CN104319474A - City-wall-shaped aperture multilevel coupling plane directing multi-application laminated antenna - Google Patents
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Abstract
The invention provides a city-wall-shaped aperture multilevel coupling plane directing multi-application laminated antenna and relates to a microstrip antenna. The city-wall-shaped aperture multilevel coupling plane directing multi-application laminated antenna is provided with an upper substrate and a lower substrate. Metal layers are laid on the upper surface of the upper substrate and the upper surface of the lower substrate so that square patches can be formed. A corner symmetrical triangle corner cut structure is adopted by the upper square patch. City-wall-shaped aperture pairs which are symmetric about the geometric center of the upper patch are formed in the upper square patch, so that city-wall-shaped gap arrays are formed. Coupled cavities are formed between the city-wall-shaped gaps with electromagnetic coupling, four control coupled cavities at the 45-degree angle positions are arranged on the joint position of two sets of orthogonal city-wall-shaped gap arrays. A corner symmetrical triangle corner cut structure is adopted by the lower square patch. The middles of the four edges of the lower square patch are each provided with a rectangular groove, so that a fractal-like structure is formed, and directing arms which are symmetrical about the center of the lower square patch are arranged on the periphery of the four edges of the lower square patch. A good conductor layer is laid on the lower surface of the lower square patch as a grounded plate, and three feed connectors are arranged on the lower surface of the lower substrate.
Description
Technical field
The present invention relates to a kind of microstrip antenna, the city wall shape hole especially relating to a kind of compatible with GPS and Beidou satellite navigation system working frequency range is stitched multistage couple planar and is guided into and apply laminated antenna more.
Background technology
Beidou satellite navigation system (BDS) be China implementing independent development capability, independent operating GPS (Global Position System), be devoted to provide high-quality location, navigation, time service service to Global Subscriber, and further service can be provided to having the authorized user of requirements at the higher level, militaryly to have concurrently with civil purpose.The large core supplier of GPS (Global Position System) four that Beidou satellite navigation system, american global positioning system (GPS), Russian Glonass system (GLONASS) and European Union's GALILEO positioning system (GALILEO) are assert for the satellite navigation committee of the United Nations
[1].
Antenna Design and manufacturing technology are one of core key technologies of satellite, every characteristic of antenna and form size have impact on service behaviour and the application of satellite dramatically, along with the develop rapidly of satellite technology, people, on the basis that broadband, miniaturized, the anti-destructive to antenna etc. requires, when have higher requirement the aspect such as compatible with multiple networks to gain axis further.Antenna has very important status in satellite navigation system and terminal applies thereof, carries out deep research have important reference value and Practical significance to it.
Section is low, volume is little because having for conventional microstrip antenna, lightweight, can conformal, easy of integration, feeding classification flexibly, be convenient to obtain the advantage such as linear polarization and circular polarization, obtain a wide range of applications in many fields such as mobile communication, satellite communication, guided missile remote measurement, Doppler radars.Wherein, the shape of paster antenna is one of key factor affecting antenna performance, and it directly affects bandwidth, the index such as frequency and gain of antenna.For the miniaturization of antenna, Hately M C and Kabbary F M, Stewart B G has invented cross field antenna, and this is also small size antenna the earliest, and after this people investigated and can adopt high-k, crack
[2], meander technology
[3], load grounding probe
[4], the technology such as pbg structure realizes the miniaturization of antenna.In the design process of micro-strip paster antenna, due to multinomial technical indicator be interknit, interactive, therefore to consider the performance index of antenna, thus select the patch shape that corresponds to actual needs.
Directional Antenna is taught Yagi spark gap show time by two Nihon Universities and is invented in the twenties in last century with the new Taro in space field, therefore also known as Yagi antenna, yagi-uda or Yagi spark gap array antenna
[5].Yagi antenna is a kind of end-fire multiple antenna array, minimumly comprises an independent exciting unit and an independent parasitic element.In view of the outstanding advantages of Directional Antenna and microstrip antenna, in order to the two mutually organically be combined, domestic and international experts and scholars have done a lot of analysis and practical studies work
[6 ~ 9].
List of references:
[1]Hongwei?S,Zhigang?L,Feng?P.Development?of?satellite?navigation?in?China?[C]//Frequency?Control?Symposium,2007Joint?with?the?21st?European?Frequency?and?Time?Forum.IEEE?International.IEEE,2007:297-300.
[2]Nguyen?H?T.Microstrip?patch?miniaturization?by?slots?loading[C]//2005IEEE?Antennas?and?Propagation?Society?International?Symposium.2005,1:215-218.
[3]Luk?K?M,Lee?K?F.Small?dual?patch?antenna[J].Electronics?Letters,1999,35(10):762-764.
[4]Waterhouse?R?B,Targonski?S?D,Kokotoff?D?M.Design?and?performance?of?small?printed?antennas[J].Antennas?and?Propagation,IEEE?Transactions?on,1998,46(11):1629-1633.
[5]DeJean?G?R,Thai?T?T,Nikolaou?S,et?al.Design?and?analysis?of?microstrip?Bi-Yagi?and?Quad-Yagi?antenna?arrays?for?WLAN?applications[J].Antennas?and?Wireless?Propagation?Letters,IEEE,2007,6:244-248.
[6]Kraus?John?D,Marhefka?Ronald?J.Antennas?for?all?applications[M].Upper?Saddle?River,NJ:McGraw?Hill,2002.
[7]Song?H?J,Bialkowski?M?E,Kabacik?P.Parameter?study?of?a?broadband?uniplanar?quasi-Yagi?antenna[C]//Microwaves,Radar?and?Wireless?Communications.2000.MIKON-2000.13th?International?Conference?on.IEEE,2000,1:166-169.
[8]Padhi?S?K,Bialkowski?M?E.Parametric?study?of?a?microstrip?Yagi?antenna[C]//Microwave?Conference,2000Asia-Pacific.IEEE,2000:715-718.
[9]Yihan?D,Xiaoying?Z.A?novel?microstrip?Yagi?antenna?with?tunable?radiation?pattern?and?central?frequency[C]//Intelligent?Radio?for?Future?Personal?Terminals(IMWS-IRFPT),2011IEEE?MTT-S?International?Microwave?Workshop?Series?on.IEEE,2011:1-2.
Summary of the invention
The object of the present invention is to provide the city wall shape hole of a kind of compatible with GPS and Beidou satellite navigation system working frequency range to stitch multistage couple planar to guide into and apply laminated antenna more.
The present invention is provided with underlying substrate and top substrate layer, is covered with metal level formation square patch respectively at the upper surface of top substrate layer and underlying substrate; Upper strata square patch adopts bight symmetrical triangle corner cut structure, upper strata square patch is provided with the city wall shape gap pair of paster geometric center symmetry, form city wall shape gap array, coupling cavity is provided with between the city wall shape gap with electromagnetic coupled, at two groups of orthogonal city wall array joining places, be provided with the regulation and control coupling cavity of 4 miter angle positions; Lower floor square patch adopts bight symmetrical triangle corner cut structure, is respectively provided with a rectangular recess and forms class fractal structure in the middle part of four limits of lower floor's square patch, is arranged with that paster is centrosymmetric guides arm into outside four limits of lower floor's square patch; Underlying substrate lower surface is covered with good conductor layer as ground plate, and underlying substrate lower surface is provided with 3 feed connection, and 3 feed connection are connected with 3 distributing points respectively.
Described top substrate layer and underlying substrate all can adopt relative dielectric constant be 2 ~ 12 medium substrate, relative dielectric constant preferably 4.4; The thickness of top substrate layer and underlying substrate can be 2 ~ 4mm, preferred 3mm; The length of side of described top substrate layer can be 30 ~ 36mm, preferred 34mm; The length of side of underlying substrate can be 70 ~ 80mm, preferred 72mm.
The length of side a1 of described upper strata square patch can be 24 ~ 28mm, preferred 26mm.The bight corner cut length of side s1 of bight symmetrical triangle corner cut structure is adopted to can be 3 ~ 7mm, preferred 5mm.
The long limit L1 in described outer city wall shape gap can be 1 ~ 6mm, preferred 2.55mm, and minor face W1 can be 1 ~ 4mm, preferred 1.45mm, and gap width b1 can be 0.3 ~ 0.6mm, preferred 0.55mm.The long limit W2 in interior city wall shape gap can be 1 ~ 3mm, preferred 2.30mm, and minor face L2 can be 1 ~ 2mm, preferred 1.55mm.Gap width b1 can be 0.3 ~ 0.6mm, between gap, the radius of coupling cavity can be 0.2 ~ 0.6mm, preferred 0.4mm, the spacing d1 of coupling cavity can be 3 ~ 7mm, preferred 4.90mm, the distance d3 on the limit of outer city wall shape gap and upper strata square patch can be 1 ~ 6mm, preferred 2.677mm, the distance d4 on the limit of interior city wall shape gap and upper strata square patch can be 3 ~ 8mm, preferred 5.307mm.
The radius of described regulation and control coupling cavity can be 0.2 ~ 0.6mm, preferred 0.4mm, and the distance d2 between regulation and control coupling cavity can be 1 ~ 3mm, preferred 1.846mm.
The radius of upper strata radiation patch dipper system terminal antenna S frequency range distributing point is 0.60mm ± 0.01mm, and short circuit nail radius is 0.60mm ± 0.01mm.
The length of side a2 of lower floor's square patch can be 38 ~ 42mm, preferred 40.5mm.Adopt bight symmetrical triangle corner cut structure to produce circular polarization, bight corner cut length of side s2 can be 3 ~ 9mm, preferred 6mm.At lower floor's square patch four sides, mid point is provided with rectangular recess, and form class fractal structure, the long limit W4 of described rectangular recess can be 6 ~ 10mm, preferred 7.75mm, and minor face L4 can be 1 ~ 3mm, preferred 2mm.Periphery can be 37 ~ 42mm, preferred 39mm about the centrosymmetric long limit L5 of the length of side guiding arm into of paster, and minor face W5 can be 4 ~ 8mm, preferred 6mm.
The long limit W3 that underlying substrate upper surface periphery guides arm city wall shape gap into can be 1 ~ 6mm, preferred 3.2mm, and minor face L3 can be 1 ~ 4mm, preferred 1.8mm, and gap width b2 can be 0.3 ~ 1.0mm, preferred 0.7mm.The distance d5 guiding arm and square patch into can be 3 ~ 7mm, preferred 4.75mm.
The radius of lower floor radiation patch dipper system terminal antenna L frequency range distributing point can be 0.60mm ± 0.01mm, gps system terminal antenna L
1the radius of frequency range distributing point can be 0.60mm ± 0.01mm.
Ground plate is square, and the ground plate length of side can be 70 ~ 80mm; Preferred 72mm.Ground plate is silver layer or the layers of copper that thickness is greater than skin depth.
The present invention is covered with metal level respectively at the upper surface of upper and lower base plate and forms square patch; Adopt bight symmetrical triangle corner cut structure, introduce the city wall shape gap pair about paster geometric center symmetry thereon, form city wall shape gap array, coupling cavity is provided with between two gaps that city wall shape gap is right, and at two groups of orthogonal city wall array joining places, 4 miter angle positions introduce multiple regulation and control coupling cavity; And lower floor's square patch also adopts bight symmetrical triangle corner cut structure, and each introducing rectangular recess forms class fractal structure in the middle part of its four limit, and peripheral introducing guides arm into about the centrosymmetric modified model of paster.In the square patch of upper strata, introduce city wall shape gap structure, effectively can extend current path, contribute to the miniaturization realizing antenna; Coupling cavity is set between the city wall shape gap with electromagnetic coupled, the periodically coupling of city wall shape gap itself can be regulated and controled, also can control the electromagnetic coupled between different city wall shape gap; At multiple regulation and control coupling cavitys that the miter angle position of two groups of orthogonal city wall array joining places is introduced, the vertical and horizontal component of radiation field can be regulated and controled, regulate antenna axial ratio and polarization; The introducing of short circuit nail not only contributes to realizing antenna miniaturization, and can improve the impedance matching of antenna.In lower floor's paster, bight symmetric triangular structure can broadband width and generation circular polarization.Introducing city wall shape gap structure about centrosymmetric the guiding in arm of paster, effective electrical length can be extended, improving the radiation characteristic of antenna and optimizing the gain of antenna.Adopt lamination to be coupled three feed structures, achieve three characteristics frequently, and there are higher three isolations frequently.The antenna that the present invention relates to can meet that Beidou antenna size is little, bandwidth is comparatively large, return loss is lower, gain is high, receive and requirement that the channel interference that transmits is little, and the compatibility L of gps system
1frequency range.
Design frequency range of the present invention can be three frequency ranges, is respectively 1.55 ~ 1.605GHz, and 1.57 ~ 1.66GHz and 2.45 ~ 2.53GHz covers gps system L
1working frequency range and triones navigation system L and S two working frequency range.
Compared with existing satellite antenna, the present invention has following outstanding technique effect:
Adopt lamination to be coupled three feed structures, achieve Beidou satellite navigation system two-band and gps system L
1the compatibility feature of frequency range totally three frequency ranges, and there are higher three isolations frequently.Introduce city wall shape gap structure and lower floor's paster due to upper strata square patch and have employed class fractal structure, make the size of antenna obtain reducing to a certain extent.In addition, upper strata square patch introduces multiple regulation and control coupling cavity, controls the vertical and horizontal component of radiation field, adjustable antenna axial ratio and polarization.Lower floor's paster is introduced modified model and is guided arm into, improves the radiation characteristic of antenna and optimizes the gain of antenna, can reach the requirement of the satellite communication system such as big-dipper satellite and GPS navigation to antenna.
Accompanying drawing explanation
Fig. 1 is the upper strata square patch structural representation of the embodiment of the present invention.
Fig. 2 is lower floor's square patch structural representation of the embodiment of the present invention.
Fig. 3 is the ground plate structural representation of the embodiment of the present invention.
Fig. 4 is the side structure schematic diagram of the embodiment of the present invention.
Fig. 5 is the return loss performance figure of the embodiment of the present invention when 1.572GHz.Abscissa in Fig. 5 represents frequency Frequency (GHz), and ordinate represents return loss intensity The return loss of the Antenna (dB); Coordinate is rectangular coordinate.
Fig. 6 is the return loss performance figure of the embodiment of the present invention when 1.616GHz.Abscissa in Fig. 6 represents frequency Frequency (GHz), and ordinate represents return loss intensity The return loss of the Antenna (dB); Coordinate is rectangular coordinate.
Fig. 7 is the return loss performance figure of the embodiment of the present invention when 2.492GHz.Abscissa in Fig. 7 represents frequency Frequency (GHz), and ordinate represents return loss intensity The return loss of the Antenna (dB); Coordinate is rectangular coordinate.
Fig. 8 is that the embodiment of the present invention is at GPS navigation system L
1the E face directional diagram of frequency range.Coordinate in Fig. 8 is polar coordinates.
Fig. 9 is that the embodiment of the present invention is at GPS navigation system L
1the H face directional diagram of frequency range.Coordinate in Fig. 9 is polar coordinates.
Figure 10 is the E face directional diagram of the embodiment of the present invention in triones navigation system L frequency range.Coordinate in Figure 10 is polar coordinates.
Figure 11 is the H face directional diagram of the embodiment of the present invention in triones navigation system L frequency range.Coordinate in Figure 11 is polar coordinates.
Figure 12 is the E face directional diagram of the embodiment of the present invention in triones navigation system S frequency range.Coordinate in Figure 12 is polar coordinates.
Figure 13 is the H face directional diagram of the embodiment of the present invention in triones navigation system S frequency range.Coordinate in Figure 13 is polar coordinates.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described.
With reference to Fig. 1 ~ 4, mark in figure 16 and 17 for dielectric constant be 4.4 square medium substrate, marking the 16 substrate length of sides is 34.0mm ± 0.1mm, and marking the 17 substrate length of sides is 72.0mm ± 0.1mm.All layers of copper is covered with at the upper surface of mark 16 and the upper and lower surface of mark 17.The upper surface of mark 16 have employed city wall shape gap array loading technique, and its basic configuration is square.Square patch (Fig. 1 marks 1) adopts bight symmetrical triangle corner cut structure (Fig. 1 marks 2), and corresponding triangular right-angle length of side s1 is 5.0mm ± 0.1mm.Primary radiation paster 1 loads the city wall shape gap array (Fig. 1 marks 3 and 4) about paster geometric center symmetry, in often pair of city wall shape gap, the long limit L1 in outer city wall shape gap is 2.55mm ± 0.1mm, minor face W1 is 1.45mm ± 0.1mm, and the distance d3 on distance square patch 1 limit is 2.677mm ± 0.1mm.The long limit W2 in interior city wall shape gap is 2.30mm ± 0.1mm, and minor face L2 is 1.55mm ± 0.1mm, and the distance d4 on distance square patch 1 limit is 5.307mm ± 0.1mm, gap width b1 is 0.55mm ± 0.1mm.Between gap, be provided with coupling cavity (Fig. 1 marks 5), coupling cavity radius is 0.4mm ± 0.1mm, and the spacing d1 of coupling cavity is 4.90mm ± 0.1mm.Introduce multiple regulation and control coupling cavity (Fig. 1 marks 6) two groups of orthogonal city wall array joining place miter angle positions, regulation and control coupling cavity radius is 0.4mm ± 0.1mm, and chamber spacing d2 is 1.846mm ± 0.1mm.Have the length of side to be the square patch (in Fig. 2 mark 9) of 40.5mm ± 0.1mm at the upper surface of mark 17, adopt bight symmetrical triangle corner cut structure (marking 10 in Fig. 2), corresponding triangular right-angle length of side s2 is 6.0mm ± 0.1mm.Introduce rectangular recess (Fig. 2 marks 11) in the middle part of paster four limit and form class fractal structure, the long limit W4 of this groove is 7.75mm ± 0.1mm, and minor face L4 is 2.0mm ± 0.1mm.The length of side L5 guiding arm (Fig. 2 marks 12) about the centrosymmetric modified model of paster into that paster periphery is introduced, W5 is respectively 39.0mm ± 0.1mm, 6.0mm ± 0.1mm, is 4.75mm ± 0.1mm with the spacing d5 of paster.Modified model is guided in arm and is adopted city wall shape gap structure (Fig. 2 marks 13), and long limit W3 is 3.2mm ± 0.1mm, and minor face L3 is 1.8mm ± 0.1mm, gap width b2 is 0.7mm ± 0.1mm.
Marking 7,14 and 15 in figure is coaxial feed, and radius is all the hollow cylinder of 0.6mm ± 0.1mm, and wherein 7 carry out feed through 9,16,17 pairs of pasters 1, are highly 6.0mm ± 0.3mm; And 14,15 are through 17 pairs of pasters 9 and carry out feed, be highly 3.0mm ± 0.2mm, marking 8 in figure is follow closely through the short circuit of top substrate layer 16.Adopt the form feed of coaxial line offset-fed in the present invention, this feed form makes the S of antenna
11lower, gain improves, and wherein the inner core of coaxial line is connected with paster by feedback hole, and the outer core of coaxial line is connected with the reflecting plate of dielectric-slab lower surface.
See Fig. 5 ~ 7, therefrom can find out, the working frequency range of inventive antenna is: GPS navigation system L
1frequency range 1.55GHz ~ 1.605GHz, triones navigation system L frequency range 1.57GHz ~ 1.66GHz and triones navigation system S frequency range 2.45GHz ~ 2.53GHz.At the return loss (S of these three working frequency range internal antennas
11) all below-10dB, the minimum echo loss in gps system L1 wave band is-25.68dB, the minimum echo loss in triones navigation system L frequency range is-27.869dB, and the minimum echo loss in triones navigation system S frequency range is-25.69dB.Inventive antenna is at gps system L
1absolute bandwidth and the relative bandwidth of frequency range are respectively: 55MHz and 3.49%; Be respectively at the absolute bandwidth of triones navigation system L frequency range and relative bandwidth: 90MHz and 5.57%; Be respectively at the absolute bandwidth of triones navigation system S frequency range and relative bandwidth: 80MHz and 3.21%, overall performance is better than general patch microstrip antenna, and can the working frequency range of compatible with GPS navigation system and triones navigation system well.
See Fig. 8 ~ 13, wherein Fig. 8 and Fig. 9 is gps system L
1the E face directional diagram of band operation frequency 1.572GHz and H face directional diagram, Figure 10 and Figure 11 is E face directional diagram and the H face directional diagram of triones navigation system L band operation frequency 1.616GHz, Figure 12 and Figure 13 is E face directional diagram and the H face directional diagram of triones navigation system S band operation frequency 2.492GHz.Result shows, the patch microstrip antenna in the present invention has directional radiation properties, can meet the requirement of satellite communication system.
See table 1, table 1 gives manufacture mismachining tolerance of the present invention affects situation to antenna performance.
Table 1
Note: in table, data have certain redundancy, has certain relevance between each parameter, and what provide is equalization characteristic, can complete particular design according to needing optimum structural parameter.
Manufacture mismachining tolerance of the present invention is little on the impact of each parameter of antenna in allowed limits.Such as, the spacing on the width in patch size, gap, gap and each limit, the size of medium substrate, dielectric-slab copper-clad thickness, feed position equal error control within 2%, and the relative dielectric constant control errors of ceramic dielectric substrate within 5% time, the parameters change of antenna is little.
Claims (10)
1. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more, it is characterized in that being provided with underlying substrate and top substrate layer, is covered with metal level respectively forms square patch at the upper surface of top substrate layer and underlying substrate; Upper strata square patch adopts bight symmetrical triangle corner cut structure, upper strata square patch is provided with the city wall shape gap pair of paster geometric center symmetry, form city wall shape gap array, coupling cavity is provided with between the city wall shape gap with electromagnetic coupled, at two groups of orthogonal city wall array joining places, be provided with the regulation and control coupling cavity of 4 miter angle positions; Lower floor square patch adopts bight symmetrical triangle corner cut structure, is respectively provided with a rectangular recess and forms class fractal structure in the middle part of four limits of lower floor's square patch, is arranged with that paster is centrosymmetric guides arm into outside four limits of lower floor's square patch; Underlying substrate lower surface is covered with good conductor layer as ground plate, and underlying substrate lower surface is provided with 3 feed connection, and 3 feed connection are connected with 3 distributing points respectively.
2. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, it is characterized in that described top substrate layer and underlying substrate all adopt relative dielectric constant be 2 ~ 12 medium substrate, relative dielectric constant preferably 4.4.
3. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, it is characterized in that the thickness of top substrate layer and underlying substrate is 2 ~ 4mm, preferred 3mm; The length of side of described top substrate layer is 30 ~ 36mm, preferred 34mm; The length of side of underlying substrate is 70 ~ 80mm, preferred 72mm.
4. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, it is characterized in that the length of side a1 of described upper strata square patch is 24 ~ 28mm, preferred 26mm; The bight corner cut length of side s1 of bight symmetrical triangle corner cut structure is adopted to can be 3 ~ 7mm, preferred 5mm.
5. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, it is characterized in that the long limit L1 in described outer city wall shape gap is 1 ~ 6mm, preferred 2.55mm, minor face W1 is 1 ~ 4mm, preferred 1.45mm, gap width b1 are 0.3 ~ 0.6mm, preferred 0.55mm; The long limit W2 in interior city wall shape gap can be 1 ~ 3mm, preferred 2.30mm, and minor face L2 can be 1 ~ 2mm, preferred 1.55mm; Gap width b1 can be 0.3 ~ 0.6mm, between gap, the radius of coupling cavity can be 0.2 ~ 0.6mm, preferred 0.4mm, the spacing d1 of coupling cavity can be 3 ~ 7mm, preferred 4.90mm, the distance d3 on the limit of outer city wall shape gap and upper strata square patch can be 1 ~ 6mm, preferred 2.677mm, the distance d4 on the limit of interior city wall shape gap and upper strata square patch can be 3 ~ 8mm, preferred 5.307mm.
6. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, and it is characterized in that the radius of described regulation and control coupling cavity is 0.2 ~ 0.6mm, preferred 0.4mm, the distance d2 between regulation and control coupling cavity is 1 ~ 3mm, preferred 1.846mm.
7. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, and it is characterized in that the radius of upper strata radiation patch dipper system terminal antenna S frequency range distributing point is 0.60mm ± 0.01mm, short circuit nail radius is 0.60mm ± 0.01mm.
8. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, it is characterized in that the length of side a2 of lower floor's square patch is 38 ~ 42mm, preferred 40.5mm; Adopt bight symmetrical triangle corner cut structure to produce circular polarization, bight corner cut length of side s2 can be 3 ~ 9mm, preferred 6mm; At lower floor's square patch four sides, mid point is provided with rectangular recess, and form class fractal structure, the long limit W4 of described rectangular recess can be 6 ~ 10mm, preferred 7.75mm, and minor face L4 can be 1 ~ 3mm, preferred 2mm; Periphery can be 37 ~ 42mm, preferred 39mm about the centrosymmetric long limit L5 of the length of side guiding arm into of paster, and minor face W5 can be 4 ~ 8mm, preferred 6mm.
9. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, it is characterized in that the peripheral long limit W3 guiding arm city wall shape gap into of underlying substrate upper surface is 1 ~ 6mm, preferred 3.2mm, minor face L3 is 1 ~ 4mm, preferred 1.8mm, gap width b2 is 0.3 ~ 1.0mm, preferred 0.7mm.
10. city wall shape hole is stitched multistage couple planar and is guided into and apply laminated antenna more as claimed in claim 1, and the distance d5 that it is characterized in that guiding into arm and square patch is 3 ~ 7mm, preferred 4.75mm; The radius of lower floor radiation patch dipper system terminal antenna L frequency range distributing point is 0.60mm ± 0.01mm, gps system terminal antenna L
1the radius of frequency range distributing point can be 0.60mm ± 0.01mm; Ground plate is square, and the ground plate length of side can be 70 ~ 80mm; Preferred 72mm; Ground plate is silver layer or the layers of copper that thickness is greater than skin depth.
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| CN113555682A (en) * | 2021-07-01 | 2021-10-26 | 北京航空航天大学 | Miniaturized three-frequency-band microstrip antenna |
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| CN104882672A (en) * | 2015-05-28 | 2015-09-02 | 电子科技大学 | Wide bandwidth wave beam circular polarization Yagi-microstrip antenna |
| CN110383581A (en) * | 2017-03-08 | 2019-10-25 | 株式会社友华 | Paster antenna with slit |
| EP3595086A4 (en) * | 2017-03-08 | 2020-12-23 | Yokowo Co., Ltd. | Slotted patch antenna |
| US11233329B2 (en) | 2017-03-08 | 2022-01-25 | Yokowo Co., Ltd. | Slotted patch antenna |
| US11894624B2 (en) | 2017-03-08 | 2024-02-06 | Yokowo Co., Ltd. | Slotted patch antenna |
| CN107909136A (en) * | 2017-11-14 | 2018-04-13 | 深圳市盛路物联通讯技术有限公司 | Electronic tag and radio-frequency recognition system in radio-frequency recognition system |
| CN109904604A (en) * | 2019-02-20 | 2019-06-18 | 湖南大学 | A kind of antenna |
| CN109904604B (en) * | 2019-02-20 | 2020-09-08 | 湖南大学 | Antenna |
| CN113555682A (en) * | 2021-07-01 | 2021-10-26 | 北京航空航天大学 | Miniaturized three-frequency-band microstrip antenna |
| CN117080740A (en) * | 2023-09-20 | 2023-11-17 | 湖南省英洛康科技有限公司 | Miniaturized airborne communication antenna, application method thereof and unmanned aerial vehicle |
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| Publication number | Publication date |
|---|---|
| CN104319474B (en) | 2017-02-22 |
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