CN106170889B - Antenna and fan antenna - Google Patents
Antenna and fan antenna Download PDFInfo
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- CN106170889B CN106170889B CN201580017952.7A CN201580017952A CN106170889B CN 106170889 B CN106170889 B CN 106170889B CN 201580017952 A CN201580017952 A CN 201580017952A CN 106170889 B CN106170889 B CN 106170889B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Antenna with wide band frequency characteristic, that cross-dipole construction can be suitable for, wherein: components department 210 is as shown in components department 210-2b, it is edge for linear straight line portion 211,212 and curve part 213 is connected and composition, the outer edge of (connection) part that straight line portion 211 is connected with curve part 213 is radius of curvature R.It is in components department 210 that straight line portion 211 and the part being connected of straight line portion 212 is opposite with center O, and components department 210-2b and components department 210-2a are configured to symmetrical relative to center O and constitute antenna element, receive and dispatch predetermined polarized wave.
Description
Technical field
The present invention relates to antenna and fan antennas.
Background technique
In the antenna for base station of mobile communication, by multiple to each sector corresponding with the radiation direction of electric wave and setting
The fan antenna of (region) radiation electric wave is combined and is used.In fan antenna, using by the emissive elements (antenna such as dipole antenna
Element) it is listed as array antenna made of array-like.
A kind of antenna is described in patent document 1, has at least one dipole or antenna same as dipole
Element, antenna element and its base portion are maintained as not contacting with reflecting plate or substrate direct current, antenna element and its pedestal
Portion's contact or set region are configured to do not have electric conductivity at least.
Existing technical literature
Patent document
Patent document 1: No. 2004/0201537 specification of U.S. Patent Application Publication No.
Summary of the invention
Problems to be solved by the invention
It is to use energy in array antenna but for raising/message capacity increase of the communication quality of fan antenna
Enough carry out the antenna of the cross-dipole construction of the transmitting-receiving of orthogonally polarized wave.Moreover, in order to be used in multiple frequent bands, it is desirable that
Relative bandwidth is wider.
The purpose of the present invention is to provide it is with wide band frequency characteristic, can be suitable for cross-dipole construction
Antenna etc..
The means used to solve the problem
Based on the purpose, it is applicable in antenna of the invention, in which: there is a set of pieces portion, this set of pieces portion is respectively
Outer edge is that one group of linear straight line portion is connected with interconnecting piece and is constituted；One set of pieces portion is configured to receive and dispatch predetermined
The antenna element of polarized wave, each components department, which is configured at, makes straight line portion phase each other relative to the position of predetermined point symmetry
Part even it is opposite to；It, will be free in the case where return loss is set as 35% or more as -14dB relative bandwidth below
The wavelength in space is set as λ0, the outer peripheral radius of curvature R of the part that straight line portion is connected with interconnecting piece in components department meets
0.003λ0≤R≤0.076λ0。
In addition, being applicable in antenna of the invention, in which: there is a set of pieces portion, this set of pieces portion is outer edge respectively
It is connected with interconnecting piece for one group of linear straight line portion and constitutes；One set of pieces portion is configured to receive and dispatch predetermined polarized wave
Antenna element, each components department is configured at the portion for relative to the position of predetermined point symmetry straight line portion being connected with each other
Split-phase is opposite；In the case where return loss is set as 40% or more as -14dB relative bandwidth below, by free space
Wavelength is set as λ0, the outer peripheral radius of curvature R of the part that straight line portion is connected with interconnecting piece in components department meets 0.028 λ0
≤R≤0.070λ0。
Further, antenna of the invention it has been applicable in, in which: there is a set of pieces portion, this set of pieces portion is outside respectively
Edge is that one group of linear straight line portion is connected with interconnecting piece and is constituted；One set of pieces portion is configured to receive and dispatch predetermined polarization
The antenna element of wave, each components department is configured at makes straight line portion be connected with each other relative to the position of predetermined point symmetry
Part it is opposite to；In the case where return loss is set as 45% or more as -14dB relative bandwidth below, by free space
Wavelength be set as λ0, the outer peripheral radius of curvature R of the part that straight line portion is connected with interconnecting piece in components department meets 0.044
λ0≤R≤0.067λ0。
It, can also be in these antenna: there is another set of pieces portion, it is linear that this another set of pieces portion, which is outer edge respectively,
One group of straight line portion be connected with interconnecting piece and constitute；It is also equipped with another antenna element, this another antenna element is another constituent element
The opposite position being configured in a manner of relative to the point symmetry in part that each components department in part portion is connected with each other by straight line portion
It sets and receives and dispatches the polarized wave orthogonal with the polarized wave and constitute.
By being set as in such manner, it is possible to the antenna that the polarized wave for becoming cross-dipole construction shares.
Moreover, one group of straight line portion in a set of pieces portion is beaten with one group of the outer peripheral of straight line portion in another set of pieces portion
Angle of release is 90 ° or less.
By being set as in such manner, it is possible in one plane configure the 1st antenna element and the 2nd antenna element.
In addition, feature can be: a set of pieces portion and another set of pieces portion are connect and each components department with one end
Two groups of column portions and the base portion that is connected of the other end in two groups of column portions be integrally constituted.
By being set as in such manner, it is possible to keep the quantity of component less, and can ensure precision.
If understood from other viewpoints, be applicable in fan antenna of the invention and had: be arranged with it is multiple it is above-mentioned made of
Array antenna；With the antenna house of storage array antenna.
According to this constitution, the fan antenna that shared with the polarized wave of wide band frequency characteristic can be configured to smaller
Type.
The effect of invention
In accordance with the invention it is possible to provide it is with wide band frequency characteristic, can be suitable for cross-dipole construction
Antenna etc..
Detailed description of the invention
Fig. 1 is the figure for showing all an examples constituted of antenna for base station for the mobile communication for being applicable in the 1st embodiment.
(a) be antenna for base station perspective view, (b) be figure that the setting example to antenna for base station is illustrated.
Fig. 2 is the figure for showing an example of composition of the array antenna in the 1st embodiment.
Fig. 3 is the perspective view for showing a part of the array antenna in the 1st embodiment.
Fig. 4 is the main view and cross-sectional view of the part of an antenna in array antenna.(a) it is main view, is (b)
(a) the cross-sectional view on IVB-IVB line.
Fig. 5 is the figure for showing an example of return loss of the antenna element in array antenna.
Fig. 6 is shown in the return loss and antenna element of 1 antenna element about the antenna element in array antenna
The two-dimensional map of the relationship of the radius of curvature R of components department.
Fig. 7 be shown about the antenna element in array antenna 1 antenna element return loss be -14dB phase below
To the figure of the relationship of the radius of curvature R of the components department in bandwidth and antenna element.
Fig. 8 is the figure for showing an example of radial pattern of the antenna element in array antenna.
Fig. 9 is the top view of the antenna of the 2nd embodiment.
Figure 10 is the top view of the antenna of the 3rd embodiment.
Specific embodiment
Hereinafter, referring to attached drawing, detailed description of embodiments of the present invention.
[the 1st embodiment]
1 > of < antenna for base station
Fig. 1 is the figure for showing all an examples constituted of antenna for base station 1 for the mobile communication for being applicable in the 1st embodiment.
Fig. 1 (a) is the perspective view of antenna for base station 1, and Fig. 1 (b) is the figure being illustrated to the setting example of antenna for base station 1.
As shown in Fig. 1 (a), antenna for base station 1 for example has the multiple fan antenna 10-1~10-3 for being held in steel tower 20
(in indiscriminative situation, table is denoted as fan antenna 10).Fan antenna 10-1~10-3 has array antenna 11 respectively.And
And array antenna 11 is covered by the antenna house (radome) 12 for protecteding from the infringements such as wind and rain.That is, fan antenna 10-1
The outside of~10-3 is antenna house 12, is accommodated with array antenna 11 in the inside of antenna house 12.Herein, antenna house 12 is set as round
Tubular is but it is also possible to be other shapes.The transmitting-receiving of electric wave is carried out in the unit 2 shown in Fig. 1 (b) of antenna for base station 1.
In addition, as shown in Fig. 1 (a), relative to the array antenna 11 (referring to aftermentioned Fig. 2) in fan antenna 10-1, if
Determine xyz coordinate.
As shown in Fig. 1 (b), antenna for base station 1 carries out the transmitting-receiving of electric wave in unit 2.Unit 2 and fan antenna 10-1~
10-3 is corresponding and is divided into multiple sector 3-1~3-3 (in indiscriminative situation, table is denoted as sector 3).Moreover, sector
Antenna 10-1~10-3 is set as, and the direction of the main lobe 13 for the electric wave that respective array antenna 11 is received and dispatched is towards corresponding sector 3-
1~3-3.
In addition, in Fig. 1, antenna for base station 1 is set as having 3 fan antenna 10-1~10-3 and corresponding with them
Sector 3-1~3-3.But fan antenna 10 and sector 3 are also possible to the predetermined number other than 3.In addition, in Fig. 1
(b) in, sector 3 is to constitute 2 trisection Ground Split of unit (120 ° of central angle), and however, you can also not equal parts, can also be incited somebody to action
Any 1 sector 3 is configured to wider than other sectors 3 or narrow.
Each fan antenna 10 is connected to array antenna 11 and transmits the transmitting-receiving cable 14- for sending signal and receiving signal
1,14-2.In addition, the transmission signal of transmitting-receiving cable 14-1,14-2 transmission so must you orthogonal polarized wave and receiving signal.
Transmitting-receiving cable 14-1,14-2 are connected to the generation being arranged in base station (not shown) and send signal and receive
The receiving and transmitting part (not shown) of signal.Receiving and dispatching cable 14-1,14-2 is, for example, coaxial cable.
In addition, antenna for base station 1, fan antenna 10, array antenna 11 etc., since the invertibity of antenna can send and connect
Receive electric wave.
Fan antenna 10 can also have the mutiple antennas (antenna of aftermentioned Fig. 2 for having in array antenna 11
100-1,100-2,100-3) between keep the phase of receiving and transmitting signal different phase shifter.By the phase for making receiving and transmitting signal between antenna
Difference can make the rotation angle of electric wave (beam) tilt (tilt) to ground direction.
11 > of < array antenna
Fig. 2 is the figure for indicating an example of composition of the array antenna 11 in the 1st embodiment.Fig. 2 is array antenna 11
Main view (figure on the face x-y).
Array antenna 11 has: the antenna 100-1 of multiple (being 3 herein as an example) cross-dipole constructions~
100-3 (in indiscriminative situation, table is denoted as antenna 100)；With the reflecting plate 300 for being arranged with antenna 100-1~100-3.
Antenna 100-1 by be respectively equipped with opening (hole) fan type components department 210-1a, 210-1b, 210-2a, 210-2b
(in indiscriminative situation, table is denoted as components department 210) is constituted.Herein, it is made of components department 210-1a, 210-1b as idol
The antenna element 200-1 of pole sub-antenna constitutes the antenna as dipole antenna by components department 210-2a and components department 210-2b
Element 200-2.That is, antenna 100-1 is configured to 2 antenna element 200-1,200-2 as dipole antenna (indiscriminative
In the case of, table is denoted as antenna element 200) intersect (orthogonal) cross-dipole construction.
The antenna element 200-1 of antenna 100-1 is configured to receive and dispatch in the x-y plane in Fig. 2 to incline relative to y-axis
Tiltedly -45 ° of polarized wave, antenna element 200-2 are configured to receive and dispatch the polarized wave for tilting 45 ° relative to y-axis.That is, antenna 100
The polarized wave of ± 45 ° of transmitting-receiving.
In addition, in the case where transmitting-receiving is along the polarized wave of x-axis and y-axis, make during antenna element 200-1,200-2 surround
Heart O rotates 45 °.
Other antenna 100-2,100-3 are also the same.
In addition, array antenna 11 shown in Fig. 2 has 3 antennas 100, but can also have the number other than 3.
Moreover, antenna 100 has antenna element 200-1 and antenna element in the case where not receiving and dispatching orthogonally polarized wave
Either in 200-2.
Fig. 3 is the perspective view for showing a part of the array antenna 11 in the 1st embodiment.In addition, in figure 3 it is shown that
An antenna 100 in array antenna 11 shown in Fig. 2.
Array antenna 11 has column portion 220-1a, 220-1b, 220-2a, 220-2b between antenna 100 and reflecting plate 300
(in indiscriminative situation, table is denoted as column portion 220), base portion 230.It is further equipped with to components department 210-1a and components department
The power supply board 240-1 of the 210-1b power supply and power supply board 240-2 to power to components department 210-2a and components department 210-2b.
In addition, column portion 220-2a is located at the back side of array antenna 11, so not shown in Fig. 3.
As an example, column portion 220-1a, 220-1b, 220-2a, 220-2b is formed as, with components department 210-1a, 210-1b,
Composition made of slot separates cylinder is correspondingly arranged in 210-2a, 210-2b.Column portion 220-1a, 220-1b, 220-2a,
The respective one end of 220-2b is connected to components department 210-1a, 210-1b, 210-2a, 210-2b.
Base portion 230 be it is disk-shaped, be connected with column portion 220-1a, 220-1b, 220- in the face of a side of base portion 230
Respective the other end of 2a, 220-2b.Moreover, reflecting plate 300 is fixed in the face of another party of base portion 230.In addition, about
Column portion 220 and the connection of base portion 230 are aftermentioned.
Herein, as shown in figure 3, components department 210-1a, 210-1b, 210-2a, 210-2b, column portion 220-1a, 220-1b,
220-2a, 220-2b, base portion 230, it is integrally formed by molding etc. by conductive metals such as aluminium, copper, and direct current connects.
In addition, components department 210-1a, 210-1b, 210-2a, 210-2b, column portion 220-1a, 220-1b, 220-2a, 220-
2b, base portion 230 can also be individually constructed respectively, be assembled by screw element etc..Alternatively, it is also possible to by column portion 220-1a,
220-1b, 220-2a, 220-2b and base portion 230 are integrally formed, and pass through screw element etc. and the components department 210- that separately constitutes
1a, 210-1b, 210-2a, 210-2b are assembled.Further, can also by components department 210-1a, 210-1b, 210-2a,
210-2b is integrally formed with column portion 220-1a, 220-1b, 220-2a, 220-2b, passes through screw element etc. and the pedestal that separately constitutes
Portion 230 assembles.
Fig. 4 is the main view and cross-sectional view of 100 part of antenna in array antenna 11.Fig. 4 (a) is main view,
Fig. 4 (b) is the cross-sectional view on the IVB-IVB line of Fig. 4 (a).In addition, 1 antenna 100 is shown in Fig. 4 (a), (b), in Fig. 4
(a) the table note of reflecting plate 300 is omitted in.
As shown in Fig. 4 (a), (b), components department 210 is that plan view shape is fan-shaped and has the portion of the plate of opening in inside
Part.Moreover, as shown in the components department 210-2b of Fig. 4 (a), components department 210 is by edge be linear straight line portion 211,212 with
And the curve part 213 of an example as interconnecting piece is connected (connection) and constitutes, by straight line portion 211,212 and curve part 213
The outer edge of connected part is equipped with radius of curvature R.That is, the respective one end of straight line portion 211 and straight line portion 212 phase each other
Even, and the other end is connected with curve part 213.
Components department 210-2b, the part adjacent with components department 210-1a is linear straight line portion 211, with components department 210-
1b adjacent part is linear straight line portion 212.
Other components department 210-2a, 210-1a, 210-1b are similarly constituted.
Moreover, configure components department 210-1a and components department 210-1b to it is symmetrical relative to center O, by components department 210-2a
Be configured to components department 210-2b it is symmetrical relative to center O so that the straight line portion 211 in components department 210 is connected with straight line portion 212
Part it is opposite with center O.
As shown in Fig. 4 (b), column portion 220-2a, 220-2b are disposed through base portion 230.Moreover, having penetrated through column portion 220-
The part of the base portion 230 of 2a, 220-2b further penetrates through reflecting plate 300 and prominent to the back side of reflecting plate 300.
Moreover, column portion 220-2b be it is hollow, be set as not connecing with column portion 220-2b in hollow part power supply board 240-2
Touching.In addition, can also be filled out by small polytetrafluoroethylene (PTFE) etc. is lost in high-frequency region between power supply board 240-2 and column portion 220-2b
It fills.
220-1a, 220-1b also become same composition in column portion.Moreover, column portion 220-1b be it is hollow, in hollow portion
It is arranged with power supply board 240-1.
Power supply board 240-1,240-2 are, for example, the conductive metal plate for being bent into L-shaped.Moreover, power supply board 240-2,
Curved front end is connected to components department 210-2a via column portion 220-2a, and the other end of power supply board 240-2 is to reflecting plate 300
The back side is prominent and is connected to power supply circuit.
In addition, power supply board 240-1 is also equally constituted with power supply board 240-2, but it is set as being misplaced in a z-direction so that with confession
The part that battery plate 240-2 intersects does not contact.
As shown in Fig. 4 (a), in components department 210, the vertical view of straight line portion 211 and the part of curve part 213 connected (connection)
Outer edge in shape is radius of curvature R.The outer edge of straight line portion 211 and the outer edge of straight line portion 212 are opening angle A.Straight line
Outer edge in the plan view shape for the part that portion 212 is connected with curve part 213 is also radius of curvature R.It is (straight along straight line portion 211
Line portion 212) length be length L.Moreover, curve part 213 is width T.Further, as shown in Fig. 4 (b), components department 210 is thickness
Spend W.Further, reflecting plate 300 arrives components department 210, is height H.
These components, such as the central wavelength lambda relative to free space0(centre frequency f0), opening angle A is 90 °, curvature
Radius R is 0.06 λ0, the width T of curve part 213 is 0.02 λ0, the length L along straight line portion 211 (straight line portion 212) is 0.2 λ0,
The thickness W of components department 210 is 0.02 λ0, it is 0.25 λ from reflecting plate 300 to the height H of components department 2100。
As a result, compared with the case where using linear components department, the size of antenna element 200 can be reduced.
Fig. 5 is the figure for showing an example of return loss of the antenna element 200 in array antenna 11.Herein, showing makes
With the return loss of this 1 element of the antenna element 200 of components department 210 of above-mentioned numerical value.The horizontal axis of Fig. 5 is by center frequency
Rate f0Frequency after standardization, the longitudinal axis are return loss (dB).
Return loss is in centre frequency f in frequency0Minimum when nearby, frequency is than centre frequency f0Echo damages when low or high
Consumption all becomes larger.
Fig. 6 be about in array antenna 11 antenna element 200, the return loss and antenna element 200 of 1 element are shown
In components department 210 radius of curvature R relationship two-dimensional map.The horizontal axis of Fig. 6 is to pass through central wavelength lambda0After standardization
The radius of curvature R of components department 210, the longitudinal axis are to pass through centre frequency f0Return loss is divided into 7 ranges by the frequency after standardization
It is indicated by shade.
Such as can be seen from Figure 6, for example, if being 0.028 λ by radius of curvature R0With 0.055 λ0Be compared, then echo damage
Consumption is -15dB frequency range below, is 0.055 λ in radius of curvature R0When be 0.83f0~1.35f0, it is in radius of curvature R
0.028λ0When be 0.83f0~1.23f0.That is, the small frequency range of return loss broadens if increasing radius of curvature R.Echo
Loss changes according to the radius of curvature R of components department 210.
Moreover, it is found that return loss, in frequency with 0.89f0Centered on and radius of curvature R with 0.044 λ0Centered on area
Domain and frequency are with 1.14f0Centered on and radius of curvature R with 0.03 λ0Centered on region it is small.The small frequency of return loss as a result,
Rate range becomes W font.
Fig. 7 be about in array antenna 11 antenna element 200, show 1 element return loss be -14dB it is below
The figure of the relationship of the radius of curvature R of components department 210 in relative bandwidth and antenna element 200.The horizontal axis of Fig. 7 is by middle cardiac wave
Long λ0The radius of curvature R of components department 210 after standardization, the longitudinal axis are relative bandwidths.In addition, relative bandwidth is by percentage table
Show that return loss is the frequency resulting value of -14dB frequent band below divided by the center (center) of the frequent band.In addition, echo
Loss is that -14dB or less is that the constant band Bobbi (VSWR) of voltage is corresponding with the range of VSWR≤1.5.
As shown in fig. 7, for relative bandwidth is set as 35% or more, as long as the radius of curvature R of components department 210 is set as
0.003λ0≤R≤0.076λ0?.In addition, for relative bandwidth is set as 40% or more, as long as by the curvature of components department 210 half
Diameter R is set as 0.028 λ0≤R≤0.070λ0?.Further, for relative bandwidth is set as 45% or more, as long as by components department
210 radius of curvature R is set as 0.044 λ0≤R≤0.067λ0?.
That is, passing through the vertical view shape for the part that the straight line portion 211 (straight line portion 212) of components department 210 is connected with curve part 213
Outer peripheral shape in shape is set as (radius of curvature R) of curvature and on-right angle, can widen the small bandwidth of return loss
It spends (broadband).Moreover, the straight line portion 211 (straight line portion 212) that relative bandwidth depends on components department 210 is connected with curve part 213
Part plan view shape in outer peripheral radius of curvature R.
In addition, if the vertical view for the part that the straight line portion 211 (straight line portion 212) of components department 210 is connected with curve part 213
Outer edge in shape is set as right angle nearby (less than 0.003 λ0), then relative bandwidth becomes smaller than 35%.
More than, the opening angle A between the outer edge of the straight line portion 211 of components department 210 and the outer edge of straight line portion 212 is set
It is 90 °, is 0.06 λ in radius of curvature R even if opening angle A is 80 °, 85 °, 100 °0When neighbouring, return loss also becomes most
It is small.In addition, opening angle A is excellent in the case where combining antenna element 200-1 with-thread elements 200-2 and be set as polarized wave and share
It is selected as 90 ° or less.
In addition, the width T of the curve part 213 of components department 210 is set as 0.02 λ0, even if width T is 0.01 λ0、0.03
λ0, it is 0.06 λ in radius of curvature R0When neighbouring, return loss also becomes minimum.
Moreover, the length L along straight line portion 211 (straight line portion 212) of components department 210 is set as 0.2 λ0, even if length
L is 0.18 λ0、0.22λ0, it is 0.06 λ in radius of curvature R0When neighbouring, return loss also becomes minimum.
Further, the thickness W of components department 210 is set as 0.02 λ0, even if thickness W is 0.01 λ0、0.03λ0, in curvature
Radius R is 0.06 λ0When neighbouring, return loss also becomes minimum.
Fig. 8 is the figure for showing an example of radial pattern of the antenna element 200 in array antenna 11.With it is shown in Fig. 2 same
Sample, array antenna 11 have 3 antennas 100.Moreover, Fig. 8 shows the centre frequency f in the face x-z0When radial pattern.Electric wave
(beam) width is 68 °.
[the 2nd embodiment]
In the 1st embodiment, the plan view shape of the components department 210 in the antenna element 200 of antenna 100 is sector.?
In 2nd embodiment, the plan view shape of components department 210 is set as triangle.Others are constituted in a same manner as in the first embodiment, institute
Will illustrate to omit.
Fig. 9 is the top view of the antenna 100 of the 2nd embodiment.
In antenna 100, the components department 210 of antenna element 200 is straight line portion 211, straight line portion 212, as interconnecting piece
The straight line portion 214 of an example is connected and constitutes.But the straight line portion 211 (straight line portion 212) of components department 210 and 214 phase of straight line portion
Outer edge in the plan view shape of part even, it is same as the components department 210 of the 1st embodiment, become radius of curvature R.
Therefore, in the array antenna 11 of the 2nd embodiment, return loss also depends on radius of curvature R.Moreover, with the 1st
Embodiment is same, by selecting radius of curvature R, can widen the small frequency bandwidth of return loss (being set as broadband).
[the 3rd embodiment]
In the 1st embodiment, the plan view shape of the components department 210 in the antenna element 200 of antenna 100 is sector.?
In 3rd embodiment, the plan view shape of components department 210 is set as quadrangle.Others are constituted in a same manner as in the first embodiment, institute
Will illustrate to omit.
Figure 10 is the top view of the antenna 100 of the 3rd embodiment.
In antenna 100, the components department 210 of antenna element 200 be straight line portion 211, straight line portion 212, straight line portion 215 and
Straight line portion 216 be connected and constitute.But the vertical view shape of part that the straight line portion 211 of components department 210 is connected with straight line portion 215
Outer edge in the plan view shape for the part that outer edge and straight line portion 212 in shape are connected with straight line portion 216 is implemented with the 1st
The components department 210 of mode is same, becomes radius of curvature R.
Therefore, in the array antenna 11 of the 3rd embodiment, return loss also depends on radius of curvature R.Moreover, with the 1st
Embodiment is same, by selecting radius of curvature R, can widen the small frequency bandwidth of return loss (being set as broadband).
In addition, the outer edge in the plan view shape for the part that straight line portion 215 is connected with straight line portion 216, is also possible to than song
Rate radius R small radius of curvature.
In the 1st embodiment into the 3rd embodiment, the components department 210 of antenna element 200 is set as having opening (hole),
However, you can also not have opening (hole).In this case, it is straight line that straight line portion 211,212,214,215,216, which renames as edge,
Linearity region 211,212,214,215,216, curve part 213 rename as the curve regions 213 that edge is curve.
In the 1st embodiment into the 3rd embodiment, antenna element 200 does not have unpowered element, but can also be remote
Side from reflecting plate 300 has unpowered element.
Further, in the 1st embodiment into the 3rd embodiment, as shown in Fig. 2 of the 1st embodiment, in reflecting plate
3 antennas 100 arranged side by side, in the x direction 1 antenna 100 arranged side by side in y-direction on 300, but can also be more side by side in the x direction
A antenna 100.
Alternatively, it is also possible to mix the antenna of other frequency bands.
Description of symbols
1 ... antenna for base station, Unit 2 ..., 3, the sector 3-1~3-3 ..., 10,10-1~10-3 ... fan antenna, 11 ... arrays
Antenna, 12 ... antenna houses, 13 ... main lobes, 14-1,14-2 ... transmitting-receiving cable, 20 ... steel towers, 100,100-1~100-3 ... antenna,
200,200-1,200-2 ... antenna element, 210,210-1a, 210-1b, 210-2a, 210-2b ... components department, 211,212,
214,215,216 ... straight line portion, 213 ... curve parts, 220,220-1a, 220-1b, 220-2a, 220-2b ... column portion, 230 ... bottoms
Portions, 240-1,240-2 ... power supply board, 300 ... reflecting plates.
Claims (7)
1. a kind of antenna, it is characterised in that:
With a set of pieces portion, set of pieces portion is that outer edge is that one group of linear straight line portion is connected with interconnecting piece respectively
And constitute；
One set of pieces portion is configured to receive and dispatch the antenna element of predetermined polarized wave, and each components department is configured at phase
The part for the straight line portion being connected with each other the position of predetermined point symmetry it is opposite to；
In the case where return loss is set as 35% or more as -14dB relative bandwidth below, by the wavelength of free space
It is set as λ0, the outer peripheral radius of curvature R of the part that the straight line portion is connected with the interconnecting piece in the components department expires
0.003 λ of foot0≤R≤0.076λ0。
2. a kind of antenna, it is characterised in that:
With a set of pieces portion, set of pieces portion is that outer edge is that one group of linear straight line portion is connected with interconnecting piece respectively
And constitute；
One set of pieces portion is configured to receive and dispatch the antenna element of predetermined polarized wave, and each components department is configured at phase
The part for the straight line portion being connected with each other the position of predetermined point symmetry it is opposite to；
In the case where return loss is set as 40% or more as -14dB relative bandwidth below, by the wavelength of free space
It is set as λ0, the outer peripheral radius of curvature R of the part that the straight line portion is connected with the interconnecting piece in the components department expires
0.028 λ of foot0≤R≤0.070λ0。
3. a kind of antenna, it is characterised in that:
With a set of pieces portion, set of pieces portion is that outer edge is that one group of linear straight line portion is connected with interconnecting piece respectively
And constitute；
One set of pieces portion is configured to receive and dispatch the antenna element of predetermined polarized wave, and each components department is configured at phase
The part for the straight line portion being connected with each other the position of predetermined point symmetry it is opposite to；
In the case where return loss is set as 45% or more as -14dB relative bandwidth below, by the wavelength of free space
It is set as λ0, the outer peripheral radius of curvature R of the part that the straight line portion is connected with the interconnecting piece in the components department expires
0.044 λ of foot0≤R≤0.067λ0。
4. antenna according to any one of claim 1 to 3, it is characterised in that:
With another set of pieces portion, another set of pieces portion is that outer edge is linear one group of straight line portion and interconnecting piece respectively
It is connected and composition；
It is also equipped with another antenna element, which is each components department in another set of pieces portion with described
Part that straight line portion is connected with each other it is opposite to mode be configured at the position relative to the point symmetry and receive and dispatch and the polarization
The orthogonal polarized wave of wave and constitute.
5. antenna according to claim 4, it is characterised in that:
One group of the outer peripheral of straight line portion in one group of straight line portion and another set of pieces portion in one set of pieces portion beats
Angle of release is 90 ° or less.
6. antenna according to claim 4, it is characterised in that:
One set of pieces portion and another set of pieces portion, with one end be connected to each components department two groups of column portions and this
The base portion that the other end in two groups of column portions is connected is integrally constituted.
7. a kind of fan antenna, has:
It is arranged with array antenna made of multiple antennas described in any one of claims 1 to 6；With
Store the antenna house of the array antenna.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-086892 | 2014-04-18 | ||
| JP2014086892 | 2014-04-18 | ||
| PCT/JP2015/061418 WO2015159871A1 (en) | 2014-04-18 | 2015-04-14 | Antenna and sector antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106170889A CN106170889A (en) | 2016-11-30 |
| CN106170889B true CN106170889B (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580017952.7A Active CN106170889B (en) | 2014-04-18 | 2015-04-14 | Antenna and fan antenna |
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| Country | Link |
|---|---|
| CN (1) | CN106170889B (en) |
| WO (1) | WO2015159871A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020060536A1 (en) * | 2018-09-18 | 2020-03-26 | Massachusetts Institute Of Technology | Wideband dual-polarized four-quad loop antenna |
| CN111755810A (en) * | 2019-03-27 | 2020-10-09 | 北京小米移动软件有限公司 | Antenna module, terminal and manufacturing method of antenna module |
| CN111525245B (en) * | 2020-04-01 | 2022-06-07 | 温州职业技术学院 | Thing allies oneself with data centralized terminal device |
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| CN102484321A (en) * | 2009-09-02 | 2012-05-30 | 株式会社Kmw | Broadband dipole antenna |
| CN103326117A (en) * | 2013-06-20 | 2013-09-25 | 华南理工大学 | Broadband dual-polarization four-leaf clover plane antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2240114A1 (en) * | 1997-07-03 | 1999-01-03 | Thomas P. Higgins | Dual polarized cross bow tie dipole antenna having integrated airline feed |
| JP4896829B2 (en) * | 2007-07-02 | 2012-03-14 | Ｄｘアンテナ株式会社 | Antenna device |
| EP2617098B1 (en) * | 2010-09-17 | 2017-01-25 | BlackBerry Limited | Antenna for diversity operation |
| US8558747B2 (en) * | 2010-10-22 | 2013-10-15 | Dielectric, Llc | Broadband clover leaf dipole panel antenna |
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2015
- 2015-04-14 CN CN201580017952.7A patent/CN106170889B/en active Active
- 2015-04-14 WO PCT/JP2015/061418 patent/WO2015159871A1/en active Application Filing
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|---|---|---|---|---|
| CN102484321A (en) * | 2009-09-02 | 2012-05-30 | 株式会社Kmw | Broadband dipole antenna |
| CN103326117A (en) * | 2013-06-20 | 2013-09-25 | 华南理工大学 | Broadband dual-polarization four-leaf clover plane antenna |
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| A Novel Miniaturized Broadband Dual-Polarized;Ying Liu;《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》;20131231;第12卷;全文 |
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| Publication number | Publication date |
|---|---|
| WO2015159871A1 (en) | 2015-10-22 |
| CN106170889A (en) | 2016-11-30 |
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