CN108649315B - S-band wide-beam antenna - Google Patents

S-band wide-beam antenna Download PDF

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Publication number
CN108649315B
CN108649315B CN201810393701.4A CN201810393701A CN108649315B CN 108649315 B CN108649315 B CN 108649315B CN 201810393701 A CN201810393701 A CN 201810393701A CN 108649315 B CN108649315 B CN 108649315B
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antenna
plate
band
band dipole
bottom plate
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CN108649315A (en
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陈泽宗
王涛
王子寒
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Wuhan University WHU
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Wuhan University WHU
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)

Abstract

The invention relates to an antenna technology, in particular to an S-band wide-beam antenna, which comprises an antenna housing and an antenna, wherein the antenna is arranged in the antenna housing; the antenna comprises an S-band dipole unit whole, an upper plate, a reflection bottom plate, an SMA connector unit, an equiphase cable assembly, a power divider, a mounting plate, a cable, an N-type connector and an antenna base; the S-band dipole unit integrally comprises 3 identical S-band dipole units, and the SMA connector unit comprises 3 identical SMA connectors; the 3 same S-band dipole units are arranged on the axis of the reflecting bottom plate at equal intervals, and one S-band dipole unit in the middle is positioned at the geometric center of the reflecting bottom plate. The coverage frequency of the S-band wide-beam antenna is 2.6-3GHz, and the S-band wide-beam antenna covers the frequency band of a microwave radar. The reflecting plate structure is adopted, the whole structure is compact, and the reliability is high. The method is suitable for the microwave marine remote sensing radar. And the gain is more than 10dB, and the H-plane beam width is more than 150 degrees.

Description

S-band wide-beam antenna
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to an S-band wide-beam antenna.
Background
China has continental coastlines which are longer than 1.8 kilometres, thousands of islands, cluster islands and over 300 kilometres of square ocean territory, and has important historical and practical significance for researching oceans, protecting oceans and developing oceans for future development of China. Waves are the most common phenomenon in the ocean, and the effective observation and research of the waves have important significance for ocean resource development and ocean disaster prevention.
The shore-based microwave radar measures sea wave parameters by utilizing backward Bragg scattering of electromagnetic waves and sea surface capillary waves. The shore-based microwave radar has the advantages of strong anti-interference capability, high time and distance resolution and simple and light system. In a microwave radar, in order to obtain a large sea wave parameter in a sea area, a radar antenna is required to be capable of realizing wide beam coverage. At present, the microwave radar antenna mainly realizes wide beam coverage through a beam scanning or mechanical scanning mode, and the mode has the disadvantages of complex antenna structure and high system cost. And reliability problems also exist due to the presence of electronic or mechanical scanning components.
The wide-beam antenna can be used for obtaining the wave parameters in a large sea area with low cost and high reliability, but the traditional wide-beam antenna has the defects of large voltage standing wave ratio and narrow bandwidth, and the beam width can not meet the requirement of radio ocean remote sensing.
Disclosure of Invention
The invention aims to provide an antenna capable of realizing the beam width of an H plane larger than 150 degrees and the gain larger than 10 dB.
In order to achieve the purpose, the invention adopts the technical scheme that: an S-band wide-beam antenna comprises an antenna housing and an antenna, wherein the antenna is arranged in the antenna housing; the antenna comprises an S-band dipole unit whole, an upper plate, a reflection bottom plate, an SMA connector unit, an equiphase cable assembly, a power divider, a mounting plate, a cable, an N-type connector and an antenna base; the S-band dipole unit integrally comprises 3 identical S-band dipole units, and the SMA connector unit comprises 3 identical SMA connectors; 3 identical S-band dipole units are arranged on the axis of the reflecting bottom plate at equal intervals, and the middle S-band dipole unit is positioned at the geometric center of the reflecting bottom plate; the 3 same S-band dipole units are respectively connected with an output port of the power divider through 3 same SMA connectors through equal-phase cable assemblies, and an input port of the power divider is connected with the N-type connector through a cable; the antenna housing is connected with the antenna base, the upper plate is vertically connected with the reflection bottom plate, the reflection bottom plate is vertically connected with the antenna base, and the power divider is connected with the antenna base through the mounting plate.
In the S-band wide-beam antenna, the S-band dipole unit includes a first radiation plate, a dielectric block, a second radiation plate, a support rod, a nut, a reflective plate, a metal column, a dielectric ring, and a mounting base; a dielectric block is arranged between the first radiating sheet and the second radiating sheet, and the first radiating sheet and the second radiating sheet are symmetrical about an antenna central point O; the reflecting plate is connected with the supporting rod through a nut, and the supporting rod is connected with the mounting seat; four mounting holes are arranged on the diagonal line of the mounting seat; the inner diameter of the medium ring is the same as the diameter of the metal column, the outer diameter of the medium ring is the same as the inner diameter of the supporting rod, and the lower surface of the medium ring is flush with the lower surface of the mounting seat; the metal column and the inner diameter of the support rod form a coaxial feed system.
In the S-band wide-beam antenna, the thicknesses of the first radiation sheet, the second radiation sheet and the reflecting plate are all 2 mm; the dielectric constant of the dielectric block is 3, and the diameter is 16 mm; the outer edge of the first radiation piece and the second radiation piece form an overall dimension of 35mm in width and 40mm in length; the distance between the upper surface of the first radiating plate and the upper surface of the second radiating plate is 6 mm; the width of the reflecting plate is 27mm, and the length of the reflecting plate is 65 mm; the distance between the upper surface of the first radiation sheet and the upper surface of the reflecting plate is 36 mm; the distance between the upper surface of the first radiating sheet and the lower surface of the mounting seat is 68 mm; the mounting seat is 25mm wide and 32mm long, the thickness of the mounting seat is 5mm, the diameters of the mounting holes are 4.1mm, and the four mounting holes form a rectangle of 18mm multiplied by 25 mm; the length of the dielectric ring is 3mm, and the dielectric constant is 3.
In the S-band wide-beam antenna, the distance between adjacent S-band dipole units is 85mm, the length and the width of the reflecting bottom plate are 255mm and 150mm respectively, and the diameter of the upper plate is 160 mm; and the 3S-band dipole units are respectively connected with the reflection bottom plate through mounting seats.
In the above S-band wide-beam antenna, each SMA connector passes through the reflective bottom plate and is connected to a metal post in the S-band dipole unit to form a coaxial feed system.
In the above S-band wide-beam antenna, the radome is made of PVC, the diameter of the radome is 191mm, and the height of the whole antenna is 384 mm.
The invention has the beneficial effects that: the coverage frequency of the S-band wide-beam antenna is 2.6-3GHz, and the frequency band of the microwave radar is covered. The reflecting plate structure is adopted, the whole structure is compact, and the reliability is high. The method is suitable for the microwave marine remote sensing radar. And the gain is more than 10dB, and the H-plane beam width is more than 150 degrees.
Drawings
Fig. 1 is a schematic structural diagram of an S-band broad beam antenna according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an S-band dipole unit according to an embodiment of the present invention;
fig. 3(a) is a right side view of an S-band dipole unit according to an embodiment of the present invention, fig. 3(b) is a front view of an S-band dipole unit according to an embodiment of the present invention, and fig. 3(c) is a left side view of an S-band dipole unit according to an embodiment of the present invention;
fig. 4(a) is a front view of an arrangement of S-band dipole elements according to an embodiment of the present invention, and fig. 4(b) is a side view of an arrangement of S-band dipole elements according to an embodiment of the present invention;
FIG. 5 is a measured VSWR of an antenna according to an embodiment of the present invention;
FIG. 6 is a measured normalized directional pattern of an antenna according to an embodiment of the present invention; fig. 6(a) is an actual measurement normalized E-plane directional diagram of the antenna of the present embodiment, and fig. 6(b) is an actual measurement normalized H-plane directional diagram of the antenna of the present embodiment;
the antenna comprises an antenna housing 1, a dipole unit integer of a 2-S waveband, an upper plate 3, a reflecting bottom plate 4, an SMA connector 5, a cable assembly 6, a power divider 7, an installation plate 8, a cable 9, an N-type connector 10 and an antenna base 11; 12-a first radiation piece, 13-a dielectric block, 14-a second radiation piece, 15-a support rod, 16-a nut, 17-a reflecting plate, 18-a metal column, 19-a dielectric ring and 20-a mounting seat.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The embodiment is realized by the following technical scheme: as shown in fig. 1, the S-band wide-beam antenna includes an antenna housing 1 and an antenna, and the antenna includes an S-band dipole unit whole body 2, an upper plate 3, a reflection bottom plate 4, an SMA connector unit 5, an equal-phase cable assembly 6, a power divider 7, a mounting plate 8, a cable 9, an N-type connector 10 and an antenna base 11.
The S-band dipole unit 2 includes 3 identical S-band dipole units, and the SMA connector unit 5 includes 3 identical SMA connectors. The 3S-band dipole units are equally spaced on the axis of the reflective backplane 4, and the second S-band dipole unit is located at the geometric center of the reflective backplane 2. The 3S-band dipole units are respectively output through 3 SMA connectors, and the SMA connectors are connected with 3 output ports of the power divider 7 through the equal-phase cable assembly 6. The input port of the power divider 7 is connected with an N-type connector 10 through a cable 9. The power divider 7 is connected to the antenna base 11 through the mounting plate 8. The 3S-band dipole units are respectively connected with the reflection base plate 4 through the mounting base 20. The SMA connector penetrates through the reflecting bottom plate 4 to be connected with the metal posts 18 in the S-band dipole unit and form a coaxial feed system.
And, the upper plate 3 is connected with the reflection bottom plate 4, and the included angle between the two is 90 °, and the reflection bottom plate 4 is connected with the antenna base 11, and the included angle between the two is 90 °. The radome 1 is connected to an antenna base 11.
The S-band dipole unit is shown in fig. 2, and includes a first radiation piece 12, a dielectric block 13, a second radiation piece 14, a support rod 15, a nut 16, a reflection plate 17, a metal column 18, a dielectric ring 19, and a mounting base 20.
As shown in fig. 3(a), 3(b), and 3(c), which are respectively a right view, a front view, and a left view of the S-band dipole unit, the thicknesses of the first radiation sheet 12, the second radiation sheet 14, and the reflection plate 17 are all l12mm, a dielectric block 13 is arranged between the first radiation piece 12 and the second radiation piece 14, the dielectric constant of the dielectric block 13 is 3, and the diameter R of the dielectric block is1The first radiation piece 12 and the second radiation piece 14 are symmetrical along the center point O, and satisfy a1＝35mm，b 140 mm; the distance l between the upper surface of the first radiation piece 12 and the upper surface of the second radiation piece 1426 mm; the reflecting plate 17 is connected with the supporting rod 15 through a nut 16, and the shape of the reflecting plate 17 satisfies a2＝27mm，b265mm, the distance l between the upper surface of the first radiation piece 12 and the upper surface of the reflection plate 17336 mm; the supporting frame 15 is connected with the reflecting plate bottom plate 4 through the mounting seat 20, and the distance l between the upper surface of the first radiation piece 12 and the lower surface of the mounting seat 204The shape of the mounting seat 20 is equal to l 68mm5＝25mm，l832mm, mount pad 20 is 5mm thick, has four mounting holes on the mount pad 20, and the mounting hole diameter is 4.1mm, and four mounting holes are located respectively wide for l618mm long by l7At the four corners of the 25mm rectangle. And a dielectric ring 19 is further arranged in the S-band dipole unit, the inner diameter of the dielectric ring 19 is the same as the diameter of the metal column 18, the outer diameter of the dielectric ring 19 is the same as the inner diameter of the supporting rod 15, the lower surface of the dielectric ring 19 is flush with the lower surface of the mounting seat 20, the length of the dielectric ring 19 is 3mm, and the dielectric constant is 3.
The front view of the arrangement of the S-band dipole units is shown in fig. 4(a), 3S-band dipole units are arranged at equal intervals along the axis of the reflective bottom plate 4, and the second S-band dipole unit is located at the geometric center of the reflective bottom plate 4.
Fig. 4(b) shows a front view of arrangement of S-band dipole units, where 3S-band dipole units are connected to an output port of the power divider 7 through the equal-phase cable assembly 6, an input port of the power divider 7 is connected to the N-type connector 10 through the cable 9, the power divider 7 is connected to the antenna base 11 through the mounting plate 8, and the radome 1 is connected to the antenna base 11.
In the embodiment, the wide beam of the H surface can be realized by utilizing the radiation characteristic of the dipole and the reflection action of the double-layer reflecting plate, and the gain of the antenna can be increased by forming the array on the premise of not changing the width of the beam of the H surface of the antenna. Wherein 3S wave band dipole units are arranged at equal intervals along the axis of the reflection bottom plate 4, and the second dipole unit is located at the geometric center of the reflection bottom plate 4, and the distance d between adjacent S wave band dipole units is 85mm, as shown in fig. 4 (a). The size of the whole reflecting bottom plate 4 meets the following requirements: a is 255mm, b is 150 mm; as shown in fig. 4(b), in order to reduce the backscattering of the antenna, an upper plate 3 is introduced, and the size of the upper plate 3 satisfies: r4 ═ 160 mm; whole antenna installation is in the antenna house 1 of PVC preparation, and 1 diameter of antenna house satisfies: r5 is 191 mm. The overall antenna height h is 384 mm.
Fig. 5 shows the measured vswr of the antenna of this embodiment.
Fig. 6(a) shows the actual measurement normalized E-plane pattern of the antenna of this embodiment, and fig. 6(b) shows the actual measurement normalized H-plane pattern of the antenna of this embodiment.
In summary, the S-band wide-beam antenna of this embodiment can achieve an H-plane pattern larger than 150 ° and a gain larger than 10dB in an operating frequency band of 2.6-3 GHz. The whole antenna has compact structure and high reliability, and is suitable for the microwave ocean remote sensing radar.
It should be understood that parts of the specification not set forth in detail are well within the prior art.
Although specific embodiments of the present invention have been described above with reference to the accompanying drawings, it will be appreciated by those skilled in the art that these are merely illustrative and that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is only limited by the appended claims.

Claims (5)

1. An S-band wide-beam antenna is characterized by comprising an antenna housing and an antenna, wherein the antenna is arranged in the antenna housing; the antenna comprises an S-band dipole unit whole, an upper plate, a reflection bottom plate, an SMA connector unit, an equiphase cable assembly, a power divider, a mounting plate, a cable, an N-type connector and an antenna base; the S-band dipole unit integrally comprises 3 identical S-band dipole units, and the SMA connector unit comprises 3 identical SMA connectors; 3 identical S-band dipole units are arranged on the axis of the reflecting bottom plate at equal intervals, and the middle S-band dipole unit is positioned at the geometric center of the reflecting bottom plate; the 3 same S-band dipole units are respectively connected with an output port of the power divider through 3 same SMA connectors through equal-phase cable assemblies, and an input port of the power divider is connected with the N-type connector through a cable; the antenna housing is connected with the antenna base, the upper plate is vertically connected with the reflection bottom plate, the reflection bottom plate is vertically connected with the antenna base, and the power divider is connected with the antenna base through the mounting plate;
the S-band dipole unit comprises a first radiation piece, a dielectric block, a second radiation piece, a support rod, a nut, a reflection plate, a metal column, a dielectric ring and a mounting seat; a dielectric block is arranged between the first radiating sheet and the second radiating sheet, and the first radiating sheet and the second radiating sheet are symmetrical about an antenna central point O; the reflecting plate is connected with the supporting rod through a nut, and the supporting rod is connected with the mounting seat; four mounting holes are arranged on the diagonal line of the mounting seat; the inner diameter of the medium ring is the same as the diameter of the metal column, the outer diameter of the medium ring is the same as the inner diameter of the supporting rod, and the lower surface of the medium ring is flush with the lower surface of the mounting seat; the metal column and the inner diameter of the support rod form a coaxial feed system.
2. The S-band wide beam antenna of claim 1, wherein the first radiation plate, the second radiation plate and the reflector plate are all 2mm thick; the dielectric constant of the dielectric block is 3, and the diameter is 16 mm; the outer edge of the first radiation piece and the second radiation piece form an overall dimension of 35mm in width and 40mm in length; the distance between the upper surface of the first radiating plate and the upper surface of the second radiating plate is 6 mm; the width of the reflecting plate is 27mm, and the length of the reflecting plate is 65 mm; the distance between the upper surface of the first radiation sheet and the upper surface of the reflecting plate is 36 mm; the distance between the upper surface of the first radiating sheet and the lower surface of the mounting seat is 68 mm; the mounting seat is 25mm wide and 32mm long, the thickness of the mounting seat is 5mm, the diameters of the mounting holes are 4.1mm, and the four mounting holes form a rectangle of 18mm multiplied by 25 mm; the length of the dielectric ring is 3mm, and the dielectric constant is 3.
3. The S-band wide beam antenna according to claim 1, wherein the distance between adjacent S-band dipole units is 85mm, the length and width of the reflective bottom plate are 255mm and 150mm, respectively, and the diameter of the upper plate is 160 mm; and the 3S-band dipole units are respectively connected with the reflection bottom plate through mounting seats.
4. The S-band wide beam antenna of claim 1, wherein each SMA connector is connected to a metal post in an S-band dipole unit through a reflective substrate and forms a coaxial feed system.
5. The S-band wide beam antenna according to claim 1, wherein the radome is made of PVC, the diameter of the radome is 191mm, and the height of the entire antenna is 384 mm.
CN201810393701.4A 2018-04-27 2018-04-27 S-band wide-beam antenna Active CN108649315B (en)

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CN108649315B true CN108649315B (en) 2020-01-07

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2316859C1 (en) * 2006-07-18 2008-02-10 Федеральное государственное унитарное предприятие "Государственный московский завод "Салют" Antenna
CN201435452Y (en) * 2009-06-30 2010-03-31 北京中天鸿大科技有限公司 Broadband vertical polarization UHF integral antenna
CN204538253U (en) * 2014-12-31 2015-08-05 深圳市大富科技股份有限公司 Dual-band antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2316859C1 (en) * 2006-07-18 2008-02-10 Федеральное государственное унитарное предприятие "Государственный московский завод "Салют" Antenna
CN201435452Y (en) * 2009-06-30 2010-03-31 北京中天鸿大科技有限公司 Broadband vertical polarization UHF integral antenna
CN204538253U (en) * 2014-12-31 2015-08-05 深圳市大富科技股份有限公司 Dual-band antenna

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