CN112993595A - Satellite navigation positioning antenna and GNSS receiver - Google Patents
Satellite navigation positioning antenna and GNSS receiver Download PDFInfo
- Publication number
- CN112993595A CN112993595A CN202110514190.9A CN202110514190A CN112993595A CN 112993595 A CN112993595 A CN 112993595A CN 202110514190 A CN202110514190 A CN 202110514190A CN 112993595 A CN112993595 A CN 112993595A
- Authority
- CN
- China
- Prior art keywords
- plate
- bottom plate
- satellite navigation
- navigation positioning
- patch unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention relates to a satellite navigation positioning antenna and a GNSS receiver. At least one side surface of the bottom plate is set as a grounded metal surface. The low-frequency patch unit and the high-frequency patch unit are arranged on the side surface of the dielectric plate facing the bottom plate and are arranged around the periphery of the high-frequency patch unit. By adopting the design of the medium-free loading three-dimensional space meander and the double-frequency common-caliber coupling feed structure, the working bandwidth and the radiation gain of the antenna are improved, the processing cost of the satellite navigation positioning antenna is greatly reduced, and the weight of the antenna is reduced. And the antenna does not relate to the design of a complex process structure, and all parts are simple to form and the processing precision can be effectively guaranteed. By adopting the dielectric-free loading technology, the inherent surface wave effect and dielectric loss of a loading medium interface do not exist, so that the anti-interference performance and the radiation efficiency of the antenna are better.
Description
Technical Field
The invention relates to the technical field of satellite navigation, in particular to a satellite navigation positioning antenna and a GNSS receiver.
Background
The high-precision GNSS receiver, as the most mainstream satellite navigation positioning technology terminal product at present, is increasingly widely applied in the fields of modern surveying and mapping, transportation, public safety, rescue, modern agriculture and the like, and comprises a GNSS antenna (also called a satellite navigation positioning antenna), a data board module, a mainboard module, a data transmission communication device (communication mode: satellite signals, 2G/3G/4G, WIFI Bluetooth), an interface display device, a voice device, an information storage device, a battery and the like. In the operation mode, the GNSS receiver respectively collects data by taking one receiver as a reference station and taking the other receiver as a mobile station, and the reference station transmits observed values and coordinate information of the survey station to the mobile station through a data chain. The mobile station not only receives data from the reference station through a data chain, but also acquires GNSS observation data, forms a differential observation value in the system for real-time processing, and simultaneously provides millimeter-scale positioning information.
The traditional double-frequency navigation positioning antenna applied to the high-precision GNSS receiver is realized by adopting a dielectric loading laminated microstrip patch antenna technology, and the problems of unstable mass production consistency, large interference of dielectric surface wave effect, large volume, heavy weight, high cost and the like caused by narrow working bandwidth and poor dielectric uniformity are solved.
Disclosure of Invention
Therefore, it is necessary to overcome the defects of the prior art, and provide a satellite navigation positioning antenna and a GNSS receiver, which can greatly improve the radiation efficiency and the radiation gain of the antenna, and greatly reduce the design cost of the antenna.
The technical scheme is as follows: a satellite navigation positioning antenna, the satellite navigation positioning antenna comprising: the bottom plate and the dielectric plate are arranged at intervals, the dielectric plate is arranged on the bottom plate through the supporting columns, and at least one side surface of the bottom plate is provided with a grounded metal surface; the feed network is arranged on the bottom plate, the low-frequency patch unit and the high-frequency patch unit are arranged on the side surface of the bottom plate, which faces the dielectric plate, the low-frequency patch unit surrounds the periphery of the high-frequency patch unit, the microstrip coupling line is arranged on the side surface of the bottom plate, the position of the first end of the microstrip coupling line is opposite to that of the low-frequency patch unit, the second end of the microstrip coupling line is arranged in the middle of the dielectric plate, and the microstrip coupling line is electrically connected with the feed network through the feed connecting piece.
When the satellite navigation positioning antenna works, the first end of the microstrip coupling line and the low-frequency patch unit are respectively positioned on two side surfaces of the dielectric plate, and a gap is formed between the first end of the microstrip coupling line and the low-frequency patch unit and enables the first end of the microstrip coupling line and the low-frequency patch unit to be electrically coupled, so that the low-frequency patch unit outputs low-frequency signals to the feed network through the microstrip coupling line and the feed connecting piece or receives signals of the feed network. Similarly, the microstrip coupling line and the high-frequency patch unit are also provided with a gap, that is, the microstrip coupling line and the high-frequency patch unit are electrically coupled, so that the high-frequency patch unit outputs a high-frequency signal to the feed network or receives a signal of the feed network through the microstrip coupling line and the feed connecting piece. Therefore, by adopting the design of the medium-free loading three-dimensional space meander and the double-frequency common-caliber coupling feed structure, the working bandwidth and the radiation gain of the antenna are improved, the processing cost of the satellite navigation positioning antenna is greatly reduced, and the weight of the antenna is reduced. And the antenna does not relate to the design of a complex process structure, and all parts are simple to form and the processing precision can be effectively guaranteed. By adopting the dielectric-free loading technology, the edge reflection and dielectric loss of a loading medium do not exist, so that the anti-interference performance and the radiation efficiency of the antenna are better.
In one embodiment, the high-frequency patch unit comprises two polarized patches which are arranged to cross each other; the number of the microstrip coupling lines and the number of the feed connecting pieces are four, and the four microstrip coupling lines are electrically connected with the four feed connecting pieces in a one-to-one correspondence manner; two of the microstrip coupling lines are sequentially arranged along one of the polarization patches, and the other two of the microstrip coupling lines are sequentially arranged along the other polarization patch.
In one embodiment, the feed connection member is a feed pin, a first through hole corresponding to the feed pin is formed in the dielectric plate, a second through hole corresponding to the feed pin is formed in the polarization patch, one end of the feed pin is electrically connected with the microstrip coupling line, and the feed pin penetrates through the first through hole and the second through hole to be electrically connected with the feed network; and a coupling gap is formed between the feed pin and the hole wall of the second through hole.
In one embodiment, a first coupling loading plate is disposed at an end of the polarization patch, a second coupling loading plate is disposed on the base plate, the first coupling loading plate and the second coupling loading plate are disposed at an interval, and the second coupling loading plate is electrically connected to the metal surface.
In one embodiment, the low-frequency patch unit is printed or attached on the side surface of the dielectric slab facing the bottom plate; the low-frequency patch unit is of a closed annular structure; the high-frequency patch unit is printed or attached on the side surface of the dielectric plate facing the bottom plate.
In one embodiment, the satellite navigation positioning antenna further comprises a mounting piece, and the mounting piece penetrates through the dielectric plate and the supporting column and then is fixed on the bottom plate.
In one embodiment, the satellite navigation positioning antenna further comprises a plurality of grounding plates, and the grounding plates are circumferentially arranged at intervals in the peripheral area of the bottom plate; the grounding plate is electrically connected with the metal surface.
In one embodiment, a plurality of the ground plates are evenly spaced around the center of the bottom plate; the grounding plate comprises a first plate and a second plate which are electrically connected with each other, the included angle between the first plate and the second plate is a, and a is 60-120 degrees.
In one embodiment, the distance from the end of the grounding plate far away from the bottom plate to the bottom plate is S, and S is not more than 7 mm.
A GNSS receiver comprises the satellite navigation positioning antenna.
When the GNSS receiver works, the first end of the microstrip coupling line and the low-frequency patch unit are respectively positioned on two side surfaces of the dielectric plate, and a gap is formed between the first end of the microstrip coupling line and the low-frequency patch unit and enables the first end of the microstrip coupling line and the low-frequency patch unit to be electrically coupled, so that the low-frequency patch unit outputs a low-frequency signal to the feed network through the microstrip coupling line and the feed connecting piece or receives the signal of the feed network. Similarly, the microstrip coupling line and the high-frequency patch unit are also provided with a gap, that is, the microstrip coupling line and the high-frequency patch unit are electrically coupled, so that the high-frequency patch unit outputs a high-frequency signal to the feed network or receives a signal of the feed network through the microstrip coupling line and the feed connecting piece. Therefore, by adopting the design of the medium-free loading three-dimensional space meander and the double-frequency common-caliber coupling feed structure, the working bandwidth and the radiation gain of the antenna are improved, the processing cost of the satellite navigation positioning antenna is greatly reduced, and the weight of the antenna is reduced. And the antenna does not relate to the design of a complex process structure, and all parts are simple to form and the processing precision can be effectively guaranteed. By adopting the dielectric-free loading technology, the edge reflection and dielectric loss of a loading medium do not exist, so that the anti-interference performance and the radiation efficiency of the antenna are better.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a view structure diagram of a satellite navigation positioning antenna according to an embodiment of the invention;
FIG. 2 is a block diagram of another view angle of the GNSS antenna according to an embodiment of the present invention;
FIG. 3 is an exploded view of a satellite navigation positioning antenna according to an embodiment of the present invention;
FIG. 4 is a partially exploded view of a satellite navigation positioning antenna according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a satellite navigation positioning antenna according to an embodiment of the present invention when a dielectric plate is hidden;
FIG. 6 is an enlarged schematic view of FIG. 5 at P;
FIG. 7 is a schematic structural diagram of a side surface of a dielectric plate facing a bottom plate according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a side surface of a dielectric plate facing away from a bottom plate according to an embodiment of the present invention;
FIG. 9 is a graph of gain versus frequency for a satellite navigation positioning antenna in accordance with an embodiment of the present invention;
FIG. 10 is a graph of axial ratio versus frequency for a satellite navigation positioning antenna in accordance with an embodiment of the present invention;
fig. 11 is a graph of axial ratio versus angle (f =1.21 GHz) of a satellite navigation positioning antenna according to an embodiment of the invention;
FIG. 12 is a graph of axial ratio versus angle (f =1.585 GHz) for a satellite navigation positioning antenna according to an embodiment of the invention;
fig. 13 shows a radiation pattern of a satellite navigation positioning antenna according to an embodiment of the present invention (f =1.21 GHz);
fig. 14 shows a radiation pattern (f =1.585 GHz) of a satellite navigation positioning antenna according to an embodiment of the invention.
10. A base plate; 11. a second coupling load plate; 12. cutting; 13. a jack; 20. a support pillar; 30. a dielectric plate; 31. a first through hole; 40. a low frequency patch unit; 50. a high-frequency patch unit; 51. polarizing the patch; 511. a second through hole; 512. a first coupling load plate; 60. a microstrip coupling line; A. a first end; B. a second end; 70. a feed connection; 80. a mounting member; 90. a ground plate; 91. a first plate; 92. a second plate; 93. and (4) a bump.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1, 4 and 7, fig. 1 is a view structural diagram of a satellite navigation positioning antenna according to an embodiment of the present invention, fig. 4 is a partially exploded structural diagram of a satellite navigation positioning antenna according to an embodiment of the present invention, and fig. 7 is a structural diagram of a side surface of a dielectric plate 30 facing a bottom plate 10 according to an embodiment of the present invention. According to an embodiment of the present invention, the satellite navigation positioning antenna includes a bottom plate 10, a supporting pillar 20, a dielectric plate 30, a feeding network (not shown), a low frequency patch unit 40, a high frequency patch unit 50, a microstrip coupling line 60, and a feeding connection member 70. The bottom plate 10 is spaced apart from the dielectric plate 30. The dielectric plate 30 is mounted on the bottom plate 10 through the supporting posts 20, and at least one side surface of the bottom plate 10 is a grounded metal surface. The feed network is arranged on the base plate 10. The low-frequency patch unit 40 and the high-frequency patch unit 50 are both disposed on the side surface of the dielectric plate 30 facing the bottom plate 10, and the low-frequency patch unit 40 is disposed around the periphery of the high-frequency patch unit 50. The microstrip coupling line 60 is attached to the side surface of the dielectric board 30 away from the bottom board 10, the first end a of the microstrip coupling line 60 is opposite to the low frequency patch unit 40, the second end B of the microstrip coupling line 60 is located in the middle of the dielectric board 30, and the second end B of the microstrip coupling line 60 is electrically connected to the feed network through the feed connection element 70.
It should be noted that the position of the first end a of the microstrip coupling line 60 is opposite to the position of the low-frequency patch element 40, which means that the projection of the first end a of the microstrip coupling line 60 in the direction perpendicular to the board surface of the dielectric board 30 and the low-frequency patch element 40 are overlapped, overlapped or provided with a gap, that is, the position of the first end a of the microstrip coupling line 60 is closer to the low-frequency patch element 40.
When the satellite navigation positioning antenna works, because the first end a of the microstrip coupling line 60 and the low-frequency patch unit 40 are respectively located on two side surfaces of the dielectric plate 30, a gap is formed between the first end a of the microstrip coupling line 60 and the low-frequency patch unit 40, and the gap enables the first end a of the microstrip coupling line 60 and the low-frequency patch unit 40 to be electrically coupled in a coupling manner, so that the low-frequency patch unit 40 outputs a low-frequency signal to the feed network through the microstrip coupling line 60 and the feed connecting piece 70, or receives a signal of the feed network. Similarly, the microstrip coupling line 60 and the high-frequency patch unit 50 are also provided with a gap, that is, the microstrip coupling line 60 and the high-frequency patch unit 50 are electrically coupled, so that the high-frequency patch unit 50 outputs a high-frequency signal to the feeding network or receives a signal of the feeding network through the microstrip coupling line 60 and the feeding connection member 70. Therefore, by adopting the design of the medium-free loading three-dimensional space meander and the double-frequency common-caliber coupling feed structure, the working bandwidth and the radiation gain of the antenna are improved, the processing cost of the satellite navigation positioning antenna is greatly reduced, and the weight of the antenna is reduced. And the antenna does not relate to the design of a complex process structure, and all parts are simple to form and the processing precision can be effectively guaranteed. By adopting the dielectric-free loading technology, the edge reflection and dielectric loss of a loading medium do not exist, so that the anti-interference performance and the radiation efficiency of the antenna are better.
It is understood that the bottom plate 10 may be, for example, an insulating plate, a metal layer is disposed on one side surface of the bottom plate 10, and the metal layer is a metal surface connected to ground, and a circuit layer is disposed on the other side surface of the bottom plate 10, and the circuit layer is a power feeding network. Alternatively, the bottom plate 10 may also be a metal plate, the metal plate is grounded, so that both side surfaces of the bottom plate 10 are grounded, a circuit board is mounted on the bottom plate 10, and the feeding network is disposed on the circuit board.
Referring to fig. 1, 4 and 7, further, the high-frequency patch unit 50 includes two polarized patches 51, and the two polarized patches 51 are disposed to cross each other. The number of the microstrip coupling lines 60 and the number of the feed connectors 70 are four, and the four microstrip coupling lines 60 and the four feed connectors 70 are electrically connected in a one-to-one correspondence manner. Two of the microstrip coupling lines 60 are sequentially disposed along one of the polarized patches 51, and the other two microstrip coupling lines 60 are sequentially disposed along the other polarized patch 51. So, compare and adopt 8 to feed the technical scheme who realizes dual-frenquency signal transmission of point feed among the conventional art, only need 4 to feed the point coupling feed alright realize dual-frenquency signal transmission in this embodiment, and then realized antenna dual-frenquency and shared the four feed combinings output of bore coupling, the structure is simplified, and the cost is reduced relatively.
Referring to fig. 4, 5 and 8, fig. 5 is a schematic structural diagram illustrating a hidden dielectric plate 30 of a satellite navigation positioning antenna according to an embodiment of the present invention, and fig. 8 is a schematic structural diagram illustrating a side surface of the dielectric plate 30 facing away from the bottom plate 10 according to an embodiment of the present invention. Specifically, two polarized patches 51 are arranged in a crisscross manner, for example, wherein one polarized patch 51 is responsible for signals in the +45 ° direction, and the other polarized patch 51 is responsible for signals in the-45 ° direction, so that transmission of dual-polarized signals is realized. Alternatively, the high-frequency patch unit 50 may be provided with only one polarized patch 51, and single-polarized signal transmission is realized.
In addition, the microstrip coupling line 60 is specifically, for example, a rectangle with a constant line width, and certainly, the microstrip coupling line may also be a wavy line, or a coupling line with a line width that changes along the length direction of the microstrip coupling line, and is not specifically limited herein, and may be set correspondingly according to actual requirements.
Referring to fig. 3, 4 and 7, fig. 3 is an exploded structural diagram of a satellite navigation positioning antenna according to an embodiment of the invention. Further, the feed connector 70 is a feed pin, the dielectric plate 30 is provided with a first through hole 31 corresponding to the feed pin, the polarization patch 51 is provided with a second through hole 511 corresponding to the feed pin, one end of the feed pin is electrically connected to the microstrip coupling line 60, and the feed pin passes through the first through hole 31 and the second through hole 511 to be electrically connected to the feed network. The feed pin and the wall of the second through hole 511 are provided with a coupling gap. In this way, the feeding pin is coupled with the hole wall of the second through hole 511, and the high-frequency patch unit 50 may further couple and transmit the high-frequency signal to the feeding pin through the second through hole 511, and transmit the high-frequency signal to the feeding network through the feeding pin. Specifically, the feeding network is located on a side surface of the bottom plate 10 away from the dielectric plate 30, so that the feeding pin needs to penetrate through the bottom plate 10 and then be electrically connected to the feeding network.
Referring to fig. 4 to 6, fig. 6 shows an enlarged schematic view of fig. 5 at P. Further, the end of the polarization patch 51 is provided with a first coupling loading plate 512, and the base plate 10 is provided with a second coupling loading plate 11. The first coupling loading plate 512 and the second coupling loading plate 11 are disposed at an interval, and the second coupling loading plate 11 is electrically connected to the metal surface. Thus, the second coupling loading plate 11 is grounded, and when the first coupling loading plate 512 of the high-frequency patch unit 50 and the second coupling loading plate 11 are coupled with each other, capacitive loading is realized, so that a frequency reduction effect is achieved, and the miniaturization design of the high-frequency patch unit 50 can be realized.
Specifically, the first coupling loading plate 512 is obtained by bending the end of the polarized patch 51 vertically downward. The first coupling load plate 512 is spaced apart from the metal surface, and is not in contact with the metal surface.
Specifically, the two ends of the polarization patch 51 are respectively provided with the second coupling loading plates 11, the bottom plate 10 is provided with four second coupling loading plates 11, and the four second coupling loading plates 11 are respectively arranged in one-to-one correspondence with the four second coupling loading plates 11.
Referring to fig. 2, 4 and 6, fig. 2 is a structural diagram illustrating another view angle of a satellite navigation positioning antenna according to an embodiment of the invention. The bottom plate 10 is specifically, for example, a metal plate, and the second coupling loading plate 11 is obtained by stamping the metal plate. Specifically, in the process of forming the second coupling loading plate 11, the notch 12 is firstly formed on the bottom plate 10, and then the plate body in the notch 12 area is vertically bent on the bottom plate 10 by a stamping method to form the second coupling loading plate 11.
It should be noted that, in infringement contrast, the "first coupling loading plate 512" may be a part of the "polarized patch 51", that is, the "first coupling loading plate 512" is integrally formed with the "other part of the polarized patch 51"; or may be a separate component that is separable from the rest of the polarized patch 51, i.e., the first coupling load plate 512 may be manufactured separately and then integrated with the rest of the polarized patch 51. As shown in fig. 6, in one embodiment, the "first coupling load plate 512" is a part of the "polarized patch 51" that is integrally formed.
It should be noted that, in infringement comparison, the "second coupling loading plate 11" may be a "part of the bottom plate 10", that is, the "second coupling loading plate 11" is integrally formed with "other part of the bottom plate 10"; or a separate member that is separable from the rest of the base plate 10, i.e., the second coupling load plate 11, may be separately manufactured and then integrated with the rest of the base plate 10. As shown in fig. 6, in one embodiment, the "second coupling load plate 11" is a part of the "bottom plate 10" that is integrally formed.
Referring to fig. 3, 4 and 7, further, the low frequency patch unit 40 is printed or attached on a side surface of the dielectric board 30 facing the bottom board 10. The low frequency patch unit 40 is a closed loop structure. The high-frequency patch unit 50 is printed or attached on the side surface of the dielectric board 30 facing the base board 10.
Note that the closed loop structure refers to a structure that takes a certain point on the low-frequency patch unit 40 as a starting point and returns to the starting point after one round along the low-frequency patch unit 40.
It is understood that the outer edge of the closed loop structure may be circular or non-circular, and is not limited herein. When the outer edge of the closed loop structure is non-circular, the outer edge of the closed loop structure is provided with a convex portion or a concave portion or the like on the basis of, for example, an outer circle. Likewise, the inner edge of the closed loop structure may be circular or non-circular, and is not limited thereto. When the inner edge of the closed loop structure is non-circular, the inner edge of the closed loop structure is provided with a convex portion or a concave portion or the like on the basis of an inner circle, for example.
Referring to fig. 1, 3 and 5, in one embodiment, the satellite navigation positioning antenna further includes a mounting member 80. The mounting member 80 is fixed to the base plate 10 after penetrating through the dielectric sheet 30 and the support pillars 20. Specifically, the mounting member 80 is, for example, a pin, a screw, a rivet, or the like, and is not limited thereto, as long as the three of the medium plate 30, the supporting column 20, and the bottom plate 10 can be stably coupled and assembled. Of course, the support pillars 20 may be respectively clamped to the dielectric plate 30 and the bottom plate 10, so as to stably connect and assemble the dielectric plate 30, the support pillars 20, and the bottom plate 10 together, or the support pillars 20 are respectively adhered to the dielectric plate 30 and the bottom plate 10, so as to stably connect and assemble the dielectric plate 30, the support pillars 20, and the bottom plate 10 together, which is not limited herein, and may be set according to actual requirements.
Referring to fig. 1, 4 and 5, in one embodiment, the satellite navigation positioning antenna further includes a plurality of grounding plates 90. A plurality of ground plates 90 are circumferentially spaced apart at a peripheral region of the base plate 10. The ground plate 90 is electrically connected to the metal plane. Therefore, the antenna is used for improving and improving the low elevation gain of the antenna, so that the dual frequency bands (specifically, for example, the high frequency band is 1525MHz-1610MHz, and the low frequency band is 1160MHz-1280 MHz) of the antenna can obtain a wider axial ratio beam bandwidth, that is, the 3dB axial ratio beam bandwidth of the antenna is widened, so that more excellent low elevation satellite searching capability is obtained, meanwhile, the left-handed radiation at the back of the low frequency antenna is reduced, and the anti-multipath capability of the antenna is improved.
Referring to fig. 1, 4 and 5, further, a plurality of ground plates 90 are disposed at regular intervals around the center of the base plate 10. The ground plate 90 includes a first plate 91 and a second plate 92 electrically connected to each other, the first plate 91 and the second plate 92 have an included angle a, and a is 60 ° to 120 °. Specifically, a is 90 °. When a is 90 °, the interference field can be well resolved into two mutually perpendicular surfaces (the plate surface direction of the first plate 91 and the plate surface direction of the second plate 92) to be consumed and absorbed, and the effect of reducing the left-hand circular polarization gain in the lower half plane of the antenna radiation pattern is significant. In addition, when the included angle a between the first plate 91 and the second plate 92 is changed, the axial ratio beam bandwidth of the antenna can be changed. The first plate 91 and the second plate 92 are specifically rectangular plates, for example, but other shapes may be adopted, such as an arc-shaped plate, a stepped plate, and the like, and are not limited herein.
Referring to fig. 1, 4 and 5, in one embodiment, the distance S from the end of the ground plate 90 away from the bottom plate 10 to the bottom plate 10 is not greater than 7 mm. Therefore, the back radiation of the antenna can be effectively improved, the 3dB axial ratio wave beam bandwidth of the antenna can be effectively widened, and the multipath resistance of the antenna can be effectively improved.
Further, referring to fig. 2, the ground plate 90 is provided with a bump 93. The bottom plate 10 is provided with a receptacle 13 corresponding to the protrusion 93, and the protrusion 93 is mounted in the receptacle 13 and fixed on the bottom plate 10.
Referring to fig. 1, 4 and 7, in an embodiment, a GNSS receiver includes a satellite navigation positioning antenna according to any of the embodiments.
When the GNSS receiver operates, the first end a of the microstrip coupling line 60 and the low-frequency patch unit 40 are respectively located on two side surfaces of the dielectric slab 30, and a gap is formed between the first end a of the microstrip coupling line 60 and the low-frequency patch unit 40, and the gap enables the first end a of the microstrip coupling line 60 and the low-frequency patch unit 40 to be electrically coupled in a coupling manner, so that the low-frequency patch unit 40 outputs a low-frequency signal to the feed network through the microstrip coupling line 60 and the feed connecting member 70, or receives a signal of the feed network. Similarly, the microstrip coupling line 60 and the high-frequency patch unit 50 are also provided with a gap, that is, the microstrip coupling line 60 and the high-frequency patch unit 50 are electrically coupled, so that the high-frequency patch unit 50 outputs a high-frequency signal to the feeding network or receives a signal of the feeding network through the microstrip coupling line 60 and the feeding connection member 70. Therefore, by adopting the design of the medium-free loading three-dimensional space meander and the double-frequency common-caliber coupling feed structure, the working bandwidth and the radiation gain of the antenna are improved, the processing cost of the satellite navigation positioning antenna is greatly reduced, and the weight of the antenna is reduced. And the antenna does not relate to the design of a complex process structure, and all parts are simple to form and the processing precision can be effectively guaranteed. By adopting the dielectric-free loading technology, the edge reflection and dielectric loss of a loading medium do not exist, so that the anti-interference performance and the radiation efficiency of the antenna are better.
Referring to fig. 9 to 14, fig. 9 is a graph showing the variation of the gain of the satellite navigation positioning antenna with frequency according to an embodiment of the invention, and it can be seen from fig. 9 that the satellite navigation positioning antenna can implement dual-band broadband high-gain radiation. Fig. 10 is a graph showing the axial ratio of the satellite navigation positioning antenna according to an embodiment of the present invention as a function of frequency, and it can be seen from fig. 10 that the satellite navigation positioning antenna has a wide axial ratio bandwidth.
Fig. 11 shows a graph of an axial ratio of the satellite navigation positioning antenna according to an embodiment of the present invention (f =1.21 GHz) as a function of an angle, fig. 12 shows a graph of an axial ratio of the satellite navigation positioning antenna according to an embodiment of the present invention (f =1.585 GHz), and it can be seen from fig. 11 and fig. 12 that the satellite navigation positioning antenna has a wider 3dB directional axial ratio bandwidth in both a low frequency band and a high frequency band.
Fig. 13 shows a radiation pattern (f =1.21 GHz) of the satellite navigation and positioning antenna according to the embodiment of the invention, and fig. 14 shows a radiation pattern (f =1.585 GHz) of the satellite navigation and positioning antenna according to the embodiment of the invention. As can be seen from fig. 13 and 14, the satellite navigation positioning antenna has excellent low elevation radiation performance and multi-cross-polarization back radiation suppression capability in the low frequency band and the high frequency band, so as to effectively improve the multi-path suppression capability of the antenna.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A satellite navigation positioning antenna, comprising:
the bottom plate and the dielectric plate are arranged at intervals, the dielectric plate is arranged on the bottom plate through the supporting columns, and at least one side surface of the bottom plate is provided with a grounded metal surface;
the feed network is arranged on the bottom plate, the low-frequency patch unit and the high-frequency patch unit are arranged on the side surface of the bottom plate, which faces the dielectric plate, the low-frequency patch unit surrounds the periphery of the high-frequency patch unit, the microstrip coupling line is arranged on the side surface of the bottom plate, the position of the first end of the microstrip coupling line is opposite to that of the low-frequency patch unit, the second end of the microstrip coupling line is arranged in the middle of the dielectric plate, and the microstrip coupling line is electrically connected with the feed network through the feed connecting piece.
2. The satellite navigation positioning antenna of claim 1, wherein the high frequency patch unit comprises two polarization patches, and the two polarization patches are arranged to cross each other; the number of the microstrip coupling lines and the number of the feed connecting pieces are four, and the four microstrip coupling lines are electrically connected with the four feed connecting pieces in a one-to-one correspondence manner; two of the microstrip coupling lines are sequentially arranged along one of the polarization patches, and the other two of the microstrip coupling lines are sequentially arranged along the other polarization patch.
3. The satellite navigation positioning antenna according to claim 2, wherein the feeding connector is a feeding pin, a first through hole corresponding to the feeding pin is formed in the dielectric plate, a second through hole corresponding to the feeding pin is formed in the polarization patch, one end of the feeding pin is electrically connected to the microstrip coupling line, and the feeding pin passes through the first through hole and the second through hole and is electrically connected to the feeding network; and a coupling gap is formed between the feed pin and the hole wall of the second through hole.
4. The satellite navigation positioning antenna of claim 2, wherein a first coupling loading plate is disposed at an end of the polarization patch, a second coupling loading plate is disposed on the bottom plate, the first coupling loading plate and the second coupling loading plate are spaced apart from each other, and the second coupling loading plate is electrically connected to the metal surface.
5. The satellite navigation positioning antenna of claim 1, wherein the low frequency patch element is printed or attached on a side surface of the dielectric plate facing the bottom plate; the low-frequency patch unit is of a closed annular structure; the high-frequency patch unit is printed or attached on the side surface of the dielectric plate facing the bottom plate.
6. The antenna of claim 1, further comprising a mounting member, wherein the mounting member penetrates through the dielectric plate and the supporting pillar and is fixed to the bottom plate.
7. The satellite navigation positioning antenna of claim 1, further comprising a plurality of ground plates circumferentially spaced apart in a peripheral region of the bottom plate; the grounding plate is electrically connected with the metal surface.
8. The satellite navigation positioning antenna of claim 7, wherein a plurality of the ground plates are evenly spaced around a center of the bottom plate; the grounding plate comprises a first plate and a second plate which are electrically connected with each other, the included angle between the first plate and the second plate is a, and a is 60-120 degrees.
9. The satellite navigation positioning antenna of claim 7, wherein the end of the ground plate distal from the bottom plate is a distance S from the bottom plate, S being no greater than 7 mm.
10. A GNSS receiver characterized in that it comprises a satellite navigation positioning antenna according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514190.9A CN112993595B (en) | 2021-05-12 | 2021-05-12 | Satellite navigation positioning antenna and GNSS receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514190.9A CN112993595B (en) | 2021-05-12 | 2021-05-12 | Satellite navigation positioning antenna and GNSS receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112993595A true CN112993595A (en) | 2021-06-18 |
| CN112993595B CN112993595B (en) | 2022-04-15 |
Family
ID=76337614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110514190.9A Active CN112993595B (en) | 2021-05-12 | 2021-05-12 | Satellite navigation positioning antenna and GNSS receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112993595B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117060098A (en) * | 2023-10-11 | 2023-11-14 | 四川九洲电器集团有限责任公司 | Tightly coupled and common-caliber multiband communication navigation antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218311A (en) * | 2014-08-22 | 2014-12-17 | 华为技术有限公司 | Microstrip antenna and communication equipment |
| US20150303576A1 (en) * | 2012-11-21 | 2015-10-22 | Eseo | Miniaturized Patch Antenna |
| CN207883898U (en) * | 2017-12-28 | 2018-09-18 | 国网思极神往位置服务（北京）有限公司 | A kind of satellite navigation terminal antennae structure |
| CN110190386A (en) * | 2019-03-25 | 2019-08-30 | 西安电子科技大学 | A kind of broadband and wideangle axis compares circularly-polarized patch antenna |
| CN112753133A (en) * | 2018-09-28 | 2021-05-04 | 高通股份有限公司 | Multi-layer patch antenna |
-
2021
- 2021-05-12 CN CN202110514190.9A patent/CN112993595B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150303576A1 (en) * | 2012-11-21 | 2015-10-22 | Eseo | Miniaturized Patch Antenna |
| CN104218311A (en) * | 2014-08-22 | 2014-12-17 | 华为技术有限公司 | Microstrip antenna and communication equipment |
| CN207883898U (en) * | 2017-12-28 | 2018-09-18 | 国网思极神往位置服务（北京）有限公司 | A kind of satellite navigation terminal antennae structure |
| CN112753133A (en) * | 2018-09-28 | 2021-05-04 | 高通股份有限公司 | Multi-layer patch antenna |
| CN110190386A (en) * | 2019-03-25 | 2019-08-30 | 西安电子科技大学 | A kind of broadband and wideangle axis compares circularly-polarized patch antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117060098A (en) * | 2023-10-11 | 2023-11-14 | 四川九洲电器集团有限责任公司 | Tightly coupled and common-caliber multiband communication navigation antenna |
| CN117060098B (en) * | 2023-10-11 | 2023-12-22 | 四川九洲电器集团有限责任公司 | Tightly coupled and common-caliber multiband communication navigation antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112993595B (en) | 2022-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2346113B1 (en) | Dual-feed dual band antenna assembly and associated method | |
| US7161543B2 (en) | Antenna set for mobile devices | |
| US7812772B2 (en) | Antenna, and associated method, for a multi-band radio device | |
| US20030020656A1 (en) | Dual band planar high-frequency antenna | |
| CN102610909A (en) | Single-fed dual-bandwidth wave beam circular polarization antenna | |
| CN202585722U (en) | Double-band circular polarized antenna | |
| CN103326117A (en) | Broadband dual-polarization four-leaf clover plane antenna | |
| CN105576353B (en) | A kind of helical antenna | |
| CN111129704B (en) | Antenna unit and electronic equipment | |
| CN111029767A (en) | Miniaturized low-profile base station antenna unit | |
| CN109728429A (en) | A kind of differential feed dual polarization filter antenna inhibited with two multiplied frequency harmonics | |
| US7148848B2 (en) | Dual band, bent monopole antenna | |
| CN112993595B (en) | Satellite navigation positioning antenna and GNSS receiver | |
| CN101728636A (en) | Dual-band antenna | |
| JP3258819B2 (en) | Composite antenna | |
| CN112768888B (en) | Antenna array element and array antenna | |
| CN216161923U (en) | Microstrip positioning antenna for navigation | |
| CN111162379B (en) | Polarization adjustable antenna array based on double-layer patch antenna | |
| US9742064B2 (en) | Low height, space efficient, dual band monopole antenna | |
| CN210468106U (en) | Quadrifilar helix antenna assembly and communication equipment | |
| CN210137004U (en) | Millimeter wave planar quasi-yagi antenna element, array antenna, and phased array antenna | |
| CN107785654B (en) | Miniaturized strong coupling antenna | |
| TWI389388B (en) | Dual band flat antenna | |
| CN219658967U (en) | Cross dipole antenna and antenna array | |
| KR20090130521A (en) | Dual band circularly polarized microstrip antenna using folded structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |