CN203300810U - Circular-polarization base station antenna and base station - Google Patents
Circular-polarization base station antenna and base station Download PDFInfo
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- CN203300810U CN203300810U CN2013203295320U CN201320329532U CN203300810U CN 203300810 U CN203300810 U CN 203300810U CN 2013203295320 U CN2013203295320 U CN 2013203295320U CN 201320329532 U CN201320329532 U CN 201320329532U CN 203300810 U CN203300810 U CN 203300810U
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Abstract
The utility model provides a circular-polarization base station antenna and a base station. The circular-polarization base station antenna comprises a signal distribution unit, a first feed network, a second feed network and at least one antenna unit which comprises a first linear-polarization oscillator and a second linear-polarization orthogonal to each other, wherein the signal distribution unit divides a first input signal into a first signal and a second signal, and divides a second input signal into a third signal and a fourth signal; the first feed network respectively divides the first signal into at least one fifth signal and the third signal into at least one sixth signal and inputs the fifth and sixth signals to the first linear-polarization oscillator; and the second feed network respectively divides the second signal into at least one seventh signal and the fourth signal into at least one eighth signal and inputs the seventh and eighth to the second linear-polarization oscillator. The base station comprises the circular-polarization base station antenna. The circular-polarization base station and the base station, provided by the utility model, emit two circular polarized waves orthogonal to each other, so that each terminal antenna oscillator receives the two circular polarized waves with the same energy, and downlink MIMO (Multiple Input Multiple output) effect is better.
Description
Technical field
The utility model relates to communication technical field, relates in particular to a kind of circular polarization antenna for base station and base station.
Background technology
Application multiple-input and multiple-output (Multiple-Input Multiple-Output is called for short MIMO) technology realizes that the lifting of capability of wireless communication system is the important method that solves the customer service demand.In order to realize MIMO, can dispose respectively many antennas in base station side and end side, realize simultaneously the transmission of a plurality of data flow under identical radio frequency environment.
In prior art, antenna for base station generally adopts ± and 45 ° of dual polarized antennas transmit and receive the linear polarization signal, and terminal antenna generally adopts the vertical/horizontal dual polarized antenna to transmit and receive the linear polarization signal.Fig. 1 is the MIMO transmission system schematic diagram of prior art Bipolarization antenna for base station, as shown in Figure 1, the linear polarization signal of base station side+45 ° poliarizing antenna oscillator 11 emissions is received by end side vertical polarized antenna oscillator 13 and end side horizontally-polarized antenna oscillator 14 respectively, the linear polarization signal of 11 while of base station side+45 ° poliarizing antenna oscillator receiving terminal side vertical polarized antenna oscillator 13 and 14 emissions of end side horizontally-polarized antenna oscillator; The linear polarization signal of base station side-45 ° poliarizing antenna oscillator 12 emissions is received by end side vertical polarized antenna oscillator 13 and end side horizontally-polarized antenna oscillator 14 respectively, the linear polarization signal of 12 while of base station side-45 ° poliarizing antenna oscillator receiving terminal side vertical polarized antenna oscillator 13 and 14 emissions of end side horizontally-polarized antenna oscillator.Fig. 2 is the structural representation of prior art Bipolarization antenna for base station, as shown in Figure 2, base station side+45 ° poliarizing antenna oscillator 11 is electrically connected to by+45 ° of polarization feeding networks 21 and+45 ° of polarization ports 22, and base station side-45 ° poliarizing antenna oscillator 12 is electrically connected to by-45 ° of polarization feeding networks 23 and-45 ° of polarization ports 24.
But there is following defect in prior art: in the process of downlink, under the unconspicuous environment of multipath effect (spacious zone as less in barrier), the two-route wire polarized wave of base station ± 45 ° dual polarized antenna emission is when the incoming terminal antenna, still keeping to a great extent original polarised direction, therefore the energy size of the two-route wire polarized wave that receives of each terminal antenna oscillator differs larger, causes descending MIMO poor effect.
The utility model content
The utility model provides a kind of circular polarization antenna for base station and base station, in order to solve the problem of the descending MIMO poor effect that exists in prior art.
On the one hand, the utility model provides a kind of circular polarization antenna for base station, comprise: signal Dispatching Unit, the first feeding network, the second feeding network and at least one antenna element, each described antenna element comprise First Line polarization oscillator and the second linear polarization oscillator of quadrature, wherein:
Described signal Dispatching Unit is electrically connected to described the first feeding network and described the second feeding network respectively, and described the first feeding network is electrically connected to described First Line polarization oscillator, and described the second feeding network is electrically connected to described the second linear polarization oscillator;
Described signal Dispatching Unit is divided into the first input signal to be sent that amplitude equates and first signal and the secondary signal of 90 ° of phase phasic differences, and described first signal is inputed to described the first feeding network, described secondary signal is inputed to described the second feeding network; The second input signal to be sent is divided into that amplitude equates and the 3rd signal and the 4th signal of 90 ° of phase phasic differences, and described the 3rd signal is inputed to described the first feeding network, described the 4th signal is inputed to described the second feeding network; Described the first input signal and described the second input signal amplitude equate and phase place equates, described first signal and described the 3rd signal phase differ 90 °, and described secondary signal and described the 4th signal phase differ 90 °;
Described the first feeding network is divided at least one the 5th signal with described first signal, and each described the 5th signal is inputed to described First Line polarization oscillator in a described antenna element; Described the 3rd signal is divided at least one the 6th signal, and each described the 6th signal is inputed to described First Line polarization oscillator in a described antenna element;
Described the second feeding network is divided at least one the 7th signal with described secondary signal, and each described the 7th signal is inputed to described the second linear polarization oscillator in a described antenna element; Described the 4th signal is divided at least one the 8th signal, and each described the 8th signal is inputed to described the second linear polarization oscillator in a described antenna element;
Described the 5th signal of inputting in same antenna element equates with described the 7th signal amplitude and 90 ° of phase phasic differences, and described the 6th signal equates with described the 8th signal amplitude and 90 ° of phase phasic differences;
Described First Line polarization oscillator described the 5th signal of emission and described the 6th signal; Described the second linear polarization oscillator described the 7th signal of emission and described the 8th signal.
Circular polarization antenna for base station as above, also comprise: signal receiving unit; Described signal receiving unit is electrically connected to described the first feeding network and described the second feeding network respectively;
The 3rd input signal that described First Line polarization oscillator will receive inputs to described the first feeding network; The 4th input signal that described the second linear polarization oscillator will receive inputs to described the second feeding network;
Described the 3rd input signal that described the first feeding network receives the described First Line polarization oscillator in each described antenna element closes Lu Weidi nine signals and inputs to described signal receiving unit;
Described the 4th input signal that described the second feeding network receives described the second linear polarization oscillator in each described antenna element closes Lu Weidi ten signals and inputs to described signal receiving unit;
Described signal receiving unit is exported respectively described the 9th signal and described the tenth signal.
In circular polarization antenna for base station as above, described signal Dispatching Unit comprises: first signal sending module, secondary signal sending module, the 3rd signal transmitting module, the 4th signal transmitting module and 3db electric bridge;
Described first signal sending module, described secondary signal sending module, described the 3rd signal transmitting module, described the 4th signal transmitting module are electrically connected to described 3db electric bridge respectively, described the 3rd signal transmitting module is electrically connected to described the first feeding network, and described the 4th signal transmitting module is electrically connected to described the second feeding network;
Described first signal sending module inputs to described 3db electric bridge with described the first input signal; Described secondary signal sending module inputs to described 3db electric bridge with described the second input signal;
Described 3db electric bridge is divided into described first signal and described secondary signal with described the first input signal, and described first signal is inputed to described the 3rd signal transmitting module, and described secondary signal is inputed to described the 4th signal transmitting module; Described the second input signal is divided into described the 3rd signal and described the 4th signal, and described the 3rd signal is inputed to described the 3rd signal transmitting module, described the 4th signal is inputed to described the 4th signal transmitting module;
Described the 3rd signal transmitting module inputs to described the first feeding network with described first signal and described the 3rd signal; Described the 4th signal transmitting module inputs to described the second feeding network with described secondary signal and described the 4th signal.
In circular polarization antenna for base station as above, described signal receiving unit comprises: first signal receiver module, secondary signal receiver module, the 3rd signal receiving module and the 4th signal receiving module;
Described first signal receiver module is electrically connected to described the first feeding network and described the 3rd signal receiving module respectively; Described secondary signal receiver module is electrically connected to described the second feeding network and described the 4th signal receiving module respectively;
Described first signal receiver module receives described the 9th signal of described the first feeding network input, and described the 9th signal is inputed to described the 3rd signal receiving module; Described the 3rd described the 9th signal of signal receiving module output;
Described secondary signal receiver module receives described the tenth signal of described the second feeding network input, and described the tenth signal is inputed to described the 4th signal receiving module; Described the 4th described the tenth signal of signal receiving module output.
In circular polarization antenna for base station as above, described the first feeding network comprises: the first power splitter and at least one first phase shifter;
Described the first phase shifter is electrically connected to described First Line polarization oscillator and described the first power splitter respectively, and described the first power splitter is electrically connected to described signal Dispatching Unit;
Described the first power splitter is divided at least one the 11 signal with described first signal, and each described the 11 signal is inputed to described first phase shifter; Described the 3rd signal is divided at least one the tenth binary signal, and each described the tenth binary signal is inputed to described first phase shifter;
Described the first phase shifter carries out phase shift to described the 11 signal to be processed and to obtain described the 5th signal and input to described First Line polarization oscillator; Described the tenth binary signal is carried out phase shift to be processed and to obtain described the 6th signal and input to described First Line polarization oscillator;
Described the second feeding network comprises: the second power splitter and at least one second phase shifter;
Described the second phase shifter is electrically connected to described the second linear polarization oscillator and described the second power splitter respectively, and described the second power splitter is electrically connected to described signal Dispatching Unit;
Described the second power splitter is divided at least one the 13 signal with described secondary signal, and each described the 13 signal is inputed to described second phase shifter; Described the 4th signal is divided at least one the 14 signal, and each described the 14 signal is inputed to described second phase shifter;
Described the second phase shifter carries out phase shift to described the 13 signal to be processed and to obtain described the 7th signal and input to described the second linear polarization oscillator; Described the 14 signal is carried out phase shift to be processed and to obtain described the 8th signal and input to described the second linear polarization oscillator.
In circular polarization antenna for base station as above, described the first feeding network also comprises: the 3rd power splitter and at least one the 3rd phase shifter;
Described the 3rd phase shifter is electrically connected to described First Line polarization oscillator and described the 3rd power splitter respectively; Described the 3rd power splitter is electrically connected to described signal receiving unit;
Described the 3rd phase shifter receives described the 3rd input signal of described First Line polarization oscillator input, and described the 3rd input signal is carried out phase shift process and obtain the 15 signal and input to described the 3rd power splitter;
It is that described the 9th signal inputs to described signal receiving unit that described the 3rd power splitter closes road with described the 15 signal of each described the 3rd phase shifter input.
In circular polarization antenna for base station as above, described the second feeding network also comprises: the 4th power splitter and at least one the 4th phase shifter;
Described the 4th phase shifter is electrically connected to described the second linear polarization oscillator and described the 4th power splitter respectively, and described the 4th power splitter is electrically connected to described signal receiving unit;
Described the 4th phase shifter receives described the 4th input signal of described the second linear polarization oscillator input, and described the 4th input signal is carried out phase shift process and obtain the 16 signal and input to described the 4th power splitter;
It is that described the tenth signal inputs to described signal receiving unit that described the 4th power splitter closes road with described the 16 signal of each described the 4th phase shifter input.
In circular polarization antenna for base station as above, described First Line polarization oscillator is+45 ° of linear polarization oscillators, and described the second linear polarization oscillator is-45 ° of linear polarization oscillators; Perhaps,
Described First Line polarization oscillator is horizontal line polarization oscillator, and described the second linear polarization oscillator is vertical line polarization oscillator.
On the other hand, the utility model provides a kind of base station, comprising: baseband processing unit, RF processing unit and circular polarization antenna for base station as above; Described RF processing unit is electrically connected to the signal Dispatching Unit in described baseband processing unit and described circular polarization antenna for base station respectively.
In base station as above, described RF processing unit is electrically connected to the signal receiving unit in described circular polarization antenna for base station.
Circular polarization antenna for base station and base station that the utility model provides, in the process of downlink, differ the 5th signal and the 6th signal of 90 ° by the First Line oscillator transmitter, phase that polarizes, differ the 7th signal and the 8th signal of 90 ° by the second linear polarization oscillator transmitter, phase, and the 5th signal equates with the 7th signal amplitude and 90 ° of phase phasic differences, form the left-hand circular polarization ripple, the 6th signal equates with the 8th signal amplitude and 90 ° of phase phasic differences, formation right-handed circular polarization ripple.Even left-hand circular polarization ripple and right-handed circular polarization ripple are under the unconspicuous environment of multipath effect, during the incoming terminal antenna, the probability that is deflected on any one direction is also identical, therefore the energy size of two circularly polarised waves receiving of each terminal antenna oscillator is also identical, and descending MIMO effect is better.
Description of drawings
Fig. 1 is the MIMO transmission system schematic diagram of prior art Bipolarization antenna for base station;
Fig. 2 is the structural representation of prior art Bipolarization antenna for base station;
Fig. 3 is the electromagnetic electric field intensity schematic diagrames of the row of two under rectangular coordinate system;
The structural representation of the embodiment of circular polarization antenna for base station that Fig. 4 provides for the utility model;
The MIMO transmission system schematic diagram of the circular polarization antenna for base station downlink that provides embodiment illustrated in fig. 4 is provided Fig. 5;
The structural representation of another embodiment of circular polarization antenna for base station that Fig. 6 provides for the utility model;
The MIMO transmission system schematic diagram of the circular polarization antenna for base station uplink receiving that provides embodiment illustrated in fig. 6 is provided Fig. 7;
The structural representation of another embodiment of circular polarization antenna for base station that Fig. 8 provides for the utility model;
The structural representation of the 3db electric bridge in the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Fig. 9;
The structural representation of the duplexer in the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Figure 10;
The structural representation of a kind of feasible pattern of the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Figure 11;
The structural representation of the feeding network in the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Figure 12;
The structural representation of the embodiment in base station that Figure 13 provides for the utility model.
Embodiment
, for better explanation the technical solution of the utility model, first the formation condition of the circularly polarised wave of antenna transmission is done and is simply introduced:
The polarization of antenna is an important parameter of antenna performance, refers to the track of the end points of electromagnetic wave electric field intensity, and the direction of rotation of the electric field intensity of looking along the direction of propagation.The polarization of antenna is divided into three kinds of linear polarization, circular polarization and elliptical polarizations.Linear polarization and circular polarization are the elliptically polarized special cases, and circular polarization is divided into again left-hand circular polarization and the right-handed circular polarization of quadrature, and elliptically polarised wave can be decomposed into two circularly polarised waves that rotation direction is opposite.
Fig. 3 is the electromagnetic electric field intensity schematic diagrames of the row of two under rectangular coordinate system.As shown in Figure 3, suppose in rectangular coordinate system have two row electromagnetic wave edge+Z directions to propagate, their electric field intensity is respectively E
1(t) and E
1(t), corresponding phase angle is respectively j
1And j
2, E
1(t) component on x, y direction of principal axis is respectively E
1xAnd E
1y, E
2(t) component on x, y direction of principal axis is respectively E
2xAnd E
2yThe angular frequency that represents two electric field intensitys with w, with X(t), Y(t) component of resultant vector on x, y direction of principal axis of two electric field intensitys of expression, X(t), Y(t) expression formula be:
X(t)=E
1xcos(wt+j
1)+E
2xcos(wt+j
2)
Y(t)=E
1ycos(wt+j
1)+E
2ycos(wt+j
2)
Launch and arrange with trigonometric function:
AX
2(t)+2BX(t)Y(t)+CY
2(t)+F=0
Wherein, A=E
1y 2+ E
2y 2+ 2E
1yE
2yCos (j
1-j
2)
C=E
1x 2+E
2x 2+2E
1xE
2xcos(j
1-j
2)
Can find out, following formula is a vague generalization elliptic equation.Work as E
1(t)=E
1x=E, E
2(t)=E
2y=E, E
1y=E
2x=0,
The time, but the following formula abbreviation is:
X
2(t)+Y
2(t)=E
2
This is the equation of a circle of a standard.Namely when two electric field intensitys in space mutually vertical, amplitude equate and during 90 ° of phase phasic differences, two row electromagnetic waves can synthesize circularly polarised wave.In like manner, when identical or opposite, two row electromagnetic waves can synthesize line polarization wave when the two electromagnetic electric field intensitys of row.The formation condition that therefore can obtain circularly polarised wave is as follows:
(1) the two electromagnetic electric field intensity of row must be mutually vertical in space;
(2) the two electromagnetic electric field intensity amplitudes of row must equate;
(3) the two electromagnetic electric field intensity phase places of row must differ 90 °.
Below by specific embodiment and accompanying drawing, the technical solution of the utility model is described in further detail.
The structural representation of the embodiment of circular polarization antenna for base station that Fig. 4 provides for the utility model.As shown in Figure 4, this circular polarization antenna for base station can comprise: signal Dispatching Unit 41, the first feeding network 42, the second feeding network 43 and at least one antenna element 44, each antenna element 44 comprises First Line polarization oscillator 45 and the second linear polarization oscillator 46 of quadrature, wherein:
The first feeding network 42 is divided at least one the 5th signal with first signal, and each the 5th signal is inputed to a First Line polarization oscillator 45 in antenna element 44; The 3rd signal is divided at least one the 6th signal, and each the 6th signal is inputed to a First Line polarization oscillator 45 in antenna element 44;
The second feeding network 43 is divided at least one the 7th signal with secondary signal, and each the 7th signal is inputed to the second linear polarization oscillator 46 in an antenna element 44; The 4th signal is divided at least one the 8th signal, and each the 8th signal is inputed to the second linear polarization oscillator 46 in an antenna element 44;
In same antenna element 44, the 5th signal of input equates with the 7th signal amplitude and 90 ° of phase phasic differences, the 6th signal equates with the 8th signal amplitude and 90 ° of phase phasic differences, the 5th signal and the 6th signal phase differ 90 °, and the 7th signal and the 8th signal phase differ 90 °;
First Line polarization oscillator 45 emission the 5th signal and the 6th signals; The second linear polarization oscillator 46 emission the 7th signal and the 8th signals.
Concrete, the circular polarization antenna for base station that the present embodiment provides can be realized the downlink of left-handed/right-handed circular polarization ripple, below take amplitude as A, phase place is that the first input signal to be sent and second input signal of 0 ° is that example describes:
Signal Dispatching Unit 41 will be A from the amplitude of the first port 47 inputs, phase place be first input signal of 0 ° be divided into that amplitude equates and the first signal of 90 ° of phase phasic differences (for example amplitude is A/2, phase place is 0 °) and secondary signal (for example amplitude is A/2, phase place is 90 °), and with amplitude, be A/2, phase place is that the first signal of 0 ° inputs to the first feeding network 42, with amplitude, is A/2, and phase place is that the secondary signal of 90 ° inputs to the second feeding network 43.Signal Dispatching Unit 41 will be A from the amplitude of the second port 48 inputs, phase place be second input signal of 0 ° be divided into that amplitude equates and the 3rd signal of 90 ° of phase phasic differences (for example amplitude is A/2, phase place is 90 °) and the 4th signal (for example amplitude is A/2, phase place is 0 °), and with amplitude, be A/2, phase place is that the 3rd signal of 90 ° inputs to the first feeding network 42, with amplitude, is A/2, and phase place is that the 4th signal of 0 ° inputs to the second feeding network 43.Need to prove, the first signal and the 3rd signal that input to the first feeding network 42 differ 90 ° herein, are in order to guarantee the irrelevance of this two paths of signals at the first feeding network 42, to be independent of each other; Equally, the secondary signal and the 4th signal that input to the second feeding network 43 also differ 90 °, are in order to guarantee the irrelevance of this two paths of signals at the second feeding network 43, to be independent of each other.
The first feeding network 42 is A/2 with amplitude, phase place is that the first signal of 0 ° is divided into the 5th signal that equates (for example 4) with antenna element 44 quantity, and each the 5th signal is inputed in First Line polarization oscillator 45 in corresponding antenna element 44 and launches; The second feeding network 43 is A/2 with amplitude, phase place is that the secondary signal of 90 ° is divided into the 7th signal that equates (for example 4) with antenna element 44 quantity, and each the 7th signal is inputed in the second linear polarization oscillator 46 in corresponding antenna element 44 and launches.Need to prove herein, in same antenna element 44, the 5th signal that inputs to First Line polarization oscillator 45 equates with the 7th signal amplitude that inputs to the second linear polarization oscillator 46 and 90 ° of phase phasic differences, is in order to guarantee that the 5th signal and the 7th signal can form circularly polarised wave and launch.The amplitude and the phase place that input to each the 5th signal of First Line polarization oscillator 45 are required to determine by the vertical plane figuration, generally the amplitude of each the 5th signal and phase place are all unequal, the amplitude and the phase place that input to each the 7th signal of the second linear polarization oscillator 46 are also required to determine by the vertical plane figuration, generally the amplitude of each the 7th signal and phase place are also all unequal, guaranteeing has appropriate angle of inclination between the beam position of circularly polarised wave of each antenna element emission and level ground, and base station can be set up effectively and be connected with terminal.
Same, the first feeding network 42 is A/2 with amplitude, phase place is that the 3rd signal of 90 ° is divided into the 6th signal that equates (for example 4) with antenna element 44 quantity, and each the 6th signal is inputed in First Line polarization oscillator 45 in corresponding antenna element 44 and launches; The second feeding network 43 is A/2 with amplitude, phase place is that the 4th signal of 0 ° is divided into the 8th signal that equates (for example 4) with antenna element 44 quantity, and each the 8th signal is inputed in the second linear polarization oscillator 46 in corresponding antenna element 44 and launches.Same, in same antenna element 44, the 6th signal that inputs to First Line polarization oscillator 45 equates with the 8th signal amplitude that inputs to the second linear polarization oscillator 46 and 90 ° of phase phasic differences, guarantees that the 6th signal and the 8th signal can form circularly polarised wave and launch.Same, the amplitude and the phase place that input to each the 6th signal of First Line polarization oscillator 45 are also required to determine by the vertical plane figuration, generally the amplitude of each the 6th signal and phase place are also all unequal, the amplitude and the phase place that input to each the 8th signal of the second linear polarization oscillator 46 are also required to determine by the vertical plane figuration, generally the amplitude of each the 8th signal and phase place are also all unequal, guaranteeing has appropriate angle of inclination between the beam position of circularly polarised wave of each antenna element emission and level ground, and base station can be set up effectively and be connected with terminal.
And in same antenna element 44: the 5th signal and the 6th signal phase that input to First Line polarization oscillator 45 differ 90 °, are in order to guarantee the 5th signal and the 6th signal irrelevance at First Line polarization oscillator 45, to be independent of each other; Equally, the 7th signal and the 8th signal phase that input to the second linear polarization oscillator 46 differ 90 °, are in order to guarantee that the 7th signal and the 8th signal, in the irrelevance of the second linear polarization oscillator 46, are independent of each other; Guarantee simultaneously the circularly polarised wave of the 5th signal and the 7th signal formation in this antenna element, circularly polarised wave quadrature with the 6th signal in this antenna element and the 8th signal formation, namely one is the left-hand circular polarization ripple, one is the right-handed circular polarization ripple, guarantee the irrelevance of two circularly polarised waves that each antenna element is launched, be independent of each other.
Need to prove, in the present embodiment, in antenna element 44, the First Line of quadrature polarization oscillator 45 and the second linear polarization oscillator 46 specifically can be respectively+45 ° of linear polarization oscillators and-45 ° of linear polarization oscillators, also can be respectively horizontal line polarization oscillator and vertical line polarization oscillator.
Left-hand circular polarization in the present embodiment and right-handed circular polarization in addition, ,+45 ° of linear polarizations are all relative with-45 ° of linear polarization directions.
The MIMO transmission system schematic diagram of the circular polarization antenna for base station downlink that provides embodiment illustrated in fig. 4 is provided Fig. 5.As shown in Figure 5, base station side is received by end side vertical polarized antenna oscillator 13 and end side horizontally-polarized antenna oscillator 14 respectively after propagating deflection by the shake left-hand circular polarization ripple of molecular circular polarized antenna 51 emissions of the linear polarized antenna of quadrature, and the right-handed circular polarization ripple of emission is received by end side vertical polarized antenna oscillator 13 and end side horizontally-polarized antenna oscillator 14 respectively after propagating deflection.
The circular polarization antenna for base station that the present embodiment provides, in the process of downlink, differ the 5th signal and the 6th signal of 90 ° by the First Line oscillator transmitter, phase that polarizes, differ the 7th signal and the 8th signal of 90 ° by the second linear polarization oscillator transmitter, phase, and the 5th signal equates with the 7th signal amplitude and 90 ° of phase phasic differences, form the left-hand circular polarization ripple, the 6th signal equates with the 8th signal amplitude and 90 ° of phase phasic differences, formation right-handed circular polarization ripple.Even left-hand circular polarization ripple and right-handed circular polarization ripple are under the unconspicuous environment of multipath effect, during the incoming terminal antenna, the probability that is deflected on any one direction is also identical, therefore the energy size of two circularly polarised waves receiving of each terminal antenna oscillator is also identical, and descending MIMO effect is better.
The structural representation of another embodiment of circular polarization antenna for base station that Fig. 6 provides for the utility model.As shown in Figure 6, this circular polarization antenna for base station on basis embodiment illustrated in fig. 4, can also comprise: signal receiving unit 61; Signal receiving unit 61 is electrically connected to the first feeding network 42 and the second feeding network 43 respectively;
The 3rd input signal that First Line polarization oscillator 45 will receive inputs to the first feeding network 42; The 4th input signal that the second linear polarization oscillator 46 will receive inputs to the second feeding network 43;
The 3rd input signal that the first feeding network 42 receives the polarization of the First Line in each antenna element 44 oscillator 45 closes Lu Weidi nine signals and inputs to signal receiving unit 61;
The 4th input signal that the second feeding network 43 receives the second linear polarization oscillator 46 in each antenna element 44 closes Lu Weidi ten signals and inputs to signal receiving unit 61;
Signal receiving unit 61 is exported respectively the 9th signal and the tenth signal.
Concrete, the circular polarization antenna for base station that the present embodiment provides is left-handed except realizing/downlink of right-handed circular polarization ripple, can also realize the uplink receiving of line polarization wave, the uplink receiving process of line polarization wave is specific as follows:
The line polarization wave of the First Line polarization oscillator 45 receiving terminal side antennas in each antenna element 44 (comprising vertical line polarization oscillator and horizontal line polarization oscillator) emission is forming in communication process after deflection the 3rd input signal, and the 3rd input signal is inputed to the first feeding network 42, the 3rd input signal that equates (for example 4) with antenna element 44 quantity that the first feeding network 42 will receive closes Lu Weidi nine signals and inputs to signal receiving unit 61, and signal receiving unit 61 is exported the 9th signal by the first port 47.The line polarization wave of the second linear polarization oscillator 46 receiving terminal side antenna transmissions in each antenna element 44 is forming in communication process after deflection the 4th input signal, and the 4th input signal is inputed to the second feeding network 43, the 4th input signal that equates (for example 4) with antenna element 44 quantity that the second feeding network 43 will receive closes Lu Weidi ten signals and inputs to signal receiving unit 61, and signal receiving unit 61 is exported the tenth signal by the second port 48.
The MIMO transmission system schematic diagram of the circular polarization antenna for base station uplink receiving that provides embodiment illustrated in fig. 6 is provided Fig. 7.As shown in Figure 7, the line polarization wave of end side vertical polarized antenna oscillator 13 emission after propagating deflection respectively by in the First Line of base station side quadrature polarization oscillator 45(Fig. 7 take+45 ° of linear polarization oscillators as example) and second linear polarization oscillator 46(Fig. 7 in take-45 ° of linear polarization oscillators as example) receive, the line polarization wave of end side horizontally-polarized antenna oscillator 14 emissions after propagating deflection respectively by the First Line of base station side quadrature polarization oscillator 45 and the second linear polarization oscillator 46 receptions.
The circular polarization antenna for base station that the present embodiment provides, in the process of downlink, differ the 5th signal and the 6th signal of 90 ° by the First Line oscillator transmitter, phase that polarizes, differ the 7th signal and the 8th signal of 90 ° by the second linear polarization oscillator transmitter, phase, and the 5th signal equates with the 7th signal amplitude and 90 ° of phase phasic differences, form the left-hand circular polarization ripple, the 6th signal equates with the 8th signal amplitude and 90 ° of phase phasic differences, formation right-handed circular polarization ripple.Even left-hand circular polarization ripple and right-handed circular polarization ripple are under the unconspicuous environment of multipath effect, during the incoming terminal antenna, the probability that is deflected on any one direction is also identical, therefore the energy size of two circularly polarised waves receiving of each terminal antenna oscillator is also identical, and descending MIMO effect is better.In the process of uplink receiving, by the First Line line polarization wave of oscillator receiving terminal side antenna (comprising vertical line polarization oscillator and horizontal line polarization oscillator) emission forming in communication process after deflection the 3rd input signal that polarizes, line polarization wave by the second linear polarization oscillator receiving terminal side antenna (comprising vertical line polarization oscillator and horizontal line polarization oscillator) emission, at the 4th input signal that forms after deflection in communication process, has guaranteed not reduce existing Uplink MIMO effect.
The structural representation of another embodiment of circular polarization antenna for base station that Fig. 8 provides for the utility model.As shown in Figure 8, the signal Dispatching Unit 41 in the circular polarization antenna for base station that provides embodiment illustrated in fig. 6 specifically can comprise: first signal sending module 81, secondary signal sending module 82, the 3rd signal transmitting module 83, the 4th signal transmitting module 84 and 3db electric bridge 85; First signal sending module 81, secondary signal sending module 82, the 3rd signal transmitting module 83, the 4th signal transmitting module 84 are electrically connected to 3db electric bridge 85 respectively, the 3rd signal transmitting module 83 is electrically connected to the first feeding network 42, and the 4th signal transmitting module 84 is electrically connected to the second feeding network 43;
First signal sending module 81 inputs to 3db electric bridge 85 with the first input signal; Secondary signal sending module 82 inputs to 3db electric bridge 85 with the second input signal;
3db electric bridge 85 is divided into first signal and secondary signal with the first input signal, and first signal is inputed to the 3rd signal transmitting module 83, and secondary signal is inputed to the 4th signal transmitting module 84; The second input signal is divided into the 3rd signal and the 4th signal, and the 3rd signal is inputed to the 3rd signal transmitting module 83, the 4th signal is inputed to the 4th signal transmitting module 84;
The 3rd signal transmitting module 83 inputs to the first feeding network 42 with first signal and the 3rd signal; The 4th signal transmitting module 84 inputs to the second feeding network 43 with secondary signal and the 4th signal.
Concrete, the first signal sending module 81 in the present embodiment, secondary signal sending module 82, the 3rd signal transmitting module 83 and the 4th signal transmitting module 84, be specifically as follows directional filter, directional coupler or duplexer etc.if directional filter or directional coupler, the input of first signal sending module 81 is used for receiving the first input signal, the output of first signal sending module 81 is electrically connected to the first input end of 3db electric bridge 85, the input of secondary signal sending module 82 is used for receiving the second input signal, the output of secondary signal sending module 82 is electrically connected to the second input of 3db electric bridge 85, the input of the 3rd signal transmitting module 83 is electrically connected to the first output of 3db electric bridge 85, the output of the 3rd signal transmitting module 83 is electrically connected to the first feeding network 42, the input of the 4th signal transmitting module 84 is electrically connected to the second output of 3db electric bridge 85, the output of the 4th signal transmitting module 84 is electrically connected to the second feeding network 43.if duplexer, the common port of first signal sending module 81 is used for receiving the first input signal, the transmitting terminal of first signal sending module 81 is electrically connected to the first input end of 3db electric bridge 85, the common port of secondary signal sending module 82 is used for receiving the second input signal, the transmitting terminal of secondary signal sending module 82 is electrically connected to the second input of 3db electric bridge 85, the transmitting terminal of the 3rd signal transmitting module 83 is electrically connected to the first output of 3db electric bridge 85, the common port of the 3rd signal transmitting module 83 is electrically connected to the first feeding network 42, the transmitting terminal of the 4th signal transmitting module 84 is electrically connected to the second output of 3db electric bridge 85, the common port of the 4th signal transmitting module 84 is electrically connected to the second feeding network 43.
Below still take amplitude as A, phase place is that the first input signal to be sent and second input signal of 0 ° is that example describes:
First signal sending module 81 is A with amplitude, and phase place is that first input signal of 0 ° inputs to 3db electric bridge 85.3db electric bridge 85 is A with amplitude, phase place be first input signal of 0 ° be divided into that amplitude equates and the first signal of 90 ° of phase phasic differences (for example amplitude is A/2, phase place is 0 °) and secondary signal (for example amplitude is A/2, phase place is 90 °), and with amplitude, be A/2, phase place is that the first signal of 0 ° inputs to the 3rd signal transmitting module 83, with amplitude, is A/2, and phase place is that the secondary signal of 90 ° inputs to the 4th signal transmitting module 84.
Secondary signal sending module 82 is A with amplitude, and phase place is that second input signal of 90 ° inputs to 3db electric bridge 85.3db electric bridge 85 is A with amplitude, phase place be second input signal of 90 ° be divided into that amplitude equates and the 3rd signal of 90 ° of phase phasic differences (for example amplitude is A/2, phase place is 90 °) and the 4th signal (for example amplitude is A/2, phase place is 0 °), and with amplitude, be A/2, phase place is that the 3rd signal of 90 ° inputs to the 3rd signal transmitting module 83, with amplitude, is A/2, and phase place is that the 4th signal of 0 ° inputs to the 4th signal transmitting module 84.
The 3rd signal transmitting module 83 is A/2 with amplitude, and phase place is that first signal and the amplitude of 0 ° is A/2, and phase place is that the 3rd signal of 90 ° inputs to the first feeding network 42; The 4th signal transmitting module 84 is A/2 with amplitude, and phase place is that secondary signal and the amplitude of 90 ° is A/2, and phase place is that the 4th signal of 0 ° inputs to the second feeding network 43.
Further, the signal receiving unit 61 in the circular polarization antenna for base station that provides embodiment illustrated in fig. 6 specifically can comprise: first signal receiver module 86, secondary signal receiver module 87, the 3rd signal receiving module 88 and the 4th signal receiving module 89; First signal receiver module 86 is electrically connected to the first feeding network 42 and the 3rd signal receiving module 88 respectively; Secondary signal receiver module 87 is electrically connected to the second feeding network 43 and the 4th signal receiving module 89 respectively;
First signal receiver module 86 receives the 9th signal of the first feeding network 42 inputs, and the 9th signal is inputed to the 3rd signal receiving module 88; The 3rd signal receiving module 88 output the 9th signals;
Secondary signal receiver module 87 receives the tenth signal of the second feeding network 43 inputs, and the tenth signal is inputed to the 4th signal receiving module 89; The 4th signal receiving module 89 output the tenth signals.
Concrete, the first signal receiver module 86 in the present embodiment, secondary signal receiver module 87, the 3rd signal receiving module 88 and the 4th signal receiving module 89, be specifically as follows directional filter, directional coupler or duplexer etc.If directional filter or directional coupler, the input of first signal receiver module 86 is electrically connected to the first feeding network 42, the output of first signal receiver module 86 is electrically connected to the input of the 3rd signal receiving module 88, the output of the 3rd signal receiving module 88 is used for output the 9th signal, the input of secondary signal receiver module 87 is electrically connected to the second feeding network 43, the output of secondary signal receiver module 87 is electrically connected to the input of the 4th signal receiving module 89, and the output of the 4th signal receiving module 89 is used for output the tenth signal.If duplexer, the common port of first signal receiver module 86 is electrically connected to the first feeding network 42, the receiving terminal of first signal receiver module 86 is electrically connected to the receiving terminal of the 3rd signal receiving module 88, the common port of the 3rd signal receiving module 88 is used for output the 9th signal, the common port of first signal receiver module 86 is electrically connected to the first feeding network 42, the receiving terminal of secondary signal receiver module 87 is electrically connected to the receiving terminal of the 4th signal receiving module 89, and the common port of the 4th signal receiving module 89 is used for output the tenth signal.
First signal receiver module 86 receives the 9th signal of the first feeding network 42 inputs, and the 9th signal is exported by the 3rd signal receiving module 88, secondary signal receiver module 87 receives the tenth signal of the second feeding network 43 inputs, and the tenth signal is exported by the 4th signal receiving module 89.
The structural representation of the 3db electric bridge in the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Fig. 9.As shown in Figure 9, the 3db electric bridge, claim again same frequency combiner, it can along on a certain directions of transmission line to through-put power continuous sampling, an input signal can be divided into two amplitudes and equate and have the signal of 90 ° of phase differences., at first input end mouth input signal,, in the second input port no signal output, export the two-way amplitude at the first output port and the second output port and equate and have the signal of 90 ° of phase differences; , at the second input port input signal,, in the output of first input end mouth no signal, export the two-way amplitude at the first output port and the second output port and equate and have the signal of 90 ° of phase differences.
The structural representation of the duplexer in the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Figure 10.As shown in figure 10, duplexer, claim again antenna multicoupler, is more special two-way three end filters, comprises a mixer 101 and two directional filters 102.Duplexer can be come in faint reception signal coupling, stronger transmitting can be sent again, and two paths of signals is independent of each other.Duplexer will be exported by transmitting terminal or receiving terminal from the signal of common port input; Duplexer will be exported by common port from the signal of transmitting terminal or receiving terminal input.The name of transmitting terminal and receiving terminal is to define according to the specific environment of duplexer downlink or uplink receiving, as in the embodiment shown in fig. 8, adopt first signal sending module 81 and the secondary signal sending module 82 of duplexer, by the common port input signal, by the transmitting terminal output signal; Adopt the 3rd signal transmitting module 83 and the 4th signal transmitting module 84 of duplexer, by the transmitting terminal input signal, by the common port output signal; Adopt first signal receiver module 86 and the secondary signal receiver module 87 of duplexer to pass through the common port input signal, by the receiving terminal output signal; Adopt the 3rd signal receiving module 88 and the 4th signal receiving module 89 of duplexer to pass through the receiving terminal input signal, by the common port output signal.
Need to prove, in actual mechanical process, those skilled in the art can expect adopting first signal sending module 81, secondary signal sending module 82, the 3rd signal transmitting module 83 and four signal transmitting module 84 of duplexer, share a duplexer with the 3rd signal receiving module 88 that adopts duplexer, the 4th signal receiving module 89, first signal receiver module 86 and secondary signal receiver module 87 respectively.the structural representation of a kind of feasible pattern of the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided as shown in figure 11, first duplexer 111 respectively with the first port 47, 3db electric bridge 85 and the 3rd duplexer 113 are electrically connected to, the second duplexer 112 respectively with the second port 48, 3db electric bridge 85 and the 4th duplexer 114 are electrically connected to, the 3rd duplexer 113 respectively with the first feeding network 42, 3db electric bridge 85 and first duplexer 111 are electrically connected to, the 4th duplexer 114 respectively with the second feeding network 43, 3db electric bridge 85 and the second duplexer 112 are electrically connected to, the first feeding network 42 is electrically connected to First Line polarization oscillator 45, the second feeding network 43 is electrically connected to the second linear polarization oscillator 46.
Further, the first feeding network 42 in the circular polarization antenna for base station that provides embodiment illustrated in fig. 6 specifically can comprise: the first power splitter and at least one first phase shifter; The first phase shifter is electrically connected to First Line polarization oscillator and the first power splitter respectively, and the first power splitter is electrically connected to the signal Dispatching Unit;
The first power splitter is divided at least one the 11 signal with first signal, and each the 11 signal is inputed to first phase shifter; The 3rd signal is divided at least one the tenth binary signal, and each the tenth binary signal is inputed to first phase shifter;
The first phase shifter carries out phase shift to the 11 signal to be processed and to obtain the 5th signal and input to First Line polarization oscillator; The tenth binary signal is carried out phase shift to be processed and to obtain the 6th signal and input to First Line polarization oscillator.
concrete, in the downlink process, the first power splitter is divided into the first signal of the 3rd signal transmitting module 83 inputs in signal Dispatching Unit 41 the 11 signal that equates (for example 4) with antenna element 44 quantity, the amplitude of each the 11 signal is required to determine by the vertical plane figuration, generally the amplitude of each the 11 signal is unequal, phase place equates, and each the 11 signal is inputed in the first corresponding phase shifter, the quantity of the first phase shifter equates with the quantity of antenna element 44, the first phase shifter carries out phase shift to the 11 signal to be processed and to obtain the 5th signal and input in First Line polarization oscillator 45 in corresponding antenna element 44.the first power splitter is divided into the 3rd signal of the 3rd signal transmitting module 83 inputs in signal Dispatching Unit 41 the tenth binary signal that equates (for example 4) with antenna element 44 quantity, the amplitude of each the tenth binary signal is required to determine by the vertical plane figuration, generally the amplitude of each the tenth binary signal is unequal, phase place equates, and each the tenth binary signal is inputed in the first corresponding phase shifter, the quantity of the first phase shifter equates with the quantity of antenna element 44, the first phase shifter carries out phase shift to the tenth binary signal to be processed and to obtain the 6th signal and input in First Line polarization oscillator 45 in corresponding antenna element 44.
Further, the second feeding network 43 in the circular polarization antenna for base station that provides embodiment illustrated in fig. 6 specifically can comprise: the second power splitter and at least one second phase shifter; The second phase shifter is electrically connected to the second linear polarization oscillator and the second power splitter respectively, and the second power splitter is electrically connected to signal Dispatching Unit 41;
The second power splitter is divided at least one the 13 signal with secondary signal, and each the 13 signal is inputed to second phase shifter; The 4th signal is divided at least one the 14 signal, and each the 14 signal is inputed to second phase shifter;
The second phase shifter carries out phase shift to the 13 signal to be processed and to obtain the 7th signal and input to the second linear polarization oscillator; The 14 signal is carried out phase shift to be processed and to obtain the 8th signal and input to the second linear polarization oscillator.
concrete, in the downlink process, the second power splitter is divided into the secondary signal of the 4th signal transmitting module 84 inputs in signal Dispatching Unit 41 the 13 signal that equates (for example 4) with antenna element 44 quantity, the amplitude of each the 13 signal is required to determine by the vertical plane figuration, generally the amplitude of each the tenth binary signal is unequal, phase place equates, and each the 13 signal is inputed in the second corresponding phase shifter, the quantity of the second phase shifter equates with the quantity of antenna element 44, the second phase shifter carries out phase shift to the 13 signal to be processed and to obtain the 7th signal and input in the second linear polarization oscillator 46 in corresponding antenna element 44.the second power splitter is divided into the 4th signal of the 4th signal transmitting module 84 inputs in signal Dispatching Unit 41 the 14 signal that equates (for example 4) with antenna element 44 quantity, the amplitude of each the 14 signal is required to determine by the vertical plane figuration, generally the amplitude of each the tenth binary signal is unequal, phase place equates, and each the 14 signal is inputed in the second corresponding phase shifter, the quantity of the second phase shifter equates with the quantity of antenna element 44, the second phase shifter carries out phase shift to the 14 signal to be processed and to obtain the 8th signal and input in the second linear polarization oscillator 46 in corresponding antenna element 44.
Further, the first feeding network 42 can also comprise: the 3rd power splitter and at least one the 3rd phase shifter; The 3rd phase shifter is electrically connected to First Line polarization oscillator 45 and the 3rd power splitter respectively; The 3rd power splitter receives single 61 with signal and is electrically connected to;
The 3rd phase shifter receives the 3rd input signal of First Line polarization oscillator 45 inputs, and the 3rd input signal is carried out phase shift process and obtain the 15 signal and input to the 3rd power splitter;
The 3rd power splitter closes Lu Weidi nine signals with the 15 signal of each the 3rd phase shifter input and inputs to signal receiving unit 61.
concrete, the quantity of the 3rd phase shifter equates with the quantity of antenna element 44, in the uplink receiving process, the 3rd input signal that each the 3rd phase shifter is inputted corresponding First Line polarization oscillator 45 carries out the phase shift processing and obtains the 15 signal, the amplitude of each the 15 signal is required to determine by the vertical plane figuration, generally the amplitude of each the 15 signal is unequal, phase place equates, and the 15 signal is inputed to the 3rd power splitter, the 3rd power splitter closes Lu Weidi nine signals with the 15 signal of each the 3rd phase shifter input and inputs in first signal receiver module 86 in signal receiving unit 61.
Further, the second feeding network 43 can also comprise: the 4th power splitter and at least one the 4th phase shifter; The 4th phase shifter is electrically connected to the second linear polarization oscillator and the 4th power splitter respectively, and the 4th power splitter is electrically connected to signal receiving unit 61;
The 4th phase shifter receives the 4th input signal of the second linear polarization oscillator 46 inputs, and the 4th input signal is carried out phase shift process and obtain the 16 signal and input to the 4th power splitter;
The 4th power splitter closes Lu Weidi ten signals with the 16 signal of each the 4th phase shifter input and inputs to signal receiving unit 61.
concrete, the quantity of the 4th phase shifter equates with the quantity of antenna element 44, in the uplink receiving process, the 4th input signal that each the 4th phase shifter is inputted corresponding the second linear polarization oscillator 46 carries out the phase shift processing and obtains the 16 signal, the amplitude of each the 16 signal is required to determine by the vertical plane figuration, generally the amplitude of each the 16 signal is unequal, phase place equates, and the 16 signal is inputed to the 4th power splitter, the 4th power splitter closes Lu Weidi ten signals with the 16 signal of each the 4th phase shifter input and inputs in secondary signal receiver module 87 in signal receiving unit 61.
Need to prove, in actual mechanical process, those skilled in the art can expect the first power splitter in the first feeding network 42, the second power splitter in the second feeding network 43, respectively with the first feeding network 42 in the 3rd power splitter, the 4th power splitter in the second feeding network 43 share a power splitter.Each first phase shifter in the first feeding network 42, each second phase shifter in the second feeding network 43, respectively with the first feeding network 42 in each the 3rd phase shifter, each the 4th phase shifter in the second feeding network 43 share a phase shifter.
The structural representation of the feeding network in the circular polarization antenna for base station that provides embodiment illustrated in fig. 8 is provided Figure 12.As shown in figure 12, feeding network comprises power splitter 121 and phase shifter 122.
The circular polarization antenna for base station that the present embodiment provides, in the process of downlink, differ the 5th signal and the 6th signal of 90 ° by the First Line oscillator transmitter, phase that polarizes, differ the 7th signal and the 8th signal of 90 ° by the second linear polarization oscillator transmitter, phase, and the 5th signal equates with the 7th signal amplitude and 90 ° of phase phasic differences, form the left-hand circular polarization ripple, the 6th signal equates with the 8th signal amplitude and 90 ° of phase phasic differences, formation right-handed circular polarization ripple.Even left-hand circular polarization ripple and right-handed circular polarization ripple are under the unconspicuous environment of multipath effect, during the incoming terminal antenna, the probability that is deflected on any one direction is also identical, therefore the energy size of two circularly polarised waves receiving of each terminal antenna oscillator is also identical, and descending MIMO effect is better.In the process of uplink receiving, by the First Line line polarization wave of oscillator receiving terminal side antenna (comprising vertical line polarization oscillator and horizontal line polarization oscillator) emission forming in communication process after deflection the 3rd input signal that polarizes, line polarization wave by the second linear polarization oscillator receiving terminal side antenna (comprising vertical line polarization oscillator and horizontal line polarization oscillator) emission, at the 4th input signal that forms after deflection in communication process, has guaranteed not reduce existing Uplink MIMO effect.
The structural representation of the embodiment in base station that Figure 13 provides for the utility model.As shown in figure 13, this base station comprises: baseband processing unit 131, RF processing unit 132 and as Fig. 4 or Fig. 6 or the circular polarization antenna for base station 133 that provides embodiment illustrated in fig. 8; RF processing unit 132 is electrically connected to the signal Dispatching Unit 41 in baseband processing unit 131 and circular polarization antenna for base station 133 respectively.
Further, RF processing unit 132 also is electrically connected to the signal receiving unit 61 in circular polarization antenna for base station 133.
Concrete, the present embodiment provides a kind of base station of applying above-mentioned circular polarization antenna for base station 133, and has specifically described the electrical connection of the main equipment in the base station (baseband processing unit 131 and RF processing unit 132) and circular polarization antenna for base station 133.In the downlink process, RF processing unit 132 is to signal Dispatching Unit 41 input the first input signal and the second input signals; In the uplink receiving process, RF processing unit 132 receives the 9th signal and the tenth signal of signal receiving unit 61 outputs.
The base station that the present embodiment provides, in the process of downlink, differ the 5th signal and the 6th signal of 90 ° by the polarization of the First Line in circular polarization antenna for base station oscillator transmitter, phase, differ the 7th signal and the 8th signal of 90 ° by the second linear polarization oscillator transmitter, phase in the circular polarization antenna for base station, and the 5th signal equates with the 7th signal amplitude and 90 ° of phase phasic differences, form the left-hand circular polarization ripple, the 6th signal equates with the 8th signal amplitude and 90 ° of phase phasic differences, forms the right-handed circular polarization ripple.Even left-hand circular polarization ripple and right-handed circular polarization ripple are under the unconspicuous environment of multipath effect, during the incoming terminal antenna, the probability that is deflected on any one direction is also identical, therefore the energy size of two circularly polarised waves receiving of each terminal antenna oscillator is also identical, and descending MIMO effect is better.In the process of uplink receiving, the line polarization wave of launching by the polarization of the First Line in circular polarization antenna for base station oscillator receiving terminal side antenna (comprising vertical line polarization oscillator and horizontal line polarization oscillator) is forming in communication process after deflection the 3rd input signal, line polarization wave by the second linear polarization oscillator receiving terminal side antenna in the circular polarization antenna for base station (comprising vertical line polarization oscillator and horizontal line polarization oscillator) emission, at the 4th input signal that forms after deflection in communication process, has guaranteed not reduce existing Uplink MIMO effect.
It should be noted that finally: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to aforementioned each embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. circular polarization antenna for base station, it is characterized in that, comprise: signal Dispatching Unit, the first feeding network, the second feeding network and at least one antenna element, each described antenna element comprise First Line polarization oscillator and the second linear polarization oscillator of quadrature, wherein:
Described signal Dispatching Unit is electrically connected to described the first feeding network and described the second feeding network respectively, and described the first feeding network is electrically connected to described First Line polarization oscillator, and described the second feeding network is electrically connected to described the second linear polarization oscillator;
Described signal Dispatching Unit is divided into the first input signal to be sent that amplitude equates and first signal and the secondary signal of 90 ° of phase phasic differences, and described first signal is inputed to described the first feeding network, described secondary signal is inputed to described the second feeding network; The second input signal to be sent is divided into that amplitude equates and the 3rd signal and the 4th signal of 90 ° of phase phasic differences, and described the 3rd signal is inputed to described the first feeding network, described the 4th signal is inputed to described the second feeding network; Described the first input signal and described the second input signal amplitude equate and phase place equates, described first signal and described the 3rd signal phase differ 90 °, and described secondary signal and described the 4th signal phase differ 90 °;
Described the first feeding network is divided at least one the 5th signal with described first signal, and each described the 5th signal is inputed to described First Line polarization oscillator in a described antenna element; Described the 3rd signal is divided at least one the 6th signal, and each described the 6th signal is inputed to described First Line polarization oscillator in a described antenna element;
Described the second feeding network is divided at least one the 7th signal with described secondary signal, and each described the 7th signal is inputed to described the second linear polarization oscillator in a described antenna element; Described the 4th signal is divided at least one the 8th signal, and each described the 8th signal is inputed to described the second linear polarization oscillator in a described antenna element;
Described the 5th signal of inputting in same antenna element equates with described the 7th signal amplitude and 90 ° of phase phasic differences, described the 6th signal equates with described the 8th signal amplitude and 90 ° of phase phasic differences, described the 5th signal and described the 6th signal phase differ 90 °, and described the 7th signal and described the 8th signal phase differ 90 °;
Described First Line polarization oscillator described the 5th signal of emission and described the 6th signal; Described the second linear polarization oscillator described the 7th signal of emission and described the 8th signal.
2. circular polarization antenna for base station according to claim 1, is characterized in that, also comprises: signal receiving unit;
Described signal receiving unit is electrically connected to described the first feeding network and described the second feeding network respectively;
The 3rd input signal that described First Line polarization oscillator will receive inputs to described the first feeding network; The 4th input signal that described the second linear polarization oscillator will receive inputs to described the second feeding network;
Described the 3rd input signal that described the first feeding network receives the described First Line polarization oscillator in each described antenna element closes Lu Weidi nine signals and inputs to described signal receiving unit;
Described the 4th input signal that described the second feeding network receives described the second linear polarization oscillator in each described antenna element closes Lu Weidi ten signals and inputs to described signal receiving unit;
Described signal receiving unit is exported respectively described the 9th signal and described the tenth signal.
3. circular polarization antenna for base station according to claim 1 and 2, is characterized in that, described signal Dispatching Unit comprises: first signal sending module, secondary signal sending module, the 3rd signal transmitting module, the 4th signal transmitting module and 3db electric bridge;
Described first signal sending module, described secondary signal sending module, described the 3rd signal transmitting module, described the 4th signal transmitting module are electrically connected to described 3db electric bridge respectively, described the 3rd signal transmitting module is electrically connected to described the first feeding network, and described the 4th signal transmitting module is electrically connected to described the second feeding network;
Described first signal sending module inputs to described 3db electric bridge with described the first input signal; Described secondary signal sending module inputs to described 3db electric bridge with described the second input signal;
Described 3db electric bridge is divided into described first signal and described secondary signal with described the first input signal, and described first signal is inputed to described the 3rd signal transmitting module, and described secondary signal is inputed to described the 4th signal transmitting module; Described the second input signal is divided into described the 3rd signal and described the 4th signal, and described the 3rd signal is inputed to described the 3rd signal transmitting module, described the 4th signal is inputed to described the 4th signal transmitting module;
Described the 3rd signal transmitting module inputs to described the first feeding network with described first signal and described the 3rd signal; Described the 4th signal transmitting module inputs to described the second feeding network with described secondary signal and described the 4th signal.
4. circular polarization antenna for base station according to claim 2, is characterized in that, described signal receiving unit comprises: first signal receiver module, secondary signal receiver module, the 3rd signal receiving module and the 4th signal receiving module;
Described first signal receiver module is electrically connected to described the first feeding network and described the 3rd signal receiving module respectively; Described secondary signal receiver module is electrically connected to described the second feeding network and described the 4th signal receiving module respectively;
Described first signal receiver module receives described the 9th signal of described the first feeding network input, and described the 9th signal is inputed to described the 3rd signal receiving module; Described the 3rd described the 9th signal of signal receiving module output;
Described secondary signal receiver module receives described the tenth signal of described the second feeding network input, and described the tenth signal is inputed to described the 4th signal receiving module; Described the 4th described the tenth signal of signal receiving module output.
5. circular polarization antenna for base station according to claim 1 and 2, is characterized in that, described the first feeding network comprises: the first power splitter and at least one first phase shifter;
Described the first phase shifter is electrically connected to described First Line polarization oscillator and described the first power splitter respectively, and described the first power splitter is electrically connected to described signal Dispatching Unit;
Described the first power splitter is divided at least one the 11 signal with described first signal, and each described the 11 signal is inputed to described first phase shifter; Described the 3rd signal is divided at least one the tenth binary signal, and each described the tenth binary signal is inputed to described first phase shifter;
Described the first phase shifter carries out phase shift to described the 11 signal to be processed and to obtain described the 5th signal and input to described First Line polarization oscillator; Described the tenth binary signal is carried out phase shift to be processed and to obtain described the 6th signal and input to described First Line polarization oscillator;
Described the second feeding network comprises: the second power splitter and at least one second phase shifter;
Described the second phase shifter is electrically connected to described the second linear polarization oscillator and described the second power splitter respectively, and described the second power splitter is electrically connected to described signal Dispatching Unit;
Described the second power splitter is divided at least one the 13 signal with described secondary signal, and each described the 13 signal is inputed to described second phase shifter; Described the 4th signal is divided at least one the 14 signal, and each described the 14 signal is inputed to described second phase shifter;
Described the second phase shifter carries out phase shift to described the 13 signal to be processed and to obtain described the 7th signal and input to described the second linear polarization oscillator; Described the 14 signal is carried out phase shift to be processed and to obtain described the 8th signal and input to described the second linear polarization oscillator.
6. circular polarization antenna for base station according to claim 5, is characterized in that, described the first feeding network also comprises: the 3rd power splitter and at least one the 3rd phase shifter;
Described the 3rd phase shifter is electrically connected to described First Line polarization oscillator and described the 3rd power splitter respectively; Described the 3rd power splitter is electrically connected to described signal receiving unit;
Described the 3rd phase shifter receives described the 3rd input signal of described First Line polarization oscillator input, and described the 3rd input signal is carried out phase shift process and obtain the 15 signal and input to described the 3rd power splitter;
It is that described the 9th signal inputs to described signal receiving unit that described the 3rd power splitter closes road with described the 15 signal of each described the 3rd phase shifter input.
7. circular polarization antenna for base station according to claim 5, is characterized in that, described the second feeding network also comprises: the 4th power splitter and at least one the 4th phase shifter;
Described the 4th phase shifter is electrically connected to described the second linear polarization oscillator and described the 4th power splitter respectively, and described the 4th power splitter is electrically connected to described signal receiving unit;
Described the 4th phase shifter receives described the 4th input signal of described the second linear polarization oscillator input, and described the 4th input signal is carried out phase shift process and obtain the 16 signal and input to described the 4th power splitter;
It is that described the tenth signal inputs to described signal receiving unit that described the 4th power splitter closes road with described the 16 signal of each described the 4th phase shifter input.
8. circular polarization antenna for base station according to claim 1 and 2, is characterized in that, described First Line polarization oscillator is+45 ° of linear polarization oscillators, and described the second linear polarization oscillator is-45 ° of linear polarization oscillators; Perhaps,
Described First Line polarization oscillator is horizontal line polarization oscillator, and described the second linear polarization oscillator is vertical line polarization oscillator.
9. a base station, is characterized in that, comprising: baseband processing unit, RF processing unit and circular polarization antenna for base station as described in claim 1-8 any one;
Described RF processing unit is electrically connected to the signal Dispatching Unit in described baseband processing unit and described circular polarization antenna for base station respectively.
10. base station according to claim 9, is characterized in that, described RF processing unit is electrically connected to the signal receiving unit in described circular polarization antenna for base station.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058435A (en) * | 2016-07-12 | 2016-10-26 | 三维通信股份有限公司 | Wideband circular polarized antenna |
| CN107171711A (en) * | 2017-06-07 | 2017-09-15 | 上海华为技术有限公司 | A kind of signal transmitting method and sender unit |
| CN110829024A (en) * | 2019-11-26 | 2020-02-21 | 武汉虹信通信技术有限责任公司 | Method and device for connecting feed network and radiation unit array |
| CN113659339A (en) * | 2021-08-23 | 2021-11-16 | 深圳市道通智能汽车有限公司 | Vehicle-mounted millimeter wave radar, transmitting antenna and receiving antenna system thereof, and antenna system |
-
2013
- 2013-06-07 CN CN2013203295320U patent/CN203300810U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058435A (en) * | 2016-07-12 | 2016-10-26 | 三维通信股份有限公司 | Wideband circular polarized antenna |
| CN107171711A (en) * | 2017-06-07 | 2017-09-15 | 上海华为技术有限公司 | A kind of signal transmitting method and sender unit |
| CN107171711B (en) * | 2017-06-07 | 2020-12-22 | 上海华为技术有限公司 | Signal transmitting method and signal transmitting device |
| CN110829024A (en) * | 2019-11-26 | 2020-02-21 | 武汉虹信通信技术有限责任公司 | Method and device for connecting feed network and radiation unit array |
| CN110829024B (en) * | 2019-11-26 | 2021-08-03 | 中信科移动通信技术股份有限公司 | Method and device for connecting feed network and radiation unit array |
| CN113659339A (en) * | 2021-08-23 | 2021-11-16 | 深圳市道通智能汽车有限公司 | Vehicle-mounted millimeter wave radar, transmitting antenna and receiving antenna system thereof, and antenna system |
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