The content of the invention
Based on this, it is necessary to provide a kind of dual-band antenna of good stability, also provide a kind of Wireless Telecom Equipment.
A kind of dual-band antenna, including：Dielectric-slab；Feed end, is arranged on the dielectric-slab；First dipole antenna, ifPut on the dielectric-slab；First dipole antenna includes the first Department of Radiation and the first grounding parts；First Department of RadiationExtended round about as starting point with the feed end with first grounding parts；First dipole antenna is used as firstThe radiating doublet of frequency range；And second dipole antenna, it is arranged on the dielectric-slab；Second dipole antenna includes theTwo Departments of Radiation and the second grounding parts；Second Department of Radiation and second grounding parts are starting point to opposite with the feed endDirection extends, and the bearing of trend of second Department of Radiation is vertical with the bearing of trend of first Department of Radiation；Described second is evenPole sub-antenna as the second frequency range radiating doublet；Wherein, first dipole antenna constitutes positive 45 degree of polarized dipoles dayLine and the minus 45 degree of polarized dipole and electrical sub-antennas of second dipole antenna composition, or first dipole antenna composition minus 45Degree polarized dipole and electrical sub-antenna and the positive 45 degree of polarized dipole and electrical sub-antennas of second dipole antenna composition.
Above-mentioned dual-band antenna, the first dipole antenna and the second dipole antenna constitute ± 45 degree of cross polarization double frequencies dayLine, can effectively reduce influencing each other between two frequency ranges.Meanwhile, the first Department of Radiation of the first dipole antenna and first connectsGround portion extends round about by starting point of feed end, and second Department of Radiation and the second grounding parts of the second dipole antenna are also with feedbackElectric end extends round about for starting point, so that it is guaranteed that antenna has radiation efficiency higher, while the can further be reducedInfluencing each other between one dipole antenna and the second dipole antenna, and then effectively increase the stability of antenna.
Wherein in one embodiment, first Department of Radiation is identical with the structure of first grounding parts and on describedFeed end is centrosymmetric structure.
Wherein in one embodiment, first Department of Radiation includes the first radiating element, the second radiation that are sequentially connected withUnit and the 3rd radiating element；One end of first radiating element is connected with the feed end；First radiating element withSecond radiating element is set in 45 degree of angles；3rd radiating element is set perpendicular to second radiating element；It is described3rd radiating element and first radiating element may be contained within the same side of second radiating element.
Wherein in one embodiment, first dipole antenna is half wavelength dipoles sub-antenna；First radiation/ 8th of the length of unit more than the first frequency range corresponding wavelength.
Wherein in one embodiment, second Department of Radiation is identical with the structure of second grounding parts and on describedFeed end is centrosymmetric structure.
Wherein in one embodiment, second Department of Radiation with the feed end be starting point in flaring shape and in end shapeInto drift angle structure.
Wherein in one embodiment, first Department of Radiation is connected with second Department of Radiation and constitutes irradiation structure；InstituteState the first grounding parts be connected with second grounding parts composition ground structure；The irradiation structure and the ground structure are describedThe gap with predetermined width is left at feed end position.
Wherein in one embodiment, first dipole antenna and second dipole antenna are by conduction materialThe antenna structure that material is prepared from, and it is formed with protective layer on the antenna structure surface.
Wherein in one embodiment, first frequency range and second frequency range are WiFi double frequencies, GSM double frequencies and CDMAOne kind in double frequency.
A kind of Wireless Telecom Equipment, including apparatus body, also including the dual-band antenna as described in foregoing any embodiment.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and ExamplesThe present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, andIt is not used in the restriction present invention.
Fig. 1 is the structural representation of the dual-band antenna in an embodiment, and the dual-band antenna includes dielectric-slab 100, feed end200th, the first dipole antenna and the second dipole antenna.First dipole antenna as the first frequency range radiating doublet, secondDipole antenna as the second frequency range radiating doublet.Wherein, the first frequency range and the second frequency range have different frequency ranges, fromAnd another is relative for high band relatively for low-frequency range to cause one of them.First frequency range and the second frequency range can be double for WiFiFrequently, or GSM double frequencies or CDMA double frequencies, so as to meet the use demand of Wireless Telecom Equipment.In the present embodiment, it is doubleFrequency antenna is WiFi dual-band antennas, namely the first frequency range of the first dipole antenna work is 2.4GHz frequency ranges, the second dipoleSecond frequency range of Antenna Operation is 5GHz frequency ranges.
Dielectric-slab 100 is used as dual-band antenna carrier.In the present embodiment, dielectric-slab 100 is rectangle, and with its lengthDirection is horizontal direction, and width is vertical direction.To being limited only to horizontally and vertically in the present embodimentFacilitate subsequent descriptions, do not constitute the limitation in itself to technical scheme.
Feed end 200 is arranged on dielectric-slab 100, for the signal transmission that exports radio-frequency module to the first dipole dayOn line and the second dipole antenna, or receive the signal that the first dipole antenna and the transmission of the second dipole antenna come.At thisIn embodiment, feed end 200 is arranged at the center of dielectric-slab 100.
First dipole antenna includes the first Department of Radiation 310 and the first grounding parts 320.Wherein, the first Department of Radiation 310 andOne grounding parts 320 with feed end 200 for starting point extends round about, so as to improve antenna radiation efficiency while reduceInfluencing each other between antenna.In the present embodiment, the first dipole antenna is half wavelength dipoles sub-antenna, and is positive 45 degree of poleChange dipole antenna.That is, the bearing of trend of the first Department of Radiation 310 is set with the horizontal direction of dielectric-slab 100 in positive 45 degree of angles.
In one embodiment, the first Department of Radiation 310 in the first dipole antenna is identical with the structure of the first grounding parts 320And be centrosymmetric structure on feed end 200.Therefore below only by taking the first Department of Radiation 310 as an example to the He of the first Department of Radiation 310The structure of the first grounding parts 320 is described in further details.Referring to Fig. 1, the first Department of Radiation 310 includes the first spoke being sequentially connectedPenetrate unit 312, the second radiating element 314 and the 3rd radiating element 316.Wherein, one end of the first radiating element 312 and feed end200 connections.First radiating element 312 and the second radiating element 314 are set in 45 degree of angles.In the present embodiment, the first radiationUnit 312 is in positive 45 degree, horizontal direction of second radiating element 314 parallel to dielectric-slab 100 with the horizontal direction of dielectric-slab 100Set.Then vertical second radiating element 314 is set 3rd radiating element 316, and is arranged in the lump with the first radiating element 312The same side of two radiating elements 314.Namely the 3rd radiating element 316 parallel to dielectric-slab 100 vertical direction set.Due toOne dipole antenna be half wavelength dipoles sub-antenna, namely the first Department of Radiation 310 length (from feed end to the length of another endDegree) it is a quarter of corresponding frequency band wavelength.In the present embodiment, the length of the first radiating element 312 should be more than the wavelength1/8th, with ensure the electric current in the first dipole antenna and the second dipole antenna mutually be in 45 degree.
Second dipole antenna includes the second Department of Radiation 410 and the second grounding parts 420.Second Department of Radiation 410 and second connectsGround portion 420 with feed end 200 for starting point extends round about, so as to improve antenna radiation efficiency while reduce antennaBetween influence each other.In the present embodiment, the second dipole antenna is similarly half wavelength dipoles sub-antenna, and is minus 45 degree of poleChange dipole antenna.Namely second the horizontal direction of bearing of trend and dielectric-slab 100 of Department of Radiation 410 hand over settings in minus 45 degree.
In one embodiment, the second Department of Radiation 410 in the second dipole antenna is identical with the structure of the second grounding parts 420And be centrosymmetric structure on feed end 200.Therefore below only by taking the second Department of Radiation 410 as an example to the He of the second Department of Radiation 410The structure of the second grounding parts 420 is described in further details.Referring to Fig. 1, the second Department of Radiation 410 is perpendicular to the first radiating element310 are set, namely the second Department of Radiation 410 is set with the horizontal direction of dielectric-slab 100 in minus 45 degree of angles.Second Department of Radiation 410 withFeed end 200 is that starting point forms drift angle structure in flaring shape and in end.It is adjusted by the structure to the second Department of Radiation 410The adjustment to its working frequency range can be realized.The working frequency range of the second dipole antenna is different from the work of the first dipole antennaFrequency range, therefore the antenna length of the antenna length of the second dipole antenna and the first dipole antenna and differ.In the present embodimentIn, the second Department of Radiation 410 is a quarter of corresponding frequency band wavelength, so that the second dipole antenna constitutes half-wave symmetry shakingSub-antenna.
In one embodiment, the first Department of Radiation 310 is connected with the second Department of Radiation 410, the irradiation structure being integrally formed.FirstGrounding parts 320 are connected with the second grounding parts 420, the ground structure being integrally formed.Irradiation structure and ground structure are in feed end 200Position at leave the gap of predetermined width a, to prevent solder shorts problem from occurring.Predetermined width a can be carried out as neededSetting.
In one embodiment, the first dipole antenna and the second dipole antenna cover copper to realize using dielectric-slab 100,Namely first dipole antenna and the second dipole antenna constituted by conductor material copper.In other examples, first is evenPole sub-antenna and the second dipole antenna can also be prepared from using other conductive materials.In the present embodiment, the first dipoleThe surface of sub-antenna and the second dipole antenna is also coated with protective layer, for preventing copper from aoxidizing.Protective layer can be tin coatingOr green oil layer.
In other examples, the first dipole antenna and the second dipole antenna can with location swap so thatFirst dipole antenna constitutes minus 45 degree of polarized dipole and electrical sub-antennas, and the second dipole antenna then constitutes positive 45 degree of polarized dipolesAntenna.
Above-mentioned dual-band antenna, the first dipole antenna and the second dipole antenna constitute ± 45 degree of cross polarization double frequencies dayLine, can effectively reduce influencing each other therebetween.Meanwhile, the first Department of Radiation 310 of the first dipole antenna and first connectsWith feed end 200 for starting point extends round about, the second Department of Radiation 410 of the second dipole antenna and second connects in ground portion 320Ground portion 420 is also with feed end 200 for starting point extends round about, so that it is guaranteed that antenna has radiation efficiency higher, whileInfluencing each other between the first dipole antenna and the second dipole antenna can be further reduced, and then effectively increases antennaStability.Also, the first dipole antenna and the second dipole antenna in dual-band antenna are arranged at same dielectric-slab 100On, antenna can be saved and taken up room.
Fig. 2 is the return loss analogous diagram of the dual-band antenna in Fig. 1.From figure 2 it can be seen that two echoes of frequency range are damagedConsumption is relatively low, namely S parameter is relatively stable, the very little that influences each other between the first dipole antenna and the second dipole antenna.Fig. 3 is operated in gain shape figure during 2.4GHz for the dual-band antenna in Fig. 1, and Fig. 4 is that the dual-band antenna in Fig. 1 is operated in 5GHzWhen gain shape figure.Again it can be seen that the interference in dual-band antenna between each dipole antenna is smaller from Fig. 3 and Fig. 4,Overall performance is relatively stable.
A kind of Wireless Telecom Equipment is also provided, it includes apparatus body, with optimized integration function.The Wireless Telecom Equipment is alsoIncluding the dual-band antenna described in foregoing any embodiment, so as to meet dual band communication function.Due to dual-band antenna stability compared withIt is good, so that the communication stability of Wireless Telecom Equipment is preferable.Also, the first dipole antenna and second in dual-band antennaDipole antenna is arranged on same dielectric-slab 100, is taken up room such that it is able to save antenna, is beneficial to and is realized radio communicationThe miniaturization of equipment.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned realityApply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not depositedIn contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneouslyCan not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the artSay, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the inventionScope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.