CN104638367B - dual-band microstrip antenna - Google Patents
dual-band microstrip antenna Download PDFInfo
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- CN104638367B CN104638367B CN201510068389.8A CN201510068389A CN104638367B CN 104638367 B CN104638367 B CN 104638367B CN 201510068389 A CN201510068389 A CN 201510068389A CN 104638367 B CN104638367 B CN 104638367B
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- 239000000758 substrate Substances 0.000 claims abstract description 37
- 230000005404 monopole Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005493 welding type Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000000417 anti-transforming effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The embodiment of the invention discloses a kind of dual-band microstrip antenna, for having preferable omni-directional in less double-frequency micro-strip antenna physical dimension.A kind of dual-band microstrip antenna of the embodiment of the present invention includes：Substrate and the first frequency channel microstrip antenna and the second frequency channel microstrip antenna being arranged on substrate；First frequency channel microstrip antenna includes：The first antenna paster of the first area in the face of substrate first is arranged on, is arranged on the first earth plate of the first area in the face of substrate second, and the first feeding coaxial lines being connected respectively with first antenna paster and the first earth plate；Second frequency channel microstrip antenna includes：The second antenna patch of the second area in the face of substrate second is arranged on, is arranged on the second earth plate of the second area in the face of substrate first, and the second feeding coaxial lines being connected respectively with the second antenna patch and the second earth plate；A part for second feeding coaxial lines is fixed in the first ground plate area and/or a part for the first feeding coaxial lines is fixed in the second ground plate area.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of dual-band microstrip antenna.
Background technology
With the rapid development of radio communication, the demand of various data services, Antenna Design is mainly towards miniaturization, multifrequency
Section and broadband development, small form factor requirements antenna reduce own dimensions, and to adapt to, communication equipment integrated level is improved constantly, volume is got over
Carry out smaller development trend, microstrip antenna is that the antenna that conductor patch is formed is pasted on the medium substrate with earth plate, profit
With coaxial feeding, make to encourage electromagnetic field between conductor patch and earth plate, using gap to external radiation, microstrip antenna is by several
The development of 10 years, the extensive use in many fields, it has, and section is low, size is small, in light weight, cost is low, design is clever
The advantages that living diversified, and can combine and design with active device.
A kind of existing U-lag microstrip antenna as shown in figure 1, descend the paster 102 and earth plate on two sides on the substrate 101
103, the U-shaped microstrip antenna 105 on paster 102, U-shaped microstrip antenna 105 surrounds the distributing point 104 in scope, and distributing point 104 is logical
Coaxial feeder 106 is crossed to be connected with earth plate 103.
Another existing double-layer paster microstrip antenna is as shown in Fig. 2 earth plate 201 passes through between distributing point 205
Coaxial feeder 206 is connected with paster 202, and short-circuit wall 204 connects earth plate 201, paster 202 and short-circuit face 203.
But the microstrip antenna shown in Fig. 1 and Fig. 2 due to structure the problem of so that interfered between two frequency ranges, very
Difficulty realizes the preferable omni-directional of two-band, and physical dimension is larger.
The content of the invention
The embodiments of the invention provide a kind of dual-band microstrip antenna, for reducing influencing each other between two frequency ranges,
So that two frequency ranges all have preferable omni-directional.
In view of this, first aspect present invention provides a kind of dual-band microstrip antenna, including：
The first frequency channel microstrip antenna and the second frequency channel microstrip antenna of substrate and setting on the substrate；
First frequency channel microstrip antenna includes：It is arranged on the first antenna patch of the first area in the face of substrate first
Piece, is arranged on the first earth plate of the first area in the face of substrate second, and with the first antenna paster and described
The first feeding coaxial lines that one earth plate connects respectively；
Second frequency channel microstrip antenna includes：It is arranged on the second antenna patch of the second area in the face of substrate second
Piece, is arranged on the second earth plate of the second area in the face of substrate first, and with second antenna patch and described
The second feeding coaxial lines that two earth plates connect respectively；
A part for second feeding coaxial lines is fixed in second ground plate area and/or first feed
A part for coaxial line is fixed in second ground plate area.
With reference to first aspect present invention, in first aspect present invention first embodiment, the first antenna paster is folding
The antenna patch of folded dipole form, second antenna are the antenna patch of curve monopolar form.
With reference to first aspect present invention first embodiment, in first aspect present invention second embodiment, described first
Antenna patch includes：
First feed strip line, the first transformer section being connected with the first feed strip line, and hindered with described first
The folded dipole oscillator arms of anti-transforming section connection.
With reference to first aspect present invention second embodiment, in the embodiment of first aspect present invention the 3rd, the folding
Dipole element arm is arranged to symmetrical folding mode.
With reference to first aspect present invention second embodiment, in the embodiment of first aspect present invention the 4th, the folding
The end of dipole element arm is connected by via with first earth plate.
With reference to first aspect present invention second embodiment, in the embodiment of first aspect present invention the 5th, described first
Frequency channel microstrip antenna also includes：
It is arranged on the first earth plate electrical feeding connections of the first area in the face of substrate first, the first earth plate feedback
Electrical connection section is connected by the first via with first earth plate.
With reference to first aspect present invention first embodiment, in the embodiment of first aspect present invention the 6th, described second
Antenna patch includes：
Second feed strip line, and the shaped form monopole being connected with the second feed strip line.
With reference to the embodiment of first aspect present invention the 6th, in the embodiment of first aspect present invention the 7th, described second
Frequency channel microstrip antenna also includes：
It is arranged on the second earth plate electrical feeding connections of the second area in the face of substrate second, the second earth plate feedback
Electrical connection section is connected by the second via with second earth plate.
With reference to first aspect present invention first embodiment, first aspect present invention second embodiment, the present invention first
The embodiment of aspect the 3rd, the embodiment of first aspect present invention the 4th, the embodiment of first aspect present invention the 5th, the present invention
The embodiment of first aspect the 6th or the embodiment of first aspect present invention the 7th, the embodiment of first aspect present invention the 8th
In, first frequency channel microstrip antenna is 2.4GHz microstrip antennas；Second frequency channel microstrip antenna is 900MHz microstrip antennas.
With reference to first aspect present invention, in the embodiment of first aspect present invention the 9th, the first antenna paster and institute
State the antenna patch that the second antenna patch is folded dipole form；Or the first antenna paster and described second day
Line paster is the antenna patch of curve monopolar form.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
Substrate and the first frequency channel microstrip antenna and the second frequency channel microstrip antenna being arranged on substrate；First band microstrip
Antenna includes：The first antenna paster of the first area in the face of substrate first is arranged on, is arranged on the first area in the face of substrate second
The first earth plate, and the first feeding coaxial lines being connected respectively with first antenna paster and the first earth plate；Second frequency range
Microstrip antenna includes：The second antenna patch of the second area in the face of substrate second is arranged on, is arranged on the second of the face of substrate first
Second earth plate in region, and the second feeding coaxial lines being connected respectively with the second antenna patch and the second earth plate；Second
A part for feeding coaxial lines is fixed in the first ground plate area and/or a part for the first feeding coaxial lines is fixed on second
In ground plate area, so that influence of second frequency channel microstrip antenna to the first frequency channel microstrip antenna reduces, or, the first frequency
A feeding coaxial lines part for section is fixed in the region of the second earth plate, reduces the first frequency channel microstrip antenna to the second frequency range
The influence of microstrip antenna, therefore, two frequency ranges of the dual-band microstrip antenna have preferable omni-directional.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of U-lag microstrip antenna；
Fig. 2 is a kind of schematic diagram of double-layer paster microstrip antenna；
Fig. 3 is an a kind of schematic diagram of dual-band microstrip antenna in the embodiment of the present invention；
Fig. 4 is a kind of another schematic diagram of dual-band microstrip antenna in the embodiment of the present invention；
Fig. 5 is the S parameter test result schematic diagram of the first microstrip antenna of specific embodiment in the embodiment of the present invention；
Fig. 6 is the S parameter test result schematic diagram of the second microstrip antenna of specific embodiment in the embodiment of the present invention；
Fig. 7 is the Pattern measurement data result signal of the first microstrip antenna of specific embodiment in the embodiment of the present invention
Figure；
Fig. 8 is the Pattern measurement data result signal of the second microstrip antenna of specific embodiment in the embodiment of the present invention
Figure.
Embodiment
The embodiments of the invention provide a kind of dual-band microstrip antenna, for reducing influencing each other between two frequency ranges,
So that two frequency ranges all have preferable omni-directional.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
Below by specific embodiment, it is described in detail respectively.
Fig. 3 and Fig. 4 are referred to, the embodiment of the present invention provides a kind of dual-band microstrip antenna, including：
Substrate 301 and the first frequency channel microstrip antenna and the second frequency channel microstrip antenna being arranged on substrate；
First frequency channel microstrip antenna includes：The first antenna paster 306 of the first area 302 in the face of substrate first is arranged on,
The first earth plate 413 of the first area 303 in the face of substrate second is arranged on, and is grounded with first antenna paster 306 and first
The first feeding coaxial lines 407 and 408 that plate 413 connects respectively；
Second frequency channel microstrip antenna includes：The second antenna patch 307 of the second area 304 in the face of substrate second is arranged on,
The second earth plate 406 of the second area 305 in the face of substrate first is arranged on, and is grounded with the second antenna patch 307 and second
The second feeding coaxial lines 411 and 416 that plate 406 connects respectively；
A part for second feeding coaxial lines 411 is fixed in the region of the first earth plate 413 and/or the first feeding coaxial lines
407 part is fixed in the region of the second earth plate 406.
The part of feeding coaxial lines 411 of the second frequency range is fixed on the region of the first earth plate 413 it can be seen from more than
It is interior, influence of second frequency channel microstrip antenna to the first frequency channel microstrip antenna is reduced, or, the feeding coaxial lines one of the first frequency range
Part is fixed in the region of the second earth plate, reduces influence of first frequency channel microstrip antenna to the second frequency channel microstrip antenna,
Therefore, two frequency ranges of the dual-band microstrip antenna have preferable omni-directional.
In the embodiment of the present invention, refused for the concrete structure of the antenna patch 307 of first antenna paster 306 and/or second
Limit.For example, the antenna patch 307 of first antenna paster 306 and/or second, can be the antenna patch of dipole form,
It can also be the antenna patch of monopolar form, can also be loop aerial paster, or, it can also be other arbitrary structures
Antenna patch.
In some embodiments of the invention, the first antenna paster 306 is the antenna patch of folded dipole form, described
Second antenna patch 307 is the antenna patch of curve monopolar form.Described in detail with reference to Fig. 4.
First antenna paster 306 is folded dipole form in the embodiment of the present invention, including：
First feed strip line 402, the first feed strip line 402 connection the first transformer section 403, and with the first impedance
The folded dipole oscillator arms 409 that transforming section 403 connects, folded dipole oscillator arms 409 are arranged to symmetrical folding mode, roll over
The end of folded dipole element arm 409 is connected by via 404 with the first earth plate 413.
In addition, the first frequency channel microstrip antenna also includes：
The first earth plate electrical feeding connections 401 of the first area in first face are arranged on, the first earth plate feed connects
Socket part 401 is connected by the first via 410 with the first earth plate 413.
Specifically, the outer conductor of the first feeding coaxial lines 407 is connected with the first earth plate 413 by the first via 410, the
The inner wire 408 of one feeding coaxial lines is connected with the first feed strip line 402 of first antenna paster 306, the first feeding coaxial lines
407 and first the inner wires 408 of feeding coaxial lines be two sections of regions on same feeding coaxial lines.
Below please continue to refer to Fig. 4, in the embodiment of the present invention, the second antenna patch 307 is curve monopolar form, bag
Include：
Second feed strip line 415, and the shaped form monopole 417 being connected with the second feed strip line 415.
In addition, the second frequency channel microstrip antenna also includes：
The second earth plate electrical feeding connections 414 of the second area in the face of substrate second are arranged on, the second earth plate feed connects
Socket part 414 is connected by the second via 405 with the second earth plate 406.
Specifically, the outer conductor of the second feeding coaxial lines 411 is connected with the second earth plate 406 by the second via 405, the
The inner wire 416 of two feeding coaxial lines is connected with the second feed strip line 415 of the second antenna patch 307, and this second feed is coaxial
The inner wire 416 of the feeding coaxial lines of line 411 and second is two sections of regions on same feeding coaxial lines.
In the embodiment of the present invention, the second earth plate 406 is earth plate with groove, and first frequency channel microstrip antenna is
2.4GHz microstrip antenna；Second frequency channel microstrip antenna is 900MHz microstrip antennas, the first via 410, the and of the second via 405
Via 404 is metallization VIA.
It is appreciated that the first antenna paster 306 of the first frequency channel microstrip antenna in the embodiment of the present invention can be other
Dipole form, the second antenna patch 307 of the second frequency channel microstrip antenna can also be other monopolar forms, and the present invention is implemented
Second antenna patch 307 of the frequency channel microstrip antenna of first antenna paster 306 and second of the first frequency channel microstrip antenna in example
Can be shaped form monopolar form or folded dipole form or be other forms dipole form or monopole shape
Formula；The antenna patch 307 of first antenna paster 306 and/or second can also be loop aerial.When first antenna paster 306 and
During the structural change of two antenna patches 307, other corresponding structures change in the lump.
It is emphasized that to be fixed on the first frequency range micro- for a part for the second feeding coaxial lines of the second frequency channel microstrip antenna
In the region of the first earth plate 413 with antenna, and/or, a part for the first feeding coaxial lines of the first frequency channel microstrip antenna is consolidated
Due in the region of the second earth plate 406 of the second frequency channel microstrip antenna.
Below with a specific embodiment, a kind of dual-band microstrip antenna in the embodiment of the present invention is carried out specifically
It is bright, specifically：
Fed in the present embodiment using coaxial line welding manner the most convenient and lower cost, cover 902MHz to realize
Two frequency ranges to 928MHz and 2.4GHz to 2.48GHz, front paster and floor panel structure have certain optimization than conventional aerial.Ginseng
The front and back schematic diagram of microstrip antenna is shown according to Fig. 4.Part in Fig. 4 where folded dipole oscillator arms 409 is
2.4GHz antenna faces, using folded dipole form, including 401 earth plates, pass through the first via 410 and the first earth plate
413 connections；Part in Fig. 4 where the second earth plate 406 is 900M antenna faces.Portion in Fig. 4 where the first earth plate 413
It is divided into the 2.4G antennas back side, by the way that 900M feeding coaxial lines are fixed within the range, reduces 900M antennas to 2.4G antennas
Influence；Part in Fig. 4 where shaped form monopole is the 900MHz antennas back side.
In the present embodiment, zig 115mm, width 10mm, thickness 30mil, 2.4G antenna are folded dipole
Sub- form, the size of the first earth plate electrical feeding connections 401 are 8*3mm, and the size of the first feed strip line 402 is 0.4*2.5mm, first
The size of transformer section 403 is 23*2.2mm, and the overall length of folded dipole oscillator arms 409 is 73mm, passes through coaxial line Type of Welding
Feed, the outer conductor of the first frequency range coaxial line 407 are welded at the first earth plate electrical feeding connections 401, the first frequency range coaxial line
Inner wire 408 is welded at the first feed strip line 402, and the first transformer section 403 is that quarter-wave impedance converts in fact
Now impedance matching of the feed to oscillator.
900M antennas are monopolar form, the size 10*3mm of the second earth plate electrical feeding connections 414, the second feed strip line
415 sizes are 16*1.5mm, and bent monopole 417 overall lengths of son are about 100mm, are equally fed using coaxial line Type of Welding, the
The outer conductor of two frequency range coaxial lines 411 is welded at the second earth plate electrical feeding connections 414, the second frequency range coaxial inner conductor
416 are welded on the second feed strip line 415, and feed line width is different with oscillator ratio line width, and has realized impedance matching.
Because there is a first longer earth plate 413 at the 2.4G antennas back side, 900M feeding coaxial lines are fixed on the 2.4G back sides
In floor area, the performance impact to 2.4G antennas, double-frequency micro-strip antenna scattering parameter (Scattering can be reduced
Parameters, S parameter) test as shown in Figure 5, Figure 6, S11 less than -10dB band a width of 902MHz to 928MHz and
2.23GHz to 2.64GHz；Pattern measurement data as shown in Figure 7, Figure 8,2.4G antenna maximum gain 2.36dB, 900M antennas
Maximum gain 0.4dB, two frequency range horizontal plane circular polarisation are preferable, and horizontal plane 3dB ripples are wider than 60 degree.
It is understood that the first frequency channel microstrip antenna and the second frequency channel microstrip antenna can be conventional 902MHz~
Tri- industrial scientific medical (Industrial of 928MHz, 2.4GHz~2.48GHz and 5.725GHz~5.875GHz
Scientific Medical, ISM) the different frequency range of any two in frequency range, or, can also be other different frequency ranges.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
- A kind of 1. dual-band microstrip antenna, it is characterised in that including：The first frequency channel microstrip antenna and the second frequency channel microstrip antenna of substrate and setting on the substrate；First frequency channel microstrip antenna includes：The first antenna paster of the first area in the face of substrate first is arranged on, if The first earth plate in the first area in the face of substrate second is put, and is grounded with the first antenna paster and described first The first feeding coaxial lines that plate connects respectively；Second frequency channel microstrip antenna includes：The second antenna patch of the second area in the face of substrate second is arranged on, if The second earth plate in the second area in the face of substrate first is put, and is grounded with second antenna patch and described second The second feeding coaxial lines that plate connects respectively；A part for second feeding coaxial lines is fixed in first ground plate area and/or first feed is coaxial A part for line is fixed in second ground plate area, to reduce the second frequency channel microstrip antenna to the first frequency channel microstrip antenna Influence or reduce influence of first frequency channel microstrip antenna to the second frequency channel microstrip antenna；The first antenna paster is the antenna patch of folded dipole form, and second antenna patch is curve monopole shape The antenna patch of formula.
- 2. dual-band microstrip antenna according to claim 1, it is characterised in that the first antenna paster includes：First feed strip line, the first transformer section being connected with the first feed strip line, and become with first impedance Change the folded dipole oscillator arms of section connection.
- 3. dual-band microstrip antenna according to claim 2, it is characterised in that the folded dipole oscillator arms are arranged to Symmetrical folding mode.
- 4. dual-band microstrip antenna according to claim 2, it is characterised in that the end of the folded dipole oscillator arms It is connected by via with first earth plate.
- 5. dual-band microstrip antenna according to claim 2, it is characterised in that first frequency channel microstrip antenna also wraps Include：The first earth plate electrical feeding connections of the first area in the face of substrate first are arranged on, the first earth plate feed connects Socket part is connected by the first via with first earth plate.
- 6. dual-band microstrip antenna according to claim 1, it is characterised in that second antenna patch includes：Second feed strip line, and the shaped form monopole being connected with the second feed strip line.
- 7. dual-band microstrip antenna according to claim 6, it is characterised in that second frequency channel microstrip antenna also wraps Include：The second earth plate electrical feeding connections of the second area in the face of substrate second are arranged on, the second earth plate feed connects Socket part is connected by the second via with second earth plate.
- 8. dual-band microstrip antenna according to any one of claim 1 to 7, it is characterised in thatFirst frequency channel microstrip antenna is 2.4GHz microstrip antennas；Second frequency channel microstrip antenna is 900MHz microstrip antennas.
- 9. dual-band microstrip antenna according to claim 1, it is characterised in thatThe first antenna paster and second antenna patch are the antenna patch of folded dipole form；It is or described First antenna paster and second antenna patch are the antenna patch of curve monopolar form.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068389.8A CN104638367B (en) | 2015-02-09 | 2015-02-09 | dual-band microstrip antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068389.8A CN104638367B (en) | 2015-02-09 | 2015-02-09 | dual-band microstrip antenna |
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| CN104638367A CN104638367A (en) | 2015-05-20 |
| CN104638367B true CN104638367B (en) | 2017-12-29 |
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| CN201510068389.8A Expired - Fee Related CN104638367B (en) | 2015-02-09 | 2015-02-09 | dual-band microstrip antenna |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244613B (en) * | 2015-10-29 | 2018-04-06 | 深圳市大疆创新科技有限公司 | A kind of microstrip antenna |
| CN105896046A (en) * | 2016-04-08 | 2016-08-24 | 南京邮电大学 | Three-polarization slot antenna with dual-frequency gate gap ground metal via hole step impedance |
| CN105896038A (en) * | 2016-04-08 | 2016-08-24 | 东南大学 | Capacity-loaded tri-polarization semi-slot antenna |
| CN105720374A (en) * | 2016-04-08 | 2016-06-29 | 东南大学 | Three-polarized half-slot antenna of grating slit and ground coaxial feeding plated through hole stepped-impedance |
| CN105826669A (en) * | 2016-04-08 | 2016-08-03 | 东南大学 | Triple polarized semislotted antenna with metal through hole step impedance |
| CN107069202B (en) * | 2017-03-30 | 2023-07-21 | 高新兴智联科技股份有限公司 | Near field antenna |
| CN108417978B (en) * | 2018-02-14 | 2023-08-11 | 深圳市道通智能航空技术股份有限公司 | Unmanned aerial vehicle built-in dual-frenquency antenna and unmanned aerial vehicle |
| WO2020019147A1 (en) * | 2018-07-24 | 2020-01-30 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle and antenna thereof |
| CN112310641B (en) * | 2020-09-02 | 2022-03-01 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna module and terminal equipment applying same |
| CN112821048B (en) * | 2021-01-06 | 2024-02-20 | 环鸿电子（昆山）有限公司 | Antenna structure |
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| KR101255220B1 (en) * | 2011-11-17 | 2013-04-23 | 한국해양대학교 산학협력단 | Microstrip antenna for multi band |
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| CN204424449U (en) * | 2015-02-09 | 2015-06-24 | 深圳市大疆创新科技有限公司 | Dual-band microstrip antenna |
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| CN2641843Y (en) * | 2003-09-04 | 2004-09-15 | 上海大学 | Double-frequency coplanar oscillator antenna for vehicle telephone |
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| CN104638367A (en) | 2015-05-20 |
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