CN111653872A - Broadband ultra-wideband antenna - Google Patents
Broadband ultra-wideband antenna Download PDFInfo
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- CN111653872A CN111653872A CN202010451756.3A CN202010451756A CN111653872A CN 111653872 A CN111653872 A CN 111653872A CN 202010451756 A CN202010451756 A CN 202010451756A CN 111653872 A CN111653872 A CN 111653872A
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- antenna
- wideband
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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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- 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
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
Abstract
The invention discloses a broadband ultra-wideband antenna which is high in gain and small in size. The antenna comprises a rectangular dielectric substrate (1), an antenna patch layer (2), a metal grounding plate (3) and a feed port (4); the antenna patch layer (2) comprises one to six radiation patches (211-; the first to six radiation patches (211-216) are uniformly arranged in three rows in the length direction and two rows in the width direction on the upper surface of the rectangular dielectric substrate (1); the adjacent radiation patches in the length direction are connected by an angle feeder line (221-; the middle one (215) of a row of radiating patches (214-216) adjacent to the feed port (4) is connected thereto by a microstrip feed line (24).
Description
Technical Field
The invention belongs to the technical field of ultra-wideband antennas, and particularly relates to a broadband ultra-wideband antenna with high gain and small volume.
Background
The ultra-wideband antenna is a key component of ultra-wideband wireless communication system equipment and is also an indispensable microwave device in the ultra-wideband wireless system. In recent years, with the development of military and civil communication technologies, ultra-wideband antennas are continuously developing toward miniaturization and broadband, and become a hot spot of current research.
The adoption of a multistage stepped structure is a method for more effectively expanding the bandwidth and reducing the size, and is also a method for effectively realizing the ultra-wideband. Because the strong current of the patch is mainly distributed at the edge, the strong current is processed at the edge of the patch, which can cause great influence on the current distribution of the antenna, thereby widening the working bandwidth of the antenna.
However, the research on the existing multi-stage step-type ultra-wideband antenna mainly focuses on the optimization of the impedance bandwidth of the antenna, and the gain of the antenna is generally low. For example, the five-step Antenna designed in the document "V.Prashath K, Tejasri A, Sandeep K, et al.design of UWB Antenna with WLAN & X-Band Notch for Wireless Communication [ J ]. International Journal of Engineering & Technology,2018,7 (2.7)", has a bandwidth in the range of 2.3GHz to 12.8GHz, but a gain of only about 3 dB. For example, the document "Small monomer antenna with Modified Slot Ground Plane for UWB Applications,20th Iranian conference on electric Engineering, (ICEE2012), May 15-17,2012, Tehran, Iran" designs a four-step antenna with a bandwidth range of 2.78GHz-19.38GHz, and the gain in the frequency band does not exceed 3 dB.
Disclosure of Invention
The invention aims to provide a broadband ultra-wideband antenna which is high in gain and small in size.
The technical scheme for realizing the purpose of the invention is as follows:
a broadband ultra-wideband antenna comprises a rectangular dielectric substrate 1, an antenna patch layer 2 attached to the upper surface of the dielectric substrate 1, a metal ground plate 3 attached to the lower surface of the dielectric substrate 1, and a feed port 4 arranged on one long side surface of the dielectric substrate 1.
Preferably, the first and second electrodes are formed of a metal,
the antenna patch layer 2 includes first to sixth radiation patches 211-216, and further includes first to fourth corner feed lines 221-224, first to third microstrip lines 231-233, and a microstrip feed line 24;
the first to sixth radiation patches 211-216 are uniformly arranged in three rows in the length direction and two rows in the width direction on the upper surface of the rectangular dielectric substrate 1; the adjacent radiation patches in the length direction are connected by an angle feeder line 221-;
the middle one 215 of the row of radiating patches 214 and 216 adjacent to the feed port 4 is connected to the feed port 4 by a microstrip feed line 24.
Compared with the prior art, the invention has the following remarkable advantages:
1. compact structure, small: the invention adopts the mode of combining the angle feeder array and the series feeder array, does not need a feeder network, and the angle feeder directly connects the patches, thereby reducing the total size of the antenna and realizing miniaturization.
2. Wide frequency band and high gain: according to the invention, five-stage stepped processing is carried out at the edge of the patch to increase the bandwidth, the ultra-wideband bandwidth range of 10GHz-38GHz is realized by adjusting the step size, the gain reaches 9.55dB at most, and the antenna gain is greatly improved by the six-element radiation patch array compared with that of a single antenna.
The invention is described in further detail below with reference to the figures and the detailed description.
Drawings
Fig. 1 is a schematic structural diagram of a broadband ultra-wideband antenna according to the present invention.
Fig. 2 is a simulation result of return loss of the wideband ultra-wideband antenna according to the embodiment.
Fig. 3 shows the maximum gain of the wideband ultra-wideband antenna of the embodiment at different frequencies within the operating frequency band.
In the figure, a rectangular dielectric substrate 1, an antenna patch layer 2, a metal ground plate 3 and a feed port 4 are arranged; first to sixth radiation patches 211-.
Detailed Description
As shown in fig. 1, the broadband ultra-wideband antenna of the present invention includes a rectangular dielectric substrate 1, an antenna patch layer 2 attached to the upper surface of the dielectric substrate 1, a metal ground plate 3 attached to the lower surface of the dielectric substrate 1, and a feed port 4 disposed on one long side of the dielectric substrate 1.
Preferably, as shown in fig. 1, the antenna patch layer 2 includes first to sixth radiation patches 211-216, and further includes first to fourth corner feed lines 221-224, first to third microstrip lines 231-233, and microstrip feed line 24;
the first to sixth radiation patches 211-216 are uniformly arranged in three rows in the length direction and two rows in the width direction on the upper surface of the rectangular dielectric substrate 1; the adjacent radiation patches in the length direction are connected by an angle feeder line 221-;
the middle one 215 of the row of radiating patches 214 and 216 adjacent to the feed port 4 is connected to the feed port 4 by a microstrip feed line 24.
Preferably, the sixth radiation patch 216 includes five rectangular metal sheets connected in sequence along the wide side, the size of the long side of the five rectangular metal sheets decreases in sequence, and the size of the long side of each rectangular metal sheet is equal to one half of the wavelength of the medium corresponding to the frequency at the resonance point of the antenna.
The first to sixth radiation patches 211-216 are identical in size and shape.
The first to fourth corner feed lines 221-224 are metal microstrip lines with the same size and shape.
The first to third microstrip lines 231 and 233 are metal microstrip lines with the same size and shape.
The metal ground plate 3 is rectangular, one long side is flush with the lower edge of the long side of the dielectric substrate 1 where the feed port 4 is located, two short sides are respectively flush with the lower edges of the two short sides of the dielectric substrate 1 adjacent to the long side, and the projection of the other long side on the upper surface of the dielectric substrate 1 is located between the feed port 4 and a row of radiation patches 214 and 216 adjacent to the feed port 4;
as a modification, the middle of the long side is provided with a groove recessed toward the feed port 4.
Because the radiation patch adopted by the invention is relatively complex, the coupling action of the conventional rectangular grounding plate and the radiation patch can not meet the bandwidth condition. Therefore, the rectangular groove is formed on the basis of the rectangular grounding plate, so that the rectangular grounding plate still has good impedance matching and ultra-wideband bandwidth.
Preferably, the dielectric substrate (1) is made of Rogers5880, the thickness of the dielectric substrate is 0.254mm, and the dielectric constant of the dielectric substrate is 2.2.
This proves the technical effect of the present invention and will be described below with reference to specific examples.
The specific dimensions of each unit in the examples are as follows:
five rectangular metal sheets contained in the five-stage stepped patch 211-216 are sequentially arranged from top to bottom on the long side: 7mm, 6mm, 5mm, 4mm, 3mm, the minor face is in proper order: 7mm, 0.5 mm;
long side of the ground plate 3: 36mm, short side: 4.7mm, rectangular groove long side: 1mm, and the short side is 0.3 mm;
the simulation results are shown in fig. 2 and 3. FIG. 2 is a diagram of a return loss simulation result, and it can be seen from FIG. 2 that the antenna can operate at 10-38GHz and has good impedance matching; fig. 3 shows the antenna gain results at different frequencies, and it can be seen that the antenna has the minimum gain of 4.45dB at 10GHz and the maximum gain of 9.55dB at 24GHz, thereby effectively achieving the improvement of the gain.
In summary, the high-gain small-sized broadband ultra-wideband antenna provided by the invention increases the bandwidth by performing multistage step processing at the edge of the patch, realizes the ultra-wideband design of 10-38GHz, and simultaneously adopts the angular feed array in the transverse direction and serially feeds in the longitudinal direction to directly connect the patches to form an array, thereby reducing the total size of the antenna, realizing the miniaturized design and effectively improving the gain. Finally, the ultra-wideband antenna with high gain, wide frequency band, small volume and compact structure is designed, and has important practical application significance for an ultra-wideband wireless system.
Claims (7)
1. A broadband ultra-wideband antenna is characterized in that:
the antenna patch structure comprises a rectangular dielectric substrate (1), an antenna patch layer (2) attached to the upper surface of the dielectric substrate (1), a metal grounding plate (3) attached to the lower surface of the dielectric substrate (1), and a feed port (4) arranged on one long side face of the dielectric substrate (1).
2. The wideband ultra-wideband antenna of claim 1, wherein:
the antenna patch layer (2) comprises first to sixth radiation patches (211-;
the first to sixth radiation patches (211-216) are uniformly arranged in three rows in the length direction and two rows in the width direction on the upper surface of the rectangular dielectric substrate (1); the adjacent radiation patches in the length direction are connected by an angle feeder line (221-;
the middle one (215) of a row of radiating patches (214-216) adjacent to the feed port (4) is connected to the feed port (4) by a microstrip feed line (24).
3. The wideband ultra-wideband antenna of claim 2, wherein:
the sixth radiation patch (216) comprises five rectangular metal sheets which are sequentially connected along the wide side, the size of the long side of each rectangular metal sheet is sequentially reduced, and the size of the long side of each rectangular metal sheet is equal to one half of the wavelength of a medium corresponding to the frequency at the resonance point of the antenna.
4. The wideband ultra-wideband antenna of claim 3, wherein:
the first to sixth radiation patches (211-216) are identical in size and shape.
5. The wideband ultra-wideband antenna of claim 2, wherein:
the first to fourth corner feed lines (221-224) are metal microstrip lines with the same size and shape.
6. The wideband ultra-wideband antenna of claim 2, wherein:
the first to third microstrip lines (231-.
7. The broadband ultra-wideband antenna of one of claims 1 to 6, wherein:
the metal grounding plate (3) is rectangular, one long side is flush with the lower edge of the long side of the dielectric substrate (1) where the feed port (4) is located, two short sides are respectively flush with the lower edges of the two short sides of the dielectric substrate (1) adjacent to the long side, and the projection of the other long side on the upper surface of the dielectric substrate (1) is positioned between the feed port (4) and a row of radiation patches (214 and 216) adjacent to the feed port (4); the middle part of the long edge is provided with a groove sunken towards the feed port (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451756.3A CN111653872B (en) | 2020-05-26 | 2020-05-26 | Broadband ultra-wideband antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010451756.3A CN111653872B (en) | 2020-05-26 | 2020-05-26 | Broadband ultra-wideband antenna |
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| CN111653872A true CN111653872A (en) | 2020-09-11 |
| CN111653872B CN111653872B (en) | 2022-12-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759342A (en) * | 2022-03-31 | 2022-07-15 | 歌尔智能科技有限公司 | DAB antenna and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001111336A (en) * | 1999-10-08 | 2001-04-20 | Toyota Central Res & Dev Lab Inc | Microstrip array antenna |
| US20050052322A1 (en) * | 2003-07-21 | 2005-03-10 | Jae Yeong Park | Antenna for ultra-wide band communication |
| CN104335421A (en) * | 2012-05-29 | 2015-02-04 | 三星电子株式会社 | Circularly polarized patch antennas, antenna arrays, and devices including such antennas and arrays |
| CN105024145A (en) * | 2015-08-12 | 2015-11-04 | 四川省韬光通信有限公司 | Miniature high-gain microstrip antenna |
| US20190165476A1 (en) * | 2017-11-29 | 2019-05-30 | The Board Of Trustees Of The University Of Alabama | Low-profile multi-band stacked patch antenna |
| CN110098483A (en) * | 2019-04-23 | 2019-08-06 | 南京理工大学 | Minimize omnidirectional's characteristics of conformal microstrip antenna |
| CN110474161A (en) * | 2019-09-29 | 2019-11-19 | 集美大学 | A kind of ultra-wideband antenna of gap loaded microstrip structure |
-
2020
- 2020-05-26 CN CN202010451756.3A patent/CN111653872B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001111336A (en) * | 1999-10-08 | 2001-04-20 | Toyota Central Res & Dev Lab Inc | Microstrip array antenna |
| US20050052322A1 (en) * | 2003-07-21 | 2005-03-10 | Jae Yeong Park | Antenna for ultra-wide band communication |
| CN104335421A (en) * | 2012-05-29 | 2015-02-04 | 三星电子株式会社 | Circularly polarized patch antennas, antenna arrays, and devices including such antennas and arrays |
| CN105024145A (en) * | 2015-08-12 | 2015-11-04 | 四川省韬光通信有限公司 | Miniature high-gain microstrip antenna |
| US20190165476A1 (en) * | 2017-11-29 | 2019-05-30 | The Board Of Trustees Of The University Of Alabama | Low-profile multi-band stacked patch antenna |
| CN110098483A (en) * | 2019-04-23 | 2019-08-06 | 南京理工大学 | Minimize omnidirectional's characteristics of conformal microstrip antenna |
| CN110474161A (en) * | 2019-09-29 | 2019-11-19 | 集美大学 | A kind of ultra-wideband antenna of gap loaded microstrip structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759342A (en) * | 2022-03-31 | 2022-07-15 | 歌尔智能科技有限公司 | DAB antenna and electronic equipment |
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| CN111653872B (en) | 2022-12-13 |
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