CN112490649A - Side-feed narrow ground broadband patch antenna and design method thereof - Google Patents
Side-feed narrow ground broadband patch antenna and design method thereof Download PDFInfo
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- CN112490649A CN112490649A CN202011242362.3A CN202011242362A CN112490649A CN 112490649 A CN112490649 A CN 112490649A CN 202011242362 A CN202011242362 A CN 202011242362A CN 112490649 A CN112490649 A CN 112490649A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention discloses a side-feed type narrow ground broadband patch antenna and a design method thereof, wherein the width of a metal ground is adjusted to adjust the bandwidth of the antenna, the narrower the width of the metal ground is, the wider the bandwidth is, the ultra-wideband characteristic of the antenna can be realized within a certain range of the metal ground, the beam width of an H-plane diagram is fully widened within the bandwidth range, a certain frequency point presents a near-omnidirectional characteristic, and meanwhile, the length of the metal ground and a dielectric layer is adjusted to enable an E-plane diagram to realize multiple beams; in addition, compared with the conventional similar patch antenna, the miniaturization design of the antenna can be realized by reducing the size of the dielectric plate. The invention can be adjusted correspondingly, and solves the technical problem of narrow application field of the patch antenna in the prior art.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a side-feed type narrow-ground broadband patch antenna and a design method thereof.
Background
The conventional microstrip patch antenna is widely applied due to relatively high efficiency and mature analysis method, but the antenna has relatively narrow bandwidth and the miniaturization design is limited by the size of the ground of the antenna; in addition, the conventional patch antenna radiates along the normal direction, and the beam width is narrow, so that the application field of the conventional patch antenna is limited to a certain extent.
Disclosure of Invention
The invention aims to provide a side-feed type narrow ground broadband patch antenna and a design method thereof, and aims to solve the technical problem that the application field of the patch antenna in the prior art is narrow.
In order to achieve the above object, the present invention provides a side-fed narrow ground broadband patch antenna, including a metal radiation patch, a dielectric plate, a metal ground and a coaxial connector portion, wherein the metal radiation patch is fixedly connected to the dielectric plate and attached to an upper surface of the dielectric plate, the metal ground is fixedly connected to the dielectric plate and attached to a lower surface of the dielectric plate, the dielectric plate is located between the metal radiation patch and the metal ground, and the coaxial connector portion is respectively fixedly connected to the metal radiation patch and the metal ground and located at a side of the dielectric plate.
Wherein the dielectric constant of the dielectric plate is 2.2, and the thickness of the dielectric plate is 1.5 mm.
The coaxial connector part uses an SMA connector, the size of a base of the coaxial connector part is 6.5mm, and the inner radius and the outer radius of a corresponding coaxial line are 0.4 mm and 1.9 mm respectively.
And the metal radiation patch is fixedly connected with the coaxial probe.
The metal ground is rectangular and is fixedly connected with the grounding end of the coaxial line.
The invention also provides a design method of the side-fed narrow ground broadband patch antenna, which comprises the following steps:
establishing a side-fed narrow ground broadband patch antenna model;
adjusting the width of the metal ground, wherein the narrower the width of the metal ground is, the wider the width of the metal ground is;
adjusting the lengths of the metal floor and the dielectric layer to enable an E-plane diagram to realize multiple beams;
the size of the dielectric plate is reduced, and the miniaturization of the antenna is realized.
According to the side-feed type narrow-ground broadband patch antenna, the bandwidth of the antenna can be adjusted by adjusting the width of the metal ground, the narrower and wider the metal ground is, the ultra-wideband characteristic of the antenna can be realized within a certain range of the metal ground, the beam width of an H-plane diagram is fully widened within the bandwidth range, a near-omnidirectional characteristic is presented at certain frequency points, and meanwhile, the length of the metal ground and the length of a dielectric layer are adjusted to enable an E-plane diagram to realize multi-beam; in addition, compared with the conventional similar patch antenna, the miniaturization design of the antenna can be realized by reducing the size of the dielectric plate. The invention can be adjusted correspondingly, and solves the technical problem of narrow application field of the patch antenna in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of a 40mm by 40mm patch antenna on a metal ground according to embodiment 1 of the present invention;
fig. 2 is a back view of a 40mm by 40mm patch antenna on a metal ground according to embodiment 1 of the present invention;
fig. 3 shows the reflection coefficient of a 40mm by 40mm patch antenna on a metal ground according to embodiment 1 of the present invention;
fig. 4 is a gain pattern of the E-plane and H-plane of a 40mm x 40mm metal ground patch antenna provided in embodiment 1 of the present invention;
fig. 5 is a front view of a 40mm by 6mm metal ground patch antenna provided in embodiment 2 of the present invention;
fig. 6 is a backside view of a 40mm by 6mm metal ground patch antenna provided in embodiment 2 of the present invention;
fig. 7 shows the reflection coefficient of a 40mm by 6mm patch antenna on a metal ground according to embodiment 2 of the present invention;
fig. 8 shows gain patterns of the E-plane and H-plane of a 40mm x 6mm metal ground patch antenna provided in embodiment 2 of the present invention;
fig. 9 is a front view of a 40mm by 4mm metal ground patch antenna provided in embodiment 3 of the present invention;
fig. 10 is a backside view of a 40mm by 4mm metal ground patch antenna provided in embodiment 3 of the present invention;
fig. 11 shows the reflection coefficient of a 40mm by 4mm patch antenna on a metal ground according to embodiment 3 of the present invention;
fig. 12 is a gain pattern of the E-plane and H-plane of a 40mm x 4mm metal ground patch antenna provided in embodiment 3 of the present invention;
fig. 13 is a front view of a 60mm by 6mm patch antenna on a metal ground according to embodiment 4 of the present invention;
fig. 14 is a back view of a 60mm by 6mm patch antenna on a metal ground according to embodiment 4 of the present invention;
fig. 15 shows the reflection coefficient of a 60mm by 6mm patch antenna on a metal ground according to embodiment 4 of the present invention;
fig. 16 shows the gain patterns of the E-plane and the H-plane of a 60mm x 6mm metal ground patch antenna provided in embodiment 4 of the present invention;
fig. 17 is a front view of a patch antenna with a dielectric plate of 40mm × 21mm and a metal ground of 40mm × 6mm according to embodiment 5 of the present invention;
fig. 18 is a back view of a patch antenna with a dielectric plate of 40mm × 21mm and a metal ground of 40mm × 6mm according to embodiment 5 of the present invention;
fig. 19 shows the reflection coefficients of a dielectric plate 40mm by 21mm and a metal ground 40mm by 6mm patch antenna provided in embodiment 5 of the present invention;
fig. 20 shows the gain patterns of the E-plane and the H-plane of the patch antenna with 40mm × 21mm dielectric plates and 40mm × 6mm metal ground in accordance with embodiment 5 of the present invention;
fig. 21 is a flow chart illustrating steps of a method for designing a patch antenna according to the present invention.
1-metal radiation patch, 2-dielectric plate, 3-metal ground and 4-coaxial connector portion.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 4, the present invention provides an embodiment 1 of a side-feed type narrow ground broadband patch antenna, including a metal radiation patch 1, a dielectric plate 2, a metal ground 3, and a coaxial connector portion 4, where the metal radiation patch 1 is fixedly connected to the dielectric plate 2 and attached to an upper surface of the dielectric plate 2, the metal ground 3 is fixedly connected to the dielectric plate 2 and attached to a lower surface of the dielectric plate 2, the dielectric plate 2 is located between the metal radiation patch 1 and the metal ground 3, and the coaxial connector portion 4 is respectively fixedly connected to the metal radiation patch 1 and the metal ground 3 and located at a side of the dielectric plate 2.
The dielectric constant of the dielectric plate 2 is 2.2, and the thickness of the dielectric plate 2 is 1.5 mm.
The coaxial connector part 4 adopts an SMA connector, the base size of the coaxial connector part 4 is 6.5mm, and the inner radius and the outer radius of a corresponding coaxial line are respectively 0.4 mm and 1.9 mm.
The metal radiation patch 1 is fixedly connected with the coaxial probe.
The metal ground 3 is rectangular, and the metal ground 3 is fixedly connected with the grounding end of the coaxial line.
In the present embodiment, the dielectric plate 2 is made of F4BM material having a dielectric constant of 2.2, the thickness of the dielectric plate 2 is 1.5mm, and the dielectric plate 2 is downsized to achieve a compact design. The metal radiation patch 1 and the metal ground 3 are respectively attached to the upper surface and the lower surface of the dielectric slab 2. And two metal columns at the upper end of the microstrip line are removed when the coaxial connector part 4 is welded.
Referring to fig. 5 to 8, the present invention further provides an embodiment 2 of a side-fed narrow ground broadband patch antenna, in which, compared with the backside of the conventional patch antenna with a metal ground 3 size of 40mm by 40mm provided in embodiment 1 of the present invention, the width of the metal ground 3 is narrowed from 40mm to 6mm, as can be seen from fig. 7, the total bandwidth of the antenna is 3.59GHz, the corresponding two frequency bands are 5.67GHz-7.99GHz and 8.88GHz-10.15GHz, respectively, and the relative bandwidth exceeds 35%, so as to implement the ultra-wideband feature; compared with the embodiment 1, the bandwidth is greatly expanded. After the width of the metal ground 3 is shortened, the wave beam of the patch antenna in the bandwidth of the H-plane image of the middle frequency band is also widened, and the characteristic of approximate omnidirectional radiation is presented.
Referring to fig. 9 to 12, the present invention further provides an embodiment 3 of a side-fed narrow ground broadband patch antenna, in which the ground width is narrowed from 6mm to 4mm compared with the backside of the metal ground 3 patch antenna provided in embodiment 2 of the present invention, where the size of the metal ground 3 is 40mm × 6mm, fig. 11 shows that the antenna bandwidth is 3.86GHz, the corresponding frequency band is 4.58GHz-8.44GHz, the relative bandwidth exceeds 59%, and the bandwidth is further expanded. Within a certain width of the metal floor 3, the narrower the width of the metal floor 3, the wider it is. The beam width of the H-plane image of the middle frequency band in the bandwidth range is fully widened, and near-omnidirectional characteristics are presented at certain frequency points.
Referring to fig. 13 to 16, the present invention further provides an embodiment 4 of a side-fed narrow ground broadband patch antenna, and compared with a backside diagram of a patch antenna with a size of 40mm × 6mm of a metal ground 3 provided in embodiment 2 of the present invention, lengths of a metal ground 3 and a dielectric plate 2 are extended from 40mm to 60mm, as can be seen from fig. 15 and 16, when a width of the metal ground and a size of the metal radiation patch 1 are kept unchanged, lengths of the metal ground and the dielectric plate 2 are extended, so that an E-plane diagram can realize multiple beams, and at the same time, an H-plane gain diagram in a middle frequency band in an ultra-wide band can present an omnidirectional/wide beam.
Referring to fig. 17 to 20, the present invention further provides an embodiment 5 of a side-fed narrow ground broadband patch antenna, where the size of the dielectric plate 2 is 40mm × 21mm, and the size of the metal ground 3 is 40mm × 6mm, as shown in fig. 19 and 20, in this embodiment, not only is the H-plane gain diagram of the middle frequency band in the ultra-wide band shown as omnidirectional/wide beam and the E-plane gain diagram shown as E-plane to achieve multi-beam, but also the overall area of the antenna is reduced by 47.5%.
Referring to fig. 21, the present invention further provides a design method of a side-fed narrow ground broadband patch antenna, including the following steps:
s1: establishing a side-fed narrow ground broadband patch antenna model;
s2: adjusting the width of the metal floor 3, wherein the narrower the width of the metal floor 3 is, the wider the width is;
s3: adjusting the lengths of the metal floor and the dielectric layer to enable an E-plane diagram to realize multiple beams;
s4: the size of the dielectric plate 2 is reduced to realize miniaturization of the antenna.
Firstly, establishing a side-fed narrow ground broadband patch antenna model, adjusting the width of the metal ground 3 according to design requirements to adjust the bandwidth of the antenna, wherein the narrower the width of the metal ground 3 is, the wider the width is, the ultra-wideband characteristic of the antenna can be realized within a certain range of the metal ground 3, the beam width of an H-plane diagram is fully widened within the bandwidth range, the near-omnidirectional characteristic is presented at certain frequency points, and meanwhile, the length of the metal ground 3 and the dielectric layer is adjusted to realize multi-beam of an E-plane diagram.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A side-fed narrow ground broadband patch antenna is characterized in that,
the metal radiation patch is fixedly connected with the medium plate and attached to the upper surface of the medium plate, the metal ground is fixedly connected with the medium plate and attached to the lower surface of the medium plate, the medium plate is located between the metal radiation patch and the metal ground, and the coaxial joint parts are respectively fixedly connected with the metal radiation patch and the metal ground and located on the side of the medium plate.
2. The side-fed narrow terrestrial wideband patch antenna according to claim 1,
the dielectric constant of the dielectric plate is 2.2, and the thickness of the dielectric plate is 1.5 mm.
3. The side-fed narrow terrestrial wideband patch antenna according to claim 2,
the coaxial connector part uses an SMA connector, the size of a base of the coaxial connector part is 6.5mm, and the inner radius and the outer radius of the corresponding coaxial line are 0.4 mm and 1.9 mm respectively.
4. The side-fed narrow terrestrial wideband patch antenna according to claim 3,
and the metal radiation patch is fixedly connected with the coaxial probe.
5. The side-fed narrow terrestrial wideband patch antenna according to claim 4,
the metal ground is rectangular and is fixedly connected with the grounding end of the coaxial line.
6. A design method of the side-fed narrow terrestrial wideband patch antenna according to claim 5, characterized by comprising the steps of:
establishing a side-fed narrow ground broadband patch antenna model;
adjusting the width of the metal ground, wherein the narrower the width of the metal ground is, the wider the width of the metal ground is;
adjusting the lengths of the metal floor and the dielectric layer to enable an E-plane diagram to realize multiple beams;
the size of the dielectric plate is reduced, and the miniaturization of the antenna is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011242362.3A CN112490649A (en) | 2020-11-09 | 2020-11-09 | Side-feed narrow ground broadband patch antenna and design method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011242362.3A CN112490649A (en) | 2020-11-09 | 2020-11-09 | Side-feed narrow ground broadband patch antenna and design method thereof |
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| CN112490649A true CN112490649A (en) | 2021-03-12 |
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| CN202011242362.3A Pending CN112490649A (en) | 2020-11-09 | 2020-11-09 | Side-feed narrow ground broadband patch antenna and design method thereof |
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Citations (7)
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| CN101710649A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Wide wave beam micro-strip antenna unit of strap-shaped floor board and medium coated baffle board |
| CN102280702A (en) * | 2011-05-13 | 2011-12-14 | 上海大学 | Very broadband multiterminal feed printing one pole antenna |
| CN102509868A (en) * | 2011-11-18 | 2012-06-20 | 电子科技大学 | Design method for improved ellipse patch ultra-wideband antenna based on micro strip feed |
| CN103354306A (en) * | 2013-06-18 | 2013-10-16 | 中国航天科工集团第三研究院第八三五七研究所 | Novel S-wave-band high-gain omnidirectional array antenna |
| CN110277637A (en) * | 2019-07-19 | 2019-09-24 | 西南交通大学 | A kind of ultra-wideband monopole paster antenna for Partial Discharge Detection |
| CN111276808A (en) * | 2020-03-12 | 2020-06-12 | 南京理工大学 | Omnidirectional ultra-wideband antenna |
| CN213584169U (en) * | 2020-11-09 | 2021-06-29 | 桂林电子科技大学 | Side-feed narrow ground broadband patch antenna |
-
2020
- 2020-11-09 CN CN202011242362.3A patent/CN112490649A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710649A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Wide wave beam micro-strip antenna unit of strap-shaped floor board and medium coated baffle board |
| CN102280702A (en) * | 2011-05-13 | 2011-12-14 | 上海大学 | Very broadband multiterminal feed printing one pole antenna |
| CN102509868A (en) * | 2011-11-18 | 2012-06-20 | 电子科技大学 | Design method for improved ellipse patch ultra-wideband antenna based on micro strip feed |
| CN103354306A (en) * | 2013-06-18 | 2013-10-16 | 中国航天科工集团第三研究院第八三五七研究所 | Novel S-wave-band high-gain omnidirectional array antenna |
| CN110277637A (en) * | 2019-07-19 | 2019-09-24 | 西南交通大学 | A kind of ultra-wideband monopole paster antenna for Partial Discharge Detection |
| CN111276808A (en) * | 2020-03-12 | 2020-06-12 | 南京理工大学 | Omnidirectional ultra-wideband antenna |
| CN213584169U (en) * | 2020-11-09 | 2021-06-29 | 桂林电子科技大学 | Side-feed narrow ground broadband patch antenna |
Non-Patent Citations (1)
| Title |
|---|
| YIYING WANG 等: "Broadband Patch Antenna with Narrow Width Ground Plane", 《2018 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING》, pages 4 - 5 * |
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