CN103036073A - Dual-frequency dual-polarized antenna - Google Patents
Dual-frequency dual-polarized antenna Download PDFInfo
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- CN103036073A CN103036073A CN2013100031414A CN201310003141A CN103036073A CN 103036073 A CN103036073 A CN 103036073A CN 2013100031414 A CN2013100031414 A CN 2013100031414A CN 201310003141 A CN201310003141 A CN 201310003141A CN 103036073 A CN103036073 A CN 103036073A
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Abstract
The invention discloses a dual-frequency dual-polarized antenna which comprises a reflecting plate, a low-frequency oscillator, a high-frequency oscillator and a circuit combiner. In the low-frequency oscillator, a first half-wave dipole, a second half-wave dipole, a third half-wave dipole and a fourth half-wave dipole stand up and are uniformly distributed on the top face of the reflecting plate; the first half-wave dipole is orthogonal to the second half-wave dipole and is parallel to the third half-wave dipole, and the second half-wave dipole is parallel to the fourth half-wave dipole; and the bottom end of the first half-wave dipole is connected with that of the third half-wave dipole through a cable and connected to the low-frequency port of the circuit combiner, and the bottom end of the second half-wave dipole is connected with that of the fourth half-wave dipole through a cable and connected to the low-frequency port of the circuit combiner. The high-frequency oscillator stands up on the top face of the reflecting plate, is positioned in the center of a region defined by the low-frequency oscillator, and is connected to the high-frequency port of the circuit combiner through a cable. The low-frequency port and the high-frequency port of the circuit combiner are connected with an external antenna housing respectively. The application function of the dual-frequency dual-polarized antenna is expanded.
Description
Technical field
The present invention relates to the mobile communication base station radio-frequency technique, relate in particular to a kind of dual-band dual-polarized antenna.
Background technology
Along with the propelling of new and high technology and economic benefit, communications industry has become one of industry of largest domestic.The develop rapidly of the mobile communication in the communications industry, make it in user's daily life, bring into play more and more important effect, at the beginning of 2010, China's tracking exchage amount surpasses 7.36 hundred million, and the antenna for base station that comes into operation surpasses 1,000,000 pairs, and, continuous increase along with mobile communication business and kind, the mobile communication working frequency range of various standards is thereupon constantly expansion also, causes the volume of antenna constantly to increase, structure is increasingly sophisticated, and cost is also more and more higher.
In the present mobile communication, the coexistence of the wireless system of the multiple types such as the second generation (2G), the third generation (3G), rear three generations and WLAN/WiMAX, the mobile communication frequency range is in continuous expansion, and is also more and more higher to the requirement of the beamwidth of antenna.Therefore, need the antenna in the existing wireless system can compatible multiple types, for example, not only need to support 2G or 3G system, also must support simultaneously Long Term Evolution (LTE, Long Term Evolution) technology, and the Structure of need miniaturization.
For can compatible multiple types, broadband dual polarized antenna has obtained Devoting Major Efforts To Developing, existing broadband dual polarized antenna, working frequency range is the widest can to cover 790～960/1710～2690MHz simultaneously, but still can't support the 700MHz frequency spectrum of LTE, so that existing broadband dual polarized antenna can not compatible multiple types, application function is restricted.
Summary of the invention
Embodiments of the invention provide a kind of dual-band dual-polarized antenna, the extended antenna application function.
For achieving the above object, a kind of dual-band dual-polarized antenna that the embodiment of the invention provides comprises: reflecting plate, low frequency oscillator, high frequency oscillator and mixer, wherein, the low frequency oscillator comprises: the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole
The first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole stand up and are distributed on the reflecting plate end face, the first half-wave dipole and the second half-wave dipole quadrature, the first half-wave dipole is parallel to the 3rd half-wave dipole, and the second half-wave dipole is parallel to the 4th half-wave dipole;
The bottom of the first half-wave dipole links to each other by the bottom of cable with the 3rd half-wave dipole, and is connected to the low frequency port of mixer, and the bottom of the second half-wave dipole links to each other by the bottom of cable with the 4th half-wave dipole, and is connected to the low frequency port of mixer;
The high frequency oscillator stands up the center that on the reflecting plate end face the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole form the zone, is connected to the high frequency port of mixer by cable;
The low frequency port of mixer and high frequency port link to each other with the radome of outside respectively.
Preferably, described the first half-wave dipole comprises: base, the first pillar, the second pillar, the first oscillator arms and the second oscillator arms, wherein,
The top of the first pillar links to each other with the first oscillator arms, and the top of the second pillar links to each other with the second oscillator arms, is air dielectric between the first pillar and the second pillar;
Base is fixed on the reflecting plate, and the bottom of the first pillar is unsettled, is connected to the low frequency port of mixer by cable, and the bottom of the second pillar is fixed on the base;
The first oscillator arms and the second oscillator arms are connected, and symmetry is positioned at the half-wave dipole top.
Preferably, described the first pillar and the second pillar are the square metal post.
Preferably, the end of described the first oscillator arms and the second oscillator arms upwards, downward or inside bending;
Described the first pillar and the inside bending of the second pillar.
Preferably, the distance between described the first half-wave dipole and the 3rd half-wave dipole is 0.4～0.65 λ, and wherein, λ is wavelength corresponding to low-frequency range center frequency point.
Preferably, described dual-band dual-polarized antenna further comprises: low frequency loop and high frequency loop, wherein,
The low frequency loop, be arranged at the reflecting plate bottom surface, comprise: the first loop and the second loop, wherein, the first interface of the first loop links to each other by a half-wave dipole bottom in four half-wave dipoles of cable and low frequency oscillator, the parallel half-wave dipole bottom of the half-wave dipole that the second interface links to each other with described first interface by cable links to each other, the 3rd interface links to each other by the input port of cable with the second loop, and the output port of the second loop links to each other with the low frequency port of mixer by cable;
The high frequency loop is arranged at the reflecting plate bottom surface, and input port links to each other by the bottom of cable with the high frequency oscillator, and output port is connected with the high frequency port of mixer.
Preferably, the cable between described the first loop and the second loop adopts the 35 Ω cables of 1/4 λ; Other cables adopt 50 Ω cables.
Preferably, described dual-band dual-polarized antenna further comprises:
Director dipole is arranged at respectively the top of four half-wave dipoles of low frequency oscillator, links to each other with half-wave dipole by lead-in wire.
Preferably, described director dipole is one or more bonding jumper.
Preferably, described dual-band dual-polarized antenna further comprises:
Baffle plate is arranged between low frequency oscillator and the high frequency oscillator, is fixed on the reflecting plate end face.
Preferably, described baffle shapes is annular, square or triangle.
Preferably, described dual-band dual-polarized antenna further comprises:
The plastic medium plate by being arranged on the fixed leg in the circular baffle plate, is fixed on the fixed leg top.
Preferably, the quantity of described low frequency oscillator is more than one, and the quantity of described high frequency oscillator is more than one.
Preferably, the quantity of described low frequency oscillator is 2 o'clock, and the quantity of described high frequency oscillator is more than 3, wherein, between two low frequency oscillators, one or more high frequency oscillators are set, the equidistant or unequal-interval arranged in co-axial alignment of the high frequency oscillator in the high frequency oscillator between the two low frequency oscillators and the low frequency oscillator.
Preferably, distance is 0.6～1.2 times of high frequency vibrating subcenter frequency corresponding wavelength between the adjacent two described high frequency oscillators.
As seen from the above technical solution, a kind of dual-band dual-polarized antenna that the embodiment of the invention provides, this dual-band dual-polarized antenna comprises: reflecting plate, the low frequency oscillator, high frequency oscillator and mixer, wherein, the low frequency oscillator comprises: the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole, the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole stand up and are distributed on the reflecting plate end face, the first half-wave dipole and the second half-wave dipole quadrature, the first half-wave dipole is parallel to the 3rd half-wave dipole, and the second half-wave dipole is parallel to the 4th half-wave dipole; The bottom of the first half-wave dipole links to each other by the bottom of cable with the 3rd half-wave dipole, and is connected to the low frequency port of mixer, and the bottom of the second half-wave dipole links to each other by the bottom of cable with the 4th half-wave dipole, and is connected to the low frequency port of mixer; The high frequency oscillator stands up the center that on the reflecting plate end face the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole form the zone, is connected to the high frequency port of mixer by cable; The low frequency port of mixer and high frequency port link to each other with the radome of outside respectively.Like this, be arranged by low frequency dual polarization vibrator and high-frequency bipolar oscillator are divided, the low frequency oscillator is arranged on the outside of high frequency oscillator, can compatible multiple types, expanded the antenna applications function.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is embodiment of the invention dual-band dual-polarized antenna perspective view.
Fig. 2 is embodiment of the invention dual-band dual-polarized antenna master TV structure schematic diagram.
Fig. 3 is embodiment of the invention dual-band dual-polarized antenna plan structure schematic diagram.
Fig. 4 is embodiment of the invention half-wave dipole structural representation.
Fig. 5 is another perspective view of embodiment of the invention dual-band dual-polarized antenna.
Fig. 6 is embodiment of the invention dual-band dual-polarized antenna array perspective view.
Fig. 7 is another dual-band dual-polarized antenna array perspective view of the embodiment of the invention.
Fig. 8 is another dual-band dual-polarized antenna array perspective view of the embodiment of the invention.
Fig. 9 is the bass reflex charts for finned heat of emulation and the actual measurement of embodiment of the invention low frequency oscillator.
Figure 10 is the emulation of embodiment of the invention high frequency oscillator and the high frequency reflection coefficient chart of actual measurement.
Figure 11 is the low frequency directivity curve figure of the array emulation of embodiment of the invention dual-band dual-polarized antenna and actual measurement.
Figure 12 is the high frequency direction curve chart of the array emulation of embodiment of the invention dual-band dual-polarized antenna and actual measurement.
Embodiment
Below with reference to accompanying drawing the technical scheme of various embodiments of the present invention is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the present invention protects.
Existing broadband dual polarized antenna can't be supported the 700MHz frequency spectrum of LTE, so that application function is restricted.
In the embodiment of the invention, propose a kind of dual-band dual-polarized antenna, can cover simultaneously 2G, 3G and LTE frequency spectrum, namely working frequency range is the widest can cover 690～960/1710～2700MHz simultaneously.Thereby can be applicable to global system for mobile communications (GSM, Global System for Mobile communications), code division multiple access (CDMA, Code Division Multiple Access), Digital Cellular System (DCS, Digital Cellular System), person-to-person communication service (PCS, Personal Communication Service), TD SDMA (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access), Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access), the indoor and outdoor mobile communication network of the multiple types such as CDMA2000 and LTE and system, in order to compatible multiple types, the extended antenna application function.
Fig. 1 is embodiment of the invention dual-band dual-polarized antenna perspective view.
Fig. 2 is embodiment of the invention dual-band dual-polarized antenna master TV structure schematic diagram.
Fig. 3 is embodiment of the invention dual-band dual-polarized antenna plan structure schematic diagram.
Referring to Fig. 1, Fig. 2 and Fig. 3, in the embodiment of the invention, the dual-band dual-polarized antenna that covers 2G, 3G and LTE frequency band comprises: reflecting plate 1, low frequency oscillator 3, high frequency oscillator 7 and mixer 4, wherein, low frequency oscillator 3 comprises: the first half-wave dipole 31, the second half-wave dipole 32, the 3rd half-wave dipole 33 and the 4th half-wave dipole 34
In the embodiment of the invention, preferably, the quantity of high frequency oscillator 7 is more than one, take the orientation of high frequency oscillator 7 as horizontal direction, about correspondence, the direction that stands up high frequency oscillator 7 is vertical direction, about the correspondence, be fore-and-aft direction perpendicular to the direction of horizontal direction and vertical direction
The first half-wave dipole 31, the second half-wave dipole 32, the 3rd half-wave dipole 33 and the 4th half-wave dipole 34 stand up and are distributed on reflecting plate 1 end face, the first half-wave dipole 31 and the second half-wave dipole 32 quadratures, the first half-wave dipole 31 is parallel to the 3rd half-wave dipole 33, the second half-wave dipoles 32 and is parallel to the 4th half-wave dipole 34; The bottom of the first half-wave dipole 31 links to each other by the bottom of cable with the 3rd half-wave dipole 33, and be connected to the low frequency port of mixer 4, the bottom of the second half-wave dipole 32 links to each other by the bottom of cable with the 4th half-wave dipole 34, and is connected to the low frequency port of mixer 4;
High frequency oscillator 7 stands up the center in the first half-wave dipole 31, the second half-wave dipole 32, the 3rd half-wave dipole 33 and the 4th half-wave dipole 34 formation zones on reflecting plate 1 end face.Namely, high frequency oscillator 7 is installed in the center of fore-and-aft direction on the reflecting plate 1, low frequency oscillator 3 and high frequency oscillator 7 are distributed in reflecting plate 1 homonymy, and be connected to respectively low frequency port and the high frequency port of mixer 4, be about to the low frequency port that the low frequency oscillator is connected to mixer 4, with the high frequency port of high frequency vibrating sub-connection to mixer 4;
The low frequency port of mixer 4 and high frequency port link to each other with the radome of outside respectively, so that outside radome is by radio frequency connector, to the dual-band dual-polarized antenna feed.
In the embodiment of the invention, the high frequency oscillator adopts integrated dual polarization high frequency oscillator, about the detailed construction of high frequency oscillator, specifically can referring to the correlation technique document, not repeat them here.
In the practical application, the air microstrip structure can be adopted in the half-wave dipole bottom, thereby half-wave dipole is carried out feed.
Fig. 4 is embodiment of the invention half-wave dipole structural representation.Referring to Fig. 4, this half-wave dipole comprises: base 301, the first pillar 302, the second pillar 303, the first oscillator arms 304 and the second oscillator arms 305, wherein,
The top of the first pillar 302 links to each other with the first oscillator arms 304, and the top of the second pillar 303 links to each other with the second oscillator arms 305, is air dielectric between the first pillar 302 and the second pillar 303;
Base 301 is fixed on the reflecting plate 1, and the bottom of the first pillar 302 is unsettled, is connected to the low frequency port of mixer by cable, and the bottom of the second pillar 303 is fixed on the base 301;
In the embodiment of the invention, the right arm of the second pillar 303 top connected symmetrical dendrimer low frequency oscillators, i.e. the second oscillator arms 305, the bottom connects base, both as the ground of microstrip line, support the second oscillator arms 305 as supporting pillar again, the left arm of the first pillar 302 top connected symmetrical dendrimer low frequency oscillators, i.e. the first oscillator arms 304, the bottom is unsettled, as the main feeder of microstrip line, be connected to the low frequency port of mixer 4 by cable, air between the first pillar 302 and the second pillar 303, whole as the air microstrip structure, thus symmetrical half-wave dipole is carried out feed.
The first oscillator arms 304 and the second oscillator arms 305 are connected, and symmetry is positioned at the half-wave dipole top.
Preferably, the first pillar 302 and the second pillar 303 are the square metal post.
The terminal downward bending of the first oscillator arms 304 and the second oscillator arms 305.Certainly, in the practical application, the end of the first oscillator arms 304 and the second oscillator arms 305 makes progress, inwardly bending, with the overall dimensions of effective minimizing dual-band dual-polarized antenna.
Preferably, the distance between the first half-wave dipole 31 and the 3rd half-wave dipole 33 is 0.4～0.65 λ, and wherein, λ is the low-frequency range (wavelength that 690～960MHz) center frequency point are corresponding.
Fig. 5 is another perspective view of embodiment of the invention dual-band dual-polarized antenna.Referring to Fig. 5, in reflecting plate 1 bottom surface, dual-band dual-polarized antenna can further include: low frequency loop 8 and high frequency loop 9, wherein,
Preferably, the cable between the first loop and the second loop adopts the 35 Ω cables of 1/4 λ, is used for carrying out impedance matching; Other cables adopt 50 Ω cables.Like this, two half-wave dipoles that are parallel to each other, cable by the reflecting plate bottom surface is connected, in the access one-to-two feed groove, connect to form a polarization of low frequency oscillator with the cable of 50 Ω, and between the first loop and the second loop, be that the 35 Ω cables of 1/4 λ mate with length, thereby so that two half-wave dipoles high frequency oscillator identical with this half-wave dipole polarization that is parallel to each other forms one+45 ° polarization of dual-band dual-polarized antenna together, two half-wave dipoles another high frequency vibrating subgroup identical with this half-wave dipole polarization that other is parallel to each other become the another one-45 ° polarization in ° polarization of dual-band dual-polarized antenna ± 45.
In the embodiment of the invention, dual-band dual-polarized antenna can further include:
In the embodiment of the invention, director dipole can be one or more bonding jumper.The cross section of this bonding jumper can be square, rectangle, rhombus, triangle and other symmetric shape etc.
In the practical application, in order effectively to regulate radiation pattern, obtain suitable 3dB lobe width, dual-band dual-polarized antenna can further include:
In the embodiment of the invention, can baffle plate be set around the high frequency oscillator, baffle plate 2 stands up on reflecting plate 1, and high frequency oscillator 7 is built in the baffle plate 2, and baffle shapes can for symmetrical structures such as annular, square, triangles, also can be two strip metal plates parallel to each other.Baffle plate to regulate radiation pattern, obtains suitable 3dB lobe width mainly as the part of reflecting plate.
Preferably, dual-band dual-polarized antenna can further include:
Plastic medium plate 6 by being arranged on the fixed leg in the circular baffle plate 2, is fixed on the fixed leg top, can be used for antenna pattern is retrained.
In the embodiment of the invention, when a low frequency oscillator and a high frequency vibrating sub-portfolio, the high frequency oscillator is arranged on the reflecting plate center, and the low frequency oscillator distributes (centering on) around the high frequency oscillator, wherein,
The low frequency oscillator is made of four half-wave dipoles, at each half-wave dipole top, is provided with a metal director dipole, like this, and can the expansion low-frequency bandwidth;
In four half-wave dipoles, parallel to each other in twos, two half-wave dipoles that are parallel to each other form the low frequency symmetrical dipole, connect by cable, form a polarization of low frequency oscillator, two half-wave dipoles that are parallel to each other are connected to the low frequency port of mixer by cable; Other two half-wave dipoles that are parallel to each other connect by cable, form another polarization of low frequency oscillator, are connected to the low frequency port of mixer by cable, and four half-wave dipoles have formed frequently dual polarization vibrator; The high frequency oscillator identical with low frequency oscillator polarization namely is positioned at the high frequency oscillator of four half-wave dipole centers, and the high frequency port that is connected to mixer by cable closes the road.Like this, by mixer the high frequency oscillator of equipolarization and low frequency oscillator are closed the road to together, formed the double screen dual polarized antenna.
In the embodiment of the invention, the quantity of low frequency oscillator can for more than one, form the low frequency layered transducer elements; The quantity of high frequency oscillator can for more than one, form the high frequency vibrating subarray.
When the quantity of low frequency oscillator is 2, the quantity of described high frequency oscillator is more than 3, wherein, and between two low frequency oscillators, one or more high frequency oscillators are set, the equidistant or unequal-interval arranged in co-axial alignment of the high frequency oscillator in the high frequency oscillator between the two low frequency oscillators and the low frequency oscillator.
When the quantity of low frequency oscillator is 3 when above, equidistant arranged in co-axial alignment between the low frequency oscillator, between the high frequency oscillator equidistantly or the unequal-interval arranged in co-axial alignment.
For example, in the practical application, when having the above low frequency oscillators of two and two to form the low frequency layered transducer elements, high frequency oscillator and low frequency oscillator co-axial alignment, i.e. high frequency oscillator along continuous straight runs arrangement, the regional center that forms at the low frequency oscillator that is formed by four half-wave dipoles, embed a high frequency oscillator, between the two low frequency oscillators, one or two high frequency oscillator is set, the low frequency oscillator is equidistantly arranged, and the high frequency oscillator is also equidistantly arranged.
Preferably, apart from 0.6～1.2 times that is low-frequency range center frequency point corresponding wavelength, namely the low frequency element spacing is 0.6～1.2 λ between the adjacent two low frequency oscillators; The high frequency oscillator equidistantly or unequal-interval arrange, distance is 0.6～1.2 times of high frequency vibrating subcenter frequency corresponding wavelength between the adjacent two high frequency oscillators.The low-and high-frequency oscillator is connected to the outer prevention at radio-frequency port of antenna by feeder line respectively.
Fig. 6 is embodiment of the invention dual-band dual-polarized antenna array perspective view.Referring to Fig. 6, the embodiment of the invention shows two low frequency oscillators, the regional center that forms at the square low frequency oscillator that is formed by four half-wave dipoles, one high frequency oscillator is set, between the two low frequency oscillators, a high frequency oscillator is set, high frequency oscillator along continuous straight runs is arranged, the low frequency oscillator is coaxial with the high frequency oscillator, and the low frequency oscillator is equidistantly arranged, and the high frequency oscillator is also equidistantly arranged.
In the practical application, the pillar in the low frequency oscillator also can also be carried out bending, for example, inside or outside bending.
In the embodiment of the invention, by being divided, low frequency dual polarization vibrator and high-frequency bipolar oscillator be arranged, the low frequency oscillator is arranged on the outside of high frequency oscillator, can fully guarantee the spacing between the high frequency oscillator, reduce again the reflection of high frequency oscillator to low frequency signal, to guarantee every electric property of low frequency oscillator, thereby effectively reduce the interaction between the different frequency range, guarantee the electric property of each frequency range, expanded low-frequency range, expanded the antenna applications function.
Fig. 7 is another dual-band dual-polarized antenna array perspective view of the embodiment of the invention.Referring to Fig. 7, on reflecting plate 1, be symmetrical arranged two-layer rectangle baffle plate, two baffle plate symmetries of ground floor are positioned at around the high frequency oscillator, stand up on reflecting plate 1, the high frequency oscillator is built in the ground floor baffle plate, and two baffle plates of the second layer lay respectively at two baffle plate outsides that are positioned at ground floor, the first pillar 302 and the 303 inside bendings of the second pillar.Wherein, insulation isolation between high frequency oscillator and the reflecting plate.Preferably, the spacing between two baffle plates of ground floor is not less than the radiating aperture of low frequency oscillator, and the spacing between two baffle plates of the second layer is greater than the radiating aperture of high frequency oscillator.
In the practical application, two baffle plates of reflecting plate and ground floor and two baffle plates of the second layer can draw moulding with one.
Fig. 8 is another dual-band dual-polarized antenna array perspective view of the embodiment of the invention.Referring to Fig. 8, the embodiment of the invention shows two low frequency oscillators, the regional center that forms at the square low frequency oscillator that is formed by four half-wave dipoles, one high frequency oscillator is set, between the two low frequency oscillators, two high frequency oscillators is set, high frequency oscillator along continuous straight runs is arranged, the low frequency oscillator is coaxial with the high frequency oscillator, and the low frequency oscillator is equidistantly arranged, and the high frequency oscillator is also equidistantly arranged.
In the practical application, between high frequency oscillator, low frequency oscillator and the reflecting plate, partly or entirely be added with dielectric.Like this, that can avoid that face contacts between low-and high-frequency oscillator and the reflecting plate is discontinuous, causes the discontinuous of electric current, affects the antenna third order intermodulation.
The detailed operation flow process of the array antenna that forms about dual-band dual-polarized antenna and based on dual-band dual-polarized antenna specifically can referring to the correlation technique document, not repeat them here.
Fig. 9 is the bass reflex charts for finned heat of emulation and the actual measurement of embodiment of the invention low frequency oscillator.Referring to Fig. 9, solid line represents the bass reflex coefficient curve that emulation obtains, dotted line represents to survey the bass reflex coefficient curve that obtains, at low-frequency range (650MHz～1000MHz), the bass reflex coefficient of the dual-band dual-polarized antenna that emulation and actual measurement obtain, in whole frequency range, can satisfy S11＜～14dB, namely standing-wave ratio is less than 1.5.
Figure 10 is the emulation of embodiment of the invention high frequency oscillator and the high frequency reflection coefficient chart of actual measurement.Referring to Figure 10, solid line represents the high frequency reflection coefficient curve that emulation obtains, dotted line represents to survey the high frequency reflection coefficient curve that obtains, at high band (1.6GHz～2.8GHz), the high frequency reflection coefficient of the dual-band dual-polarized antenna that emulation and actual measurement obtain, in whole frequency range, can satisfy equally S11＜～14dB, namely standing-wave ratio is less than 1.5.
Figure 11 is the low frequency directivity curve figure of the array emulation of embodiment of the invention dual-band dual-polarized antenna and actual measurement.Referring to Figure 11, solid line represents to survey the low frequency direction value that obtains, and dotted line represents the low frequency direction value that emulation obtains.
Figure 12 is the high frequency direction curve chart of the array emulation of embodiment of the invention dual-band dual-polarized antenna and actual measurement.Referring to Figure 12, solid line represents to test the high frequency direction value that obtains, and dotted line represents the high frequency direction value that emulation obtains.
As seen by above-mentioned, the dual-band dual-polarized antenna of the embodiment of the invention is applicable to transmission of wireless signals and covering under the indoor and outdoor cell mobile communication systems demand.The support frequency range is 690～960/1710～2700MHz, adopt ± 45 ° of dual polarization forms, polarization isolation is greater than 28dB, and frequency range is applicable to the multiple types such as GSM, CDMA, DCS, PCS, TD～SCDMA, WCDMA, CDMA2000 and LTE, has expanded the antenna applications function.
The low frequency dual polarization vibrator of the embodiment of the invention and high-frequency bipolar oscillator be design separately, the low frequency oscillator is arranged on the outside of high frequency oscillator, the high frequency oscillator is arranged on the reflecting plate center, namely in the middle of the low frequency oscillator, embed the high frequency oscillator, and the low frequency oscillator is overlapped with the high frequency vibrating subcenter, then, utilize mixer, like-polarized high frequency oscillator and low frequency oscillator output port are combined into a wideband port (high frequency port and low frequency port), draw outside the radome by coaxial cable, by radio frequency connector to its feed.
In the embodiment of the invention, the combination of a high frequency oscillator and a low frequency oscillator, can be used as indoor distributed system antenna or low gain platelet-like antenna uses, the combination of two above high frequency oscillators and two above low frequency oscillators, be after the low-and high-frequency oscillator respectively uses two or more to make up, can be used as two band dual polarization antenna for base station and use, effectively expanded the application function of antenna.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also comprises these changes and modification interior.
Claims (15)
1. dual-band dual-polarized antenna, it is characterized in that this dual-band dual-polarized antenna comprises: reflecting plate, low frequency oscillator, high frequency oscillator and mixer, wherein, the low frequency oscillator comprises: the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole
The first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole stand up and are distributed on the reflecting plate end face, the first half-wave dipole and the second half-wave dipole quadrature, the first half-wave dipole is parallel to the 3rd half-wave dipole, and the second half-wave dipole is parallel to the 4th half-wave dipole;
The bottom of the first half-wave dipole links to each other by the bottom of cable with the 3rd half-wave dipole, and is connected to the low frequency port of mixer, and the bottom of the second half-wave dipole links to each other by the bottom of cable with the 4th half-wave dipole, and is connected to the low frequency port of mixer;
The high frequency oscillator stands up the center that on the reflecting plate end face the first half-wave dipole, the second half-wave dipole, the 3rd half-wave dipole and the 4th half-wave dipole form the zone, is connected to the high frequency port of mixer by cable;
The low frequency port of mixer and high frequency port link to each other with the radome of outside respectively.
2. dual-band dual-polarized antenna according to claim 1 is characterized in that, described the first half-wave dipole comprises: base, the first pillar, the second pillar, the first oscillator arms and the second oscillator arms, wherein,
The top of the first pillar links to each other with the first oscillator arms, and the top of the second pillar links to each other with the second oscillator arms, is air dielectric between the first pillar and the second pillar;
Base is fixed on the reflecting plate, and the bottom of the first pillar is unsettled, is connected to the low frequency port of mixer by cable, and the bottom of the second pillar is fixed on the base;
The first oscillator arms and the second oscillator arms are connected, and symmetry is positioned at the half-wave dipole top.
3. dual-band dual-polarized antenna according to claim 2 is characterized in that, described the first pillar and the second pillar are the square metal post.
4. dual-band dual-polarized antenna according to claim 3 is characterized in that, the end of described the first oscillator arms and the second oscillator arms makes progress, downward or inside bending;
Described the first pillar and the inside bending of the second pillar.
5. dual-band dual-polarized antenna according to claim 4 is characterized in that, the distance between described the first half-wave dipole and the 3rd half-wave dipole is 0.4～0.65 λ, and wherein, λ is wavelength corresponding to low-frequency range center frequency point.
6. dual-band dual-polarized antenna according to claim 5 is characterized in that, described dual-band dual-polarized antenna further comprises: low frequency loop and high frequency loop, wherein,
The low frequency loop, be arranged at the reflecting plate bottom surface, comprise: the first loop and the second loop, wherein, the first interface of the first loop links to each other by a half-wave dipole bottom in four half-wave dipoles of cable and low frequency oscillator, the parallel half-wave dipole bottom of the half-wave dipole that the second interface links to each other with described first interface by cable links to each other, the 3rd interface links to each other by the input port of cable with the second loop, and the output port of the second loop links to each other with the low frequency port of mixer by cable;
The high frequency loop is arranged at the reflecting plate bottom surface, and input port links to each other by the bottom of cable with the high frequency oscillator, and output port is connected with the high frequency port of mixer.
7. dual-band dual-polarized antenna according to claim 6 is characterized in that, the cable between described the first loop and the second loop adopts the 35 Ω cables of 1/4 λ; Other cables adopt 50 Ω cables.
8. according to claim 1 to 5 each described dual-band dual-polarized antennas, it is characterized in that described dual-band dual-polarized antenna further comprises:
Director dipole is arranged at respectively the top of four half-wave dipoles of low frequency oscillator, links to each other with half-wave dipole by lead-in wire.
9. dual-band dual-polarized antenna according to claim 8 is characterized in that, described director dipole is one or more bonding jumper.
10. according to claim 1 to 5 each described dual-band dual-polarized antennas, it is characterized in that described dual-band dual-polarized antenna further comprises:
Baffle plate is arranged between low frequency oscillator and the high frequency oscillator, is fixed on the reflecting plate end face.
11. dual-band dual-polarized antenna according to claim 10 is characterized in that, described baffle shapes is annular, square or triangle.
12. dual-band dual-polarized antenna according to claim 10 is characterized in that, described dual-band dual-polarized antenna further comprises:
The plastic medium plate by being arranged on the fixed leg in the circular baffle plate, is fixed on the fixed leg top.
13. to 5 each described dual-band dual-polarized antennas, it is characterized in that according to claim 1 the quantity of described low frequency oscillator is more than one, the quantity of described high frequency oscillator is more than one.
14. dual-band dual-polarized antenna according to claim 13, it is characterized in that, the quantity of described low frequency oscillator is 2 o'clock, the quantity of described high frequency oscillator is more than 3, wherein, between two low frequency oscillators, one or more high frequency oscillators are set, the equidistant or unequal-interval arranged in co-axial alignment of the high frequency oscillator in the high frequency oscillator between the two low frequency oscillators and the low frequency oscillator.
15. dual-band dual-polarized antenna according to claim 14 is characterized in that, distance is 0.6～1.2 times of high frequency vibrating subcenter frequency corresponding wavelength between the adjacent two described high frequency oscillators.
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| CN2013100031414A CN103036073A (en) | 2013-01-05 | 2013-01-05 | Dual-frequency dual-polarized antenna |
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| CN2013100031414A CN103036073A (en) | 2013-01-05 | 2013-01-05 | Dual-frequency dual-polarized antenna |
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| CN109301462A (en) * | 2018-09-06 | 2019-02-01 | 深圳大学 | Double-wide-surface magnetoelectric dipole base station antenna applied to 5G communication |
| CN109449607B (en) * | 2018-11-06 | 2024-02-23 | 华南理工大学 | Dual-frequency dual-polarized antenna |
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Application publication date: 20130410 |