CN109309287A - Antenna system - Google Patents
Antenna system Download PDFInfo
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- CN109309287A CN109309287A CN201710622584.XA CN201710622584A CN109309287A CN 109309287 A CN109309287 A CN 109309287A CN 201710622584 A CN201710622584 A CN 201710622584A CN 109309287 A CN109309287 A CN 109309287A
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- Prior art keywords
- bending structure
- antenna system
- antenna
- reflection plate
- metallic reflection
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Classifications
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- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention discloses a kind of antenna system, comprising: a dual polarized antenna, a metallic reflection plate, one first metal bending structure and one second metal bending structure.Metallic reflection plate is used for the radiation energy of reflecting polarized antenna.First metal bending structure includes one first planar section and one second planar section, wherein the second planar section is coupled to the first edge of metallic reflection plate via the first planar section, and the first planar section and the second planar section be not parallel to each other.Second metal bending structure includes a third planar section and a fourth plane part, and wherein fourth plane part is coupled to the second edge of metallic reflection plate via third planar section, and third planar section and fourth plane part be not parallel to each other.
Description
Technical field
The present invention relates to a kind of antenna systems, can grade (Equalize) each antenna beamwidth more particularly to one kind
The antenna system of (Beam Width).
Background technique
With the prosperity of mobile communication technology, mobile device is more prevalent in recent years, it is common for example: hand-held computer,
The portable electronic apparatus of mobile phone, multimedia player and other mixed functions.It is mobile in order to meet the needs of people
Device usually has the function of wireless telecommunications.Some cover the wireless communication range of long range, such as: mobile phone using 2G,
3G, LTE (Long Term Evolution) system and its used 700MHz, 850MHz, 900MHz, 1800MHz,
The frequency band of 1900MHz, 2100MHz, 2300MHz and 2500MHz are communicated, and some then cover short-range wireless telecommunications
Range, such as: Wi-Fi, Bluetooth system are communicated using the frequency band of 2.4GHz, 5.2GHz and 5.8GHz.
Wireless network base stations (Wireless Access Point) be make mobile device in it is indoor can high speed Internet access must
Want element.However, since indoor environment is filled with signal reflex and multi-path decaying (Multipath Fading), wireless network
Network base station must be able to be handled simultaneously from all directions and various polarized signals.Therefore, how in wireless network base stations
A kind of multipolarization direction and the substantially uniform antenna of beam angle are designed in the confined space, it has also become the one of designer is big now
Challenge.
Summary of the invention
In a preferred embodiment, the present invention provides a kind of antenna system, comprising: one first dual polarized antenna, including one
One diamond dipole aerial element and one second diamond dipole aerial element；One metallic reflection plate has opposite one first
Edge and a second edge, wherein the metallic reflection plate is used to reflect the radiation energy of first dual polarized antenna；One first gold medal
Belong to bending structure, including one first planar section and one second planar section, wherein second planar section is first flat via this
Face part is coupled to the first edge of the metallic reflection plate, and wherein first planar section and second planar section be not mutual
It is parallel；And one second metal bending structure, including a third planar section and a fourth plane part, the wherein Siping City
Facial lease making is coupled to the second edge of the metallic reflection plate by the third planar section, and wherein the third planar section and
The fourth plane part is not parallel to each other.
In some embodiments, the first metal bending structure and the second metal bending structure are for reducing first brill
The beam angle of stone shape dipole aerial element, and increase the beam angle of the second diamond dipole aerial element.
In some embodiments, the length of the first metal bending structure be less than or equal to the metallic reflection plate this first
The length at edge, and wherein the length of the second metal bending structure is less than or equal to the second edge of the metallic reflection plate
Length.
In some embodiments, which is separated by with the second diamond dipole aerial element
One spacing and orthogonal.
In some embodiments, which is parallel to the first edge of the metallic reflection plate
With the second edge, and the second diamond dipole aerial element perpendicular to the metallic reflection plate the first edge and this second
Edge.
In some embodiments, there is a center line between the first edge and the second edge of the metallic reflection plate,
And second planar section of the first metal bending structure and fourth plane part all courts of the second metal bending structure
Make to extend close to the direction of the center line.
In some embodiments, which covers between 2300MHz to the operational frequency bands between 3800MHz.
In some embodiments, the spacing of first dual polarized antenna and the metallic reflection plate is equal in the operational frequency bands
0.25 times of wavelength of frequency of heart.
In some embodiments, the antenna system further include: one first sheet metal is separated with first dual polarized antenna,
Wherein first dual polarized antenna is between first sheet metal and the metallic reflection plate.
In some embodiments, the length of first sheet metal between the operational frequency bands centre frequency 0.25 to 0.5
Between times wavelength.
In some embodiments, shape between first planar section and the metallic reflection plate of the first metal bending structure
At one first angle, one second is formed between second planar section and first planar section of the first metal bending structure
Angle forms a third angle between the third planar section of the second metal bending structure and the metallic reflection plate, and is somebody's turn to do
One the 4th angle is formed between the fourth plane part and the third planar section of second metal bending structure.
In some embodiments, which is equal to first angle, and the 4th angle is equal to second angle.
In some embodiments, the total value of first angle and second angle is less than 270 degree, and the third angle with
The total value of 4th angle is less than 270 degree.
In some embodiments, first angle, second angle, the third angle and the 4th angle are equal to
90 degree.
In some embodiments, the first metal bending structure in the plane where the metallic reflection plate have one first
Upright projection, the second metal bending structure and are somebody's turn to do in having one second upright projection in the plane where the metallic reflection plate
The length of the length of first upright projection and second upright projection is both less than 0.25 times of wave of the centre frequency of the operational frequency bands
It is long.
In some embodiments, the first metal bending structure is in height and second gold medal in the metallic reflection plate
Belong to 0.5 times of wavelength that bending structure is both less than the highest frequency of the operational frequency bands in the height in the metallic reflection plate.
In some embodiments, antenna system further include: one second dual polarized antenna, including a third diamond dipole
Antenna element and one the 4th diamond dipole aerial element, wherein second dual polarized antenna is adjacent to the first dual polarization day
Line.
In some embodiments, the antenna system further include: one second sheet metal is separated with second dual polarized antenna,
Wherein second dual polarized antenna is between second sheet metal and the metallic reflection plate.
It in some embodiments, can be with shape when using mutiple antennas system annular arrangement either demifacet annular arrangement
Antenna sets are exchanged at a wave beam, and selectively use any one antenna system, or selectively use the arbitrary neighborhood
The combination of dual-antenna system execute signal transmitting and receiving.
Detailed description of the invention
Figure 1A is the perspective view of antenna system described in one embodiment of the invention；
Figure 1B is the side view of antenna system described in one embodiment of the invention；
Fig. 2 is the S parameter figure of antenna system described in one embodiment of the invention；
Fig. 3 A is the first diamond dipole aerial element described in one embodiment of the invention in the radiation pattern in a plane
Figure；
Fig. 3 B is the second diamond dipole aerial element described in one embodiment of the invention in the radiation pattern in a plane
Figure；
Fig. 4 A is the gold described in one embodiment of the invention with the first metal bending structure and the second metal bending structure
Belong to reflecting plate for the equivalent circuit diagram of the first brilliant dipole antenna；
Fig. 4 B is the gold described in one embodiment of the invention with the first metal bending structure and the second metal bending structure
Belong to reflecting plate for the equivalent circuit diagram of the second brilliant dipole antenna；
Fig. 5 is the perspective view of antenna system described in another embodiment of the present invention；
Fig. 6 A~Fig. 6 I is that there is the first metal bending structure and the second metal to bend described in various embodiments of the present invention
The side view of the metallic reflection plate of structure；
Fig. 7 A is the gold described in one embodiment of the invention with the first metal bending structure and the second metal bending structure
Belong to the top view of reflecting plate；And
Fig. 7 B is described in another embodiment of the present invention with the first metal bending structure and the second metal bending structure
The top view of metallic reflection plate.
Symbol description
100,500~antenna system；
110~the first dual polarized antennas；
111~the first diamond dipole aerial elements；
112~the second diamond dipole aerial elements；
115~the first coaxial wires；
116~the first coaxial wires；
120~metallic reflection plate；
The first edge of 121~metallic reflection plate；
The second edge of 122~metallic reflection plate；
130~the first metal bending structures；
First planar section of 131~the first metal bending structures；
Second planar section of 132~the first metal bending structures；
140~the second metal bending structures；
The third planar section of 143~the second metal bending structures；
The fourth plane part of 144~the second metal bending structures；
150~the first sheet metals；
460~paraboloid；
470~complex reflector；
The center portion of 471~complex reflector；
The first side part of 472~complex reflector；
The second side part of 473~complex reflector；
First equivalent inductor of 474~complex reflector；
Second equivalent inductor of 475~complex reflector；
580~the second dual polarized antennas；
583~third diamond dipole aerial element；
584~the 4th diamond dipole aerial element；
590~the second sheet metals；
D1, D2, D3, D4~spacing；
FB~operational frequency bands；
The metal of H1~first bending structure is in the height in metallic reflection plate；
The metal of H2~second bending structure is in the height in metallic reflection plate；
L1, L2, L3, L4, L5, L6, L7, L8~length；
LC1~center line；
The metal of LT1~first bending structure is in the length of the first upright projection in metallic reflection plate；
The metal of LT2~second bending structure is in the length of the second upright projection in metallic reflection plate；
The S11 parameter of the diamond dipole aerial element of S11~first；
The S22 parameter of the diamond dipole aerial element of S22~second；
S21 parameter between the diamond of S21~first dipole aerial element and the second diamond dipole aerial element；
W3, W4~width；
X~X-axis；
Y~Y-axis；
Z~Z axis；
1~the first angle of θ；
2~the second angle of θ；
θ 3~third angle；
The angle of θ 4~the 4th.
Specific embodiment
For objects, features and advantages of the present invention can be clearer and more comprehensible, specific embodiments of the present invention are cited below particularly out,
And cooperate appended attached drawing, it is described in detail below.
Some vocabulary is used in the specification and claims to censure specific element.Those skilled in the art answer
It is understood that hardware manufacturer may call the same element with different nouns.This specification and claims not with
The difference of title is as the mode for distinguishing element, but with the difference of element functionally as the criterion of differentiation.Logical
The "comprising" and one word of " comprising " of piece specification and claim mentioned in are open term, therefore should be construed to " packet
Contain but be not limited to "." substantially " word then refers to that within an acceptable error range, those skilled in the art can be certain
The technical problem is solved in error range, reaches the basic technical effect.In addition, " coupling " word is in the present specification
Means directly and are indirectly electrically connected comprising any.Therefore, if it is described herein that a first device is coupled to a second device, then generation
The table first device can be directly electrically coupled to the second device, or be electrically connected to indirectly via other devices or connection means
The second device.
Figure 1A shows the perspective view of antenna system 100 described in an embodiment according to the present invention.Figure 1B is shown according to this hair
The side view of antenna system 100 described in a bright embodiment.Please also refer to Figure 1A, Figure 1B.Antenna system 100 can be applied to one
In wireless network base stations (Wireless Access Point).In the embodiment of Figure 1A, Figure 1B, antenna system 100 to
It less include one first dual polarized antenna (Dual-Polarized Antenna) 110, one metallic reflection plate (Metal
Reflection Plate) 120, one first metal bending structure (Metal Bending Structure) 130 and one
Two metal bending structures 140.It is not depicted in Figure 1A, Tu1BZhong although must be noted that, antenna system 100 may also include it
His element, such as: a non-conductor antenna house (Nonconductive Antenna Cover), a power supply module (Power
Supply Module) and a radio frequency (Radio Frequency, RF) module.
First dual polarized antenna 110 includes one first diamond dipole aerial element (Diamond-Shaped Dipole
Antenna Element) 111 and one second diamond dipole aerial element 112.First diamond dipole aerial element 111 can
A signal source (not shown) is coupled to via one first coaxial wire (Coaxial Cable) 115, and the second diamond dipole
Antenna element 112 can be coupled to signal source above-mentioned via one second coaxial wire 116.First diamond dipole aerial element
111 can be separated by a spacing (D2) and orthogonal with the second diamond dipole aerial element 112, to reach dual-polarized characteristic.
For example, if the first diamond dipole aerial element 111 has one first polarization direction and the second diamond dipole aerial element 112
With one second polarization direction, then the first polarization direction can be orthogonal with the second polarization direction.Specifically, the first diamond
Dipole aerial element 111 and the second diamond dipole aerial element 112 respectively may include a positive radiation arm and a negative radiation arm,
Middle positive radiation arm and negative radiation arm respectively can a substantially isosceles triangles.Each antenna element of first dual polarized antenna 110
Diamond-shaped can be used for increasing the operation bandwidth (Operation Bandwidth) of antenna system 100.
Metallic reflection plate 120 is used to reflect the radiation energy of the first dual polarized antenna 110.Specifically, metallic reflection plate
120 have a first edge 121 and a second edge 122, and wherein first edge 121 and a second edge 122 are opposite and mutual
In parallel.First diamond dipole aerial element 111 can be roughly parallel to the first edge 121 and second of metallic reflection plate 120
Edge 122.Second diamond dipole aerial element 112 can be approximately perpendicular to the first edge 121 and of metallic reflection plate 120
Two edges 122.
First metal bending structure 130 includes one first planar section 131 and one second planar section 132, wherein second
Planar section 132 is coupled to the first edge 121 of metallic reflection plate 120 via the first planar section 131.First metal bending knot
The first planar section 131 and the second planar section 132 of structure 130 be not parallel to each other.Second metal bending structure 140 includes one the
Three planar sections 143 and a fourth plane part 144, wherein fourth plane part 144 is coupled to via third planar section 143
The second edge 122 of metallic reflection plate 120.The third planar section 143 of second metal bending structure 140 and fourth plane part
144 is parallel to each other.There is a center line LC1 between the first edge 121 and second edge 122 of metallic reflection plate 120, wherein
First diamond dipole aerial element 111 of the first dual polarized antenna 110 can be aligned with each other with this center line LC1, and the first gold medal
Belong to the second planar section 132 of bending structure 130 and the fourth plane part 144 of the second metal bending structure 140 all towards close
Make to extend in the direction of this center line LC1.
In some embodiments, antenna system 100 further includes one first sheet metal 150.First sheet metal 150 can be presented
One square, a rectangle, a round, ellipse or other arbitrary shapes.First sheet metal 150 is floating
(Floating) and with the first dual polarized antenna 110 it is kept completely separate, wherein the first dual polarized antenna 110 is between the first sheet metal
Between 150 and metallic reflection plate 120.First sheet metal 150 can partially reflect, partial penetration is from the first dual polarized antenna
110 electromagnetic wave.According to actual measured results, the presence of the first sheet metal 150 helps to promote the first dual polarized antenna 110
Antenna gain.It must be noted that the first sheet metal 150 is not the necessary component for antenna system 100, in other embodiments
Also it can be removed.
Fig. 2 shows the S parameter figure (S parameter) of antenna system 100 described in an embodiment according to the present invention, wherein
Horizontal axis represents operating frequency (MHz), and the longitudinal axis represents S parameter (dB).It in the embodiment of fig. 2, is with the first diamond dipole antenna
The load point (Feeding Point) of thread elements 111 is used as a first port (Port 1), then with the second diamond dipole antenna
The load point of element 112 is as a second port (Port 2).Characteristic is (also for return loss (Return Loss) according to fig. 2
That is, the absolute value of S11, S22 parameter) it is found that the first diamond dipole aerial element 111 of antenna system 100 and the second diamond
Shape dipole aerial element 112 all can at least be covered between 2300MHz to the operational frequency bands FB between 3800MHz.Therefore, this hair
Bright antenna system 100 can at least support LTE (Long Term Evolution) Band40/Band 41/Band 42/Band
43 multiband wideband operation.In addition, the multipolarization characteristic of antenna system 100 also contributes to overcoming the multi-path of indoor environment
The problem of decaying (Multipath Fading).In addition, S21 (or S12) parameter according to fig. 2 is it is found that in aforementioned operation frequency band
In FB, isolation between the first diamond dipole aerial element 111 and the second diamond dipole aerial element 112 (also that is,
The absolute value of S21 parameter) up at least about 33.9dB, general multiple-input and multiple-output (Multi-Input and can have been met
Multi-Output) the practical application request of antenna system.
For general antenna system (not including the first metal bending structure 130 and the second metal bending structure 140),
It is excessive that it often faces beam angle (Beam Width) of the vertical polarized antenna on horizontal section, but horizontally-polarized antenna is in water
The problem of beam angle deficiency on side grain, this causes both vertical polarized antenna and horizontally-polarized antenna on horizontal section
Radiation beam width do not match that.For example, if by the first metal bending structure 130 and the second metal bending structure 140 all by
It is removed in antenna system 100, then its operating characteristic can be as shown in following table one.
Table one: the beam angle (no metal bending structure) of antenna system
In the present invention, the first metal bending structure 130 and the second metal bending structure 140 can be used for etc. changing
(Equalize) the first diamond dipole aerial element 111 (such as: vertical polarized antenna, but be not limited only to this) and the second diamond
The beam angle of both shape dipole aerial elements 112 (such as: horizontally-polarized antenna, but be not limited only to this).It has included the first gold medal
Belong to operating characteristic such as two institute of following table of the antenna system 100 of the invention of bending structure 130 and the second metal bending structure 140
Show.
Table two: the beam angle (having metal bending structure) of antenna system
Comparison sheet one and table two are it is found that the first metal bending structure 130 and the second metal bending structure 140 can be used for reducing
The beam angle of first diamond dipole aerial element 111, and the wave beam for increasing the second diamond dipole aerial element 112 is wide
Degree.For example, the beam angle of the first diamond dipole aerial element 111 is reduced by 59 degree originally in the Frequency point of 3800MHz
53 degree, and the beam angle of the second diamond dipole aerial element 112 is increased to 50 degree by 42 degree originally, the difference between this two
It is obviously reduced.Therefore, the first metal bending structure is added in the first edge 121 of metallic reflection plate 120 and second edge 122
130 and second metal bending structure 140 facilitate etc. to change (Equalize) first diamond dipole aerial element 111 and first and bore
The beam angle of both stone shape dipole aerial elements 112.Under this design, the first diamond dipole antenna of antenna system 100
Element 111 and the second diamond dipole aerial element 112 will be easier to match each other, so as to improve 100 conduct of antenna system
One wave beam exchanges radiance when antenna sets (Beam Switching Antenna Assembly).
Fig. 3 A shows that the first diamond dipole aerial element 111 is in XZ plane described in an embodiment according to the present invention
Radiation pattern figure.Fig. 3 B shows that the second diamond dipole aerial element 112 is in XZ plane described in an embodiment according to the present invention
On radiation pattern figure.Fig. 3 A and Fig. 3 B are measured in the Frequency point of 2300MHz.As shown in Fig. 3 A, Fig. 3 B, it is being added first
After metal bending structure 130 and the second metal bending structure 140, the first diamond dipole aerial element 111 and the first diamond
The beam angle of both shape dipole aerial elements 112 will become fairly close.
Fig. 4 A is shown described in an embodiment according to the present invention, and there is the first metal bending structure 130 and the second metal to bend
Equivalent circuit diagram of the metallic reflection plate 120 of structure 140 for the first diamond dipole aerial element 111.For the first diamond
For shape dipole aerial element 111, the metallic reflection with the first metal bending structure 130 and the second metal bending structure 140
Plate 120 equivalent can become a paraboloid (Parabolic Reflector) 460.Compared to the metal of script plane formula
Reflecting plate 120, this paraboloid 460 helps to reduce the beam angle of the first diamond dipole aerial element 111, and mentions
Rise the antenna gain of the first diamond dipole aerial element 111.
Fig. 4 B is shown described in an embodiment according to the present invention, and there is the first metal bending structure 130 and the second metal to bend
Equivalent circuit diagram of the metallic reflection plate 120 of structure 140 for the second diamond dipole aerial element 112.For the second diamond
For shape dipole aerial element 112, the metallic reflection with the first metal bending structure 130 and the second metal bending structure 140
Plate 120 equivalent can become a complex reflector (Compound Reflector) 470 comprising a center portion 471, one first
Lateral section 472, a second side part 473, one first equivalent inductor 474 and one second equivalent inductor 475.The
One equivalent inductor 474 is coupled between center portion 471 and first side part 472, and the second equivalent inductor 475 couples
Between center portion 471 and second side part 473.When the operating frequency of antenna system 100 is mobile toward low frequency direction, the
One equivalent inductor 474 and the second equivalent inductor 475 will respectively be similar to the short-circuit path (Short-Circuited), make
The overall reflective region for obtaining complex reflector 470 becomes larger (also that is, center portion 471, first side part 472 and second side
The gross area of rim portion 473)；Conversely, when the operating frequency of antenna system 100 is mobile toward high frequency direction, the first equivalent inductance
Device 474 and the second equivalent inductor 475 respectively will be similar to the path an open circuit (Open-Circuited), so that complex reflector
470 overall reflective region becomes smaller (also that is, only the area of center portion 471).Compared to the metallic reflection plate of script plane formula
120, this complex reflector 470 helps to increase the beam angle of the second diamond dipole aerial element 112, especially in high frequency
Frequency point effect by it is particularly evident (such as: 3600MHz or more).
Referring again to Figure 1A, Figure 1B.In some embodiments, the component size of antenna system 100 can be as what follows.
The length L1 of first diamond dipole aerial element 111 be substantially equal to the centre frequency of operational frequency bands FB 0.5 times of wavelength (λ/
2).The length L2 of second diamond dipole aerial element 112 is substantially equal to 0.5 times of wavelength of the centre frequency of operational frequency bands FB
(λ/2).The space D 1 of first dual polarized antenna 110 (or second diamond dipole aerial element 112) and metallic reflection plate 120 is big
Cause 0.25 times of wavelength (λ/4) of the centre frequency equal to operational frequency bands FB.In the present embodiment, the first diamond dipole antenna element
The space D 2 of part 111 and the second diamond dipole aerial element 112 is between 3mm to 7mm, and preferably 5mm.First sheet metal
150 length L3 or width W3 (λ/4~λ/2) between 0.25 to 0.5 times of wavelength of the centre frequency of operational frequency bands FB.The
The space D 3 of one dual polarized antenna 110 (or first diamond dipole aerial element 111) and the first sheet metal 150 between 10mm extremely
Between 20mm, and preferably 15mm.The length L4 of metallic reflection plate 120 between 60mm between 100mm, and preferably 80mm.
The width W4 of metallic reflection plate 120 between 100mm between 120mm, and preferably 110mm.In other embodiments, spacing
D2, D3 can be adjusted according to the centre frequency of diamond dipole aerial element.
Specifically, the component size of the first metal bending structure 130 and the second metal bending structure 140 can be such as following institute
It states.One first angle theta 1 is formed between the first planar section 131 and metallic reflection plate 120 of first metal bending structure 130, the
One second angle theta 2 of formation between the second planar section 132 and the first planar section 131 of one metal bending structure 130, second
Form a third angle theta 3 between the third planar section 143 and metallic reflection plate 120 of metal bending structure 140, and the second gold medal
Belong to and forms one the 4th angle theta 4 between the fourth plane part 144 and third planar section 143 of bending structure 140.To reach
The total value of the inductance characteristic (Inductance) needed, the first angle theta 1 and the second angle theta 2 is necessarily less than 270 degree, and third is pressed from both sides
The total value of angle θ 3 and the 4th angle theta 4 is necessarily less than 270 degree.In some embodiments, the first angle theta 1, the second angle theta 2,
Three angle thetas 3 and the 4th angle theta 4 are equal to 90 degree, so that 132 He of the second planar section of the first metal bending structure 130
The fourth plane part 144 of second metal bending structure 140 is parallel to metallic reflection plate 120.If the first metal bending structure
Both 130 and the second metal bending structure 140 are symmetrical in line along center line LC1, then third angle theta 3 will just be equal to the first angle theta
1, and the 4th angle theta 4 will just be equal to the second angle theta 2.In further embodiments, the first metal bending structure 130 and the second gold medal
Belong to both bending structures 140 be it is asymmetric, third angle theta 3 can be not equal to the first angle theta 1 at this time, and the 4th angle theta 4 can be with
Not equal to the second angle theta 2.
First metal bending structure 130 is in having one first upright projection in the plane where metallic reflection plate 120, and the
Two metal bending structures 140 are in having one second upright projection in the plane where metallic reflection plate 120, wherein the first vertical throwing
The length LT1 of the shadow and length LT2 of the second upright projection all must centre frequency less than operational frequency bands FB 0.25 times of wavelength (λ/
4).So-called herein " length ", which refers to, takes at 2 points in each upright projection, the attainable maximum spacing of the two institute.For example, aforementioned
Length LT1, LT2 can be all between 5mm between 15mm, and preferably 10mm.It is theoretical according to microwave circuit, the bending of the first metal
Structure 130 and each of the second metal bending structure 140 and metallic reflection plate 120 respectively equivalent can become end short circuit
Transmission line (Transmission Line), to form the first equivalent inductor 474 above-mentioned and the second equivalent inductor 475.One
As for, if the length LT1 of the first upright projection of the first metal bending structure 130 becomes larger and the second metal bending structure 140
The length LT2 of the second upright projection become larger, then the inductance value of the first equivalent inductor 474 and the second equivalent inductor 475
Inductance value can all increase；Conversely, if the length LT1 of the first upright projection of the first metal bending structure 130 becomes smaller and the second gold medal
The length LT2 for belonging to the second upright projection of bending structure 140 becomes smaller, then the inductance value and second etc. of the first equivalent inductor 474
The inductance value of effect inductor 475 can all be reduced.
First metal bending structure 130 is in height H1 and the second metal bending structure 140 in metallic reflection plate 120
0.5 times of wavelength (λ/2) of the highest frequency of operational frequency bands FB must be all less than in the height H2 in metallic reflection plate 120.This institute
Meaning " height " refers to be taken a bit on each metal bending structure, with the attainable maximum spacing of 120 institute of metallic reflection plate.Example
Such as, height H1, H2 above-mentioned can be respectively between 5mm between 15mm, and preferably 10mm.It is theoretical according to microwave circuit, first
The each of metal bending structure 130 and the second metal bending structure 140 and metallic reflection plate 120 can respectively equivalent to become one flat
Plate waveguide (Parallel-Plate Waveguide), wherein only TEM mode (Transverse Electric and
Magnetic Mode) electromagnetic wave can be transmitted in this parallel-plate waveguide, without transmit TE mode (Transverse
Electric Mode) or TM mode (Transverse Magnetic Mode) electromagnetic wave.In general, if the first metal
The height H1 of bending structure 130 becomes larger to become larger with the height H2 of the second metal bending structure 140, then the first equivalent inductor 474
Inductance value and the inductance value of the second equivalent inductor 475 can all increase；Conversely, if the height of the first metal bending structure 130
H1 becomes smaller to become smaller with the height H2 of the second metal bending structure 140, then the inductance value of the first equivalent inductor 474 and second equivalent
The inductance value of inductor 475 can all be reduced.
The range of the above component size is obtained according to many experiments result, helps to optimize antenna system 100
Beam angle, operational frequency bands and impedance matching (Impedance Matching).
Fig. 5 shows the perspective view of antenna system 500 described in another embodiment according to the present invention.In the 5 embodiment of figure 5,
Antenna system 500 further include one second dual polarized antenna 580 or (and) one second sheet metal 590.In addition, being and the second dual polarization
Antenna 580 is compatible, and the length L4 of metallic reflection plate 120 can be changed between 180mm between 220mm, and preferably 200mm.The
Two dual polarized antennas 580 include a third diamond dipole aerial element 583 and one the 4th diamond dipole aerial element 584,
Wherein third diamond dipole aerial element 583 and the 4th diamond dipole aerial element 584 are separated by a spacing and orthogonal.
For example, third diamond dipole aerial element 583 can be roughly parallel to the first edge 121 and second of metallic reflection plate 120
Edge 122 (can be used as vertical polarized antenna), and the 4th diamond dipole aerial element 584 can be approximately perpendicular to metallic reflection
The first edge 121 and second edge 122 (can be used as horizontally-polarized antenna) of plate 120.Second sheet metal 590 be floating and
It is kept completely separate with the second dual polarized antenna 580, wherein the second dual polarized antenna 580 is between the second sheet metal 590 and metallic reflection
Between plate 120.The structure and size of second dual polarized antenna 580 and the second sheet metal 590 are all substantially bipolar with above-mentioned first
Change antenna 110 and the first sheet metal 150 is identical.Second dual polarized antenna 580 is adjacent to the first dual polarized antenna 110.For example, the
The space D 4 of two dual polarized antennas 580 and the first dual polarized antenna 110 can be between 50mm between 60mm, and preferably
56.5mm.In some embodiments, the first dual polarized antenna 110 and the second dual polarized antenna 580 are opened simultaneously and form one
The array antenna system of 2x2MIMO, wherein the first diamond dipole aerial element 111 and third diamond dipole aerial element
583 be to be controlled together, and in addition the second diamond dipole aerial element 112 and the 4th diamond dipole aerial element 584 are
It is controlled together.In further embodiments, the first dual polarized antenna 110 and the second dual polarized antenna 580 are opened and shape simultaneously
At the array antenna system of a 4x4MIMO, wherein the first diamond dipole aerial element 111, the second diamond dipole antenna element
Part 112, third diamond dipole aerial element 583 and the 4th diamond dipole aerial element 584 are controlled each independently
System.When using 500 annular arrangement of mutiple antennas system either demifacet annular arrangement, wave beam exchange antenna can be formed
Group, and any one antenna system 500 is selectively used, or selectively use two antenna systems of the arbitrary neighborhood
500 combination executes signal transmitting and receiving.For example, when signal to be received is from from all directions, wave beam exchanges antenna sets
Can only enable (Enable) towards maximum signal direction an antenna system 500, and by other 500 forbidden energy of antenna system
(Disabled).Or it opens adjacent two antenna systems 500 simultaneously according to the direction of signal strength and merges wave to form one
Beam.Although actually antenna system 500 may include more or more it is to be understood that Fig. 5 shows lucky two dual polarized antennas
The dual polarized antenna of small number, such as: 1,3,4,5 or 6.
Fig. 6 A~Fig. 6 I, which is shown, has the first metal bending structure 130 and second described in multiple embodiments according to the present invention
The side view of the metallic reflection plate 120 of metal bending structure 140.Observation Fig. 6 A~Fig. 6 I can more understand length LT1 above-mentioned,
LT2 and height H1, H2 are how to define.According to actual measured results, the different structure of Fig. 6 A~Fig. 6 I is both contributed to
Change each vertical polarized antenna of antenna system and the beam angle of horizontally-polarized antenna.
Fig. 7 A is shown described in an embodiment according to the present invention, and there is the first metal bending structure 130 and the second metal to bend
The top view of the metallic reflection plate 120 of structure 140.In the embodiment of Fig. 7 A, the length L5 of the first metal bending structure 130 is small
In the length L7 of the first edge 121 of metallic reflection plate 120, and the length L6 of the second metal bending structure 140 is anti-less than metal
Penetrate the length L8 of the second edge 122 of plate 120.Also that is, aforementioned each metal bending structure only covers the correspondence of metallic reflection plate 120
The a part at edge.Fig. 7 B, which is shown, has the first metal bending structure 130 and second described in another embodiment according to the present invention
The top view of the metallic reflection plate 120 of metal bending structure 140.In the embodiment of Fig. 7 B, the first metal bending structure 130
Length L5 is just equal to the length L7 of the first edge 121 of metallic reflection plate 120, and the length L6 of the second metal bending structure 140
Just equal to the length L8 of the second edge 122 of metallic reflection plate 120.Also that is, aforementioned each metal bending structure can to cover metal anti-
Penetrate the entire corresponding edge of plate 120.According to actual measured results, Fig. 7 A, Fig. 7 B different structure both contribute to etc. to change aerial system
Each vertical polarized antenna of system and the beam angle of horizontally-polarized antenna, but the effect of Fig. 7 B can be more preferable than Fig. 7 A.
The present invention provides a kind of novel antenna system, compared with traditional design, at least has following advantage: (1) may be used
Making the beam angle of the antenna of different polarization directions (such as: horizontal polarization and vertical polarization) becomes almost the same；(2) it can be improved
Isolation between antennae；(3) broadband operation can be covered；And (4) can strengthen the antenna gain of antenna system.Therefore, this hair
It is bright to be well suited for being applied to various indoor environments, to overcome tradition to decay because of signal reflex and multi-path caused by communication quality it is bad
The problem of.
It is worth noting that, above-described component size, component parameters, component shape and frequency range are all non-is
Restrictive condition of the invention.Antenna designers can need to adjust these setting values according to different.In addition, aerial system of the invention
System is not limited in the illustrated state of Figure 1A~Fig. 7 B.The present invention can only include one or more any realities of Figure 1A~Fig. 7 B
Apply one or more any features of example.In other words, and the feature of not all diagram must be implemented on aerial system of the invention simultaneously
In system.
Ordinal number in this specification and claim, such as " first ", " second ", " third " etc., each other
There is no precedence relationships sequentially, are only used for mark and distinguish two different elements with same name.
Although disclosing the present invention in conjunction with preferred embodiment above, the range being not intended to limit the invention is appointed
What those skilled in the art can do a little change and retouching without departing from the spirit and scope of the present invention, therefore the present invention
Protection scope should be subject to what the appended claims were defined.
Claims (19)
1. a kind of antenna system, comprising:
First dual polarized antenna, including the first diamond dipole aerial element and the second diamond dipole aerial element；
Metallic reflection plate has opposite first edge and second edge, and wherein the metallic reflection plate is for reflecting this first pair
The radiation energy of poliarizing antenna；
First metal bending structure, including the first planar section and the second planar section, wherein second planar section is via this
First planar section is coupled to the first edge of the metallic reflection plate, and wherein first planar section and second planar portions
Divide not parallel to each other；And
Second metal bending structure, including third planar section and fourth plane part, wherein the fourth plane part is via this
Third planar section is coupled to the second edge of the metallic reflection plate, and the wherein third planar section and fourth plane portion
Divide not parallel to each other.
2. antenna system as described in claim 1, wherein the first metal bending structure and the second metal bending structure are used
In the beam angle of diminution the first diamond dipole aerial element, and increase the wave beam of the second diamond dipole aerial element
Width.
3. antenna system as described in claim 1, wherein the length of the first metal bending structure is less than or equal to the metal
The length of the first edge of reflecting plate, and wherein the length of the second metal bending structure is less than or equal to the metallic reflection plate
The second edge length.
4. antenna system as described in claim 1, wherein the first diamond dipole aerial element and second diamond are even
Pole antenna element is separated by a spacing and orthogonal.
5. antenna system as described in claim 1, wherein the first diamond dipole aerial element is parallel to the metallic reflection
The first edge of plate and the second edge, and the second diamond dipole aerial element perpendicular to the metallic reflection plate this
One edge and the second edge.
6. antenna system as described in claim 1, wherein between the first edge and the second edge of the metallic reflection plate
With a center line, and the 4th of second planar section of the first metal bending structure and the second metal bending structure
Planar section all is made to extend towards the direction close to the center line.
7. antenna system as described in claim 1, wherein the antenna system covers between 2300MHz between 3800MHz
One operational frequency bands.
8. antenna system as claimed in claim 7, wherein the spacing of first dual polarized antenna and the metallic reflection plate is equal to
0.25 times of wavelength of the centre frequency of the operational frequency bands.
9. antenna system as claimed in claim 7, further includes:
First sheet metal is separated with first dual polarized antenna, wherein first dual polarized antenna between first sheet metal and
Between the metallic reflection plate.
10. antenna system as claimed in claim 9, wherein the length of first sheet metal is between the center of operational frequency bands frequency
Between 0.25 to 0.5 times of wavelength of rate.
11. antenna system as described in claim 1, wherein first planar section of the first metal bending structure and the gold
Belong to and forms one first angle between reflecting plate, second planar section and first planar section of the first metal bending structure
Between formed one second angle, form one between the third planar section of the second metal bending structure and the metallic reflection plate
Third angle, and one the 4th folder is formed between the fourth plane part of the second metal bending structure and the third planar section
Angle.
12. antenna system as claimed in claim 11, wherein the third angle is equal to first angle, and the 4th angle etc.
In second angle.
13. antenna system as claimed in claim 11, wherein the total value of first angle and second angle is less than 270
Degree, and the total value of the third angle and the 4th angle is less than 270 degree.
14. antenna system as claimed in claim 11, wherein first angle, second angle, the third angle, and should
4th angle is equal to 90 degree.
15. antenna system as claimed in claim 7, wherein the first metal bending structure is in flat where the metallic reflection plate
On face have one first upright projection, the second metal bending structure in the plane where the metallic reflection plate have one second
Upright projection, and the length of the length of first upright projection and second upright projection is both less than the center frequency of the operational frequency bands
0.25 times of wavelength of rate.
16. antenna system as claimed in claim 7, wherein the first metal bending structure is in the height in the metallic reflection plate
Degree and the second metal bending structure in the height in the metallic reflection plate are both less than the highest frequency of the operational frequency bands
0.5 times of wavelength.
17. antenna system as described in claim 1, further includes:
Second dual polarized antenna, including third diamond dipole aerial element and the 4th diamond dipole aerial element wherein should
Second dual polarized antenna is adjacent to a dual polarized antenna.
18. antenna system as claimed in claim 17, further includes:
Second sheet metal is separated with second dual polarized antenna, wherein second dual polarized antenna between second sheet metal and
Between the metallic reflection plate.
19. antenna system as described in claim 1, wherein antenna system is that a wave beam exchanges antenna sets, and selectively makes
Signal transmitting and receiving is executed with first dual polarized antenna, second dual polarized antenna or a combination thereof.
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| CN201710622584.XA CN109309287B (en) | 2017-07-27 | 2017-07-27 | Antenna system |
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| CN201710622584.XA CN109309287B (en) | 2017-07-27 | 2017-07-27 | Antenna system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111641050A (en) * | 2020-06-09 | 2020-09-08 | 中国电子科技集团公司第三十六研究所 | Common-caliber multi-polarization antenna |
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| CN109309287B (en) | 2021-03-19 |
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