CN108232446B - High-precision antenna - Google Patents
High-precision antenna Download PDFInfo
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- CN108232446B CN108232446B CN201810167148.2A CN201810167148A CN108232446B CN 108232446 B CN108232446 B CN 108232446B CN 201810167148 A CN201810167148 A CN 201810167148A CN 108232446 B CN108232446 B CN 108232446B
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- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The embodiment of the invention discloses a high-precision antenna, which is characterized in that the physical size of the antenna is reduced by folding a radiation patch on a substrate, so that the purpose of miniaturization of the antenna is achieved, and the antenna provided by the invention can cover the B1, B2 and B3 frequency bands of high-precision Beidou (second generation of Beidou) positioning satellite signals and the wireless communication frequency band of 755 MHz-787 MHz through a specific radiation patch structure, so that the antenna can be used for satellite signal reception and wireless communication between ground equipment.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a high-precision antenna.
Background
At present, the high-precision positioning demand of China shows explosive growth, and according to the national conditions, the Beidou high-precision positioning and navigation application of China can play a great potential in the aspects of surveying and mapping, precise agriculture, unmanned aerial vehicles, forestry, electric power, intelligent transportation, maritime affairs, precise machine control and the like. High-precision positioning of about 1 meter or sub-meter level is achieved, and differential satellite positioning technology and real-time dynamic technology (Real Time Kinematic, RTK) are available. The differential satellite positioning method can achieve sub-meter positioning precision or below, and if the satellite reference base station and the terminal are within 10 km, the differential technology can eliminate the deviation of part of ionized layers, satellite orbits, clocks and troposphere, so as to achieve sub-meter positioning precision.
The reference base station and the user terminal of the existing Beidou high-precision positioning foundation enhancement system have two functions: the satellite positioning system has the functions of high-precision positioning satellite signal receiving and differential positioning information communication. The satellite signal is received by a satellite receiving antenna, and for the field or temporary occasions without public communication network facilities such as 3G/4G and the like, the communication function is realized by a special communication transceiver module or a communication transceiver, and the communication transceiver antenna and the satellite signal receiving antenna for realizing the wireless communication function are independent and separated, which is not beneficial to the portability and miniaturization of user terminal equipment and cannot meet the requirement of equipment miniaturization of a fast-deployment high-precision positioning enhancement system applied to the field or temporary occasions.
Disclosure of Invention
The embodiment of the invention provides a high-precision antenna, which realizes the integrated design of a receiving and transmitting antenna for differential information communication between a high-precision Beidou (second generation Beidou) navigation satellite signal receiving antenna and ground equipment.
The embodiment of the invention provides a high-precision antenna, which comprises the following components: the antenna comprises a substrate, a radiation patch and a feed port;
the radiation patch is arranged on the surface of the substrate;
the radiation patch includes: a first meandering patch, a second meandering patch, and a third meandering patch;
the first tortuous patch and the second tortuous patch are respectively connected with the feed port, and the first tortuous patch and the second tortuous patch are symmetrically arranged along the axis where the feed port is located;
the first and second meandering patches each include: a first straight patch, a second straight patch, and a third straight patch;
the third meandering patch includes: a fourth straight patch, a fifth straight patch, and a sixth straight patch;
the first straight patch, the second straight patch and the third straight patch are sequentially arranged from inside to outside;
the first straight patch, the second straight patch, the third straight patch, the fourth straight patch and the fifth straight patch are parallel;
the fourth straight patch and the fifth straight patch are positioned between the two first straight patches;
the first end of the first straight patch being aligned with and in communication with the first end of the second straight patch;
the second end of the second straight patch is aligned with and in communication with the first end of the third straight patch;
the second end of the third straight patch is communicated with the feed port;
two ends of the sixth straight patch are respectively connected with the first end of the fourth straight patch and the first end of the fifth straight patch;
the second end of the fourth straight patch is communicated with the first zigzag patch, and the second end of the fifth straight patch is communicated with the second zigzag patch;
the length of the first straight patch is 11.5mm, and the length of the second straight patch is 16mm;
the widths of the first straight patch, the second straight patch and the third straight patch are all 2.5mm;
the width of the fourth straight patch is 2.375mm, and the width of the fifth straight patch is 2.5mm;
the distance between the first straight patch and the second straight patch is 7mm;
the distance between the second straight patch and the third straight patch is 3mm;
the length of the fourth straight patch and the fifth straight patch is 17.3mm;
the length of the sixth straight patch is 10.375mm, and the width of the sixth straight patch is 2mm;
the length of the third straight patch is 26.3mm, and the distance between the two third straight patches is 43mm.
Preferably, the substrate is an FR4 board.
Preferably, the thickness of the substrate is 0.508mm, the relative dielectric constant is 2.2, and the dielectric loss tangent is 0.009.
From the above technical solutions, the embodiment of the present invention has the following advantages:
the embodiment of the invention provides a high-precision antenna, which can be used for achieving the purpose of miniaturization of the antenna by folding and shrinking the physical size of the antenna on a substrate, and can cover the B1, B2 and B3 frequency bands of high-precision Beidou (second generation of Beidou) positioning satellite signals and the wireless communication frequency band of 755 MHz-787 MHz through a specific radiation patch structure, so that the antenna can be used for satellite signal reception and wireless communication between ground equipment.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of a high-precision antenna according to the present invention;
FIG. 2 is a schematic structural view of a first meandering patch;
FIG. 3 is a schematic structural view of a second meandering patch;
FIG. 4 is a schematic structural view of a third meandering patch;
fig. 5 is a schematic diagram of the reflection coefficient (S11) of the antenna;
fig. 6 is an H-plane radiation pattern of the antenna at f=0.76 GHz;
fig. 7 is an H-plane radiation pattern of the antenna at f=1.4 GHz;
fig. 8 is a gain diagram of the antenna.
Detailed Description
The embodiment of the invention provides a high-precision antenna, which realizes the integrated design of a receiving and transmitting antenna for differential information communication between a high-precision Beidou (second generation Beidou) navigation satellite signal receiving antenna and ground equipment.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 4, the present invention provides a high-precision antenna, comprising: the radiation patch comprises a substrate 1, a radiation patch 2 and a feed port 3, wherein the radiation patch 2 is arranged on the surface of the substrate 1.
The radiating patch 2 comprises three main parts: the first meandering patch 21, the second meandering patch 22, and the third meandering patch 23, the first meandering patch 21 and the second meandering patch 22 are connected with the power supply port 3, respectively, the first meandering patch 21 and the second meandering patch 22 are arranged with the axis symmetry where the power supply port 3 is located, and in this embodiment, the first meandering patch 21 and the second meandering patch 22 are arranged with bilateral symmetry, and the third meandering patch 23 is located therebetween.
The first and second meandering patches 21 and 22 each include: first straight patch 201, second straight patch 202, and third straight patch 203, third meandering patch 23 includes: fourth straight patch 301, fifth straight patch 302, and sixth straight patch 303.
The first straight patch 201, the second straight patch 202 and the third straight patch 203 are sequentially arranged from inside to outside, the first straight patch 201, the second straight patch 202, the third straight patch 203, the fourth straight patch 301 and the fifth straight patch 302 are parallel, and the fourth straight patch 301 and the fifth straight patch 302 are located between the two first straight patches 201.
The first end of the first straight patch 201 is aligned with and communicates with the first end of the second straight patch 202, the second end of the second straight patch 202 is aligned with and communicates with the first end of the third straight patch 203, and the second end of the third straight patch 203 communicates with the feed port 3. It will be appreciated that the radiating patch 2 comprises two sets of first straight patches 201, second straight patches 202 and third straight patches 203, and that the first set of first straight patches 201, second straight patches 202 and third straight patches 203 on one side are mutually communicated to form a bent first meandering patch 21, and that the second set of first straight patches 201, second straight patches 202 and third straight patches 203 on the other side are mutually communicated to form a bent second meandering patch 22, so that the first meandering patch 21 and the second meandering patch 22 are bilaterally symmetrical.
The two ends of the sixth straight patch 303 are respectively connected with the first end of the fourth straight patch 301 and the first end of the fifth straight patch 302, the second end of the fourth straight patch 301 is communicated with the first meandering patch 21, and the second end of the fifth straight patch 302 is communicated with the second meandering patch 22. The position of the fourth straight patch 301 communicating with the first meandering patch 21 is located: the connection position between the third straight patch 203 of the first meandering patch 21 and the feeding port 3 is located at the connection position between the fifth straight patch 302 and the second meandering patch 22: at the communication patch between the third straight patch 203 of the second meandering patch 22 and the feed port 3.
The length of the first straight patch is 11.5mm and the length of the second straight patch is 16mm. The widths of the first straight patch 201, the second straight patch 202 and the third straight patch 203 are all 2.5mm, and it is understood that the widths of the communication patches between the first straight patch 201 and the second straight patch 202, the second straight patch 202 and the third straight patch 203, and the third straight patch 203 and the feed port 3 are all 2.5mm. The fourth straight patch 301 has a width of 2.375mm, the fifth straight patch 302 has a width of 2.5mm, the distance between the first straight patch 201 and the second straight patch 202 is 7mm, the distance between the second straight patch 202 and the third straight patch 203 is 3mm, the lengths of the fourth straight patch 301 and the fifth straight patch 302 are 17.3mm, the length of the sixth straight patch 303 is 10.375mm, the width is 2mm, the length of the third straight patch 203 is 26.3mm, and the distance between the two third straight patches 203 is 43mm. By optimizing the geometric parameters of the antenna patch, the antenna patch works in a required frequency band, and the H-plane radiation pattern of the antenna is omni-directional.
Further, the substrate was an FR4 board, the thickness of the substrate was 0.508mm, the relative dielectric constant was 2.2, and the dielectric loss tangent was 0.009. The input load of this antenna is set to 27+ j201 ohms.
Due to the wireless communication requirements: the antenna has the omnidirectional working characteristic so as to avoid communication dead angles, has higher gain and power capacity so as to improve the communication distance, and the coverage frequency band of the communication transceiver antenna is 755-787 MHz. Therefore, the invention adopts the bending path to design the antenna, thereby realizing the miniaturization of the antenna. The invention reduces the physical size of the antenna by folding the radiation patch, achieves the purpose of miniaturization of the antenna, optimizes the geometric parameters of the antenna, achieves the antenna frequency band required by a system, meets the communication requirement, and is convenient for integration.
The reflection coefficient (S11) diagram of the antenna designed by the invention is shown in fig. 5, and the frequency band of I S11I < 10dB is 0.67-0.88GHz and 1.16-1.66GHz, so that the frequency band coverage requirement of the design is completely met.
The H-plane radiation patterns of the antenna designed by the invention are shown in fig. 6 and 7, and the antenna is omni-directional at 0.76GHz and 1.4 GHz. The H-plane patterns are all omni-directional or nearly omni-directional.
The gain of the antenna designed by the invention is shown in figure 8, the peak gain of the antenna is more than 2.48dB in the required frequency band, and the gain reaches more than 2dB in the high frequency band of 1.3GHz, thereby meeting the gain index requirement of the antenna design.
Because the communication transceiver antenna and the satellite signal receiving antenna of the wireless communication function of the prior antenna technology are independent and separated, the portable and miniaturized user terminal equipment is not facilitated, and the requirement of equipment miniaturization of a rapidly deployed high-precision positioning enhancement system applied to the field or temporary occasion cannot be met. The antenna provided by the invention covers the B1, B2 and B3 frequency bands of high-precision Beidou (second generation of Beidou) positioning satellite signals and the 755 MHz-787 MHz wireless communication frequency band, and has two functions: the satellite signal receiving function of high-precision positioning and the communication function of differential positioning information and the like. The antenna of the invention combines two functions of satellite signal receiving and communication and two frequency bands into one antenna, and is designed on the same substrate.
The antenna provided by the invention can be used for the user terminal of the Beidou high-precision positioning foundation enhancement system, so that the user terminal can realize satellite signal receiving and ground wireless communication by using one antenna, and the miniaturization of the user terminal is facilitated. The length and width of the antenna are only 48mm multiplied by 26.3mm, and the antenna is small-sized, thereby being beneficial to miniaturization of the user terminal.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. A high-precision antenna, comprising: the antenna comprises a substrate, a radiation patch and a feed port;
the radiation patch is arranged on the surface of the substrate;
the radiation patch includes: a first meandering patch, a second meandering patch, and a third meandering patch;
the first tortuous patch and the second tortuous patch are respectively connected with the feed port, and the first tortuous patch and the second tortuous patch are symmetrically arranged along the axis where the feed port is located;
the first and second meandering patches each include: a first straight patch, a second straight patch, and a third straight patch;
the third meandering patch includes: a fourth straight patch, a fifth straight patch, and a sixth straight patch;
the first straight patch, the second straight patch and the third straight patch are sequentially arranged from inside to outside;
the first straight patch, the second straight patch, the third straight patch, the fourth straight patch and the fifth straight patch are parallel;
the fourth straight patch and the fifth straight patch are positioned between the two first straight patches;
the first end of the first straight patch being aligned with and in communication with the first end of the second straight patch;
the second end of the second straight patch is aligned with and in communication with the first end of the third straight patch;
the second end of the third straight patch is communicated with the feed port;
two ends of the sixth straight patch are respectively connected with the first end of the fourth straight patch and the first end of the fifth straight patch;
the second end of the fourth straight patch is communicated with the first zigzag patch, and the second end of the fifth straight patch is communicated with the second zigzag patch;
the communication position of the fourth straight patch and the first zigzag patch is positioned at the communication patch between the third straight patch of the first zigzag patch and the feed port;
the length of the first straight patch is 11.5mm, and the length of the second straight patch is 16mm;
the widths of the first straight patch, the second straight patch and the third straight patch are all 2.5mm;
the width of the fourth straight patch is 2.375mm, and the width of the fifth straight patch is 2.5mm;
the distance between the first straight patch and the second straight patch is 7mm;
the distance between the second straight patch and the third straight patch is 3mm;
the length of the fourth straight patch and the fifth straight patch is 17.3mm;
the length of the sixth straight patch is 10.375mm, and the width of the sixth straight patch is 2mm;
the length of the third straight patch is 26.3mm, and the distance between the two third straight patches is 43mm.
2. The high precision antenna of claim 1, wherein the substrate is an FR4 board.
3. The high-precision antenna according to claim 2, wherein the substrate has a thickness of 0.508mm, a relative dielectric constant of 2.2, and a dielectric loss tangent of 0.009.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167148.2A CN108232446B (en) | 2018-02-28 | 2018-02-28 | High-precision antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167148.2A CN108232446B (en) | 2018-02-28 | 2018-02-28 | High-precision antenna |
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| Publication Number | Publication Date |
|---|---|
| CN108232446A CN108232446A (en) | 2018-06-29 |
| CN108232446B true CN108232446B (en) | 2023-09-12 |
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| CN201810167148.2A Active CN108232446B (en) | 2018-02-28 | 2018-02-28 | High-precision antenna |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199336A (en) * | 2012-12-24 | 2013-07-10 | 厦门大学 | Double-frame and notched four-bridge bridging microstrip antenna applied to compass system |
| CN103956584A (en) * | 2014-04-29 | 2014-07-30 | 陕西海通天线有限责任公司 | Handheld dual-mode miniaturized user machine antenna |
| CN105305046A (en) * | 2015-10-23 | 2016-02-03 | 福州大学 | Electromagnetic coupling feed navigation transmitting-receiving antenna of 1st generation of Beidou satellite |
| CN105896104A (en) * | 2016-04-11 | 2016-08-24 | 中国人民解放军国防科学技术大学 | LS dual-band high-precision antenna for Beidou satellite navigation system ground monitoring station |
-
2018
- 2018-02-28 CN CN201810167148.2A patent/CN108232446B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199336A (en) * | 2012-12-24 | 2013-07-10 | 厦门大学 | Double-frame and notched four-bridge bridging microstrip antenna applied to compass system |
| CN103956584A (en) * | 2014-04-29 | 2014-07-30 | 陕西海通天线有限责任公司 | Handheld dual-mode miniaturized user machine antenna |
| CN105305046A (en) * | 2015-10-23 | 2016-02-03 | 福州大学 | Electromagnetic coupling feed navigation transmitting-receiving antenna of 1st generation of Beidou satellite |
| CN105896104A (en) * | 2016-04-11 | 2016-08-24 | 中国人民解放军国防科学技术大学 | LS dual-band high-precision antenna for Beidou satellite navigation system ground monitoring station |
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| CN108232446A (en) | 2018-06-29 |
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