CN208904208U - First band radiating element and multiband antenna for multiband antenna - Google Patents
First band radiating element and multiband antenna for multiband antenna Download PDFInfo
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- CN208904208U CN208904208U CN201821391604.3U CN201821391604U CN208904208U CN 208904208 U CN208904208 U CN 208904208U CN 201821391604 U CN201821391604 U CN 201821391604U CN 208904208 U CN208904208 U CN 208904208U
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Abstract
The utility model relates to a kind of first band radiating elements for multiband antenna, wherein, the first band radiating element includes at least one first band dipole, the first band dipole has the first dipole arm and the second dipole arm, each of first dipole arm and the second dipole arm include one or more arm sections, and the quantity of the arm section contained in the first dipole arm is more than the quantity of the arm section contained in the second dipole arm." Stealth Fighter " of first band radiating element itself on the one hand can be preferably kept as a result, and " return loss performance " of another aspect first band radiating element itself is also improved.In addition, the utility model further relates to a kind of multiband antenna.The multiband antenna includes at least first band radiating element and second band radiating element.
Description
Technical field
The utility model relates generally to a kind of multiband antenna.More specifically, the utility model relates to one kind to have
The multiband antenna of asymmetric radiation element.
Background technique
In multiband antenna, the radiating element of different frequency bands can be interfered with each other.For example, low-frequency band radiating element can generate
The interference signal in the operation frequency range of high frequency band radiating element is fallen in, performance, the example of high frequency band radiating element are thus influenced
Such as lobe width.Inhibit this interference signal by arranging choke on low-frequency band radiating element at present.However, adjoint
Choke and come, the return loss of low-frequency band radiating element itself is deteriorated.
Utility model content
Therefore, one of the purpose of this utility model is to provide a kind of spoke that can overcome at least one defect in the prior art
Penetrate element.
It is according to the present utility model in a first aspect, provide a kind of first band radiating element include at least one first
Multiband dipole, the first band dipole has the first dipole arm and the second dipole arm, in the first dipole arm and the second dipole arm
Each of include one or more arm sections, the quantity of the arm section contained in the first dipole arm is more than in the second dipole arm
In the quantity of arm section that contains.
In some embodiments, the quantity of the arm section of the first dipole arm and the second dipole arm can be according to " stealthy
Performance " (i.e. interference or scattering of the first band radiating element itself to extraneous, especially other band radiating elements, interference
Or scattering it is lower, " Stealth Fighter " is better) and " return loss performance " in terms of requirement be adapted to.For example, in order to optimize
" Stealth Fighter " can then increase the quantity of the quantity of the arm section of dipole arm, the arm section of especially the first dipole arm.Instead
It can then reduce the quantity of the arm section of dipole arm, the arm of especially the second dipole arm to optimize " return loss performance "
The quantity of section.
In some embodiments, the multiband antenna further includes multiple second band radiating elements, second frequency
It is run in the frequency band different from first band radiating element with radiating element.
In some embodiments, first band radiating element can be low-frequency band radiating element, and covering frequency band is for example
It can be 617MHz to 960MHz.Second band radiating element can be high frequency band radiating element, and covering frequency band for example can be with
For 1710MHz to 2690MHz.Certainly, the multiband antenna can also include the radiating element of other any frequency bands.
In some embodiments, the minimum range between the second dipole arm and any one second band radiating element is big
In the minimum range between the first dipole arm and any one second band radiating element.
In some embodiments, at least one second band radiating element be arranged in the first dipole arm lower zone it is attached
Closely, and at least one lower zone of second band radiating element far from the second dipole arm.
As mentioned above like that, since the quantity of the arm section contained in the first dipole arm is more than in the second dipole arm
The quantity of the arm section contained, so the first dipole arm can be realized good first close to second band radiating element arrangement
" Stealth Fighter " of band radiating elements itself.Further, since far from second band radiating element the second dipole arm have compared with
Few arm section, so " return loss performance " of first band radiating element itself is improved.
In some embodiments, the first dipole arm and the second dipole arm are in the opposed arrangement in 180 degree angle.
In some embodiments, the first dipole arm and the second dipole arm include center conductor and set around center conductor
The multiple arm sections set, wherein the multiple arm section is separated from each other along center conductor.
In some embodiments, at least one arm section includes hollow conductive body, wherein the hollow conductive body is one
End is connected with center conductor, is disconnected in the other end and center conductor.So-called " choke " is formd as a result, is led hollow
The gap between gap and each hollow conductive body between electric body and center conductor.Thereby inhibit first band radiating element
Interference signal on the operation frequency band for falling in other band radiating elements, such as second band radiating element of upper generation.Each arm
The length of section can be adapted to according to the operation frequency band of other band radiating elements, such as second band radiating element.
In some embodiments, multiple protruding portion is since one end of center conductor axially spaced from each otherly along being arranged
On center conductor, center conductor is thus divided into multiple conductive segments, the hollow conductive body is with the center conductor described
It is connected on protruding portion.
In some embodiments, hollow conductive body and center conductor can be each made of aluminum.During fabrication, can will in
Empty electric conductor is crimped on the protruding portion of center conductor, forms conductive connection.Certainly, hollow conductive body and/or center conductor
It can also be made of other suitable metal.
In some embodiments, in the second dipole arm, at least two protruding portions being separated from each other pass through in described
Empty electric conductor electrical communication.At least two arm sections originally spaced apart become an arm section as a result, thus reduce to
A few gap between each hollow conductive body, thereby reduces " return loss ".
In some embodiments, in the second dipole arm, at least two adjacent protruding portions pass through the hollow conductive
Body electrical communication.
In some embodiments, the hollow conductive body cloth for the protruding portion that described at least two are separated from each other is connected
Set the end regions in the second dipole arm or intermediate region.
In some embodiments, do not have conductive segment between the protruding portion being separated from each other described at least two.?
That is the conductive segment between described at least two adjacent protruding portions is removed.This enables to the manufacture of radiating element
Cost is substantially reduced, while also not reducing the reliability of radiating element itself.
In some embodiments, the hollow conductive body is configured to hollow tubular structure.
In some embodiments, there are gaps between hollow conductive body and center conductor.
In some embodiments, the gap is filled air or the gap is completely filled or part is filled out
Charged media material.
In some embodiments, first dipole arm and second dipole arm are respectively configured on pcb board.
In some embodiments, the first band radiating element is low-frequency band radiating element, the second band spoke
Penetrating element is high frequency band radiating element.
In some embodiments, first dipole arm and second dipole arm all have multiple be separated from each other
Arm section, adjacent arm section are connected via corresponding filter.
In some embodiments, each filter includes the group of inductive element or inductive element and capacitive element
It closes.
In some embodiments, high-impedance behavior is presented in each filter in the second band, and in institute
It states and low impedance characteristic is presented in first band.
Second aspect according to the present utility model, provides a kind of multiband antenna, and the multiband antenna includes according to this
The first band radiating element and second band radiating element of utility model, first band and second band difference.
Detailed description of the invention
After following description is read in conjunction with the figure, many aspects of the utility model are better understood with,
In the accompanying drawings:
Fig. 1 a is the partial top view of traditional multiband antenna；
Fig. 1 b is the partial front elevation view of traditional multiband antenna；
Fig. 2 is the dipole arm structural schematic diagram of traditional multiband antenna；
Fig. 3 is the partial top view according to the multiband antenna of the utility model first embodiment；
Fig. 4 a is a kind of structural schematic diagram according to the second dipole arm of the utility model first embodiment；
Fig. 4 b is another structural schematic diagram according to the second dipole arm of the utility model first embodiment；
Fig. 5 is the partial top view according to the multiband antenna of the utility model second embodiment；
Fig. 6 is the partial top view according to the multiband antenna of the utility model 3rd embodiment；
Fig. 7 is the partial top view according to the multiband antenna of the utility model fourth embodiment；
Fig. 8 is the partial top view according to the multiband antenna of the 5th embodiment of the utility model；
Fig. 9 is the partial top view according to the multiband antenna of the utility model sixth embodiment；
Figure 10 is the partial top view according to the multiband antenna of the 7th embodiment of the utility model；
Figure 11 is the schematic diagram of the low frequency radiation element according to the present utility model based on printed circuit board；
Figure 12 is the second band radiating element and traditional multiband antenna of multiband antenna according to the present utility model
Second band radiating element lobe width performance diagram；
Figure 13 is the return loss characteristic curve of multiband antenna according to the present utility model and traditional multiband antenna
Figure.
Specific embodiment
Description specific embodiment of the present utility model that hereinafter reference will be made to the drawings, attached drawing therein show the utility model
Several embodiments.It should be understood, however, that the utility model can show in a number of different manners, do not limit to
In embodiment as described below；In fact, embodiment as described below is intended to make the disclosure of the utility model more complete, and to
Those skilled in the art absolutely prove the protection scope of the utility model.It is to be further understood that embodiment disclosed herein energy
It is enough to be combined in various ways, to provide more additional embodiments.
It should be understood that the terminology in specification is only used for description specific embodiment, it is no intended to it is practical to limit this
It is novel.All terms (including technical terms and scientific terms) that specification uses unless otherwise defined, all have this field skill
The normally understood meaning of art personnel.For the sake of concise and/or is clear, well known function or structure can be no longer described in detail.
Singular " one ", " described " and "the" that specification uses are unless clearly indicate, comprising plural form.Explanation
The terminology "include", "comprise" and " containing " that book uses indicate there is claimed feature, but there are one or more for repulsion
A other feature.The terminology "and/or" that specification uses includes related any and whole group for listing one or more of item
It closes.
In the description, the spatial relationship of "upper", "lower", "left", "right", "front", "rear", "high", " low " etc. is used
Diction can illustrate a feature and the relationship of another feature in the accompanying drawings.It should be understood that spatial relationship terminology in addition to comprising
It also include the different direction of device in use or operation except orientation shown in the drawings.For example, device in the accompanying drawings reverses
When, originally it was described as the feature in other feature " lower section ", was can be described as at this time in " top " of other feature.Device may be used also
To orient (be rotated by 90 ° or in other orientation) in other ways, relative space relation will be interpreted accordingly at this time.
It should be understood that in all the appended drawings, identical appended drawing reference indicates identical element.It in the accompanying drawings, is clear
The size of Chu Qijian, certain features can be deformed.
The first band radiating element of the utility model is suitable for a plurality of types of multiband antennas, is particularly suitable for having
The multiband antenna (such as ultra-broadband dual-frequency dual polarized antenna) of distributed mode radiating element." double frequency band aerial " refers to herein
It is the antenna with two types radiating element, both types radiating element runs in different bands, can usually transport
Row is in " low-frequency band " and " high frequency band ".For example, common double frequency band aerial include one or more columns per page low-frequency band radiating element with
And one or more columns per page high frequency band radiating element, the operation frequency band of the low-frequency band radiating element can be 617MHz to 960MHz or
Person's a part of range therein, the operation frequency band of the high frequency band radiating element can be 1710MHz to 2690MHz or wherein
A part of range.Here, term " multiband antenna " refers to that there are two or more to operate in the spoke of different frequency bands
Penetrate the antenna of element.Multiband antenna includes double frequency band aerial and the antenna that support services in three or more frequency bands.
A and 1b referring now to fig. 1 shows the partial top view and partial front elevation view of traditional multiband antenna.Multifrequency
It can be a kind of band dual-polarized antenna with distributed mode radiating element with antenna.As seen in figure la and lb, described to have
The band dual-polarized antenna of distributed mode radiating element includes low-frequency band radiating element 1 and high frequency band radiating element 2.Low-frequency band spoke
Penetrating element 1 and high frequency band radiating element 2 is double polarization radiating element, i.e., each low-frequency band radiating element 1 and high frequency band radiation
Element 2 is respectively provided with two antithesis polar arms to form corresponding dipole.The example of Fig. 1 a shows two column high frequency band radiating elements 2,
Each array is respectively provided with three high frequency band radiating elements 2.One low-frequency band radiating element 1 is shown on the outside of each array.
In other examples, it can be envisaged that have the high frequency band radiating element 2 for arranging more than two or arranging less than two, can be arranged in each column more
In three or less than three high frequency band radiating elements 2, and it can have and be more than in the outside of each column high frequency band radiating element 2
One low-frequency band radiating element 1.By in Fig. 1 b as it can be seen that low-frequency band radiating element 1 and high frequency band radiating element 2 have been separately equipped with
Feeder panel 5,5'.The feeder panel 5 of low-frequency band radiating element 1 is higher than the feeder panel 5' of high frequency band radiating element 2.
As can be seen that each low-frequency band radiating element 1 is even with first that the first dipole is collectively formed from Fig. 1 a and 1b
Polar arm 3 and the second dipole arm 4.First dipole arm 3 and the second dipole arm 4 are in the opposed arrangement in 180 degree angle.First dipole arm 3 is close
One or more high frequency band radiating elements 2 are arranged, and the second dipole arm 4 is arranged far from high frequency band radiating element 2.That is,
One or more high frequency band radiating elements 2 can be arranged near the lower zone of the first dipole arm 3, and far from the second dipole
The lower zone of arm 4.In the example shown, the first dipole arm 3 and the second dipole arm 4 all have four arm sections 6, and described four
A arm section 6 is along the axially spaced from each other of each dipole arm and has basically the same length.First dipole arm 3 and
There is two dipole arms 4 arrangement of identical arms the number of sections to be known as " symmetrical dipole ".In other examples, the first dipole arm
3 and second dipole arm 4 can have the arm section 6 of the identical quantity more than 4 or less than 4.
Currently, the significant challenge of the multiband antenna design with distributed mode radiating element is the spoke reduced on a frequency band
Element is penetrated to the scattering interference of the radiating element on another frequency band, this scattering influences the performances such as the beam forming of antenna.In band
In the band dual-polarized antenna for having distributed mode radiating element, dissipated to reduce low-frequency band radiating element to high frequency band radiating element
Blackberry lily is disturbed, and multiple arm sections being separated from each other are introduced in the dipole arm of low-frequency band radiating element to rise as radio-frequency choke
Effect may be advantageous, and reason is to introduce the one or more chokes to resonate on high frequency band or near high frequency band,
This, which can effectively reduce low-frequency band radiating element, influences the scattering of high frequency band radiating element.
Fig. 2 shows the schematic diagrames of the first dipole arm 3 constructed according to above-mentioned principle.Second dipole arm 4 has corresponding
Design form.It can be seen in fig. 2 that dipole arm includes center conductor 7 and the arm section 6 around the setting of center conductor 7.It leads at center
Body 7 include four protruding portions 9, four protruding portions 9 since one end of center conductor 7 in be arranged in axially spaced from each otherly
On heart conductor 7, center conductor 7 is thus divided into four conductive segments 10.There are four arm section 6 correspondingly has, and it is configured to
Empty electric conductor, the hollow conductive body have hollow cylindrical shape or cylindrical-shaped structure.
The protruding portion 9 that each hollow conductive body is radially extended at one end through one of center conductor 7 connects with conductive segment 10
It is logical, that is to say, that each arm section 6 is short-circuit with center conductor 7 at one end.Each hollow conductive body is led in the other end and center
The conductive segment 10 of body 7 disconnects, that is to say, that arm section 6 is in 7 open circuit of the other end and center conductor.It is a kind of so-called to form as a result,
Choke, i.e. the gap between hollow conductive body 8 and center conductor 7 and the gap between each hollow conductive body 8.This
The usually fillable air in a little gaps, thus generates preferable signal inhibitory effect；In other embodiments, these gaps can also be complete
Full packing is partially filled with other dielectric substances.
The quantity and length of each arm section 6 can make adaptation according to the actual motion frequency of high frequency band radiating element 2
Property adjustment, so that it is dry to the scattering in the actual motion frequency range of high frequency band radiating element 2 to reduce low-frequency band radiating element 1
It disturbs, so as to improve low-frequency band radiating element 1 to " Stealth Fighter " of high frequency band radiating element 2.However, due to containing on dipole arm
The return loss performance of the increase of some arm the number of sections, low-frequency band radiating element 1 itself is deteriorated.Return loss, also known as instead
Penetrate loss and be mainly caused by the reflection due to caused by impedance mismatch reflect reflected wave powers and incident power it
Than.Since with the increase of arm the number of sections, the impedance of dipole arm is become very large, therefore the impedance of dipole arm and feeder panel 5
The matching of impedance become extremely difficult.
Referring now to Fig. 3, the partial top view of the multiband antenna of the utility model first embodiment is shown.It shows
Two low-frequency band radiating elements 101 and six high frequency band radiating elements 201.Each low-frequency band radiating element 101 is even with first
Polar arm 301 and the second dipole arm 401.First dipole arm 301 and the second dipole arm 401 are in the opposed arrangement in 180 degree angle.First dipole
Arm 301 is arranged close to high frequency band radiating element 201, and the second dipole arm 401 is arranged far from high frequency band radiating element 201.Institute
In example, there are four the arm sections 601 being separated from each other for the first dipole arm 301 tool, and four arm sections 601 have substantially
Upper identical length.However, in the present embodiment, the second dipole arm 401 has less arm the number of sections.Second dipole arm
401 only have there are three the arm section 601 being separated from each other, and intermediate arm section is longer than the arm section of two sides.First dipole
There is the arrangement of dissimilar arm the number of sections to be known as " asymmetric formula dipole " for arm 301 and the second dipole arm 401.In other examples
In, the first dipole arm 301 can have the arm section 601 more than 4 or less than 4, and the second dipole arm 401, which can have, to be more than
3 or less than 3 arm sections 601, as long as two dipole arms have different arm the number of sections.
The structure of first dipole arm 301 is similar with traditional design, as shown in Fig. 2, details are not described herein.Referring now to figure
4a shows a kind of structural schematic diagram of the second dipole arm 401 of the utility model first embodiment.Second dipole arm 401 includes
Center conductor 701 and the arm section 601 being arranged around center conductor 701.Center conductor 701 includes four protrusions radially extended
Portion 901, four protruding portions 901 are since one end of center conductor 701 along centrally disposed conductor axially spaced from each otherly
On 701, center conductor 701 is thus divided into four conductive segments 1001.
Arm section 601 is configured to hollow conductive body, and the hollow conductive body has hollow cylindrical shape or cylinder
Shape structure.There are three arm sections 601 for tool in the second dipole arm 401, i.e., intermediate arm section and outer webs section are (i.e. far from feed
The arm section at end) and inner webs section (i.e. close to the arm section of feed end), and intermediate arm section is than outer webs section and interior
Side arm section is long.On outer side arm section and inner webs section, hollow conductive body is dashed forward at one end through one of center conductor 701
Portion 901 and conductive segment 1001 are connected out, and are disconnected in the conductive segment 1001 of the other end and center conductor 701, are consequently formed and are gripped
Flow device.On intermediate arm section, hollow conductive body extends across two adjacent protruding portions 901, and respectively at one end
It is connected at portion and with two protruding portions 901 at in-between position.Intermediate arm section can be about outer webs section or inner webs
Twice of section length.Because the second dipole arm upper arm the number of sections are reduced, impedance becomes smaller and impedance matching also becomes
It is less difficult, so as to improve the return loss of low-frequency band radiating element itself.
Referring now to Fig. 4 b, another structure for showing the second dipole arm 401 of the utility model first embodiment is shown
It is intended to.Second dipole arm 401 includes three arm sections 601, i.e. intermediate arm section and outer webs section and inner webs section,
In, intermediate arm section is between outer webs section and inner webs section and longer than outer webs section and inner webs section.With
Unlike in Fig. 4 a, the conductive segment between two adjacent protrusions 901 in the embodiment of Fig. 4 b, in intermediate arm section
1001 are removed, that is, are only provided with air or other dielectrics between two protruding portions 901 being present in intermediate arm section
Material.This can be substantially reduced the manufacturing cost of radiating element, while nor affect on the reliability of radiating element itself.
For the low-frequency band radiating element 101 of first embodiment, close to the first of 201 array of high frequency band radiating element
There are four arm sections for the tool of dipole arm 301, and there are three arms for the tool of the second dipole arm 401 far from 201 array of high frequency band radiating element
Section.This arrangement makes low-frequency band radiating element 101 be maintained at lower to the scattering of high frequency band radiating element 201 influence
It is horizontal, that is to say, that " Stealth Fighter " is good；Furthermore the return loss performance of low-frequency band radiating element 101 itself is further improved,
Thus improve the performance of double frequency band aerial on the whole.
Referring now to Fig. 5, the partial top view of the multiband antenna according to the utility model second embodiment is shown.It is low
Band radiating elements 102 have the first dipole arm 302 and the second dipole arm 402.First dipole arm 302 is close to high frequency band radiation element
Part 202 is arranged, and the second dipole arm 402 is arranged far from high frequency band radiating element 202.In the example shown, the first dipole arm 302
There are four the arm sections 602 being separated from each other for tool, and four arm sections 602 have basically the same length.Second dipole
Arm 402 only has that there are three the arm sections 602 that are separated from each other, i.e. outer webs section, intermediate arm section and inner webs section.With this
Unlike utility model first embodiment, the intermediate arm section of second embodiment is identical with inner webs section length, and outer
Side arm section is longer than intermediate arm section and inner webs section.
Referring now to Fig. 6, the partial top view of the multiband antenna according to the utility model 3rd embodiment is shown.It is low
Band radiating elements 103 have the first dipole arm 303 and the second dipole arm 403.First dipole arm 303 is close to high frequency band radiation element
Part 203 is arranged, and the second dipole arm 403 is arranged far from high frequency band radiating element 203.In the example shown, the first dipole arm 303
There are four the arm sections 603 being separated from each other for tool, and four arm sections 603 have basically the same length.Second dipole
Arm 403 only has that there are three the arm sections 603 that are separated from each other, i.e. outer webs section, intermediate arm section and inner webs section.With this
Unlike utility model the first and second embodiments, the intermediate arm section of 3rd embodiment is identical with outer webs section length,
And inner webs section is longer than intermediate arm section and outer webs section.
Referring now to Fig. 7, the partial top view of the multiband antenna according to the utility model fourth embodiment is shown.It is low
Band radiating elements 104 have the first dipole arm 304 and the second dipole arm 404.First dipole arm 304 is close to high frequency band radiation element
Part 204 is arranged, and the second dipole arm 404 is arranged far from high frequency band radiating element 204.In the example shown, the first dipole arm 304
There are four the arm sections 604 being separated from each other for tool, and four arm sections 604 have basically the same length.It is practical with this
Unlike novel first, second, and third embodiment, the second dipole arm 404 of fourth embodiment only have there are two be spaced each other
The arm section 604 opened, i.e. outer webs section and inner webs section.The outer webs section has substantially phase with inner webs section
Same length.But, not shown here, in other embodiments, the second dipole arm 404 can be with shown in Fig. 7 second
The length having the same of dipole arm 404, but can have three arm sections of substantially the same length, rather than in Fig. 7
Two arm sections.In such embodiments, in each arm section ratio Fig. 7 of the second dipole arm 404 second dipole arm arm area
Section 604 is shorter, but more shorter than the arm section 604 of the first dipole arm 304 in Fig. 7.
Referring now to Fig. 8, the partial top view of the multiband antenna according to the 5th embodiment of the utility model is shown.It is low
Band radiating elements 105 have the first dipole arm 305 and the second dipole arm 405.First dipole arm 305 is close to high frequency band radiation element
Part 205 is arranged, and the second dipole arm 405 is arranged far from high frequency band radiating element 205.In the example shown, the first dipole arm 305
There are four the arm sections 605 being separated from each other for tool, and four arm sections 605 have basically the same length.Second dipole
Arm 405 only has that there are two the arm sections 605 that are separated from each other, i.e. outer webs section and inner webs section.With the utility model
Unlike four embodiments, the inner webs section of the 5th embodiment is longer than outer webs section.
Referring now to Fig. 9, the partial top view of the multiband antenna according to the utility model sixth embodiment is shown.It is low
Band radiating elements 106 have the first dipole arm 306 and the second dipole arm 406.First dipole arm 306 is close to high frequency band radiation element
Part 206 is arranged, and the second dipole arm 406 is arranged far from high frequency band radiating element 206.In the example shown, the first dipole arm 306
There are four the arm sections 606 being separated from each other for tool, and four arm sections 606 have basically the same length.Second dipole
Arm 406 only has that there are two the arm sections 606 that are separated from each other, i.e. outer webs section and inner webs section.With the utility model
Unlike five embodiments, the outer webs section of sixth embodiment is longer than inner webs section.
Referring now to fig. 10, show the partial top view of the multiband antenna according to the 7th embodiment of the utility model.
Low-frequency band radiating element 107 has the first dipole arm 307 and the second dipole arm 407.First dipole arm 307 is radiated close to high frequency band
Element 207 is arranged, and the second dipole arm 407 is arranged far from high frequency band radiating element 207.In the example shown, the first dipole arm
There are four the arm sections 607 being separated from each other for 307 tools, and four arm sections 607 have basically the same length.With this
Unlike utility model first to sixth embodiment, the second dipole arm 407 of the 7th embodiment is configured to a continuous arm
Section.
Referring now to fig. 11, show the low-frequency band radiating element 108 according to the present utility model based on printed circuit board
Schematic diagram.Low-frequency band radiating element 108 has the first dipole arm 308 and the second dipole arm 408 (although not showing in Figure 11
High frequency band radiating element out, but still the dipole arm that will be close to high frequency band radiating element is known as the first dipole arm 308, and will be far from
The dipole arm of high frequency band radiating element is known as the second dipole arm 408).First dipole arm 308 and the second dipole arm 408 are in 180 degree
The opposed arrangement in angle.In the example shown, the first dipole arm 308 has 3 arm sections, and the second dipole arm 408 has 2 areas Ge Bei
Section.Filter FL is connected between adjacent arm section, the filter FL is made of inductance and capacitor.Therefore, first is even
There are two filter FL for the tool of polar arm 308, and the second dipole arm 408 has a filter FL.Since filter FL is in high frequency band
Middle presentation high-impedance behavior, and low impedance characteristic is presented in low-frequency band, so the interference to high frequency band can be improved, and same
Shi Gaishan return loss performance.In other examples, the first dipole arm 308 can have more than 3 or less than 3 areas Ge Bei
Section, the second dipole arm 408 can have the arm section of more than two or less than 2, if meet desired return loss performance and
Stealth Fighter.
Referring now to fig. 12, show the second band radiating element and tradition of multiband antenna according to the present utility model
Multiband antenna second band radiating element lobe width performance diagram.In figure, the curve with square represents tradition
Multiband antenna second band radiating element lobe width characteristic curve；Curve with triangle represents the utility model
Multiband antenna second band radiating element lobe width characteristic curve.Traditional multiband antenna has band " symmetrical
The first band radiating element of formula dipole ", and the multiband antenna of the utility model has the first of band " asymmetric formula dipole "
Band radiating elements.From the figure, it can be seen that the lobe width at each Frequency point is substantially not much different in the case of two kinds.
Although it follows that the second dipole arm of the first band radiating element of the utility model have less arm section, due to
Second dipole arm is far from second band radiating element, and the first dipole arm close to second band radiating element still maintains more
Arm section (such as with arm section identical in traditional design), so that first band radiating element is to second band radiating element
Interference keep reduced levels.Therefore, the lobe width of the second band radiating element of the utility model is not due to " asymmetric
Formula dipole " and be deteriorated.
Referring now to fig. 13, show the echo of multiband antenna according to the present utility model and traditional multiband antenna
Loss characteristic curve figure.In figure, the curve with hollow square represents the return loss characteristic curve of traditional multiband antenna；Its
The middle curve with closed square represents the return loss characteristic curve of the multiband antenna of the utility model.Traditional multiband day
Line has the first band radiating element of band " symmetrical dipole ", and the multiband antenna of the utility model has band " asymmetric
The first band radiating element of formula dipole ".As we can see from the figure: two curves at the both ends of frequency band, i.e. in 0.617GHz and
It is substantially the same at 0.806GHz；To between 0.7304GHz among frequency band, for example in 0.6737GHz, the utility model is returned
Wave loss is significantly lower than traditional design, such as at 0.7115GHz, and the return loss of traditional design is -13.14dB, and this reality
It is -19.77dB with novel return loss.It can be seen that " the asymmetric formula dipole " of the utility model is with significant lower
Return loss.It should be noted that the first band radiating element of the utility model according to actual motion frequency range, can be adjusted
Embodiment, so that return loss keeps reduced levels in the operation frequency range.
Although it have been described that the example embodiment of the utility model, it will be understood by those skilled in the art that
The example embodiment of the utility model can be carried out in the case where being without materially departing from the spirit and scope of the utility model
A variety of changes and modifications.Therefore, all changes and change are all contained in the protection model of the utility model defined by claim
In enclosing.The utility model is defined by the appended claims, and the equivalent of these claims is also included.
Claims (20)
1. a kind of first band radiating element for multiband antenna, which is characterized in that the first band radiating element packet
At least one first band dipole is included, the first band dipole has the first dipole arm and the second dipole arm, the first dipole arm
It include one or more arm sections with each of the second dipole arm, the quantity of the arm section contained in the first dipole arm is more
In the quantity of the arm section contained in the second dipole arm.
2. the first band radiating element according to claim 1 for multiband antenna, which is characterized in that the multifrequency
Band antenna further includes multiple second band radiating elements, and the second band radiating element is different from first band radiating element
Frequency band in operation.
3. the first band radiating element according to claim 2 for multiband antenna, which is characterized in that even second
Minimum range between polar arm and any one second band radiating element is greater than in the first dipole arm and any one second band spoke
Penetrate the minimum range between element.
4. the first band radiating element according to claim 3 for multiband antenna, which is characterized in that at least one
Second band radiating element is arranged near the lower zone of the first dipole arm, and at least one second band radiating element is remote
Lower zone from the second dipole arm.
5. the first band radiating element according to any one of claim 1 to 4 for multiband antenna, feature exist
In, the first dipole arm and the second dipole arm in the opposed arrangement in 180 degree angle.
6. the first band radiating element according to any one of claim 1 to 4 for multiband antenna, feature exist
In the first dipole arm and the second dipole arm include center conductor and multiple arm sections around center conductor setting, wherein institute
Multiple arm sections are stated to be separated from each other along center conductor.
7. the first band radiating element according to claim 6 for multiband antenna, which is characterized in that at least one
Arm section includes hollow conductive body, wherein the hollow conductive body is connected with center conductor at one end, is led in the other end and center
Body disconnects.
8. the first band radiating element according to claim 7 for multiband antenna, which is characterized in that multiple protrusions
Center conductor along centrally disposed conductor axially spaced from each otherly, is thus divided into more by portion since one end of center conductor
A conductive segment, the hollow conductive body are connected on the protruding portion with the center conductor.
9. the first band radiating element according to claim 8 for multiband antenna, which is characterized in that even second
In polar arm, at least two adjacent protruding portions pass through the hollow conductive body electrical communication.
10. the first band radiating element according to claim 9 for multiband antenna, which is characterized in that connect institute
The hollow conductive body for stating at least two adjacent protruding portions is arranged in end regions or the intermediate region of the second dipole arm.
11. the first band radiating element according to claim 9 or 10 for multiband antenna, which is characterized in that
Conductive segment between described at least two adjacent protruding portions is removed.
12. the first band radiating element according to claim 7 for multiband antenna, which is characterized in that in described
Empty electric conductor is configured to hollow tubular structure.
13. being used for the first band radiating element of multiband antenna according to claim 7 or 12, which is characterized in that
There are gaps between hollow conductive body and center conductor.
14. the first band radiating element according to claim 13 for multiband antenna, which is characterized in that between described
Gap is filled air or the gap is completely filled or is partially filled with dielectric substance.
15. being used for the first band radiating element of multiband antenna according to one of claim 2 to 4, which is characterized in that
The first band radiating element is low-frequency band radiating element, and the second band radiating element is high frequency band radiating element.
16. being used for the first band radiating element of multiband antenna according to one of claim 2 to 4, which is characterized in that
First dipole arm and second dipole arm are respectively configured on pcb board.
17. the first band radiating element according to claim 16 for multiband antenna, which is characterized in that described
One dipole arm and second dipole arm all have multiple arm sections being separated from each other, and adjacent arm section is via corresponding filter
The connection of wave device.
18. the first band radiating element according to claim 17 for multiband antenna, which is characterized in that Mei Gesuo
State the combination that filter includes inductive element or inductive element and capacitive element.
19. the first band radiating element according to claim 18 for multiband antenna, which is characterized in that Mei Gesuo
Stating filter is the filter that high-impedance behavior is presented in the second band and low impedance characteristic is presented in the first band
Wave device.
20. a kind of multiband antenna, which is characterized in that the multiband antenna includes according to claim 1 to described in one of 19
For the first band radiating element of multiband antenna and including second band radiating element, the first band and second
Frequency band is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821391604.3U CN208904208U (en) | 2018-08-28 | 2018-08-28 | First band radiating element and multiband antenna for multiband antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821391604.3U CN208904208U (en) | 2018-08-28 | 2018-08-28 | First band radiating element and multiband antenna for multiband antenna |
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| Publication Number | Publication Date |
|---|---|
| CN208904208U true CN208904208U (en) | 2019-05-24 |
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| CN201821391604.3U Expired - Fee Related CN208904208U (en) | 2018-08-28 | 2018-08-28 | First band radiating element and multiband antenna for multiband antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020046551A1 (en) * | 2018-08-28 | 2020-03-05 | Commscope Technologies Llc | Radiating element for multi-band antenna and multi-band antenna |
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2018
- 2018-08-28 CN CN201821391604.3U patent/CN208904208U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020046551A1 (en) * | 2018-08-28 | 2020-03-05 | Commscope Technologies Llc | Radiating element for multi-band antenna and multi-band antenna |
| US11456542B2 (en) | 2018-08-28 | 2022-09-27 | Commscope Technologies Llc | Radiating element for multi-band antenna and multi-band antenna |
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