CN203326117U - Compact-structure 16-element broadband substrate integration waveguide back chamber antenna array - Google Patents
Compact-structure 16-element broadband substrate integration waveguide back chamber antenna array Download PDFInfo
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- CN203326117U CN203326117U CN2013203745939U CN201320374593U CN203326117U CN 203326117 U CN203326117 U CN 203326117U CN 2013203745939 U CN2013203745939 U CN 2013203745939U CN 201320374593 U CN201320374593 U CN 201320374593U CN 203326117 U CN203326117 U CN 203326117U
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Abstract
The utility model relates to a compact-structure 16-element broadband substrate integration waveguide back chamber antenna array. The compact-structure 16-element broadband substrate integration waveguide back chamber antenna array comprises a medium substrate of which two surfaces are covered by metal layers, the medium substrate is provided with substrate integration waveguide back chambers which are formed by metalized through-holes and are distributed according to a 2*2 array, each substrate integration waveguide back chamber is respectively provided with substrate integration waveguide sub back chambers which are formed by metalized through-holes and are distributed according to a 2*2 array, a center of the 2*2 array of the substrate integration waveguide back chambers distributed according to the 2*2 array and a geometric center of each substrate integration waveguide back chamber are respectively provided with an inductive coupling window. Separation of radiation frequency of gaps and resonant frequency of the chambers is realized by adjusting offset amount from the gaps to centers of the substrate integration waveguide back chambers to realize co-phase radiation of 16 gaps, radiation gain is superposed, and a greatest gain direction is right above.
Description
Technical field
The utility model patent relates to a kind of broadband cavity-backed radiator antenna battle array of compact conformation, relates in particular to a kind of 16 yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays of compact conformation.
Background technology
Substrate integration wave-guide (SIW) is due to himself low section, and low-loss is easy to be widely used in microwave, millimetric wave device with advantages such as circuit are coplanar.In recent years, many antennas based on substrate integrated wave guide structure have appearred, chip integrated waveguide slot antenna array for example, substrate integrated waveguide back cavity antenna and array thereof etc.The substrate integrated waveguide back cavity antenna has low section, and high radiance is easy to the advantages such as design.But the low section of substrate integration wave-guide has determined its high Q value, and the Q value is higher, and the bandwidth of antenna is narrower.The bandwidth of broadening substrate integrated waveguide back cavity antenna has become a study hotspot.Traditional substrate integrated waveguide back cavity antenna array is comprised of two parts, and feeding network part and radiating element part, need the special feeding network of design to carry out feed, and this has not only increased the area of antenna array, and design is complicated.How to reduce the area of antenna array feeding network and a great problem that complexity becomes large-scale Array Design.
The utility model content
The purpose of this utility model is 16 yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays that propose a kind of compact conformation, this antenna array not only has all advantages of substrate integrated waveguide back cavity antenna, and do not need special feeding network, be of compact construction and wider impedance bandwidth.
For realizing above purpose, the technical solution adopted in the utility model is as follows:
A kind of 16 yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays of compact conformation, comprise: the two-sided dielectric substrate that is covered with metal level, be provided with the substrate integrated waveguide back cavity according to the 2*2 array distribution formed by plated-through hole on dielectric substrate, be respectively equipped with the back of the body of the substrate integration wave-guide according to the 2*2 array distribution chamber formed by plated-through hole in each substrate integrated waveguide back cavity, on the geometric center of the 2*2 array center of the substrate integrated waveguide back cavity of 2*2 array distribution and each substrate integrated waveguide back cavity, be respectively equipped with inductive coupled window.
This antenna array is comprised of 16 tight connected substrate integration wave-guide back of the body chambeies, adopts coaxial probe at antenna array center feed.Energy, by the coupling mutually in 16 chambeies of 5 inductive coupled windows, reaches resonance.At each substrate integrated waveguide back cavity upper surface, crack as radiating element, radiating slot departs from the cavity center, forms inphase radiations.Back of the body chamber, both as radiating element, itself is again feeding network simultaneously, and the antenna array structure of this novelty does not need additional feeding network, and structure is very compact, and this technology is applicable to the design of large-sized array array antenna very much.Realize that apart from the side-play amount at center, substrate integration wave-guide chamber the radiation frequency in gap separates with the resonance frequency in chamber by adjusting gap, thereby realize 16 gap inphase radiations, the radiation gain stack, and directly over maximum gain direction is.Improve the impedance bandwidth of antenna array by the width of adjusting gap.Adopt coaxial probe directly to the cavity feed, do not need feeding network, compact conformation, simplicity of design.
Beneficial effect:
The advantages such as the beneficial effects of the utility model are, antenna array not only has general substrate integrated waveguide back cavity antenna low section, low-loss, be easy to circuit is integrated, and do not need feeding network, simple in structure, compact.Broadening is more than one times for the general cavity-backed radiator antenna of its bandwidth ratio (only having 5% left and right) simultaneously, and impedance bandwidth reaches 12%.Have benefited from the low loss characteristic of substrate integration wave-guide, these 16 yuan of antenna arrays have advantages of high-gain, and maximum gain reaches 17.3dB.
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The accompanying drawing explanation
Fig. 1 is Facad structure schematic diagram of the present utility model.In figure, 1 is substrate integrated waveguide back cavity, by plated-through hole, is surrounded, and 2 is radiating slot, and 3 is inductive coupled window, and 4 coaxial probes, in antenna array centre feed.
Fig. 2 is cross-sectional view of the present utility model.In figure, 4 is coaxial probe.
Fig. 3 is that the utility model antenna array return loss changes schematic diagram with side-play amount.
Fig. 4 is that the utility model antenna array return loss changes schematic diagram with gap width.
Fig. 5 is the artificial echo loss schematic diagram of the utility model antenna array.
Fig. 6 is the simulated gain schematic diagram of the utility model antenna array.
Fig. 7 is the E face emulation directional diagram of the utility model antenna array.
Fig. 8 is the H face emulation directional diagram of the utility model antenna array.
Embodiment
A kind of 16 yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays of compact conformation, comprise: the two-sided dielectric substrate that is covered with metal level, be provided with the substrate integrated waveguide back cavity according to the 2*2 array distribution formed by plated-through hole on dielectric substrate, be respectively equipped with the back of the body of the substrate integration wave-guide according to the 2*2 array distribution chamber 1 formed by plated-through hole in each substrate integrated waveguide back cavity, on the geometric center of the 2*2 array center of the substrate integrated waveguide back cavity of 2*2 array distribution and each substrate integrated waveguide back cavity, be respectively equipped with inductive coupled window 3.In the present embodiment, be provided with the center that radiating slot 2 and radiating slot 2 depart from substrate integration wave-guide back of the body chamber 1 in each substrate integration wave-guide back of the body chamber 1, in the 2*2 array center of the substrate integrated waveguide back cavity of 2*2 array distribution, be provided with coaxial probe 4.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
This antenna array forms 16 yuan of antenna arrays by 16 tight connected substrate integrated waveguide back cavities 1.Substrate integrated waveguide back cavity is surrounded by plated-through hole, forms a kind of integrated waveguiding structure that is easy to of low section.By 5 inductive coupled windows 3, by 16 chamber intercommunications, energy can be resonated in all chambeies.Center at antenna array adopts coaxial probe 4 feeds, and as shown in Figure 1, energy just can be symmetrical like this, arrives uniformly in each substrate integration wave-guide chamber, and form resonance.Back of the body chamber, both as radiating element, itself is also feeding network simultaneously, and the antenna array structure of this novelty does not need additional feeding network, and structure is very compact, and this technology is applicable to the design of large-sized array array antenna very much.At each substrate integrated waveguide back cavity upper surface, crack as radiating element.In order to realize inphase radiations, realize that apart from the side-play amount at center, substrate integration wave-guide chamber the radiation frequency in gap separates with the resonance frequency in chamber by adjusting gap, can make like this each gap electric current on every side keep homophase, thereby reach radiation gain stack, and the purpose of maximum gain direction directly over being.As shown in Figure 3, along with the increase of side-play amount, the radiation frequency in gap separates with the resonance frequency of cavity the curve that return loss changes with side-play amount gradually, when side-play amount is the 2mm left and right, is with widely, matches.By increasing the width in gap, optimize the length-width ratio in gap, thus the impedance bandwidth of broadening antenna array.The curve that return loss changes with gap width as shown in Figure 4, along with gap broadens, the broadened bandwidth of antenna, when gap width reaches 2mm, width increases again, the impedance matching meeting worsens.As shown in Figure 5, at 19GHz, to be less than-10dB of return loss in the frequency range of 21.4GHz, the antenna impedance bandwidth reaches 12% to return loss plot after final optimization pass, more than the twice for general back of the body chamber slot antenna.The gain curve of antenna array as shown in Figure 6, has benefited from the low loss characteristic of substrate integration wave-guide, and these 16 yuan of antenna arrays have advantages of high-gain, and maximum gain reaches 17.3dB.The normalization E face of antenna array and H face directional diagram curve are as shown in Figure 7,8.E face half beam width is 18
0, maximum secondary lobe is less than-14 dB, and H face half wave beam is 20
0, maximum secondary lobe is less than-18 dB, directly over the greatest irradiation direction is.
Structurally, the size in substrate integration wave-guide back of the body chamber 1 determines whole antenna array working range roughly, the length of radiating slot 2 determines the operating frequency of antenna array, and inphase radiations can be realized in the position of adjusting gap, adjusts the bandwidth that the width in gap can the broadening antenna array.The size of inductive coupled window 3 is all influential to a lot of performances of whole antenna.Coupling window is larger, and the Q value of cavity is lower, and the bandwidth of antenna array will broadening like this, if but the excessive coupling that will affect whole antenna array of coupling window worsens return loss, and energy can not well radiate.
On manufacturing, this antenna array realizes on the high frequency laminate of a 5mm * 5mm, and dielectric-slab thickness is 1.5mm, and dielectric constant is 2.2.Realize substrate integrated wave guide structure by beat plated-through hole on dielectric-slab, substrate integration wave-guide back of the body chamber 1 is surrounded by plated-through hole.Feed partly adopts coaxial probe 4 in antenna array centre feed, because the antenna array operating frequency is in about 20GHz, frequency is higher, in order to guarantee the high-performance of antenna array, so adopt the high-frequency joint feed.The dielectric-slab upper and lower surface is covered copper, and radiating slot 2, as radiating element, will cover the copper partial corrosion and fall.Because copper is placed in air for a long time, easily oxidized, in order to guarantee antenna, use for a long time, can adopt zinc-plated technology zinc-plated in the outside of copper sheet.
According to the above, just can realize the utility model.
Claims (3)
1. 16 of a compact conformation yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays, comprise: the two-sided dielectric substrate that is covered with metal level, it is characterized in that, be provided with the substrate integrated waveguide back cavity according to the 2*2 array distribution formed by plated-through hole on dielectric substrate, be respectively equipped with of the substrate integration wave-guide according to the 2*2 array distribution back of the body chamber (1) formed by plated-through hole in each substrate integrated waveguide back cavity, be respectively equipped with inductive coupled window (3) on the geometric center of the 2*2 array center of the substrate integrated waveguide back cavity of 2*2 array distribution and each substrate integrated waveguide back cavity.
2. 16 of compact conformation according to claim 1 yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays, it is characterized in that, be provided with the center that radiating slot (2) and radiating slot (2) depart from substrate integration wave-guide back of the body chamber (1) in each substrate integration wave-guide back of the body chamber (1).
3. 16 of compact conformation according to claim 1 and 2 yuan of broad-band chip integrated waveguide cavity-backed radiator antenna battle arrays, is characterized in that, in the 2*2 array center of the substrate integrated waveguide back cavity of 2*2 array distribution, is provided with coaxial probe (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203745939U CN203326117U (en) | 2013-06-27 | 2013-06-27 | Compact-structure 16-element broadband substrate integration waveguide back chamber antenna array |
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| CN2013203745939U CN203326117U (en) | 2013-06-27 | 2013-06-27 | Compact-structure 16-element broadband substrate integration waveguide back chamber antenna array |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577349A (en) * | 2015-01-30 | 2015-04-29 | 南通大学 | High out-of-band rejection cavity filter antenna array |
| CN104716426A (en) * | 2013-12-13 | 2015-06-17 | 华为技术有限公司 | Array antenna |
| CN106505316A (en) * | 2016-12-30 | 2017-03-15 | 广东盛路通信科技股份有限公司 | A kind of multilayer planar aerial array |
| CN108598696A (en) * | 2018-04-20 | 2018-09-28 | 西安电子科技大学 | A kind of high-gain millimeter wave circular polarization medium resonator array antenna |
| CN109478716A (en) * | 2016-12-30 | 2019-03-15 | 华为技术有限公司 | Antenna |
| CN109818158A (en) * | 2019-03-13 | 2019-05-28 | 东南大学 | A kind of broadband SIW back chamber slot antenna array using L shape slot element |
| CN114267938A (en) * | 2021-12-07 | 2022-04-01 | 重庆邮电大学 | Broadband high-gain back cavity arched patch slotted array antenna based on substrate integrated coaxial line |
| CN114284738A (en) * | 2020-09-28 | 2022-04-05 | 联发科技股份有限公司 | Antenna structure and antenna package |
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2013
- 2013-06-27 CN CN2013203745939U patent/CN203326117U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9893433B2 (en) | 2013-12-13 | 2018-02-13 | Huawei Technologies Co., Ltd. | Array antenna |
| CN104716426A (en) * | 2013-12-13 | 2015-06-17 | 华为技术有限公司 | Array antenna |
| CN104577349A (en) * | 2015-01-30 | 2015-04-29 | 南通大学 | High out-of-band rejection cavity filter antenna array |
| CN104577349B (en) * | 2015-01-30 | 2017-08-01 | 中天宽带技术有限公司 | High out-of-side rejection cavity filter antenna array |
| CN109478716A (en) * | 2016-12-30 | 2019-03-15 | 华为技术有限公司 | Antenna |
| CN106505316A (en) * | 2016-12-30 | 2017-03-15 | 广东盛路通信科技股份有限公司 | A kind of multilayer planar aerial array |
| CN109478716B (en) * | 2016-12-30 | 2020-08-25 | 华为技术有限公司 | Antenna with a shield |
| CN106505316B (en) * | 2016-12-30 | 2021-06-25 | 广东盛路通信科技股份有限公司 | Multilayer planar antenna array |
| CN108598696A (en) * | 2018-04-20 | 2018-09-28 | 西安电子科技大学 | A kind of high-gain millimeter wave circular polarization medium resonator array antenna |
| CN109818158A (en) * | 2019-03-13 | 2019-05-28 | 东南大学 | A kind of broadband SIW back chamber slot antenna array using L shape slot element |
| CN109818158B (en) * | 2019-03-13 | 2020-09-11 | 东南大学 | Broadband SIW back-cavity slot antenna array adopting L-shaped slot units |
| CN114284738A (en) * | 2020-09-28 | 2022-04-05 | 联发科技股份有限公司 | Antenna structure and antenna package |
| CN114267938A (en) * | 2021-12-07 | 2022-04-01 | 重庆邮电大学 | Broadband high-gain back cavity arched patch slotted array antenna based on substrate integrated coaxial line |
| CN114267938B (en) * | 2021-12-07 | 2023-08-01 | 重庆邮电大学 | Broadband high-gain back cavity arch patch slotted array antenna based on substrate integrated coaxial line |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140627 |
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| EXPY | Termination of patent right or utility model |