CN101604790A - Antenna - Google Patents
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- CN101604790A CN101604790A CNA2008101149520A CN200810114952A CN101604790A CN 101604790 A CN101604790 A CN 101604790A CN A2008101149520 A CNA2008101149520 A CN A2008101149520A CN 200810114952 A CN200810114952 A CN 200810114952A CN 101604790 A CN101604790 A CN 101604790A
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Abstract
The invention discloses a kind of antenna, comprise at least two row's bays, there is at least one second antenna oscillator in the row's bay of back, the part or all of zone of described second antenna oscillator is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and the distance of the front-seat bay at described a pair of adjacent antenna oscillator place and back row's bay at the described second antenna oscillator place is in prescribed limit.Adopt the present invention program, can reduce of the interference of front-seat bay, thereby improve the figuration gain of smart antenna back row's bay electromagenetic wave radiation.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of antenna.
Background technology
Adopting intelligent antenna technology is 3G (Third Generation) Moblie technology (3G, 3rd Generation) TD SDMA inserts one of several big key technologies in (TD-SCDMA, Time Division Synchronized Code Division MultipleAccess) system.The advantage of smart antenna is: the relevant principle of wave beam that can utilize many array-element antenna is to different user difference wave beam forming, thus realization space division multiple access (SDMA, SpaceDivision Multiple Access); Wave beam forming can effectively reduce the interference in minizone and the sub-district; By wave beam forming, can concentrate energy, effectively improve signal strength signal intensity, thereby reduce the transmitting power of base station and mobile phone, improve power system capacity and quality, expand the coverage area; Can also be according to user's arrival bearing, the user location of providing convenience economic.
Typical smart antenna is the single antennas of 8 array element linear arrays, as shown in Figure 1, the horizontal area of this antenna is bigger, the double alignment battle array plate antenna of recent corresponding proposition, as shown in Figure 2, solved the excessive problem of original antenna horizontal area, yet in the antenna that a plurality of array elements are formed, phase mutual interference between array element is to need conscientiously to solve when making antenna, and the problem that is not easy to solve, have only the phase mutual interference between array element is reduced to minimum, the overall performance of antenna could satisfy requirement of actual application.And the double alignment battle array plate antenna that proposes in the recent period because the double row of array element are put (along direction of wave travel, with the front-seat antenna of double antenna called after and back row's antenna), makes front-seat bay cause interference to the electromagenetic wave radiation of back row's bay.For example four bays are put at the front row among Fig. 2, the mode that back row puts three bays makes the electromagnetic wave of arranging bay in the back along direction of wave travel, when front-seat direction is propagated, be subjected to stopping of front-seat bay easily, thereby reduced the figuration gain of smart antenna.
Summary of the invention
The invention provides a kind of antenna, to reduce of the interference of front-seat bay to back row's bay electromagenetic wave radiation.
The embodiment of the invention provides a kind of antenna, comprise at least two row's bays, there is at least one second antenna oscillator in the row's bay of back, the part or all of zone of described second antenna oscillator is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and the distance of the front-seat bay at the described a pair of adjacent first antenna oscillator place and back row's bay at the described second antenna oscillator place is in prescribed limit.
The antenna that the embodiment of the invention proposes, the part or all of zone of back row's antenna oscillator is between the front-seat a pair of adjacent antenna oscillator, makes that having reduced front-seat bay disturbs the electromagenetic wave radiation of back row's bay, thereby has improved the figuration gain of antenna.
Description of drawings
Fig. 1 is the schematic diagram of the tabular single antenna structure of 8 array element linear arrays in the prior art;
Fig. 2 is the schematic diagram of double alignment battle array plate antenna structure in the prior art;
Fig. 3 is the gain contrast figure of different length antenna oscillator;
Fig. 4 a is first view that oscillator is put in first kind of antenna proposing of the embodiment of the invention;
Fig. 4 b is second view that oscillator is put in first kind of antenna proposing of the embodiment of the invention;
Fig. 5 a is first view that oscillator is put in second kind of antenna proposing of the embodiment of the invention;
Fig. 5 b is second view that oscillator is put in second kind of antenna proposing of the embodiment of the invention;
Fig. 6 a is first view that oscillator is put in the third antenna of proposing of the embodiment of the invention;
Fig. 6 b is second view that oscillator is put in the third antenna of proposing of the embodiment of the invention.
Embodiment
The antenna that the embodiment of the invention proposes is: the part or all of zone of back row's antenna oscillator is between the front-seat a pair of adjacent antenna oscillator.
Below in conjunction with Figure of description the specific embodiment of the present invention is described.Be that example illustrates with double antenna all among the following embodiment of the present invention, the antenna of embodiment of the invention proposition also can be mattress array certainly.
Fig. 3 is the gain contrast figure of different length antenna oscillator, when providing symmetrical dipole length among the figure and being respectively 0.25 λ, 0.5 λ, 0.75 λ and λ (λ is an operation wavelength), maximum gain is increased to about 3 gain contrast figure from about 1.8, as seen from the figure, under same frequency, along with the increase of symmetrical dipole length, the vertical beam width of far-field pattern can reduce gradually, and maximum gain can increase accordingly.Certainly, if oscillator is asymmetric, under same frequency, along with the increase of this oscillator length, the vertical beam width of far-field pattern also can reduce gradually, and maximum gain also can increase accordingly.
As from the foregoing, if the length of front-seat antenna oscillator is less than the length of back row's antenna oscillator, the vertical beamwidth of so front-seat antenna oscillator is greater than the vertical beamwidth of back row's antenna oscillator, and the maximum gain of front-seat antenna oscillator is less than the maximum gain of back row's antenna oscillator, and antenna oscillator is electromagnetic to be stopped to afterwards arranging thereby reduced front-seat antenna oscillator;
In addition, if back row's antenna oscillator is in (or the part of back row's antenna oscillator is between the front-seat a pair of adjacent antenna oscillator) between the front-seat a pair of adjacent antenna oscillator, the electromagnetic wave of back row's antenna oscillator can pass a pair of adjacent antenna oscillator in this front row preferably, and promptly front-seat bay stops less to the electromagenetic wave radiation of back row's bay.
In sum, in order to reduce of the electromagenetic wave radiation interference of front-seat aerial array to back row's aerial array, the embodiment of the invention has proposed a kind of antenna, comprise at least two row's bays, the length that in front-seat bay, has at least one first antenna oscillator, in the row's bay of adjacent back, with the length of second antenna oscillator of described first antenna oscillator distance in prescribed limit.
Certainly, the antenna that the embodiment of the invention proposes also can be the length of each first antenna oscillator in front-seat all bays, all less than in the row's bay of adjacent back, with the length of second antenna oscillator of this first antenna oscillator distance in prescribed limit.
Moreover the antenna that the embodiment of the invention proposes can also be the length of all first antenna oscillators in front-seat all bays, all length of arranging all second antenna oscillators in all bays less than adjacent back.
Below with in all two adjacent row's bays, the length of all front-seat antenna oscillators is that example illustrates less than the length of all back row's antenna oscillators all, shown in Fig. 4 a and Fig. 4 b, Z axle forward is represented direction of wave travel, antenna oscillator on the X-direction is in (bay vertical ground placement on the same antenna array element, antenna oscillator is included in the bay, antenna oscillator also is that vertical ground is placed, also be that X-direction is the direction of vertical ground), along Z-direction (Z-direction is the direction that is parallel to ground), the length of front-seat antenna oscillator is short, and the length of back row's antenna oscillator is long.Front-seat antenna oscillator length range is: between 0.25 λ～0.5 λ, back row's antenna oscillator length range is: between 0.5 λ～λ.
Because if back row's antenna oscillator is in (or the part of back row's antenna oscillator is between the front-seat a pair of adjacent antenna oscillator) between the front-seat a pair of adjacent antenna oscillator, then the electromagnetic wave of back row antenna oscillator can pass a pair of adjacent antenna oscillator in this front row preferably, be that the electromagenetic wave radiation that front-seat bay is arranged bay to the back stops less, so the embodiment of the invention has also proposed another kind of antenna, comprise at least two row's bays, there is at least one second antenna oscillator in the row's bay of back, the part or all of zone of described second antenna oscillator is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and the distance of the front-seat bay at the described a pair of adjacent first antenna oscillator place and back row's bay at the described second antenna oscillator place is in prescribed limit.
Preferable, in order to reduce the electromagnetic interference of front-seat antenna oscillator as far as possible to back row's antenna oscillator, can make that each second antenna oscillator all has part or all of zone in back row's bay, be between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row.
Certainly, the antenna that the embodiment of the invention proposes also can be the mid point of each second antenna oscillator in the row's bay of back, all is in the mid point of the first a pair of adjacent antenna oscillator spacing at least one bay of adjacent front row.
With each second antenna oscillator in the row's bay of back part or all of zone is arranged all below, be between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and the polarised direction of all antenna oscillators is consistent to be that example illustrates, the described adjacent antenna oscillator of the embodiment of the invention refers to be in adjacent two antenna oscillators on the same antenna array element.Shown in Fig. 5 a and Fig. 5 b, Z axle forward is represented direction of wave travel, and the antenna oscillator on the X-direction is on the same antenna array element, on same antenna array element, and the spacing of adjacent two antenna oscillators, front-seat big back row is little.Front-seat same column adjacent vibration generators (promptly being in adjacent two antenna oscillators on the same antenna array element) spacing range is: front-seat same column adjacent vibration generators central point spacing is between 0.5 λ～λ, and back row's same column adjacent vibration generators spacing range is: back row's same column adjacent vibration generators central point spacing is between 0.5 λ～λ.And shown in Fig. 5 a and Fig. 5 b, all antenna oscillators of back row all have at least the subregion to be on the position between the front-seat a pair of adjacent antenna oscillator, promptly the part of back row antenna oscillator is in the position between front-seat adjacent two antenna oscillators, the remaining another part of back row's antenna oscillator can with the part of front-seat certain antenna oscillator mapping overlaid in X-axis, certainly, antenna oscillator is electromagnetic to be stopped to afterwards arranging in order to reduce front-seat antenna oscillator as far as possible, preferable, can make on the position between the front-seat a pair of adjacent antenna oscillator of being in all of back row's antenna oscillator, so that the electromagnetic wave of back row's antenna oscillator can pass a pair of adjacent antenna oscillator in this front row preferably, thereby make front-seat bay stop less to the electromagenetic wave radiation of back row's bay.
The embodiment of the invention has also proposed the third antenna, comprise at least two row's bays, the length that has at least one first antenna oscillator in front-seat bay is in the row's bay of adjacent back, with the length of second antenna oscillator of described first antenna oscillator distance in prescribed limit; And there is at least one second antenna oscillator in the row's bay of back, the part or all of zone of described second antenna oscillator is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and the distance of the front-seat bay at the described a pair of adjacent first antenna oscillator place and back row's bay at the described second antenna oscillator place is in prescribed limit.
Preferable, in order to reduce the electromagnetic interference of front-seat antenna oscillator as far as possible to back row's antenna oscillator, can be so that the length of all first antenna oscillators in front-seat all bays, all length of arranging all second antenna oscillators in all bays less than adjacent back; And each second antenna oscillator all has part or all of zone in the row's bay of back, is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row.
Preferable, in order to reduce the electromagnetic interference of front-seat antenna oscillator as far as possible to back row's antenna oscillator, also can make the mid point of each second antenna oscillator in the row's bay of back, all be in the mid point of the first a pair of adjacent antenna oscillator spacing at least one bay of adjacent front row.Promptly the mid point of all back row's antenna oscillators is done vertical line to front-seat each bay, all intersects on the mid point of front-seat adjacent two antenna oscillator spacings.
Below with in all two adjacent row's bays, the length that the length of all front-seat antenna oscillators is all arranged antenna oscillators less than all backs, and in all two adjacent row's bays, each second antenna oscillator all has part or all of zone in the row's bay of back, be between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and in all two adjacent row's bays, the mid point of all back row's antenna oscillators is done vertical line to front-seat each bay, all intersect on the mid point of front-seat adjacent two antenna oscillator spacings and illustrate for example, shown in Fig. 6 a and Fig. 6 b, Z axle forward is represented direction of wave travel, antenna oscillator on the X-direction is on the same antenna array element, along Z-direction, the length of front-seat antenna oscillator is short, and the length of back row's antenna oscillator is long.On same antenna array element, the spacing of adjacent two antenna oscillators, front-seat big back row is little.Wherein: front-seat antenna oscillator length range is: between 0.25 λ～0.5 λ.Back row's antenna oscillator length range is: between 0.5 λ～λ; Front-seat same column adjacent vibration generators (adjacent two antenna oscillators that promptly belong to same antenna array element) spacing range is: between 0.5 λ～λ.Back row's same column adjacent vibration generators spacing range is: back row's same column adjacent vibration generators central point spacing is between 0.5 λ～λ.In the present embodiment, in all two adjacent row's bays, the mid point of all back row's antenna oscillators is done vertical line to front-seat each bay, all intersects on the mid point of front-seat adjacent two antenna oscillator spacings.Promptly in all adjacent two row's bays, the mid point of all front-seat adjacent two antenna oscillator spacings is on the same plane perpendicular to ground with back at least one antenna oscillator of row.Described adjacent two antenna oscillators refer to be in two adjacent antenna oscillators on the same antenna array element, adopt the front-seat antenna oscillator of avoiding that this mode can be preferable to arrange the interference of antenna oscillator electromagenetic wave radiation for the back.
The embodiment of the invention is put the requirement that provides to the front and rear row oscillator and comprised: front-seat aerial array increases the space between oscillator with the long oscillator of galianconism, thereby reduces the radiation blocking to back row's antenna oscillator; Back row's aerial array is with the oscillator of long-armed length, dwindling vertical beamwidth, and then improves and gains; Back row's antenna oscillator mid point is done vertical line to front-seat each bay, intersects on the mid point of front-seat adjacent two antenna oscillator spacings.Put the figuration effect that can reduce radiation blocking and improve entire antenna by above oscillator.Be that this array element constructive method comprises: front-seat oscillator is short, and spacing is big slightly; Back row's oscillator is long, and spacing is short slightly.
Structure the formation by above-mentioned oscillator disposing way, in antenna oscillator length and gap variable scope, divide into groups to test, can further find suitable oscillator length and element spacing to improve the whole figuration gain of antenna, the while has kept the consistency of beam of unit substantially.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (3)
1, a kind of antenna, comprise at least two row's bays, it is characterized in that, there is at least one second antenna oscillator in the row's bay of back, the part or all of zone of described second antenna oscillator is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row, and the distance of the front-seat bay at the described a pair of adjacent first antenna oscillator place and back row's bay at the described second antenna oscillator place is in prescribed limit.
2, antenna as claimed in claim 1 is characterized in that, each second antenna oscillator all has part or all of zone in the row's bay of back, is between the first a pair of adjacent antenna oscillator at least one bay of adjacent front row.
3, antenna as claimed in claim 2 is characterized in that, the mid point of each second antenna oscillator in the bay is arranged in the back, all is in the mid point of the first a pair of adjacent antenna oscillator spacing at least one bay of adjacent front row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101149520A CN101604790A (en) | 2008-06-13 | 2008-06-13 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101149520A CN101604790A (en) | 2008-06-13 | 2008-06-13 | Antenna |
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| Publication Number | Publication Date |
|---|---|
| CN101604790A true CN101604790A (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101149520A Pending CN101604790A (en) | 2008-06-13 | 2008-06-13 | Antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052084A (en) * | 2011-10-13 | 2013-04-17 | 中国移动通信集团设计院有限公司 | Intelligent antenna and wave beam adjustment method thereof |
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2008
- 2008-06-13 CN CNA2008101149520A patent/CN101604790A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052084A (en) * | 2011-10-13 | 2013-04-17 | 中国移动通信集团设计院有限公司 | Intelligent antenna and wave beam adjustment method thereof |
| CN103052084B (en) * | 2011-10-13 | 2015-05-20 | 中国移动通信集团设计院有限公司 | Intelligent antenna and wave beam adjustment method thereof |
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Application publication date: 20091216 |