CN102354809B - Double-frequency and double-polarization antenna capable of operating in compass satellite navigation system and mobile third-generation (3G) network - Google Patents
Double-frequency and double-polarization antenna capable of operating in compass satellite navigation system and mobile third-generation (3G) network Download PDFInfo
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- CN102354809B CN102354809B CN201110227120.1A CN201110227120A CN102354809B CN 102354809 B CN102354809 B CN 102354809B CN 201110227120 A CN201110227120 A CN 201110227120A CN 102354809 B CN102354809 B CN 102354809B
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Abstract
The invention discloses a double-frequency and double-polarization antenna capable of operating in a compass satellite navigation system and a mobile third-generation (3G) network and is implemented in a form of a laminated micro-strip circuit. The double-frequency and double-polarization antenna capable of operating in the compass satellite navigation system and the mobile 3G network comprises an upper-layer micro-strip antenna, a lower-layer micro-strip antenna and a metal floor layer, wherein the upper-layer micro-strip antenna has an upper-layer patch; the lower-layer micro-strip antenna has a lower-layer patch; the metal floor layer is arranged on a bottom layer; the upper-layer micro-strip antenna and the lower-layer micro-strip antenna share one metal floor layer; and the antenna is provided with six short-circuit metal columns which pass through the upper-layer micro-strip antenna and the lower-layer micro-strip antenna from the upper-layer patch and then are connected with the metal floor layer which is arranged on the bottom layer. The antenna adopts a feeding mode of dual-port coaxial feeding and has the advantages of simple and compact structure, miniaturization, convenience for processing and industrialized application, and the like.
Description
Technical field
The present invention relates to a kind of antenna, particularly relate to a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G.
Background technology
Along with the development of Satellite Navigation Technique and development of Mobile Internet technology, the application of position-based service just continues to bring out.On domestic market, main application is to obtain geographical location information with Beidou satellite navigation and positioning system, with GPRS and 3G network, provide mobile Internet access service, so Beidou satellite navigation and positioning system and 3G (Third Generation) Moblie technology TD-SCDMA fusion technically can better realize movement, position, real-time mobile internet environment.Can utilize multisystem navigation (compatibility) type antenna of Beidou satellite navigation and positioning system and mobile 3G signal will obtain applying more and more widely simultaneously.
But design can utilize multisystem navigation (compatibility) type antenna of Beidou satellite navigation and positioning system and mobile 3G signal to have the technological difficulties of following several respects simultaneously:
1. the combination technology of Beidou satellite navigation and positioning system circular polarization and mobile 3G linear polarization
In mobile satellite communication, emission system on satellite circularly polarised wave broadcast singal, so that the vehicles in motion and the mobile satellite communication device end of user's adapted with the irrelevant any direction of satellite on can receive the signal of satellite, emission system on satellite covers a very large scope, need not aim at certain concrete terminal.In order to meet this demand, for the antenna of mobile satellite communication equipment, must very in broad beam, there is good circular polarization performance.As everyone knows, in mobile communication system, generally all adopt the circulation way of perpendicular polarization, therefore also to require be the polarization mode of linear polarization to reception antenna.And the technology of these two kinds of polarization mode combinations is not yet ripe.
2. improve dual-port microstrip antenna isolation technology
Beidou satellite navigation and positioning system operating frequency is 1615.68MHz, and mobile 3G, the operating frequency that is the A frequency range of TD-SCDMA is 1880 ~ 1920MHz, both frequencies are more approaching, during design microstrip antenna, size difference is little, and the isolation that often requires in actual use dual-port antenna ends mouth reaches certain standard, therefore how improving isolation between antennas is also the large difficult point in design.
3. microstrip antenna miniaturization technology
Microstrip antenna miniaturization technology is the Focal point and difficult point of the outer research of Now Domestic.No matter, from electrical property aspect or from mechanical dimension aspect, miniaturization technology is all indispensable.From electrical property aspect, satellite navigation system requires the radiation beam of antenna enough wide, and generally, the antenna that size is little can produce wide radiation beam.From mechanical dimension aspect, when a plurality of antenna elements are grouped together, the size of whole antenna must increase, and not only can increase aerodynamic drag, also can total price to the difficulty of the assembling aspect of antenna, the mechanical strength of antenna is had higher requirement.
Summary of the invention
The object of the invention is to capture the difficult point of prior art, a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G is provided.
The present invention has realized the target of the double frequency compatibility of Beidou satellite navigation system and mobile 3G, has in addition miniaturization, simple in structure and compact, is convenient to the feature of processing and commercial application.
Object of the present invention is achieved through the following technical solutions:
A kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G, comprise have upper strata paster upper strata microstrip antenna, there is lower floor's microstrip antenna of lower floor's paster and be placed in the metal floor layer of bottom, upper strata microstrip antenna comprises upper strata paster, upper layer medium substrate, the first feed metal column for port feed, the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column; Lower floor's microstrip antenna comprises lower floor's paster, layer dielectric substrate layer and for the second feed metal column of port feed; Upper strata microstrip antenna and lower floor's microstrip antenna share layer of metal floor layer; The circle center line connecting of the first short circuit metal column, the second short circuit metal column and the 3rd metal column bottom surface is parallel to the circle center line connecting of the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column bottom surface, is also parallel to the first diagonal of described metal floor layer; The circle center line connecting of the second short circuit metal column and the 5th metal column bottom surface, on the second diagonal of described metal floor layer, is equidistantly arranged in the both sides of the first feed metal column; The first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column penetrate upper strata microstrip antenna from upper strata paster and are connected with described metal floor layer with lower floor microstrip antenna; The upper end of the first feed metal column is connected with upper strata paster, and the upper end of the second feed metal column is connected with lower floor paster; The first feed metal column and the second feed metal column bottom surface circle center line connecting are on the first diagonal of described metal floor layer; Lower floor's paster is square paster, from the center, one side of square paster, cuts out the square grooving that is used to form perturbation, described in be used to form perturbation the position of square grooving near the second feed metal column; Upper strata paster and lower floor's paster are attached to respectively the upper and lower surface of upper layer medium substrate, and lower floor's paster and metal floor layer are attached to respectively the upper and lower surface of layer dielectric substrate; The center of upper layer medium substrate and layer dielectric substrate is provided with one for the cylindrical borehole of the first feed metal column is set; Layer dielectric substrate departs from center and is provided with one for the cylindrical borehole of the second feed metal column is set.
The dual-band dual-polarized antenna of above-mentioned worked in Beidou satellite navigation system and mobile 3G, the size of described the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column is identical with structure, the first short circuit metal column, the second short circuit metal column and the 3rd short circuit metal column form first group of short circuit metal column structures, and the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column form second group of short circuit metal column structures.
The dual-band dual-polarized antenna of above-mentioned worked in Beidou satellite navigation system and mobile 3G, upper strata paster structure is circular.Upper strata paster can be circular metal plate (copper sheet or silver strip).Lower floor's paster can be square-shaped metal sheet (copper sheet or silver strip).
The dual-band dual-polarized antenna of above-mentioned worked in Beidou satellite navigation system and mobile 3G, described upper strata paster, the first feed metal column and the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column, the 6th short circuit metal column forms the similar monopole antenna structure that loads short circuit wall circular patch, the first short circuit metal column wherein, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the diameter of the 5th short circuit metal column or the 6th short circuit metal column is less than the diameter of the first feed metal column.
The dual-band dual-polarized antenna of above-mentioned worked in Beidou satellite navigation system and mobile 3G, on described lower floor paster, be provided with the first circular borehole, the first square grooving and the second square grooving, size and the structure of the first square grooving and the second square grooving are completely equal, position is about lower floor's paster Central Symmetry, the first square grooving and the second square grooving have adopted paster fluting technology, use the length of proper proportion and wide groove, curved surface current path, the effective length that increases lower floor's paster, reduces the size of lower floor's microstrip antenna effectively; The center of the center of circle of the first circular borehole, the first square grooving and the second square grooving is on the diagonal of lower floor's paster; Lower floor's paster geometric center place arranges described the first circular borehole wearing for the first feed metal column, and the diameter of the first circular borehole is larger than the diameter of the first feed metal column; The both sides of the geometric center of lower floor's paster are equidistantly provided with the first square grooving wearing for first group of short circuit metal column and the second square grooving wearing for second group of short circuit metal column of short circuit.
The dual-band dual-polarized antenna of above-mentioned worked in Beidou satellite navigation system and mobile 3G, described metal floor layer is square-shaped metal sheet, is provided with for the second circular borehole of the first feed metal column feed with for the 3rd circular borehole of the second feed metal column feed on it.
The dual-band dual-polarized antenna of above-mentioned worked in Beidou satellite navigation system and mobile 3G, described upper layer medium substrate and layer dielectric substrate are the high frequency material of two kinds of differing dielectric constants.
The geometric center place of upper strata paster is provided with upper strata feedback point, is provided with lower floor's feedback point on lower floor's paster; Feed source is by the first feed metal column to upper strata paster feed, and feed source is passed through the second feed metal column to lower floor's paster feed.
Compared with prior art, the present invention has following advantage and technique effect:
(1) upper strata microstrip antenna is realized the linear polarization in mobile 3G frequency range by loading the similar monopole antenna of short circuit wall circular patch, the first short circuit metal column wherein, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the diameter of the 5th short circuit metal column or the 6th short circuit metal column is less than the diameter of the first feed metal column, the first short circuit metal column, the second short circuit metal column and the 3rd short circuit metal column form first group of short circuit metal column structures, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column form second group of short circuit metal column structures, by loading first group of short circuit metal column structures and second group of short circuit metal column structures, can effectively reduce the area of upper strata paster, and be conducive to reduce the return loss of this feed port, increase the impedance bandwidth of this feed port.
(2) lower floor's microstrip antenna is realized the left-hand circular polarization in Beidou satellite navigation system frequency range by perturbation and side feedback mode, wherein perturbation is to be cut out the square grooving that is used to form perturbation and realize in center on one side by square paster, has good circular polarization performance.In embodiment, axial ratio is less than in the situation of 3dB, and frequency range is that 1.613 ~ 1.618GHz(Beidou satellite navigation system antenna requirement 3dB axial ratio bandwidth is 2MHz).
(3) upper layer medium substrate adopts the different high frequency material of dielectric constant with layer dielectric substrate, little than layer dielectric substrate of the dielectric constant of upper layer medium substrate material wherein, the thickness of the Thickness Ratio layer dielectric substrate of upper layer medium substrate is large, be conducive to reduce the impact of upper strata antenna on lower floor's antenna, improve the isolation of two ports of antenna, and the floor space of upper layer medium substrate equates with the floor space of layer dielectric substrate, such integrated structure design is convenient to processing and commercial application.
(4) upper strata paster is circular configuration, and lower floor's paster is square structure, than levels paster, is all that circle or levels paster are all square structure, can effectively reduce the coupling between antenna ends mouth, improves isolation between antennas.Isolation between antenna ends mouth in embodiment is all greater than 20dB.
(5) upper strata microstrip antenna and lower floor's microstrip antenna share underlying metal floor layer, effectively reduce the thickness of antenna, make structure compacter, are convenient to processing.
Accompanying drawing explanation
Fig. 1 can work in the structural representation of the dual-band dual-polarized antenna of Beidou satellite navigation system and mobile 3G in execution mode;
Fig. 2 a is upper strata paster schematic diagram;
Fig. 2 b is the schematic diagram of lower floor's paster;
Fig. 2 c is the schematic diagram of underlying metal floor layer;
Fig. 3 a is return loss and isolation schematic diagram in Beidou satellite navigation system frequency range;
Fig. 3 b is axial ratio schematic diagram in Beidou satellite navigation system frequency range;
Left-handed polarization when Fig. 3 c is f=1.615 and right-hand polarization directional diagram;
Fig. 3 d is gain schematic diagram in Beidou satellite navigation system frequency range;
Fig. 4 a is return loss and isolation schematic diagram in mobile 3G frequency range;
Fig. 4 b is gain schematic diagram in mobile 3G frequency range;
E face directional diagram when Fig. 4 c is f=1.9GHz;
H face directional diagram when Fig. 4 d is f=1.9GHz.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated, but enforcement of the present invention and protection range are not limited to this.
As shown in Fig. 1,2a, 2b and 2c, a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G, adopt the form of stacked microstrip circuit to realize, comprise have upper strata paster 12 upper strata microstrip antenna 10, there is lower floor's microstrip antenna 20 of lower floor's paster 22 and be placed in the metal floor layer 30 of bottom; Upper strata microstrip antenna 10 comprises upper layer medium substrate 11, upper strata paster 12, for the first feed metal column 13, the first short circuit metal column 14, the second short circuit metal column 15, the 3rd short circuit metal column 16, the 4th short circuit metal column 17, the 5th short circuit metal column 18 and the 6th short circuit metal column 19 of port feed, wherein the first short circuit metal column 14, the second short circuit metal column 15, the 3rd short circuit metal column 16, the 4th short circuit metal column 17, the 5th short circuit metal column 18 are identical with structure with the 6th short circuit metal column 19 sizes; Lower floor's microstrip antenna 20 comprises layer dielectric substrate layer 21, lower floor's paster 22 and for the second feed metal column 23 of port feed; On metal floor layer 30, be provided with the second circular borehole 31 and the 3rd circular borehole 32, be respectively used to the feed of the first feed metal column 13 and the second feed metal column 23; Upper strata microstrip antenna 10He lower floor microstrip antenna 20 shares layer of metal floor layer 30; Upper strata paster 12He lower floor paster 22 is attached to respectively the upper and lower surface of upper layer medium substrate 11, and lower floor's paster 22 and metal floor layer 30 are attached to respectively the upper and lower surface of layer dielectric substrate 21; The first short circuit metal column 14, the second short circuit metal column 15, the 3rd short circuit metal column 16, the 4th short circuit metal column 17, the 5th short circuit metal column 18 and the 6th short circuit metal column 19 penetrate upper strata microstrip antenna 10He lower floor microstrip antenna 20 from described upper strata paster 12, are connected with described metal floor layer 30; The first feed metal column 13 penetrates upper layer medium substrate 11, layer dielectric substrate 21 and underlying metal floor layer 30 from upper strata paster 12, arrives the second circular borehole 31, is connected with external coaxial line joint; The second feed metal column 23Cong lower floor paster 22 penetrates layer dielectric substrate 21 and underlying metal floor layer 30, arrives the 3rd circular borehole 32, is connected with external coaxial line joint; The first feed metal column 13 and the second feed metal column 23 bottom surface circle center line connectings are parallel to a diagonal of metal floor layer 30; Upper layer medium substrate 11 and layer dielectric substrate 21 are respectively equipped with corresponding via hole, for the first feed metal column 13, the first short circuit metal column 14, the second short circuit metal column 15, the 3rd short circuit metal column 16, the 4th short circuit metal column 17, the 5th short circuit metal column 18 and the 6th short circuit metal column 19, wear; Layer dielectric substrate 21 is provided with corresponding via hole and wears for the second feed metal column 23.
Upper strata paster works in mobile 3G, i.e. the A frequency range (1.88 ~ 1.92GHz) of TD-SCDMA, and lower floor's paster works in the L frequency range (1615.68MHz) of Beidou satellite navigation system.
The first short circuit metal column 14, the second short circuit metal column 15, between first group of short circuit metal column structures and the first feed metal column 13 that the 3rd short circuit metal column 16 forms, the 4th short circuit metal column 17, the close coupling forming between second group of short circuit metal column structures that the 5th short circuit metal column 18 and the 6th short circuit metal column 19 form and the first feed metal column 13 is equivalent to and has loaded an electric capacity, make upper strata microstrip antenna 10 reach the impedance matching of upper strata microstrip antenna 10 on lower than resonance frequency position, thereby strengthened the impedance bandwidth of upper strata microstrip antenna 10, guarantee that the frequency bandwidth of upper strata microstrip antenna 10 can cover the frequency bandwidth of the A frequency range of mobile 3G, so just can contain the impact of multipath effect on this antenna, improve reliability and the precision of the reception signal of upper strata microstrip antenna 10.
In like manner, the first short circuit metal column 14, the second short circuit metal column 15, between first group of short circuit metal column structures and the second feed metal column 23 that the 3rd short circuit metal column 16 forms, the 4th short circuit metal column 17, the close coupling forming between second group of short circuit metal column structures that the 5th short circuit metal column 18 and the 6th short circuit metal column 19 form and the second feed metal column 23 is equivalent to and has loaded an electric capacity, make upper strata microstrip antenna 20 reach the impedance matching of upper strata microstrip antenna 20 on lower than resonance frequency position, thereby strengthened the impedance bandwidth of upper strata microstrip antenna 20, guarantee that the frequency bandwidth of upper strata microstrip antenna 20 can cover the frequency bandwidth of the L frequency range of Beidou satellite navigation system, so just can contain the impact of multipath effect on this antenna, improve reliability and the precision of the reception signal of upper strata microstrip antenna 20.
As shown in Figure 2 a and 2 b, upper strata paster 12 is circular, and lower floor's paster 22 is square.These two kinds of shapes are all symmetrical structure, easily realize paster and design symmetrically, and shape is also easy to processing and manufacturing; And be all circular or be all foursquare structural design than levels paster, this antenna can reduce the coupling of 20 of upper strata microstrip antenna 10He lower floor microstrip antennas, improves the isolation of antenna ends mouth.
As shown in Figure 2 b, lower floor's paster 22 center on one side cuts out the square grooving 24 that is used to form perturbation, the described square grooving 24 that is used to form perturbation can be played the effect of degenerate mode separation, be that square paster has increased a degenerate mode separative element, make the resonance frequency of degenerate mode produce separated, operating frequency is between two frequencies, when degenerate mode separative element is selected when suitable, for operating frequency, the equiva lent impedance phase angular advance of a mould, and the equiva lent impedance phase delay of another mould, when differing between them is 90 while spending, just formed circular polarization.
As shown in Figure 2 b, on lower floor's paster 22, be provided with the first square grooving 26 of circular borehole 25, first and the second square grooving 27.Size and the structure of the first square grooving 26 and the second square grooving 27 are completely equal, position is about lower floor's paster 22 Central Symmetries, the first square grooving 26 and the second square grooving 27 have adopted paster fluting technology, use the length of proper proportion and wide groove, curved surface current path, the effective length that increases lower floor's paster 22, reduces the size of lower floor's microstrip antenna 20 effectively; The center of circle of the first circular borehole 25, the first square grooving 26 and the second square grooving 27 center are on the diagonal of lower floor's paster 22; The diameter that the geometric center place of lower floor's paster 22 arranges the circular borehole 25 of described the first circular borehole 25, the first wearing for the first feed metal column 13 is larger than the diameter of the first feed metal column 13; The both sides of the geometric center of lower floor's paster 22 are equidistantly provided with the first square grooving 26 wearing for first group of short circuit metal column and the second square grooving 27 wearing for second group of short circuit metal column of short circuit.
Upper strata microstrip antenna 10He lower floor microstrip antenna 20 shares underlying metal floor layer 30, effectively reduces the thickness of antenna, makes structure compacter, is convenient to processing.
Upper layer medium substrate 11 is adopted the different high frequency material of 21 use dielectric constant with layer dielectric substrate, little than layer dielectric substrate 21 of the dielectric constant of upper layer medium substrate 11 materials wherein, the thickness of the Thickness Ratio layer dielectric substrate 21 of upper layer medium substrate 11 is large, be conducive to reduce the impact of upper strata antenna on lower floor's antenna, improve the isolation of two ports of antenna, and the floor space equal and opposite in direction of the floor space of upper layer medium substrate 11 and layer dielectric substrate 21, such integrated structure design is convenient to processing and commercial application.
Apply the design sketch of a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G of the present invention as Fig. 3 a, Fig. 3 b, Fig. 3 c, Fig. 3 d and Fig. 4 a, Fig. 4 b, shown in Fig. 4 c and Fig. 4 d.
From Fig. 3 a, can find out, in the L of Beidou satellite navigation system frequency range (1.605 ~ 1.625GHz) scope, be less than-10dB of return loss, be less than-40dB of the isolation of mobile 3G port; From Fig. 3 b, can find out, in 1.613GHz ~ 1.618MHz band limits, axial ratio AR is less than 3dB; From Fig. 3 c, can find out, this antenna has been realized good left-hand circular polarization at 1.615 these Frequency points; From Fig. 3 d, can find out, in 1.605 ~ 1.625GHz band limits, gain G ain is greater than 4 dB; The impedance bandwidth of this explanation antenna, axial ratio bandwidth and gain bandwidth have covered the L frequency range of Beidou satellite navigation system, and antenna has good performance in above-mentioned frequency range.
From Fig. 4 a, can find out, at mobile 3G, in A frequency range (1.88 ~ 1.92GHz) scope of TD-SCDMA, be less than-10dB of return loss
,be less than-20dB of isolation with the L frequency range port of Beidou satellite navigation system; From Fig. 4 b, can find out, in 1.88 ~ 1.92GHz band limits, gain G ain is greater than 1.7 dB; From Fig. 4 c and Fig. 4 d, can find out, antenna has good directivity when frequency equals 1.9GHz; The impedance bandwidth of this explanation antenna, axial ratio bandwidth and gain bandwidth have covered mobile 3G, i.e. the A frequency range of TD-SCDMA, antenna has good performance in above-mentioned frequency range.
Claims (5)
1. can work in the dual-band dual-polarized antenna of Beidou satellite navigation system and mobile 3G, comprise have upper strata paster upper strata microstrip antenna, there is lower floor's microstrip antenna of lower floor's paster and be placed in the metal floor layer of bottom, it is characterized in that: upper strata microstrip antenna comprises upper strata paster, upper layer medium substrate, the first feed metal column for port feed, the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column; Lower floor's microstrip antenna comprises lower floor's paster, layer dielectric substrate layer and for the second feed metal column of port feed; Upper strata microstrip antenna and lower floor's microstrip antenna share layer of metal floor layer; The circle center line connecting of the first short circuit metal column, the second short circuit metal column and the 3rd short circuit metal column bottom surface is parallel to the circle center line connecting of the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column bottom surface, is also parallel to the first diagonal of described metal floor layer; The circle center line connecting of the second short circuit metal column and the 5th metal column bottom surface, on the second diagonal of described metal floor layer, is equidistantly arranged in the both sides of the first feed metal column; The first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column penetrate upper strata microstrip antenna from upper strata paster and are connected with described metal floor layer with lower floor microstrip antenna; The upper end of the first feed metal column is connected with upper strata paster, and the upper end of the second feed metal column is connected with lower floor paster; The first feed metal column and the second feed metal column bottom surface circle center line connecting are on the first diagonal of described metal floor layer; Lower floor's paster is square paster, from the center, one side of square paster, cuts out the square grooving that is used to form perturbation, described in be used to form perturbation the position of square grooving near the second feed metal column; Upper strata paster and lower floor's paster are attached to respectively the upper and lower surface of upper layer medium substrate, and lower floor's paster and metal floor layer are attached to respectively the upper and lower surface of layer dielectric substrate; The center of upper layer medium substrate and layer dielectric substrate is provided with one for the cylindrical borehole of the first feed metal column is set; Layer dielectric substrate departs from center and is provided with one for the cylindrical borehole of the second feed metal column is set; Described upper strata paster structure is circular, and lower floor's paster is square structure; On described lower floor paster, be provided with the first circular borehole, the first square grooving and the second square grooving, size and the structure of the first square grooving and the second square grooving are completely equal, and position is about lower floor's paster Central Symmetry; The center of the center of circle of the first circular borehole, the first square grooving and the second square grooving is on the diagonal of lower floor's paster; Lower floor's paster geometric center place arranges described the first circular borehole wearing for the first feed metal column, and the diameter of the first circular borehole is larger than the diameter of the first feed metal column; The both sides of the geometric center of lower floor's paster are equidistantly provided with the first square grooving wearing for first group of short circuit metal column and the second square grooving wearing for second group of short circuit metal column of short circuit; Described upper layer medium substrate and layer dielectric substrate base area equate, but thickness is unequal, and the thickness of the Thickness Ratio layer dielectric substrate of upper layer medium substrate is large; Described upper layer medium substrate and layer dielectric substrate are the high frequency material of two kinds of differing dielectric constants, wherein little than layer dielectric substrate of the dielectric constant of upper layer medium substrate material.
2. a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G according to claim 1, the size that it is characterized in that described the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column is identical with structure, the first short circuit metal column, the second short circuit metal column and the 3rd short circuit metal column form first group of short circuit metal column structures, and the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column form second group of short circuit metal column structures.
3. a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G according to claim 1, is characterized in that: described upper strata paster, the first feed metal column, the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column and the 6th short circuit metal column form the similar monopole antenna structure that loads short circuit wall circular patch.
4. a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G according to claim 3, is characterized in that: the diameter of the first short circuit metal column, the second short circuit metal column, the 3rd short circuit metal column, the 4th short circuit metal column, the 5th short circuit metal column or the 6th short circuit metal column is less than the diameter of the first feed metal column.
5. a kind of dual-band dual-polarized antenna that works in Beidou satellite navigation system and mobile 3G according to claim 1, it is characterized in that: described metal floor layer is square-shaped metal sheet, on it, be provided with for the second circular borehole of the first feed metal column feed with for the 3rd circular borehole of the second feed metal column feed.
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| CN201110227120.1A CN102354809B (en) | 2011-08-09 | 2011-08-09 | Double-frequency and double-polarization antenna capable of operating in compass satellite navigation system and mobile third-generation (3G) network |
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