CN206422220U - A kind of low frequency radiating element - Google Patents
A kind of low frequency radiating element Download PDFInfo
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- CN206422220U CN206422220U CN201621382355.2U CN201621382355U CN206422220U CN 206422220 U CN206422220 U CN 206422220U CN 201621382355 U CN201621382355 U CN 201621382355U CN 206422220 U CN206422220 U CN 206422220U
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- radiating element
- balun
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Abstract
The utility model discloses doublet, the two pairs of symmetrical baluns of identical of base and installation on the base of a kind of low frequency radiating element, including two pairs of identical bendings；Two pairs of doublets surround square bore, two baluns in two a period of time and the symmetrical balun of each pair in each pair doublet are with the diagonal correspondence of square bore, each a period of time includes two identical a period of time arms, and the angle of two a period of time arms is 90 °, each a period of time arm includes the first radiation arm joint collinearly connected and the second radiation arm joint, each a period of time arm has extended in vertical direction vertical plane, metal semicolumn is protruded on the inside of the vertical plane of each a period of time arm, each balun includes two symmetrical arms side by side, the arm of each balun is made up of tilting section and top vertical section, tilting section is connected with base, top vertical section connection first radiates arm joint.The utility model can realize smaller bore and broader bandwidth of operation, so as to be beneficial to realize coaxial Dual-frequency wide-band antenna array.
Description
Technical field
The utility model is related to the technical field of mobile communication, refers in particular to a kind of low frequency radiating element.
Background technology
Mobile Communication Industry experienced rapidly swift and violent development in the past few decades, from the 4G of the 1G of early stage till now,
It experienced from analog to digital communication, from arrowband to broadband connections, the fast development from low capacity to high power capacity.It is this
In the Consumer's Experience of broadband high-speed, antenna for base station has vital effect.Antenna is guided wave and free sky in transmission line
Between in electromagnetic wave converter, play the role of in mobile communications important.Environment is complicated and changeable in Modern Communication System, has very
Big disturbing factor, multipath fading can be overcome with Bipolarization antenna for base station, while increasing channel capacity.Modern mobile communication
System is
The second generation, the third generation, forth generation mobile communication coexist.This requires antenna for base station to realize broadband, multifrequency
Covering.Site space can not only be saved, while reducing cost.But, multiple mobile communication standards, which coexist, can bring different frequency range
The mutual coupling of antenna, this just proposes challenge to the miniaturization of low-and high-frequency antenna element.
In the prior art, the usual bore of low frequency radiation is larger, is realized using high frequency radiating element and low frequency radiating element
There are many difficulties during coaxial nested array antenna, or even the orthographic projection of low frequency radiating element can cover high frequency a period of time, this increases
The mutual coupling between low-and high-frequency radiating element is added.It has impact on the radiation characteristic of high frequency radiating element.So that the realization of array antenna is more
Plus it is difficult.
Prior art is investigated, it is specific as follows：
1. patent publication No.：US6333720B1, German Kathrein companies propose one kind and enclosed with four doublets
Low frequency a period of time of diamondwise structure realizes the nested multifrequency antenna array of low-and high-frequency, as shown below.This is nested for multifrequency
The design of antenna has a directive function, but be due to so do the size in low frequency a period of time can be than larger, so the modern times can not be met
The application request of GSM.
2. patent publication No.：CN 101425626A, patent name：Broadband annular dual polarized radiating element and linear array day
Line, patentee：Comba Telecom Systems (China) Co., Ltd..Patent a period of time bore is prototype, relative to rhombus bore,
There is certain miniaturization to a certain extent.
The content of the invention
The purpose of this utility model is to overcome existing low frequency radiating element bore big, so as to be difficult to be operated in 698-
The problem of 960MHz and 1710-2690MHz dual-band antenna array, there is provided a kind of small-bore low frequency radiating element, passes through
A period of time arm of traditional linear pattern doublet is internally bent into the square bore of realization, while using step grading structure
A period of time arm causes radiating element bore further to minimize.The small-bore low frequency radiating element can be used in 698-960MHz and
1710-2690MHz dual-band antenna array.
To achieve the above object, technical scheme provided by the utility model is：A kind of low frequency radiating element, including two pairs
The doublet of identical bending, the two pairs of symmetrical baluns of identical of base and installation on the base；Two pairs of symmetrical matrix
Son surrounds two a period of time in square bore, each pair doublet and two baluns in the symmetrical balun of each pair with square
The diagonal correspondence of bore, each a period of time includes two identical a period of time arms, and the angle of two a period of time arms is 90 °, often
Individual a period of time arm includes the first radiation arm joint and the second radiation arm joint, the first radiation arm joint of each a period of time arm and the second radiation arm joint
Conllinear connection, each a period of time arm uses step grading structure, wherein the first radiation arm joint is uniformly to become big grading structure, second
It is non-grading structure, i.e. homogeneous texture to radiate arm joint；Each a period of time arm has extended in vertical direction vertical plane, each a period of time
Metal semicolumn is protruded on the inside of the vertical plane of arm, for increasing surface current path, all a period of time arms constitute square and cut
The bore at angle, four angles are the top vertical sections of balun；Each balun includes two symmetrical arms, the arm of each balun side by side
It is made up of tilting section and top vertical section, tilting section is connected with base, and there is angle, top vertical section connection first is radiated
Arm joint, two top vertical sections of each balun are connected with the first radiation arm joint of two a period of time arms in an a period of time respectively
Connect, wherein in each balun top vertical section is provided with via, for being passed through for coaxial feeder cables, another top
Vertical section up protrudes metal column, for being connected by feed tab with coaxial feeder cables inner core.
The arm back side of each balun is the groove of arc-shaped, the cabling for fixing coaxial feed cable.
The base is the plinth or annular base at outer shroud corner cut inner ring supplementary angle.
The length sum of the first radiation arm joint and the second radiation arm joint is less than radiating element operating center frequency
0.18 times of wavelength.
The bore of the low frequency radiating element is less than 0.45 times of wavelength of its operating center frequency.
The top vertical section angle of the first radiation arm joint and adjacent balun is 135 °.
The utility model compared with prior art, has the following advantages that and beneficial effect：
1st, by the way that by linear pattern doublet arm 45-degree-buckling, fully rationally utilization space realizes the miniaturization of the first step.
2nd, the utility model makes full use of axial space so as to indirectly by using wide a period of time arm to vertical direction extension
Reduce a period of time bore.
3rd, being combined by using step grading structure a period of time arm and wide a period of time arm realizes the miniaturization of doublet, from
And furthermore achieved that the miniaturization in low frequency a period of time.
4th, it is metal semicolumn by increasing projection on a period of time arm, so as to increase current path, further realizes miniaturization.
5th, normal radiation unit bore is generally bigger than normal, in the design for multifrequency antenna array due to high frequency radiation list
The mutual coupling of member, can influence radiation characteristic.The utility model proposes low frequency radiating element realize smaller bore and more
Wide bandwidth of operation, so as to be beneficial to realize coaxial Dual-frequency wide-band antenna array.
Brief description of the drawings
Fig. 1 is the stereogram of the utility model low frequency radiating element in embodiment 1.
Fig. 2 is the top view of the utility model low frequency radiating element in embodiment 1.
Fig. 3 is operated in the voltage standing wave(VSW) of 670MHz-960MHz frequency ranges for the utility model low frequency radiating element in embodiment 1
Than VSWR simulation curve.
Fig. 4 imitates for the isolation that the utility model low frequency radiating element in embodiment 1 is operated in 670MHz-960MHz frequency ranges
True curve.
Fig. 5 is the top view in embodiment 2 by the utility model low frequency radiating element for designing dual-band antenna a period of time.
Fig. 6 is the stereogram of low frequency Bipolarization antenna for base station in embodiment 3.
Fig. 7 is the top view of low frequency Bipolarization antenna for base station in embodiment 3.
Embodiment
The utility model is described further with reference to specific embodiment.
Embodiment 1
The utility model realize be a period of time upper-arm circumference into square bore a period of time, a period of time bore mainly by a period of time arm
Length is determined.Our purposes are to reduce a period of time bore, that is to say, that realize that a period of time arm is realized in the case where working frequency range is constant
Miniaturization, what is expected first is exactly wide a period of time arm, is secondly exactly a period of time arm using step grading structure, is exactly by a period of time again
Arm extends to vertical direction, will not so increase a period of time bore, and can realize miniaturization, while also bore is empty inside increase a period of time
Between.Increase raised or groove to increase current path on a period of time arm surface in addition, further realize miniaturization.
As shown in figure 1, the low frequency radiating element that the present embodiment is provided, include the doublet, outer of two pairs of identicals bending
The plinth 4 at ring cutting angle inner ring supplementary angle and two pairs of identical baluns on the plinth 4；Two pairs of doublets enclose
Into square bore, two a period of time in each pair doublet and two baluns in the symmetrical balun of each pair are with square bore
Diagonal correspondence, each a period of time includes two identical a period of time arms, and the angle of two a period of time arms is 90 °, Mei Gezhen
Sub- arm includes the first radiation radiation arm joint 22 of arm joint 21 and second.The first radiation radiation arm of arm joint 21 and second of each a period of time arm
The collinearly connection of section 22.Each a period of time arm uses step grading structure, wherein the first radiation arm joint 21 is uniformly to become big graded junction
Structure, the second radiation arm joint 22 is non-grading structure, i.e. homogeneous texture；Each a period of time arm has been extended in vertical direction vertically
Metal semicolumn 23 is protruded on the inside of face, the vertical plane of each a period of time arm, for increasing surface current path, all a period of time arms
The bore of square corner cut is constituted, four angles are the top vertical sections 1 of balun.Each balun includes two symmetrical arms side by side,
The arm of each balun is made up of the vertical section 1 on tilting section 3 and top, and tilting section 3 is connected with plinth 4, and there is folder
Angle, the connection of top vertical section 1 first radiates arm joint 21, two top vertical sections 1 of each balun respectively with an a period of time
First radiation arm joint 21 of two a period of time arms is connected, i.e., one top vertical section 1 connects the first radiation arm of a period of time arm
Section 21, the angle of the first radiation arm joint 21 and top vertical section 1 is 135 °, wherein a top vertical section 1 in each balun
Via 6 is provided with, for being passed through for coaxial feeder cables, another top vertical section 1 up protrudes small metal column 5, is used for
It is connected by feed tab with coaxial feeder cables inner core.The arm back side of each balun is formed with the groove 2 of arc-shaped, for fixing
Feeding coaxial lines cable cabling.The tilting section 3 of the balun used in the present embodiment is linear, it is of course also possible to be circular arc
Shape or the linear of stage gradual change.The base 4 of the present embodiment is the square ring-type that peripheral corner cut inside casing is handed in retroactively, also may be used certainly
To select annular base.
As shown in Fig. 2 corresponding a pair of the doublets 10 and 12 of square bore diagonal are like-polarized, -45 ° are realized
Polarization, the two doublets are fed by the coaxial power splitter of one-to-two.Another pair doublet 11 and 13 be it is like-polarized,
+ 45 ° of polarization are realized, the two doublets are fed by the coaxial power splitter of another one-to-two, and coaxial line passes through the balun back side
The cabling of groove 2 fed through the via 6 of top vertical section 1 of balun.First radiation arm joint 21 and second of each a period of time arm
The length sum for radiating arm joint 22 is less than 0.18 times of wavelength of the operating center frequency of low frequency radiating element 9,9 mouthfuls of low frequency radiating element
Footpath is less than 0.45 times of wavelength of its operating center frequency, helps to overcome 698-960MHz and 1710-2690MHz dual-band antennas
Design challenges.The first radiation radiation of arm joint 21 and second structure of arm joint 22 is not only limited to this or multistage stepped uniform
Or the structure that non-homogeneous grading structure and nonlinear type a period of time arm be combined with each other.
Fig. 3 is the voltage standing wave ratio VSWR emulation that the present embodiment low frequency radiating element is operated in 670MHz-960MHz frequency ranges
Curve, two polarization port VSWR in working band<1.5.Fig. 4 is that the present embodiment low frequency radiating element is operated in 670MHz-
The isolation simulation curve of 960MHz frequency ranges, it can be seen that be more than 29dB with interior isolation.
Embodiment 2
As shown in figure 5, be the basic dual-band antenna array structure design of the present embodiment, including two are operated in 698-
960MHz low frequency radiating element (using the low frequency radiating element structure of embodiment 1) and four working frequency range 1710-2690MHz
High frequency radiating element 7 and reflecting plate 8.
Embodiment 3
As shown in Figure 6 and Figure 7, the main feature of the Bipolarization antenna for base station of the present embodiment has：The small-bore, and of a period of time arm 14
Balun, which is connected, tilts down extension, and remaining is same as Example 1.It is of course also possible to use long and short a period of time arm of segmentation.
Embodiment described above is only the preferred embodiment of the utility model, not limits implementation of the present utility model with this
Scope, therefore the change that all shape, principles according to the utility model are made, all should cover in protection domain of the present utility model.
Claims (6)
1. a kind of low frequency radiating element, it is characterised in that：Doublet, base including the bending of two pairs of identicals and installed in this
Two pairs of symmetrical baluns of identical on base；Two pairs of doublets surround two in square bore, each pair doublet
Two baluns in individual a period of time and the symmetrical balun of each pair are with the diagonal correspondence of square bore, and each a period of time includes two
Identical a period of time arm, and the angle of two a period of time arms is 90 °, each a period of time arm includes the first radiation arm joint and the second radiation arm
Section, the first radiation arm joint of each a period of time arm and the second radiation arm joint are collinearly connected, and each a period of time arm uses step grading structure,
Wherein first radiation arm joint is uniformly becomes big grading structure, and the second radiation arm joint is non-grading structure, i.e. homogeneous texture；Each
A period of time arm has extended in vertical direction and has protruded metal semicolumn on the inside of vertical plane, the vertical plane of each a period of time arm, uses
In increase surface current path, all a period of time arms constitute the bore of square corner cut, and four angles are the top vertical sections of balun；Often
Individual balun includes two symmetrical arms side by side, and the arm of each balun is made up of tilting section and top vertical section, tilting section with
Base is connected, and there is angle, and top vertical section connection first radiates arm joint, two top vertical sections of each balun respectively with
First radiation arm joint of two a period of time arms in one a period of time is connected, wherein in each balun top vertical section is set
There is via, for being passed through for coaxial feeder cables, another top vertical section up protrudes metal column, for passing through feed tab
It is connected with coaxial feeder cables inner core.
2. a kind of low frequency radiating element according to claim 1, it is characterised in that：The arm back side of each balun is arc-shaped
Groove, the cabling for fixing coaxial feed cable.
3. a kind of low frequency radiating element according to claim 1, it is characterised in that：The base is mended for outer shroud corner cut inner ring
The plinth or annular base at angle.
4. a kind of low frequency radiating element according to claim 1, it is characterised in that：The first radiation arm joint and the second spoke
The length sum for penetrating arm joint is less than 0.18 times of wavelength of radiating element operating center frequency.
5. a kind of low frequency radiating element according to claim 1, it is characterised in that：The bore of the low frequency radiating element is small
In 0.45 times of wavelength of its operating center frequency.
6. a kind of low frequency radiating element according to claim 1, it is characterised in that：The first radiation arm joint and adjacent bar
The top vertical section angle of human relations is 135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621382355.2U CN206422220U (en) | 2016-12-16 | 2016-12-16 | A kind of low frequency radiating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621382355.2U CN206422220U (en) | 2016-12-16 | 2016-12-16 | A kind of low frequency radiating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206422220U true CN206422220U (en) | 2017-08-18 |
Family
ID=59576911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621382355.2U Expired - Fee Related CN206422220U (en) | 2016-12-16 | 2016-12-16 | A kind of low frequency radiating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206422220U (en) |
-
2016
- 2016-12-16 CN CN201621382355.2U patent/CN206422220U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20201216 |