmetrical multi-mode substrate integration waveguide, without the second interfacial four groups of substrate integration wave-guides that re-use symmetrical multi-mode substrate integration waveguide and corresponding phase shift interconnection network, this just effectively reduces circuit volume, simplifies circuit structure.In addition, owing to being directly connected between antenna array and asymmetric multi-mode substrate integration waveguide, the two influences each other, and therefore, after the design of multi-mode substrate integration waveguide that completes right title, need to again optimize the size of antenna.
Basic scheme using the present embodiment is tested as design example, and a miniaturization multi-mode substrate integrated multi-beam antenna designs at centre frequency 33.5GHz place, processes and test, and has increased the transition of microstrip substrate integrated waveguide so that test.The dielectric substrate dielectric constant of selecting 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, in the scope of 31GHz～36GHz, return loss and isolation are better than 10dB substantially; At 33.5GHz, port a feed, can generate 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 half power lobe width and be 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 the space angle of 76 ° 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 be understood to 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 depart from essence of the present invention according to these technology enlightenments disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (1)
1. Miniaturized substrate integrated multi-beam antenna, comprise that the metal stacking gradually from top to bottom covers copper upper strata (1), dielectric layer (3), metal Fu Tong lower floor (2), it is characterized in that, described metal covers copper upper strata (1) and comprises table section the feed being arranged in order to spoke side from input (11), table section (12) in the multimode being connected with table section on feed (11), table section (13) on four groups of triangles that are connected with table section in multimode (12), described metal Fu Tong lower floor (2) comprises table section the feed being arranged in order to spoke side from input (21), table section (22) under the multimode being connected with table section under feed (21), table section (23) under four groups of triangles that are connected with table section under multimode (22), in described dielectric layer (3), there are five row's plated-through holes (31), described plated-through hole (31) has run through table section on feed (11) and has been connected with table section under feed (21) with dielectric layer (3), form four line feed substrate integration wave-guides, having run through table section in multimode (12) is connected with table section under multimode (22) with dielectric layer (3), form an asymmetrical multi-mode substrate integration waveguide in road, described dielectric layer (3) be positioned on four groups of triangles of its both sides table section (23) formation antenna array under table section (13) and four groups of triangles, both mirror image symmetries of table section (23) under table section on described triangle (13) and triangle,
Described five row's plated-through holes (31) are arranged in parallel, wherein, the length of three row's plated-through holes is identical, the length of outside two row's plated-through holes is identical and longer than middle three row's plated-through holes, every adjacent two row's plated-through holes form an input channel, thereby form four groups of parallel input channels, the two ends of described input channel are respectively input port and output port, and described output port is directly connected with antenna array.
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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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| CN103594805B (en) * | 2013-11-29 | 2016-03-30 | 东南大学 | Thin substrate amplitude correction slot-line difference-beam planar horn antenna |
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| CN103594815B (en) * | 2013-11-29 | 2015-10-28 | 东南大学 | Thin substrate surface of oscillator horn antenna |
| CN103594816B (en) * | 2013-11-29 | 2015-08-19 | 东南大学 | Thin substrate phasing slot-line planar horn antenna |
| CN103594814B (en) * | 2013-11-29 | 2016-03-23 | 东南大学 | Thin substrate phasing surface of oscillator horn antenna |
| CN103618147B (en) * | 2013-11-29 | 2016-06-08 | 东南大学 | Thin substrate phase amplitude correction slot-line planar horn antenna |
| CN103594810B (en) * | 2013-11-29 | 2016-03-23 | 东南大学 | Thin substrate amplitude correction surface of oscillator horn antenna |
| CN103606750B (en) * | 2013-11-29 | 2016-03-23 | 东南大学 | The accurate Yagi spark gap planar horn antenna of thin substrate phasing |
| CN103594806B (en) * | 2013-11-29 | 2016-03-30 | 东南大学 | Thin substrate amplitude correction slot-line planar horn antenna |
| CN103606751B (en) * | 2013-11-29 | 2015-11-18 | 东南大学 | Thin substrate quasi-yagi difference beam plane horn antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050219126A1 (en) * | 2004-03-26 | 2005-10-06 | Automotive Systems Laboratory, Inc. | Multi-beam antenna |
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| CN1949590A (en) * | 2006-10-27 | 2007-04-18 | 东南大学 | Substrate integrated waveguide comb-shaped power distributor |
| CN201204258Y (en) * | 2008-05-27 | 2009-03-04 | 东南大学 | Millimeter wave base-sheet integrated waveguide multibeam antenna |
| CN101325273A (en) * | 2008-07-18 | 2008-12-17 | 东南大学 | Multi-mode substrate integration waveguide beam shaping network |
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