CN111180869A - Slot array antenna - Google Patents
Slot array antenna Download PDFInfo
- Publication number
- CN111180869A CN111180869A CN202010001496.XA CN202010001496A CN111180869A CN 111180869 A CN111180869 A CN 111180869A CN 202010001496 A CN202010001496 A CN 202010001496A CN 111180869 A CN111180869 A CN 111180869A
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- China
- Prior art keywords
- array antenna
- slot array
- radiating
- integrated waveguide
- substrate integrated
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/064—Two dimensional planar arrays using horn or slot aerials
Abstract
The invention discloses a slot array antenna, comprising: the CPW-based integrated waveguide structure comprises a conversion structure from the CPW to the substrate integrated waveguide, a substrate integrated waveguide feed structure and a radiation structure, wherein a gap in the radiation structure is in a diamond shape. The slot array antenna can meet the requirement of millimeter wave large bandwidth, and the processing complexity and the processing cost are not high.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a slot array antenna.
Background
In recent years, with the emergence of high-performance smart phones, tablet computers and notebook computers, in addition, with the rise of large data and cloud computing, the demand of human beings for information is continuously expanding, ultra-clear videos, 3D movies and televisions, VR (virtual reality) and the like need a large amount of data transmission, limited spectrum resources become more and more crowded, a high-bandwidth communication technology is needed for realizing high-speed information transmission, millimeter waves have the characteristic of high bandwidth relative to lower-frequency microwave communication, millimeter wave wireless communication is more and more emphasized by people, and communication systems are rapidly moving to millimeter wave frequency bands.
The antenna is an essential component of a wireless communication system, and can be used for realizing transmission or reception of electromagnetic wave energy. Slot antennas are one of the most common antenna forms and are widely used in various wireless communication systems.
The conventional single-layer structure slot array antenna has a narrow working bandwidth, and particularly, an antenna based on a high-order mode waveguide feed structure cannot meet the requirement of millimeter wave large bandwidth.
Therefore, it is necessary to provide a slot array antenna that can satisfy the requirement of a millimeter wave large bandwidth without increasing the complexity of processing and the processing cost.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a slot array antenna, which can meet the requirement of millimeter wave with a large bandwidth, and has low processing complexity and processing cost.
In view of the above object, the present invention provides a slot array antenna, including: the CPW-based integrated waveguide structure comprises a conversion structure from the CPW to the substrate integrated waveguide, a substrate integrated waveguide feed structure and a radiation structure, wherein a gap in the radiation structure is in a diamond shape.
Preferably, the radiating structure is composed of a plurality of radiating sub-arrays; wherein the content of the first and second substances,
the radiation subarray comprises two radiation units which are respectively arranged on two sides of the central line of the substrate integrated waveguide of the slot array antenna; wherein, a radiation unit comprises at least two gaps.
Preferably, two slits in the radiation unit are respectively arranged at two sides of the auxiliary center line;
the auxiliary central line is positioned between the central line of the substrate integrated waveguide and the metal through holes on the lateral row of the radiation subarray.
Preferably, an included angle θ between the central line of the gap and the auxiliary central line is between 0 ° and 45 °.
Preferably, the center points of adjacent slots in the radiating element are spaced one-half of the waveguide wavelength in a direction along the auxiliary center line.
Preferably, the antenna operates in a higher order mode.
Wherein the radiating structure comprises 2 radiating sub-arrays; or
The radiating structure comprises 4 radiating sub-arrays; or
The radiating structure comprises 8 radiating sub-arrays; or
The radiating structure comprises 16 radiating sub-arrays.
Preferably, the substrate integrated waveguide feed structure is a single layer.
The slot array antenna provided by the invention comprises: the CPW-to-Substrate Integrated Waveguide (SIW) switching structure comprises a CPW-to-SIW switching structure, a SIW feeding structure and a radiation structure, wherein a gap in the radiation structure is in a diamond shape. Because the slot of the slot array antenna in the prior art is usually a rectangular slot, the slot structure is changed into a diamond structure, so that a gradual change part is added to the slot structure relative to a waveguide short-circuit end, the working bandwidth of the antenna is expanded, and the requirement of millimeter wave large bandwidth can be met; the processing complexity and the processing cost cannot be increased by changing the shape of the processed gap; therefore, the requirement of millimeter wave large bandwidth can be met, and the processing complexity and the processing cost of the slot array antenna are not high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a top view of a slot array antenna according to an embodiment of the present invention;
fig. 2 is a schematic view of a radiation subarray structure of a radiation structure of a slot array antenna according to an embodiment of the present invention;
fig. 3 is a side view of a slot array antenna according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It is to be noted that technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The inventor of the present invention has analyzed the existing slot array antenna, and generally found that the slot array antenna includes: a transition structure from a CPW (Co-planar waveguide) to a substrate integrated waveguide, a substrate integrated waveguide feed structure, and a radiating structure; the substrate integrated waveguide feed structure is generally formed by processing an LTCC (Low Temperature Co-fired ceramic) substrate or a PCB (Printed Circuit Board) substrate, and the feed structure has two metal layers on a dielectric substrate, and forms a substrate integrated waveguide through a metalized via hole connecting the two metal layers; the substrate integrated waveguide realizes a field propagation mode of the waveguide on the dielectric substrate by utilizing the metal through hole, and further radiates outwards through a gap in the radiation structure to realize the field emission of the waveguide. Currently, the slots of existing slot array antennas are generally rectangular in shape; the inventors of the present invention have found that the shape of the slot of the antenna may affect the operating bandwidth of the antenna: by changing the rectangular slot in the slot array antenna in the prior art into a diamond structure, the slot structure is added with a gradual change part relative to the waveguide short-circuit end, so that the working bandwidth of the antenna can be expanded; experiments prove that the slot array antenna with the rhombic slots can meet the requirement of millimeter wave on large bandwidth; the processing complexity and the processing cost cannot be increased by changing the shape of the processed gap; therefore, the requirement of millimeter wave large bandwidth can be met, and the processing complexity and the processing cost of the slot array antenna are not high.
The technical solution of the embodiments of the present invention is described in detail below with reference to the accompanying drawings.
The slot array antenna provided by the invention has a structure shown in fig. 1, and comprises: a CPW to substrate integrated waveguide transition structure (not shown), a substrate integrated waveguide feed structure 102, and a radiating structure 103;
wherein the slits in the radiating structure 103 are rhombus shaped.
In particular, the radiating structure 103 may be composed of a plurality of radiating sub-arrays 111;
for example, the radiating structure 103 may include 2 radiating sub-arrays 111; or the radiating structure 103 may comprise 4, 8, or 16 radiating sub-arrays 111.
As shown in fig. 2, one radiation subarray 111 may include two radiation units 112 respectively arranged on two sides of a central line of a substrate integrated waveguide of the slot array antenna; one of the radiation units 112 includes at least two slits, for example, the radiation unit 112 may include 2, 3, 4, 5 or more slits.
The slits in the radiation unit 112 are respectively arranged at two sides of the auxiliary center line; the auxiliary central line is parallel to the central line of the substrate integrated waveguide and the metal through holes in the lateral row of the radiation subarray and is positioned between the central line of the substrate integrated waveguide and the metal through holes in the lateral row of the radiation subarray.
Wherein the included angle theta between the central line of the gap and the auxiliary central line is between 0 and 45 degrees; the working bandwidth of the slot array antenna can be changed by adjusting the included angle theta. For example, the angle θ between the center line of the slit and the auxiliary center line is 3 degrees.
For the rhombic gaps, the included angle of the vertex which is positioned on the central line of the gap is 0-45 degrees.
The center points of adjacent slots in the radiating element 112 are spaced one-half of the waveguide wavelength in the direction along the secondary centerline.
As shown in fig. 3, the substrate integrated waveguide feed structure 102 is a single-layer structure, and is made of an LTCC substrate or a PCB substrate, and includes: the metal-clad laminate comprises two metal layers, a dielectric layer between the two metal layers and a metal through hole for connecting the two metal layers.
As a preferred embodiment, the slot array antenna of the present invention operates in a higher-order mode, such as a higher-order mode of a transverse electric wave (TE 20).
The slot array antenna provided by the invention comprises: the CPW-to-Substrate Integrated Waveguide (SIW) switching structure comprises a CPW-to-SIW switching structure, a SIW feeding structure and a radiation structure, wherein a gap in the radiation structure is in a diamond shape. Because the slot of the slot array antenna in the prior art is usually a rectangular slot, the slot structure is changed into a diamond structure, so that a gradual change part is added to the slot structure relative to a waveguide short-circuit end, the working bandwidth of the antenna is expanded, and the requirement of millimeter wave large bandwidth can be met; the processing complexity and the processing cost cannot be increased by changing the shape of the processed gap; therefore, the requirement of millimeter wave large bandwidth can be met, and the processing complexity and the processing cost of the slot array antenna are not high.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
In addition, it will be apparent to one skilled in the art that the present invention may be practiced without, or with variation of, these specific details, for simplicity of illustration and discussion, and so as not to obscure the invention, with specific details set forth to describe the exemplary embodiments of the invention. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A slot array antenna, comprising: a structure for conversion of a CPW to a substrate integrated waveguide, a substrate integrated waveguide feed structure, and a radiating structure, characterized in that,
the gaps in the radiation structure are rhombus.
2. The slot array antenna of claim 1, wherein the radiating structure is comprised of a plurality of radiating sub-arrays; wherein the content of the first and second substances,
the radiation subarray comprises two radiation units which are respectively arranged on two sides of the central line of the substrate integrated waveguide of the slot array antenna; wherein, a radiation unit comprises at least two gaps.
3. The slot array antenna of claim 2,
the gaps in the radiation units are respectively arranged at two sides of the auxiliary central line;
the auxiliary central line is positioned between the central line of the substrate integrated waveguide and the metal through holes on the lateral row of the radiation subarray.
4. The slot array antenna of claim 3,
and the included angle theta between the central line of the gap and the auxiliary central line is between 0 and 45 degrees.
5. The slot array antenna of claim 4,
the center points of adjacent slots in the radiating element are spaced one-half of the waveguide wavelength in the direction along the auxiliary center line.
6. A slot array antenna according to any of claims 1-5, wherein the antenna operates in higher order mode.
7. The slot array antenna of any of claims 1-5, wherein the radiating structure comprises 2 radiating sub-arrays; or
The radiating structure comprises 4 radiating sub-arrays; or
The radiating structure comprises 8 radiating sub-arrays; or
The radiating structure comprises 16 radiating sub-arrays.
8. The slot array antenna of any of claims 1-5, wherein the substrate integrated waveguide feed structure is a single layer.
9. The slot array antenna of any of claims 1 to 5, wherein the substrate integrated waveguide feed structure is made of a LTCC substrate or a PCB substrate.
10. The slot array antenna of any of claims 1-5, wherein the substrate integrated waveguide feed structure comprises: the metal-clad laminate comprises two metal layers, a dielectric layer between the two metal layers and a metalized through hole for connecting the two metal layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001496.XA CN111180869A (en) | 2020-01-02 | 2020-01-02 | Slot array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001496.XA CN111180869A (en) | 2020-01-02 | 2020-01-02 | Slot array antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111180869A true CN111180869A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010001496.XA Pending CN111180869A (en) | 2020-01-02 | 2020-01-02 | Slot array antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086747A (en) * | 2020-09-04 | 2020-12-15 | 西北工业大学 | Inflatable high-power microwave array antenna |
Citations (4)
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|---|---|---|---|---|
| CN1700515A (en) * | 2005-05-30 | 2005-11-23 | 东南大学 | Balanced feed type broad-band chip integrated waveguide slot array antenna unit |
| CN102664311A (en) * | 2012-05-16 | 2012-09-12 | 中电科微波通信(上海)有限公司 | Crack wave guide antenna |
| CN204333279U (en) * | 2015-01-30 | 2015-05-13 | 中电科微波通信(上海)有限公司 | Crack twin-guide antenna |
| CN105261841A (en) * | 2015-09-16 | 2016-01-20 | 东南大学 | Quasi-surface plasmon-based leaky-wave antenna |
-
2020
- 2020-01-02 CN CN202010001496.XA patent/CN111180869A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700515A (en) * | 2005-05-30 | 2005-11-23 | 东南大学 | Balanced feed type broad-band chip integrated waveguide slot array antenna unit |
| CN102664311A (en) * | 2012-05-16 | 2012-09-12 | 中电科微波通信(上海)有限公司 | Crack wave guide antenna |
| CN204333279U (en) * | 2015-01-30 | 2015-05-13 | 中电科微波通信(上海)有限公司 | Crack twin-guide antenna |
| CN105261841A (en) * | 2015-09-16 | 2016-01-20 | 东南大学 | Quasi-surface plasmon-based leaky-wave antenna |
Non-Patent Citations (2)
| Title |
|---|
| 张林: "K波段基片集成波导缝隙阵列天线设计", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
| 赵怀成: "波导缝隙天线阵列及功率合成波导透镜天线的研究", 《中国博士学位论文全文数据库（电子期刊）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086747A (en) * | 2020-09-04 | 2020-12-15 | 西北工业大学 | Inflatable high-power microwave array antenna |
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Application publication date: 20200519 |