CN113612026B - Wide-angle high-scanning-rate millimeter wave leaky-wave antenna - Google Patents
Wide-angle high-scanning-rate millimeter wave leaky-wave antenna Download PDFInfo
- Publication number
- CN113612026B CN113612026B CN202110896667.4A CN202110896667A CN113612026B CN 113612026 B CN113612026 B CN 113612026B CN 202110896667 A CN202110896667 A CN 202110896667A CN 113612026 B CN113612026 B CN 113612026B
- Authority
- CN
- China
- Prior art keywords
- leaky
- wave
- gap
- wave antenna
- wide
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
- H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention belongs to the technical field of wireless communication, and discloses a wide-angle high-scanning-rate millimeter wave leaky-wave antenna which comprises an integrated substrate waveguide, wherein the integrated substrate waveguide comprises an upper metal layer, a plurality of gap modulation units are arranged on the upper metal layer, each gap modulation unit comprises a rectangular gap, the rectangular gap is positioned in the middle of each gap modulation unit, each gap modulation unit further comprises two open resonant rings, openings of the two open resonant rings face the rectangular gap and are symmetrically arranged on two sides of the rectangular gap, and the working frequency range of the antenna can be controlled by controlling the opening width gap of each open resonant ring. The leaky-wave antenna of the invention is composed of 15 units. Two ends of the antenna are provided with a section of trapezoidal microstrip transition line so as to realize impedance matching between the microstrip line and the SIW. The leaky-wave antenna has the advantages of high scanning speed and wide scanning angle.
Description
Technical Field
The invention belongs to the technical field of wireless communication, and particularly relates to a wide-angle high-scanning-rate millimeter wave leaky-wave antenna.
Background
In the 5G communication and small radar, the millimeter wave band attracts more and more attention of researchers. The propagation of millimeter waves is easily blocked by obstacles such as buildings, trees and the like, and the performance of the millimeter wave antenna is further influenced. However, beam steering antennas can solve this troublesome problem well.
A leaky-wave antenna is a beam steering antenna with a wide bandwidth and a narrow beam, and the beam scanning direction changes with the frequency. In addition, the one-dimensional plane leaky-wave antenna also has the advantages of simple feeding mode, low manufacturing cost, low section and the like, and has potential application value in the aspects of radar, microwave imaging, wireless communication and the like.
For leaky-wave antennas, the scan angle and scan rate are two important metrics for their performance. For most of the present millimeter wave leaky-wave antennas, there is a problem that the scanning angle is not wide or the scanning angle is wide, but the scanning rate is relatively low, so it can be inferred that it is a not small challenge to design a millimeter wave leaky-wave antenna with a high scanning rate and a wide scanning angle.
Disclosure of Invention
The invention aims to provide a millimeter wave leaky-wave antenna with a wide angle and a high scanning rate, and aims to solve the technical problem that the existing leaky-wave antenna is not high in scanning speed or wide in scanning angle.
In order to solve the technical problems, the specific technical scheme of the millimeter wave leaky-wave antenna with the wide angle and the high scanning rate is as follows:
the utility model provides a wide angle high scanning rate millimeter wave leaky-wave antenna, includes integrated substrate waveguide, integrated substrate waveguide includes the metal level, is equipped with a plurality of gap modulation unit on going up the metal level, gap modulation unit includes a rectangle gap, the rectangle gap is located gap modulation unit's intermediate position, gap modulation unit still includes two open-ended resonance rings, and two open-ended resonance ring openings are towards the rectangle gap, and the symmetry sets up on the both sides in rectangle gap.
Furthermore, the working frequency band of the antenna can be controlled by controlling the opening width gap of the opening resonant ring.
Furthermore, the number of the gap modulation units is multiple, the leaky-wave antenna is formed by arranging the gap modulation units along a straight line, and the intervals of the gap modulation units are equal.
Furthermore, microstrip lines are respectively arranged at two ends of the upper metal layer, each microstrip line is of a trapezoidal structure with one end gradually enlarged towards the end connected with the upper metal layer, and is communicated with the upper metal layer to realize impedance matching between the microstrip line and the integrated substrate waveguide.
Furthermore, the integrated substrate waveguide further comprises a dielectric substrate and a lower metal layer, the dielectric substrate is located between the upper metal layer and the lower metal layer, the dielectric substrate is provided with a plurality of conducting structures for conducting the upper metal layer and the lower metal layer, the conducting structures are arranged in two rows, and the gap modulation unit is located between the two rows of conducting structures.
Further, the conductive structure is a metallization hole.
Further, the open stopband of the leaky-wave antenna can be suppressed by adjusting the length of the slot.
Furthermore, the resistance value of the microstrip line is 50 ohms.
Furthermore, the leaky-wave antenna is composed of 15 slot modulation units.
The wide-angle high-scanning-rate millimeter wave leaky-wave antenna has the following advantages: the antenna consists of 15 elements. Two ends of the antenna are provided with a section of trapezoidal microstrip transition line so as to realize impedance matching between the microstrip line and the SIW. The CST2018 software is adopted for simulation of the antenna, and the slope of a dispersion curve in a 30.89GHz-34.07GHz frequency band is found to be negative from a simulated unit structure dispersion curve, namely the angle of a scanning main beam of the leaky-wave antenna points to the negative direction in the frequency band. The slope of the dispersion curve in the frequency band of 34.21GHz-36.65GHz is positive, i.e. the angle of the scanned main beam of the leaky-wave antenna points to the positive direction in the frequency band. In a frequency band of 31.7GHz-35.9GHz, parameters of S11 and S21 of the leaky-wave antenna are both less than-10 dB, in the frequency band, the main beam angle of the antenna is scanned from-58 degrees to +53 degrees, the total scanning angle reaches 111 degrees, and the relative bandwidth scanning rate can reach 8.93 degrees/%.
Drawings
FIG. 1 is a classic structure diagram of a leaky wave antenna;
fig. 2 is a perspective view of a unit of the leaky wave antenna of the invention;
FIG. 3 is a top view of the unit structure of the leaky-wave antenna of the invention;
fig. 4 is a bottom view of the unit structure of the leaky wave antenna of the invention;
FIG. 5 is a parametric representation of a leaky wave antenna of the invention;
FIG. 6 is a schematic diagram of a leaky-wave antenna structure according to the invention;
FIG. 7 is a simulated dispersion curve for a leaky-wave antenna unit of the invention;
FIG. 8 is the effect of gap size parameters of leaky-wave antennas of the invention on the dispersion of leaky-wave antenna elements;
FIG. 9 is a graph of the effect of gap size parameters of leaky-wave antennas of the present invention on the group delay of the antenna elements;
FIG. 10 is a simulation of S-parameters for a leaky-wave antenna according to the invention;
FIG. 11 is a simulated pattern for a leaky-wave antenna of the invention;
the symbols in the figure illustrate: 1. an upper metal layer; 2. a lower metal layer; 3. a dielectric substrate; 4. a conducting structure; 5. a gap modulation unit; 51. a rectangular slit; 52. an open resonant ring; 6. a microstrip line.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, a wide-angle high-scan-rate millimeter wave leaky-wave antenna of the present invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a classic structure of a leaky-wave antenna includes an integrated Substrate waveguide (SIW), where the integrated Substrate waveguide includes an upper metal layer 1, and a plurality of slot modulation units 5 are disposed on the upper metal layer 1, where the slot modulation units 5 include a rectangular slot 51.
As shown in fig. 2 to 3, the wide-angle high-scan-rate millimeter wave leaky-wave antenna of the invention is evolved from a classical structure, the slot modulation unit 5 further includes two split-ring resonators 52 (SRR), the rectangular slot 51 is located in the middle of the slot modulation unit 5, and the two split-ring resonators 52 are opened toward the rectangular slot 51 and symmetrically disposed on two sides of the rectangular slot 51. As shown in fig. 4-6, the relevant dimensional parameters of the leaky-wave antenna are marked. The open resonator loop 52 is used to increase the group delay and thus the scanning rate, and the operating frequency band of the antenna can be controlled by controlling the size parameter gap of the open resonator loop 52.
As shown in fig. 6, the number of the slot modulation units 5 is plural, and the leaky-wave antenna is formed by arranging the plurality of slot modulation units 5 in a straight line. The pitch of each slit modulation unit 5 is equal.
The microstrip line 6 is arranged at each of two ends of the upper metal layer 1, and the microstrip line 6 is of a trapezoidal structure with one end gradually enlarged towards the end connected with the upper metal layer 1 and is communicated with the upper metal layer 1 to realize impedance matching between the microstrip line 6 and the integrated substrate waveguide.
The integrated substrate waveguide further comprises a dielectric substrate 2 and a lower metal layer 3, the dielectric substrate 2 is located between the upper metal layer 1 and the lower metal layer 3, a plurality of conducting structures 4 conducting the upper metal layer 1 and the lower metal layer 3 are arranged on the dielectric substrate 2, the conducting structures 4 are arranged in two rows, and the gap modulation unit 5 is located between the two rows of conducting structures 4.
The conducting structure 4 is a metallized hole.
According to a space harmonic formula of the periodic leaky-wave antenna:
the positive and negative dispersion of the unit structure is obtained by adjusting the period length, so that the leaky-wave antenna can realize the forward and backward scanning of the wave beam. According to the invention, the two open resonant rings 52 are respectively added on the two sides of the rectangular slot 51, so that the scanning speed of the antenna is improved, the group delay is increased, and the beam scanning speed of the leaky-wave antenna is increased. The Open Stopband (OSB) of the leaky-wave antenna can be suppressed by adjusting the length of the slot.
The embodiment is as follows:
the leaky-wave antenna of this embodiment is composed of 15 slot modulation units, and is simulated by using the CST2018 software, as shown in fig. 7, which is a simulated dispersion curve of the present invention. The invention relates to a periodic leaky-wave antenna, wherein the propagation constant of spatial harmonics of the periodic leaky-wave antenna can be expressed as follows:
therefore, its negative dispersion can be achieved by adjusting the period length. The OSB can be obtained by adjusting the parameter L 3 The maximum suppression is performed.
As shown in fig. 8, the effect of gap size parameters on dispersion for the antenna of the present invention. The smaller the value of gap, the lower the frequency band corresponding to the dispersion, i.e. the antenna can also control the working frequency band of the antenna by controlling the value of gap.
As shown in fig. 9, the influence of the gap size parameter of the antenna of the present invention on the group delay of the antenna elements is shown. The smaller the value of gap, the larger the group delay of the antenna unit, and the larger the scanning rate of the corresponding antenna.
As shown in fig. 6, is an overall antenna diagram of the present invention. Two ends of the antenna are respectively connected with a 50-ohm microstrip line for feeding.
The relevant dimensional parameter values of the leaky-wave antenna of the invention are shown in table 1:
table 1: the size parameters are as follows: (unit mm)
| Parameter(s) | L | W | W feed | L feed | W 1 | L 1 |
| Numerical value | 78 | 4.7 | 1.3 | 5 | 1 | 3 |
| Parameter(s) | W 2 | L 2 | W 3 | L 3 | P | s |
| Numerical value | 0.315 | 1.4 | 0.75 | 0.5 | 4 | 0.5 |
| Parameter(s) | d | gap | W 4 | |||
| Numerical value | 0.4 | 0.15 | 0.15 |
As shown in fig. 10, is a simulated S parameter of the antenna of the present invention. In the frequency band of 31.7GHz-35.9GHz, both the S11 and S21 parameters are less than-10 dB, indicating that the antenna is well matched and that a significant amount of electromagnetic energy has been radiated outward in this frequency band.
Fig. 11 shows a simulated pattern of the antenna of the present invention. In a frequency band of 31.7GHz-35.9GHz, a main beam of a directional diagram is scanned from-58 degrees to +53 degrees, the total scanning angle is 111 degrees, and the scanning rate reaches 8.93 degrees/%.
The invention has the beneficial effects that:
the antenna consists of 15 elements. Two ends of the antenna are provided with a section of trapezoidal microstrip transition line so as to realize impedance matching between the microstrip line and the SIW. The CST2018 software is adopted for simulation of the antenna, and the slope of a dispersion curve in a 30.89GHz-34.07GHz frequency band is found to be negative from a simulated unit structure dispersion curve, namely the angle of a scanning main beam of the leaky-wave antenna points to the negative direction in the frequency band. The slope of the dispersion curve in the frequency band of 34.21GHz-36.65GHz is positive, i.e. the angle of the scanned main beam of the leaky-wave antenna points to the positive direction in the frequency band. In a frequency band of 31.7GHz-35.9GHz, parameters of S11 and S21 of the leaky-wave antenna are both less than-10 dB, in the frequency band, the main beam angle of the antenna is scanned from-58 degrees to +53 degrees, the total scanning angle reaches 111 degrees, and the relative bandwidth scanning rate can reach 8.93 degrees/%.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides a high scanning rate millimeter wave leaky-wave antenna of wide angle, includes integrated substrate waveguide, integrated substrate waveguide includes metal level (1), goes up and is equipped with a plurality of gap modulation unit (5) on metal level (1), gap modulation unit (5) are including a rectangle gap (51), rectangle gap (51) are located the intermediate position of gap modulation unit (5), its characterized in that, gap modulation unit (5) still include two opening resonance ring (52), and two opening resonance ring (52) openings are towards rectangle gap (51), and the symmetry sets up on the both sides of rectangle gap (51).
2. The wide-angle high-scan-rate millimeter wave leaky-wave antenna as claimed in claim 1, wherein the operating frequency band of the antenna can be controlled by controlling the opening width gap of said open resonator ring (52).
3. The wide-angle high-scan-rate millimeter wave leaky-wave antenna according to claim 1, characterized in that the number of the slot modulation units (5) is multiple, the leaky-wave antenna is formed by arranging a plurality of slot modulation units (5) along a straight line, and the pitch of each slot modulation unit (5) is equal.
4. The wide-angle high-scan-rate millimeter wave leaky-wave antenna according to claim 1, characterized in that microstrip lines (6) are respectively disposed at two ends of the upper metal layer (1), and the microstrip lines (6) are of a trapezoidal structure with one end gradually increasing towards the end connected with the upper metal layer (1), and are conducted with the upper metal layer (1) to realize impedance matching between the microstrip lines (6) and the integrated substrate waveguide.
5. The wide-angle high-scan-rate millimeter wave leaky-wave antenna according to claim 1, characterized in that the integrated substrate waveguide further comprises a dielectric substrate (2) and a lower metal layer (3), the dielectric substrate (2) is located between the upper metal layer (1) and the lower metal layer (3), a plurality of conducting structures (4) for conducting the upper metal layer (1) and the lower metal layer (3) are arranged on the dielectric substrate (2), the conducting structures (4) are arranged in two rows, and the gap modulation unit (5) is located between the two rows of conducting structures (4).
6. The wide-angle high-scan-rate millimeter-wave leaky-wave antenna as claimed in claim 5, wherein said conducting structure (4) is a metallized hole.
7. The wide-angle high-scan-rate millimeter-wave leaky-wave antenna as claimed in claim 1, wherein an open stop band of the leaky-wave antenna can be suppressed by adjusting a length of the slot.
8. The wide-angle high-scan-rate millimeter wave leaky-wave antenna according to claim 4, characterized in that the resistance of the microstrip line (6) is 50 ohms.
9. The wide-angle high-scan-rate millimeter-wave leaky-wave antenna according to claim 1, characterized in that the leaky-wave antenna is composed of 15 slot modulation units (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110896667.4A CN113612026B (en) | 2021-08-05 | 2021-08-05 | Wide-angle high-scanning-rate millimeter wave leaky-wave antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110896667.4A CN113612026B (en) | 2021-08-05 | 2021-08-05 | Wide-angle high-scanning-rate millimeter wave leaky-wave antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113612026A CN113612026A (en) | 2021-11-05 |
| CN113612026B true CN113612026B (en) | 2023-03-10 |
Family
ID=78307135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110896667.4A Active CN113612026B (en) | 2021-08-05 | 2021-08-05 | Wide-angle high-scanning-rate millimeter wave leaky-wave antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113612026B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060045003A (en) * | 2004-08-21 | 2006-05-16 | 삼성전자주식회사 | The small planar antenna with enhanced bandwidth and the small rectenna for rfid and wireless sensor transponders |
| CN102637958A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院空间科学与应用研究中心 | Composite left-right-hand transmission line type narrow band wide-range frequency scan antenna |
| CN105356047A (en) * | 2015-11-30 | 2016-02-24 | 杭州电子科技大学 | High gain wide angle double-frequency segment scanning antenna |
| CN112768921A (en) * | 2020-12-30 | 2021-05-07 | 杭州电子科技大学 | High-scanning-rate leaky-wave antenna based on metamaterial unit |
-
2021
- 2021-08-05 CN CN202110896667.4A patent/CN113612026B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060045003A (en) * | 2004-08-21 | 2006-05-16 | 삼성전자주식회사 | The small planar antenna with enhanced bandwidth and the small rectenna for rfid and wireless sensor transponders |
| CN102637958A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院空间科学与应用研究中心 | Composite left-right-hand transmission line type narrow band wide-range frequency scan antenna |
| CN105356047A (en) * | 2015-11-30 | 2016-02-24 | 杭州电子科技大学 | High gain wide angle double-frequency segment scanning antenna |
| CN112768921A (en) * | 2020-12-30 | 2021-05-07 | 杭州电子科技大学 | High-scanning-rate leaky-wave antenna based on metamaterial unit |
Non-Patent Citations (2)
| Title |
|---|
| 《Leaky-Wave Antenna Designed in SIW Technique With SRR Slots》;Izabela Slomian等;《2018 22nd International Microwave and Radar Conference (MIKON)》;20180517;全文 * |
| 《Open-Stopband Suppression and Cross-Polarization Reduction of a Substrate Integrated Waveguide Leaky-Wave Antenna》;Debabrata K. Karmokar等;《URSI AP-RASC 2019》;20190315;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113612026A (en) | 2021-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103840271B (en) | A kind of multiband back cavity type half module substrate integrated wave guide bent slit antenna | |
| CN112952372A (en) | Millimeter wave band ultra-wideband patch antenna based on substrate integrated waveguide feed | |
| CN109560375A (en) | Periodically orthogonal meander line leaky-wave antenna | |
| CN108933331B (en) | Archimedes spiral array antenna | |
| CN112886225A (en) | High-gain high-voltage-resistant ultra-wideband butt Vivaldi antenna | |
| CN213816410U (en) | Silicon-based millimeter wave gradient slot line antenna | |
| CN113612026B (en) | Wide-angle high-scanning-rate millimeter wave leaky-wave antenna | |
| CN112054305B (en) | Periodic leaky-wave antenna based on composite left-right-hand structure and highly stable gain | |
| CN111697350B (en) | Broadband SIW slot antenna based on 77GHz balanced symmetrical formula feed | |
| Bemani et al. | A novel wide-band microstrip Yagi-Uda array antenna for WLAN applications | |
| CN103094676A (en) | Ultra wide band antenna provided with T-shaped structure and matched branches and having band elimination characteristic | |
| CN111092293B (en) | Beam scanning antenna based on composite left-right hand structure | |
| CN110190393B (en) | High-gain gradient slot line antenna loaded by metal column lens | |
| CN110061348B (en) | Radial multi-beam gap waveguide slot antenna array applied to microwave band | |
| CN116613545A (en) | Medium type artificial surface plasmon band-pass filtering array antenna | |
| CN110783710A (en) | Vivaldi antenna capable of realizing low return loss and high gain at low frequency | |
| CN113690636B (en) | Millimeter wave wide-angle scanning phased-array antenna based on super surface | |
| CN110739536B (en) | Half-mode Vivaldi antenna and miniaturized large-angle frequency scanning antenna array | |
| CN112635994A (en) | Microstrip series feed antenna and millimeter wave radar | |
| CN113675594A (en) | High-efficiency leaky-wave antenna | |
| CN113471677A (en) | In-band notch broadband antenna applied to WLAN frequency band | |
| CN110661105A (en) | Slotted two-side periodic short circuit nail microstrip leaky-wave antenna for floor | |
| CN117060065B (en) | Millimeter wave super-surface antenna | |
| CN110247168B (en) | High-gain gradual change slot line antenna loaded by medium air hole | |
| CN216872250U (en) | Compact broadband crescent patch pair antenna |
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 |