CN101183742B - Rectangle substrate integrated waveguide back cavity linear polarization antenna - Google Patents
Rectangle substrate integrated waveguide back cavity linear polarization antenna Download PDFInfo
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- CN101183742B CN101183742B CN2007101568214A CN200710156821A CN101183742B CN 101183742 B CN101183742 B CN 101183742B CN 2007101568214 A CN2007101568214 A CN 2007101568214A CN 200710156821 A CN200710156821 A CN 200710156821A CN 101183742 B CN101183742 B CN 101183742B
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Abstract
The invention relates to a polarized antenna with wave guiding cavity-backed lines integrated on a rectangular substrate. The traditional polarized antenna has the disadvantages of low performance of single radiation unit, large bulk, complex structure and high manufacturing cost. The dielectric substrate of the invention is plated with metallic layers on two sides; the upper metallic layer is etched with a microstrip line for feeding and a plurality of coplanar wave guiding transmission lines; the coplanar wave guiding transmission lines are grounded coplanar wave guiding structure, wherein, the metallic strip in the middle is extended outwards to form the microstrip line. A plurality of metallized through holes, which are arrayed as a square, are penetrated through the upper metallic layer, the medium substrate and the lower metallic layer to form the cavity; the coplanar wave guiding transmission lines are extended into the cavity. An elongated radiation slit is etched on the lower metallic layer corresponding to the cavity. The invention has the advantages that: by adopting the general PCB technology, the production cost is notablely decreased and the invention can be integrated with the microstrip circuit without seam, the integrity of the system is improved; compared with the exact machining of the traditional cavity-backed antennas, the manufacture speed is high and the cost is low.
Description
Technical field
The invention belongs to microwave technical field, relate to a kind of rectangle substrate integrated waveguide back cavity linear polarization antenna that constitutes based on substrate integrated waveguide technology, can be used as the antenna of radio frequency receiving and transmitting front end, be widely used in wireless communication systems such as mobile communication, satellite communication, radar, be particularly suitable for a little less than the received signal, need the application scenario of high-gain aerial.
Background technology
As the critical component of communication system, antenna is widely used in the radio communication occasion.The quality of antenna performance has directly determined the performance of whole system.High performance antenna not only can significantly improve the performance of system, obtains good reception, can greatly alleviate the index pressure of follow-up radio circuit simultaneously, reduces the cost of system.Especially in application scenarios, space such as radar, satellites, be not only excellent radiance to the demand of antenna, and volume weight is also had strict restriction.Design has the easily conformal high performance antenna of low profile and is even more important under these occasions.
The implementation of traditional wire poliarizing antenna is varied, comprises element antenna, ring Shape antenna, slot antenna, aperture antenna and end-on-fire antenna or the like.Element antenna, ring Shape antenna etc. have making and simply are easy to advantages such as design, but the performance of the single radiating element of this type antenna is lower.Slot antenna comprises microstrip antenna and Waveguide slot antenna etc., and the antenna that wherein little band forms constitutes has the easily conformal advantage of low profile, be most widely used, but the performance of its single radiating element is also lower equally.The Waveguide slot slot antenna is applicable to the array antenna application, and single radiating element volume is little, forms the array volume compact, it is narrow that array antenna has main lobe width, directional diagram can figuration, the low good characteristic that waits of cross polarization level, and it is medium to be mainly used in the microwave and millimeter wave radar communications system.But the antenna volume that is based on the conventional metals guide technology is big, needs accurate mechanical processing technique could realize that given performance causes it with high costs, has limited its use on a large scale; The radiance of aperture antenna and end-on-fire antenna is all relatively good, but their volume is all bigger in actual applications, complex structure, and manufacturing cost is high.It is central in order to improve antenna radiation performance that back of the body cavity configuration often is applied to Antenna Design.But traditional back of the body chamber is made of smooth metallic cavity, the big processing cost height of volume.
Summary of the invention
The purpose of this invention is to provide a kind of rectangle substrate integrated waveguide back cavity linear polarization antenna that constitutes based on substrate integrated waveguide technology, this novel linear polarized antenna radiance is good, and gain is high, and volume is little, and is simple in structure, is easy to design, is easy to processing, and cost is low.This antenna and existing back cavity linear polarization antenna specific volume mutually reduce greatly, and manufacturing cost significantly reduces.
Rectangle substrate integrated waveguide back cavity linear polarization antenna of the present invention comprises dielectric substrate, and the two sides of dielectric substrate is coated with metal level, is respectively to go up metal level and lower metal layer, and wherein lower metal layer is as the stratum.Last metal level etching is useful on the microstrip line and the coplanar waveguide transmission line of feed, and coplanar waveguide transmission line is a common ground coplanar waveguide structure, and metal band stretches out in the middle of it, as microstrip line.Run through metal level, dielectric substrate and lower metal layer and have through hole, through-hole wall is coated with metal, forms plated-through hole.A plurality of plated-through hole sequence arrangement are square, form foursquare substrate integrated wave-guide cavity wave, the pitch of holes of the plated-through hole on each limit of substrate integrated wave-guide cavity wave is identical, coplanar waveguide transmission line stretches in the substrate integrated wave-guide cavity wave, the center line of its metal band and the central lines of substrate integrated wave-guide cavity wave.Etching has a strip radiating slot in the zone of the corresponding substrate integrated wave-guide cavity wave of lower metal layer, radiating slot is vertical with the metal band of coplanar waveguide transmission line centre, and based on the center line symmetry of metal band, the central point of radiating slot is at the center that is offset substrate integrated wave-guide cavity wave away from the direction of feed end.
The diameter of described plated-through hole less than the centre frequency of antenna work corresponding air wavelength 1/10th, the diameter of plated-through hole and substrate integrated wave-guide cavity wave with the ratio of the hole heart distance of last adjacent two plated-through holes on one side greater than 0.5.
Rectangle substrate integrated waveguide back cavity linear polarization antenna of the present invention is to be equivalent to the cavity body structure of traditional closed wire chamber by the manufacturing of employing substrate integrated waveguide technology on common dielectric substrate, thereby reduces the volume of cavity-backed radiator antenna greatly.With traditional cavity-backed radiator antenna need accurate machining different be that this new antenna can adopt common PCB technology to make, cost of manufacture significantly reduces, and can realize seamless integrated with microstrip circuit.Structurally, substrate is the dielectric substrate with double-sided metallic, to be interval with a series of metal through holes uniformly, forms the square substrates integral waveguide cavity that is equivalent to the conventional metals cavity on dielectric substrate.Metal level etches the microstrip line that is used for feed on double-sided metallic, by coplanar waveguide structure electromagnetic wave is introduced foursquare substrate integrated wave-guide cavity wave then.Etching has the strip slit in the corresponding substrate integrated wave-guide cavity wave of the lower metal layer zone of double-sided metallic, can emittance.
Concrete operation principle: electromagnetic wave is introduced in the square substrates integral waveguide cavity that is made of substrate integrated waveguide technology by coplanar waveguide transmission line by feed microstrip line again, thereby has encouraged the resonance of a plurality of patterns in the cavity.When cavity is in the second order mode of resonance, influence its field distribution hardly near etched strip slit, center at cavity.And this slit can cut the electric current of the single flow direction effectively, thereby thereby energy emission can be gone out and form antenna.This moment length by regulating the slit, cavity the length of side operating frequency that just can regulate antenna easily.
Beneficial effect: the rectangle substrate integrated waveguide back cavity linear polarization antenna that constitutes based on substrate integrated waveguide technology has the following advantages:
A. this novel back cavity linear polarization antenna has kept the good radiation characteristics such as high-gain of traditional metal cavity-backed radiator antenna, because comprising feeding network and cavity body structure, total can on dielectric substrate, realize simultaneously, make that not only antenna volume reduces greatly, and entire antenna can be seamless integrated with radio frequency receiving and transmitting front end and even the complete plane of whole system, improved the integrated level of system.
B. this novel back cavity linear polarization antenna is simple for structure, and operation principle is simple and clear.In design process, only need to regulate the distance on length, slit center line and coplanar waveguide transmission line top of radiating slot and the length of side of the square substrates integral waveguide cavity that constitutes by metal throuth hole and just can obtain needed performance.Structural parameters are few, the time that has shortened design greatly and optimized.
C. this novel back of the body chamber high-gain aerial is made simple and convenient, and total just can realize with common PCB technology.Need accurate machining to compare with traditional cavity-backed radiator antenna, manufacturing speed is fast, and is with low cost.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a perspective view of the present invention;
Fig. 3 is the metal-layer structure schematic diagram of going up of the present invention;
Fig. 4 is a lower metal layer structural representation of the present invention;
Fig. 5 is the return loss emulation of one embodiment of the invention and the comparison diagram of test result;
Fig. 6 is emulation testing result's the comparison diagram of the gain of one embodiment of the invention;
Fig. 7 is the test result figure of one embodiment of the invention antenna pattern when 9.92GHz;
Fig. 8 is the test result figure of one embodiment of the invention antenna pattern when 10GHz;
Fig. 9 is the test result figure of one embodiment of the invention antenna pattern when 10.09GHz.
Embodiment
As illustrated in fig. 1 and 2, rectangle substrate integrated waveguide back cavity linear polarization antenna comprises that thickness is 0.5 millimeter Rogers5880 dielectric substrate 1, and the two sides of dielectric substrate 1 is coated with metal level, is respectively to go up metal level 6 and lower metal layer 7, and wherein lower metal layer 7 is as the stratum.As Fig. 3, last metal level 6 etchings are useful on the microstrip line 2 and the coplanar waveguide transmission line 3 (frame of broken lines comprises part) of feed, and coplanar waveguide transmission line 3 is common ground coplanar waveguide structures, and metal band stretches out in the middle of it, as microstrip line 2.The length of microstrip line 2 and width are respectively 4 millimeters and 1.45 millimeters, and the width of two air gaps of coplanar waveguide transmission line 3 is 0.7 millimeter, and length is 12 millimeters.Running through metal level 6, dielectric substrate 1 and lower metal layer 7, to have diameter be 1 millimeter through hole, and through-hole wall is coated with metal, forms plated-through hole 4.A plurality of plated-through hole 4 sequence arrangement are that the length of side is 17.8 millimeters a square, form foursquare substrate integrated wave-guide cavity wave, and the pitch of holes of the plated-through hole 4 on each limit of substrate integrated wave-guide cavity wave is identical, are 1.5 millimeters.Coplanar waveguide transmission line 3 stretches in the substrate integrated wave-guide cavity wave, the center line of its metal band and the central lines of substrate integrated wave-guide cavity wave.As Fig. 4, etching has length and width to be respectively the strip radiating slot 5 of 11.3 millimeters and 1 millimeter in the zone of lower metal layer 7 corresponding substrate integrated wave-guide cavity waves, the vertical and intersectant centerline of the coplanar waveguide transmission line 3 of radiating slot 5 and feed, and based on center line in the length direction symmetry, the top distance of the center of radiating slot 5 and coplanar waveguide transmission line 3 is 1 millimeter, the central point of radiating slot 5 is positioned on the center line of substrate integrated wave-guide cavity wave, and away from 1 millimeter at the center of the direction of feed end skew substrate integrated wave-guide cavity wave.
The concrete structure geometric parameter is as follows:
L wherein
cBe the length of side of square substrates integral waveguide cavity, L
MsAnd W
MsBe respectively the length and the width of feed microstrip line, L
CpwAnd g
CpwBe respectively the length and the width in co-planar waveguide slit, L
sAnd W
sBe respectively the length and the width of radiating slot, d
sAnd d
CpwBe respectively the distance between feed end cavity wall and co-planar waveguide top and the slit center line, d is a through-hole diameter, d
pBe the hole heart distance of through hole, h is a substrate thickness.
| L ms(mm)L cpw(mm)d cpw(mm)L s(mm)d s(mm)d(mm) | ?4.0?12.0?1.0?11.3?10?1.0 | W ms(mm) g cpw(mm) L c(mm) W s(mm) h(mm) d p(mm) | ?1.45?0.7?17.8?1.0?0.5?1.5 |
The concrete manufacture process of this rectangle substrate integrated waveguide back cavity linear polarization antenna is: the substrate of at first choosing corresponding parameter, metal level etches microstrip line and the coplanar waveguide transmission line that is used for feed on substrate, suitable position etching is used for the strip slit of emittance on the lower metal layer of substrate then, on whole substrate, beat a series of metal through holes with uniform interval in place at last, constitute the edge square substrates integral waveguide cavity parallel with the slit around the slit.Select suitable aperture and pitch of holes, avoid the cavity self-energy outwards to reveal.This novel back cavity linear polarization antenna has kept the radiation characteristic of conventional metals cavity-backed radiator antenna high-gain.Select the length of side of the radiating slot and the square substrates integral waveguide cavity of suitable size, the operating frequency that can regulate this antenna easily.Entire antenna can be fully seamless integrated with radio frequency receiving and transmitting front end and even whole system fully by common PCB technology realization.
Fig. 5 is the test result of this linear polarized antenna performance to Fig. 9.The emulation of Fig. 5 and test result show this antenna emittance effectively in centre frequency is the working band of 10GHz.The emulation of Fig. 6 and test result show that all this antenna has the gain up to 5dBi in working band.No matter this antenna of the directional diagram test result of Fig. 7～9 surface still is that the H mask has good directionality at the E face in working band, the good radiation characteristic of low-cross polarization level etc.
Claims (2)
1. rectangle substrate integrated waveguide back cavity linear polarization antenna comprises dielectric substrate, it is characterized in that: the two sides of dielectric substrate is coated with metal level, is respectively to go up metal level and lower metal layer, and wherein lower metal layer is as the stratum; Last metal level etching is useful on the microstrip line and the coplanar waveguide transmission line of feed, and coplanar waveguide transmission line is a common ground coplanar waveguide structure, and metal band stretches out in the middle of it, as microstrip line; Run through metal level, dielectric substrate and lower metal layer and have through hole, through-hole wall is coated with metal, forms plated-through hole; A plurality of plated-through hole sequence arrangement are square, form foursquare substrate integrated wave-guide cavity wave, the pitch of holes of the plated-through hole on each limit of substrate integrated wave-guide cavity wave is identical, coplanar waveguide transmission line stretches in the substrate integrated wave-guide cavity wave, the center line of its metal band and the central lines of substrate integrated wave-guide cavity wave; Etching has a strip radiating slot in the zone of the corresponding substrate integrated wave-guide cavity wave of lower metal layer, radiating slot is vertical with the metal band of coplanar waveguide transmission line centre, and based on the center line symmetry of metal band, the central point of radiating slot is at the center that is offset substrate integrated wave-guide cavity wave away from the direction of feed end; Described substrate integrated wave-guide cavity wave works in the second order mode of resonance.
2. rectangle substrate integrated waveguide back cavity linear polarization antenna as claimed in claim 1, the diameter that it is characterized in that described plated-through hole less than the centre frequency of antenna work corresponding air wavelength 1/10th, the diameter of plated-through hole and substrate integrated wave-guide cavity wave with the ratio of the hole heart distance of last adjacent two plated-through holes on one side greater than 0.5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101568214A CN101183742B (en) | 2007-11-12 | 2007-11-12 | Rectangle substrate integrated waveguide back cavity linear polarization antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101568214A CN101183742B (en) | 2007-11-12 | 2007-11-12 | Rectangle substrate integrated waveguide back cavity linear polarization antenna |
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| Publication Number | Publication Date |
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| CN101183742A CN101183742A (en) | 2008-05-21 |
| CN101183742B true CN101183742B (en) | 2011-09-07 |
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Families Citing this family (11)
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| CN102340049B (en) * | 2010-07-27 | 2014-09-17 | 启碁科技股份有限公司 | Broadband antenna |
| CN102142619A (en) * | 2011-01-21 | 2011-08-03 | 杭州电子科技大学 | Cavity backed double-slit integrated antenna with increased gain |
| CN102142616A (en) * | 2011-01-21 | 2011-08-03 | 杭州电子科技大学 | Low profile cavity backed integrated antenna with widened frequency band |
| CN104811794A (en) * | 2014-01-27 | 2015-07-29 | 中兴通讯股份有限公司 | Medium data transmitting method, device and set top box |
| CN105958197A (en) * | 2016-06-16 | 2016-09-21 | 南京邮电大学 | Triangle substrate-integrated waveguide resonator-based planar slot antenna |
| CN107591617B (en) * | 2017-08-29 | 2019-11-05 | 电子科技大学 | A kind of SIW back chamber slot antenna of mixing AMC tessellate structure load |
| CN109830808A (en) * | 2019-02-26 | 2019-05-31 | 南京邮电大学 | Tunable chip integrated waveguide slot antenna based on BST |
| CN110620295B (en) * | 2019-09-05 | 2022-06-14 | 南京信息职业技术学院 | Substrate integrated waveguide slot antenna integrating solar cell and circuit module |
| CN111610883B (en) * | 2020-05-20 | 2023-11-24 | 维沃移动通信有限公司 | Touch display screen and electronic equipment |
| CN115621722B (en) * | 2022-11-10 | 2023-12-19 | 国网江苏省电力有限公司扬州供电分公司 | Logarithmic period dipole antenna with substrate integrated double-line feed and processing method |
| CN117559127B (en) * | 2024-01-12 | 2024-03-29 | 中国计量大学 | Single-double-frequency adjustable frequency reconfigurable vehicle-mounted antenna based on substrate integrated waveguide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588693A (en) * | 2004-09-23 | 2005-03-02 | 上海交通大学 | Small wide frequency printed single pole antenna |
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2007
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588693A (en) * | 2004-09-23 | 2005-03-02 | 上海交通大学 | Small wide frequency printed single pole antenna |
Non-Patent Citations (1)
| Title |
|---|
| Luo GuoQing et al.Theory and Experiment of Novel Frequency Selective Surface Based on Substrate Integrated Waveguide Technology.《IEEE Transaction on Antennas and Propagagtion》.2005,第53卷(第12期),4035-4043. * |
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| CN101183742A (en) | 2008-05-21 |
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Effective date of registration: 20161228 Address after: 316000 Zhoushan Zhoushan Economic Development Zone, Xingang Economic Zone, high-tech incubator, the first phase of the standard A plant on the first floor, floor two, Patentee after: Zhoushan Yijia Electronic Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310018 Jianggan District Xiasha Higher Education Park No. 2 street Patentee before: Hangzhou Electronic Science & Technology Univ. |
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