CN208570925U - A kind of measurement type GNSS antenna - Google Patents
A kind of measurement type GNSS antenna Download PDFInfo
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- CN208570925U CN208570925U CN201821102750.XU CN201821102750U CN208570925U CN 208570925 U CN208570925 U CN 208570925U CN 201821102750 U CN201821102750 U CN 201821102750U CN 208570925 U CN208570925 U CN 208570925U
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Abstract
The utility model discloses a kind of measurement type GNSS antennas, comprising: circuits mask lid, pcb board and the dielectric layer for being set to pcb board upper surface being stacked；In the upper surface of dielectric layer, setting includes the metal layer of concentric interior metal patch and outer metal patch, at least N number of slot is provided on the inside of the outer metal patch, extend outwardly on the outside of the interior metal patch and is provided at least N number of first ennation, the first through hole and the second through hole are provided on the dielectric layer, first through hole is connected to the interior metal patch and pcb board to constitute high frequency feed point, and the second through hole, which passes through, is connected to outer metal patch and pcb board to constitute low frequency feed point；In addition, the side of the medium is provided with dentation annulus, which connect with pcb board；Measurement type GNSS antenna structure is simple, can reduce the complexity of measurement type GNSS antenna processing, achievees the purpose that realize miniaturization measurement type GNSS antenna on the whole, improves Antenna Anti-jamming ability.
Description
Technical field
The utility model relates to antenna technical fields, and in particular to a kind of measurement type Global Navigation Satellite System (Global
Navigation Satellite System, GNSS) antenna.
Background technique
GNSS system includes the global positioning system (Global Positioning System, GPS) in the U.S., Russia
GLONASS (Global Navigation Satellite System, Glonass), Europe Galileo satellite navigation system
System (Galileo Satellite Navigation System, Galileo) and the Beidou satellite navigation system of China etc., quilt
It is widely used in all kinds of navigation terminals, and with the feasibility of high accuracy positioning, GNSS system is in military and special civilian neck
Domain all plays increasingly important role.
Since GNSS system and receiver terminal are always in the measurement for constantly pursuing higher precision, it is desirable that antenna can receive
The satellite of full galaxy, to improve the measurement accuracy of measurement antenna.Relatively common GNSS antenna includes being stacked on the market
The first metal layer, lower surface fitting printing electricity is arranged in pcb board, first medium plate and second medium plate, first medium plate upper surface
Road plate (Printed Circuit Board, PCB), feed probes pass through the first metal layer and first medium layer and pcb board connects
It connects, second metal layer is arranged in the upper surface of second medium plate, and feed probes pass through second metal layer, second dielectric layer, the first gold medal
By second metal layer connecting PCB board after category layer and first medium, the covering of full galaxy satellite-signal can be realized, but due to adopting
With double media, the section for resulting in GNSS antenna is higher, and the big weight of volume is big, higher cost.
Summary of the invention
The utility model discloses a kind of measurement type GNSS antennas, higher caused for solving existing GNSS antenna section
The big technical problem of the big weight of volume, reduces cost and can be improved anti-interference ability.
The utility model discloses a kind of measurement type GNSS antenna, the measurement type GNSS antenna includes pcb board and setting
Circuits mask lid in the pcb board lower surface, wherein the measurement type GNSS antenna further include: be set on the pcb board
The dielectric layer on surface；
The upper surface of the dielectric layer is provided with metal layer, and the metal layer includes concentric interior metal patch and outer metal
Patch is provided at least N number of slot on the inside of the outer metal patch, extends outwardly on the outside of the interior metal patch and is provided at least
N number of first ennation, first ennation are embedded in a slot；Wherein, the N is positive integer；
The first through hole and the second through hole are provided on the dielectric layer, wherein first through hole is through institute
It states dielectric layer and is connected to the interior metal patch and the pcb board to constitute high frequency feed point, second through hole is through institute
It states dielectric layer and is connected to the outer metal patch and the pcb board to constitute low frequency feed point.
Optionally, above-mentioned N can be with value for 8, or is 8 multiple.
As an alternative embodiment, at least M high frequency feed point slot is provided on the interior metal patch, through
The high frequency feed point that first through hole of the dielectric layer and the tie point of the interior metal patch are constituted is located at the high frequency
In feed point slot, corresponding first through hole of a high frequency feed point slot.
As an alternative embodiment, the dielectric layer side is provided with dentation annulus, the dentation annulus and institute
Pcb board is stated to be connected.
Wherein, by the way that dentation annulus is arranged in dielectric layer side, the low elevation axis ratio of GNSS antenna can be extended, GNSS is improved
The ability of Antenna Anti-jamming, to improve the quality of the low elevation angle search of satellite of system.
As an alternative embodiment, at least described M low frequency feed point slot is provided on the outer metal patch, one
A low frequency feed point slot corresponds to a low frequency of the tie point composition of second through hole and the outer metal patch
Feed point.
Optionally, above-mentioned M can be with value for 4, or is 4 multiple.
As an alternative embodiment, distance phase of the high frequency feed point described in any two to the dielectric layer center of circle
Deng, low frequency feed point being equidistant to the dielectric layer center of circle described in any two, and the high frequency feedback that any two are adjacent
Phase difference between point is first phase threshold value, and the phase difference between the adjacent low frequency feed point of any two is described first
Phase threshold.
Optionally, the phase difference between adjacent any two high frequency feed point is 90 degree, adjacent any two low frequency feedback
Phase difference between point is also 90 degree.
As an alternative embodiment, be additionally provided with short circuit hole on the dielectric layer, the short circuit hole is through institute
It states dielectric layer and is connected to the outer metal patch and the pcb board, short circuit hole described in any two to the dielectric layer center of circle
It is equidistant.
Wherein, in utility model, short circuit hole is that outer metal patch and pcb board are connected to through dielectric layer, realizes gold
Categoryization via hole can reduce the complexity of GNSS antenna processing.
As an alternative embodiment, extending outwardly on the outside of the outer metal patch is provided with the second ennation.
As an alternative embodiment, be additionally provided with mounting hole on the dielectric layer, the mounting hole is through institute
It states dielectric layer and is connected to the interior metal patch and the pcb board, and the mounting hole is set to the center location of the dielectric layer.
As an alternative embodiment, the high frequency feed point slot is U-type groove.
Wherein, in the present invention, high frequency feed point slot is set for high frequency feed point, and sets U-shaped for high frequency feed point slot
Slot, realizes the miniaturization of antenna, has achieved the purpose that realize miniaturization measurement type GNSS antenna on the whole.
As an alternative embodiment, the low frequency feed point slot is double L-shaped slot.
Wherein, in the present invention, low frequency feed point slot is set for low frequency feed point, and sets double L for low frequency feed point slot
Type groove, realizes the miniaturization of antenna, has achieved the purpose that realize miniaturization measurement type GNSS antenna on the whole.
Compared with prior art, the utility model has the following beneficial effects:
The utility model provides a kind of measurement type GNSS antenna of single-layer medium layer, is arranged in the upper surface of the dielectric layer
Resonance face of the metal layer as GNSS antenna, and dielectric layer is set on the upper surface of pcb board by lower surface, utilizes pcb board
Reflecting surface as GNSS antenna, it is only necessary in a face metallisation of dielectric layer, volume can be reduced, reduce cost.In addition, should
Metal layer includes concentric interior metal patch and outer metal patch, using being provided at least N number of slot on the inside of outer metal patch,
Then extending outwardly on the outside of interior metal patch and be provided at least N number of first ennation, the first ennation and slot correspond, and
And first ennation insertion corresponding groove in, then the first through hole is connect through the dielectric layer with interior metal patch and pcb board,
High frequency feed point is constituted, the second through hole is connect through the dielectric layer with outer metal patch and pcb board, low frequency feed point is constituted, from
And ensure to realize the performance of GNSS, meanwhile, GNSS antenna can be simplified using through hole, reduce the complexity of GNSS antenna processing
Degree achievees the purpose that realize miniaturization measurement type GNSS antenna on the whole.
Detailed description of the invention
It, below will be to needed in the embodiment attached in order to illustrate more clearly of the technical solution in the utility model
Figure is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the top view of measurement type GNSS antenna structure provided by the utility model；
Fig. 2 is the side structure schematic diagram of measurement type GNSS antenna provided by the utility model；
Fig. 3 is the structural schematic diagram in the high-frequency resonant face of measurement type GNSS antenna provided by the utility model；
Fig. 4 is the structural schematic diagram in the low-frequency resonant face of measurement type GNSS antenna provided by the utility model；
Fig. 5 is the positive structure schematic of the dielectric layer of measurement type GNSS antenna provided by the utility model；
Fig. 6 is the dentation circular ring structure schematic diagram of measurement type GNSS antenna provided by the utility model；
Fig. 7 is the passive directional diagram of measurement type GNSS antenna low frequency provided by the utility model；
Fig. 8 is that the axis of measurement type GNSS antenna low frequency provided by the utility model compares directional diagram；
Fig. 9 is the low-frequency range passive gain curve graph of measurement type GNSS antenna provided by the utility model；
Figure 10 is the passive directional diagram of measurement type GNSS antenna high frequency provided by the utility model；
Figure 11 is that the axis of measurement type GNSS antenna high frequency provided by the utility model compares directional diagram；
Figure 12 is the high band passive gain curve graph of measurement type GNSS antenna provided by the utility model；
Figure 13 be measurement type GNSS antenna provided by the utility model at 1.22GHz with/without setting dentation annulus and
Axis when at 1.57GHz with/without setting dentation annulus compares curve comparison figure.
Specific embodiment
Below in conjunction with the attached drawing in the utility model, the technical solution in the utility model is carried out clearly and completely
Description, it is clear that described embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on this
Embodiment in utility model, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, fall within the protection scope of the utility model.
In the present invention, term " on ", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outside",
" in ", "vertical", "horizontal", " transverse direction ", the orientation or positional relationship of the instructions such as " longitudinal direction " be orientation based on the figure or
Positional relationship.These terms are not intended to limit indicated primarily to better describe the utility model and embodiment
Device, element or component must have particular orientation, or be constructed and operated with particular orientation.
Also, above-mentioned part term is other than it can be used to indicate that orientation or positional relationship, it is also possible to for indicating it
His meaning, such as term " on " also are likely used for indicating certain relations of dependence or connection relationship in some cases.For ability
For the those of ordinary skill of domain, the concrete meaning of these terms in the present invention can be understood as the case may be.
In addition, term " installation ", " setting ", " being equipped with ", " connection ", " connected " shall be understood in a broad sense.For example, it may be solid
Fixed connection, is detachably connected or monolithic construction；It can be mechanical connection, or electrical connection；It can be directly connected, either
It indirectly connected through an intermediary, or is two connections internal between device, element or component.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In addition, term " first ", " second " etc. are mainly used for distinguishing different devices, element or component (specifically
Type and construction may it is identical may also be different), be not intended to show or implies meaning showing device, element or component
Relative importance and quantity.Unless otherwise indicated, the meaning of " multiple " is two or more.
Measurement type GNSS antenna provided by the utility model will be described in detail by specific embodiment below.
Also referring to Fig. 1 to Fig. 6, wherein measurement type GNSS antenna provided by the utility model can include: pcb board 5,
It is set to the circuits mask lid 6 of 5 lower surface of pcb board and is set to the dielectric layer 3 of 5 upper surface of pcb board.
Wherein, the upper surface of the dielectric layer 3 is provided with metal layer, which includes concentric interior metal patch 1 and outer
Metal patch 2, the inside of the outer metal patch 2 are provided at least N number of slot 21, and extend outwardly setting on the outside of the interior metal patch 1
There is at least N number of first ennation 11, first ennation 11 is embedded in a slot 21；
The first through hole 31 and the second through hole 32 are provided on the dielectric layer 3, wherein first through hole 31 through
The dielectric layer 3 is connected to interior metal patch 1 and pcb board 5 to constitute high frequency feed point, and the second through hole 32 is through the dielectric layer 3
Outer metal patch 2 and pcb board 5 are connected to constitute low frequency feed point.
Optionally, above-mentioned N can be also possible to 8 multiple, the utility model is not specifically limited in this embodiment with value 8.
It should be noted that in the present invention, the baseplate material using single medium as Antenna Design is situated between in single layer
The design of GNSS antenna is realized in matter: being uniformly arranged (laying) one layer of metal layer conduct especially by the upper surface of dielectric layer 3
The resonance face of GNSS antenna, and directly using pcb board as the reflecting surface of GNSS antenna, to reduce lamination, it can reduce section height
Degree realizes volume miniaturization to reduce the overall volume of GNSS antenna.
Optionally, dielectric layer 3 is mainly made of low-k, constant low-loss high frequency material.For example, dielectric layer 3 can be with
It is made of air dielectric or ceramic dielectric.The cross sectional shape of the dielectric layer 3 is rounded or polygon is (for example, quadrangle, five
Side shape and hexagon etc.).Wherein, by using the dielectric layer of low-k 3, the radiation conductance of GNSS antenna can be made
Increase, Q value reduces, to extend the bandwidth of GNSS antenna.
Preferably, it can be uniformly arranged (laying) layers of copper on dielectric layer 3, can also be other metal layers, this reality certainly
It is not limited this with novel.Still optionally further, a silver layer can also be plated on the metal layer to reduce copper loss.
It should be noted that incorporated by reference to Fig. 1, Fig. 3 and Fig. 4, in the present invention only in the inside of outer metal patch 2
It is arranged for 16 slots 21, corresponding 16 the first ennations 11 of setting that extend outwardly on the outside of interior metal patch 1 and is illustrated.Its
In, the corresponding slot 21 of first ennation, the first ennation matches in embedded groove 21.The size of first ennation and slot 21
Match, is embedded in slot 21 so that the first ennation just matches.
As it can be seen that the measurement type GNSS antenna of above-mentioned introduced single-layer medium layer 3, is arranged by the upper surface of dielectric layer 3
Resonance face of the metal layer as GNSS antenna, and dielectric layer is set on the upper surface of pcb board 5 by lower surface, and pcb board is utilized
5 reflecting surface as GNSS antenna, it is only necessary in a face metallisation of dielectric layer 3, volume can be reduced, reduce cost.In addition,
The metal layer includes concentric interior metal patch 1 and outer metal patch 2, is provided at least using in the inside of outer metal patch 2
One slot 21, then extend outwardly on the outside of interior metal patch 1 the first ennation 11 of setting, and the first ennation 11 and slot 21 are one by one
It is corresponding, and in the first ennation 11 insertion corresponding groove 21, then the first through hole 31 is pasted through the dielectric layer 3 and interior metal
Piece 1 and pcb board 5 connect, and constitute high frequency feed point, and the second through hole 32 is through the dielectric layer 3 and outer metal patch 2 and pcb board 5
Connection constitutes low frequency feed point, so that it is guaranteed that realize the performance of GNSS, meanwhile, GNSS antenna can be simplified using through hole, reduced
The complexity of GNSS antenna processing achievees the purpose that realize miniaturization measurement type GNSS antenna on the whole.
As an alternative embodiment, please further combined with Fig. 1 to Fig. 6, be provided on above-mentioned interior metal patch 1 to
Few M high frequency feed point slot 15, the high frequency that the tie point of the first through hole 31 and interior metal patch 1 through dielectric layer 3 is constituted
Feed point is located in high frequency feed point slot 15, corresponding first through hole 31 of a high frequency feed point slot 15.Wherein, the first through hole 31
Through dielectric layer 3, one end of the first through hole 31 is connect with interior metal patch 1, and tie point is formed on interior metal patch 1
High frequency feed point, other end are connect with pcb board 5.In the present invention, by the way that high frequency feed point is arranged on interior metal patch 1
Slot 15 enables high frequency feed point to be located in the high frequency feed point slot 15.
As an alternative embodiment, being provided at least M low frequency feed point slot 26 on above-mentioned outer metal patch 2 (i.e.
Low frequency feed point slot 26 is equal with the quantity of high frequency feed point slot 15), a low frequency feed point slot 26 corresponds to one through dielectric layer 3
The low frequency feed point 22 that the tie point of second through hole 32 and outer metal patch 2 is constituted.Wherein, the second through hole 32 runs through dielectric layer
3, one end of the second through hole 32 is connect with outer metal patch 2, and tie point is formed in the low frequency feed point on outer metal patch 2,
Other end is connect with pcb board 5.In the present invention, by the way that low frequency feed point slot 15 is arranged on outer metal patch 2, and
Low frequency feed point slot 15 and low frequency feed point correspond.
Optionally, above-mentioned M can be also possible to 4 multiple, be not specifically limited in this embodiment in the utility model with value 4.
1 place face of metal patch is the interior resonance face in GNSS antenna resonance face, outer 2 institute of metal patch in it is appreciated that
In the outer resonance face that face is in GNSS antenna resonance face.Referring specifically to Fig. 3, interior resonance face where interior metal patch 1 can be with
For symmetrical plane, in order to realize the miniaturization of interior resonance antenna, interior metal patch 1 can be circular metal plate, and in circle
16 the first ennations 11 are set on the outside of shape sheet metal, and the first ennation 11 can be rectangle minor matters, and can pass through adjusting
The length and width of first ennation 11, can effectively adjust the resonance frequency of high frequency.It should be noted that when the first ennation 11 is got over
Long, the resonance point of high frequency is more toward low frequency offset, but it is too long to work as the first ennation 11, it is meant that the slot in outer resonance face is longer, outer humorous
The current path in vibration face is longer, not only causes low-frequency resonant point to shift, the gain of low frequency also can be with decline.Therefore, it needs
It combines the inside and outside frequency in resonance face and in order to solve this problem the performance of respective antenna is set on interior metal patch 1
It sets M high frequency feed point slot 15 (the utility model is illustrated for 4, and corresponding above-mentioned 4 the first through holes 31), and
The high frequency feed point slot 15 is U-type groove, and the position of high frequency feed point is located inside U-type groove, before not changing outer resonance face size
It puts, extends the current path in interior resonance face, be also adjustable the frequency of the resonance of high frequency, and do not interfere with the property of low-frequency antenna
Energy.Wherein, in the present invention, by the size of adjusting U-type groove, GNSS antenna size can also about be reduced 18%,
To be further reduced GNSS antenna volume.
Referring specifically to Fig. 4, the outer resonance face where outer metal patch 2 is symmetrical plane, and interior resonance face concentric, outside
The inside of metal patch 2 opens up 16 slots 21, and slot 21 can be rectangular channel.The position of rectangular channel and the first of interior resonance face extend
Body 11 (rectangle minor matters) corresponds.Further, second ennation 27 can also be set in the outside of outer metal patch 2, the
Two ennations 27 can be rectangle minor matters, can be preferably provided with 4 the second ennations 27.Due to the second ennation 27 size not
It can exceed that the size of dielectric layer 3, therefore, the adjusting of the second ennation 27 is also limited, then is set on outer 2 outside of metal patch
There is low frequency feed point slot 26, which can be double L-shaped slot, and quantity matches with high frequency feed point slot 15, Ke Yiyou
It is first 4, to realize the miniaturization of antenna, and the position of double L-shaped slot and low frequency feed point correspond.And the second ennation 27
It is corresponding with low frequency feed point 26 positions of slot, it can be as shown in Figure 4.In addition, in the present invention, adjusting U through the above way
The size of type groove, the size of antenna about reduce 14%, and the groove width of slot 21 and low frequency feed point slot 26 can be 0.8-1mm, slot
Width should not be too wide, otherwise the backward radiation enhancing of antenna, and normal direction gain reduction, groove width also cannot be meticulous, is otherwise not achieved
The effect of miniaturization.
It should also be noted that, any two high frequency feed point being equidistant to 3 center of circle of dielectric layer, the feedback of any two low frequency
Point being equidistant to 3 center of circle of dielectric layer, and the phase difference between the adjacent high frequency feed point of any two is first phase threshold value,
Phase difference between the adjacent low frequency feed point 22 of any two is first phase threshold value, which can be 90 degree.
As an alternative embodiment, above-mentioned Fig. 1 to Fig. 6 please be recombine, the side of dielectric layer 3 be provided with to
A few dentation annulus 4, the dentation annulus 4 are connected with pcb board 5.
Optionally, the dentation annulus 4 set by the side of dielectric layer 3 can be multiple tooth annulus, including annulus bottom 42
With the tooth 41 for being set to annulus bottom 42, with can multipath resist interference, which can be the multiple tooth circle of metal
Ring.On dentation annulus 4 number of tooth 41 be it is N number of, the spacing of two teeth 41 in circumferential direction between be divided into M degree, be evenly distributed in Jie
On 3 side of matter layer, wherein it is preferred that N*M=360, the number of tooth 41 is more (i.e. N is bigger), and the axial ratio bandwidth of GNSS antenna is wider,
Multipaths restraint ability is stronger, and the normal direction gain of antenna is bigger, when the number of tooth 41 increases to certain quantity, the performance base of antenna
This is constant, once the number of tooth 41 determines, then can determine the spacing between two teeth 41.Preferably, the width of tooth 41 can be with
Width for 2-3mm, tooth 41 is too narrow, is not easy to fabricate, too wide, and adjacent tooth 41 can be made to be connected, and is equivalent to entire
Side is surrounded by metal entirely, and multipaths restraint is not achieved and improves effect of the axis than performance.The radius and dielectric layer 3 of dentation annulus 4
Radius it is equally big, be close to the side of dielectric layer 3, the height of tooth 41 is equal to dielectric layer 3 plus the height of annulus bottom 42
Highly, dentation annulus 4 is connected with pcb board 5.The height of dentation annulus 4 can be 3-5mm, and the thickness of dentation annulus 4 can be
1mm, the height of tooth 41 can be 5-7mm.Using dentation dentation annulus 4 can not only extended antenna axial ratio bandwidth, improve method
To and phase center stability, while the multipaths restraint ability of antenna can also be improved, improve low elevation gain.
As an alternative embodiment, above-mentioned Fig. 1 to Fig. 6 please be recombine, it is additionally provided on above-mentioned dielectric layer 3 short
Road hole 20, the short circuit hole 20 are connected to outer metal patch 2 and pcb board 5 through dielectric layer 3, the short circuit hole 20 to the circle of dielectric layer 3
The distance of the heart being equidistant to 3 center of circle of dielectric layer with high frequency feed point, and the short circuit hole 20 to 3 center of circle of dielectric layer distance with it is low
Frequency feed point 22 is equidistant to 3 center of circle of dielectric layer.
Wherein, in the present invention, designed short circuit hole 20 is through hole, and without metallization, one end is connected to outer
On metal patch 2 (resonance face), the other end is connected on pcb board 5 (reflecting surface), is solved the problems, such as metallization VIA, is made antenna
It simplifies the structure, reduces the complexity of processing.
In addition, the surface wave of interior metal patch 1 and outer metal patch 2 can be caused if the substrate of dielectric layer 3 is thicker, and
Thicker substrate also necessarily causes the coaxial through hole of feed to increase, and can carry out biggish input inductance to aerial band, in order to inhibit
The thickness of medium substrate obtains broadband character, then by the way that short circuit hole 26 is arranged near low frequency feed point, is drawn with offsetting coaxial feed
The inductance characteristic entered.The size of short circuit hole 26 matches with the second pipe perforation 32, i.e. the diameter of short circuit hole 26 is more than or equal to
The diameter of second pipe perforation 32, and as close as the first through hole 32.
As an alternative embodiment, above-mentioned Fig. 1 to Fig. 6 please be recombine, peace is additionally provided on above-mentioned dielectric layer 3
Hole 10 is filled, which is connected to interior metal patch 1 and pcb board 5 through dielectric layer 3, and the mounting hole 10 is set to medium
The center location of layer 3.
Below by interval M=5 degree a with the number N=72 of tooth 41 on above-mentioned dentate gyrus ring 4, between two teeth 41, tooth
Width is 2.5mm, tooth height 6mm, for annulus height is 4mm, and the feeding classification of GNSS antenna are as follows: the 4 of Fig. 1 to Fig. 4
A first through hole 31 is corresponding in turn to 0 ° of high frequency band (1.53~1.62GHz), 90 °, 180 ° and 270 ° of four phase feed points；4
Second through hole 32 successively respectively corresponds 0 ° of low-frequency band (1.16~1.28GHz), 90 °, 180 ° and 270 ° of four phase feed points, surveys
The performance test results of amount type GNSS antenna are as follows:
The performance test results of antenna low frequency are as shown in Figure 7 to 9.Referring to Fig. 7, Fig. 7 is provided by the utility model
The passive directional diagram of measurement type GNSS antenna.Wherein, (a) in Fig. 7 is passive directional diagram at 1.16GHz, in Fig. 7
It (b) be the passive directional diagram at 1.22GHz, (c) in Fig. 7 is the passive directional diagram at 1.28GHz.It can be seen that low
The directional diagram high degree of symmetry of frequency antenna, and in greatest irradiation direction, the cross polarization level of antenna are less than -38dB, and
1.22GHz, the gain that 20 ° of antenna elevation angle are -1.05dBi.
Referring to Fig. 8, the axis that Fig. 8 is measurement type GNSS antenna provided by the utility model compares directional diagram；Wherein, in Fig. 8
It (a) be measurement type GNSS antenna in the axis under 1.16GHz is that measurement type GNSS antenna exists than (b) in directional diagram, Fig. 8
Axis under 1.22GHz is axis at 1.28GHz than directional diagram than (c) in directional diagram, Fig. 8, from figure 8, it is seen that measurement
The 3dB axial ratio bandwidth of type GNSS antenna is up to ± 100 °.
Referring to Fig. 9, Fig. 9 is the low-frequency range passive gain curve graph of measurement type GNSS antenna provided by the utility model.
From fig. 9, it can be seen that antenna gain is greater than 5.8dBi in the frequency range of 1.16-1.28GHz, maximum gain reaches
7.2dBi。
Can be seen that low-frequency antenna not only in conjunction with Fig. 7 to Fig. 9 has the performance in broadband, high-gain, also has wide angle axis
Than characteristics such as, low-cross polarization and low elevation angle high-gains.
The performance test results of antenna high frequency are as shown in Figure 10 to Figure 12.Wherein, (a) in Figure 10 is in 1.53GHz
Passive directional diagram, (b) in Figure 10 is the passive directional diagram in 1.575GHz, and (c) in Figure 10 is in 1.62GHz
Passive directional diagram.As seen from Figure 10, the directional diagram high degree of symmetry of high frequency antenna, and in greatest irradiation direction, antenna
Cross polarization level is less than -42dB.From (b) of Figure 10 as can be seen that in 1.57GHz, the gain that 20 ° of antenna elevation angle is-
0.5dBi。
(a) is axis at 1.53GHz than directional diagram in Figure 11, in Figure 11 (b) be axis at 1.575GHz suppose to
Scheme, (c) is that the axis at 1.62GHz compares directional diagram in Figure 11.It can be seen from figure 11 that the 3dB axial ratio bandwidth maximum of antenna reaches
To ± 85 °.It can be recognized from fig. 12 that antenna gain is greater than 5.5dBi, maximum gain in the frequency range of 1.16-1.28GHz
Reach 7.0dBi.
Can be seen that high frequency antenna also in conjunction with Figure 10 to Figure 12 has the performance in broadband, high-gain, also has wide angle axis
Than characteristics such as, low-cross polarization and low elevation angle high-gains.
Figure 13 is please referred to, Figure 13 is for measurement type GNSS antenna provided by the utility model with/without setting tooth at 1.22GHz
Shape annulus and at 1.57GHz with/without setting dentation annulus when axis compare curve comparison figure, wherein in Figure 13 solid line indicate
There is chokes ring, dotted line indicates no chokes ring.As can be seen from Figure 13, in the metal dentate gyrus of the lateral layout dentation of dielectric layer 3
Ring 4 can be improved the multipaths restraint ability of antenna, the axial ratio bandwidth of extended antenna.Wherein, as shown in (a) in Figure 13, low
When frequency 1.22GHz, before not set dentation annulus 4, the axial ratio bandwidth of antenna is ± 80 °, is arranged after dentation annulus 4, day
The axial ratio bandwidth of line reaches ± 100 °, it is seen then that can obvious extended antenna low frequency axial ratio bandwidth by setting dentation annulus 4.Such as figure
Shown in (b) in 13, in high frequency 1.57GHz, before not set dentation annulus 4, the axial ratio bandwidth of antenna is ± 75 °, if
After setting dentation annulus 4, the axial ratio bandwidth of antenna reaches ± 80 °, it is seen then that although bright not as low frequency for the improvement of axis ratio
It shows, but still has ± 5 ° of improvement.Therefore by setting dentation annulus 4, can not only extended antenna be axial ratio bandwidth, moreover it is possible to improve day
Line low elevation gain.
In conclusion using single-layer medium layer 3, interior metal patch 1 and outer metal patch 2, and on 3 outside of dielectric layer
The annulus (dentation annulus 4) of dentation is set, not only in metal patch 1 and outer metal patch 2 separate, within metal patch 1 and outer
The combined form of metal patch 2 can also extend outer metal patch in the design for realizing full range GNSS antenna on single-layer medium layer 3
The current path on 2 surfaces, achievees the purpose that miniaturization.
U-type groove is used on interior metal patch 1, realizes the miniaturization of high frequency antenna；Using double L on outer metal patch 2
Type groove realizes the miniaturization of low-frequency antenna.Each patch is all made of that amplitude is equal, 90 ° of symmetrical four port feeding classification of difference,
Not only guaranteed while high stable phase center but also extended 3dB axial ratio bandwidth.In the annulus of the lateral layout dentation of dielectric layer 3, into
One step improves the multipaths restraint ability of antenna, improves the low elevation angle and the normal direction gain of antenna, also extends the axial ratio bandwidth of antenna.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium include read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), programmable read only memory (Programmable Read-only Memory, PROM), erasable programmable is read-only deposits
Reservoir (Erasable Programmable Read Only Memory, EPROM), disposable programmable read-only memory (One-
Time Programmable Read-Only Memory, OTPROM), the electronics formula of erasing can make carbon copies read-only memory
(Electrically-Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact
Disc Read-Only Memory, CD-ROM) or other disc memories, magnetic disk storage, magnetic tape storage or can
For carrying or any other computer-readable medium of storing data.
A kind of measurement type GNSS antenna disclosed by the utility model is described in detail above, tool used herein
Body example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand
The method and its core concept of the utility model；At the same time, for those skilled in the art, the think of according to the utility model
Think, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as pair
The limitation of the utility model.
Claims (10)
1. a kind of measurement type GNSS antenna, the measurement type GNSS antenna includes pcb board and is set to the pcb board lower surface
Circuits mask lid, which is characterized in that the measurement type GNSS antenna further include: be set to the dielectric layer of the pcb board upper surface；
The upper surface of the dielectric layer is provided with metal layer, and the metal layer includes concentric interior metal patch and outer metal patch
Piece is provided at least N number of slot on the inside of the outer metal patch, extends outwardly on the outside of the interior metal patch and is provided at least N
A first ennation, first ennation are embedded in a slot；Wherein, the N is positive integer；
The first through hole and the second through hole are provided on the dielectric layer, wherein first through hole is through being given an account of
Matter layer is connected to the interior metal patch and the pcb board to constitute high frequency feed point, and second through hole is through being given an account of
Matter layer is connected to the outer metal patch and the pcb board to constitute low frequency feed point.
2. measurement type GNSS antenna according to claim 1, which is characterized in that the dielectric layer side is provided with dentate gyrus
Ring, the dentation annulus are connected with the pcb board.
3. measurement type GNSS antenna according to claim 1 or 2, which is characterized in that be provided on the interior metal patch
At least M high frequency feed point slot, through first through hole of the dielectric layer and the tie point structure of the interior metal patch
At high frequency feed point be located in the high frequency feed point slot, corresponding first through hole of the high frequency feed point slot, institute
Stating M is positive integer.
4. measurement type GNSS antenna according to claim 3, which is characterized in that be provided at least on the outer metal patch
M low frequency feed point slot, a low frequency feed point slot correspond to the tie point structure of second through hole Yu the outer metal patch
At a low frequency feed point.
5. measurement type GNSS antenna according to claim 1, which is characterized in that high frequency feed point described in any two is described in
The dielectric layer center of circle is equidistant, low frequency feed point being equidistant to the dielectric layer center of circle described in any two, and any two
Phase difference between a adjacent high frequency feed point is first phase threshold value, between the adjacent low frequency feed point of any two
Phase difference be the first phase threshold value.
6. measurement type GNSS antenna according to claim 1, which is characterized in that be additionally provided with short circuit on the dielectric layer
Hole, the short circuit hole are connected to the outer metal patch and the pcb board, short circuit described in any two through the dielectric layer
Hole is equidistant to the dielectric layer center of circle.
7. measurement type GNSS antenna according to claim 1, which is characterized in that extend outwardly on the outside of the outer metal patch
It is provided with the second ennation.
8. measurement type GNSS antenna according to claim 1, which is characterized in that be additionally provided with installation on the dielectric layer
Hole, the mounting hole is connected to the interior metal patch and the pcb board through the dielectric layer, and the mounting hole is set to
The center location of the dielectric layer.
9. measurement type GNSS antenna according to claim 3, which is characterized in that the high frequency feed point slot is U-type groove.
10. measurement type GNSS antenna according to claim 4, which is characterized in that the low frequency feed point slot is double L-shaped slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821102750.XU CN208570925U (en) | 2018-07-11 | 2018-07-11 | A kind of measurement type GNSS antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821102750.XU CN208570925U (en) | 2018-07-11 | 2018-07-11 | A kind of measurement type GNSS antenna |
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| Publication Number | Publication Date |
|---|---|
| CN208570925U true CN208570925U (en) | 2019-03-01 |
Family
ID=65492877
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821102750.XU Active CN208570925U (en) | 2018-07-11 | 2018-07-11 | A kind of measurement type GNSS antenna |
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| Country | Link |
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| CN (1) | CN208570925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037929A (en) * | 2018-07-11 | 2018-12-18 | 广州吉欧电子科技有限公司 | A kind of measurement type GNSS antenna |
| CN117013249A (en) * | 2023-09-06 | 2023-11-07 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
-
2018
- 2018-07-11 CN CN201821102750.XU patent/CN208570925U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037929A (en) * | 2018-07-11 | 2018-12-18 | 广州吉欧电子科技有限公司 | A kind of measurement type GNSS antenna |
| CN109037929B (en) * | 2018-07-11 | 2024-04-05 | 广州吉欧电子科技有限公司 | Measurement type GNSS antenna |
| CN117013249A (en) * | 2023-09-06 | 2023-11-07 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
| CN117013249B (en) * | 2023-09-06 | 2024-04-05 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
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