CN112259960B - Substrate integrated high-isolation dielectric antenna - Google Patents
Substrate integrated high-isolation dielectric antenna Download PDFInfo
- Publication number
- CN112259960B CN112259960B CN202011164157.XA CN202011164157A CN112259960B CN 112259960 B CN112259960 B CN 112259960B CN 202011164157 A CN202011164157 A CN 202011164157A CN 112259960 B CN112259960 B CN 112259960B
- Authority
- CN
- China
- Prior art keywords
- metal
- dielectric
- axis
- dielectric substrate
- parallel
- 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
- 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
-
- 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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/04—Multimode antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0485—Dielectric resonator antennas
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention discloses a substrate integrated high-isolation dielectric antenna, wherein a top layer metal structure is positioned on the upper surface of a first dielectric substrate, and the top layer metal structure forms an I-shaped plane decoupling structure by two metal strips parallel to an x axis and a metal strip parallel to a y axis. The side metal structure is formed by four metal strips parallel to the x axis and two metal strips parallel to the y axis to form a side decoupling structure, the four metal strips parallel to the x axis are positioned on two opposite inner side surfaces of the two rectangular dielectric sheets, and the two metal strips parallel to the y axis are positioned on two opposite side surfaces of the dielectric strips. The plane decoupling structure is connected and conducted with the side decoupling structure to form a decoupling structure of the antenna, and partial coupling paths between the two dielectric antenna units are changed to form a decoupling effect with high broadband isolation.
Description
Technical Field
The invention relates to the field of microwave communication, in particular to a substrate integrated high-isolation dielectric antenna.
Background
The dielectric antenna has the advantages of high radiation efficiency, low loss, high design freedom and the like, and is widely applied to a microwave frequency band. The dielectric radiator and the feed circuit of the substrate integrated dielectric antenna are realized through the PCB substrate, so that the integration level is higher, and the traditional dielectric antenna cannot be integrated with the substrate due to the reasons of material, height, mode and the like, so that the traditional dielectric antenna is not beneficial to installation, saves cost and has low precision. On the other hand, the isolation between the antenna units influences the matching, directional diagram, efficiency, scanning angle and the like of an antenna array, a phased array, an MIMO antenna and the like, so that the substrate-integrated high-isolation dielectric antenna can improve the integration and obtain good antenna performance. In the existing dielectric antenna, a dielectric resonator or a decoupling structure cannot be integrated on a substrate, and the decoupling structure has the problems of complex structure, large size, poor decoupling effect and the like. Therefore, the design of the dielectric antenna capable of being integrated on the substrate and the decoupling structure thereof has important significance in achieving the effect of high isolation.
Disclosure of Invention
The invention aims to: in view of the above prior art, a substrate-integrated high-isolation dielectric antenna is proposed, in which a dielectric antenna and a decoupling structure are integrated on a substrate, and isolation bandwidth are improved in performance.
The technical scheme is as follows: a substrate integrated high-isolation dielectric antenna is characterized by comprising a top metal structure, a first dielectric substrate, a side metal structure, a second dielectric substrate, a metal ground, a third dielectric substrate and a metal strip line;
the first dielectric substrate comprises two rectangular dielectric sheets and a dielectric strip, wherein the dielectric strip is positioned in the middle and connects the two rectangular dielectric sheets; the top layer metal structure is positioned on the upper surface of the first dielectric substrate, a second dielectric substrate, a metal ground and a third dielectric substrate are sequentially arranged below the first dielectric substrate, and the metal strip line is positioned on the lower surface of the third dielectric substrate; the metal ground is provided with a pair of grooves; the first dielectric substrate, the second dielectric substrate and the metal ground form a dielectric antenna unit integrated by two substrates; the metal strip line, the third dielectric substrate, the metal earth and the pair of grooves on the metal earth form a pair of microstrip coupling feed structures;
in a space Cartesian rectangular coordinate system, the top-layer metal structure is an I-shaped plane decoupling structure formed by two metal strips parallel to an x axis and a metal strip parallel to a y axis; the metal strips in the top layer metal structure, which are parallel to the y axis, are positioned on the upper surface of the medium strip;
the side metal structure is formed by four metal strips parallel to an x axis and two metal strips parallel to a y axis to form a side decoupling structure; four metal strips parallel to the x axis in the side metal structure are positioned on two opposite inner side faces of the two rectangular medium sheets, and two metal strips parallel to the y axis are positioned on two opposite side faces of the medium strips.
Has the advantages that: 1. the planar metal decoupling structure, the side metal decoupling structure and the coupling feed dielectric antenna are combined, and the substrate integrated high-isolation dielectric antenna is formed by integrating the dielectric strips, so that the complexity of the decoupling structure is reduced, the size is reduced, and the mounting is convenient.
2. The plane decoupling structure is connected and conducted with the side decoupling structure to form the decoupling structure of the antenna, and partial coupling paths between the two dielectric antenna units are changed to form a decoupling effect with high broadband isolation.
Drawings
FIG. 1 is a cross-sectional view of a substrate-integrated high isolation dielectric antenna of the present invention;
FIG. 2 is an exploded view of a substrate integrated high isolation dielectric antenna of the present invention;
FIG. 3 is a top metal structure and a side metal structure of the substrate integrated high isolation dielectric antenna of the present invention;
FIG. 4 is a top view of a substrate integrated high isolation dielectric antenna of the present invention;
FIG. 5 is a graph of the simulated matching response and radiation response of the example;
FIG. 6 is a simulation directional diagram of single-port excitation of a dielectric antenna in an embodiment; wherein (a) is a simulated directional diagram at 11.0GHz, (b) is a simulated directional diagram at 11.8GHz, and (c) is a simulated directional diagram at 12.6 GHz.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1 and fig. 2, a substrate-integrated high-isolation dielectric antenna includes a top metal structure 1, a first dielectric substrate 2, a lateral metal structure 3, a second dielectric substrate 4, a metal ground 5, a third dielectric substrate 7, and a metal strip line 8.
The first medium substrate 2 comprises two rectangular medium sheets 21 and a first medium strip 22, the medium strip 22 is positioned in the middle and connected with the two rectangular medium sheets 21, and the other sides of the two rectangular medium sheets 21 are respectively connected with a rectangular medium positioning sheet 23 through a second medium strip 24; the second dielectric strip 24 and the rectangular dielectric positioning sheet 23 are arranged to enable the length of the first dielectric substrate 2 along the y-axis to be consistent with the size of the rest of the layer structure, and therefore antenna assembly is facilitated. The top layer metal structure 1 is located on the upper surface of the first dielectric substrate 2, the second dielectric substrate 4, the metal ground 5 and the third dielectric substrate 7 are sequentially arranged below the first dielectric substrate 2, and the metal strip line 8 is located on the lower surface of the third dielectric substrate 7. The metal ground 5 is provided with a pair of grooves 6. The first dielectric substrate 2, the second dielectric substrate 4 and the metal ground 5 form two substrate integrated dielectric antenna units to form a 1 × 2 dielectric antenna array. The metal strip line 8, the third dielectric substrate 7, the metal earth 5 and the pair of slots 6 on the metal earth 5 form a pair of microstrip coupling feed structures.
As shown in fig. 3 and 4, in a spatial cartesian rectangular coordinate system, the top metal structure 1 is formed into an i-shaped planar decoupling structure by two metal strips 11 parallel to the x-axis and a metal strip 12 parallel to the y-axis; the metal strips 12 in the top metal structure 1 parallel to the y-axis are located on the upper surface of the media strip 22.
The lateral metal structure 3 is formed by four metal strips 32 parallel to the x-axis and two metal strips 31 parallel to the y-axis to form a lateral decoupling structure; the four metal strips 32 parallel to the x-axis in the side metal structure 3 are located on two opposite inner sides of the two rectangular dielectric sheets 21, and the two metal strips 31 parallel to the y-axis are located on two opposite sides of the dielectric strip 22, i.e. the side decoupling structure is arranged perpendicular to the layers of the antenna. The planar decoupling structure and the lateral decoupling structure are combined into an integral metal decoupling structure.
The invention discloses a substrate integrated high-isolation dielectric antenna and an antenna sheetHas two operating modes including TE1 x 11Mode and slot modes. The metal decoupling structure changes partial coupling paths between the two dielectric antenna units in the whole frequency band, so that signals of different coupling paths are finally mutually cancelled when being superposed, and a decoupling effect of high isolation of a broadband is formed.
The center frequency of the invention is mainly adjusted by the rectangular dielectric sheet 21 and the top metal structure 1, and proper correction is made in consideration of the influence of the dielectric strip 22 and the decoupling structure. The microstrip coupling feed structure and the slot line length can properly adjust the bandwidth of the antenna. The height and length of the side metal structures 3 and the length and width of the top metal structure 1 in the decoupling structure can adjust the isolation performance.
In this embodiment, the first dielectric substrate 2 is an RO6010 substrate, the second dielectric substrate 4 and the third dielectric substrate 7 are RO4003C substrates, and the cross section of the dielectric antenna is 4.242mm, that is, the cross section height at the center frequency of 11.8GHz is 0.167 λ0. The simulated matching response and radiation response are shown in fig. 5, and it can be seen that this case operates at 11.80 GHz, the maximum gain in the band is 7.16dBi, and the 10dB matching bandwidth is 25.2%. FIG. 6 is a simulated pattern for single port excitation of the dielectric antenna at 11.0GHz, 11.8GHz, 12.6GHz with 3-dB beamwidths for the E-plane and H-plane within the entire matching band in the range of 72.5-86.8 and 73.2-99.4, respectively, and maximum cross-polarization levels of-18.59 dB and-32.45 dB, respectively.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A substrate integrated high-isolation dielectric antenna is characterized by comprising a top layer metal structure (1), a first dielectric substrate (2), a side surface metal structure (3), a second dielectric substrate (4), a metal ground (5), a third dielectric substrate (7) and a metal strip line (8);
the first dielectric substrate (2) comprises two rectangular dielectric sheets (21) and a dielectric strip (22), wherein the dielectric strip (22) is located in the middle and connects the two rectangular dielectric sheets (21); the top-layer metal structure (1) is positioned on the upper surface of a first dielectric substrate (2), a second dielectric substrate (4), a metal ground (5) and a third dielectric substrate (7) are sequentially arranged below the first dielectric substrate (2), and the metal strip line (8) is positioned on the lower surface of the third dielectric substrate (7); the metal ground (5) is provided with a pair of grooves (6); the first dielectric substrate (2), the second dielectric substrate (4) and the metal ground (5) form a dielectric antenna unit integrated by two substrates; the metal strip line (8), the third dielectric substrate (7), the metal ground (5) and the pair of slots (6) on the metal ground (5) form a pair of microstrip coupling feed structures;
in a space Cartesian rectangular coordinate system, the top-layer metal structure (1) is an I-shaped plane decoupling structure formed by two metal strips (11) parallel to an x axis and metal strips (12) parallel to a y axis; the metal strips (12) parallel to the y axis in the top layer metal structure (1) are positioned on the upper surface of the dielectric strip (22);
the side metal structure (3) is formed by four metal strips (32) parallel to an x axis and two metal strips (31) parallel to a y axis to form a side decoupling structure; four metal strips (32) parallel to the x axis in the side metal structure (3) are positioned on two opposite inner side faces of the two rectangular medium sheets (21), and two metal strips (31) parallel to the y axis are positioned on two opposite side faces of the medium strips (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011164157.XA CN112259960B (en) | 2020-10-27 | 2020-10-27 | Substrate integrated high-isolation dielectric antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011164157.XA CN112259960B (en) | 2020-10-27 | 2020-10-27 | Substrate integrated high-isolation dielectric antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112259960A CN112259960A (en) | 2021-01-22 |
| CN112259960B true CN112259960B (en) | 2022-05-20 |
Family
ID=74262126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011164157.XA Active CN112259960B (en) | 2020-10-27 | 2020-10-27 | Substrate integrated high-isolation dielectric antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112259960B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301473A (en) * | 2018-10-31 | 2019-02-01 | 南通至晟微电子技术有限公司 | 5G millimeter wave broadband differential antennae |
| CN109616751A (en) * | 2019-01-14 | 2019-04-12 | 南通至晟微电子技术有限公司 | A kind of low section broadband medium resonant aerial |
| CN111786095A (en) * | 2020-08-10 | 2020-10-16 | 南通大学 | Broadband inclined beam medium patch antenna |
-
2020
- 2020-10-27 CN CN202011164157.XA patent/CN112259960B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301473A (en) * | 2018-10-31 | 2019-02-01 | 南通至晟微电子技术有限公司 | 5G millimeter wave broadband differential antennae |
| CN109616751A (en) * | 2019-01-14 | 2019-04-12 | 南通至晟微电子技术有限公司 | A kind of low section broadband medium resonant aerial |
| CN111786095A (en) * | 2020-08-10 | 2020-10-16 | 南通大学 | Broadband inclined beam medium patch antenna |
Non-Patent Citations (1)
| Title |
|---|
| The Methods for Generating Radiation Null in Filtering Antennas;Lei Wang等;《2019 PhotonIcs & Electromagnetics Research Symposium》;20191220;第1531-1536页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112259960A (en) | 2021-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112332079B (en) | Double-linear polarization double-beam base station antenna based on super surface | |
| CN1823446B (en) | Wideband phased array radiator | |
| CN107230840B (en) | High gain broadband microstrip patch antenna | |
| CN111682309B (en) | Single-layer single-feed back cavity circularly polarized filter antenna | |
| CN111969313B (en) | High-gain differential dual-polarized antenna based on hollow dielectric patch resonator | |
| CN112382854B (en) | 5G base station full-duplex ultra-high-isolation dual-polarized MIMO antenna array | |
| CN113193371B (en) | Miniaturized high-isolation circularly polarized diversity antenna based on dual-mode resonance | |
| CN113097718B (en) | Dual-frequency dual-circular-polarization common-caliber antenna for satellite communication | |
| CN112701462B (en) | SIW (substrate integrated waveguide) circularly polarized low-profile magnetoelectric dipole antenna | |
| CN112510340A (en) | Dual-polarized filtering patch antenna with high selective radiation efficiency | |
| CN111262022A (en) | Circularly polarized antenna | |
| CN114374085A (en) | Dual-polarization hybrid antenna for 5G millimeter wave dual-band application | |
| CN112117535A (en) | 5G millimeter wave electromagnetic hybrid dual-polarization MIMO antenna array | |
| CN113506976B (en) | High-gain circularly polarized antenna and wireless communication device | |
| CN112886234B (en) | Microwave millimeter wave coplanar common-caliber antenna based on embedded structure | |
| CN111463562B (en) | Ultra-wideband differential feed PIFA antenna with filtering effect | |
| CN112259960B (en) | Substrate integrated high-isolation dielectric antenna | |
| CN209822857U (en) | Novel tightly-fed broadband dual-polarization butterfly-shaped oscillator | |
| CN110911828A (en) | Broadband differential feed dual-polarized antenna adopting integrated six-port power divider | |
| CN108808233B (en) | High-gain broadband dual-polarized patch antenna | |
| CN112909515B (en) | Four-mode four-port cylindrical dielectric resonator diversity antenna | |
| CN114843772A (en) | Dual-frequency dual-circular-polarization high-isolation Fabry-Perot cavity MIMO antenna and processing method thereof | |
| CN114824774A (en) | Broadband high-isolation dual-polarization super-surface antenna | |
| CN114122713A (en) | SIW differential feed circularly polarized antenna array | |
| CN115863979B (en) | Metal broadband circularly polarized patch antenna and communication equipment |
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 |