CN204741080U - Antenna device - Google Patents
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- CN204741080U CN204741080U CN201520353333.2U CN201520353333U CN204741080U CN 204741080 U CN204741080 U CN 204741080U CN 201520353333 U CN201520353333 U CN 201520353333U CN 204741080 U CN204741080 U CN 204741080U
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Abstract
The utility model discloses an antenna device, including first radiating antenna, second radiating antenna and reflecting plate, first radiating antenna is vertical to be placed the reflecting plate top, the second radiating antenna run through perpendicularly in first radiating antenna, wherein, the second radiating antenna is close to the reflecting plate and with the reflecting plate is parallel. This antenna device utilizes the design of radiation structure to realize two frequency of operation and MIMO structure and directed radiation, and the design that utilizes first radiating antenna and the different orientations of second radiating antenna has improved the isolation of sky space to can improve communication stability and data transmission rate when reducing the antenna size.
Description
Technical field
The utility model relates to antenna technical field, relates more specifically to antenna assembly.
Background technology
At present, traditional all-around top absorbing antenna design be all pursue direction of improving the standard gain to expand vertical direction beamwidth, thus the region that under making the constant situation of equipment power output, signal can cover is wider.But have with scientific and technological progress and support that the crowd of WiFi and WLAN handheld device sharply increases, to also increasing by the demand of wireless WiFi or WLAN online, therefore have many places all to carry out wireless layouting and carry out wireless signal covering, and carry out in the place that flow of the people is relatively intensive wireless signal cover produce extreme difficulties.Because of crowded, number of netizens in single wireless AP devices institute overlay area can be increased severely, access number of netizens because single AP supports that access client terminal quantity is limited will exceed AP load too much and cause deadlock to be restarted, thus often will increase many several AP equipment than general place in same area in these crowded places and just can satisfy the demands.Find actual building when equipment network is tested, multiple AP all use the ceiling mount antenna of traditional high-gain broad beam can cause the wireless signal of multiple AP cover region nearly all overlap the co-channel interference that makes signal between each AP and adjacent frequency interference very serious, signal quality becomes very poor impact use.Head it off must stagger the signal coverage areas of each AP, namely the external radiation signal scope of antenna will diminish, but range of signal diminishes and can only narrow vertical direction beamwidth and make signal concentrate on downward radiation below antenna, so newly will design the downward ceiling mount antenna of special narrow beam for this demand.
Utility model content
The purpose of this utility model is to provide a kind of antenna assembly that can add the directional technology of reflecting surface in conjunction with double frequency technology, Yagi spark gap directional technology and dual path dipole.
According to one side of the present utility model, a kind of antenna assembly is provided, comprise the first radiating antenna, the second radiating antenna and reflecting plate, described first radiating antenna is vertically placed on above described reflecting plate, described second radiating antenna is vertically through described first radiating antenna, wherein, described second radiating antenna is parallel with described reflecting plate near described reflecting plate.
Preferably, described first radiating antenna comprises first medium substrate, is positioned at the first irradiation structure of a side surface of described first medium substrate, the first ground plate and the first feed line, and the second radiating antenna comprises the second medium substrate vertically running through described first medium substrate, the second irradiation structure, the second ground plate and the second feed line be positioned on described second medium substrate.
Preferably, described first medium substrate is vertically installed in above described reflecting plate, described second medium substrate vertically runs through described first medium substrate, described first irradiation structure and described first ground plate are all in step-like, and respective step part is close to each other and identical, described second irradiation structure and described second ground plate positioned opposite to each other on two surfaces of second medium substrate, and described second ground plate be arranged on described second medium substrate with described first irradiation structure away from surface on, be positioned at the side of described first irradiation structure, described second irradiation structure be arranged on second medium substrate another on the surface, be positioned at the opposite side that described first irradiation structure is relative, first feed line connects the distributing point of the first irradiation structure and the first ground plate, second feed line connects the distributing point of the second irradiation structure and the second ground plate.
Preferably, described first radiating antenna also comprises and being positioned on described first medium substrate and identical the first director of structure and the second director, wherein, described first director and the second director are all parallel to the plane at described first irradiation structure and the first ground plate place, and to be disposed on successively on described first medium substrate and away from described first medium substrate by the position run through.
Preferably, described first irradiation structure comprises the first short portion of radiation and the first radiation long portion, and the described first short portion of radiation superposes with described first radiation long portion mutually with common forming station scalariform.
Preferably, described first irradiation structure also comprises the first slotted eye, and described first slotted eye extends to the other one end near the described first short portion of radiation from the one end near described first radiation long portion.
Preferably, described first ground plate comprises the first short portion of ground connection and the first ground connection long portion, and the described first short portion of ground connection superposes with described first ground connection long portion mutually with common forming station scalariform.
Preferably, described first ground plate also comprises the second slotted eye, and described second slotted eye extends to the other one end near described first ground connection long portion from the one end near the described first short portion of ground connection.
Preferably, described first slotted eye and described second slotted eye form splayed jointly.
Preferably, the length of described first radiation long portion and the length sum of described first ground connection long portion are 1/2nd of the first resonate frequency wavelength.
Preferably, the length in the described first short portion of radiation and the length sum in the described first short portion of ground connection are 1/2nd of the second resonate frequency wavelength.
Preferably, described second irradiation structure is chevron, comprise the second radiation long portion, the first radiation branch, the second radiation branch and the first connecting portion, described first radiation branch and the second radiation branch are symmetricly set on the both sides of the second radiation long portion, and described first connecting portion connects one end of one end of described second radiation long portion, one end of described first radiation branch and described second radiation branch.
Preferably, align with one end of described second radiation long portion in one end of described first radiation branch, one end of described second radiation branch, the other end non-alignment of the other end of described first radiation branch, the other end of described second radiation branch and described second radiation long portion.
Preferably, described second ground plate is mountain font, comprise the second ground connection long portion, the first ground connection branch, the second ground connection branch and the second connecting portion, described first ground connection branch and described second ground connection branch are symmetricly set on described second ground connection long portion both sides, and described second connecting portion connects one end of one end of described second ground connection long portion, one end of described first ground connection branch and described second ground connection branch.
Preferably, align with one end of described second ground connection long portion in one end of described first ground connection branch, one end of described second ground connection branch, the other end non-alignment of the other end of described first ground connection branch, the other end of described second ground connection branch and described second ground connection long portion.
Preferably, the projection of described second irradiation structure on the opposite flank of described second medium substrate and described second ground plate symmetrical.
Preferably, the length of described second radiation long portion and the length sum of the second ground connection long portion are 1/2nd of the first resonate frequency wavelength, and the length of described first radiation branch and the length sum of the first ground connection branch are 1/2nd of the second resonate frequency wavelength.
Preferably, the distance between described first irradiation structure and described reflecting plate is greater than 1/8th of the first resonate frequency wavelength.
Preferably, the distance between described second irradiation structure and described reflecting plate is greater than 1/4th of the second resonate frequency wavelength.
Preferably, described first director and the second director are rectangle, and length is 2/5ths of the first resonate frequency wavelength.
Preferably, the distance between described first director and described first irradiation structure is 1/2nd of the second resonate frequency wavelength.
Preferably, the spacing between described first director and the second director is 1/4th of the first resonate frequency wavelength.
Preferably, the maximum length and width of the size of described reflecting plate are all greater than the first resonate frequency wavelength.
Antenna assembly of the present utility model utilizes the design of irradiation structure to achieve two operating frequencies and directed radiation, utilize the design of ground unit to improve isolation between antennae, thus improve communication stability and message transmission rate while antenna size can being reduced again.The resonance that this antenna utilizes specific irradiation structure to realize two frequency ranges and the directional technology utilizing Yagi spark gap directional technology and dual path dipole to add reflecting surface reach and narrow wave beam simultaneously and to make in signal radiation direction set downwards.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the utility model embodiment, above-mentioned and other objects of the present utility model, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 a-Fig. 1 c is the structural upright schematic diagram watched from different directions according to antenna assembly of the present utility model;
Fig. 2 is the front view at the radiating antenna adopted in antenna assembly;
Fig. 3 a-Fig. 3 d is the structural upright schematic diagram watched from different directions of the radiating antenna adopted in antenna assembly and the vertical view of radiating antenna and cutaway view;
Fig. 4 is the curve chart of voltage standing wave ratio with frequency change of antenna assembly;
Fig. 5 is the curve chart of S parameter value with frequency change of antenna assembly;
Fig. 6 is the antenna pattern of antenna assembly under 2450MH; And
Fig. 7 is the antenna pattern of antenna assembly under 5500MHz.
Embodiment
Below in conjunction with accompanying drawing, several preferred embodiment of the present utility model is described in detail, but the utility model is not restricted to these embodiments.The utility model contain any make in spirit and scope of the present utility model substitute, amendment, equivalent method and scheme.
To have the utility model to make the public and understand thoroughly, in following the utility model preferred embodiment, describe concrete details in detail, and do not have the description of these details also can understand the utility model completely for a person skilled in the art.
Fig. 1 a-1c is the structural upright schematic diagram according to antenna assembly of the present utility model, and wherein Fig. 1 a illustrates the schematic perspective view from dead ahead viewing, and Fig. 1 b illustrates the schematic perspective view from proceeds posterolateral viewing, and Fig. 1 c illustrates the schematic perspective view from side-lower viewing.Antenna assembly comprises the first radiating antenna and the second radiating antenna, and wherein the first radiating antenna comprises first medium substrate 100, is positioned at the first irradiation structure 200, first ground plate 300, first feed line 400 of a side surface of first medium substrate 100; Second radiating antenna comprises the second medium substrate 500 vertically running through first medium substrate 100, the second irradiation structure 600, second ground plate 700, second feed line 800 be positioned on second medium substrate 500; This antenna assembly also comprises vertically and the reflecting plate 900 be positioned at below first medium substrate 100.
First medium substrate 100 and second medium substrate 400 are such as made up of with the compound of described epoxy resin generation cross-linking reaction glass-fiber-fabric, epoxy resin and comprising.Irradiation structure and ground plate are such as formed by the metal level of patterning, or are formed by electrically conductive ink printing.Metal level can be made up of the one be selected from gold, silver, copper, aluminium or iron.Preferably, metal level is made up of copper, to take into account cost and the performance of antenna.First feed line 400 and the second feed line 800 are such as coaxial line, for the dipole FD feed to the first irradiation structure 200 and the second irradiation structure 600.Reflecting plate 900 such as metallic plate, medium cover copper metallic plate, plastic cement plated metal plate, by the radiation reflective of the first irradiation structure 200 and the second irradiation structure 600 to contrary direction.
Described first radiating antenna is vertically placed on above described reflecting plate 900, and described second radiating antenna is vertically through described first radiating antenna, and wherein, described second radiating antenna is near described reflecting plate 900 and parallel with described reflecting plate 900.
Described first medium substrate 100 is vertically installed in above described reflecting plate 900, described second medium substrate 500 vertically runs through described first medium substrate 100, described first irradiation structure 200 and described first ground plate 300 are all in step-like, and respective step part is close to each other and identical, described second irradiation structure 600 and described second ground plate 700 positioned opposite to each other on two surfaces of second medium substrate, and described second ground plate 700 be arranged on described second medium substrate 500 with described first irradiation structure 200 away from surface on, be positioned at the side of described first irradiation structure 200, described second irradiation structure 600 be arranged on second medium substrate 500 another on the surface, be positioned at the opposite side that described first irradiation structure 200 is relative, first feed line 400 connects the distributing point of the first irradiation structure 200 and the first ground plate 300, second feed line 800 connects the distributing point of the second irradiation structure 600 and the second ground plate 700.
In the present embodiment, the first irradiation structure 200 and the first ground plate 300 are all in step-like and close to each other with the overlapping complimentary fashion that staggers.
In a preferred embodiment, the distance between described first irradiation structure and described reflecting plate is greater than 1/8th of the first resonate frequency wavelength.
In a preferred embodiment, the distance between described second irradiation structure and described reflecting plate is greater than 1/4th of the second resonate frequency wavelength.
In a preferred embodiment, described reflecting plate is any geometric figure, and the maximum length and width of its size are all greater than the first resonate frequency wavelength.
Fig. 2 is the front view of the radiating antenna adopted in antenna assembly.As the first radiating antenna in Fig. 1.First radiating antenna comprises first medium substrate 100, is positioned at the first irradiation structure 200, first ground plate 300, first feed line 400 of a side surface of first medium substrate 100.
First irradiation structure 200 comprises the first short portion 22 of radiation and the first radiation long portion 21, the first short portion of radiation 22 superposes with common forming station scalariform with the first radiation long portion 21 mutually, wherein, align with one end of the first radiation long portion 21 in the one end in the first short portion 22 of radiation, the other end in the first short portion 22 of radiation and the other end non-alignment of the first radiation long portion 21.First irradiation structure 200 also comprises the first slotted eye 23, first slotted eye 23 extends to the other one end near the first short portion of radiation 22 from the one end near the first radiation long portion 21, wherein, one end of first radiation long portion 21 and the other one end in the short portion of the first radiation 22 are diagonal position and diagonal angle end each other, and the bearing of trend of the first slotted eye 23 is consistent with the line direction of this pair diagonal angle end.
First ground plate 300 comprises the first short portion 31 of ground connection and the first ground connection long portion 32, the first short portion of ground connection 31 superposes with common forming station scalariform with the first ground connection long portion 32 mutually, wherein, align with one end of the first ground connection long portion 32 in the one end in the first short portion 31 of ground connection, the other end in the first short portion 31 of ground connection and the other end non-alignment of the first ground connection long portion 32.First ground plate 300 also comprises the second slotted eye 33, second slotted eye 33 extends to the other one end near the first ground connection long portion 32 from the one end near the first short portion of ground connection 31, wherein, the one end in the first short portion of ground connection 31 and other one end of the first ground connection long portion 32 are diagonal position and diagonal angle end each other, and the bearing of trend of the second slotted eye 33 is consistent with the line direction of this pair diagonal angle end.First slotted eye 23 and the second slotted eye 33 form splayed jointly.
In the present embodiment, first irradiation structure 200 and the first ground plate 300 close to each other with the overlapping complimentary fashion that staggers, namely the first radiation long portion 21 of the first irradiation structure 200 and the first short portion of ground connection 31 of the first ground plate 300 close to each other in the same horizontal line, the first short portion of radiation 22 of the first irradiation structure 200 is close to each other on a parallel other horizontal line with the first ground connection long portion 32 of the first ground plate 300, wherein, profile lays respectively on these a pair parallel lines in two long limits of the first radiating antenna 200 of middle fluting rectangle.In the present embodiment, this overlapping complimentary fashion that the staggers frequency range being more conducive to adjusting antenna close to each other that the first irradiation structure 200 and the first ground plate 300 adopt, also helps assembly welding feed line simultaneously.
In the present embodiment, when the length of antenna is 1/2 of electromagnetic wave signal wavelength, the transmitting and receiving of antenna are most effective.The length of the first radiation long portion 21 of the first radiating antenna 200 and the length sum of the first ground connection long portion 32 are roughly 1/2nd of the first resonate frequency wavelength, the length in the first short portion of radiation 22 and the length sum in the short portion 31 of the first ground connection are roughly 1/2nd of the second resonate frequency wavelength, and the transmitting and receiving of antenna are most effective.In the present embodiment, in antenna assembly, the working frequency range of each radiating antenna is 2.4GHz-2.48GHz and 5GHz-5.8GHz, the first resonance frequency is now located in the working frequency range of 2.4GHz-2.48GHz, and the second resonance frequency is located in the working frequency range of 5GHz-5.8GHz.
In the present embodiment, the response of the length major effect antenna low-frequency range of the first radiation long portion 21 and the first ground connection long portion 32, the response of the length major effect antenna high band in the first short portion of radiation 22 and the short portion 31 of the first ground connection.Therefore, by regulating the length in the first radiation long portion 21 and the short portion of the first radiation 22 and the first ground connection long portion 32 and the short portion 31 of the first ground connection, dual frequency radiation characteristic can be realized.
In a preferred embodiment, the first radiating antenna also comprises the first director 201 and the second director 202 be arranged on first medium substrate 100 same side.First director 201 and the second director 202 are rectangle, and the first director 201, second director 202 is rectangle, and length is 2/5ths of the first resonate frequency wavelength.
Spacing between first director 201, second director 202 is 1/4th of the first resonate frequency wavelength.
Distance between first director 201 and described first irradiation structure 200 is 1/2nd of the second resonate frequency wavelength.
Fig. 3 a-Fig. 3 d is the structural upright schematic diagram watched from different directions of the radiating antenna adopted in antenna assembly and the vertical view of radiating antenna and cutaway view.Wherein, Fig. 3 a illustrates the schematic perspective view from top viewing, and Fig. 3 b illustrates the schematic perspective view watched from below, and Fig. 3 c shows the vertical view of the second radiating antenna, and Fig. 3 d shows the cutaway view of the second radiating antenna.As the second radiating antenna in Fig. 1, the second radiating antenna comprises second medium substrate 500, the second irradiation structure 600, second ground plate 700, second feed line 800 be positioned on second medium substrate 500.Second medium substrate 500 is parallel to reflecting plate 900 and corresponds to its geometric center of reflecting plate 900, and second medium substrate 500 vertically runs through first medium substrate 100.
Described second irradiation structure 600 and described second ground plate 700 lay respectively on two surfaces of described second medium substrate 22, wherein, described second irradiation structure 600 be positioned at described second medium substrate 22 away from reflecting plate 10 side on the surface, described second ground plate 700 is positioned at described second medium substrate 22 near the side of described reflecting plate 10 on the surface.The profile of described second irradiation structure 600 and described second ground plate 700 is all in mountain font.
Second irradiation structure 600 comprises the second radiation branch of radiation long portion 61, first radiation branch 62, second 63 and the first connecting portion 64, first radiation branch 62 and the second radiation branch 63 are symmetricly set on the second radiation long portion 61 both sides, and described first connecting portion 64 connects one end of one end of described second radiation long portion 61, one end of described first radiation branch 62 and described second radiation branch 63.Wherein, align with one end of the second radiation long portion 61 in one end of the first radiation branch 62 and one end of the second radiation branch 63, the other end non-alignment of the other end of the first radiation branch 62 and the other end of the second radiation branch 63 and the second radiation long portion 61.
Second ground plate 700 comprises the second ground connection branch of ground connection long portion 71, first ground connection branch 72, second 73 and the second connecting portion 74, first ground connection branch 72 and the second ground connection branch 73 are symmetricly set on the second ground connection long portion 71 both sides, and described second connecting portion 74 connects one end of one end of described second ground connection long portion 71, one end of described first ground connection branch 72 and described second ground connection branch 73.Wherein, align with one end of the second ground connection long portion 71 in one end of the first ground connection branch 72 and one end of the second ground connection branch 73, the other end non-alignment of the other end of the first ground connection branch 72 and the other end of the second ground connection branch 73 and the second ground connection long portion 71.
The mid point of the first connecting portion 64 connects feed line, and the mid point of the second connecting portion 74 connects earth connection.Usual feed line and earth connection are coaxial cable, and the heart yearn of cable is feed line, and outer conductor is earth connection, and in the present embodiment, medium substrate 100 is provided with through hole, passes for feed line or earth connection.Such as cable is arranged on the first surface of medium substrate 100, feed line connects the mid point (distributing point) of the first connecting portion 64, earth connection is connected to the mid point (earth point) of the second connecting portion 74 through through hole, simplifies wiring, avoids the winding of cable.
In the present embodiment, when the length of antenna is 1/2 of electromagnetic wave signal wavelength, the transmitting and receiving of antenna are most effective.The length sum of length and the first ground connection branch 72 that the length of the second radiation long portion 61 and the length sum of the second ground connection long portion 71 are roughly the 1/2nd, first radiation branch 62 of the first resonate frequency wavelength is roughly 1/2nd of the second resonate frequency wavelength.The transmitting and receiving of antenna are most effective.In the present embodiment, in antenna assembly, the working frequency range of each radiating antenna is 2.4GHz-2.5GHz and 5.15GHz-5.85GHz, the first resonance frequency is now located in the working frequency range of 2.4GHz-2.5GHz, and the second resonance frequency is located in the working frequency range of 5.15GHz-5.85GHz.
In the present embodiment, the response of the length major effect antenna low-frequency range of the second radiation long portion 61 and the second ground connection long portion 71, the response of the length major effect antenna high band of the first radiation branch 62 and the first ground connection branch 72.Therefore, by regulating the length of the second radiation long portion 61 and the first radiation branch 62 and the second ground connection long portion 71 and the first ground connection branch 72, dual frequency radiation characteristic can be realized.Fig. 4 is the curve chart of voltage standing wave ratio with frequency change of antenna assembly, and Fig. 5 is the curve chart of S parameter value with frequency change of antenna assembly.This antenna assembly reflection coefficient S11 under 2.4GHz-2.5GHz and 5.15GHz-5.85GHz two working frequency range is all less than-10dB, and voltage standing wave ratio is all less than 2, and isolation is all less than-30dB.This shows that this antenna assembly has less return loss under two frequency ranges, improves the isolation between radiating antenna.
Fig. 6 is the antenna pattern of antenna assembly under 2450MH, and Fig. 7 is the antenna pattern of antenna assembly under 5500MHz.Antenna pattern refers at the figure changed with direction from the relative field strength (normalization modulus value) of antenna a distance radiation field.As can be seen from Fig. 6 to 7, this antenna assembly has good directional diagram at two working frequency range, and shows directional characteristic.The antenna gain of this antenna assembly significantly improves relative to traditional antenna, thus improves antenna radiation efficiency.
According to embodiment of the present utility model as described above, these embodiments do not have all details of detailed descriptionthe, do not limit the specific embodiment that this utility model is only described yet.Obviously, according to above description, can make many modifications and variations.This specification is chosen and is specifically described these embodiments, is to explain principle of the present utility model and practical application better, thus makes art technical staff that the utility model and the amendment on the utility model basis can be utilized well to use.The utility model is only subject to the restriction of claims and four corner and equivalent.
Claims (23)
1. an antenna assembly, it is characterized in that, comprise the first radiating antenna, the second radiating antenna and reflecting plate, described first radiating antenna is vertically placed on above described reflecting plate, described second radiating antenna is vertically through described first radiating antenna, wherein, described second radiating antenna is parallel with described reflecting plate near described reflecting plate.
2. antenna assembly according to claim 1, it is characterized in that, described first radiating antenna comprises first medium substrate, is positioned at the first irradiation structure of a side surface of described first medium substrate, the first ground plate and the first feed line, and the second radiating antenna comprises the second medium substrate vertically running through described first medium substrate, the second irradiation structure, the second ground plate and the second feed line be positioned on described second medium substrate.
3. antenna assembly according to claim 2, it is characterized in that, described first medium substrate is vertically installed in above described reflecting plate, described second medium substrate vertically runs through described first medium substrate, described first irradiation structure and described first ground plate are all in step-like, and respective step part is close to each other and identical, described second irradiation structure and described second ground plate positioned opposite to each other on two surfaces of second medium substrate, and described second ground plate be arranged on described second medium substrate with described first irradiation structure away from surface on, be positioned at the side of described first irradiation structure, described second irradiation structure be arranged on second medium substrate another on the surface, be positioned at the opposite side that described first irradiation structure is relative, described first feed line connects the distributing point of described first irradiation structure and described first ground plate, described second feed line connects the distributing point of described second irradiation structure and described second ground plate.
4. antenna assembly according to claim 3, it is characterized in that, described first radiating antenna also comprises and being positioned on described first medium substrate and identical the first director of structure and the second director, wherein, described first director and the second director are all parallel to the plane at described first irradiation structure and the first ground plate place, and to be disposed on successively on described first medium substrate and away from described first medium substrate by the position run through.
5. antenna assembly according to claim 3, is characterized in that, described first irradiation structure comprises the first short portion of radiation and the first radiation long portion, and the described first short portion of radiation superposes with described first radiation long portion mutually with common forming station scalariform.
6. antenna assembly according to claim 5, is characterized in that, described first irradiation structure also comprises the first slotted eye, and described first slotted eye extends to the other one end near the described first short portion of radiation from the one end near described first radiation long portion.
7. antenna assembly according to claim 6, is characterized in that, described first ground plate comprises the first short portion of ground connection and the first ground connection long portion, and the described first short portion of ground connection superposes with described first ground connection long portion mutually with common forming station scalariform.
8. antenna assembly according to claim 7, is characterized in that, described first ground plate also comprises the second slotted eye, and described second slotted eye extends to the other one end near described first ground connection long portion from the one end near the described first short portion of ground connection.
9. antenna assembly according to claim 8, is characterized in that, described first slotted eye and described second slotted eye form splayed jointly.
10. antenna assembly according to claim 9, is characterized in that, the length of described first radiation long portion and the length sum of described first ground connection long portion are 1/2nd of the first resonate frequency wavelength.
11. antenna assemblies according to claim 9, is characterized in that, the length in the described first short portion of radiation and the length sum in the described first short portion of ground connection are 1/2nd of the second resonate frequency wavelength.
12. antenna assemblies according to claim 2, it is characterized in that, described second irradiation structure is chevron, comprise the second radiation long portion, the first radiation branch, the second radiation branch and the first connecting portion, described first radiation branch and the second radiation branch are symmetricly set on the both sides of described second radiation long portion, and described first connecting portion connects one end of one end of described second radiation long portion, one end of described first radiation branch and described second radiation branch.
13. antenna assemblies according to claim 12, it is characterized in that, align with one end of described second radiation long portion in one end of described first radiation branch, one end of described second radiation branch, the other end non-alignment of the other end of described first radiation branch, the other end of described second radiation branch and described second radiation long portion.
14. antenna assemblies according to claim 12, it is characterized in that, described second ground plate is mountain font, comprise the second ground connection long portion, the first ground connection branch, the second ground connection branch and the second connecting portion, described first ground connection branch and described second ground connection branch are symmetricly set on described second ground connection long portion both sides, and described second connecting portion connects one end of one end of described second ground connection long portion, one end of described first ground connection branch and described second ground connection branch.
15. antenna assemblies according to claim 14, it is characterized in that, align with one end of described second ground connection long portion in one end of described first ground connection branch, one end of described second ground connection branch, the other end non-alignment of the other end of described first ground connection branch, the other end of described second ground connection branch and described second ground connection long portion.
16. antenna assemblies according to claim 15, is characterized in that, the projection of described second irradiation structure on the opposite flank of described second medium substrate and described second ground plate symmetrical.
17. antenna assemblies according to claim 16, it is characterized in that, the length of described second radiation long portion and the length sum of the second ground connection long portion are 1/2nd of the first resonate frequency wavelength, and the length of described first radiation branch and the length sum of the first ground connection branch are 1/2nd of the second resonate frequency wavelength.
18. antenna assemblies according to claim 2, is characterized in that, the distance between described first irradiation structure and described reflecting plate is greater than 1/8th of the first resonate frequency wavelength.
19. antenna assemblies according to claim 2, is characterized in that, the distance between described second irradiation structure and described reflecting plate is greater than 1/4th of the second resonate frequency wavelength.
20. antenna assemblies according to claim 4, is characterized in that, described first director and the second director are rectangle, and length is 2/5ths of the first resonate frequency wavelength.
21. antenna assemblies according to claim 4, is characterized in that, the distance between described first director and described first irradiation structure is 1/2nd of the second resonate frequency wavelength.
22. antenna assemblies according to claim 4, is characterized in that, the spacing between described first director and the second director is 1/4th of the first resonate frequency wavelength.
23. antenna assemblies according to claim 1, is characterized in that, the maximum length and width of the size of described reflecting plate are all greater than the first resonate frequency wavelength.
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| CN201520353333.2U CN204741080U (en) | 2015-05-27 | 2015-05-27 | Antenna device |
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| CN201520353333.2U CN204741080U (en) | 2015-05-27 | 2015-05-27 | Antenna device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106532237A (en) * | 2016-11-30 | 2017-03-22 | 佛山市粤海信通讯有限公司 | Flaky polarized antenna |
| WO2018053849A1 (en) * | 2016-09-26 | 2018-03-29 | 深圳市大疆创新科技有限公司 | Antenna and unmanned aerial vehicle |
| CN111384598A (en) * | 2018-12-27 | 2020-07-07 | 航天信息股份有限公司 | Yagi antenna |
| CN111384599A (en) * | 2018-12-27 | 2020-07-07 | 航天信息股份有限公司 | Yagi antenna |
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2015
- 2015-05-27 CN CN201520353333.2U patent/CN204741080U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018053849A1 (en) * | 2016-09-26 | 2018-03-29 | 深圳市大疆创新科技有限公司 | Antenna and unmanned aerial vehicle |
| US11171412B2 (en) | 2016-09-26 | 2021-11-09 | SZ DJI Technology Co., Ltd. | Antennas and unmanned aerial vehicle |
| CN106532237A (en) * | 2016-11-30 | 2017-03-22 | 佛山市粤海信通讯有限公司 | Flaky polarized antenna |
| CN106532237B (en) * | 2016-11-30 | 2023-08-25 | 佛山市粤海信通讯有限公司 | Sheet type polarized antenna |
| CN111384598A (en) * | 2018-12-27 | 2020-07-07 | 航天信息股份有限公司 | Yagi antenna |
| CN111384599A (en) * | 2018-12-27 | 2020-07-07 | 航天信息股份有限公司 | Yagi antenna |
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