CN106159447B - Smart antenna module and omnidirectional antenna - Google Patents
Smart antenna module and omnidirectional antenna Download PDFInfo
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- CN106159447B CN106159447B CN201510175089.XA CN201510175089A CN106159447B CN 106159447 B CN106159447 B CN 106159447B CN 201510175089 A CN201510175089 A CN 201510175089A CN 106159447 B CN106159447 B CN 106159447B
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Abstract
A kind of smart antenna module and omnidirectional antenna.The smart antenna module includes: an omnidirectional antenna；And an at least reflector element, an at least reflector element are used to adjust the radiation pattern of the omnidirectional antenna, wherein an at least reflector element includes: a reflecting part；And a switch, which is coupled between the reflecting part and a grounding parts of the omnidirectional antenna, is used to the reflecting part and the grounding parts are electrically connected or separate, to adjust the radiation pattern of the omnidirectional antenna according to a control signal.Smart antenna module of the invention is provided simultaneously with the function of omnidirectional radiation pattern and directional radiation field pattern, can be used as a switched beam antenna, achievees the purpose that improve common signal channel decline whereby and promotes the data throughout of smart antenna module.
Description
Technical field
It is espespecially a kind of by adjusting at least one reflection the present invention relates to a kind of smart antenna module and omnidirectional antenna
The ground state of unit adjusts the smart antenna module and omnidirectional antenna of radiation pattern.
Background technique
With the universalness of wireless communication technique, user increase the case where make common signal channel fail (co-channel
Fading) also all the more significant to the influence of radio communication quality.Common signal channel decline not only weakens the transmission of wireless communication device
Quality also will limit the service efficiency of communications band.Traditionally, smart antenna (smart antenna) can be used as common signal channel
The solution of decline, and smart antenna can be divided into adaptive antennas (adaptive antenna) and switched beam antenna
Two major classes such as (switched-beam antenna) are other.
Adaptive antennas can be by adjusting its radiation pattern automatically to obstruct interference signal, however, adaptive antennas needs
Relative complex radio frequency (Radio-frequency, RF) circuit is configured to carry out beam steering (beam steering), with reality
The adjustment of existing radiation pattern.In contrast, switched beam antenna only needs the relatively easy one group of switching switch of configuration to control wave
The switching of beam, therefore the hardware practicality and cost-effectiveness of switched beam antenna are relatively better than adaptive antennas.
In recent years, switched beam antenna, which has been supplied in, supports that WLAN standard IEEE 802.11b/g/n's is wireless
Communication device, such as wireless access point.In addition to this, with wireless communication technique continuous evolution, wireless communication device is configured
Antenna amount can increase.For example, WLAN standard IEEE 802.11n supports multiple-input and multiple-output
(Multi-input Multi-output, MIMO) communication technology, that is, relevant wireless communication device can be by multiple (or more
Group) antenna synchronous transmitting/receiving wireless signal, not increase bandwidth or total transmission power consume (Transmit Power
Expenditure in the case where), significantly increase the data throughout (Throughput) and transmitting range of system, Jin Eryou
Effect promotes the spectrum efficiency and transmission rate of wireless communication system, improves communication quality.
It can be seen from the above, to realize spatial multiplexing in MIMO function, diverse technologies, prerequisite must be taken
With multiple groups antenna, space is divided into many channels, and then provide mutiple antennas field pattern.When same electronic product is in the confined space
When lower configuration multiple groups antenna, primary demand in communication first is that these antenna be all it is independent, will not influence each other each other, and have
There is good isolation.However, Yao Tigao isolation between antennas maintains the number of multiple-input and multiple-output again simultaneously under the confined space
According to handling capacity, many design difficulties certainly will be increased.Therefore, how to design the antenna for meeting transmission demand, combine size and
Function, it has also become one of the target that industry is made great efforts.
Summary of the invention
Therefore, the main object of the present invention is to provide a kind of smart antenna module and omnidirectional antenna, can
Radiation pattern is adjusted by adjusting the ground state of an at least reflector element, to realize beam steering.
The present invention discloses a kind of smart antenna module, which includes: an omnidirectional antenna and at least
One reflector element；An at least reflector element is used to adjust the radiation pattern of the omnidirectional antenna, wherein at least one reflection
Unit includes: a reflecting part and a switch；The switch be coupled to the reflecting part and the omnidirectional antenna a grounding parts it
Between, it is used to the reflecting part and the grounding parts are electrically connected or separate, to adjust the omnidirectional antenna according to a control signal
Radiation pattern.
Invention additionally discloses a kind of omnidirectional antenna, the omnidirectional antenna include: a grounding parts, a feeding portion and
One irradiation unit；The feeding portion is electrically connected at a wireless signal；The irradiation unit is electrically connected at the feeding portion, for the nothing that resonates
Line signal, wherein the irradiation unit includes: a first support arm, which is electrically connected at the feeding portion, from the feeding portion court
One first direction extends；One second support arm, the second support arm are electrically connected at the first support arm, from the first support arm towards one second
Direction extends；And a third support arm, the third support arm are electrically connected between the second support arm and the grounding parts, the third
Support arm includes: one first bending；One first branch, first branch are electrically connected at the second support arm and first bending
Between, extend from the second support arm towards a third direction；And one second branch, second branch are electrically connected at first bending
And between the grounding parts, extend from the opposite direction of the first bending towards the first direction；One the 4th support arm, the 4th support arm electricity
Property be connected to the first support arm, from the first support arm towards the opposite direction of the second direction extend；And one the 5th support arm, the 5th
Support arm is electrically connected between the 4th support arm and the grounding parts, and the 5th support arm includes: one second bending；One third point
Branch, which is electrically connected between the 4th support arm and second bending, from the 4th support arm towards the third direction
Opposite direction extend；And one the 4th branch, the 4th branch are electrically connected between second bending and the grounding parts, from
The opposite direction of second bending towards the first direction extends；Wherein, which is mutually perpendicular to.
Smart antenna module of the invention is provided simultaneously with the function of omnidirectional radiation pattern and directional radiation field pattern,
It can be used as a switched beam antenna, achieve the purpose that improve common signal channel decline whereby and promote the data of smart antenna module
Handling capacity.
Detailed description of the invention
Fig. 1 is the schematic diagram of a smart antenna module of the embodiment of the present invention.
Fig. 2 is the schematic diagram of another smart antenna module of the embodiment of the present invention.
Fig. 3 is the schematic diagram of the omnidirectional antenna of Fig. 1 of the embodiment of the present invention.
Fig. 4 is the feed-in structure figure of the omnidirectional antenna of Fig. 1 of the embodiment of the present invention.
Fig. 5 is the schematic diagram of the reflector element of Fig. 1 of the embodiment of the present invention.
Fig. 6 is the equivalent circuit diagram of the reflector element of Fig. 1 of the embodiment of the present invention.
Fig. 7 is the schematic diagram of another smart antenna module of the embodiment of the present invention.
Fig. 8 is the schematic diagram of the omnidirectional antenna of Fig. 7 of the embodiment of the present invention.
Fig. 9 is the schematic diagram of the reflector element of Fig. 7 of the embodiment of the present invention.
Figure 10 is the feed-in structure figure of the omnidirectional antenna of Fig. 7 of the embodiment of the present invention.
Figure 11 depicts return consume of the smart antenna module in 5G frequency range of Fig. 1.
Figure 12 depicts return consume of the smart antenna module in 2.4G frequency range of Fig. 7.
Figure 13 is painted the smart antenna module of Fig. 1 in the radiation pattern figure of the x-y plane of 5G frequency range.
Figure 14 is painted the smart antenna module of Fig. 2 in the radiation pattern figure of the x-y plane of 5G frequency range.
Figure 15 is painted the smart antenna module of Fig. 7 in the radiation pattern figure of the x-z-plane of 2.4G frequency range.
Primary clustering symbol description:
1,2,7 smart antenna module
10,70 omnidirectional antenna
11,12,13,21,22,23,24,71,72,73,74 reflector element
14 substrates
15,25,75,76 bracket
X, y, z direction
FP feeding portion
100,700 irradiation unit
110,710 reflecting part
101,102,112,113, support arm
701、702、703、704、705、712、713
7031,7032,7051,7052 branch
706,707 open circuit stub
111,7033,7053 bending
RF_sig wireless signal
CT_sig controls signal
GND, GND_L2 grounding parts
141_L1、142_ L2,143_L1,144_L2 connection pad
FST, FST_1, GST_1, GST_2 slot
GV is grounded perforation
SV signal perforation
SW switch
D1, D2 diode
CK radio frequency choke component
L1, L2, L3 length
Specific embodiment
Smart antenna module of the invention has two kinds of operation modes, is omnidirectional (omni-directional) mould
Formula and directive property (directional) mode.When smart antenna module operates in omnidirectional mode, can make it have complete
Directional radiation field pattern, to receive and dispatch the wireless signal from full horizontal plane；On the other hand, when learn interesting wireless signal come
When the direction in source, smart antenna module of the invention operates in directional mode, can make it have directional radiation field pattern, and refer to
The main wave beam pointing direction of tropism radiation pattern is also adjusted to adaptability be approximately towards the direction in wireless signal source, by
To realize beam steering.In this way, which smart antenna module of the invention is provided simultaneously with omnidirectional radiation pattern and direction
Property radiation pattern function, can be used as a switched beam antenna, achieve the purpose that whereby improve common signal channel decline and promotion
The data throughout of smart antenna module.
Specifically, referring to FIG. 1, it is the schematic diagram of a smart antenna module 1 of the embodiment of the present invention.Smart antenna
Module 1 can be incorporated into the electronic device with wireless communication function, such as wireless access point, personal computer or notebook type
Computer etc., and above-mentioned electronic device may be configured with multiple smart antenna modules 1, to support multiple input multiple output communications technology.
Wireless signal processing module and/or other signal processing units in electronic device can be coupled to smart antenna module 1, for producing
Raw at least one control signal is to smart antenna module 1, therefore smart antenna module 1 can adjust its radiation according to the control signal
Field pattern, to realize beam steering.
In structure, smart antenna module 1 includes an omnidirectional antenna 10, reflector element 11,12 and 13, a substrate
14 and a bracket 15.Grounding parts GND (not being plotted in Fig. 1) is formed in substrate 14.Reflector element 11,12 and 13 is respectively intended to root
According to corresponding control signal, it is electrically connected to grounding parts GND or separation grounding parts GND, to adjust the spoke of omnidirectional antenna 10
Penetrate field pattern.Omnidirectional antenna 10, reflector element 11,12,13 and bracket 15 be set on the first face of substrate 14 (for example,
Surface).Bracket 15 is coupled to omnidirectional antenna 10 and reflector element 11,12,13, for fix omnidirectional antenna 10 and
Reflector element 11,12,13.
Operationally, when smart antenna module 1 operates in an omnidirectional mode, all reflector elements 11,12,13
Suspension joint (floating) state of presentation, the radiation pattern of omnidirectional antenna 10 is an omnidirectional field pattern at this time.Conversely, working as intelligence
When energy Anneta module 1 operates in a directional mode, one of reflector element 11,12,13 is electrically connected to grounding parts GND, this
When one of reflector element 11,12,13 can be considered a part of omnidirectional antenna 10, for reflecting omnidirectional antenna 10
Omnidirectional field pattern, make omnidirectional antenna 10 radiation pattern present a directive property field pattern.Wherein, the one of directive property field pattern
Main wave beam pointing direction is roughly parallel to from the reflector element of grounding parts GND is electrically connected to towards omnidirectional antenna 10
Direction.By taking reflector element 11 as an example, when the ground connection of reflector element 11 and reflector element 12,13 suspension joint, reflector element 11 can be considered
A part of omnidirectional antenna 10, for reflecting the radiation pattern of omnidirectional antenna 10, directive property field pattern is main at this time
Beam position direction is roughly parallel to the direction from reflector element 11 towards omnidirectional antenna 10 (i.e. the direction x is reversed).
In this way, one of reflector element 11,12,13 is electrically connected to by grounding parts GND by control signal, it can
Make the radiation pattern of omnidirectional antenna 10 that directive property field pattern be presented, there are three types of different wherein main wave beam pointing direction can have
Pointing direction.In the preferred embodiment, reflector element 11,12,13 is equably set to around omnidirectional antenna 10, and adjacent
The reflector element of setting, as having a center of circle between reflector element 11 and 12,12 and 13 or 11 and 13, with omnidirectional antenna 10
Angle, central angle are equal to 360/N, and wherein N is the quantity of reflector element.In the embodiment in figure 1, quantity N is 3, central angle 120
Degree.Thus, it is supposed that reflector element 11,12,13 is respectively arranged at around omnidirectional antenna 10 in the case that the direction x is 0 degree
0 degree, 120 degree and 240 degree orientation.When reflector element 11 is grounded, main wave beam pointing direction is roughly parallel to single from reflection
Member 11 is towards the direction (i.e. 180 degree direction) of omnidirectional antenna 10；When reflector element 12 is grounded, main wave beam pointing direction
It is roughly parallel to the direction (i.e. 300 degree of directions) from reflector element 12 towards omnidirectional antenna 10；When reflector element 13 is grounded
When, main wave beam pointing direction is roughly parallel to direction (the i.e. 60 degree sides from reflector element 13 towards omnidirectional antenna 10
To).
In other words, smart antenna module 1 of the invention can control reflector element 11,12,13 and grounding parts GND connection and
Discrete state, to adjust the radiation pattern of omnidirectional antenna 10.When smart antenna module 1 operates in omnidirectional mode,
Discrete state is presented in all reflector elements 11,12,13 and grounding parts GND, and omnidirectional antenna 10 is made to have omnidirectional spoke
Penetrate field pattern；On the other hand, when learning the direction in interesting wireless signal source, smart antenna module 1 is operable in direction
Connection status is presented with grounding parts GND in sexual norm, one of reflector element 11,12,13, has omnidirectional antenna 10 and refers to
Tropism radiation pattern.In this way, which smart antenna module 1 of the invention is provided simultaneously with omnidirectional radiation pattern and directive property
The function of radiation pattern, can be used as a switched beam antenna, achievees the purpose that improve common signal channel decline whereby and promotes intelligence
The data throughout of energy Anneta module.
It is noted that the smart antenna module 1 of Fig. 1 is the embodiment of the present invention, it is all to meet above-mentioned framework and correspondence
The Anneta module of mode of operation all belongs to the scope of the present invention, and is not limited to the above embodiments.For example, work as smart antenna module
1 when operating in directional mode, and the adjacent pairs in reflector element 11,12,13 can be electrically connected to grounding parts GND, make all referring to
The radiation pattern of directional antenna 10 is a directive property field pattern, and wherein the main wave beam pointing direction of directive property field pattern is roughly parallel to
From the intermediate point for adjacent two reflector element for being electrically connected to grounding parts GND towards the direction of omnidirectional antenna 10.Such one
Come, the direction of beam steering can more add flexibility.For example, main wave beam pointing direction is substantially when reflector element 11,12 is grounded
It is parallel to from the intermediate point of two adjacent reflector elements 11,12 towards the direction (i.e. 240 degree of directions) of omnidirectional antenna 10；When
When reflector element 12,13 is grounded, main wave beam pointing direction is roughly parallel to the intermediate point from two adjacent reflector elements 12,13
Towards the direction (i.e. 0 degree of direction) of omnidirectional antenna 10；When reflector element 11,13 is grounded, main wave beam pointing direction is big
Cause is parallel to from the intermediate point of two adjacent reflector elements 11,13 towards the direction (i.e. 120 degree of directions) of omnidirectional antenna 10.
The ground state that main wave beam pointing direction corresponds to reflector element can be found in following table 1.
Therefore, by adjusting the ground state of reflector element, smart antenna module 1 of the invention can have six kinds it is different
Main wave beam pointing direction, can so be such that beam steering is more flexible.
In addition to this, adjustment is visually actually needed in the relative position of reflector element 11,12,13 and omnidirectional antenna 10,
And it is not limited to the embodiment of Fig. 1.For example, the central angle between reflector element 11,12,13 and omnidirectional antenna 10 can be any
Angle；Alternatively, one of reflector element 11,12,13 or more persons can be away from or approaching omnidirectional antennas 10.The number of reflector element
It is unlimited to measure N, at least one, depending on practical application request.In the preferred embodiment, the quantity N of reflector element is 3 or 4.It please join
Fig. 2 is examined, is the schematic diagram of another smart antenna module 2 of the embodiment of the present invention.The difference of smart antenna module 1 and 2 is
The quantity N of the reflector element of smart antenna module 2 is 4.
In structure, smart antenna module 2 includes reflector element 21,22,23 and 24, it is assumed that the case where direction x is 0 degree
Under, reflector element 21,22,23 and 24 is respectively arranged at 0 degree around omnidirectional antenna 10,90 degree, 180 degree and 270 degree
Orientation.One bracket 25 of smart antenna module 2 is coupled to omnidirectional antenna 10 and reflector element 21,22,23 and 24, with strong
Change the stability of omnidirectional antenna 10 and reflector element 21,22,23,24.
Operationally, when smart antenna module 2 operates in omnidirectional mode, all reflector element 21,22,23,
24 are presented floating, and omnidirectional antenna 10 can be made to have omnidirectional radiation pattern.On the other hand, work as smart antenna module
2 when operating in directional mode, and the main wave beam pointing direction of omnidirectional antenna 10 can have eight kinds of different pointing directions,
Can so beam steering be made to be more flexible.The ground state that main wave beam pointing direction corresponds to reflector element can be found in such as following table
Lattice 2.
Therefore, by adjusting the quantity of the ground state of reflector element and increase reflector element, intelligent day of the invention
Wire module can have a variety of different main wave beam pointing directions, can so beam steering be made to be more flexible.
Further, referring to FIG. 3, it is the schematic diagram of the omnidirectional antenna 10 of the embodiment of the present invention.Such as Fig. 3 institute
Show, omnidirectional antenna 10 includes a feeding portion FP and an irradiation unit 100.Irradiation unit 100 is electrically connected at feeding portion FP,
For the wireless signal RF_sig that resonates.Irradiation unit 100 includes support arm 101 and 102.Support arm 101 is electrically connected at feeding portion
FP, extends from feeding portion FP towards the direction z, and support arm 102 is electrically connected at support arm 101, extends in the x-direction.Wherein, omnidirectional day
Line 10 is a T shape unipole antenna or a folding type unipole antenna (bended-monopole), and is vertical polarization.Wherein, x, y
And the direction z is mutually perpendicular to.
Referring to FIG. 4, its feed-in structure perspective view for the omnidirectional antenna 10 of the embodiment of the present invention.The of substrate 14
A connection pad 141_L1 and grounding parts GND is formed on (i.e. surface) on one side, irradiation unit 100 can be set to substrate by welding
14 the first face.An a connection pad 142_L2 and grounding parts GND_L2 is formed on the second face (i.e. bottom surface) of substrate 14.Connection pad
142_L2 can be used as feeding portion FP, be used to feed-in wireless signal RF_sig.Multiple ground connection perforations are formed with inside substrate 14
(ground via) GV and multiple signal perforations (signal via) SV, ground connection perforation GV are used to be electrically connected grounding parts GND
And GND_L2, signal perforation SV are used to be electrically connected connection pad 141_L1 and 142_L2.In addition, one can be formed in substrate 14
Slot FST_1, irradiation unit 100 can be inserted into slot FST_1, to fix irradiation unit 100.
Referring to FIG. 5, its perspective view for the reflector element 11 of the embodiment of the present invention.It note that the reflection list that Fig. 1 is painted
The structure for the reflector element 21,22,23,24 that 11,12,13 and Fig. 2 of member is painted is completely the same, is only with reflector element 11 herein
Example explanation.As shown in figure 5, reflector element 11 includes a reflecting part 110 and a switch SW.Switch SW is coupled to reflecting part
Between 110 and grounding parts GND, it is used to be electrically connected or separate reflecting part 110 and grounding parts according to a control signal CT_sig
GND (and GND_L2), to adjust the radiation pattern of omnidirectional antenna 10.Wherein, control signal CT_sig can be universal
Input and output (General Purpose I/O, GPIO) signal, by electronic device wireless signal processing module and/or its
Produced by his signal processing unit, to control the ground state of reflector element 11.
Reflecting part 110 includes bending 111 and support arm 112 and 113.Support arm 112 be coupled to switch and bending 111 it
Between, extend from switch SW towards the direction z.One end of support arm 113 is electrically connected at bending 111, and the other end of support arm 113 is open circuit,
Extend (i.e. the direction x) from bending 111 along from omnidirectional antenna 10 towards the direction of reflecting part 110.However it is without being limited thereto, at it
In his embodiment, the open circuit support arm 112 of reflecting part also can from bending 111 along reflecting part 110 towards the side of omnidirectional antenna 10
To extension (i.e. the opposite direction in the direction x).
A connection pad 143_L1 and grounding parts GND is formed on first face of substrate 14, reflecting part 110 can pass through welding
It is set to the first face of substrate.A connection pad 144_L2 and grounding parts GND_L2 is formed on second face of substrate 14.Signal passes through
Hole SV is used to be electrically connected connection pad 143_L1 and 144_L2.In addition, ground connection perforation GV is formed in around switch SW, it is used to electrically
Connect grounding parts GND and GND_L2.Switch SW is preferably provided on the second face of substrate 14, is arranged relative to irradiation unit 100
In on the first face of substrate 14, be conducive to manufacture configured in this way.
Referring to FIG. 6, its equivalent circuit diagram for the reflector element 11 of the embodiment of the present invention.Switch SW is coupled to reflecting part
Between 110 and grounding parts GND, it is used to be electrically connected or separate reflecting part 110 and grounding parts according to control signal CT_sig
GND, to adjust the radiation pattern of omnidirectional antenna 10.
Switch SW includes an at least switch block (the present embodiment is by taking diode D1, D2 as an example) and a radio frequency choke component
(Choke)CK.The anode of the diode D1 and D2 of the present embodiment are coupled to reflecting part 110, the cathode coupling of diode D1 and D2
It is complete to increase due to promoting the electric conductivity between reflecting part 110 and grounding parts GND using two diodes in grounding parts GND
The directive property (directivity) of the main wave beam of oriented antenna 10.In other embodiments, switch SW also may include three
(or more) or single switch block.Switch block is preferably PIN- diode (P-intrinsic-N Diode) or any
It can be used as the radio frequency changeover module of switch, such as PN junction rectifier (PN Diode), transistor or MEMS
(Microelectromechanical Systems, MEMS) etc..One end of the radio frequency choke component CK of the present embodiment is coupled to
Signal CT_sig is controlled, the other end is coupled to the anode and reflecting part 110 of diode D1 and D2, for preventing control signal
CT_sig influences the characteristic and stability of integrated antenna, and prevents the noise current of CT_sig from flowing to grounding parts GND and reflection list
Member.And radio frequency choke component CK can prevent the signal of grounding parts GND and reflecting part 110 from flowing to control signal CT_sig.
Operationally, when controlling signal CT_sig is high potential, diode D1, D2 are switched on simultaneously, by reflecting part
110 are electrically connected to grounding parts GND；When controlling signal CT_sig is low potential, diode D1, D2 are closed simultaneously, will
Reflecting part 110 separates grounding parts GND.Therefore, control signal CT_sig can control the ground state of reflecting part 110, whole to adjust
The radiation pattern of body antenna.
Referring to FIG. 7, its schematic diagram for another smart antenna module 7 of the embodiment of the present invention.Smart antenna module 7 with
The framework and mode of operation of the smart antenna module 2 of Fig. 2 are similar, and it is single to be similarly an omnidirectional antenna four reflections of collocation
Member, therefore the main wave beam pointing direction of the omnidirectional antenna of smart antenna module 7 can have eight kinds of different pointing directions.
Smart antenna module 7 is that the shape of omnidirectional antenna and reflector element is different from the difference of smart antenna module 2, wherein intelligence
In addition energy Anneta module 7 increases by a bracket and carrys out fixation reflex unit, with the stability of reinforcing reflex unit.
As shown in fig. 7, smart antenna module 7 includes an omnidirectional antenna 70, reflector element 71,72,73,74, base
Plate 14 and bracket 75,76.Each reflector element 71,72,73,74 is used to be electrically connected to and connect according to corresponding control signal
Ground portion GND or separation grounding parts GND, to adjust the radiation pattern of omnidirectional antenna 70.Bracket 75 is connected to omnidirectional day
Line 70, for fixing omnidirectional antenna 70, to strengthen its stability.Bracket 76 is used to fixation reflex unit 71,72,73,74,
To strengthen its stability.
Referring to FIG. 8, its schematic diagram for the omnidirectional antenna 70 of the embodiment of the present invention.As shown in figure 8, omnidirectional
Antenna 70 includes feeding portion FP and an irradiation unit 700.Irradiation unit 700 is electrically connected at feeding portion FP, wireless for resonating
Signal RF_sig.Irradiation unit 700 includes support arm 701,702,703,704 and 705.Support arm 703 and 705 is electrically connected to ground connection
Portion GND, in the present embodiment, omnidirectional antenna 70 can be considered a pair of grounding pin unipole antenna (dual shorted-pin
Monopole), the antenna of this type can harmonic carcellation frequency, make its dominant resonant frequency radiation efficiency optimize.
In structure, support arm 701 is electrically connected at feeding portion FP, extends from feeding portion FP towards the direction z.Support arm 702 is electrically
It is connected to support arm 701, is extended from support arm 701 towards the opposite direction in the direction x.Support arm 703 is electrically connected at support arm 702 and grounding parts
Between GND.Support arm 703 includes branch 7031,7032 and bending 7033.Branch 7031 be electrically connected at support arm 702 and
Between bending 7033, extend from support arm 702 towards the direction y.Branch 7032 be electrically connected at bending 7033 and grounding parts GND it
Between, extend from bending 7033 towards the opposite direction in the direction z.
Support arm 704 is electrically connected at support arm 701, extends from support arm 701 towards the direction x.Support arm 705 is electrically connected at support arm
Between 704 and grounding parts GND, and support arm 705 includes branch 7051,7052 and bending 7053.Branch 7051 electrically connects
It is connected between support arm 704 and bending 7053, extends from support arm 704 towards the opposite direction in the direction y.Branch 7052 is electrically connected at curved
It rolls between 7053 and grounding parts GND, extends from bending 7053 towards the opposite direction in the direction z.
The combination of the branch 7031 of support arm 702 and support arm 703 constitutes U-shape and support arm 704 of the opening towards the direction y
With the U-shape for combining the opposite direction for constituting opening towards the direction y of the branch 7051 of support arm 705；The branch 7032 of support arm 703 is in
Now be open towards the direction x U-shape and support arm 705 branch 7052 present opening towards the direction x opposite direction U-shape.
Support arm 701 has a length L1, and support arm 702 and 704 is respectively provided with a length L2, and the summation of length L1 and L2 are substantially
For the quarter-wave of wireless signal RF_sig.Support arm 703 and 705 is respectively provided with a length L3, and length L3 is substantially wireless
The quarter-wave of signal RF_sig.Therefore, the total length of support arm 701,702 and 703 substantially wireless signal RF_sig
Half-wavelength, and the total length of support arm 701, the 704 and 705 substantially half-wavelength of wireless signal RF_sig.
It is worth noting that, irradiation unit 700 can additionally comprise open circuit stub (Open-stub) 706 and 707, for being promoted
The radiation efficiency and Antenna Impedance Matching of the resonance of irradiation unit 700 wireless signal RF_sig.Open circuit stub 706 is electrically connected at support arm
702 and 703 junction, open circuit stub 707 are electrically connected at the junction of support arm 704 and 705.In other words, open a way stub 706 and
707 may be disposed at the quarter-wave strong point of about wireless signal RF_sig, to change the radio-frequency current of quarter-wave strong point
Size can so reduce return consume (return loss), promote the radiation effect of the resonance of irradiation unit 700 wireless signal RF_sig
Rate, and resistance difference of antenna operation in the state of omni-directional and directive property can be reduced.
Referring to FIG. 9, its schematic diagram for the reflector element 71 of the embodiment of the present invention.It note that the reflection list that Fig. 7 is painted
The structure of member 71,72,73 and 74 is completely the same, only illustrates by taking reflector element 71 as an example herein.As shown in figure 9, reflector element 71
It include a reflecting part 710 and switch SW.Reflecting part 710 includes support arm 712 and 713.Support arm 712 is coupled to switch SW,
Extend from switch SW towards the direction z.Support arm 713 is electrically connected at support arm 712, along omnidirectional antenna 70 towards reflector element 71
Vertical direction extends (direction y).Wherein, reflecting part 710 is substantially in a T shape.
Referring to FIG. 10, its feed-in structure figure for the omnidirectional antenna 70 of the embodiment of the present invention.Omnidirectional antenna
10 are with the difference of 70 feed-in structure, and slot FST, GST_1 and GST_2 are formed in substrate 14.The support arm of irradiation unit 700
In 701 pluggable slot FST, and support arm 703 and 705 can be inserted into respectively in slot GST_1 and GST_2, to fix support arm respectively
701,703 and 705.
Figure 11 is please referred to, 5G frequency range of the smart antenna module 1 in IEEE 802.11a/n/ac standard of Fig. 1 is depicted
The return consume of (4.9~5.95GHz).Smart antenna module 1 operates the return consume in omnidirectional mode with heavy line table
Show.Smart antenna module 1 operate in directional mode, the return consume that reflector element 11,12 and 13 is grounded respectively respectively with
Fine line, dotted line and thick dashed line indicate.As shown in figure 11, smart antenna module 1 4.9GHz return consume be generally lower than-
4.905dB (32.32%) is generally lower than -10.26dB (9.41%) in the return consume of 5.8GHz.
Figure 12 is please referred to, return consumption of the smart antenna module 7 in 2.4G frequency range (2.4~2.5GHz) of Fig. 7 is depicted
Damage.The operation of smart antenna module 7 is indicated in the return consume of omnidirectional mode with heavy line.The operation of smart antenna module 7 exists
When directional mode, the return consume that reflector element 71,72,73 and 74 is grounded respectively is respectively with fine line, fine dotted line, thick dashed line
And choice refreshments line indicates.As shown in figure 12, smart antenna module 1 is generally lower than -10.45dB in the return consume of 2.4GHz
(9.01%), -12.36dB (5.81%) is generally lower than in the return consume of 2.5GHz.
Figure 13 is please referred to, is painted smart antenna module 1 in the radiation pattern figure of the x-y plane of 5G frequency range.Smart antenna
The operation of module 1 is indicated in the radiation pattern of omnidirectional mode with heavy line.Smart antenna module 1 is operated in directional mode
When, the radiation pattern that reflector element 11,12 and 13 is grounded respectively is indicated respectively with fine line, dotted line and thick dashed line.Such as Figure 13
Shown, when reflector element 11,12 and 13 is grounded respectively, the radiation pattern of smart antenna module 1 is respectively close to 180 degree, 300
Degree and 60 degree of direction have maximum value, this is the pointing direction of main wave beam.
Figure 14 is please referred to, is painted smart antenna module 2 in the radiation pattern figure of the x-y plane of 5G frequency range.Smart antenna
The operation of module 2 is indicated in the radiation pattern of omnidirectional mode with heavy line.Smart antenna module 2 is operated in directional mode
When, the radiation pattern that reflector element 21,22,23 and 24 is grounded respectively is respectively with fine line, fine dotted line, choice refreshments line and thick dashed line
It indicates.As shown in figure 14, when reflector element 21,22,23 and 24 is grounded respectively, the radiation pattern of smart antenna module 2 is distinguished
There is maximum value close to 180 degree, 270 degree, the directions of 0 degree and 90 degree, this is the pointing direction of main wave beam.
Figure 15 is please referred to, is painted smart antenna module 7 in the radiation pattern figure of the x-z-plane of 2.4G frequency range.Intelligent day
The operation of wire module 7 is indicated in the radiation pattern of omnidirectional mode with heavy line.Smart antenna module 7 is operated in directional mode
When, the radiation pattern that reflector element 71,72,73 and 74 is grounded respectively is respectively with fine line, fine dotted line, thick dashed line and choice refreshments line table
Show.As shown in Figure 15, in the direction x and its opposite direction, (namely individual main wave beams refer to when reflector element 71 and 73 is grounded respectively
To direction) there is maximum value, indicate that energy is concentrated in this direction, that is, the directive property of antenna.
In conclusion smart antenna module of the invention can control the ground state of an at least reflector element, it is complete to adjust
The radiation pattern of oriented antenna.When smart antenna module operates in omnidirectional mode, all reflector elements present floating
State is connect, makes omnidirectional antenna that there is omnidirectional radiation pattern；On the other hand, when learning interesting wireless signal source
Direction when, smart antenna module is operable in directional mode, and at least ground state is presented in one of reflector element, makes
Omnidirectional antenna has directional radiation field pattern.In this way, which smart antenna module of the invention is provided simultaneously with omnidirectional
The function of radiation pattern and directional radiation field pattern, can be used as a switched beam antenna, and reach improves common signal channel whereby declines
The data throughout of the purpose and promotion smart antenna module moved back.
The foregoing is merely presently preferred embodiments of the present invention, made by the range of all claims according to the present invention etc.
With variation and modification, it is all covered by the present invention.
Claims (9)
1. a kind of smart antenna module, the smart antenna module include:
One omnidirectional antenna；And
An at least reflector element, an at least reflector element are used to adjust the radiation pattern of the omnidirectional antenna, and wherein this is extremely
A reflector element includes: less
One reflecting part；And
One switch, the switch are coupled between the reflecting part and a grounding parts of the omnidirectional antenna, are used to according to a control
Signal is electrically connected or separates the reflecting part and the grounding parts, to adjust the radiation pattern of the omnidirectional antenna；
Wherein the omnidirectional antenna includes:
The grounding parts；
One feeding portion, the feeding portion are electrically connected at a wireless signal；And
One irradiation unit, the irradiation unit are electrically connected at the feeding portion and the grounding parts, for the wireless signal that resonates, the radiation
Portion includes:
One first support arm, the first support arm are electrically connected at the feeding portion, extend from the feeding portion towards a first direction；
One second support arm, the second support arm are electrically connected at the first support arm, extend from the first support arm towards a second direction；With
And
One third support arm, the third support arm are electrically connected between the second support arm and the grounding parts, which includes:
One first bending；
One first branch, which is electrically connected between the second support arm and first bending, from the second support arm
Extend towards a third direction；And
One second branch, second branch are electrically connected between first bending and the grounding parts, from the first bending court
The opposite direction of the first direction extends；
One the 4th support arm, the 4th support arm are electrically connected at the first support arm, from the first support arm towards the negative side of the second direction
To extension；And
One the 5th support arm, the 5th support arm are electrically connected between the 4th support arm and the grounding parts, and the 5th support arm includes:
One second bending；
One third branch, which is electrically connected between the 4th support arm and second bending, from the 4th support arm
Opposite direction towards the third direction extends；And
One the 4th branch, the 4th branch are electrically connected between second bending and the grounding parts, from the second bending court
The opposite direction of the first direction extends；
Wherein, first, second and third direction is perpendicular to one another.
2. smart antenna module as described in claim 1, wherein the first support arm has one first length, this second, the 4th
Support arm is respectively provided with one second length, a quarter of the summation substantially wireless signal of first length and second length
Wavelength；The third, the 5th support arm are respectively provided with a third length, a quarter of the third length substantially wireless signal
Wavelength.
3. smart antenna module as described in claim 1, further includes:
One first open circuit stub, the first open circuit stub are electrically connected at the junction of the second support arm Yu the third support arm；With
And
One second open circuit stub, the second open circuit stub are electrically connected at the junction of the 4th support arm and the 5th support arm.
4. smart antenna module as described in claim 1, wherein first branch of the second support arm and the third support arm
Combination constitutes opening towards the U-shape of the third direction and the group of the third branch of the 4th support arm and the 5th support arm
Close the U-shape for the opposite direction for constituting opening towards the third direction, opening is presented towards should in second branch of the third support arm
U-shaped of the opening towards the second direction is presented in 4th branch of the U-shape of the opposite direction of second direction and the 5th support arm
Shape.
5. smart antenna module as described in claim 1, wherein the reflecting part includes:
One the 6th support arm, the 6th support arm are coupled to the switch, extend from the switch towards the first direction；And
One the 7th support arm, the 7th support arm are electrically connected at the 6th support arm, along the omnidirectional antenna towards the reflector element
Vertical direction extend；
Wherein the reflecting part is substantially t-shaped.
6. a kind of omnidirectional antenna, the omnidirectional antenna include:
One grounding parts；
One feeding portion, the feeding portion are electrically connected at a wireless signal；And
One irradiation unit, the irradiation unit are electrically connected at the feeding portion, and for the wireless signal that resonates, wherein the irradiation unit includes:
One first support arm, the first support arm are electrically connected at the feeding portion, extend from the feeding portion towards a first direction；
One second support arm, the second support arm are electrically connected at the first support arm, extend from the first support arm towards a second direction；With
And
One third support arm, the third support arm are electrically connected between the second support arm and the grounding parts, which includes:
One first bending；
One first branch, which is electrically connected between the second support arm and first bending, from the second support arm
Extend towards a third direction；And
One second branch, second branch are electrically connected between first bending and the grounding parts, from the first bending court
The opposite direction of the first direction extends；
One the 4th support arm, the 4th support arm are electrically connected at the first support arm, from the first support arm towards the negative side of the second direction
To extension；And
One the 5th support arm, the 5th support arm are electrically connected between the 4th support arm and the grounding parts, and the 5th support arm includes:
One second bending；
One third branch, which is electrically connected between the 4th support arm and second bending, from the 4th support arm
Opposite direction towards the third direction extends；And
One the 4th branch, the 4th branch are electrically connected between second bending and the grounding parts, from the second bending court
The opposite direction of the first direction extends；
Wherein, which is mutually perpendicular to.
7. full directional antenna as claimed in claim 6, wherein the first support arm has one first length, this second, the 4th
Arm is respectively provided with one second length, the quarter-wave of the summation substantially wireless signal of first length and second length
It is long；The third, the 5th support arm are respectively provided with a third length, the quarter-wave of the third length substantially wireless signal
It is long.
8. full directional antenna as claimed in claim 6, further includes:
One first open circuit stub, the first open circuit stub are electrically connected at the junction of the second support arm Yu the third support arm；With
And
One second open circuit stub, the second open circuit stub are electrically connected at the junction of the 4th support arm and the 5th support arm.
9. full directional antenna as claimed in claim 6, the wherein group of first branch of the second support arm and the third support arm
It closes and constitutes the combination of opening towards the U-shape of the third direction and the third branch of the 4th support arm and the 5th support arm
Constitute opening towards the third direction opposite direction U-shape, second branch of the third support arm present opening towards this
U-shaped of the opening towards the second direction is presented in 4th branch of the U-shape of the opposite direction in two directions and the 5th support arm
Shape.
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| CN201510175089.XA CN106159447B (en) | 2015-04-14 | 2015-04-14 | Smart antenna module and omnidirectional antenna |
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| CN201510175089.XA CN106159447B (en) | 2015-04-14 | 2015-04-14 | Smart antenna module and omnidirectional antenna |
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| CN106159447B true CN106159447B (en) | 2019-06-25 |
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| CN106908701B (en) * | 2017-03-10 | 2020-06-26 | 中国电力科学研究院 | Space discharge positioning array and method for determining space discharge source position |
| CN110809837B (en) * | 2017-06-16 | 2022-04-29 | 雅马哈株式会社 | Wireless communication device |
| CN107681260A (en) * | 2017-08-29 | 2018-02-09 | 中山赛思普电子科技有限公司 | A kind of antenna system for the detection of high-voltage electric power system temperature wireless |
| CN110034400A (en) * | 2018-01-05 | 2019-07-19 | 台达电子工业股份有限公司 | Antenna assembly and antenna system |
| CN108987949B (en) * | 2018-07-26 | 2021-10-15 | 中国电建集团成都勘测设计研究院有限公司 | Antenna system capable of reconstructing radiation mode |
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| US6618016B1 (en) * | 2001-02-21 | 2003-09-09 | Bae Systems Aerospace Inc. | Eight-element anti-jam aircraft GPS antennas |
| JP2005094198A (en) * | 2003-09-16 | 2005-04-07 | Denso Corp | Antenna assembly |
| CN1677749B (en) * | 2004-03-29 | 2012-04-18 | 王氏电-光公司 | Broadband/multi-band circular array antenna |
| US7180465B2 (en) * | 2004-08-13 | 2007-02-20 | Interdigital Technology Corporation | Compact smart antenna for wireless applications and associated methods |
| CN2865036Y (en) * | 2005-06-01 | 2007-01-31 | 上海正旭数码科技有限公司 | Small-sized polarizing compatible omnitenna |
| TWM323698U (en) * | 2007-04-24 | 2007-12-11 | Univ Cheng Shiu | Omnidirectional dual-band with high gain antenna |
| CN102142611B (en) * | 2010-02-01 | 2014-02-12 | 深圳富泰宏精密工业有限公司 | Dipole antenna |
| CN102005643B (en) * | 2010-10-14 | 2013-06-19 | 厦门大学 | Three-frequency Koch fractal ring mirror image dipole antenna |
| CN201918514U (en) * | 2010-10-22 | 2011-08-03 | 惠州Tcl移动通信有限公司 | Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure |
| CN102570037A (en) * | 2010-12-29 | 2012-07-11 | 深圳富泰宏精密工业有限公司 | Multifrequency antenna |
| CN104103912B (en) * | 2013-04-11 | 2018-04-24 | 深圳富泰宏精密工业有限公司 | Antenna module |
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