CN107645050A - A kind of satellite navigation aerial - Google Patents
A kind of satellite navigation aerial Download PDFInfo
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- CN107645050A CN107645050A CN201710842010.3A CN201710842010A CN107645050A CN 107645050 A CN107645050 A CN 107645050A CN 201710842010 A CN201710842010 A CN 201710842010A CN 107645050 A CN107645050 A CN 107645050A
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- symmetrical dipole
- circuit board
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- down dip
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Abstract
This application provides a kind of satellite navigation aerial, including the first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board, orthogonal be arranged on ground plane printed circuit board of two printing symmetrical dipole circuit boards forms cross-polarized antennas.The bottom of printing symmetrical dipole circuit board is the symmetrical dipole that direction has a down dip, and top layer is microstrip balun.The top layer of ground plane printed circuit board is ground plane, and bottom is provided with antenna feeding network.The satellite navigation aerial using printing symmetrical dipole as antenna radiation unit, it is in light weight, cost is low.
Description
Technical field
The invention belongs to navigation antenna technical field, more particularly to a kind of satellite navigation aerial.
Background technology
Satellite navigation aerial is used for the signal for receiving position location satellite.At present, a kind of satellite navigation aerial largely used is more
It is based on the theoretical micro-strip ceramic chip antenna of microstrip antenna.Different-thickness is made for dielectric material using ceramics in this antenna
Square or circular antenna piece, then, reflecting surface and radiating surface are formed using low temperature roasting silver on antenna sheet both sides, then by presenting pin
Feed forms satellite navigation aerial.Such a antenna using ceramics as medium, because the dielectric constant of ceramics is high, antenna frequencies bandwidth
It is very narrow；Moreover, ceramic material is than great, weight weight.
At present, another satellite navigation aerial largely used is with polytetrafluoroethylene (PTFE) or carbon based on microstrip antenna theory
Hydrogen compound is the chip aerial of dielectric material, and different thickness are made using polytetrafluoroethylene (PTFE) or hydrocarbon material in this antenna
The double face copper of degree, then, reflecting surface and radiating surface are made using two-sided PCB manufacturing process, then feed to be formed by presenting pin
High-accuracy satellite navigation antenna.Polytetrafluoroethylene (PTFE) antenna sheet material dielectric constant error is big and uneven, the antenna spoke of different batches
It is inconsistent to penetrate face；Hydrocarbon antenna material non-refractory, PCB manufacture crafts require very high, make hydrocarbon plate
The cost of material antenna sheet is very high.Polytetrafluoroethylene (PTFE) antenna sheet material proportion is high, weight weight.
Therefore, a kind of satellite navigation aerial in light weight, cost is low and precision is high is needed badly.
The content of the invention
In view of this, it is an object of the invention to provide a kind of satellite navigation aerial, to solve existing satellite navigation day
Line weight weight, the technical problem that cost is high and precision is not high.Its technical scheme is as follows：
This application provides a kind of satellite navigation aerial, including：First printing symmetrical dipole circuit board, the second printing are symmetrical
Subcircuit plate and ground plane printed circuit board；
The bottom of the first printing symmetrical dipole circuit board is the first symmetrical dipole radiating surface, and top layer is the first micro-strip bar
Human relations, the first symmetrical dipole radiating surface are printed with the symmetrical dipole that direction has a down dip；
The bottom of the second printing symmetrical dipole circuit board is the second symmetrical dipole radiating surface, and top layer is the second micro-strip bar
Human relations, the second symmetrical dipole radiating surface are printed with the symmetrical dipole that direction has a down dip；
The top layer of the ground plane printed circuit board is ground plane, and bottom is antenna feeding network, and the top layer
It is dielectric material between bottom；
The first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board are flat with the ground connection
Face printed circuit board is vertically arranged, and the first printing symmetrical dipole circuit board and the described second printing symmetrical dipole circuit board
Orthogonal installation.
Alternatively, it is provided with least two pairs of symmetrical dipoles that have a down dip on the first symmetrical dipole radiating surface, described at least two
It is parallel successively to the symmetrical dipole that has a down dip to be distributed on the first symmetrical dipole radiating surface, and have a down dip described in any two pairs and symmetrically shake
Sub length is different, signal frequency is different；
It is provided with least two pairs of symmetrical dipoles that have a down dip on the second symmetrical dipole radiating surface, described at least two pairs have a down dip pair
Claim that oscillator is parallel successively is distributed on the second symmetrical dipole radiating surface, and the length for the symmetrical dipole that had a down dip described in any two pairs
It is different, signal frequency is different.
Alternatively, the first symmetrical dipole radiating surface including first pair has a down dip symmetrical dipole and second pair has a down dip and symmetrically shake
Son, and the described first pair symmetrical dipole that has a down dip is different with the frequency of the described second pair symmetrical dipole covering signal that has a down dip；
The second symmetrical dipole radiating surface includes the 3rd pair of have a down dip symmetrical dipole and the 4th pair of symmetrical dipole that has a down dip, and institute
It is different with the frequency of the described 4th pair symmetrical dipole covering signal that has a down dip to state the 3rd pair of symmetrical dipole that has a down dip.
Alternatively, first printing symmetrical dipole circuit board peace orthogonal with the described second printing symmetrical dipole circuit board
Dress, including：
The vertical central axis epimere of the first printing symmetrical dipole circuit board is provided with the first gap；
The vertical central axis hypomere of the second printing symmetrical dipole circuit board is provided with the second gap；
The first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board stitch by described first
Gap and second gap form the cross-polarized antennas that angle is 90 °；
Wherein, the total length in first gap and second gap is equal to the described first printing symmetrical dipole circuit board
Longitudinal length, wherein, it is described first printing symmetrical dipole circuit board longitudinal length and it is described second printing symmetrical dipole electricity
The longitudinal length of road plate is equal, and the gap width in first, second gap and described first, second printing symmetrical dipole electricity
The thickness of road plate is equal.
Alternatively, the transverse direction of the first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board is long
It is 30mm~70mm to spend for 25mm~60mm, longitudinal length, and thickness is 0.3mm~1mm.
Alternatively, the ground plane printed circuit board is double-sided copper-clad printed circuit board, and thickness is 0.5mm~2mm.
Alternatively, the ground plane printed circuit board is circular or square, and diameter or the length of side are 30mm~220mm.
Alternatively, the antenna feeding network is 90 degree of 3dB electric bridges, and 90 degree of 3dB electric bridges include first input end, the
Two input, output ends and isolation end；
The first input end connects the output end of first microstrip balun, the second input connection described second
The output end of microstrip balun；The output end of 90 degree of 3dB electric bridges is used to export the electricity after handling via 90 degree of 3dB electric bridges
Signal.
Alternatively, first microstrip balun includes：First input end, the second input and output end；
The first input end connects an oscillator in the symmetrical dipole, and the second input connection is described symmetrical
Another oscillator in oscillator, the output end connect the antenna feeding network.
Alternatively, the frequency for having a down dip symmetrical dipole covering signal is GPS (Global
Navigation Satellite System, GNSS) frequency.Navigator fix antenna provided by the invention, including the first printing pair
Claim subcircuit plate and the second printing symmetrical dipole circuit board, symmetrical dipole circuit board is orthogonal is arranged on ground plane for two printings
Cross-polarized antennas is formed on printed circuit board.The bottom of printing symmetrical dipole circuit board is the symmetrical dipole that direction has a down dip, and is pushed up
Layer is microstrip balun.The top layer of ground plane printed circuit board is ground plane, and bottom is provided with antenna feeding network；Symmetrically shake
After the signal of son output is changed by microstrip balun, antenna feeding network is transferred to via via.Will by antenna feeding network
After the signal phase shift of second printing symmetrical dipole circuit board output, right-handed circular polarization electric signal is obtained.The satellite navigation aerial is adopted
By the use of printing symmetrical dipole as antenna radiation unit, compared with using the antenna of micro-strip sheet antenna element, symmetrical dipole is printed
In light weight, cost it is low；It can improve the gain at the low elevation angle, no moreover, printing symmetrical dipole is the symmetrical dipole that has a down dip of direction
Circularity and axle ratio, so as to improve printing symmetrical dipole phase center variation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structural representation of satellite navigation aerial of the embodiment of the present application；
Fig. 2 is a kind of structural representation of first printing symmetrical dipole circuit board of the embodiment of the present application；
Fig. 3 is a kind of structural representation of second printing symmetrical dipole circuit board of the embodiment of the present application；
Fig. 4 is a kind of structural representation of ground plane printed circuit board of the embodiment of the present application；
Fig. 5 is a kind of pin configuration schematic diagram of antenna feeding network of the embodiment of the present application；
Fig. 6 is gain pattern of the satellite navigation aerial in high band of the application offer；
Fig. 7 is gain pattern of the satellite navigation aerial in low-frequency range of the application offer；
Fig. 8 is the schematic diagram for 20 degree of elevation angle out-of-roundness of satellite navigation aerial that the application provides；
Fig. 9 is the schematic diagram for the satellite navigation aerial axial ratio that the application provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The structure of the satellite navigation aerial of the embodiment of the present application offer is provided below in conjunction with Fig. 1-Fig. 4.
Fig. 1 shows a kind of structural representation of satellite navigation aerial of the embodiment of the present application, and Fig. 2 shows that the application is implemented
A kind of structural representation of first printing symmetrical dipole circuit board of example；Fig. 3 shows the printing pair of the embodiment of the present application one kind second
Claim the structural representation of subcircuit plate；Fig. 4 shows that a kind of structure of ground plane printed circuit board of the embodiment of the present application is shown
It is intended to.The satellite navigation aerial that the embodiment of the present application provides is used for the electromagnetic signal for receiving satellite launch.
As shown in figure 1, the satellite navigation aerial includes：First printing symmetrical dipole circuit board A and the second printing are symmetrically shaken
Sub-circuit board B, and, a ground plane printed circuit board C.
Wherein, print symmetrical dipole circuit board A and printing symmetrical dipole circuit board B is mutually orthogonal, and it is flat installed in ground connection
On the printed circuit board (PCB) C of face, cross-polarized antennas is formed.
As shown in Fig. 2 the first printing symmetrical dipole circuit board A top layer is microstrip balun coupled transmission line 11, bottom is
Symmetrical dipole radiating surface, wherein, the printing symmetrical dipole 12 that direction has a down dip is provided with symmetrical dipole radiating surface, printing is symmetrically shaken
The symmetrical dipole that son is formed on a printed circuit.Wherein, the top of the first printing symmetrical dipole circuit board both sides shown in Fig. 2
Layer is microstrip balun coupled transmission line, and the two microstrip balun coupled transmission lines form a microstrip balun；In addition, micro-strip bar
Human relations coupled transmission line includes microstrip transmission line and balun transmission line.
Microstrip balun includes two inputs and an output end, wherein, the one of an input connected symmetrical dendrimer oscillator 12
Individual oscillator, another oscillator of another input connected symmetrical dendrimer oscillator 12, microstrip balun are used for input two inputs
Through being exported by output end after signal synthesis.
Alternatively, in order that satellite navigation aerial covering two-frequency signal or multiple-frequency signal, are printing the base of symmetrical dipole 12
Increase one or more pairs of printing symmetrical dipoles on plinth, for example, the printing symmetrical dipole 13 in increase Fig. 2.As shown in Fig. 2 printing
Symmetrical dipole 12 and printing symmetrical dipole 13 are dipping type printing symmetrical dipole.
Wherein, printing symmetrical dipole 12 is arranged on the first printing symmetrical dipole circuit board A periphery, the length of its symmetrical dipole
Degree is longer, and the wavelength of its signal that can be transmitted is longer, is had a down dip symmetrical dipole as low-frequency range.Printing symmetrical dipole 13 is arranged on
First printing symmetrical dipole circuit board A inner side, the length of its symmetrical dipole are longer than the symmetrical dipole of printing symmetrical dipole 12
Spend short, the wavelength of its signal that can be transmitted is shorter, is had a down dip symmetrical dipole as high band.
As shown in figure 3, the second printing symmetrical dipole circuit board B top layer is microstrip balun coupled transmission line 21, bottom is
Symmetrical dipole radiating surface.Second printing symmetrical dipole circuit board B two sides top layer is microstrip balun coupled transmission line 21, and this two
Individual microstrip balun coupled transmission line forms a microstrip balun.
Wherein, the periphery of symmetrical dipole radiating surface is provided with printing symmetrical dipole 22, and the inner side of printing symmetrical dipole 22 is set
It is equipped with printing symmetrical dipole 23.Printing symmetrical dipole 22 is that low-frequency range has a down dip symmetrical dipole, and wavelength is longer；Print symmetrical dipole 23
Had a down dip symmetrical dipole for high band, wavelength is shorter.
Microstrip balun is used to print symmetrical dipole 22 and print the balanced signal on symmetrical dipole 23 to be converted into imbalance
Signal simultaneously exports.
As shown in figure 4, ground plane printed circuit board C top layer is reference horizontal plane of manufacturing, bottom is antenna feeding network, its
In, it is dielectric material between top layer and bottom.Moreover, the center of ground plane printed circuit board is provided with two vias,
Respectively the first via 31 and the second via 32；
Wherein, microstrip balun coupled transmission line 11 is connected by the first via 31 with antenna feeding network, microstrip balun coupling
Transmission line 21 is closed to be connected with antenna feeding network by the second via 32.
The course of work of above-mentioned satellite navigation aerial is described more fully below：
1) printing symmetrical dipole circuit board only has the satellite navigation aerial of a pair of printing symmetrical dipoles
The balanced electric signal that two oscillators on printing symmetrical dipole 12 on first printing symmetrical dipole circuit board A receive
A unbalanced signal is coupled as by microstrip balun coupled transmission line 11 to export.The signal of microstrip balun output is flat by ground connection
The first via 31 on the printed circuit board C of face is delivered to the first input end of antenna feeding network.
The balanced electric signal that two oscillators on printing symmetrical dipole 22 on second printing symmetrical dipole circuit board B receive
Carry out being coupled as a unbalanced signal output by microstrip balun coupled transmission line 21.The signal of microstrip balun output is by connecing
The second via 32 on ground level printed circuit board C is delivered to the second input of antenna feeding network.
Wherein, it is identical with the frequency for printing the covering signal of symmetrical dipole 22 to print symmetrical dipole 12, moreover, the first printing pair
Claiming the printing orthogonal installations of symmetrical dipole circuit board B of subcircuit plate A and second, i.e. A and B setting angles differ 90 °, therefore, print
Signal phase on symmetrical dipole 12 processed and printing symmetrical dipole 22 differs 90 °.
90 ° of the signal delay that antenna feeding network inputs the second input, then, the signal with first input end input
Through being exported by output end after synthesis, right-handed circular polarization electric signal is obtained.
For example, the signal on printing symmetrical dipole 12 is a1, and a1 frequency is f1；Print the signal on symmetrical dipole 22
Frequency for b1, and b1 is f1；A1 differs 90 ° with b1 phase.
A1 obtains a11 after microstrip balun is changed, and passes to the first input end of antenna feeding network, and b1 is by micro-
B11 is obtained after band balun conversion, and passes to the second input of antenna feeding network；
The electric signal b11 that antenna feeding network inputs the second input postpones 90 °, then, is inputted with first input end
A11 synthesis output, i.e. a11 phase is identical with the phase of output signal of antenna feeding network；B11 phase and antenna feed
The phase of output signal of electric network differs 90 °.Finally, right-handed circular polarization electric signal is exported in the output end of antenna feeding network.
It is of course also possible to left-hand circular polarization electric signal is exported according to demand.
2) printing has the satellite navigation aerial of at least two pairs printing symmetrical dipoles on symmetrical dipole circuit board
Printing symmetrical dipole 12 and 13, the second printing symmetrical dipole electricity are provided with first printing symmetrical dipole circuit board A
Printing symmetrical dipole 22 and 23 is provided with the plate B of road.
For example, the signal on printing symmetrical dipole 12 is a1, and a1 frequency is f1；Print the signal on symmetrical dipole 13
Frequency for a2, and a2 is f2.Similarly, the signal printed on symmetrical dipole 22 is b1, and b1 frequency is f1；Printing is symmetrically shaken
Signal on son 23 is b2, and b2 frequency is f2.Wherein, a1 and b1 90 ° of phase difference, a2 and b2 phase differ 90 °.
A1 and a2 obtains a11 and a21 after microstrip balun is changed and passes to the first input end of antenna feeding network；
B1 and b2 obtains b11 and b21 after microstrip balun is changed and passes to the second input of antenna feeding network.
The first input end input a11 and a21 of antenna feeding network, the second input input b11 and b21, the antenna feed
Electric network is used to b11 and b21 postponing 90 °, and is exported after being synthesized with a11 and a21, i.e. a11 and a21 phase and antenna feed
Electric network phase of output signal is identical, and b11 and b21 phase differ 90 ° with the phase of antenna feeding network output signal.Most
Eventually, right-handed circular polarization electric signal is exported in the output end of antenna feeding network.It is of course also possible to left-handed entelechy is exported according to demand
Change electric signal.
In one embodiment of the application, antenna feeding network can use 90 degree of 3dB electric bridges to realize, as shown in figure 5,
90 degree of 3dB electric bridges include first input end 41, the second input 42, output end 43 and isolation end 44.
First input end 41 is used for the output end for connecting the microstrip balun on the first printing symmetrical dipole circuit board A；Second
Input 42 is used for the output end for connecting the microstrip balun on the second printing symmetrical dipole circuit board B；90 degree of 3dB electric bridges are used for
Signal after 90 ° of the signal delay of second input with first input end input is synthesized into output.That is, the signal of first input end
It is identical with the signal phase of output end output, 90 ° of the signal delay of the signal of output end than the second input.
The navigator fix antenna that the present embodiment provides, including the first printing symmetrical dipole circuit board and the second printing are symmetrically shaken
Sub-circuit board, two orthogonal are arranged on ground plane printed circuit board of printing symmetrical dipole circuit board form cross polarization day
Line.The bottom of printing symmetrical dipole circuit board is the symmetrical dipole that direction has a down dip, and top layer is microstrip balun.Ground plane printing electricity
The top layer of road plate is reference horizontal plane of manufacturing, and bottom is provided with antenna feeding network；The satellite navigation aerial is using printing symmetrical dipole
As antenna radiation unit, compared with using the antenna of micro-strip sheet antenna element, in light weight, the cost of symmetrical dipole are printed
It is low；Moreover, the printing symmetrical dipole that has a down dip can be decomposed into horizontal direction oscillator and vertical direction oscillator, wherein, vertical direction shakes
Sub- maximum gain component in the horizontal direction, adds the gain of antenna component in the horizontal direction, this improves the low elevation angle of antenna
Yield value, meanwhile, the horizontal directivity pattern out-of-roundness of antenna is improved, therefore, improves the phase center of satellite navigation aerial.Together
When, printing symmetrical dipole circuit board A and the printing orthogonal installations of symmetrical dipole circuit board B, isolation between two circuit boards compared with
Height, so as to improve the axle of antenna ratio, improve the interference free performance of antenna.
In one embodiment of the application, as shown in Fig. 2 the first printing symmetrical dipole circuit board A vertical central axis
The epimere in direction is provided with the first gap 14.As shown in figure 3, the second printing symmetrical dipole circuit board B longitudinal center's direction of principal axis
Hypomere be provided with the second gap 24.Wherein, the length in the first gap 14 and the second gap 24 and symmetrically shaken equal to the first printing
Sub-circuit board A (or, second printing symmetrical dipole circuit board B) longitudinal length.Moreover, the first gap, the gap in the second gap
Width is equal to the thickness of first, second printing symmetrical dipole circuit board.
That second printing symmetrical dipole circuit board B the second gap 24 is passed through into the first printing symmetrical dipole circuit board A
The first printing symmetrical dipole circuit board of one gap 14 insertion A vertical central axis.As shown in figure 1, the first printing symmetrical dipole electricity
Angle between the printing symmetrical dipole circuit boards of road plate A and second B is 90 degree.Therefore, first print symmetrical dipole circuit board A's
The signal in orthogonal of signal and the second printing symmetrical dipole circuit board B.
In one embodiment of the application, the first printing symmetrical dipole circuit A and the second printing symmetrical dipole circuit B are equal
For double-sided copper-clad printed circuit board (PCB), thickness of slab is 0.3mm~1mm, laterally (that is, perpendicular to the direction in gap) length be 25mm~
60mm, longitudinal direction (that is, the direction for setting gap) length is 30mm~70mm.Ground plane printed circuit board C is circular or other
The double-sided copper-clad printed circuit board (PCB) of shape (such as square), thickness of slab be 0.5mm~2mm, circular diameter range (or, pros
The length of side of shape) can be 40mm~220mm.In the present embodiment, using the weight of whole navigator fix antenna after printed circuit board
About 30~60g, moreover, cost of the cost of printed circuit board well below microstrip antenna.
For the satellite navigation aerial that the application provides using the symmetrical dipole that has a down dip, the symmetrical dipole that has a down dip can be decomposed into level side
To oscillator and vertical direction oscillator, wherein, vertical direction oscillator maximum gain component in the horizontal direction, adds antenna in level
The gain of durection component, this improves antenna low elevation gain value, meanwhile, improve the horizontal directivity pattern out-of-roundness of antenna.
Fig. 6 and Fig. 7 are referred to, Fig. 6 shows vertical plane gain of the satellite navigation aerial in high band of the application offer
Directivity curve schematic diagram；Fig. 7 shows vertical plane gain direction curve of the satellite navigation aerial in low-frequency range of the application offer
Schematic diagram；
The signal frequency coverage for the antenna that Fig. 6 is directed to is 1525MHz~1605MHz, wherein, during f1=1525MHz,
Max (axial maxgain value)=4.8138；During f2=1540MHz, max=5.3410；During f3=1561MHz, max=
5.5489；F4=1575MHz, max=5.4219；During f5=1605MHz, max=4.7458.Moreover, m1 represents -20 ° of elevations angle
When, yield value is -0.5339；When m2 represents 20 ° of elevations angle, yield value is 0.2417.
The aerial signal frequency range that Fig. 7 is directed to is 1207MHz~1268MHz；Wherein, during f1=1207MHz, max (axles
To maxgain value)=4.5636；During f2=1227MHz, max=5.3289；During f3=1247MHz, max=5.2340；f4
During=1268MHz, max=4.0364.
Low elevation gain situation, m1 are that satellite navigation aerial is located at α azimuths, 20 ° of elevations angle, and yield value is -0.0274；m2
For α ± 180 ° azimuth, 20 ° of elevations angle, yield value is -1.2992.Herein, the span of azimuth angle alpha is 0 °~360 °.
From the broader bandwidth of Fig. 6 and Fig. 7, the application satellite navigation aerial provided, moreover, yield value during the low elevation angle
It is higher.
Fig. 8 is referred to, shows that the satellite navigation aerial that the application provides is bent in 20 degree of low elevation gain directions of horizontal plane
Line chart.
In Fig. 8, when curve A represents f1=1227MHz, gain direction curve when α azimuths, 20 ° of elevations angle；Curve B tables
When showing f1=1227MHz, α ± 180 ° azimuth, the gain direction curve at 20 ° of elevations angle；When curve C represents f2=1575MHz, α
Gain direction curve when azimuth, 20 ° of elevations angle；When curve D represents f2=1575MHz, α ± 180 ° azimuth, 20 ° of elevations angle
Gain direction curve.
As shown in Figure 8, the satellite navigation aerial that the application provides horizontal directivity pattern out-of-roundness at 20 ° of elevations angle is preferable, because
This, the phase center of the satellite navigation aerial is preferable.
Fig. 9 is referred to, shows the satellite navigation axle of the application offer than schematic diagram, the satellite navigation day of the application offer
Printing symmetrical dipole circuit board A in line and the printing orthogonal installations of symmetrical dipole circuit board B, the isolation between two circuit boards
It is higher, so as to improve the axle of antenna ratio.
In Fig. 9, the longitudinal axis is axle ratio, and transverse axis represents angle.Wherein, axle when curve A is f1=1227MHz compares curve map；
Axle when curve B is f2=1575MHz compares curve map.M1 in curve represents axial axis ratio, and m2, m3 represent that azimuth differs
Axle ratio at 180 ° during 10 ° of elevations angle.As shown in Figure 9, elevation coverage of the satellite navigation aerial that the application provides more than 10 °
Interior, its axle is than respectively less than 3dB, and therefore, the circular polarisation purity of the satellite navigation aerial of the application is higher, and interference free performance is preferable.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
For device class embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is joined
See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except other identical element in the process including the key element, method, article or equipment being also present.
The foregoing description of the disclosed embodiments, those skilled in the art are enable to realize or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
The embodiments shown herein is formed on, and is to fit to consistent with principles disclosed herein and features of novelty most wide
Scope.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. satellite navigation aerial, it is characterised in that including：First printing symmetrical dipole circuit board, the second printing are symmetrically shaken Sub-circuit board and ground plane printed circuit board；The bottom of the first printing symmetrical dipole circuit board is the first symmetrical dipole radiating surface, and top layer is the first microstrip balun, The first symmetrical dipole radiating surface is printed with the symmetrical dipole that direction has a down dip；The bottom of the second printing symmetrical dipole circuit board is the second symmetrical dipole radiating surface, and top layer is the second microstrip balun, The second symmetrical dipole radiating surface is printed with the symmetrical dipole that direction has a down dip；The top layer of the ground plane printed circuit board is ground plane, and bottom is antenna feeding network, and the top layer and bottom It is dielectric material between layer；The first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board print with the ground plane Circuit board processed is vertically arranged, and the first printing symmetrical dipole circuit board is orthogonal with the described second printing symmetrical dipole circuit board Installation.
- 2. satellite navigation aerial according to claim 1, it is characterised in thatIt is provided with least two pairs of symmetrical dipoles that have a down dip on the first symmetrical dipole radiating surface, described at least two pairs have a down dip and symmetrically shake Son is parallel successively to be distributed on the first symmetrical dipole radiating surface, and the length for the symmetrical dipole that had a down dip described in any two pairs is each not It is identical, signal frequency is different；It is provided with least two pairs of symmetrical dipoles that have a down dip on the second symmetrical dipole radiating surface, described at least two pairs have a down dip and symmetrically shake Son is parallel successively to be distributed on the second symmetrical dipole radiating surface, and the length for the symmetrical dipole that had a down dip described in any two pairs is each not It is identical, signal frequency is different.
- 3. navigator fix antenna according to claim 2, it is characterised in that the first symmetrical dipole radiating surface includes the A pair have a down dip symmetrical dipole and second pair of symmetrical dipole that have a down dip, and described first pair has a down dip symmetrical dipole and described second pair has a down dip The frequency of symmetrical dipole covering signal is different；The second symmetrical dipole radiating surface includes the 3rd pair of have a down dip symmetrical dipole and the 4th pair of symmetrical dipole that has a down dip, and described Three pairs of symmetrical dipoles that have a down dip are different with the frequency of the described 4th pair symmetrical dipole covering signal that has a down dip.
- 4. navigator fix antenna according to claim 1 or 2, it is characterised in that the first printing symmetrical dipole circuit Plate installation orthogonal with the described second printing symmetrical dipole circuit board, including：The vertical central axis epimere of the first printing symmetrical dipole circuit board is provided with the first gap；The vertical central axis hypomere of the second printing symmetrical dipole circuit board is provided with the second gap；The first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board by first gap and Second gap forms the cross-polarized antennas that angle is 90 °；Wherein, the total length in first gap and second gap is equal to the vertical of the described first printing symmetrical dipole circuit board To length, wherein, the longitudinal length of the first printing symmetrical dipole circuit board and the second printing symmetrical dipole circuit board Longitudinal length it is equal, and the gap width in first, second gap with described first, second printing symmetrical dipole circuit board Thickness it is equal.
- 5. navigator fix antenna according to claim 1, it is characterised in that it is described first printing symmetrical dipole circuit board and The lateral length of the second printing symmetrical dipole circuit board is 25mm~60mm, and longitudinal length is 30mm~70mm, and thickness is 0.3mm~1mm.
- 6. navigator fix antenna according to claim 1, it is characterised in that the ground plane printed circuit board is two-sided Copper printed circuit board is covered, thickness is 0.5mm~2mm.
- 7. the navigator fix antenna according to claim 1 or 6, it is characterised in that the ground plane printed circuit board is Circular or square, diameter or the length of side are 30mm~220mm.
- 8. navigator fix antenna according to claim 1, it is characterised in that the antenna feeding network is 90 degree of 3dB electricity Bridge, 90 degree of 3dB electric bridges include first input end, the second input, output end and isolation end；The first input end connects the output end of first microstrip balun, and second input connects second micro-strip The output end of balun；The output end of 90 degree of 3dB electric bridges is used to export the telecommunications after handling via 90 degree of 3dB electric bridges Number.
- 9. navigator fix antenna according to claim 1, it is characterised in that first microstrip balun includes：First is defeated Enter end, the second input and output end；The first input end connects an oscillator in the symmetrical dipole, and second input connects the symmetrical dipole In another oscillator, the output end connects the antenna feeding network.
- 10. the navigator fix antenna according to Claims 2 or 3, it is characterised in that the symmetrical dipole covering signal that has a down dip Frequency be global navigation satellite system GNSS frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710842010.3A CN107645050A (en) | 2017-09-18 | 2017-09-18 | A kind of satellite navigation aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710842010.3A CN107645050A (en) | 2017-09-18 | 2017-09-18 | A kind of satellite navigation aerial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107645050A true CN107645050A (en) | 2018-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710842010.3A Pending CN107645050A (en) | 2017-09-18 | 2017-09-18 | A kind of satellite navigation aerial |
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| Country | Link |
|---|---|
| CN (1) | CN107645050A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1921341A (en) * | 2006-09-12 | 2007-02-28 | 京信通信技术(广州)有限公司 | Wave beam forming network with variable beam width |
| US20090204372A1 (en) * | 2007-11-27 | 2009-08-13 | Johnston Ronald H | Dual circularly polarized antenna |
| CN102938496A (en) * | 2012-11-20 | 2013-02-20 | 北京遥测技术研究所 | Wide-band measuring antenna |
| US20140111396A1 (en) * | 2012-10-19 | 2014-04-24 | Futurewei Technologies, Inc. | Dual Band Interleaved Phased Array Antenna |
| CN207265225U (en) * | 2017-09-18 | 2018-04-20 | 西安合众思壮导航技术有限公司 | A kind of satellite navigation aerial |
-
2017
- 2017-09-18 CN CN201710842010.3A patent/CN107645050A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1921341A (en) * | 2006-09-12 | 2007-02-28 | 京信通信技术(广州)有限公司 | Wave beam forming network with variable beam width |
| US20090204372A1 (en) * | 2007-11-27 | 2009-08-13 | Johnston Ronald H | Dual circularly polarized antenna |
| US20140111396A1 (en) * | 2012-10-19 | 2014-04-24 | Futurewei Technologies, Inc. | Dual Band Interleaved Phased Array Antenna |
| CN102938496A (en) * | 2012-11-20 | 2013-02-20 | 北京遥测技术研究所 | Wide-band measuring antenna |
| CN207265225U (en) * | 2017-09-18 | 2018-04-20 | 西安合众思壮导航技术有限公司 | A kind of satellite navigation aerial |
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