CN103996900B - A kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) - Google Patents
A kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) Download PDFInfo
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- CN103996900B CN103996900B CN201410199684.2A CN201410199684A CN103996900B CN 103996900 B CN103996900 B CN 103996900B CN 201410199684 A CN201410199684 A CN 201410199684A CN 103996900 B CN103996900 B CN 103996900B
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- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
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Abstract
Based on a broadband circle polarized directional array antenna for single slice two-sided printed circuit board (PCB), the nylon column of comprise medium substrate, be positioned at the series feed network in medium substrate front, be positioned at the band groove floor of medium substrate reverse side, be positioned at reflecting plate below medium substrate and connecting media substrate and reflecting plate; Band groove floor is etched with four unit groove antennas, and unit groove antenna is made up of an annular groove and two square grooves of 90 ° of being separated by; Edge with groove floor is also etched with four square grooves, for improving the gain characteristic of array; Series feed network end-point microstrip line strides across two square groove parts of unit groove antenna on band groove floor, thus exciting unit slot antenna; The present invention utilizes the mode of two of ring sift register orthogonal patterns and phase difference 90 ° of feeds to realize unit circular polarization, utilizes series feed real-time performance 2 × 2 aerial array; The present invention can cover wider frequency band, and simultaneously structure is simple, with low cost, can one-shot forming, and process consistency is good.
Description
Technical field
The invention belongs to antenna technical field, particularly a kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB).
Background technology
Circular polarized antenna, because of its special polarization characteristic, makes reception and transmitting antenna have alignment angle flexibly; And along with the fast development of present mobile communication technology, mobile communication system needs to cover wider frequency band to support the multiple communication technology.Therefore more and more extensive to the demand of the circular polarized antenna with wide axial ratio bandwidth.Meanwhile, antenna for base station adopts directional antenna mostly, and therefore the present invention is a broadband circle polarized directional antenna.
Propose much broadband circle polarized element antenna at present, such as, adopt crossed dipoles, co-planar waveguide sipes or stacked structure.When for antenna for base station, need the form adopting array to improve antenna gain, but the feeding network of this kind of antenna is separated with antenna element, and most complex structure, the problem brought assembles complexity often, cost is high.
Summary of the invention
In order to expand the axial ratio bandwidth of circular polarized antenna further, and reduce the structural complexity of Antenna Design, reduction antenna cost of manufacture, the invention provides a kind of four cell array antennas based on single slice two-sided printed circuit board (PCB).It is simple that this antenna has structure, with low cost, product one-shot forming, the features such as process consistency is good, and can cover the bandwidth of about 21%.
To achieve these goals, the technical solution used in the present invention is:
Based on a broadband circle polarized directional array antenna for single slice two-sided printed circuit board (PCB), comprising:
Medium substrate 2;
Be positioned at the series feed network 1 in medium substrate 2 front;
Be positioned at the band groove floor 3 of medium substrate 2 reverse side;
Be positioned at the reflecting plate 5 below medium substrate 2;
The nylon column 4 of connecting media substrate 2 and reflecting plate 5;
Wherein:
Described band groove floor 3 is etched with four unit groove antennas 6, the orthogonal square groove that unit groove antenna 6 is connected to annular groove edge by an annular groove and two is formed; The edge of described band groove floor 3 is also respectively etched with a square groove 7.
Described medium substrate 2 material is FR4, dielectric constant 4.4, and loss tangent value is 0.02, and thickness is 1mm.
Described series feed network 1 distributing point and center of antenna are positioned at the center of medium substrate 2, feeder line forms from distributing point the three sections of loop wires turned clockwise after one section of broken line, the end of these four sections of lines separates one section of line all again, extend to unit groove antenna 6, and be finally divided into the square groove part that two sections of lines stride across unit groove antenna 6.Thus carry out a power division every 90 °, by regulating the live width of every section of loop wire, can realize that power when signal arrives four unit groove antenna places is equal, phase place is 90 ° and goes forward one by one.
Described four unit groove antennas 6 one-tenth two row two column distributions are on band groove floor 3, a square groove on each unit groove antenna 6 is relative with a square groove on adjacent unit groove antenna 6, another square groove on each unit groove antenna 6 is relative with a square groove on another adjacent unit groove antenna 6, is formed relative to the rotational symmetric structure of center of antenna.
The square groove 7 of the edge of described band groove floor 3 is rectangle, and is positioned at the center at edge.
Described each square groove 7 is between the relative square groove of adjacent two unit groove antennas 6.
Described nylon column 4 is positioned on four angles of medium substrate 2, for supporting the medium substrate 2 above described reflecting plate 5.
Described reflecting plate 5 is for generation of orientation direction figure.
Principle of the present invention is: by two orthogonal modess of the mode exciting unit slot antenna of double-fed, and these two orthogonal modes directions of an electric field are vertical, phase difference 90 ° mutually, thus produces circular polarization; For improving antenna gain, form the aerial array of 2 × 2 with four unit groove antennas; Array-fed network adopts series feed form, realizes the directionality of directional diagram with reflecting plate; Square groove has been etched, for improving the gain characteristic of array antenna in floor surrounding.
Compared with prior art, the invention has the beneficial effects as follows: antenna has very wide axial ratio bandwidth.Meanwhile, because antenna structure is simple, only by one piece of circuit board, utilize photoetching process one-shot forming, do not need extra assembling, while guarantee process consistency, also greatly reduce cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the hierarchical diagram of antenna.
Fig. 2 a is the vertical view of antenna, and Fig. 2 b is the end view of antenna.
Fig. 3 is the structure chart of series feed network (structure 1), and has marked size.
Fig. 4 is the structure chart of band trough (structure 3), and has marked size.
Fig. 5 gives antenna measurement gained S parameter.
Fig. 6 gives axial ratio and the gain of antenna.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, Figure 2 shown in a and Fig. 2 b, a kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB), comprises medium substrate 2, is positioned at the series feed network 1 in medium substrate 2 front and is positioned at the band groove floor 3 of medium substrate 2 reverse side.Wherein, medium substrate 2 material is FR4, dielectric constant 4.4, and loss tangent value is 0.02, and thickness of slab is 1 millimeter.
Band groove floor 3 is etched with four unit groove antennas 6, and the orthogonal square groove that each unit groove antenna 6 is connected to annular groove edge by an annular groove and two is formed.Four unit groove antennas 6 are divided into lines equal two row two row of column pitch, a square groove on each unit groove antenna 6 is relative with a square groove on adjacent unit groove antenna 6, another square groove on each unit groove antenna 6 is relative with a square groove on another adjacent unit groove antenna 6, is formed relative to the rotational symmetric structure of center of antenna.The center of the edge with groove floor 3 is respectively etched with a square groove 7, and each square groove 7 is between the relative square groove of adjacent two unit groove antennas 6.
Series feed network 1 distributing point and center of antenna are positioned at the center of medium substrate 2, feeder line forms from distributing point the three sections of loop wires turned clockwise after one section of broken line, often separate a road again through 90 ° and be connected to unit groove antenna 6, each road is finally divided into two-way again, this two paths of signals phase difference 90 °, this two-way microstrip line of end all strides across square groove 7 and carrys out exciting unit slot antenna 6; By regulating the live width of every section of loop wire, realize that power when signal arrives four unit groove antenna 6 places is equal, phase place is 90 ° and goes forward one by one, thus realizes the circular polarization of array.The concrete size in feed networking can be selected as shown in Figure 3, and unit is millimeter.
Concrete size with groove floor 3 can be selected as shown in Figure 4, and unit is millimeter; Wherein, floor size is 162.5 × 162.5mm
2, unit groove antenna 6 is 87.5mm in the distance of level and vertical direction; The ring groove part internal diameter of unit groove antenna 6 is 16mm, and external diameter is 20mm, and namely annular groove width is 4mm; Two square groove size is chosen as long 12mm, wide 8mm; Four edge groove 7 are all positioned at the center of floor edge, and size is chosen as long 20mm, wide 12.5mm.The height of nylon column 4 is 16mm.
Fig. 5 can see, the impedance bandwidth of antenna covers 2.1-2.86GHz; The 3dB axial ratio bandwidth that Fig. 6 shows antenna covers 2.24-2.84GHz, and in axial ratio bandwidth, gain is about 10-14dB.
Claims (5)
1., based on a broadband circle polarized directional array antenna for single slice two-sided printed circuit board (PCB), comprising:
Medium substrate (2);
Be positioned at the series feed network (1) in medium substrate (2) front;
Be positioned at the band groove floor (3) of medium substrate (2) reverse side;
Be positioned at the reflecting plate (5) of medium substrate (2) below;
The nylon column (4) of connecting media substrate (2) and reflecting plate (5);
It is characterized in that,
Described band groove floor (3) is etched with four unit groove antennas (6), the orthogonal square groove that unit groove antenna (6) is connected to annular groove edge by an annular groove and two is formed; The edge of described band groove floor (3) is also respectively etched with a square groove (7), described series feed network (1) distributing point and center of antenna are positioned at the center of medium substrate (2), feeder line forms from distributing point the three sections of loop wires turned clockwise after one section of broken line, the end of these four sections of lines separates one section of line all again, extend to unit groove antenna (6), and be finally divided into the square groove part that two sections of lines stride across unit groove antenna (6).
2. the broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) according to claim 1, it is characterized in that, described medium substrate (2) material is FR4, dielectric constant 4.4, and loss tangent value is 0.02, and thickness is 1mm.
3. the broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) according to claim 1, it is characterized in that, four unit groove antennas (6) become two row two column distributions on band groove floor (3), a square groove on each unit groove antenna (6) is relative with a square groove on adjacent unit groove antenna (6), another square groove on each unit groove antenna (6) is relative with a square groove on another adjacent unit groove antenna (6), is formed relative to the rotational symmetric structure of center of antenna.
4. the broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) according to claim 3, it is characterized in that, the square groove (7) of the edge of band groove floor (3) is rectangle, and is positioned at the center at edge.
5. the broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) according to claim 4, is characterized in that, each square groove (7) is positioned between the relative square groove of two adjacent unit groove antennas (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199684.2A CN103996900B (en) | 2014-05-13 | 2014-05-13 | A kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199684.2A CN103996900B (en) | 2014-05-13 | 2014-05-13 | A kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) |
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| Publication Number | Publication Date |
|---|---|
| CN103996900A CN103996900A (en) | 2014-08-20 |
| CN103996900B true CN103996900B (en) | 2016-04-13 |
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| CN201410199684.2A Expired - Fee Related CN103996900B (en) | 2014-05-13 | 2014-05-13 | A kind of broadband circle polarized directional array antenna based on single slice two-sided printed circuit board (PCB) |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466382B (en) * | 2014-12-31 | 2017-01-25 | 厦门大学 | Stacked microstirp antenna based on nested recursion rotational symmetry CSRR distribution array |
| CN104821432B (en) * | 2015-05-15 | 2017-06-27 | 厦门大学 | Complementary openings ring and ring-like gap solid chamber array regulation and control Big Dipper double-frequency micro-strip antenna |
| CN107331974B (en) * | 2017-06-05 | 2020-05-22 | 西安电子科技大学 | Circular polarized antenna based on ridge gap waveguide |
| CN110350316A (en) * | 2019-07-30 | 2019-10-18 | 南京信息工程大学 | A kind of broadband circle polarized array antenna |
| CN110809199A (en) * | 2019-10-12 | 2020-02-18 | 国网辽宁省电力有限公司盘锦供电公司 | Multi-frequency transmission device for acquisition terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0355898A1 (en) * | 1988-08-03 | 1990-02-28 | Emmanuel Rammos | A planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
| WO2008056502A1 (en) * | 2006-11-10 | 2008-05-15 | Panasonic Corporation | Polarization switching/variable directivity antenna |
| CN101971420A (en) * | 2008-02-04 | 2011-02-09 | 联邦科学和工业研究机构 | Circularly polarised array antenna |
-
2014
- 2014-05-13 CN CN201410199684.2A patent/CN103996900B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0355898A1 (en) * | 1988-08-03 | 1990-02-28 | Emmanuel Rammos | A planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
| WO2008056502A1 (en) * | 2006-11-10 | 2008-05-15 | Panasonic Corporation | Polarization switching/variable directivity antenna |
| CN101971420A (en) * | 2008-02-04 | 2011-02-09 | 联邦科学和工业研究机构 | Circularly polarised array antenna |
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| CN103996900A (en) | 2014-08-20 |
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