CN113471687B - Millimeter wave substrate integrated waveguide antenna - Google Patents
Millimeter wave substrate integrated waveguide antenna Download PDFInfo
- Publication number
- CN113471687B CN113471687B CN202110649484.2A CN202110649484A CN113471687B CN 113471687 B CN113471687 B CN 113471687B CN 202110649484 A CN202110649484 A CN 202110649484A CN 113471687 B CN113471687 B CN 113471687B
- Authority
- CN
- China
- Prior art keywords
- substrate
- integrated waveguide
- antenna
- feed
- metallized
- 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
- 239000000758 substrate Substances 0.000 title claims abstract description 154
- 230000008878 coupling Effects 0.000 claims abstract description 59
- 238000010168 coupling process Methods 0.000 claims abstract description 59
- 238000005859 coupling reaction Methods 0.000 claims abstract description 59
- 238000009812 interlayer coupling reaction Methods 0.000 claims abstract description 38
- 230000005855 radiation Effects 0.000 claims abstract description 16
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application provides a millimeter wave substrate integrated waveguide antenna, which comprises a bottom substrate, a middle substrate and a top substrate; the substrate is provided with a substrate integrated waveguide plane magic T structure and two first power splitters, the substrate integrated waveguide plane magic T structure is provided with a first input feed structure and a second input feed structure, and the first input feed structure and the second input feed structure are respectively used for generating a beam of a sum signal and a beam of a difference signal through a single pulse feed network; the first power divider is provided with a first interlayer coupling gap; the middle substrate is provided with two second power dividers, a second interlayer coupling gap is arranged in the second power dividers, and the two first power dividers and the two second power dividers are electrically coupled through the first interlayer coupling gap and the second interlayer coupling gap; a first feed coupling gap is arranged in the second power divider; the top substrate is provided with a second feed coupling gap, and is provided with an antenna radiation array; the first feed coupling slot and the second feed coupling slot are electrically coupled.
Description
Technical Field
The application belongs to the technical field of antennas, and particularly relates to a millimeter wave substrate integrated waveguide antenna.
Background
As is well known, millimeter waves have wide application prospects in the application fields of new generation mobile communication, security inspection imaging, internet of things, biomedicine, high data rate communication, radar detection and other army and civil fields due to the characteristics of short wavelength, high frequency, wide frequency band and the like. Millimeter wave devices and antenna designs are being widely studied, the excellent characteristics of millimeter waves can be fully utilized in the design process of the millimeter wave substrate integrated waveguide antenna, an array is easy to form, the structure is compact, the absolute bandwidth is wide, and accordingly, the design of the millimeter wave substrate integrated waveguide antenna has very high requirements on the size of a processing structure and the reduction of loss.
In the case of combining a compact antenna structure and a high gain broadband, there is a need to provide an innovative and more reasonable design scheme of the millimeter wave substrate integrated waveguide antenna.
Disclosure of Invention
An object of the embodiments of the present application is to provide a millimeter wave substrate integrated waveguide antenna, which has the technical advantages of compact structure and low loss.
In order to achieve the above purpose, the technical scheme adopted in the application is as follows: providing a millimeter wave substrate integrated waveguide antenna, which comprises a bottom substrate, a middle substrate and a top substrate; wherein,,
the substrate integrated waveguide is arranged on the bottom substrate; the substrate integrated waveguide comprises a substrate integrated waveguide plane magic T structure and two first power dividers, the two first power dividers are symmetrically arranged about the substrate integrated waveguide plane magic T structure, and the substrate integrated waveguide plane magic T structure and the two first power dividers form a single-pulse feed network; the substrate integrated waveguide plane magic T structure is provided with a first input feed structure and a second input feed structure, and the first input feed structure and the second input feed structure are respectively used for generating a beam of a sum signal and a beam of a difference signal through the single-pulse feed network; a first interlayer coupling gap is formed in one side, facing the middle substrate, of the first power divider;
the middle substrate is provided with two second power dividers, and a second interlayer coupling gap is arranged in each second power divider; the two first power dividers and the two second power dividers are arranged in a one-to-one opposite mode, and the two first power dividers and the two second power dividers are electrically coupled through the first interlayer coupling gap and the second interlayer coupling gap; a first feed coupling gap is formed in one side, facing the top substrate, of the second power divider;
a second feed coupling gap is formed in one side, facing the middle substrate, of the top substrate, and an antenna radiation array is arranged in one side, facing away from the middle substrate, of the top substrate; the first feed coupling slot and the second feed coupling slot are electrically coupled, and the second feed coupling slot is used for feeding electromagnetic waves to the antenna radiation array to radiate the millimeter wave substrate integrated waveguide antenna.
In one embodiment, the substrate integrated waveguide comprises two rows of metallized through holes, namely an inner row of metallized through holes and an outer row of metallized through holes, wherein the inner row of metallized through holes and the outer row of metallized through holes are arranged at intervals; the inner-row metallized through holes comprise a plurality of metallized through holes which are sequentially arranged at intervals, and the outer-row metallized through holes comprise a plurality of metallized through holes which are sequentially arranged at intervals;
the substrate integrated waveguide is configured to allow for adjustment of the cut-off frequency of electromagnetic wave signals by adjusting the spacing distance of the inner row of metallized through holes from the outer row of metallized through holes and/or the aperture of the metallized through holes.
In one embodiment, the antenna radiation array comprises a plurality of antenna units, the antenna units are arranged according to a set array to form the antenna radiation array, and each antenna unit is I-shaped; the second feed coupling gap comprises a plurality of single gaps, the single gaps are distributed according to the set array to form the second feed coupling gap, and each single gap is I-shaped;
the center of the antenna radiating array and the center of the second feed coupling slot coincide, and the antenna element and the single slot are mutually orthogonal.
In one embodiment, the set array is N rows and M columns, where N is greater than M; and, in addition, the method comprises the steps of,
the single-row arrangement direction of the N rows is the width direction of the top substrate;
the single-column arrangement direction of the M columns is the length direction of the top substrate.
In one embodiment, each of the antenna elements is a dual patch antenna element.
In one embodiment, the second interlayer coupling slit comprises two pairs of slits, each pair of slits comprising two linear slits parallel to each other;
the first feed coupling gap comprises a plurality of single gaps, the single gaps are distributed according to a set array to form the second feed coupling gap, and the two pairs of gaps are symmetrically arranged relative to the second feed coupling gap.
In one embodiment, the set array is N rows and M columns, where N is greater than M; and, in addition, the method comprises the steps of,
the single-row arrangement direction of the N rows is the width direction of the middle substrate, the single-row arrangement direction of the M rows is the length direction of the middle substrate, and the two pairs of slits are symmetrically arranged on two sides of the second feed coupling slit along the single-row arrangement direction.
In one embodiment, an operating bandwidth expanding structure is arranged in a region between the second interlayer coupling gap and the first feed coupling gap;
the working bandwidth expansion structure comprises 3 metallized through holes, and the 3 metallized through holes are respectively positioned on three vertexes of the same triangle.
In one embodiment, the first input feed structure and the second input feed structure are both standard rectangular waveguide port structures.
In one embodiment, the first interlayer coupling gap is a blind via structure;
the second interlayer coupling gap is of a through hole structure.
The millimeter wave substrate integrated waveguide antenna has the beneficial effects that:
compared with the prior art, the millimeter wave substrate integrated waveguide antenna has the advantages that the single-pulse feed network is arranged on the base substrate based on the substrate integrated waveguide plane magic T structure and the two first power splitters, the first input feed structure and the second input feed structure can respectively generate beams of sum signals and beams of difference signals through the single-pulse feed network, electromagnetic waves of the base substrate are transmitted into the middle substrate through the first interlayer coupling gap and the second interlayer coupling gap, and the middle substrate is electrically coupled through the first feed coupling gap and the first feed coupling gap to feed the electromagnetic waves to the antenna radiation array to radiate the millimeter wave substrate integrated waveguide antenna.
The millimeter wave substrate integrated waveguide antenna can simultaneously provide a plurality of beams, and the antenna for forming the sum signal and the difference signal required by direction finding is formed by utilizing a single pulse echo, namely, the single pulse feed network is based on a magic T structure on a base substrate to generate electromagnetic wave signals with the same amplitude and opposite phase, and the single pulse feed network designed by utilizing the substrate integrated waveguide and the printed circuit board technology can provide better bandwidth and transmission performance, so that phase errors can be remarkably reduced when the sum signal and the difference signal are formed. In addition, the optimal design of feed is achieved through slot coupling, the bandwidth and the gain of the antenna radiating array are obviously improved, namely, a good foundation is provided for the millimeter wave substrate integrated waveguide antenna, the antenna has the performance of compact structure, wide frequency band and high gain, and the antenna has wide application prospect in the millimeter wave frequency band. The millimeter wave substrate integrated waveguide antenna is particularly suitable for millimeter wave sensing and communication application, and the combination of the antenna design and the single-pulse feed network of the millimeter wave substrate integrated waveguide antenna can radiate sum beams and difference beams, so that the millimeter wave substrate integrated waveguide antenna can be suitable for single-pulse application of high-gain sum-difference beam switching.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an exploded view of a millimeter wave substrate integrated waveguide antenna provided in an embodiment of the present application;
FIG. 2 is a schematic view of a side of a top substrate facing away from a middle substrate according to an embodiment of the present application;
FIG. 3 is a schematic side view of a top substrate facing a middle substrate provided in an embodiment of the present application;
FIG. 4 is a schematic side view of an intermediate substrate facing a top substrate provided in an embodiment of the present application;
FIG. 5 is a schematic side view of an intermediate substrate facing a base substrate according to an embodiment of the present application;
FIG. 6 is a schematic side view of a base substrate facing an intermediate substrate according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a side of a base substrate facing away from an intermediate substrate according to an embodiment of the present application;
fig. 8 is a diagram of S-parameter simulation results when the millimeter wave substrate integrated waveguide antenna provided in the embodiment of the present application works;
fig. 9 is a normalized directivity diagram of radiation of a millimeter wave substrate integrated waveguide antenna provided in an embodiment of the present application at a frequency point of 60 GHz.
Wherein, each reference sign in the figure:
100. a base substrate; 200. an intermediate substrate; 300. a top substrate;
101. a substrate integrated waveguide plane magic T structure; 102. a first power divider; 103. a first interlayer coupling slit; 101a, a first input feed structure; 101b, a second input feed structure; 101c, inner row of metallized through holes; 101d, outer row of metallized through holes;
201. a second power divider; 202. a second interlayer coupling slit; 203. a first feed coupling slot; 204. a working bandwidth expanding structure;
301. a second feed coupling slot; 302. an antenna radiates the array.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
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 or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The millimeter wave substrate integrated waveguide antenna provided by the embodiment of the application will now be described.
Referring to fig. 1 to 7, the millimeter wave substrate integrated waveguide antenna provided in the present application includes a bottom substrate 100, a middle substrate 200, and a top substrate 300.
Wherein, the base substrate 100 is provided with a substrate integrated waveguide; the substrate integrated waveguide comprises a substrate integrated waveguide plane magic T structure 101 and two first power splitters 102, wherein the two first power splitters 102 are symmetrically arranged relative to the substrate integrated waveguide plane magic T structure 101, and the substrate integrated waveguide plane magic T structure 101 and the two first power splitters 102 form a single pulse feed network; the substrate integrated waveguide planar magic T-structure 101 has a first input feed structure 101a and a second input feed structure 101b, the first input feed structure 101a and the second input feed structure 101b being respectively used for generating a beam of a sum signal and a beam of a difference signal by the single pulse feed network; a first interlayer coupling slit 103 is provided in the first power divider 102 at a side facing the intermediate substrate 200.
Wherein, the middle substrate 200 is provided with two second power splitters 201, and a second interlayer coupling gap 202 is arranged in the second power splitters 201; the two first power splitters 102 and the two second power splitters 201 are arranged opposite to each other one by one, and the two first power splitters 102 and the two second power splitters 201 are electrically coupled through the first interlayer coupling gap 103 and the second interlayer coupling gap 202; a first feed coupling slit 203 is arranged in the second power divider 201 on a side facing the top substrate 300.
Wherein, a second feed coupling slot 301 is disposed on a side of the top substrate facing the middle substrate 200, and an antenna radiation array 302 is disposed on a side of the top substrate facing away from the middle substrate 200; the first feed coupling slot 203 and the second feed coupling slot 301 are electrically coupled, and the second feed coupling slot 301 is used for feeding electromagnetic waves to the antenna radiating array 302 to radiate the millimeter wave substrate integrated waveguide antenna.
The first power divider 102 and the second power divider 201 are two-in-one power dividers, and the two first power dividers 102 and the two second power dividers 201 are electrically coupled through the first interlayer coupling gap 103 and the second interlayer coupling gap 202 to form a four-in-one power divider.
The millimeter wave substrate integrated waveguide antenna provided by the application is that a single pulse feed network is arranged on a base substrate 100 based on a substrate integrated waveguide plane magic T structure 101 and two first power splitters 102, a first input feed structure 101a and a second input feed structure 101b can respectively generate a beam of a sum signal and a beam of a difference signal through the single pulse feed network, electromagnetic waves of the base substrate 100 are transmitted into an intermediate substrate 200 through the first interlayer coupling slot 103 and the second interlayer coupling slot 202, the intermediate substrate 200 is electrically coupled through the first feed coupling slot 203 and the first feed coupling slot 203, and the electromagnetic waves are fed to an antenna radiation array 302 to radiate the millimeter wave substrate integrated waveguide antenna.
In one embodiment, the substrate integrated waveguide includes two rows of metallized through holes, which are an inner row of metallized through holes 101c and an outer row of metallized through holes 101d, respectively, and the inner row of metallized through holes 101c and the outer row of metallized through holes 101d are spaced apart; the inner-row metallized through holes 101c include a plurality of metallized through holes arranged at intervals in sequence, and the outer-row metallized through holes 101d include a plurality of metallized through holes arranged at intervals in sequence, and electromagnetic waves can propagate between the metallized through holes.
The substrate integrated waveguide is configured to allow the cutoff frequency of the electromagnetic wave signal to be adjusted by adjusting the interval distance between the inner row of metallized through holes 101c and the outer row of metallized through holes 101d and/or the aperture of the metallized through holes so as to enable the electromagnetic wave signal to work in a fundamental mode, and the electromagnetic wave leakage can be prevented by adjusting the interval between the metallized through holes, so that the millimeter wave substrate integrated waveguide antenna has good transmission performance in a millimeter wave frequency band.
In one embodiment, the antenna radiating array 302 includes a plurality of antenna units, where the plurality of antenna units are arranged according to a set array to form the antenna radiating array 302, and each of the antenna units is in an i shape; the second feed coupling slot 301 includes a plurality of single slots, the plurality of single slots are arranged according to the set array to form the second feed coupling slot 301, and each single slot is in an i shape; the center of the antenna radiating array 302 and the center of the second feed coupling slot 301 coincide, and both the antenna element and the single slot are mutually orthogonal.
In one embodiment, each of the antenna units is a dual patch antenna unit, where the dual patch antenna unit is an antenna unit formed by combining two patches connected by a microstrip transmission line, and the dual patch antenna unit may also be regarded as an i-shaped structure.
The center of the antenna radiating array 302 coincides with the center of the second feed coupling slot 301, and the two i-shaped structures are mutually orthogonal, so that after the slot is coupled to the top substrate 300, the slot is transferred into the microstrip line at the center of the antenna radiating unit, and then transferred to the patches at two sides, so that the antenna radiating array 302 works. The application adopts the binary paster, so that the effective area of the antenna of one path of feed source is improved, the gain of a unit is further improved, and the gain of the whole array is also improved.
In one embodiment, the set array is N rows and M columns, where N is greater than M; the single-row arrangement direction of the N rows is the width direction of the top substrate 300; the single row direction of the M rows is the length direction of the top substrate 300. For example, the set array is 4 rows and 2 columns.
The first feed coupling slot 203 and the second feed coupling slot 301 are identical in shape and are both in an i shape, the i-shaped feed coupling slot is a feed source of the upper antenna radiating array 302, the feed structure directly affects the performance of the antenna, and the i-shaped structure is considered during design, so that the broadband requirement can be realized.
In one embodiment, the second interlayer coupling slit 202 includes two pairs of slits, each pair of slits including two linear slits parallel to each other; the first feed coupling slot 203 includes a plurality of single slots, the plurality of single slots are arranged according to a set array to form the second feed coupling slot 301, and the two pairs of slots are symmetrically arranged with respect to the second feed coupling slot 301.
In one embodiment, the set array is N rows and M columns, where N is greater than M; and, the single-row arrangement direction of the N rows is the width direction of the middle substrate 200, the single-row arrangement direction of the M rows is the length direction of the middle substrate 200, and the two pairs of slits are symmetrically arranged at two sides of the second feed coupling slit 301 along the single-row arrangement direction. For example, the set array is 4 rows and 2 columns.
In one embodiment, an operating bandwidth expanding structure 204 is disposed in a region between the second interlayer coupling slot 202 and the first feeding coupling slot 203; the working bandwidth extension structure 204 includes 3 metallized through holes, and the 3 metallized through holes are respectively located on three vertices of the same triangle. The 3 metallized through holes are matched with I-shaped feed coupling slots and the antenna radiating array 302 to realize the design of a broadband, and the number of the metallized through holes and the relative positions of the metallized through holes and the feed coupling slots in the substrate integrated waveguide can be flexibly set, so that the number of resonance points of electromagnetic waves at the positions is increased, and the broadening of a frequency band is achieved. In this embodiment, the preferred operating bandwidth extension structure 204 includes 3 metallized vias.
In one embodiment, the first input feed structure 101a and the second input feed structure 101b are standard rectangular waveguide port structures, impedance matching performance of the first input feed structure 101a and the second input feed structure 101b can be adjusted through a radiation metal sheet and a metallized through hole, electromagnetic waves are transmitted from the standard rectangular waveguide port structures to enter the substrate integrated waveguide through the first input feed structure 101a and the second input feed structure 101b, radiation shielding effect is good, reflection of small electromagnetic wave signals on a wide frequency band is achieved, and loss is reduced. Preferably, the standard rectangular waveguide port structure is mounted and secured with a flange during assembly.
In one embodiment, the first interlayer coupling slit 103 is a blind via structure, and the second interlayer coupling slit 202 is a through via structure.
The millimeter wave substrate integrated waveguide antenna can simultaneously provide a plurality of beams, the antenna of sum signal and difference signal required by direction finding is formed by utilizing a single pulse echo, a single pulse feed network designed by the substrate integrated waveguide and the printed circuit board technology can provide better bandwidth and transmission performance, and phase errors can be obviously reduced when the sum signal and the difference signal are formed. In addition, the bandwidth and gain of the antenna radiating array 302 are obviously improved through the slot coupling to achieve the optimal design of feed, namely, a good foundation is provided for the millimeter wave substrate integrated waveguide antenna, so that the antenna has a wide application prospect in the millimeter wave frequency band. The millimeter wave substrate integrated waveguide antenna is particularly suitable for millimeter wave sensing and communication application, and the combination of the antenna design and the single-pulse feed network of the millimeter wave substrate integrated waveguide antenna can radiate sum beams and difference beams, so that the millimeter wave substrate integrated waveguide antenna can be suitable for single-pulse application of high-gain sum-difference beam switching.
As shown in fig. 8, fig. 8 is a diagram of S-parameter simulation results when the millimeter wave substrate integrated waveguide antenna provided in the present application works. In the figure, S11 is the reflection coefficient when the first input feed structure 101a inputs signals, the second input feed structure 101b is connected with a fixed matching load, S11< -10dB is taken as a reference, and the operating bandwidth of the first input feed structure 101a when inputting signals is 56.4-67GHz; in the figure, S22 is the reflection coefficient when the second input feed structure 101b inputs signals, the first input feed structure 101a is connected with a fixed matching load, S22< -10dB is taken as a reference, the working bandwidth of the second input feed structure 101b when input is 56-66.4GHz, the whole antenna can work at 56.4-66.4GHz, the absolute bandwidth reaches 10GHz, and the relative bandwidth is 16.3%.
As shown in fig. 9, fig. 9 shows a normalized directivity pattern of radiation of a millimeter wave substrate integrated waveguide antenna provided by the application at a frequency point of 60GHz and a beam and a difference beam, and a result is output by professional electromagnetic simulation software, wherein the beam in the figure and the beam are input signals by a first input feed structure 101a, and a second input feed structure 101b is connected with the beam directivity pattern when a matched load is fixed, so that the gain reaches 19.6dBi; in the figure, the difference beam is a beam pattern when the second input feed structure 101b inputs a signal, the first input feed structure 101a is connected to a fixed matching load, the gain reaches 17dBi, and the difference beam and the beam are 28dB different at the 0 ° position, that is, 28dB of single pulse zero depth.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (10)
1. The millimeter wave substrate integrated waveguide antenna is characterized in that:
comprises a bottom substrate (100), a middle substrate (200) and a top substrate (300); wherein,,
the base substrate (100) is provided with a substrate integrated waveguide; the substrate integrated waveguide comprises a substrate integrated waveguide plane magic T structure (101) and two first power splitters (102), wherein the two first power splitters (102) are symmetrically arranged relative to the substrate integrated waveguide plane magic T structure (101), and the substrate integrated waveguide plane magic T structure (101) and the two first power splitters (102) form a single-pulse feed network; the substrate integrated waveguide planar magic T structure (101) has a first input feed structure (101 a) and a second input feed structure (101 b), the first input feed structure (101 a) and the second input feed structure (101 b) being respectively for generating a beam of a sum signal and a beam of a difference signal by the single pulse feed network; a first interlayer coupling gap (103) is formed in one side, facing the middle substrate (200), of the first power divider (102); the first power divider (102) and the second power divider (201) are one-to-two power dividers, and the two first power dividers (102) and the two second power dividers (201) are electrically coupled through a first interlayer coupling gap (103) and a second interlayer coupling gap (202) to form one-to-four power divider;
the intermediate substrate (200) is provided with two second power splitters (201), and a second interlayer coupling gap (202) is arranged in the second power splitters (201); the two first power dividers (102) and the two second power dividers (201) are arranged in a one-to-one opposite mode, and the two first power dividers (102) and the two second power dividers (201) are electrically coupled through the first interlayer coupling gap (103) and the second interlayer coupling gap (202); a first feed coupling gap (203) is arranged in the second power divider (201) towards one side of the top substrate (300);
a second feed coupling slot (301) is formed in one side, facing the middle substrate (200), of the top substrate, and an antenna radiation array (302) is formed in one side, facing away from the middle substrate (200), of the top substrate; the first feed coupling gap (203) and the second feed coupling gap (301) are electrically coupled, and the second feed coupling gap (301) is used for feeding electromagnetic waves to the antenna radiation array (302) to radiate the millimeter wave substrate integrated waveguide antenna, wherein the first feed coupling gap (203) and the second feed coupling gap (301) are identical in shape and all are I-shaped.
2. The millimeter wave substrate integrated waveguide antenna of claim 1, wherein:
the substrate integrated waveguide comprises two rows of metallized through holes, namely an inner row of metallized through holes (101 c) and an outer row of metallized through holes (101 d), wherein the inner row of metallized through holes (101 c) and the outer row of metallized through holes (101 d) are arranged at intervals; the inner-row metallized through holes (101 c) comprise a plurality of metallized through holes which are sequentially arranged at intervals, and the outer-row metallized through holes (101 d) comprise a plurality of metallized through holes which are sequentially arranged at intervals;
the substrate integrated waveguide is arranged to allow for adjusting the cut-off frequency of electromagnetic wave signals by adjusting the spacing distance of the inner row of metallized through holes (101 c) from the outer row of metallized through holes (101 d) and/or the aperture of the metallized through holes.
3. The millimeter wave substrate integrated waveguide antenna of claim 2, wherein:
the antenna radiation array (302) comprises a plurality of antenna units, the antenna units are arranged according to a set array to form the antenna radiation array (302), and each antenna unit is I-shaped; the second feed coupling gap (301) comprises a plurality of single gaps, the single gaps are distributed according to the set array to form the second feed coupling gap (301), and each single gap is I-shaped;
the center of the antenna radiating array (302) and the center of the second feed coupling slot (301) coincide, and both the antenna element and the single slot are mutually orthogonal.
4. The millimeter wave substrate integrated waveguide antenna of claim 3, wherein:
the setting array is N rows and M columns, wherein N is larger than M; and, in addition, the method comprises the steps of,
the single-row arrangement direction of the N rows is the width direction of the top substrate (300);
the single-column arrangement direction of the M columns is the length direction of the top substrate (300).
5. The millimeter wave substrate integrated waveguide antenna of claim 3 or 4, wherein:
each antenna unit is a dual patch antenna unit.
6. The millimeter wave substrate integrated waveguide antenna of claim 1, wherein:
the second interlayer coupling gap (202) comprises two pairs of gaps, and each pair of the two pairs of the gaps comprises two linear gaps which are parallel to each other;
the first feed coupling slit (203) comprises a plurality of single slits, the single slits are distributed according to a set array to form the second feed coupling slit (301), and the two pairs of slits are symmetrically arranged relative to the second feed coupling slit (301).
7. The millimeter wave substrate integrated waveguide antenna of claim 6, wherein:
the setting array is N rows and M columns, wherein N is larger than M; and, in addition, the method comprises the steps of,
the single-row arrangement direction of the N rows is the width direction of the middle substrate (200), the single-row arrangement direction of the M rows is the length direction of the middle substrate (200), and the two pairs of slits are symmetrically arranged on two sides of the second feed coupling slit (301) along the single-row arrangement direction.
8. The millimeter wave substrate integrated waveguide antenna of claim 6, wherein:
an operating bandwidth expanding structure (204) is arranged in the area between the second interlayer coupling gap (202) and the first feed coupling gap (203); the operating bandwidth extension structure (204) includes 3 metallized through holes, the 3 metallized through holes being located on three vertices of the same triangle, respectively.
9. The millimeter wave substrate integrated waveguide antenna of claim 1, wherein:
the first input feed structure (101 a) and the second input feed structure (101 b) are both standard rectangular waveguide port structures.
10. The millimeter wave substrate integrated waveguide antenna of claim 1, wherein:
the first interlayer coupling gap (103) is of a blind hole structure;
the second interlayer coupling gap (202) is a through hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649484.2A CN113471687B (en) | 2021-06-10 | 2021-06-10 | Millimeter wave substrate integrated waveguide antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649484.2A CN113471687B (en) | 2021-06-10 | 2021-06-10 | Millimeter wave substrate integrated waveguide antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113471687A CN113471687A (en) | 2021-10-01 |
| CN113471687B true CN113471687B (en) | 2023-05-12 |
Family
ID=77869562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110649484.2A Active CN113471687B (en) | 2021-06-10 | 2021-06-10 | Millimeter wave substrate integrated waveguide antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113471687B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207082637U (en) * | 2017-05-23 | 2018-03-09 | 中国人民解放军陆军工程大学 | Substrate integrated waveguide slot antenna based on high-order mode feed |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987911B (en) * | 2018-06-08 | 2020-07-31 | 西安电子科技大学 | Millimeter wave beam forming microstrip array antenna based on SIW and design method |
| CN109066063A (en) * | 2018-07-18 | 2018-12-21 | 华中科技大学 | A kind of low section LTCC millimeter wave double polarization array antenna |
| CN108987946B (en) * | 2018-07-30 | 2020-09-01 | 北京航空航天大学 | Slot array antenna based on substrate integrated waveguide and power distribution network thereof |
| CN210744177U (en) * | 2019-11-20 | 2020-06-12 | 成都瑞迪威科技有限公司 | Broadband millimeter wave phased array antenna |
| CN112748426B (en) * | 2020-12-25 | 2022-10-11 | 电子科技大学 | Monopulse sum-difference network for long-distance high-resolution radar system |
-
2021
- 2021-06-10 CN CN202110649484.2A patent/CN113471687B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207082637U (en) * | 2017-05-23 | 2018-03-09 | 中国人民解放军陆军工程大学 | Substrate integrated waveguide slot antenna based on high-order mode feed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113471687A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wu et al. | Ka-band near-field-focused 2-D steering antenna array with a focused Rotman lens | |
| US7724200B2 (en) | Antenna device, array antenna, multi-sector antenna, high-frequency wave transceiver | |
| CN107069230B (en) | Antenna structure and design method | |
| US11515638B2 (en) | Square aperture frequency selective surfaces in Fabry-Perot cavity antenna systems | |
| CN110649388A (en) | Low loss feed network and high efficiency antenna device | |
| CN108232439B (en) | Linear array antenna and planar array antenna of substrate integrated waveguide slot feed | |
| Chen et al. | Compact substrate integrated waveguide (SIW) monopulse network for $ Ku $-band tracking system applications | |
| CN114709628A (en) | W-band array antenna based on gap waveguide technology | |
| CN114243267A (en) | Ka-band broadband dual-circularly-polarized antenna unit and array based on ridge waveguide | |
| CN116247428B (en) | Millimeter wave array antenna | |
| RU2298268C1 (en) | Antenna | |
| CN113471687B (en) | Millimeter wave substrate integrated waveguide antenna | |
| US12113289B2 (en) | Dual-frequency and dual-polarization antenna array and electronic device | |
| CN114498011B (en) | High-performance microstrip array antenna | |
| Puskely et al. | Design of a compact wideband antenna array for microwave imaging applications | |
| Zhang et al. | Multibeam Rotman lens-fed patch antenna array using SISL technology for 24 GHz automotive radar | |
| WO2011059364A1 (en) | Planar antenna | |
| Khan et al. | Substrate integrated waveguide slot-fed grid array antenna | |
| Ullah et al. | Circularly polarized antenna array design with the potential of gain-size trade-off and omnidirectional radiation for millimeter-wave small base station applications | |
| Alekseitsev et al. | The modified dual-frequency dipole antenna | |
| Xu et al. | Low-Profile Patch Array Antenna with Stable Beam for 77 GHz Automotive Radar Applications | |
| Eid et al. | Solving the gain/coverage problem to enable 5G-powered IoT | |
| CN116581536B (en) | Antenna and electronic equipment | |
| CN220420906U (en) | C-band low-sidelobe sum-difference beam microstrip patch array antenna | |
| Chen et al. | A low sidelobe 77 GHz centre‐fed microstrip patch array 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 |