CN114498015B - Beam-adjustable circularly polarized patch array antenna and beam regulation and control method - Google Patents
Beam-adjustable circularly polarized patch array antenna and beam regulation and control method Download PDFInfo
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- CN114498015B CN114498015B CN202210143008.8A CN202210143008A CN114498015B CN 114498015 B CN114498015 B CN 114498015B CN 202210143008 A CN202210143008 A CN 202210143008A CN 114498015 B CN114498015 B CN 114498015B
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 11
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- 229910052751 metal Inorganic materials 0.000 claims description 70
- 239000002184 metal Substances 0.000 claims description 70
- 239000010410 layer Substances 0.000 claims description 20
- 239000011229 interlayer Substances 0.000 claims description 10
- 230000010287 polarization Effects 0.000 abstract description 32
- 230000001276 controlling effect Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 238000010295 mobile communication Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
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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
- H01Q21/065—Patch antenna array
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- 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
- H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
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- Waveguide Aerials (AREA)
Abstract
The invention relates to the field of mobile communication, in particular to a beam-adjustable circularly polarized patch array antenna and a beam regulation and control method. The beam-adjustable circularly polarized patch array antenna comprises an upper dielectric substrate, wherein the upper dielectric substrate comprises a plurality of circularly polarized antenna units which are arranged in an array manner; the middle-layer dielectric substrate is arranged on one side, away from the circularly polarized antenna unit, of the upper-layer dielectric substrate, and a substrate integrated waveguide structure is formed on the middle-layer dielectric substrate; the lower layer dielectric substrate is arranged on one side, away from the upper layer dielectric substrate, of the middle layer dielectric substrate, and a bias circuit is formed on the lower layer dielectric substrate and used for controlling the radiation state of the circularly polarized antenna unit. The beam-adjustable circularly polarized patch array antenna provided by the invention can realize the circular polarization performance of the array antenna, and meanwhile, the beam direction can be regulated and controlled, so that the overall structure is very compact and easy to realize.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to a beam-adjustable circularly polarized patch array antenna and a beam regulation and control method.
Background
In recent years, substrate integrated waveguides (Substrate Integrated Waveguide, SIW) are widely used in planar passive device design and slot array antenna design due to their characteristics of good propagation characteristics, high quality factor, low radiation loss, etc., and have been greatly improved in terms of process and structural size and weight compared with conventional metal waveguides, and because PCB multilayer board manufacturing processes have become mature, the processing difficulty and processing cost of SIW have been greatly reduced, and advantages have been created for large-scale application of SIW.
The circularly polarized antenna can receive electromagnetic wave signals with any linear polarization, and the radiation wave can be received by any polarized antenna, so that the circularly polarized antenna has the characteristics of no need of strict polarization matching relative to the linearly polarized antenna in a receiving and transmitting system, and the like, and is widely applied to satellite communication. In the current increasingly complex environment, more reflection and scattering are generated on electromagnetic signals under different boundaries, so that multipath effects are formed, the signals are seriously distorted, the processing difficulty of the signals is increased, the circular polarized antenna has high-value polarization isolation due to the orthogonality of the rotation directions, the electromagnetic waves with different rotation directions cannot receive electromagnetic wave signals with opposite rotation directions, and the circular polarized antenna has good anti-interference capability. But there is currently much research in achieving a wider axial ratio bandwidth and no attention is paid to the control of the array antenna beam.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a beam-adjustable circularly polarized patch array antenna and a beam regulation method, which aim to overcome the defects in the prior art.
To achieve the above object, a first aspect of the present invention provides a beam tunable circularly polarized patch array antenna, comprising: the antenna comprises an upper medium substrate, a lower medium substrate and a plurality of antenna units, wherein the upper medium substrate comprises a plurality of circularly polarized antenna units which are arranged in an array manner; the middle-layer dielectric substrate is arranged on one side, away from the circularly polarized antenna unit, of the upper-layer dielectric substrate, and a substrate integrated waveguide structure is formed on the middle-layer dielectric substrate; the lower layer dielectric substrate is arranged on one side, away from the upper layer dielectric substrate, of the middle layer dielectric substrate, and a bias circuit is formed on the lower layer dielectric substrate and used for controlling the radiation state of the circularly polarized antenna unit. The invention feeds the circularly polarized antenna unit in the substrate integrated waveguide, thereby realizing the circular polarization of the antenna, and introduces a regulation and control mode, so that the beam direction of the antenna can be regulated and controlled while the circular polarization is realized, and the whole antenna has very compact size and is easy to integrate.
Optionally, the cross section of the circularly polarized antenna unit has a rectangular shape with two cut corners, and the two cut corners are located on the diagonal of the rectangle. The circularly polarized antenna unit has a simple structure and is easy to be practically produced and applied.
Optionally, the circularly polarized antenna units further include a first through hole, and the first through holes are located at the center of the circularly polarized antenna units. The circularly polarized antenna unit can be connected with the bias circuit through the first through hole.
Optionally, the interlayer dielectric substrate includes: the first metal plate is provided with a second through hole and a rectangular gap, part of the second through hole is communicated with the first through hole, part of the second through hole is positioned at the edge of the first metal plate, and the rectangular gap is arranged on the first metal plate in an array manner and partially coincides with part of the second through hole in the middle area; the second metal plate is provided with a third through hole, and the third through hole is communicated with the second through hole. The first metal plate and the second metal plate of the intermediate layer dielectric substrate and the second through holes penetrating through the edge area form a substrate integrated waveguide structure, and the intermediate layer dielectric substrate is periodically placed at intervals by a plurality of rectangular gaps which are perpendicular to the central axis of the substrate integrated waveguide structure, wherein the axial ratio, the return loss and the insertion loss of the beam adjustable circular polarization patch array antenna can be influenced by adjusting the positions, the lengths and the widths of the rectangular gaps.
Optionally, the interlayer dielectric substrate further includes: the metal strips are symmetrically arranged at the edge of the first metal plate, and part of the second through holes are distributed on the metal strips. The invention is mainly used for facilitating grounding by arranging the metal strip on the interlayer substrate.
Optionally, the lower dielectric substrate includes: the fourth through hole is communicated with part of the third through holes; the third metal plate and the fourth metal plate are respectively arranged at two ends of the lower dielectric substrate and are positioned at one side of the lower dielectric substrate far away from the middle dielectric substrate. According to the invention, the third metal plate and the fourth metal plate are arranged on the bottom surface of the lower dielectric substrate, so that the grounding area can be increased, and the grounding effect is further ensured.
Optionally, the bias circuit includes: and the direct current bias lines are respectively and electrically connected with the circularly polarized antenna units. The anti-interference structure is electrically connected with the direct current bias line, and the cross section of the anti-interference structure is fan-shaped. The structure of the invention can effectively improve the anti-interference capability of the wave beam adjustable circular polarization patch array antenna.
Optionally, the beam tunable circularly polarized patch array antenna further includes: the grounding hole penetrates through the upper-layer dielectric substrate; the grounding metal sheets are electrically connected with the grounding holes and are respectively arranged around the circularly polarized antenna units. The invention adopts the structure that the grounding hole is matched with the grounding metal sheet, and has the advantage of high integration level.
Optionally, the beam tunable circularly polarized patch array antenna further includes: and one end of the control switch is electrically connected with the circularly polarized antenna unit, and the other end of the control switch is electrically connected with the grounding metal sheet. The invention controls the state of the control switch through the bias circuit, thereby changing the radiation state of the circularly polarized antenna unit and realizing the regulation and control of the antenna beam.
The second aspect of the present invention also provides a beam adjusting method, including the steps of: providing a beam tunable circularly polarized patch array antenna as described in the first aspect of the invention; the state of the control switch is controlled through the bias circuit, so that the radiation state of the circularly polarized antenna unit is changed, and the regulation and control of the antenna beam are realized.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an antenna according to the present invention;
FIG. 2 is a top view of an upper dielectric substrate of the present invention;
FIG. 3 is a bottom view of an upper dielectric substrate of the present invention;
FIG. 4 is a top view of an interlayer dielectric substrate of the present invention;
FIG. 5 is a bottom view of an interlayer dielectric substrate of the present invention;
FIG. 6 is a top view of an underlying dielectric substrate of the present invention;
FIG. 7 is a bottom view of an underlying dielectric substrate of the present invention;
fig. 8 is a schematic diagram of a circularly polarized antenna element loading bias circuit and sector structure;
FIG. 9 is a schematic diagram of a circularly polarized cell loading Pin switch diode;
FIG. 10 is a diagram of simulated beam pointing changes for different sequences in accordance with an embodiment of the present invention;
FIG. 11 is a graph showing simulated return loss versus frequency for different sequences in accordance with an embodiment of the present invention;
FIG. 12 is a graph of simulated insertion loss versus frequency for different sequences in accordance with an embodiment of the present invention;
FIG. 13 is a graph showing simulated axial ratio over frequency for an azimuth plane in the "10101010" state in accordance with an embodiment of the present invention;
FIG. 14 is a graph of simulated axial ratio over frequency for an azimuth plane in the "10010101" state in accordance with an embodiment of the present invention;
fig. 15 is a graph showing simulated axial ratio over frequency on the azimuth plane in the "10010010" state according to an embodiment of the present invention;
Fig. 16 is a flowchart of an embodiment of a beam steering method of the present invention.
Detailed Description
Specific embodiments of the invention will be described in detail below, it being noted that the embodiments described herein are for illustration only and are not intended to limit the invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the invention. In other instances, well-known circuits, software, or methods have not been described in detail in order not to obscure the invention.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment," "in an embodiment," "one example," or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale.
Referring to fig. 1 to 3, an embodiment of the present invention provides a beam-tunable circularly polarized patch array antenna, where the entire beam-tunable circularly polarized patch array antenna may be rectangular and is stacked from top to bottom by an upper dielectric substrate 1, an intermediate dielectric substrate 2 and a lower dielectric substrate 3; in this embodiment, the upper dielectric substrate 1, the middle dielectric substrate 2 and the lower dielectric substrate 3 may be Rogers4350B plates, which have a relative dielectric constant of 3.66 and a thickness of 0.508mm, and may be laminated with the upper dielectric substrate 1, the middle dielectric substrate 2 and the lower dielectric substrate 3 to obtain the beam-adjustable circularly polarized patch array antenna. In a further embodiment, the dimensions and shape of the upper dielectric substrate 1, the middle dielectric substrate 2 and the lower dielectric substrate 3 may also be different. In an alternative embodiment, the thicknesses and relative dielectric constants of the upper dielectric substrate 1, the intermediate dielectric substrate 2, and the lower dielectric substrate 3 may also be different.
In this embodiment, the upper dielectric substrate 1 includes a plurality of circularly polarized antenna units 4 arranged in an array; the circularly polarized antenna units 4 may be disposed at equal intervals, and further, the distance between the circularly polarized antenna units 4 may be selected according to actual needs, which is not illustrated herein. In another embodiment, the circularly polarized antenna elements 4 may be arranged at unequal intervals.
In an alternative embodiment, the cross-section of the circularly polarized antenna element 4 has a rectangular shape with two cut corners, the two cut corners being located on the diagonal of the rectangle, the cross-section of the cut corners having a triangular shape. The material of each circularly polarized antenna element 4 may be metal. The circularly polarized antenna unit has a simple structure and is easy to be practically produced and applied.
In an alternative embodiment, the circularly polarized antenna unit 4 further includes a first through hole 8, where the first through hole 8 may be a cylindrical through hole, the first through holes 8 are located at the center of the circularly polarized antenna unit 4, and the first through holes 8 further penetrate the upper dielectric substrate 1. The circularly polarized antenna element 4 can be connected to a bias circuit via said first via 8.
Referring to fig. 4 to 5, in this embodiment, the intermediate dielectric substrate 2 is disposed on a side of the upper dielectric substrate 1 facing away from the circularly polarized antenna unit 4, and a substrate integrated waveguide structure is formed on the intermediate dielectric substrate 2; the lower dielectric substrate 3 is disposed on a side of the middle dielectric substrate 2 away from the upper dielectric substrate 1, and a bias circuit is formed on the lower dielectric substrate 3, and the bias circuit is used for controlling the radiation state of the circularly polarized antenna unit 4.
In an alternative embodiment, the interlayer dielectric substrate 2 includes: a first metal plate 9, wherein the first metal plate 9 is provided with a second through hole and a rectangular gap 14, a part of the second through hole 16 in the middle area is communicated with the first through hole 8, a part of the second through hole 13 is positioned at the edge of the first metal plate 9, and the rectangular gap 14 is arranged on the first metal plate 9 in an array manner and partially coincides with a part of the second through hole (circular gap) 15 in the middle area; the second metal plate 10, the second metal plate 10 is provided with a third through hole, and the third through hole is communicated with the second through hole.
Referring back to fig. 5, the third through holes include a third through hole located in the middle area of the second metal plate 10 and a third through hole located in the edge area of the second metal plate 10, where the through holes correspond to and are in communication with the second through holes on the first metal plate 9. Wherein the first metal plate 9 and the second metal plate 10 may be made of the same material, and in another embodiment, the first metal plate 9 and the second metal plate 10 may be made of different materials; further, the first metal plate 9 and the second metal plate 10 may be made of one or more of titanium, nickel, or other metals and alloys.
The first metal plate 9, the second metal plate 10 and the second through holes penetrating through the edge area of the intermediate layer dielectric substrate 2 together form a substrate integrated waveguide structure, the invention is arranged periodically at intervals of a plurality of rectangular gaps 14 which are perpendicular to the central axis of the substrate integrated waveguide structure, and the axial ratio, the return loss and the insertion loss of the beam adjustable circular polarization patch array antenna can be influenced by adjusting the positions, the lengths and the widths of the rectangular gaps 14.
In an alternative embodiment, the interlayer dielectric substrate 2 further includes metal strips 18, where the metal strips 18 are symmetrically disposed at edges of the first metal plate 9, and a portion of the second through holes 19 are distributed on the metal strips 18. Further, the metal strips 18 specifically include 4 metal strips 18, and are respectively distributed on two opposite sides of the first metal plate 9. The present invention is primarily directed to facilitating grounding by providing metal strips 18 on the interlayer substrate.
Referring to fig. 6 to 7, in an alternative embodiment, the lower dielectric substrate 3 includes: the fourth through holes are communicated with part of the third through holes, wherein the fourth through holes comprise a fourth through hole positioned in the central area of the lower medium substrate 3 and a fourth through hole positioned at the edge of the lower medium substrate 3; the lower dielectric substrate 3 further comprises a third metal plate 20 and a fourth metal plate, and the third metal plate 20 and the fourth metal plate are respectively arranged at two ends of the lower dielectric substrate 3 and are located at one side, far away from the middle dielectric substrate 2, of the lower dielectric substrate 3. In one embodiment, the third metal plate 20 and the fourth metal plate are both rectangular metal plates, and their orthographic projections on the underlying dielectric substrate 3 at least partially coincide with the underlying dielectric substrate 3. The invention can increase the grounding area by arranging the third metal plate 20 and the fourth metal plate on the bottom surface of the lower dielectric substrate 3, thereby further ensuring the grounding effect.
Referring to fig. 8, in an alternative embodiment, the bias circuit includes a dc bias line 16, and the dc bias line 16 is electrically connected to the circularly polarized antenna element 4. The bias circuit further comprises an anti-interference structure 17, the anti-interference structure 17 is electrically connected with the direct current bias line 16, and the cross section of the anti-interference structure 17 is fan-shaped. In the present application, other designs of bias circuits can refer to the prior art, and are not described in the present document because they are not the core application points of the present application; the structure of the application can effectively improve the anti-interference capability of the wave beam adjustable circular polarization patch array antenna.
In an alternative embodiment, the beam tunable circularly polarized patch array antenna further comprises: a grounding hole 6, wherein the grounding hole 6 penetrates through the upper dielectric substrate 1; and the grounding metal sheets 5 are electrically connected with the grounding holes 6, and the grounding metal sheets 5 surround the circularly polarized antenna unit 4, and in the embodiment, the number of the grounding metal sheets 5 is 4. The invention has the advantage of easy realization by adopting the structure of the grounding hole 6 and the grounding metal sheet 5.
In an alternative embodiment, the beam tunable circularly polarized patch array antenna further comprises: and one end of the control switch 7 is electrically connected with the circularly polarized antenna unit 4, and the other end of the control switch 7 is electrically connected with the grounding metal sheet 5. The invention controls the radiation state of the circularly polarized antenna unit 4 by utilizing the control switch 7, thereby realizing the regulation and control of the antenna beam.
Referring to fig. 9, in an alternative embodiment, the control switch 7 may include, but is not limited to, pin switch diodes, each of the circularly polarized antenna units 4 may be controlled by 4 Pin switch diodes, and the connection manner may be specifically referred to the drawing, and it can be seen from the drawing that the 4 Pin switch diodes are respectively located on 4 sides of the circularly polarized antenna unit 4.
In an alternative embodiment, the beam tunable circularly polarized patch array antenna may further include an SMA connector 11 and a microstrip line matching structure 12, where the SMA connector 11 is connected to the substrate integrated waveguide structure on the intermediate layer dielectric substrate 2 through the microstrip line matching structure 12, and the antenna array formed by the circularly polarized antenna units 4 may be fed through the SMA connector 11; in addition, the beam-adjustable circularly polarized patch array antenna can also realize the transmission of electric signals by utilizing microstrip lines.
In practical application, the working states of different circular polarization units in the beam adjustable circular polarization patch array antenna are changed by controlling the on and off states of the Pin switch diode in the access circuit, so that the beam of the beam adjustable circular polarization patch array antenna points. For the loading Pin switch diode circular polarization unit shown in fig. 9, each circular polarization unit loads 4 Pin switch diodes, when the 4 Pin switch diodes are in an off state, the circular polarization unit normally works, and is marked as a "1" state, namely, the circular polarization unit is in an on state, and when the 4 Pin switch diodes are in an on state, the circular polarization unit is grounded in a non-resonant state, the circular polarization unit basically does not radiate, and is marked as a "0" state, namely, the circular polarization unit is in an off state.
Fig. 10 shows the beam of the beam adjustable circular polarization patch array antenna of the present invention at the frequency of 14.81GHz corresponding to the array antenna under different Pin switch diode loading modes, and it can be seen that the beam direction of the beam adjustable circular polarization patch array antenna of the present invention also changes under different sequence conditions, from-10 ° direction under the "10101010" state to +6° direction under the "10010101" state to +22° direction under the "10010010" state, so that the beam adjustable circular polarization patch array antenna of the present invention has the function of beam adjustment. Fig. 11-12 are graphs showing simulated return loss and insertion loss along with frequency of the beam-tunable circularly polarized patch array antenna according to the present invention in different Pin switch diode loading modes of the circularly polarized unit, and it can be seen that the beam-tunable circularly polarized patch array antenna according to the present invention has small S parameter variation under different sequence loading conditions, and the antenna can still work normally under different sequence conditions. Fig. 13-15 are graphs showing the change of the simulated axial ratio along with the frequency on different azimuth planes of the beam-tunable circular polarization patch array antenna in the present invention in the "10101010" state and the "10010101" state and the "10010010" state under the different Pin-switched diode loading modes of the circular polarization unit, so that it can be seen that the beam-tunable circular polarization patch array antenna in the present invention still maintains good circular polarization characteristics at the frequency of 14.81GHz during the beam scanning in the different Pin-switched diode loading modes, and the axial ratio of the entire array antenna is not deteriorated due to the change of the beam direction. Therefore, the beam-adjustable circularly polarized patch array antenna can realize the circular polarization performance of the array antenna, and the beam direction can be regulated and controlled, so that the overall structure is very compact and easy to realize.
Referring to fig. 16, still another embodiment of the present invention further provides a beam steering method, which includes the following steps:
S1, providing a beam-adjustable circularly polarized patch array antenna;
s2, controlling the state of the control switch through the bias circuit, so that the radiation state of the circularly polarized antenna unit is changed, and the regulation and control of the antenna beam are realized.
The specific structure and the function of the beam-tunable circular polarization patch array antenna may refer to the related embodiments of the beam-tunable circular polarization patch array antenna according to the present invention, and will not be described herein for brevity; in addition, reference is also made to the foregoing for specific steps in antenna beam steering.
The invention has the beneficial effects that: the invention feeds the circularly polarized antenna unit in the substrate integrated waveguide, thereby realizing the circular polarization of the antenna, and introduces a regulation and control mode, so that the beam direction of the antenna can be regulated and controlled while the circular polarization is realized, and the whole antenna has very compact size and is easy to integrate.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (8)
1. A beam tunable circularly polarized patch array antenna comprising:
the antenna comprises an upper medium substrate, a lower medium substrate and a plurality of antenna units, wherein the upper medium substrate comprises a plurality of circularly polarized antenna units which are arranged in an array manner;
The middle-layer dielectric substrate is arranged on one side, away from the circularly polarized antenna unit, of the upper-layer dielectric substrate, and a substrate integrated waveguide structure is formed on the middle-layer dielectric substrate;
the lower layer dielectric substrate is arranged on one side, away from the upper layer dielectric substrate, of the middle layer dielectric substrate, and a bias circuit is formed on the lower layer dielectric substrate and is used for controlling the radiation state of the circularly polarized antenna unit;
the grounding hole penetrates through the upper-layer dielectric substrate;
the grounding metal sheets are electrically connected with the grounding holes and are respectively arranged around the circularly polarized antenna units;
One end of the control switch is electrically connected with the circularly polarized antenna unit, and the other end of the control switch is electrically connected with the grounding metal sheet;
the state of the control switch is controlled through the bias circuit, so that the radiation state of the circularly polarized antenna unit is changed, and the regulation and control of the antenna beam are realized.
2. The beam-tunable circularly polarized patch array antenna of claim 1, wherein:
the cross section of the circularly polarized antenna unit is rectangular with two cut angles, and the two cut angles are positioned on the diagonal line of the rectangle.
3. The beam-tunable circularly polarized patch array antenna of claim 1, wherein:
the circularly polarized antenna units respectively further comprise a first through hole, and the first through holes are positioned in the center of the circularly polarized antenna units.
4. The beam tunable circularly polarized patch array antenna of claim 3, wherein the interlayer dielectric substrate comprises:
The first metal plate is provided with a second through hole and a rectangular gap, part of the second through hole is communicated with the first through hole, part of the second through hole is positioned at the edge of the first metal plate, and the rectangular gap is arranged on the first metal plate in an array manner and partially coincides with part of the second through hole in the middle area;
the second metal plate is provided with a third through hole, and the third through hole is communicated with the second through hole.
5. The beam tunable circularly polarized patch array antenna of claim 4, wherein the interlayer dielectric substrate further comprises:
the metal strips are symmetrically arranged at the edge of the first metal plate, and part of the second through holes are distributed on the metal strips.
6. The beam tunable circularly polarized patch array antenna of claim 4, wherein the lower dielectric substrate comprises:
the fourth through hole is communicated with part of the third through holes;
The third metal plate and the fourth metal plate are respectively arranged at two ends of the lower dielectric substrate and are positioned at one side of the lower dielectric substrate far away from the middle dielectric substrate.
7. The beam tunable circularly polarized patch array antenna of any one of claims 1-6, wherein the bias circuit comprises:
the direct-current bias line is electrically connected with the circularly polarized antenna unit;
the anti-interference structure is electrically connected with the direct current bias line, and the cross section of the anti-interference structure is fan-shaped.
8. The beam regulation and control method is characterized by comprising the following steps:
Providing a beam tunable circularly polarized patch array antenna as claimed in claim 7;
the state of the control switch is controlled through the bias circuit, so that the radiation state of the circularly polarized antenna unit is changed, and the regulation and control of the antenna beam are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143008.8A CN114498015B (en) | 2022-02-16 | 2022-02-16 | Beam-adjustable circularly polarized patch array antenna and beam regulation and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143008.8A CN114498015B (en) | 2022-02-16 | 2022-02-16 | Beam-adjustable circularly polarized patch array antenna and beam regulation and control method |
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| Publication Number | Publication Date |
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| CN114498015A CN114498015A (en) | 2022-05-13 |
| CN114498015B true CN114498015B (en) | 2024-05-31 |
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| KR101381863B1 (en) * | 2013-04-02 | 2014-04-04 | 삼성탈레스 주식회사 | Multi-polarized microstrip patch array antenna |
| CN111106451A (en) * | 2019-12-23 | 2020-05-05 | 北京交通大学 | One-dimensional electrically-controlled beam scanning circularly polarized antenna and control method thereof |
| CN113013622A (en) * | 2021-02-22 | 2021-06-22 | 深圳市环波科技有限责任公司 | Wave beam adjustable circular polarization array antenna based on substrate integrated waveguide |
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| US7952525B2 (en) * | 2005-06-03 | 2011-05-31 | Sony Corporation | Antenna device associated wireless communication apparatus and associated control methodology for multi-input and multi-output communication systems |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101381863B1 (en) * | 2013-04-02 | 2014-04-04 | 삼성탈레스 주식회사 | Multi-polarized microstrip patch array antenna |
| CN111106451A (en) * | 2019-12-23 | 2020-05-05 | 北京交通大学 | One-dimensional electrically-controlled beam scanning circularly polarized antenna and control method thereof |
| CN113013622A (en) * | 2021-02-22 | 2021-06-22 | 深圳市环波科技有限责任公司 | Wave beam adjustable circular polarization array antenna based on substrate integrated waveguide |
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