CN106207422A - Antenna assembly - Google Patents
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- CN106207422A CN106207422A CN201510379968.4A CN201510379968A CN106207422A CN 106207422 A CN106207422 A CN 106207422A CN 201510379968 A CN201510379968 A CN 201510379968A CN 106207422 A CN106207422 A CN 106207422A
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Abstract
The open a kind of antenna assembly of the present invention, include a double frequency cross dipole antenna, include four radiant bodies, each radiant body is extended by a central axial plane, and comprise one first Department of Radiation and one second Department of Radiation to receive and dispatch one first frequency band and the wireless signal of one second frequency band respectively, and each radiant body place plane with adjacent radiation body place plane substantially in 90 degree；And a reflecting plate, it is arranged at the side of this double frequency cross dipole antenna；Wherein, the position of this reflecting plate and shape are relevant to the signal wavelength corresponding to this first frequency band and the second frequency band, and make this double frequency cross dipole antenna in this first frequency band substantially in directivity and in this second frequency band substantially in omni-directional.
Description
Technical field
The present invention relates to a kind of antenna assembly, especially relate to one and be operable in double frequency, and can be in high frequency
Frequency band substantially in directivity and in low-frequency band substantially in isotropic antenna assembly.
Background technology
Along with the evolution of mechanics of communication, many wireless telecommunication systems have supported dual frequency operation.Double in order to reach
Frequency operation, prior art makes be suitable for high and low frequency antenna respectively, then is combined into antenna with duplexer
Device.But, when there being miniaturization demand, this kind of antenna assembly will be greatly reduced it after miniaturization and increase
Benefit value, derives integrity problem.
Additionally, antenna assembly need to adjust aerial angle or point to position in certain applications in good time, adjusting
Journey is likely to result in signal dead angle.Such as, domestic networking gear (Indoor Customer Premises
Equipments) it is used to provide indoor wireless Communications service, due to indoor often because of the shadow such as compartment, furniture
Ringing the transmission of radio wave, therefore prior art has been developed in and can automatically adjust aerial angle or point to position
Antenna assembly, thus domestic networking gear suitably can adjust wireless according to the distribution scenario of indoor user
Signal transmitting and receiving situation.But, when domestic networking gear adjusts the transmitting angle of antenna assembly or points to position
Time, transient signals dead angle may be caused during the course, if just there being user to fall within signal dead angle, or it is traditional thread binding
Put when regulating the speed slower, by impact use situation, bring inconvenience.
Therefore, how to improve dual-band antenna yield value after miniaturization, and how to avoid angle adjustable
Or the signal dead angle that the antenna assembly of position is in course of adjustment, it has also become one of this area important topic.
Summary of the invention
Therefore, present invention is primarily targeted at a kind of antenna assembly of offer, to improve lacking of prior art
Point.
For reaching above-mentioned purpose, the embodiment of the present invention discloses a kind of antenna assembly, includes a double frequency and intersects even
Pole antenna, includes four radiant bodies, and each radiant body is extended by a central axial plane, and comprises one
First Department of Radiation and one second Department of Radiation are to receive and dispatch one first frequency band and the wireless communication of one second frequency band respectively
Number, and each radiant body place plane and adjacent radiation body place plane are substantially in 90 degree；And one is anti-
Penetrate plate, be arranged at the side of this double frequency cross dipole antenna；Wherein, this reflecting plate is thrown along this central shaft
Shadow is substantially square, by this double frequency cross dipole antenna edge in one in one first projection result of a plane of reference
This central shaft is projected on one second projection result of this plane of reference and corresponds roughly to this foursquare two diagonal angles
Line, this plane of reference is perpendicular to this central shaft；Wherein, a mid frequency of this first frequency band higher than this second
One mid frequency of frequency band, this foursquare pair of horns line length of this first projection result more than this first
0.6 times of signal wavelength corresponding to frequency band and less than the 0.35 of this signal wavelength corresponding to the second frequency band
Times, and the minimum distance of arbitrary first Department of Radiation of this reflecting plate and this four radiant body is between this first frequency band
Between 0.15 times and 0.25 times of corresponding signal wavelength, make this double frequency cross dipole antenna in this
One frequency band substantially in directivity and in this second frequency band substantially in omni-directional.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention one antenna assembly；
Fig. 2 A to Fig. 2 C is the part schematic diagram of the antenna assembly of Fig. 1；
The antenna assembly of Fig. 3 A, Fig. 3 B respectively Fig. 1 operates in the S parameter schematic diagram of different frequency bands；
The antenna assembly of Fig. 3 C, Fig. 3 D, Fig. 3 E, Fig. 3 F respectively Fig. 1 operates in different frequency bands
The schematic diagram of field pattern analog result；
Fig. 4 is the CURRENT DISTRIBUTION schematic diagram of the antenna assembly of Fig. 1；
Fig. 5 A is the schematic diagram of the embodiment of the present invention one antenna assembly；
Fig. 5 B is the CURRENT DISTRIBUTION schematic diagram of the antenna assembly of Fig. 5 A；
The antenna assembly of Fig. 6 A, Fig. 6 B respectively Fig. 5 A operates in the S parameter schematic diagram of different frequency bands；
The antenna assembly of Fig. 6 C, Fig. 6 D, Fig. 6 E, Fig. 6 F respectively Fig. 5 A operates in different frequency bands
The schematic diagram of field pattern analog result；
Fig. 7 A is the schematic diagram of the embodiment of the present invention one antenna assembly；
Fig. 7 B to Fig. 7 E is the part schematic diagram of the antenna assembly of Fig. 7 A；
The antenna assembly of Fig. 8 A, Fig. 8 B respectively Fig. 7 A operates in the S parameter schematic diagram of different frequency bands；
The antenna assembly of Fig. 8 C, Fig. 8 D, Fig. 8 E, Fig. 8 F respectively Fig. 7 A operates in different frequency bands
The schematic diagram of field pattern analog result；
Fig. 9 A～Fig. 9 H, Figure 10 A, Figure 10 B are respectively the antenna assembly of different embodiments of the invention
Schematic diagram.
Symbol description
Detailed description of the invention
Refer to Fig. 1 and Fig. 2 A to Fig. 2 C, Fig. 1 is showing of the embodiment of the present invention one antenna assembly 10
It is intended to, and the part schematic diagram that Fig. 2 A to Fig. 2 C is antenna assembly 10.Antenna assembly 10 includes
One double frequency cross dipole antenna 100 and a reflecting plate 102, it is operable in double frequency (such as first, second
Frequency band, and the mid frequency of the first frequency band is higher than the mid frequency of the second frequency band), and can be in high frequency band
(such as the first frequency band) substantially in directivity and in low-frequency band (such as the second frequency band) substantially in omni-directional.
The framework of double frequency cross dipole antenna 100, as the term suggests, it is to be arranged with interleaved mode by two dipole antennas.
Specifically, double frequency cross dipole antenna 100 includes radiant body RT1～RT4, and each radiant body is
Extended to a plane by a central shaft CL, and adjacent radiation body place plane is substantially in 90 degree, i.e. radiates
Body RT1 is vertical with radiant body RT2, RT4, and radiant body RT2 is vertical with radiant body RT1, RT3,
And so on；Therefore, radiant body RT1, RT3 form one first dipole antenna, and radiant body RT2,
RT4 forms one second dipole antenna, and two dipole antennas are respectively in (+45 °) and (-45 °) polarization, therefore is phase
The most orthogonal, isolation can be promoted.Further, radiant body RT1～RT4 comprises two Departments of Radiation respectively
RT1_1, RT1_2, RT2_1, RT2_2, RT3_1, RT3_2, RT4_1, RT4_2, and pass through
Difference in length, Department of Radiation RT1_1, RT2_1, RT3_1, RT4_1 can receive and dispatch the wireless of high frequency band
Signal, is shaped like in trapezoidal or knot shape, and Department of Radiation RT1_2, RT2_2, RT3_2, RT4_2
Then in order to receive and dispatch the wireless signal of low-frequency band, its substantially in strip and comprise two (90 degree) bending.This
Outward, in this instance, to be arranged at the A face of a substrate 104 (clear and definite for asking, separately for radiant body RT1, RT3
One side is denoted as B face), and the C face that radiant body RT2, RT4 are arranged at a substrate 106 is (bright for asking
Really, another side is denoted as D face), but be not limited to this, all can be by central shaft CL to orthogonal four
Individual direction is extended Double-frequency dipole antenna and is applied both to the present invention；In other words, as long as spoke can suitably be fixed
The relative position of beam RT1～RT4, radiant body RT1～RT4 can achieve in any way, and does not limits
In being formed on substrate 104,106.Meanwhile, substrate 104,106 is formed with slotted eye 1040,1060,
This is required for assembling, and adaptability adjusts, and is not limited to this.It addition, radiant body RT1～RT4 is in feedback
The shape of access point is slightly different, and as shown in the region FB of the region FA and Fig. 2 B of Fig. 2 A, it is same
Considering for assembling, and be not limited to this, the shape of radiant body RT1～RT4 also can be identical or different,
All belong to the scope of the present invention.Such as, if Department of Radiation RT1_1, RT2_1, RT3_1, RT4_1
Current path can meet the quarter-wave treating receiving and transmitting signal, and its shape is not limited to trapezoidal or knot
Shape；In like manner, the current path of Department of Radiation RT1_2, RT2_2, RT3_2, RT4_2 should meet due-in
The quarter-wave signaled, its shape is not limited to the strip of two bendings.
On the other hand, reflecting plate 102 is made for metal material, and it is arranged at double frequency cross dipole antenna 100
Side, and in this instance, reflecting plate 102 is square, and substrate 104,106 and reflecting plate 102
Vertical and substantially overlapping with the diagonal of reflecting plate 102.In other words, if reflecting plate 102 is considered as a ginseng
Examine face, then double frequency cross dipole antenna 100 is projected on the projection on reflecting plate 102 along central shaft CL
Result substantially falls within or corresponds to the diagonal of reflecting plate 102.
In order to make double frequency cross dipole antenna 100 in high frequency band substantially in directivity and big in low-frequency band
Causing in omni-directional, the embodiment of the present invention is by controlling the size of reflecting plate 102 and intersecting relative to double frequency even
The position of pole antenna 100.More particularly, the catercorner length L of reflecting plate 102 need to be more than high again and again
0.6 times of signal wavelength corresponding to band and less than 0.35 times of the signal wavelength corresponding to low-frequency band,
And reflecting plate 102 and high-frequency radiation part RT1_1 of radiant body RT1～RT4, RT2_1, RT3_1,
The minimum distance H of RT4_1 need between 0.15 of the signal wavelength corresponding to high frequency band times with 0.25 times
Between.Consequently, it is possible to double frequency cross dipole antenna 100 can be in high frequency band substantially in directivity and in low
Again and again band is substantially in omni-directional, and associated analog result can prove further.
For example, with U.S.'s rule Long Term Evolution (Long Term Evolution, LTE) communication system it is
Example, its multiple operational frequency bands of specification, wherein Band4 frequency band be 1710MHz～1755MHz and
2110MHz～2155MHz, and Band13 frequency band be 777MHz～787MHz and 746MHz～
756MHz.In this case, Department of Radiation RT1_1, RT2_1, RT3_1, RT4_1 can suitably be adjusted
Length to receive and dispatch the signal of Band4, and adjust Department of Radiation RT1_2, RT2_2, RT3_2, RT4_2
Length with receive and dispatch Band13 signal, the catercorner length L of reflecting plate 102 is designed as simultaneously
0.6 times (about 75mm) of the wavelength corresponding to 1710MHz is to the wavelength corresponding to 787MHz
Between 0.35 times (about 94mm), and by reflecting plate 102 and Department of Radiation RT1_1, RT2_1, RT3_1,
The minimum range of RT4_1 is designed as 0.15 times (about 18.75mm) of the wavelength corresponding to 1710MHz
Between 0.25 times (about 31.25mm), then double frequency cross dipole antenna 100 can be made to operate in Band4
Time be directivity, and be omni-directional when Band13, associated analog result refers to Fig. 3 A to Fig. 3 F.
Fig. 3 A, Fig. 3 B respectively antenna assembly 10 operates in the S parameter schematic diagram of Band13 and Band4,
Wherein solid line represents the reflection loss of (being formed it by radiant body RT1, RT3) first dipole antenna (i.e.
S11) analog result, dotted line represents (being formed it by radiant body RT2, RT4) second dipole antenna
Reflection loss (i.e. S22) analog result, dotted line then represents that the first dipole antenna is relative to the second dipole
Transmission coefficient (i.e. S21 the represents isolation) analog result of antenna.From Fig. 3 A and Fig. 3 B,
Antenna assembly 10 can correctly operate in Band13 and Band4, and the first dipole antenna and the second dipole antenna
Isolation between line is up to more than 30dB, therefore can correctly operate.
Further, Fig. 3 C, Fig. 3 D respectively first dipole antenna operate in Band13 and Band4
Field pattern analog result, and Fig. 3 E, Fig. 3 F respectively second dipole antenna operate in Band13 and Band4
Field pattern analog result.In fig. 3 c, solid line represents that the first dipole antenna operates in Band13
The field pattern of 750MHz, and triangle line represents that the first dipole antenna operates in 780MHz in Band13
Field pattern；In fig. 3d, solid line represents that the first dipole antenna operates in the same of 1740MHz in Band4
Polarization (Co-polarization) field pattern, triangle line represents that the first dipole antenna operates in Band4
The same polarization field pattern of 2140MHz, dotted line represents that the first dipole antenna operates in 1740MHz in Band4
Heteropolar (Cross-polarization) field pattern, square line represents that the first dipole antenna operates in Band4
The heteropolar field pattern of middle 2140MHz.In like manner, in fig. 3e, solid line represents the second dipole antenna operation
The field pattern of 750MHz in Band13, and triangle line represents that the second dipole antenna operates in Band13
The field pattern of middle 780MHz；In Fig. 3 F, dotted line represents that the second dipole antenna operates in Band4
The same polarization field pattern of 1740MHz, square line represents that the second dipole antenna operates in 2140MHz in Band4
Same polarization field pattern, solid line represents that the second dipole antenna operates in the heteropolar of 1740MHz in Band4
Field pattern, triangle line represents that the second dipole antenna operates in the heteropolar field pattern of 2140MHz in Band4.
From Fig. 3 C to Fig. 3 F, substantially in full when first, second dipole antenna operates in Band13
Tropism, and substantially in directivity when Band4.It follows that by suitably adjusting reflecting plate 102
Size and position, antenna assembly 10 not only can be in high and low frequency frequency band normal operating, and can be frequent in height
Band (such as Band4) substantially in directivity and in low-frequency band (such as Band13) substantially in omni-directional.As
This one, the embodiment of the present invention is not required to duplexer, can realize operating in the antenna assembly of high and low frequency；
The more important thing is, for need to adjust aerial angle or point to the application of position in good time, such as domestic networking gear,
According to the antenna assembly 10 of the embodiment of the present invention, when adjusting aerial angle or pointing to position, due to sky
Line apparatus 10 can maintain omni-directional in low-frequency band, therefore can reduce or avoid the generation at signal dead angle, can
For maintaining wireless transmission function, it is to avoid impact uses situation.
It is noted that antenna assembly 10 is embodiments of the invention, those skilled in the art works as
Different modifications can be done according to this, and be not limited to this.For example, as it was previously stated, double frequency cross dipole sky
In line 100, the shape of radiant body RT1～RT4, assembling mode etc. all can suitably adjust, and are not limited to figure
Shown in 1 and Fig. 2 A to Fig. 2 C.Such as, from Fig. 3 C, Fig. 3 E, double frequency cross dipole antenna
100 gain offsets at low frequency are about 5.2dB, and its main cause is the first dipole antenna and the second idol
Pole antenna tilts 45 ° respectively, and therefore field pattern energy at left and right edges can somewhat reduce.Additionally, by scheming
3D, Fig. 3 F understands, and the first dipole antenna and the second dipole antenna are 1710MHz's to 1755MHz
In scope (i.e. the uplink frequency range of Band 4), antenna gain about 6.9dBi, but at 2110MHz extremely
In the scope (i.e. the lower link frequency range of Band 4) of 2155MHz, antenna highest-gain (Peak Gain)
The most on the low side, the gain of its dead ahead the most about 2.5dBi, it main reason is that portion of electrical current flows to low frequency spoke
Penetrate portion (i.e. RT1_2, RT2_2, RT3_2, RT4_2), thus result in gain and decline.Refer to figure
4, Fig. 4 is the antenna assembly 10 of Fig. 1 CURRENT DISTRIBUTION schematic diagram when operating in 2140MHz.For asking
Succinctly, Fig. 4 eliminates the component symbol of antenna assembly 10, and it refers to Fig. 1 and Fig. 2 A to Fig. 2 C.
As shown in the region 40,42 of Fig. 4, when operating in high frequency band, the low frequency radiation of antenna assembly 10
Electric current transversely in portion (comparison chart 1 and Fig. 2 A to Fig. 2 C, i.e. Department of Radiation RT1_2, RT3_2)
Very big, cause high frequency field pattern to disperse toward both sides, cause gain to decline.
In order to improve the high-frequency gain of antenna assembly 10, refer to Fig. 5 A, Fig. 5 A is that the present invention implements
The schematic diagram of example one antenna assembly 50.Antenna assembly 50 is derived by antenna assembly 10, therefore similar elements
Continue to use same-sign to represent.It is antenna assembly 50 at antenna assembly 50 and antenna assembly 10 main difference
Radiant body RT1～RT4 of antenna assembly 10 is replaced into radiant body RT1 '～RT4 ', and becomes a pair of
Frequently cross dipole antenna 500.In addition, antenna assembly 50 be operable in equally double frequency (such as first,
Second frequency band), and can in high frequency band (such as the first frequency band) substantially in directivity and in low-frequency band (as
Second frequency band) substantially in omni-directional.Radiant body RT1 '～RT4 ' can effectively reduce when operating in high frequency low
The transverse current in radio-frequency radiation portion, is that antenna assembly 50 operates in please continue to refer to Fig. 5 B, Fig. 5 B
CURRENT DISTRIBUTION schematic diagram during 2140MHz.From Fig. 5 B, the low frequency of radiant body RT1 '～RT4 '
Department of Radiation is several without transverse current, therefore can improve high-frequency gain.Specifically, radiant body RT1 '～RT4 '
Length still conform to the requirement of radiant body RT1～RT4, Main Differences is the bending side in low frequency radiation portion
Formula (as shown in region 52,54), and partial segments (such as 502,504,506,508) tool width change
Change, and make transverse area (such as 52,54) several without transverse current, thus high-frequency gain can be strengthened.
Operate in please continue to refer to Fig. 6 A to Fig. 6 E, Fig. 6 A, Fig. 6 B respectively antenna assembly 50
The S parameter schematic diagram of Band13 and Band4, wherein solid line represents (by radiant body RT1 ', RT3 ' institute
Form it) reflection loss (i.e. S11) analog result of the first dipole antenna, dotted line represents (by radiating
Body RT2 ', RT4 ' are formed it) reflection loss (i.e. S22) analog result of the second dipole antenna, and
Dotted line then represents transmission coefficient (i.e. S21, the expression isolation relative to the second dipole antenna of first dipole antenna
Degree) analog result (S21 of Fig. 6 A is beyond representing that scope is not shown).Fig. 6 C, Fig. 6 D are respectively
It it is the first dipole antenna field pattern analog result of operating in Band13 and Band4；Wherein, at Fig. 6 C
In, solid line represents that the first dipole antenna operates in the field pattern of 750MHz in Band13, and triangle line table
Show that the first dipole antenna operates in the field pattern of 780MHz in Band13；In figure 6d, solid line represents
First dipole antenna operates in same polarization (Co-polarization) field pattern of 1740MHz in Band4,
Triangle line represents that the first dipole antenna operates in the same polarization field pattern of 2140MHz in Band4, dotted line table
Show that the first dipole antenna operates in heteropolar (Cross-polarization) field of 1740MHz in Band4
Type, square line represents that the first dipole antenna operates in the heteropolar field pattern of 2140MHz in Band4.Figure
6E, Fig. 6 F the respectively second dipole antenna operates in the field pattern analog result of Band13 and Band4,
Wherein, in Fig. 6 E, solid line represents that the second dipole antenna operates in the field pattern of 750MHz in Band13,
And triangle line represents that the second dipole antenna operates in the field pattern of 780MHz in Band13；In Fig. 6 F,
Dotted line represents that the second dipole antenna operates in the same polarization field pattern of 1740MHz in Band4, square line table
Showing that the second dipole antenna operates in the same polarization field pattern of 2140MHz in Band4, solid line represents that second is even
Pole antenna operation is the heteropolar field pattern of 1740MHz in Band4, and triangle line represents the second dipole antenna
Operate in the heteropolar field pattern of 2140MHz in Band4.
From Fig. 6 A and Fig. 6 B, antenna assembly 50 can correctly operate in Band13 and Band4,
It is impedance matching about-7dB at low frequency, and the isolation between the first dipole antenna and the second dipole antenna can
Reach more than 30dB, more more than 40dB at low frequency, therefore can correctly operate.Can by Fig. 6 C to Fig. 6 F
Know, substantially in omni-directional when first, second dipole antenna operates in Band13, and bright when Band4
Aobvious in directivity；Meanwhile, the double frequency cross dipole antenna 500 gain offsets at low frequency is about 5.5dB,
And the first dipole antenna and the second dipole antenna are at scope (the i.e. Band 4 of 1710MHz to 1755MHz
Uplink frequency range) in, antenna gain about 7dBi, and 2110MHz to 2155MHz scope (i.e.
The lower link frequency range of Band 4) in, antenna highest-gain (Peak Gain) is up to 5.7dBi.Thus may be used
Knowing, antenna assembly 50 can improve the high frequency antenna gain of antenna assembly 10 really.
From the foregoing, by the shape changing radiant body, antenna assembly 50 removes can be such as antenna assembly
The operation of 10, more can promote high frequency antenna gain, to promote antenna efficiency.Further, except changing
Become outside radiant body shape, separately can increase other auxiliary element, needed for meeting different system.Such as, sky
The antenna gain of line apparatus 50 improves about 3dB in the lower link frequency range of Band 4, but its upper and lower chain
The antenna gain of road frequency range is the most variant.In this case, localizer can be increased at antenna assembly 50.
Refer to the schematic diagram that Fig. 7 A to Fig. 7 E, Fig. 7 A is the embodiment of the present invention one antenna assembly 70,
And the part schematic diagram that Fig. 7 B to Fig. 7 E is antenna assembly 70.Antenna assembly 70 is traditional thread binding by the sky of Fig. 1
The antenna assembly 50 putting 10 and Fig. 5 A is derived, therefore similar elements is continued to use same-sign and represented.Antenna
It is that antenna assembly 70 relatively antenna assembly 50 adds finger at device 70 and antenna assembly 50 main difference
To device 700,702,704,706.In addition, antenna assembly 70 be operable in equally double frequency (as
First, second frequency band), and can be in high frequency band (such as the first frequency band) substantially in directivity and in low frequency
Frequency band (such as the second frequency band) is substantially in omni-directional.
Specifically, localizer 700,702,704,706 be respectively arranged at substrate 104 B face,
The D face of substrate 106, the A face of substrate 104, the C face of substrate 106, and respectively close to radiant body
The edge of RT1 '～RT4 '.Wherein, it should be noted that, Fig. 7 C and the B face that Fig. 7 E is substrate 104
And the front view in the D face of substrate 106, Fig. 7 A can be coordinated to know that localizer 700,702 is relative to spoke
The position of beam RT1 '～RT2 '.In other words, localizer 700 and 704 is just being arranged at substrate 104
Anti-two sides, and localizer 702 and 706 is arranged at the tow sides of substrate 106, this is for assembling convenience,
And it being not limited to this, localizer 700,704 may also set up in the same face of substrate 104, or localizer 702,
706 the same faces that may be disposed at substrate 106, and it arranges position and also can suitably adjust.Additionally, point to
The length of device 700,702,704,706 is about high frequency (Band4 as in previous embodiment) signal
Half-wavelength, and can suitably adjust, such as in this example, the length of localizer 700,702,704,706
Degree is more than high-frequency path length.
Operate in please continue to refer to Fig. 8 A to Fig. 8 E, Fig. 8 A, Fig. 8 B respectively antenna assembly 70
The S parameter schematic diagram of Band13 and Band4, wherein solid line represents (by radiant body RT1 ', RT3 ' institute
Form it) reflection loss (i.e. S11) analog result of the first dipole antenna, dotted line represents (by radiating
Body RT2 ', RT4 ' are formed it) reflection loss (i.e. S22) analog result of the second dipole antenna, and
Dotted line then represents transmission coefficient (i.e. S21, the expression isolation relative to the second dipole antenna of first dipole antenna
Degree) analog result (S21 of Fig. 8 A is beyond representing that scope is not shown).Fig. 8 C, Fig. 8 D are respectively
It it is the first dipole antenna field pattern analog result of operating in Band13 and Band4；Wherein, at Fig. 8 C
In, solid line represents that the first dipole antenna operates in the field pattern of 750MHz in Band13, and triangle line table
Show that the first dipole antenna operates in the field pattern of 780MHz in Band13；In Fig. 8 D, solid line represents
First dipole antenna operates in same polarization (Co-polarization) field pattern of 1740MHz in Band4,
Triangle line represents that the first dipole antenna operates in the same polarization field pattern of 2140MHz in Band4, dotted line table
Show that the first dipole antenna operates in heteropolar (Cross-polarization) field of 1740MHz in Band4
Type, square line represents that the first dipole antenna operates in the heteropolar field pattern of 2140MHz in Band4.Figure
8E, Fig. 8 F the respectively second dipole antenna operates in the field pattern analog result of Band13 and Band4,
Wherein, in Fig. 8 E, solid line represents that the second dipole antenna operates in the field pattern of 750MHz in Band13,
And triangle line represents that the second dipole antenna operates in the field pattern of 780MHz in Band13；In Fig. 8 F,
Dotted line represents that the second dipole antenna operates in the same polarization field pattern of 1740MHz in Band4, square line table
Showing that the second dipole antenna operates in the same polarization field pattern of 2140MHz in Band4, solid line represents that second is even
Pole antenna operation is the heteropolar field pattern of 1740MHz in Band4, and triangle line represents the second dipole antenna
Operate in the heteropolar field pattern of 2140MHz in Band4.
From Fig. 8 A and Fig. 8 B, antenna assembly 70 can correctly operate in Band13 and Band4,
And the isolation that first between dipole antenna and the second dipole antenna is up to more than 30dB, super at low frequency
Cross 40dB, therefore can correctly operate.From Fig. 8 C to Fig. 8 F, first, second dipole antenna operation
Substantially in omni-directional when Band13, and substantially in directivity when Band4；The more important thing is, the
One dipole antenna and the second dipole antenna 1710MHz to 1755MHz scope (i.e. Band's 4
Uplink frequency range) and the scope (i.e. the lower link frequency range of Band 4) of 2110MHz to 2155MHz
In, antenna highest-gain (Peak Gain) is all up more than 7dBi.It follows that compared to antenna
Device 50, antenna assembly 70 can improve the difference of high frequency antenna gain really.
Antenna assembly 50,70 can be radiated by change in order to the antenna assembly 10 that the embodiment of the present invention is described
Shape or increase localizer and reach different qualities, but, antenna assembly 10,50,70 is all up
Become dual frequency operation, and can in high frequency band substantially in directivity and in low-frequency band substantially in omni-directional.Remove
Outside this, those skilled in the art works as can suitably adjust previous embodiment according to different system demand,
And it is not limited to this.For example, refer to Fig. 9 A to Fig. 9 H, Fig. 9 A to Fig. 9 H and be respectively this
The schematic diagram of bright embodiment antenna assembly 900,902,904,906,908,910,912,914.
Antenna assembly 900,902,904,906,908,910,912,914 is all by the antenna assembly of Fig. 7 A
70 are derived, and difference is to change the reflecting plate pattern of antenna assembly 70, for the sake of clarity, and omits
Most of component symbol.From Fig. 9 A to Fig. 9 C, reflecting plate four edge break of antenna assembly 900
Rising, the reflecting plate of antenna assembly 902,904 is bilateral vertically to be turned up, therefore antenna assembly 900,902,904
The cross section of reflecting plate comprise at least one bending.From Fig. 9 D, Fig. 9 E, antenna assembly 906 anti-
Penetrating plate is arc, and the reflecting plate of antenna assembly 908 is arc and bilateral turns up, therefore antenna assembly 906,
The cross section of the reflecting plate of 908 comprises at least one segmental arc.From Fig. 9 F, Fig. 9 G, Fig. 9 H, antenna
The reflecting plate of device 910 forms a cavity, and double frequency cross dipole antenna is arranged substantially in cavity, sky
The reflecting plate of line apparatus 912,914 is that double sided taper is turned up.Antenna assembly 900,902,904,906,
908,910,912,914 requirement all meeting the present invention, in other words, if the reflecting plate of antenna assembly
The projection result being projected on a plane of reference along central shaft (CL) is substantially square, and double frequency cross dipole
The projection result that antenna is projected on this plane of reference along central shaft corresponds roughly to foursquare two diagonal, then
Control foursquare catercorner length more than 0.6 times of the signal wavelength corresponding to high frequency band and less than low
Again and again 0.35 times of the signal wavelength corresponding to band, and reflecting plate and the minimum distance of arbitrary high-frequency radiation part
Between 0.15 times and 0.25 times of the signal wavelength corresponding to high frequency band, i.e. may conform to the present invention
Requirement；Wherein, the above-mentioned plane of reference is perpendicular to reflecting plate 102 institute in the one side of central shaft, such as Fig. 1
The plane of reference is i.e. can be considered in plane.
Additionally, Figure 10 A, Figure 10 B are respectively the schematic diagram of embodiment of the present invention antenna assembly 11,12.
Antenna assembly 11,12 is all derived by the antenna assembly 70 of Fig. 7 A, and it is traditional thread binding that difference is to change sky
Put the localizer pattern of 70, for the sake of clarity, and eliminate major part component symbol.From Figure 10 A,
Compared to antenna assembly 70, an antenna assembly 11 wherein localizer changes single strip into, and it is by center
Axle (CL) extends towards two sides, and another set localizer then keeps identical with antenna assembly 70.And
In Figure 10 B, two localizers of antenna assembly 12 all change the form extended by central axial both sides into.My god
Line apparatus 11,12 is all up into dual frequency operation, and can be in high frequency band substantially in directivity and in low frequency
Frequency band is substantially in omni-directional.
In the prior art, duplexer generally need to be utilized to combine high and low frequency antenna, with realize operate in height,
The antenna assembly of low frequency.In comparison, the embodiment of the present invention is not required to duplexer, can realize operating in height,
The antenna assembly of low frequency；The more important thing is, for need to adjust aerial angle or point to the application of position in good time,
Such as domestic networking gear, according to the antenna assembly of the embodiment of the present invention, adjusting aerial angle or sensing
During position, owing to antenna assembly can maintain omni-directional in low-frequency band, therefore can reduce or avoid signal dead angle
Generation, can be used for maintain wireless transmission function, it is to avoid impact use situation.
In sum, the antenna assembly of the embodiment of the present invention is operable in double frequency, and can be big in high frequency band
Cause in directivity and in low-frequency band substantially in omni-directional, thus can promote efficiency of transmission.
The foregoing is only the preferred embodiments of the present invention, all impartial changes according to the claims in the present invention with
Modify, all should belong to the covering scope of the present invention.
Claims (9)
1. an antenna assembly, includes:
Double frequency cross dipole antenna, includes four radiant bodies, and each radiant body is by a central axial plane
Extend, and comprise the first Department of Radiation and the second Department of Radiation to receive and dispatch one first frequency band and one second frequency band respectively
Wireless signal, and each radiant body place plane and adjacent radiation body place plane are substantially in 90 degree；
And
Reflecting plate, is arranged at the side of this double frequency cross dipole antenna；
Wherein, by this reflecting plate along this central shaft be projected on one first projection result of a plane of reference substantially in
One square, is projected on one second projection of this plane of reference by this double frequency cross dipole antenna along this central shaft
Result corresponds roughly to this foursquare two diagonal, and this plane of reference is perpendicular to this central shaft；
Wherein, a mid frequency of this first frequency band is higher than a mid frequency of this second frequency band, and this is first years old
This foursquare pair of horns line length of projection result is more than this signal wavelength corresponding to the first frequency band
0.6 times and less than 0.35 times of this signal wavelength corresponding to the second frequency band, and this reflecting plate and this four spoke
The minimum distance of arbitrary first Department of Radiation of beam is between the signal wavelength corresponding to this first frequency band
Between 0.15 times and 0.25 times, make this double frequency cross dipole antenna in this first frequency band substantially in directivity also
In this second frequency band substantially in omni-directional.
2. antenna assembly as claimed in claim 1, wherein to comprise at least one curved in a cross section of this reflecting plate
Folding.
3. antenna assembly as claimed in claim 1, wherein a cross section of this reflecting plate comprises at least one arc
Shape section.
4. antenna assembly as claimed in claim 1, wherein this reflecting plate forms a cavity, and this double frequency is handed over
Fork dipole antenna is arranged in this cavity.
5. antenna assembly as claimed in claim 1, wherein each radiation of this double frequency cross dipole antenna
Body also includes a localizer, is used for strengthening this double frequency cross dipole antenna in the sensing of this first frequency band
Property.
6. antenna assembly as claimed in claim 5, this localizer of each of which radiant body is parallel to this
Second Department of Radiation, and with the distance of this second Department of Radiation less than the distance with this first Department of Radiation.
7. antenna assembly as claimed in claim 5, this localizer of each of which radiant body is in one first
Plane extends, and this plane that this first plane is extended with each radiant body is identical.
8. antenna assembly as claimed in claim 5, this localizer of each of which radiant body is in one first
Plane extends, and this plane that this first plane is extended from each radiant body is different.
9. antenna assembly as claimed in claim 5, the length phase of this localizer of each of which radiant body
About this first frequency band.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562143820P | 2015-04-07 | 2015-04-07 | |
| US62/143,820 | 2015-04-07 |
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|---|---|
| CN106207422A true CN106207422A (en) | 2016-12-07 |
| CN106207422B CN106207422B (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510379968.4A Active CN106207422B (en) | 2015-04-07 | 2015-07-02 | Antenna assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106207422B (en) |
| TW (1) | TWI552444B (en) |
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| CN109962341A (en) * | 2017-12-22 | 2019-07-02 | 网件公司 | Antenna structure and relevant building and application method |
| JP2020036098A (en) * | 2018-08-27 | 2020-03-05 | アルプスアルパイン株式会社 | Power conversion device |
| CN111800155A (en) * | 2019-04-08 | 2020-10-20 | 启碁科技股份有限公司 | Wireless device |
| WO2021178729A1 (en) * | 2020-03-05 | 2021-09-10 | Ixi Technology Holdings, Inc. | Filtering proximity antenna array |
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| TWM393048U (en) * | 2010-07-12 | 2010-11-21 | Dark Marketing Corp | Antenna using in a wireless transmission |
| TWI497815B (en) * | 2013-08-15 | 2015-08-21 | Wistron Neweb Corp | Cross type transmission module |
| TWI514662B (en) * | 2013-08-28 | 2015-12-21 | Wistron Neweb Corp | Cross type transmission module and assembling method thereof |
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| CN1432206A (en) * | 2000-03-31 | 2003-07-23 | 纳夫科姆技术公司 | Nested turnstile antenna |
| CN102025030A (en) * | 2009-09-23 | 2011-04-20 | 宏达国际电子股份有限公司 | Plane directional antenna |
| CN103794883A (en) * | 2013-03-28 | 2014-05-14 | 深圳光启创新技术有限公司 | Directional antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962341A (en) * | 2017-12-22 | 2019-07-02 | 网件公司 | Antenna structure and relevant building and application method |
| JP2020036098A (en) * | 2018-08-27 | 2020-03-05 | アルプスアルパイン株式会社 | Power conversion device |
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| CN111800155A (en) * | 2019-04-08 | 2020-10-20 | 启碁科技股份有限公司 | Wireless device |
| CN111800155B (en) * | 2019-04-08 | 2022-07-05 | 启碁科技股份有限公司 | Wireless device |
| WO2021178729A1 (en) * | 2020-03-05 | 2021-09-10 | Ixi Technology Holdings, Inc. | Filtering proximity antenna array |
| US11336027B2 (en) | 2020-03-05 | 2022-05-17 | Ixi Technology Holdings, Inc. | Filtering proximity antenna array |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106207422B (en) | 2018-12-11 |
| TW201637288A (en) | 2016-10-16 |
| TWI552444B (en) | 2016-10-01 |
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