CN113745813B - General-purpose integrated antenna - Google Patents
General-purpose integrated antenna Download PDFInfo
- Publication number
- CN113745813B CN113745813B CN202110813629.8A CN202110813629A CN113745813B CN 113745813 B CN113745813 B CN 113745813B CN 202110813629 A CN202110813629 A CN 202110813629A CN 113745813 B CN113745813 B CN 113745813B
- Authority
- CN
- China
- Prior art keywords
- patch
- fan
- shaped
- sector
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H01Q1/36—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
-
- 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
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention discloses a general-purpose induction integrated antenna, and belongs to the technical field of antennas and microwaves. In order to realize the function of the whole induction, the radiating unit of the antenna adopts a circular and fan-shaped patch structure, and meanwhile, a parasitic unit with a fan-shaped structure of branches can be added. When the circular patch structure and the fan-shaped patch structure are adopted, not only can communication and perception be realized, but also the slope of a radiation zero-direction frequency scanning curve is positive. When a parasitic unit with a sector structure with branches is added, zero-point frequency scanning is realized by using a coupling feeding mode, and stable gain is obtained in a specific direction. The invention has the characteristics of small volume, simple structure and the like, and has wide application prospect in various wireless sensing and direction-finding systems of the Internet of things.
Description
Technical Field
The invention relates to a general-purpose induction integrated antenna, and belongs to the field of antennas, microwave technology and internet of things.
Background
In the 1G to 5G era, communication and sensing exist independently, so that the wireless spectrum and hardware resources are wasted due to the separation design, and meanwhile, the problem of high information processing delay caused by the independent functions is also solved. In the 6G era, the communication frequency spectrum takes the way of millimeter waves and terahertz, the frequency spectrum of future communication coincides with the traditional sensing frequency spectrum, and therefore the communication and sensing are required to be fused, and the joint scheduling of resources is realized.
The microstrip patch antenna is the most widely applied antenna in a microwave system, but the common microstrip patch antenna only has a communication function and does not have a sensing function.
Disclosure of Invention
In order to solve the above problems, the present invention provides a sensing integrated antenna, wherein the radiation zero direction of the antenna has a scanning phenomenon in space along with the frequency change, the slope of the radiation zero direction frequency scanning curve is a positive number or a negative number, and the radiation zero direction frequency scanning characteristic is used for realizing a sensing function; meanwhile, the antenna has a relatively stable radiation beam and gain frequency response characteristic in a specific direction, and the stable radiation beam and gain frequency response characteristic is used for realizing a communication function. The antenna actively recognizes and analyzes the characteristics of the channel to sense the physical characteristics of the surrounding environment, has the characteristics of small volume, high gain, simple structure, low profile, low cost and the like, is convenient to manufacture and realize, is favorable for planarization design and miniaturization application, and has wide application prospect in various wireless sensing and various radio frequency identification systems of the Internet of things.
The invention adopts the following technical scheme for solving the technical problems:
a general-purpose antenna comprises a non-closed structure consisting of a circular patch, a first sector patch and a vertical short circuit wall; the circular patch and the first fan-shaped patch are arranged in parallel from top to bottom, and the vertical short-circuit wall is connected with the circular patch and the first fan-shaped patch along the arc direction of the first fan-shaped patch;
the first fan-shaped patch is provided with a first short-circuit nail connected with the circular patch;
two symmetrical arc-shaped grooves are respectively formed inwards on the first fan-shaped patch along two edges;
and the non-closed structure is provided with a feed structure and adopts a coaxial feed mode to feed.
Further, the central angle of the first fan-shaped patch is less than or equal to 60 degrees.
Further, the radius of the circular patch is one fifth to one third of a wavelength larger than the radius of the first sector patch.
Further, the central angle corresponding to the two symmetrical arc-shaped grooves is larger than 15 degrees and smaller than 25 degrees.
Further, the antenna also includes a second sector patch having branches coplanar with the first sector patch; and a second short-circuit nail connected with the circular patch is arranged on the second fan-shaped patch, and the second fan-shaped patch feeds power in a coupling feeding mode.
Furthermore, two symmetrical branches are arranged in the radial direction of the second fan-shaped patch.
Further, the central angle of the second fan-shaped patch is greater than 250 ° and less than 300 °.
Further, the radius of the second sector patch is applied to be one third to one half wavelength smaller than the radius of the first sector patch.
Furthermore, the included angle between the branch knot and the central axis of the second fan-shaped patch is more than 70 degrees and less than 90 degrees.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects: the invention can use the plane structure and simultaneously lead the slope of the radiation zero-direction frequency scanning curve to be positive or negative through the fan-shaped patch plus short-circuit nails, slots or branch knots; meanwhile, the antenna has stable radiation beam and gain frequency response characteristics in a specific direction. The antenna has the advantages of small volume, simple structure, low profile, convenient manufacture and realization, and wide application prospect in various wireless sensing and various radio frequency identification systems of the Internet of things.
Drawings
Fig. 1 is a schematic diagram of a front structure and a reference coordinate of an antenna according to an embodiment of the present invention;
FIG. 2 is a schematic three-dimensional view of an antenna and a reference coordinate diagram according to an embodiment of the present invention;
FIG. 3 is a graph of antenna reflection coefficient characteristics calculated by the HFSS software for an antenna in accordance with one embodiment of the present invention;
FIG. 4 is an illustration of antenna radiation patterns calculated by the HFSS software for the antenna in accordance with an embodiment of the present invention;
FIG. 5 is an angular frequency plot of an antenna radiation null frequency sweep, in accordance with an embodiment of the present invention;
FIG. 6 is a graph of antenna gain calculated by the HFSS software for the antenna in accordance with one embodiment of the present invention;
FIG. 7 is a schematic diagram of the front structure and the reference coordinates of an antenna according to another embodiment of the present invention;
FIG. 8 is a schematic three-dimensional view and a schematic reference coordinate diagram of an antenna according to another embodiment of the present invention;
FIG. 9 is a graph of antenna reflection coefficient characteristics calculated by the HFSS software for an antenna according to another embodiment of the present invention;
FIG. 10 is an illustration of antenna radiation patterns calculated by the HFSS software for an antenna in accordance with another embodiment of the present invention;
FIG. 11 is a graph of antenna gain calculated by the HFSS software for an antenna in accordance with another embodiment of the invention;
wherein, 1' and 1' respectively correspond to a circular patch, a fan-shaped patch with an arc-shaped groove and a fan-shaped patch with branches, 2 and 2' are arc grooves, 3 is a feed structure, 4 and 4' are short-circuit nails, 5 and 5' are branches, and 6 is a central axis of the circular patch.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The technical scheme of the invention is further explained in detail by combining the drawings as follows:
the invention provides a general-purpose induction integrated antenna, which aims to realize general-purpose induction integration function, wherein a radiating unit of the antenna adopts a circular and fan-shaped patch structure, and a parasitic unit with a fan-shaped structure of branches can be added. The antenna can perform radiation zero-direction frequency scanning, has stable radiation wave beam and gain frequency response characteristics in a specific direction, has the characteristics of small volume, high gain, simple structure, low cost and the like, and is favorable for planar design and miniaturization application.
In one embodiment, as shown in fig. 1 and 2, the integrated antenna is formed of a sector patch having two symmetrical arc slots and a circular patch. The fan-shaped patch and the circular patch and the vertical short circuit wall connecting the fan-shaped patch and the circular patch form a non-closed structure, and the fan-shaped patch and the circular patch are connected through a short circuit nail. The antenna can be made on a medium with a dielectric constant of 1-20. By adopting the circular and fan-shaped patch structures, not only can communication and perception be realized, but also the slope of the radiation zero-direction frequency scanning curve is positive.
In the embodiment, an air medium is adopted, the radius of the circular patch is 100mm, and the distance between the fan-shaped patch and the circular patch is 3mm; the radius of the fan-shaped patch is 72.8mm, and the degree of a central angle is 60 degrees; the central angles corresponding to the two arc-shaped grooves on the fan-shaped patch are 23 degrees, and the width is 4mm; the feed point is on the central axis of the fan-shaped patch structure and is 15.8mm away from the circle center; the short-circuit nail is positioned on the central axis of the fan-shaped patch structure and is 28.5mm away from the circle center; and (4) simulating and calculating various characteristics of the antenna by using HFSS software.
Fig. 3 shows the reflection coefficient characteristics of the antenna calculated by the HFSS software, the impedance bandwidth of the antenna covers the frequency band from 3.21 to 4.29GHz, and the center frequency is 3.6GHz, and it can be seen that the antenna has a wider impedance bandwidth.
FIG. 4 is a radiation pattern of the antenna calculated using the HFSS software, with the dashed line representing the pattern at a frequency of 3.27GHz and the null appearing at-75 ° in elevation; the dotted line represents the pattern at a frequency of 3.37GHz, with the null appearing at-30 ° of elevation; the dotted line represents the pattern at 3.37GHz, with the null appearing at-30 ° elevation; the solid line shows the pattern at a frequency of 3.71GHz and the null occurs at an elevation angle of 10 deg.. Therefore, the zero scanning angle range can reach more than 85 degrees within the frequency range of 3.27-3.71 GHz.
Fig. 5 is an angular frequency plot of the antenna radiation null-direction frequency sweep, and it can be seen that the slope of the plot is positive.
Fig. 6 shows the gain characteristic of the antenna in the operating band calculated by the HFSS software, which can reach 7.94dBi in the maximum radiation direction of the antenna resonant frequency.
In another embodiment, as shown in fig. 7 and 8, the integrated antenna is formed of a sector patch with an arc slot, a sector patch with a branch, and a circular patch. The sector patch with the arc-shaped groove and the circular patch and the vertical short circuit wall connecting the sector patch and the circular patch form a non-closed structure. The fan-shaped patch with the branches and the fan-shaped patch with the arc-shaped groove are coplanar, and the fan-shaped patch with the branches and the fan-shaped patch with the arc-shaped groove are respectively provided with a short-circuit nail connected with the circular patch. The antenna can be made on a medium with a dielectric constant of 1-20. The parasitic unit with a sector structure with branches is added, zero-point frequency scanning is realized by using a coupling feed mode, and stable gain is achieved in a specific direction.
In the embodiment, an air medium is adopted, the side length radius of the circular patch is 90mm, and the distances between the fan-shaped patch with the arc-shaped groove, the fan-shaped patch with the branches and the circular patch are all 3mm; the radius of the fan-shaped patch with the arc-shaped groove is 52.5mm, and the degree of the central angle is 90 degrees; the central angles corresponding to the two arc-shaped grooves on the fan-shaped patch with the arc-shaped grooves are 28 degrees, and the width is 2mm; the feed point is 12.5mm away from the center of the circle on the central axis of the fan-shaped patch with the arc-shaped groove; the short circuit nail is arranged on the central axis of the fan-shaped patch with the arc-shaped groove and 21.3mm away from the circle center; the radius of the fan-shaped patch with the branches is 29mm, and the degree of a central angle is 270 degrees; the length of two branches on the fan-shaped patch with the branches is 12.7mm, and the width of the two branches is 7mm; the short circuit nail is arranged on the central axis with the branch knot and is 12mm away from the circle center; and (4) simulating and calculating various characteristics of the antenna by using HFSS software.
Fig. 9 shows the reflection coefficient characteristics of the antenna calculated by the HFSS software, the impedance bandwidth of the antenna covering the 3.26 to 4.15GHz band, and the center frequency of the antenna being 3.6GHz, and it can be seen that the antenna has a wider impedance bandwidth.
Figure 10 is a radiation pattern of the antenna calculated using HFSS software, the dotted line representing the pattern at a frequency of 3.44GHz, the null occurring at an elevation of 45 °; the dotted line represents the pattern at 3.6GHz, with the null appearing at 15 ° elevation; the solid line shows the pattern at a frequency of 3.76GHz and the null occurs at-5 deg. elevation. Therefore, the zero point scanning angle range can reach more than 50 degrees within the frequency range of 3.44-3.76 GHz.
Fig. 11 shows the gain characteristic of the antenna in the operating band calculated by the HFSS software, which can reach 9.24dBi in the maximum radiation direction of the antenna resonant frequency.
In summary, in the design method of the antenna of the present invention, in order to realize the function of the antenna integration, the radiating unit of the antenna adopts the circular and sector patch structures, and meanwhile, the parasitic unit of the sector structure with branches can be added. When the circular patch structure and the fan-shaped patch structure are adopted, not only can communication and perception be realized, but also the slope of a radiation zero-direction frequency scanning curve is positive. When a parasitic unit with a sector structure with branches is added, zero-point frequency scanning is realized by using a coupling feeding mode, and stable gain is obtained in a specific direction. The invention has the characteristics of small volume, simple structure and the like, and has wide application prospect in various wireless sensing and direction-finding systems of the Internet of things.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions should be included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. A general induction integrated antenna is characterized in that the antenna comprises a non-closed structure consisting of a circular patch (1), a first sector patch (1') and a vertical short circuit wall; the circular patch (1) and the first fan-shaped patch (1 ') are placed in parallel one above the other, and the vertical short circuit wall is connected with the circular patch (1) and the first fan-shaped patch (1 ') along the arc direction of the first fan-shaped patch (1 ');
the first fan-shaped patch (1') is provided with a first short-circuit nail (4) connected with the circular patch (1);
two symmetrical arc-shaped grooves (2, 2 ') are respectively formed inwards along two edges on the first fan-shaped patch (1');
a feed structure (3) is arranged on the non-closed structure;
the radius of the circular patch (1) is one fifth to one third of the wavelength larger than the radius of the first sector patch (1').
2. A unified antenna according to claim 1, characterized in that it further comprises a second sectoral patch (1 ") with branches coplanar with the first sectoral patch (1'); the second fan-shaped patch (1 ' ') is provided with a second short-circuit nail (4 ') connected with the circular patch (1) and feeds power by adopting a coupling power feeding mode.
3. A synergetic antenna according to claim 2, characterised in that said second sector patch (1 ") is provided with two symmetrical branches (5, 5') in the radial direction.
4. A synergetics aerial as claimed in claim 1 or 2 wherein the first sector patch (1') has a central angle equal to or less than 60 °.
5. A common-mode integrated antenna according to claim 1 or 2, characterized in that the corresponding central angles of the two symmetrical arc-shaped slots (2, 2') are greater than 15 ° and less than 25 °.
6. A synergetic antenna according to claim 2, characterised in that the central angle of the second sector patch (1 ") is greater than 250 ° and less than 300 °.
7. A unitary, inductive antenna according to claim 2, characterized in that the radius of the second sector patch (1 ') is smaller than the radius of the first sector patch (1') by a factor of three to a factor of two.
8. An integrated antenna according to claim 2, characterized in that the angle between the branch and the central axis of the second patch sector (1 ") is greater than 70 ° and less than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813629.8A CN113745813B (en) | 2021-07-19 | 2021-07-19 | General-purpose integrated antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813629.8A CN113745813B (en) | 2021-07-19 | 2021-07-19 | General-purpose integrated antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113745813A CN113745813A (en) | 2021-12-03 |
| CN113745813B true CN113745813B (en) | 2022-11-18 |
Family
ID=78728789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110813629.8A Active CN113745813B (en) | 2021-07-19 | 2021-07-19 | General-purpose integrated antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113745813B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134180A (en) * | 2018-01-22 | 2018-06-08 | 宁波市乐星感应电器有限公司 | A kind of micro-strip flat plane antenna sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7302278B2 (en) * | 2003-07-03 | 2007-11-27 | Rotani, Inc. | Method and apparatus for high throughput multiple radio sectorized wireless cell |
-
2021
- 2021-07-19 CN CN202110813629.8A patent/CN113745813B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134180A (en) * | 2018-01-22 | 2018-06-08 | 宁波市乐星感应电器有限公司 | A kind of micro-strip flat plane antenna sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113745813A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106129593B (en) | A kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning | |
| JP4390651B2 (en) | Antenna for UWB (Ultra-WideBand) communication | |
| US11228113B2 (en) | Wide-beam planar backfire and bidirectional circularly-polarized antenna | |
| WO2021031669A1 (en) | Three-mode zero-point frequency sweeping antenna | |
| CN103855466A (en) | Three-stopband ultra wideband antenna with narrow notch bandwidth | |
| CN115621723B (en) | Compact ceramic chip antenna array based on ultra wide band three-dimensional direction finding | |
| CN111987464B (en) | Ku/Ka waveband double-frequency cone-beam horn antenna | |
| CN107248613B (en) | High-gain dual-frequency antenna unit | |
| CN108598675B (en) | Wide-beam magnetic dipole antenna | |
| US20200411966A1 (en) | Radiator, antenna and base station | |
| CN103401068B (en) | High-gain wideband stereoscopic slot Yagi antenna | |
| CN220324700U (en) | Antenna unit based on waveguide conversion | |
| CN113745813B (en) | General-purpose integrated antenna | |
| CN110429379B (en) | Gap-coupled short-circuited patch antenna with symmetrical and differential beams | |
| CN111224232B (en) | Dual-band omnidirectional antenna and train | |
| CN112290206A (en) | Silicon-based broadband wide-angle scanning antenna unit | |
| CN107591614B (en) | High-gain omnidirectional array antenna | |
| CN214153217U (en) | Broadband double-dipole microstrip quasi-yagi antenna | |
| CN111600120B (en) | Compact low cross polarization microstrip antenna | |
| CN110444867B (en) | Circularly polarized patch antenna | |
| CN110518344B (en) | Self-balancing wide-bandwidth wave beam magnetic dipole antenna | |
| CN110350318B (en) | Ultra-wideband circularly polarized omnidirectional antenna | |
| CN109830807B (en) | Wide-beam high-gain horn antenna | |
| CN103762419B (en) | A kind of Dual-frequency wide-band antenna for ubiquitous wireless communication node | |
| CN113054418A (en) | Stack type microstrip antenna array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |