CN106848541A - Antenna - Google Patents

Antenna Download PDF

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Publication number
CN106848541A
CN106848541A CN201510886156.9A CN201510886156A CN106848541A CN 106848541 A CN106848541 A CN 106848541A CN 201510886156 A CN201510886156 A CN 201510886156A CN 106848541 A CN106848541 A CN 106848541A
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CN
China
Prior art keywords
director
sub
reflector
length
unit
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Granted
Application number
CN201510886156.9A
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Chinese (zh)
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CN106848541B (en
Inventor
漆宏
漆一宏
于伟
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GENERAL TEST SYSTEMS Inc.
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JIANGSU ENICE NETWORK INFORMATION CO Ltd
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Priority to CN201510886156.9A priority Critical patent/CN106848541B/en
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Abstract

The invention discloses a kind of antenna, the antenna includes:Support;Exciting unit, the exciting unit sets on the bracket, and the exciting unit is closed curve-shaped to form through slot;Director, the director sets on the bracket, and the director is located at the first side of the exciting unit and is spaced apart with the exciting unit on the length direction of the support;Reflector, the reflector sets on the bracket, and the reflector is located at the second side of the exciting unit and is spaced apart with the exciting unit on the length direction of the support, and first side is relative with second side;And feeder cable, the feeder cable is connected with the exciting unit.Antenna according to embodiments of the present invention has the advantages that frequency bandwidth is wide, i.e., antenna has frequency bandwidth wider.

Description

Antenna
Technical field
The present invention relates to the communications field, in particular to antenna.
Background technology
In the related art, yagi aerial is the end being made up of an oscillator, a reflector and one or more directors Penetrate formula antenna.The radiation scope of the oscillator of yagi aerial is small, limited bandwidth, causes yagi aerial to realize bandwidth wider.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention proposes one Planting has the advantages that frequency bandwidth antenna wide.
Antenna according to embodiments of the present invention includes:Support;Exciting unit, the exciting unit sets on the bracket, institute State exciting unit for closed curve-shaped to form through slot;Director, the director sets on the bracket, described to draw It is spaced apart with the exciting unit positioned at the first side of the exciting unit and on the length direction of the support to device;Reflection Device, the reflector sets on the bracket, and the reflector is located at the second side of the exciting unit and in the support It is spaced apart with the exciting unit on length direction, first side is relative with second side;And feeder cable, the feedback Electric wire cable is connected with the exciting unit.
Antenna according to embodiments of the present invention has the advantages that frequency bandwidth is wide, i.e., antenna has frequency bandwidth wider.
In addition, antenna according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, the exciting unit has longitudinal asymmetric axis, lateral symmetry axis and center, The through slot is symmetrical relative to the longitudinal asymmetric axis, relative to the lateral symmetry axisymmetrical, relative in described Heart Central Symmetry.
According to one embodiment of present invention, the director includes many sub- directors, and multiple sub- directors are put down each other Go and be transversely spaced setting, the wherein bearing of trend of each sub- director and the excitation along the exciting unit The main polarization direction of electric field of unit is consistent.
According to one embodiment of present invention, the multiple described sub- director of the director is located at different perpendicular to the branch On the vertical plane of the length direction of frame, wherein a ratio at the middle part away from the director of the two neighboring sub- director The neighbouring exciting unit of of the middle part of the neighbouring described director of the two neighboring sub- director.
According to one embodiment of present invention, the director includes sub- director described in odd number, and son described in odd number is guided into Device includes the sub- director of middle sub- director and multiple sides, and multiple relatively described sub- directors in centre of the sub- director in side are two-by-two Symmetrically, wherein two symmetrical sub- directors in side of the relatively described sub- director in centre are positioned at same perpendicular to the support Length direction vertical plane on.
According to one embodiment of present invention, the director for multiple, multiple directors along the support length side To setting at interval, each director length in the cross direction is less than or equal to the exciting unit in the transverse direction On length, it is preferable that the support include body, multiple first support arms, the first holder and the second holder, it is many Individual first support arm sets on the body at interval along the length direction of the body, and multiple directors are one by one Accordingly it is located on multiple first support arms, wherein the body includes epimere and hypomere, the first holder suit On the lower end of the epimere, second holder is sleeved on the upper end of the hypomere, first holder with it is described Second holder is connected, and is clamped in the middle part of the exciting unit between first holder and second holder.
According to one embodiment of present invention, away from the exciting unit of the two neighboring director is in the horizontal stroke A length in the cross direction of the upward length less than or equal to the neighbouring described exciting unit of the two neighboring director Degree.
According to one embodiment of present invention, multiple directors constitute remote director group, the neighbour away from the exciting unit The nearly director group and the middle director between the remote director group and the nearly director group of the nearly exciting unit Group, wherein each of each described director of remote director group length in the cross direction and the nearly director group Director length in the cross direction is respectively less than each described director of the middle director group in the cross direction Length.
According to one embodiment of present invention, the director for multiple, multiple directors along the support length side To setting at interval, in the plurality of director is located at the end away from the exciting unit of the support And including a sub- director.
According to one embodiment of present invention, the reflector includes many sub- reflectors, and multiple sub- reflectors are put down each other Go and be transversely spaced setting, the wherein bearing of trend of each sub- reflector and the excitation along the exciting unit The main polarization direction of electric field of unit is consistent, it is preferable that the director includes many sub- directors, the director it is many The position of the individual sub- director corresponds with the position of the multiple described sub- reflector of the reflector, it is preferable that described Support includes body, the second support arm, the first holder and the second holder, and the reflector is located at second support arm On, wherein the body includes epimere and hypomere, first holder is sleeved on the lower end of the epimere, described second Holder is sleeved on the upper end of the hypomere, and first holder is connected with second holder, the exciting unit Middle part be clamped between first holder and second holder.
According to one embodiment of present invention, reflector length in the cross direction exists more than or equal to the exciting unit Length in the transverse direction, length of the reflector on the longitudinal direction of the exciting unit is more than the exciting unit described The length of length and the director on longitudinal direction on the longitudinal direction.
According to one embodiment of present invention, the multiple described sub- reflector of the reflector is located at different perpendicular to the branch On the vertical plane of the length direction of frame, wherein a ratio at the middle part away from the reflector of the two neighboring sub- reflector The neighbouring exciting unit of of the middle part of the neighbouring described reflector of the two neighboring sub- reflector.
According to one embodiment of present invention, the reflector includes sub- reflector described in odd number, son reflection described in odd number Device includes the sub- reflector of middle sub- reflector and multiple sides, and multiple relatively described sub- reflectors in centre of the sub- reflector in side are two-by-two Symmetrically, two symmetrical sub- reflectors in side of the relatively described sub- reflector in centre are located at the same length perpendicular to the support Spend on the vertical plane in direction.
According to one embodiment of present invention, the exciting unit have the first feed point and the second feed point, first feed point and Second feed point is located in the longitudinal asymmetric axis of the exciting unit and positioned at the both sides of the through slot, wherein the feedback The outer conductor of electric wire cable is connected with first feed point, and the inner wire of the feeder cable is connected with second feed point.
According to one embodiment of present invention, the antenna further includes the first straight oscillator and the second straight oscillator, described first One end of straight oscillator is connected with first feed point, and one end of the second straight oscillator is connected with second feed point.
Brief description of the drawings
Fig. 1 is the structural representation of antenna according to first embodiment of the invention;
Fig. 2 is the structural representation of antenna according to first embodiment of the invention;
Fig. 3 is the structural representation of antenna according to first embodiment of the invention;
Fig. 4 is the structural representation of the antenna of second embodiment of the invention;
Fig. 5 is the structural representation of the antenna of the 3rd embodiment of the invention;
Fig. 6 is the structural representation of the antenna of the 4th embodiment of the invention;
Fig. 7 is the structural representation of the exciting unit of antenna according to embodiments of the present invention;
Fig. 8 is the partial structural diagram of antenna according to embodiments of the present invention.
Reference:
Antenna 10,
Support 101, body 1011, epimere 10111, hypomere 10112, the first support arm 1012, the first holder 1013, Second holder 1014, the second support arm 1015,
Exciting unit 102, through slot 1021, the first feed point 1022, the second feed point 1023, left side 1024, left contraction flow region 1025th, pars intermedia 1026, anterior 10261, rear portion 10262, right contraction flow region 1027, right side 1028,
Director 103, sub- director 1031, the sub- director 10312 of middle sub- director 10311, side, remote director group 103a, Nearly director group 103b, middle director group 103c,
Reflector 104, sub- reflector 1041, the sub- reflector 10412 of middle sub- reflector 10411, side,
Feeder cable 105,
First straight oscillator 1061, the second straight oscillator 1062,
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to accompanying drawing The embodiment of description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings antenna 10 according to embodiments of the present invention is described.As Figure 1-Figure 8, according to embodiments of the present invention Antenna 10 include support 101, exciting unit 102, director 103, reflector 104 and feeder cable 105.
Exciting unit 102 is located on support 101, and exciting unit 102 is closed curve-shaped to form through slot 1021.Draw It is located on support 101 to device 103, director 103 is located at the first side of exciting unit 102, and director 103 is in support 101 Length direction on be spaced apart with exciting unit 102.Reflector 104 is located on support 101, and reflector 104 is located at excitation Second side of unit 102, reflector 104 is spaced apart on the length direction of support 101 with exciting unit 102.Wherein, First side of exciting unit 102 is relative with the second side of exciting unit 102.Feeder cable 105 is connected with exciting unit 102.
The exciting unit 102 of antenna 10 according to embodiments of the present invention be closed curve-shaped to form through slot 1021, that is, swash Unit 102 is encouraged with groove-like structure, the Electric Field Distribution of exciting unit 102 is in whole through slot 1021.Therefore, encourage single First 102 direction of an electric field and the sense of current of exciting unit 102 are inconsistent.The sense of current of exciting unit 102 is as schemed Shown in arrow A in 7, the direction of an electric field of exciting unit 102 is as shown in the arrow B in Fig. 7.
Because the Electric Field Distribution of exciting unit 102 is in whole through slot 1021, therefore the radiation scope of exciting unit 102 is big, The frequency bandwidth of antenna 10 is expanded.Antenna 10 according to embodiments of the present invention has the advantages that frequency bandwidth is wide, i.e. antenna 10 have frequency bandwidth wider.
Advantageously, antenna 10 according to embodiments of the present invention is yagi aerial.
As Figure 1-Figure 8, the antenna 10 of some embodiments of the invention include support 101, exciting unit 102, Director 103, reflector 104 and feeder cable 105.
Support 101 includes body 1011 and multiple first support arms 1012, and multiple first support arms 1012 are along body 1011 Length direction be located at interval on body 1011.Advantageously, as shown in Fig. 2 body 1011 is provided with installation through-hole, Each first support arm 1012 is through the installation through-hole and on body 1011.Wherein, the length direction of body 1011 Length direction with support 101 is consistent.Support 101 can be made up of metal material, it is also possible to be made up of nonmetallic materials.
For convenience of description, above-below direction (as shown by arrow C) and left and right directions are indicated in figure 3 (such as arrow D institutes Show).As shown in figure 3, body 1011 is vertically extending, i.e. the length direction of body 1011 is consistent with above-below direction, Each first support arm 1012 extends in left-right direction.
Exciting unit 102 is the radiation component of antenna 10.Advantageously, whole exciting unit 102 is located at same perpendicular to branch On the vertical plane of the length direction of frame 101, i.e., whole exciting unit 102 is located on same horizontal plane.
As shown in fig. 7, in one embodiment of the invention, exciting unit 102 has longitudinal asymmetric axis L1, transverse direction right Claim axis L2 and center, through slot 1021 is symmetrical relative to longitudinal asymmetric axis L1, and through slot 1021 is relative to laterally right Claim axis L2 symmetrical, through slot 1021 is symmetrical relative to the revenue centre.In other words, exciting unit 102 is relative to longitudinal direction Axis of symmetry L1 is symmetrical, and exciting unit 102 is symmetrical relative to lateral symmetry axis L2, and exciting unit 102 is relative in this Heart Central Symmetry.
Specifically, exciting unit 102 includes left side 1024, left contraction flow region 1025, pars intermedia 1026, right contraction flow region 1027 and right side 1028.The left side of left contraction flow region 1025 along the right side with left side 1024 along being connected, left contraction flow region 1025 Right side along with the left side of pars intermedia 1026 along being connected.The left side of right contraction flow region 1027 is along the right side with pars intermedia 1026 along phase Even, the right side of right contraction flow region 1027 along the left side with right side 1028 along being connected.
The width of left contraction flow region 1025 reduces from left to right, and the width of right contraction flow region 1027 reduces from right to left, left side 1024 Width and the width of right side 1028 be all higher than the width of pars intermedia 1026.Wherein, the upper left corner and a left side of left side 1024 Inferior horn is outwardly to form two protuberances of circular arc (major arc), and the upper right corner and the lower right corner of right side 1028 are outside Protrusion is to form two protuberances of circular arc (major arc).
That is, exciting unit 102 includes closing outer peripheral edge, rule or the irregular shape of rule or irregular shape Closing inner peripheral and the metal part limited by the outer peripheral edge and the inner peripheral.Exciting unit 102 includes groove-like structure, should Groove-like structure is located at the inside of exciting unit 102, and the groove-like structure includes the edge of rule or irregular shape, and the edge is It is the inner peripheral of exciting unit 102.
Advantageously, exciting unit 102 is formed by metallic rod or wire one bending, and exciting unit 102 can also be by metal Part integrated punching is formed.
In an example of the invention, exciting unit 102 has the first feed point 1022 and the second feed point 1023, feeder cable 105 outer conductor is connected with the first feed point 1022, and the inner wire of feeder cable 105 is connected with the second feed point 1023.It is this Feeding classification can realize the matched well in broadband, meet standing wave requirement, while directional diagram can be optimized, it is to avoid excitation current is high Secondary mould.
Advantageously, the first feed point 1022 and the second feed point 1023 are located on the longitudinal asymmetric axis L1 of exciting unit 102, the One feed point 1022 and the second feed point 1023 are located at the both sides of through slot 1021.In other words, pars intermedia 1026 includes anterior 10261 With rear portion 10262, the first feed point 1022 be located on anterior 10261 and positioned at anterior 10261 midpoint, the second feed point 1023 It is located on rear portion 10262 and positioned at the midpoint at rear portion 10262.It is possible thereby to the more preferable matching in broadband is realized, it is further full Sufficient standing wave requirement, while further optimizing directional diagram, further avoids excitation current higher mode.
As shown in fig. 7, antenna 10 further includes the first straight oscillator 1061 and the second straight oscillator 1062, the first straight oscillator 1061 One end be connected with the first feed point 1022, one end of the second straight oscillator 1062 is connected with the second feed point 1023.Thus feed line Cable 105 can be simultaneously that exciting unit 102, the first straight oscillator 1061 and the second straight oscillator 1062 feed.By setting the The straight oscillator 1062 of oscillator 1061 and second, not only can effectively expand bandwidth of the antenna 10 in low-frequency range to improve always In the radiance of low-frequency range, and the first straight oscillator 1061 and the second straight oscillator 1062 coordinate the He of director 103 to antenna 10 Reflector 104 is to improve the gain of antenna 10.
Wherein, each in the first straight oscillator 1061 and the second straight oscillator 1062 can make linear metal (such as metal Bar) or non-rectilinear metalwork.
As shown in Figure 2 and Figure 8, support 101 further includes the first holder 1013 and the second holder 1014, body 1011 include epimere 10111 and hypomere 10112, and the first holder 1013 is sleeved on the lower end of epimere 10111, the second folder Gripping member 1014 is sleeved on the upper end of hypomere 10112.First holder 1013 is connected with the second holder 1014 and (for example leads to Cross multiple bolts), one of the middle part of exciting unit 102, a part for the first straight oscillator 1061 and the second straight oscillator 1062 Divide and be clamped between the first holder 1013 and the second holder 1014.It is possible thereby to make antenna 10 easily facilitate assembling.
Specifically, a part for the pars intermedia 1026 of exciting unit 102, the first straight oscillator 1061 with exciting unit 102 The end being connected with exciting unit 102 of the straight oscillator 1062 in connected end and second is clamped in the first holder 1013 and Between two holders 1014.
Director 103 is used to strengthen the electric wave that exciting unit 102 is launched to the direction of director 103.As shown in figs 1 to 6, Multiple directors 103 are parallel to each other, and each director 103 is parallel to exciting unit 102.
As shown in figs 1 to 6, director 103 includes many sub- directors 1031 (such as three or five), and many height draw Parallel to each other to device 1031, many sub- directors 1031 are transversely spaced setting along exciting unit 102.Wherein, often The bearing of trend of individual sub- director 1031 is consistent with the main polarization direction of the electric field of exciting unit 102.Because director 103 is wrapped Many sub- directors 1031 are included, therefore director 103 can be considered as many arrays of sub- director 1031.
Advantageously, many sub- directors 1031 are set at interval in left-right direction, and every sub- director 1031 is single along excitation The main polarization direction of electric field of unit 102 extends, i.e., every sub- director 1031 can extend along the longitudinal direction.Exciting unit 102 Laterally as shown in the arrow E in Fig. 7, the transverse direction of exciting unit 102 can be consistent with left and right directions, fore-and-aft direction such as figure Shown in arrow F in 1.
In the related art, the position of the oscillator of the position of the director of yagi aerial, direction and shape and yagi aerial, side To, shape to correspondence.Specifically, in the related art, the oscillator of yagi aerial uses straight oscillator or folded dipole, eight The direction of an electric field of the oscillator of wooden antenna is consistent with the sense of current.Meanwhile, the direction of an electric field of director needs the electricity with oscillator Field direction is consistent, to ensure yagi aerial normal work and realize associated specifications.In order to achieve the above object, eight The structure of the director of wooden antenna is similar to the structure of oscillator (as both use straight oscillator), and director is parallel to oscillator, because The set-up mode of this director is limited.
And the mentality of designing of the application is:The bearing of trend of sub- director 1031 and the main polarization direction of electric field of exciting unit 102 It is consistent.It is possible thereby to be greatly enhanced the technical indicator value such as frequency bandwidth of antenna 10.
As shown in figs 1 to 6, director 103 can be multiple, between length direction of the multiple directors 103 along support 101 Separatedly set.Because the radiation scope of the exciting unit 102 of antenna 10 is very big, therefore can be the of exciting unit 102 Side (top of exciting unit 102) sets multiple directors 103, it is possible thereby to further improve the bandwidth of antenna 10 The technical indicator value such as degree, gain.
Specifically, multiple directors 103 are located on multiple first support arms 1012 correspondingly.First support arm 1012 Multiple installation through-holes are provided with, many sub- directors 1031 of director 103 are correspondingly through multiple installation through-holes. Wherein, when director 103 includes odd number sub- director 1031, positioned at a middle sub- director 1031 also through Body 1011.In other words, when director 103 includes the sub- director 1031 of odd number, guided into positioned at a middle son Device 1031 can also be considered as being arranged on the first support arm 1012 and body 1011 simultaneously.
As shown in Fig. 1-Fig. 3, Fig. 5 and Fig. 6, many sub- directors 1031 of director 103 are positioned at same perpendicular to branch On the vertical plane of the length direction of frame 101 (i.e. body 1011), i.e. many sub- directors 1031 of director 103 are located at together On one horizontal plane.
Advantageously, as shown in figure 4, many sub- directors 1031 of director 103 be located at it is different perpendicular to support 101 On the vertical plane of length direction, i.e. many sub- directors 1031 of director 103 are located on different horizontal planes.Wherein, phase Adjacent two one of the middle part away from director 103 of sub- director 1031 is drawn than the neighbouring of two neighboring sub- director 1031 To a neighbouring exciting unit 102 at the middle part of device 103.
In other words, away from body 1011 of two neighboring sub- director 1031 is than two neighboring sub- director 1031 One of adjacent body 1011 neighbouring exciting unit 102, i.e., two neighboring sub- director 1031 away from the one of body 1011 The lower section of of the individual adjacent body 1011 positioned at two neighboring sub- director 1031.It is possible thereby to improve antenna 10 in height The performance of frequency range.
As shown in figs 1 to 6, director 103 includes odd number sub- director 1031, and odd number sub- director 1031 includes The sub- director 10312 of middle sub- director 10311 and multiple sides, the relatively middle sub- director of multiple sub- directors 10312 in side 10311 is symmetrical two-by-two, and the symmetrical sub- director 10312 in two sides of relatively middle sub- director 10311 is located at same vertical In on the vertical plane of the length direction of support 101, i.e., relatively in the middle of the symmetrical two sub- directors in side of sub- director 10311 10312 are located on same horizontal plane.It is possible thereby to make the structure of antenna 10 more reasonable.
Each length of director 103 in the transverse direction of exciting unit 102 is less than or equal to exciting unit 102 in its transverse direction Length.As Figure 1-Figure 4, in an example of the invention, two neighboring director 103 away from exciting unit 102 The length in the transverse direction of exciting unit 102 less than two neighboring director 103 neighbouring exciting unit 102 one The individual length in the transverse direction of exciting unit 102.In other words, multiple directors 103 are in the transverse direction of exciting unit 102 Length reduces along the direction away from exciting unit 102.
Wherein, each length of director 103 in the transverse direction of exciting unit 102 refers to each director 103 positioned at most Distance of the two sub- directors 1031 in outside in the transverse direction of exciting unit 102.
In the related art, yagi aerial sets multiple directors for arranging successively to increase the gain of antenna in the side of oscillator, But after actually exceeding four, five directors, the effect for increasing the gain of antenna is not just obvious, and increases director Caused antenna volume is big, the problems such as increasing, require raising, added cost to the strength of materials of conducting oneself with dignity but gradually protrudes.
In order to solve the above problems, antenna 10 according to embodiments of the present invention is by making multiple directors 103 in exciting unit Length in 102 transverse direction reduces along the direction away from exciting unit 102, such that it is able to form an autoexcitation unit 102 To the array structure of director 103 that one end of antenna 10 reduces, is polymerized.Thus multiple director 103 (i.e. director 103 Array structure) poly- ripple effect can be played, drastically increase the gain of antenna 10.
It will be appreciated by persons skilled in the art that each director 103 set the shape of sub- director 1031, quantity, The parameters such as the spacing of size, position, the spacing of two neighboring sub- director 1031 and two neighboring director 103 can be according to It is adjusted to realize optimal performance according to the index request of antenna 10.
As shown in figure 5, in another example of the invention, multiple directors 103 in the transverse direction of exciting unit 102 Length be equal to each other.
In another example of the invention, as shown in fig. 6, multiple directors 103 are constituted away from the remote of exciting unit 102 Director group 103a, the nearly director group 103b of neighbouring exciting unit 102 and guide into positioned at remote director group 103a and closely Middle director group 103c between device group 103b.Wherein, each director 103 of remote director group 103a is in exciting unit Each length of director 103 in the transverse direction of exciting unit 102 of length and nearly director group 103b in 102 transverse direction Each length of director 103 in the transverse direction of exciting unit 102 of respectively less than middle director group 103c.
Advantageously, as shown in fig. 6, each director 103 of remote director group 103a is in the transverse direction of exciting unit 102 Length is equal to each other, each length of director 103 in the transverse direction of exciting unit 102 of nearly director group 103b phase each other Deng each length of director 103 in the transverse direction of exciting unit 102 of middle director group 103c is equal to each other.
As shown in figs 1 to 6, in multiple directors 103 is located at the end away from exciting unit 102 of body 1011 Portion, the director 103 includes a sub- director 1031.That is, setting one individually in the upper end of body 1011 Sub- director 1031.It is possible thereby to further improve the gain of antenna 10.
Reflector 104 is used to weaken the electric wave that exciting unit 102 is launched to the direction of reflector 104.Reflector 104 can be with It is known reflector, such as metallic plate, metal bar etc..
As shown in figs 1 to 6, in some examples of the invention, reflector 104 includes many sub- reflectors 1041 (i.e. branch Section), many sub- reflectors 1041 are parallel to each other, many sub- reflectors 1041 along exciting unit 102 be transversely spaced set Put.Wherein, the bearing of trend of every sub- reflector 1041 is consistent with the main polarization direction of the electric field of exciting unit 102.Due to Reflector 104 includes many sub- reflectors 1041, therefore reflector 104 can be considered as many arrays of sub- reflector 1041.
Advantageously, many sub- reflectors 1041 are set at interval in left-right direction, and every sub- reflector 1041 is single along excitation The main polarization direction of electric field of unit 102 extends, i.e., every sub- reflector 1041 can extend along the longitudinal direction.
By making the bearing of trend of every sub- reflector 1041 consistent with the main polarization direction of the electric field of exciting unit 102, so that The electric wave that exciting unit 102 is launched to the direction of reflector 104 can more efficiently be weakened, make the energy of antenna 10 preferably Strengthen to the side of director 103.
The many positions of sub- director 1031 of director 103 and many positions one of sub- reflector 1041 of reflector 104 One correspondence.In other words, many quantity of sub- director 1031 of director 103 are equal to many sub- reflectors of reflector 104 1041 quantity, and a position for sub- director 1031 is corresponding with the position of a sub- reflector 1041.
It is possible thereby to further improve the technical indicator values such as the frequency bandwidth of antenna 10.
In a specific example of the invention, length of the reflector 104 in the transverse direction of exciting unit 102 is more than or equal to sharp The length in its transverse direction of unit 102 is encouraged, length of the reflector 104 on the longitudinal direction of exciting unit 102 is more than exciting unit Length of 102 length and director 103 in a longitudinal direction thereof on the longitudinal direction of exciting unit 102.Exciting unit 102 As shown in the arrow G in Fig. 7, the longitudinal direction of exciting unit 102 can be consistent with fore-and-aft direction for longitudinal direction.
Wherein, each length of reflector 104 in the transverse direction of exciting unit 102 refers to each reflector 104 positioned at most Distance of the two sub- reflectors 1041 in outside in the transverse direction of exciting unit 102.Reflector 104 is in exciting unit 102 Length on longitudinal direction refers to the length of the sub- reflector 1041 most long on the longitudinal direction of exciting unit 102 of reflector 104.
As depicted in figs. 1 and 2, support 101 further includes the second support arm 1015, many height reflection of reflector 104 Device 1041 is located on the second support arm 1015.Specifically, the second support arm 1015 is provided with multiple installation through-holes, reflection Many sub- reflectors 1041 of device 104 are correspondingly through multiple installation through-holes.Wherein, when reflector 104 is included very During several sub- reflectors 1041, positioned at a middle sub- reflector 1041 also through body 1011.In other words, reflection is worked as When device 104 includes odd number sub- reflector 1041, peace simultaneously can also be considered as positioned at a middle sub- reflector 1041 On the second support arm 1015 and body 1011.
As shown in Fig. 1-Fig. 3, Fig. 5 and Fig. 6, many sub- reflectors 1041 of reflector 104 are positioned at same perpendicular to branch On the vertical plane of the length direction of frame 101 (i.e. body 1011), i.e. many sub- reflectors 1041 of reflector 104 are located at together On one horizontal plane.
As shown in figure 4, many sub- reflectors 1041 of reflector 104 are located at the different length directions perpendicular to support 101 Vertical plane on, i.e. many sub- reflectors 1041 of reflector 104 are located on different horizontal planes.Wherein, two neighboring son Near reflection device 104 of of the middle part away from reflector 104 of reflector 1041 than two neighboring sub- reflector 1041 One of middle part neighbouring exciting unit 102.
In other words, away from body 1011 of two neighboring sub- reflector 1041 is than two neighboring sub- reflector 1041 One of adjacent body 1011 neighbouring exciting unit 102, i.e., two neighboring sub- reflector 1041 away from the one of body 1011 The top of of the individual adjacent body 1011 positioned at two neighboring sub- reflector 1041.It is possible thereby to improve antenna 10 in height The performance of frequency range.
As shown in figs 1 to 6, reflector 104 includes odd number sub- reflector 1041, and odd number sub- reflector 1041 includes The sub- reflector 10412 of middle sub- reflector 10411 and multiple sides, the relatively middle sub- reflector of multiple sub- reflectors 10412 in side 10411 is symmetrical two-by-two, and the symmetrical sub- reflector 10412 in two sides of relatively middle sub- reflector 10411 is located at same vertical In on the vertical plane of the length direction of support 101, i.e., relatively in the middle of the symmetrical two sub- reflectors in side of sub- reflector 10411 10412 are located on same horizontal plane.It is possible thereby to make the structure of antenna 10 more reasonable.
It will be appreciated by persons skilled in the art that reflector 104 set the shape of sub- reflector 1041, quantity, size, The parameters such as position, the spacing of adjacent sub- reflector 1041 can be adjusted to realize optimality according to the index request of antenna 10 Energy.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", the orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on Orientation shown in the drawings or position relationship, are for only for ease of and describe of the invention and simplify description, rather than instruction or hint institute The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this hair Bright limitation.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed Or implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two It is individual, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " Should be interpreted broadly Deng term, for example, it may be fixedly connected, or be detachably connected, or integrally;Can be Mechanically connect, or electrically connect or can communicate each other;Can be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For For one of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can Being the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, the One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or Oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or to be merely representative of first special Level height is levied less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure, material or Feature is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, ability The technical staff in domain can enter the feature of the different embodiments or example described in this specification and different embodiments or example Row is combined and combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment be it is exemplary, It is not considered as limiting the invention, one of ordinary skill in the art within the scope of the invention can be to above-described embodiment It is changed, changes, replacing and modification.

Claims (15)

1. a kind of antenna, it is characterised in that including:
Support;
Exciting unit, the exciting unit sets on the bracket, and the exciting unit is closed curve-shaped to form insertion Groove;
Director, the director sets on the bracket, and the director is located at the first side of the exciting unit and in institute State and be spaced apart with the exciting unit on the length direction of support;
Reflector, the reflector sets on the bracket, and the reflector is located at the second side of the exciting unit and in institute State and be spaced apart with the exciting unit on the length direction of support, first side is relative with second side;With
Feeder cable, the feeder cable is connected with the exciting unit.
2. antenna according to claim 1, it is characterised in that
The exciting unit has longitudinal asymmetric axis, lateral symmetry axis and center, and the through slot is relative to the longitudinal direction The axis of symmetry is symmetrical, relative to the lateral symmetry axisymmetrical, symmetrical relative to the revenue centre.
3. antenna according to claim 1, it is characterised in that the director includes many sub- directors, Duo Gesuo State sub- director it is parallel to each other and along the exciting unit be transversely spaced set, wherein each sub- director prolongs Stretch direction consistent with the main polarization direction of the electric field of the exciting unit.
4. antenna according to claim 3, it is characterised in that the multiple described sub- director of the director is located at not With the length direction perpendicular to the support vertical plane on, wherein the two neighboring sub- director is guided into away from described The excitation more neighbouring than one of the middle part of the neighbouring described director of the two neighboring sub- director of of the middle part of device is single Unit.
5. antenna according to claim 3, it is characterised in that the director includes sub- director described in odd number, Sub- director described in odd number includes the sub- director of middle sub- director and multiple sides, and multiple sub- directors in side are relatively described Middle sub- director is symmetrical two-by-two, wherein two symmetrical sub- directors in side of the relatively described sub- director in centre are positioned at same On the vertical plane of the individual length direction perpendicular to the support.
6. antenna according to claim 3, it is characterised in that
The director is multiple, and multiple directors set at interval along the length direction of the support, described in each Director length in the cross direction is less than or equal to exciting unit length in the cross direction,
Preferably, the support includes body, multiple first support arms, the first holder and the second holder, multiple described First support arm sets on the body at interval along the length direction of the body, and multiple directors are correspondingly It is located on multiple first support arms, wherein the body includes epimere and hypomere, first holder is sleeved on described On the lower end of epimere, second holder is sleeved on the upper end of the hypomere, and first holder and described second is pressed from both sides Gripping member is connected, and is clamped in the middle part of the exciting unit between first holder and second holder.
7. antenna according to claim 6, it is characterised in that the two neighboring director it is single away from the excitation One length in the cross direction of unit less than or equal to one of neighbouring described exciting unit of the two neighboring director Length in the transverse direction.
8. antenna according to claim 6, it is characterised in that multiple directors are constituted away from the exciting unit Remote director group, the nearly director group of the neighbouring exciting unit and positioned at the remote director group and the nearly director Middle director group between group, wherein each described director of remote director group length in the cross direction and described Each director length in the cross direction of nearly director group be respectively less than the middle director group each described in guide into Device length in the cross direction.
9. antenna according to claim 1, it is characterised in that the director is multiple, multiple director edges The length direction of the support is set at interval, in the plurality of director be located at the support away from institute State the end of exciting unit and including a sub- director.
10. antenna according to claim 1, it is characterised in that
The reflector includes many sub- reflectors, and multiple sub- reflectors are parallel to each other and along the transverse direction of the exciting unit Set at interval, wherein the bearing of trend of each sub- reflector and the main polarization direction phase one of the electric field of the exciting unit Cause,
Preferably, the director includes many sub- directors, the position of the multiple described sub- director of the director and institute The position for stating the multiple described sub- reflector of reflector corresponds,
Preferably, the support includes body, the second support arm, the first holder and the second holder, and the reflector sets On second support arm, wherein the body includes epimere and hypomere, first holder is sleeved on the epimere On lower end, second holder is sleeved on the upper end of the hypomere, first holder and the second holder phase Even, it is clamped in the middle part of the exciting unit between first holder and second holder.
11. antennas according to claim 10, it is characterised in that reflector length in the cross direction is more than Equal to exciting unit length in the cross direction, length of the reflector on the longitudinal direction of the exciting unit is more than Length of length and the director of the exciting unit on the longitudinal direction on the longitudinal direction.
12. antennas according to claim 10, it is characterised in that the multiple described sub- reflector of the reflector is located at On the vertical plane of the different length directions perpendicular to the support, wherein the two neighboring sub- reflector away from described anti- The excitation more neighbouring than one of the middle part of the neighbouring described reflector of the two neighboring sub- reflector of of the middle part of emitter Unit.
13. antennas according to claim 10, it is characterised in that the reflector includes sub- reflector described in odd number, Sub- reflector described in odd number includes the sub- reflector of middle sub- reflector and multiple sides, and multiple sub- reflectors in side are relatively described Middle sub- reflector is symmetrical two-by-two, and two symmetrical sub- reflectors in side of the relatively described sub- reflector in centre are located at same hanging down Directly on the vertical plane of the length direction of the support.
14. antennas according to claim 1, it is characterised in that the exciting unit has the first feed point and the second feedback Point, first feed point and second feed point are located in the longitudinal asymmetric axis of the exciting unit and positioned at the through slot Both sides, wherein the outer conductor of the feeder cable is connected with first feed point, the inner wire of the feeder cable with it is described Second feed point is connected.
15. antennas according to claim 14, it is characterised in that further include the first straight oscillator and the second straight oscillator, One end of the first straight oscillator is connected with first feed point, and one end of the second straight oscillator is connected with second feed point.
CN201510886156.9A 2015-12-04 2015-12-04 Antenna with a shield Active CN106848541B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108539407A (en) * 2018-05-24 2018-09-14 西安电子科技大学 A kind of planar big-angle scanning phased antenna array
CN108767420A (en) * 2018-06-23 2018-11-06 杭州前茂保健食品有限公司 Wall-mounted exterior aerial with protective device

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CN201845868U (en) * 2010-10-18 2011-05-25 广东通宇通讯设备有限公司 Dual polarization Yagi-Uda antenna device
CN203205545U (en) * 2013-03-28 2013-09-18 东莞市普尔信通讯器材有限公司 Yagi aerial
JP5432055B2 (en) * 2010-05-11 2014-03-05 日本放送協会 Dual-polarization Yagi antenna
KR20140096655A (en) * 2013-01-28 2014-08-06 염두성 Antenna
JP2015186093A (en) * 2014-03-25 2015-10-22 日本放送協会 Yagi antenna

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5432055B2 (en) * 2010-05-11 2014-03-05 日本放送協会 Dual-polarization Yagi antenna
CN201845868U (en) * 2010-10-18 2011-05-25 广东通宇通讯设备有限公司 Dual polarization Yagi-Uda antenna device
KR20140096655A (en) * 2013-01-28 2014-08-06 염두성 Antenna
CN203205545U (en) * 2013-03-28 2013-09-18 东莞市普尔信通讯器材有限公司 Yagi aerial
JP2015186093A (en) * 2014-03-25 2015-10-22 日本放送協会 Yagi antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108539407A (en) * 2018-05-24 2018-09-14 西安电子科技大学 A kind of planar big-angle scanning phased antenna array
CN108539407B (en) * 2018-05-24 2020-06-30 西安电子科技大学 Planar large-angle scanning phased antenna array
CN108767420A (en) * 2018-06-23 2018-11-06 杭州前茂保健食品有限公司 Wall-mounted exterior aerial with protective device

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