CN106384880B - The double locating system crescent moon slot array antennas of Beidou GPS adjacent band - Google Patents
The double locating system crescent moon slot array antennas of Beidou GPS adjacent band Download PDFInfo
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- CN106384880B CN106384880B CN201610833271.4A CN201610833271A CN106384880B CN 106384880 B CN106384880 B CN 106384880B CN 201610833271 A CN201610833271 A CN 201610833271A CN 106384880 B CN106384880 B CN 106384880B
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- medium substrate
- crescent moon
- radiation patch
- array antennas
- locating system
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0018—Space- fed arrays
-
- 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
-
- 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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The double locating system crescent moon slot array antennas of Beidou GPS adjacent band, are related to a kind of microstrip antenna.Equipped with upper and lower medium substrate, set that there are two parallel radiation patch in upper medium substrate upper surface, the quadrangle of each radiation patch loads two crescent moon slot-coupled phase controlling structures；The mode that two radiation patch are all made of coaxial line offset-fed is fed, and feeding point is respectively perpendicular radiation patch center same distance where with offset, and upper medium substrate lower surface is reflection floor；Lower medium substrate upper surface is the floor of feeding network, it is close to conducting with upper medium substrate floor in the floor of the feeding network, lower medium substrate lower surface is equipped with one-to-two power splitter feeding network, it is fed by radiation patch of the coaxial through-hole to upper medium substrate, the phase difference output of power splitter is 90 °.Power splitter can influence the circular polarization characteristics of antenna entirety by the control of the amplitude and phase to two radiation patch.
Description
Technical field
The present invention relates to a kind of microstrip antennas, more particularly, to a kind of double locating system moon teeth spaces of Beidou GPS adjacent band
Gap array antenna.
Background technique
The science and technology of rapid development, so that satellite navigation industry is more widely applied.Global Satellite Navigation System
(GNSS) and internet, mobile communication become 21 century another mainstay together.Global Satellite Navigation System is to provide height
The services such as precision positioning, precision time service and satellite communication, play the part of more and more crucial role in human society.Currently, global
There are four large satellite navigation system, they are american global positioning system (GPS), Russian GLONASS system, Europe respectively
GALILEO system and Chinese dipper system.Constantly bringing forth new ideas and economic fast development for technology in future, will also have and more lead
Boat system occurs, while the multipath effect that the diffraction of radio wave, reflection and scattering are formed in complex environment makes triangular web
The shortcomings that more be difficult to control, cause the accuracy of navigation accuracy to decline.
And the critical component that antenna is received and dispatched as navigation signal, performance quality, directly affect the globality of navigation terminal
Energy.Compatible circular polarisation, multi-frequency multi-mode, miniaturization, wave beam forming are concentrated mainly on to the research of satellite navigation aerial at present and resisted
The fields such as interference, for the research shorter mention of high accuracy positioning.And constantly bringing forth new ideas with information technology, navigation application demand
Continuous improvement, people are more and more harsher to the accuracy and timeliness of positioning, and research meets the satellite of high accuracy positioning demand
The high performance satellite navigation antenna of navigation antenna is the task of top priority.
Satellite navigation terminal antennae needs to receive satellite-signal and is positioned, and number of satellite is more, and error is smaller, positioning accurate
It spends higher.Currently, Global Satellite Navigation System quantity is more and more, the satellite number of individual system is limited, positioning accuracy
It is limited, if the navigation system of multiple satellites is combined, that receives the star of signal for a fixed point receiver
Number increases multiple, and navigation and positioning accuracy will be promoted significantly.
And microstrip antenna itself has many quite brilliant performances, such as thin profile, light, low cost, easily conformal, easy
Production etc., has considerable use value, circular polarisation needed for readily satisfying satellite navigation aerial in satellite navigation system
Characteristic and multi-frequency Characteristic.
Just because of this, the research of the microstrip antenna of double locating system neighbour's frequency ranges is covered for wideband with highly important
Engineering value and theory significance.
Summary of the invention
The purpose of the present invention is to provide a kind of structure novels, the compatibility Beidou II satellite navigation system B2 haveing excellent performance
The double locating system crescent moon slot array antennas of the Beidou GPS adjacent band of frequency range and GPS satellite navigation system L2 frequency range.
The present invention is equipped with upper medium substrate and lower medium substrate, sets in upper medium substrate upper surface there are two parallel radiation
Patch, the quadrangle of each radiation patch load two crescent moon slot-coupled phase controlling structures, crescent moon slot-coupled phase control
Structure processed broadens impedance bandwidth and adjusts aerial radiation for controlling antenna element 2 to the difference and amplitude in orthogonal radiation gap
Polarization characteristic；The mode that two radiation patch are all made of coaxial line offset-fed is fed, and feeding point is respectively perpendicular and offset institute
In radiation patch center same distance, upper medium substrate lower surface is reflection floor；Lower medium substrate upper surface is feeding network
Floor, the floor of the feeding network be close to upper medium substrate floor conducting, lower medium substrate lower surface be equipped with one-to-two
Power splitter feeding network is fed by radiation patch of the coaxial through-hole to upper medium substrate, and the phase difference output of power splitter is
90°.Power splitter can influence the circular polarization characteristics of antenna entirety by the control of the amplitude and phase to two radiation patch.
The upper medium substrate can be used double-sided copper-clad ceramic substrate, double-sided copper-clad epoxy composite plate, two-sided cover silver-colored ceramics
Substrate or it is two-sided cover silver-colored epoxy composite plate, upper medium substrate relative dielectric constant is 3.0~9.0.
The lower medium substrate can be used double-sided copper-clad ceramic substrate, double-sided copper-clad epoxy composite plate, two-sided cover silver-colored ceramics
Substrate or it is two-sided cover silver-colored epoxy composite plate, lower dielectric-slab relative dielectric constant is 1.5~6.0.
The profile of the upper medium substrate can be rectangle, and wide is 50.0~86.0mm, and length can be 100~172mm, and thickness can
For 1.60~3.00mm.
The profile of the lower medium substrate can be rectangle, and wide is 50.0~86.0mm, and length can be 100~172mm, and thickness can
For 0.50~2.00mm.
The radiation patch can be used square radiation patch, the side length of square radiation patch can for 26.0~
48.0mm, the distance between two radiation patch can be 12~20mm.
The distance of the crescent moon slot-coupled phase controlling structure to adjacent side can be 1.80~3.10mm, crescent moon slot-coupled
The center of circle of phase controlling structure is located on the side of radiation patch, and outer arc radius can be 3.60~6.20mm, and interior arc radius can be
2.00~3.40mm, crescent moon are generated outside to inside by far from the corner portion right side, and crescent moon circular arc subtended angle can be 166 °~178 °.
The distance at square radiation patch center can be 7.80~13.5mm where the coaxial feed point deviates.
The wide of reflection floor is 50.0~86.0mm, and length can be 100~172mm.
The wide of the floor of the feeding network is 50.0~86.0mm, and length can be 100~172mm.
It is 2.50~4.30mm that the input terminal of the one-to-two power splitter feeding network is wide, length can for 13.0~
23.0mm, input terminal connect two a quarter impedance transformers, and impedance transformer width is 0.60~1.10mm, and length can be 25.0
~43.0mm, then be separately connected two transmission lines, the length difference of transmission line can be 24.0~41.6mm, it is wide for 1.30~
2.10mm, the Chip-R of two transmission lines centre connection, one 100 Ω.
Compared with conventional microstrip antennas, the present invention has the advantages that following prominent and remarkable result:
The present invention loads the radiation patch of two crescent moon slot-coupled phase controlling structures using corner, with conventional grooves knot
Structure is compared, and has better circular polarization characteristics, can be with by adjusting the distance of crescent moon slot-coupled phase controlling structure to adjacent side
The matching performance of antenna is adjusted, adjusting the size of arc radius and outer arc radius in crescent moon slot-coupled phase controlling structure then can be with
The trap degree at centre frequency is adjusted, in conjunction with square radiation patch, Beidou II satellite navigation system B2 frequency can be covered
Section and GPS satellite navigation system L2 frequency range；The present invention uses two-element antenna array, can pass through the feed width of control double base structure
Degree and phase make the amplitude of two radiation patch it is equal, 90 ° of phase phase difference, and then make antenna integrally there is good circular polarisation
Characteristic.Return loss of the present invention is small, and most of return loss is below -17.5dB in frequency band.This antenna structure is novel, performance is excellent
It is different, meet the needs of Beidou Navigation System and GPS navigation system positioning antenna, can be very good to be applied to high-precision satellite
Position antenna.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the side schematic view of the embodiment of the present invention.
Fig. 3 is the upper medium substrate upper surface schematic diagram of the embodiment of the present invention.
Fig. 4 is the lower dielectric-slab lower surface schematic diagram of the embodiment of the present invention.
Fig. 5 is the return loss (S of the embodiment of the present invention11) performance map.
The face xoy and xoz gain pattern when Fig. 6 is 1.222GHz of the embodiment of the present invention.Coordinate is polar coordinates in figure.
Axis when Fig. 7 is 1.222GHz of the embodiment of the present invention is than figure.Coordinate is polar coordinates in figure.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described.
It is referring to Fig.1 the upper surface good conductor layer of upper medium substrate with mark 1 in 2, Fig. 1, i.e. the radiation patch of upper surface,
Mark 2 is upper layer high-performance ceramic medium substrate in Fig. 2, and mark 3 is upper medium substrate lower surface good conductor layer in Fig. 2, i.e., instead
Penetrate floor.Mark 4 is lower medium substrate upper surface good conductor layer, the i.e. floor of feeding network in Fig. 2, and mark 5 is lower layer in Fig. 2
High-performance ceramic medium substrate, mark 6 is lower medium substrate lower surface good conductor layer, i.e. feeding network in Fig. 2.
Referring to Fig. 4, mark 7 is the Chip-R of 100 Ω, and the dielectric constant of upper medium substrate is 6.15, medium substrate wheel
Exterior feature is rectangle, long 120 ± 0.1mm of Sub2, wide 60.0 ± 0.1mm of Sub, 2.5 ± 0.1mm of thickness.Described two square radiation
The side length P of patch is 45.2 ± 0.1mm.Arc radius Pr1 is 3.1 ± 0.1mm in the crescent moon slot-coupled phase controlling structure,
Outer arc radius Pr is 3.9 ± 0.1mm, and the distance Load to adjacent side is 2.5 ± 0.1mm, and crescent moon circular arc subtended angle deg is 170 °.Institute
The distance Gap for stating two radiation patch is 16.0 ± 0.1mm.Patch centre distance Fx where the feeding point deviates is 9.5 ±
0.1mm。
Referring to Fig. 2 and Fig. 4, the dielectric constant of lower medium substrate is 4.4, with a thickness of 1.00mm, the one-to-two power splitter
Feeding network is made of incidence end, a quarter impedance transformer and output end, the wide W1 of feeding network incidence end be 3.5 ±
0.1mm, long L1 are 19.5 ± 0.1mm, and a quarter impedance transformer L2 is 14.5 ± 0.1mm, and L3 is 13.5 ± 0.1mm, wide
W2 is 0.8 ± 0.1mm, and outer arc radius r1 is 2.0 ± 0.1mm, and interior arc radius r2 is 1.2 ± 0.1mm, one transmission lines of output end
L4 be 5.7 ± 0.1mm, L6 be 45.0 ± 0.1mm, L7 be 7.9 ± 0.1mm, L8 be 16.5 ± 0.1mm, wide 1.6 ± 0.1mm,
The long L4 of another transmission lines is 5.7 ± 0.1mm, and L5 is 39.0 ± 0.1mm, and wide W3 is 1.6 ± 0.1mm.
Referring to Figure 1 and Figure 3, the length 120 ± 0.1mm, wide 60.0 ± 0.1mm on the reflection floor.
Referring to Fig. 2 and Fig. 4, the feeding network floor long 120 ± 0.1mm, wide 60.0 ± 0.1mm.
It can be seen that inventive antenna in required frequency band 1.205GHz~1.238GHz referring to Fig. 5, return loss S11
Respectively less than -20dB, the return loss at center frequency point 1.222GHz is -29dB, and absolute bandwidth 33MHz, return loss S11 are small
It is wider in the bandwidth of -10dB (i.e. VSWR is less than 2), reach 400MHz or more.
Referring to Fig. 6, the face xoz gain pattern and the face xoy gain pattern when being 1.222GHz.
Referring to Fig. 7, the axis of antenna is than figure when being 1.222GHz.
Generally the antenna have structure novel, have excellent performance and be compatible with Beidou II satellite navigation system B2 frequency range and
The characteristics of GPS satellite navigation system L2 frequency range.
Referring to table 1, table 1 give manufacture mismachining tolerance of the invention to antenna 1.222GHz influence situation.
Table 1
Note: data have certain redundancy in table 1, there is certain relevance between each parameter, and what is provided is equalization characteristic, can root
According to need optimum structural parameter complete special designing.
Claims (10)
1. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band, it is characterised in that be equipped with upper medium substrate under
Medium substrate is set in upper medium substrate upper surface there are two parallel radiation patch, and the quadrangle of each radiation patch loads two
A crescent moon slot-coupled phase controlling structure, the moon the gap between teeth be arc structure, the center of circle is located on patch side, remote from patch edges
Extend from vertex to close to apex angle direction, and two months the gap between teeths of same vertex are symmetrical about patch diagonal line,
Crescent moon slot-coupled phase controlling structure by adjustment structure size for changing equivalent electrical length, improve 2 antenna elements
Impedance matching, bandwidth and circular polarization radiation characteristic broaden impedance bandwidth and adjust the polarization characteristic of aerial radiation；Two radiation patches
The mode that piece is all made of coaxial line offset-fed is fed, feeding point be respectively perpendicular radiation patch center where with offset it is identical away from
From upper medium substrate lower surface is reflection floor；Lower medium substrate upper surface is the floor of feeding network, the feeding network
Conducting is close on floor with upper medium substrate floor, and lower medium substrate lower surface is equipped with one-to-two power splitter feeding network, by same
Shaft through-hole feeds the radiation patch of upper medium substrate, and the phase difference output of power splitter is 90 °.
2. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
Upper medium substrate using double-sided copper-clad ceramic substrate, double-sided copper-clad epoxy composite plate, two-sided cover silver-colored ceramic substrate or two-sided cover silver
Epoxy composite plate, upper medium substrate relative dielectric constant are 3.0~9.0.
3. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
Lower medium substrate using double-sided copper-clad ceramic substrate, double-sided copper-clad epoxy composite plate, two-sided cover silver-colored ceramic substrate or two-sided cover silver
Epoxy composite plate, lower dielectric-slab relative dielectric constant are 1.5~6.0.
4. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
The profile of upper medium substrate is rectangle, and width is 50.0~86.0mm, and a length of 100~172mm, thickness is 1.60~3.00mm.
5. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
The profile of lower medium substrate is rectangle, and width is 50.0~86.0mm, and a length of 100~172mm, thickness is 0.50~2.00mm.
6. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
For radiation patch using square radiation patch, the side length of square radiation patch is 26.0~48.0mm, two radiation patch it
Between distance be 12~20mm.
7. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
The distance of crescent moon slot-coupled phase controlling structure to adjacent side is 1.80~3.10mm, crescent moon slot-coupled phase controlling structure
The center of circle is located on the side of radiation patch, outer arc radius be 3.60~6.20mm, interior arc radius be 2.00~3.40mm, crescent moon by
It is generated outside to inside far from the corner portion right side, crescent moon circular arc subtended angle is 166 °~178 °.
8. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
The distance at square radiation patch center is 7.80~13.5mm where coaxial feed point deviates.
9. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that described
The width for reflecting floor is 50.0~86.0mm, a length of 100~172mm；
The width on the floor of the feeding network is 50.0~86.0mm, a length of 100~172mm.
10. the double locating system crescent moon slot array antennas of Beidou GPS adjacent band as described in claim 1, it is characterised in that institute
The input terminal width for stating one-to-two power splitter feeding network is 2.50~4.30mm, a length of 13.0~23.0mm, input terminal connection two
A a quarter impedance transformer, impedance transformer width is 0.60~1.10mm, a length of 25.0~43.0mm, then is separately connected two
Transmission lines, the length difference of transmission line are 24.0~41.6mm, and width is 1.30~2.10mm, connection one among two transmission lines
The Chip-R of 100 Ω.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107425262B (en) * | 2017-06-13 | 2023-12-22 | 东南大学 | Slot coupling plane four-arm spiral circularly polarized antenna manufactured on glass dial plate |
| KR102162228B1 (en) | 2018-07-05 | 2020-10-06 | 동우 화인켐 주식회사 | Antenna structure and display device including the same |
| CN112259963A (en) * | 2020-11-04 | 2021-01-22 | 北京微纳星空科技有限公司 | Satellite data transmission antenna |
| CN112510354B (en) * | 2020-11-23 | 2023-03-24 | 抖音视界有限公司 | Antenna and electronic equipment |
| CN113964522B (en) * | 2021-09-27 | 2022-11-18 | 华南理工大学 | Miniaturized differential feed dual-polarized C-band patch antenna |
| CN114336043B (en) * | 2022-01-13 | 2023-03-10 | 广东分数维无线科技有限公司 | Miniaturized integrated phased-array antenna and design method thereof |
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| DE10027508A1 (en) * | 2000-06-06 | 2001-12-13 | Lutz Rothe | Dual-band sector antenna for mobile radio used in e.g. vehicle, includes sector-shaped conductive plate supported movably above other circular plate having arcuate slit, via a dielectric foam spacer |
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