CN114069231A - Planar lens antenna - Google Patents
Planar lens antenna Download PDFInfo
- Publication number
- CN114069231A CN114069231A CN202111425200.8A CN202111425200A CN114069231A CN 114069231 A CN114069231 A CN 114069231A CN 202111425200 A CN202111425200 A CN 202111425200A CN 114069231 A CN114069231 A CN 114069231A
- Authority
- CN
- China
- Prior art keywords
- planar lens
- wave
- antenna
- substrate
- liquid crystal
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 53
- 238000010168 coupling process Methods 0.000 claims abstract description 53
- 238000005859 coupling reaction Methods 0.000 claims abstract description 53
- 230000007704 transition Effects 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 48
- 230000010287 polarization Effects 0.000 claims description 42
- 239000004973 liquid crystal related substance Substances 0.000 claims description 39
- 210000002858 crystal cell Anatomy 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 45
- 230000005855 radiation Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 239000011521 glass Substances 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000282994 Cervidae Species 0.000 description 1
- 241000533950 Leucojum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002356 single layer Substances 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
-
- 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
-
- 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
-
- 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
-
- 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
- H01Q3/30—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 varying the relative phase between the radiating elements of an array
- H01Q3/34—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 varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—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 varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a planar lens antenna, which comprises a planar lens structure and a spatial array feed structure; the planar lens structure comprises a top wave-transmitting structure, a bottom wave-transmitting structure and a phase-shifting structure, wherein the top wave-transmitting structure, the bottom wave-transmitting structure and the phase-shifting structure are in transition connection through coupling holes or microstrip lines; the space array feed structure is arranged below the bottom wave-transparent structure and provides feed for the bottom wave-transparent structure. The planar lens structure can be produced in large batch at low cost through a production line of the display panel, the space array feed structure flexibly adopts different feed forms according to different requirements, such as a horn array antenna, a microstrip array antenna and the like, the cost of the whole planar lens antenna is greatly reduced, the design and the use of the antenna are more flexible, the use environment is greatly expanded, the large-scale popularization and use are facilitated, and the planar lens structure has the characteristics of low production cost, low profile, flexible design and use, capability of carrying out electronic beam scanning and the like.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a planar lens antenna, and particularly relates to a planar lens antenna capable of performing electronic beam scanning.
Background
The traditional lens antenna is a three-dimensional structure antenna with simple feed structure, high efficiency and medium loading. Because the electromagnetic wave emitted by the feed source is spherical wave, the phase correction needs to be carried out through the combined structure of different media with different dielectric constants or the combined lens structure with different densities of the same medium, and the spherical wave is changed into plane wave, so as to achieve the purpose of improving the gain. The three-dimensional loaded lens structure is limited by processing technology, size and materials, so that the three-dimensional loaded lens structure cannot be flexibly applied, especially in a use environment with strict requirements on space size. In recent years, with the continuous development of scientific technology, the planar lens structure is gradually applied in a large range, and compared with a stereoscopic lens structure, the planar lens structure occupies a smaller space, is more flexible in design and is often lower in price. However, the planar lens structure still has the regret that the working bandwidth is narrow, and beam scanning cannot be carried out.
Conventional fixed beam pointing antennas can only point the beam in a fixed direction, such as a lens antenna. In an application scenario with beam scanning requirements, such as satellite communication in motion, radar and other application scenarios, the purpose of beam scanning can only be achieved through a mechanical servo turntable system or by replacing the mechanical servo turntable system with an electronically scanned phased array antenna, the former needs to add an additional set of complicated and heavy servo system, and the latter is often very expensive. Simple phased array antennas such as a horn array antenna with a servo system, a VICTS (variable inclination angle Continuous cross section Stub) antenna based on a parallel plate waveguide, a beam scanning plane antenna based on a rotating phase plane and the like have the problems of high profile, mechanical rotating structure and the like although the use cost is reduced to a certain extent, so that the use scene is limited, and the large-scale application is not facilitated.
The problems of narrow working bandwidth, incapability of electronic beam scanning and the like exist in the prior art, and a planar lens antenna for electronic beam scanning, which has the advantages of flexible working frequency band, low profile, low cost and easiness in integration, becomes necessary.
Disclosure of Invention
To this end, the present invention provides a planar lens antenna to solve at least one problem in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to the present invention, there is provided a planar lens antenna comprising a planar lens structure and a spatial array feed structure;
the planar lens structure comprises a top wave-transmitting structure, a bottom wave-transmitting structure and a phase-shifting structure, wherein the top wave-transmitting structure, the bottom wave-transmitting structure and the phase-shifting structure are in transition connection through coupling holes or microstrip lines;
the space array feed structure is arranged below the bottom wave-transparent structure and provides feed for the bottom wave-transparent structure.
Further, the top layer wave-transparent structure comprises a top layer and a supporting substrate, and the top layer is arranged on the upper surface of the supporting substrate.
Further, the bottom layer wave-transparent structure comprises a bottom layer and a bottom layer substrate, and the bottom layer is arranged on the lower surface of the bottom layer substrate.
Further, the phase shifting structure comprises a liquid crystal phase shifter, and the liquid crystal phase shifter is based on a branch variable capacitor structure and is in a single-stage branch form, a multi-stage branch form or a single multi-stage composite structure form.
Further, the phase shift structure further comprises a liquid crystal cell disposed between the support substrate and the bottom substrate.
Further, the coupling hole includes a first coupling slit and a second coupling slit, the first coupling slit and the second coupling slit are both disposed at a connection portion of the support substrate and the liquid crystal cell, and the first coupling slit and the second coupling slit are alternately disposed at intervals along a length direction of the support substrate.
Furthermore, the liquid crystal phase shifter comprises an opening pattern and a metal pattern of a variable capacitor, wherein the opening pattern and the metal pattern of the variable capacitor are arranged in the liquid crystal box, are respectively positioned on the inner surface of the upper substrate and the inner surface of the lower substrate of the liquid crystal box and are in one-to-one correspondence.
Further, the number of the planar lens structures is one or more, and when the number of the planar lens structures is more than one, the planar lens structures are in a laminated state.
Further, the top layer wave-transparent structure is in a patch form, a slit form or an array form, and the bottom layer wave-transparent structure is in a patch form, a slit form or an array form.
Further, the polarization mode of the top wave-transparent structure comprises orthogonal polarization, linear polarization and circular polarization.
The invention has the following advantages:
the planar lens antenna can perform electronic beam scanning through the top wave-transmitting structure, the bottom wave-transmitting structure and the phase-shifting structure which are sequentially arranged from top to bottom, and in addition, the planar lens structure can be produced in a large scale at low cost through a production line of a display panel, and the space array feed structure flexibly adopts different feed forms according to different requirements, such as a horn array antenna and a microstrip array antenna, so that the cost of the whole antenna is greatly reduced, the design and the use of the antenna are more flexible, the use environment is greatly expanded, the planar lens antenna is favorable for large-scale popularization and use, and the planar lens antenna has the characteristics of low production cost, low profile, flexible design and use, capability of performing electronic beam scanning and the like.
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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic structural diagram illustrating a planar lens antenna according to an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating a planar lens structure according to an exemplary embodiment;
FIG. 3 is a schematic diagram illustrating a cell structure of a planar lens according to an exemplary embodiment;
FIG. 4 is a schematic diagram of a liquid crystal phase shifter according to an exemplary embodiment;
FIG. 5 is a schematic diagram of a liquid crystal phase shifter according to another exemplary embodiment;
FIG. 6 is a schematic diagram of a liquid crystal phase shifter according to another exemplary embodiment;
FIG. 7 is a schematic diagram of a liquid crystal phase shifter according to another exemplary embodiment;
FIG. 8 is a schematic diagram of a liquid crystal phase shifter according to another exemplary embodiment;
FIG. 9 is a schematic diagram illustrating a planar lens antenna stack according to an exemplary embodiment;
fig. 10 is a schematic diagram illustrating a structure of an orthogonal dual-polarized planar lens structure according to an exemplary embodiment;
in the figure: 1. spatial array feed structure, 2, planar lens structure, 21, top layer, 22, support substrate, 23, first coupling slot, 24, liquid crystal phase shifter, 25, second coupling slot, 26, bottom substrate, 27, bottom layer, 28, liquid crystal cell, 31, top layer radiation patch, 32, top layer glass substrate, 33, third coupling slot, 34, variable capacitance liquid crystal phase shifter, 35, fourth coupling slot, 36, bottom layer glass substrate, 37, bottom layer radiation patch, 38, liquid crystal layer, 41, aperture pattern, 42, metal pattern of variable capacitor, 50, first spatial array feed structure, 51, first planar lens structure, 52, second planar lens structure, 53, third planar lens structure, 61, first top layer substrate, 62, first bottom substrate, 63, variable capacitance phase shifter structure, 64 first bottom layer radiation patch, 65, first vertically polarized coupling hole, 66. a first horizontally polarized coupling hole 67, a second vertically polarized coupling hole 68, a first top radiating patch 69, a second horizontally polarized coupling hole.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, there is provided a planar lens antenna, as shown in fig. 1 to 10, including a planar lens structure 2 and a spatial array feed structure 1;
the planar lens structure 2 comprises a top wave-transmitting structure, a bottom wave-transmitting structure and a phase-shifting structure, and the top wave-transmitting structure, the bottom wave-transmitting structure and the phase-shifting structure are in transition connection through coupling holes or microstrip lines;
the space array feed structure 1 is arranged below the bottom wave-transparent structure and provides feed for the bottom wave-transparent structure. The microstrip line may be a product in the prior art, and details thereof are not described here.
The quasi-plane wave emitted from the spatial array feed structure 1 passes through the planar lens structure 2 and then becomes the required plane wave with specific beam pointing.
The top wave-transparent structure is a top transmitting or receiving structure, and is a radiation structure for transmitting out the phase-shifted electromagnetic wave signals according to the use requirement or a structure for receiving the signals in the space into the liquid crystal phase shifter.
The bottom wave-transparent structure is a signal receiving or transmitting end close to the fixed beam antenna end or the feed end and is used for receiving signals of the fixed beam antenna end or the feed end into the liquid crystal phase shifter or transmitting signals in the liquid crystal phase shifter to the fixed beam antenna end or the feed end.
The top layer wave-transparent structure comprises a top layer 21 and a supporting substrate 22, wherein the top layer 21 is arranged on the upper surface of the supporting substrate 22.
The bottom wave-transparent structure comprises a bottom layer 27 and a bottom substrate 26, wherein the bottom layer 27 is arranged on the lower surface of the bottom substrate 26.
The phase shifting structure comprises a liquid crystal phase shifter 24, and the liquid crystal phase shifter 24 is based on a branch-node variable capacitance structure and is in the form of a single-stage branch node, a multi-stage branch node or a single multi-stage composite structure. The branch knot can be a linear branch knot, a curved branch knot, a broken line branch knot, or any shape branch knot with fractal characteristics such as a deer horn shape, a snowflake shape, a diamond shape, a ring shape, a grid shape and the like.
The phase shifting structure further includes a liquid crystal cell 28, the liquid crystal cell 28 being disposed between the support substrate 22 and the base substrate 26.
The coupling holes include a first coupling slit 23 and a second coupling slit 25, the first coupling slit 23 and the second coupling slit 25 are both disposed at a connection point of the support substrate 22 and the liquid crystal cell 28, and the first coupling slit 23 and the second coupling slit 25 are alternately disposed at intervals along a length direction of the support substrate 22. In fig. 2, the number of the first coupling slits 23 is four, the number of the second coupling slits 25 is four, and the first coupling slits 23 and the second coupling slits 25 may be the same or different.
The supporting substrate 22 and the bottom substrate 26 may be made of glass, PCB (Printed Circuit Board), plastic, or ceramic.
The liquid crystal phase shifter includes an opening pattern 41 and a metal pattern 42 of a variable capacitor, and both the opening pattern 41 and the metal pattern 42 of the variable capacitor are disposed inside the liquid crystal cell 28, and are respectively located on an inner surface of an upper substrate and an inner surface of a lower substrate of the liquid crystal cell 28, and are in one-to-one correspondence. The opening pattern 41 is located on the metal floor layer, and the metal pattern 42 of the variable capacitor is located on the routing layer corresponding to the metal floor layer.
The number of the planar lens structures is one or more, and when the number of the planar lens structures is more than one, the planar lens structures are in a laminated state. As shown in fig. 9, the planar lens antenna includes a first spatial array feeding structure 50, a first planar lens structure 51, a second planar lens structure 52 and a third planar lens structure 53, wherein the first planar lens structure 51, the second planar lens structure 52 and the third planar lens structure 53 are distributed in a stacked manner, and the first planar lens structure 51, the second planar lens structure 52 and the third planar lens structure 53 may be the same or different, and through this stacked structure, the amount of phase shift of the liquid crystal phase shifter in each layer can be reduced, and taking this schematic diagram as an example, the planar lens structure in each layer only needs to ensure that the phase shift range is greater than 120 degrees, so that the entire stacked layer can meet the requirement of phase shift of 360 degrees.
The top layer wave-transmitting structure is in a patch form, a slit form or an array form, and the bottom layer wave-transmitting structure is in a patch form, a slit form or an array form. The top wave-transparent structure and the bottom wave-transparent structure can also be any other structural forms which can well transmit electromagnetic signals. The film can be single-layer, multi-layer or multi-level planar extension. The polarization mode should be consistent with the polarization mode of the feed source.
The polarization mode of the top wave-transparent structure comprises orthogonal polarization, linear polarization and circular polarization.
The planar lens structure 2 is composed of a plurality of planar lens units, each planar lens unit comprises a top layer radiation patch 31, a top layer glass substrate 32, a third coupling gap 33, a variable capacitance liquid crystal phase shifter 34, a fourth coupling gap 35, a bottom layer glass substrate 36, a bottom layer radiation patch 37 and a liquid crystal layer 38, and the planar lens structure 2 is formed by periodically arranging a plurality of planar lens units. The third coupling slot 33 and the fourth coupling slot 35 may be the same or different.
The crossed dual-polarized planar lens structure comprises a first top substrate 61, a first bottom substrate 62, a variable capacitance phase shifter structure 63, a first bottom radiation patch 64, a first vertically polarized coupling hole 65, a first horizontally polarized coupling hole 66, a second vertically polarized coupling hole 67, a first top radiation patch 68 and a second horizontally polarized coupling hole 69, wherein the first top radiation patch 68 is arranged on the upper surface of the first top substrate 61, the first bottom radiation patch 64 is arranged on the lower surface of the first bottom substrate 62, and the variable capacitance phase shifter structure 63 is arranged between the first top substrate 61 and the first bottom substrate 62.
The first vertically polarized coupling hole 65 and the first horizontally polarized coupling hole 66 are provided between the first base substrate 62 and the lower surface of the variable capacitance phase shifter structure 63; the second vertically polarized coupling hole 67 and the second horizontally polarized coupling hole 69 are disposed between the first top substrate 61 and the upper surface of the variable capacitance phase shifter structure 63. The number of the variable capacitance phase shifter structures 63 is two, and the two variable capacitance phase shifter structures are arranged inside the liquid crystal box.
When the antenna is used as a transmitting antenna, vertically polarized electromagnetic waves reach the variable capacitance phase shifter structure 63 in the liquid crystal box from the first bottom-layer radiation patch 64 through the first vertically polarized coupling hole 65, are fed to the first top-layer radiation patch 68 through the second vertically polarized coupling hole 67 after being phase-shifted, and are radiated out; the horizontally polarized electromagnetic wave reaches the liquid crystal box from the first bottom layer radiation patch 64 through the first horizontally polarized coupling hole 66, is fed to the first top layer radiation patch 68 through the second horizontally polarized coupling hole 69 after being phase-shifted by the phase shifter, and is radiated out of the horizontally polarized wave. The two electromagnetic waves with different polarization directions can be beams with the same direction or beams with different directions, and the electromagnetic waves can also be used as receiving antennas. In addition, this structure can also be used as a transceiver. In addition, the first top radiating patch 68 may be cut or a 3dB bridge structure may be added between the phase shifter and the first top radiating patch 68 to make the orthogonal dual-polarized planar lens structure have a variable linear polarization function.
The space array feed structure 1 flexibly adopts different feed forms according to different requirements, such as a horn array antenna, a microstrip array antenna and the like, greatly reduces the cost of the whole planar lens antenna, enables the design and the use of the antenna to be more flexible, greatly expands the use environment, is beneficial to large-scale popularization and use, and has the characteristics of low production cost, low profile, flexible design and use, capability of carrying out electronic beam scanning and the like.
For the single-line polarized planar lens antenna, it is only required to ensure that the polarization mode of the top wave-transparent structure of the planar lens structure is consistent with the required polarization mode, and the polarization mode of the spatial array feed structure is consistent with the polarization mode of the bottom wave-transparent structure, which can be the same as or different from the polarization mode of the top wave-transparent structure, so as to achieve the purpose of good feed.
For a dual-linear polarization lens antenna, only two linear polarization modes of the top wave-transparent structure are required to be consistent with a required polarization mode. The double linear polarization of the space array feed structure is consistent with that of the bottom wave-transparent structure, can be the same as or different from that of the top wave-transparent structure, and achieves the purpose of good feed. The dual polarizations may be the same or different.
For a single circularly polarized antenna, it is only required to ensure that the polarization mode of the top-layer wave-transparent structure is consistent with the required polarization mode, and the polarization mode of the spatial array feed structure is consistent with the polarization mode of the bottom-layer wave-transparent structure, which can be a linear polarization structure or a circularly polarized structure. The circular polarization mode of the top-layer wave-transmitting structure can be a corner cut circular polarization patch with circular polarization characteristics, a circular polarization patch with a 90-degree 3dB coupler structure, or a circular polarization patch in other forms. The polarization form of the bottom wave-transparent structure depends on the specific feeding mode.
For a dual circularly polarized antenna, the space array feed structure is dual-linear polarized, and the polarization form of the bottom wave-transparent structure is the same as that of the space array feed structure. In the wave-transparent structure, a 3dB bridge structure is added between the phase shifter structure and the top wave-transparent structure, so that each phase shifter can independently control one path of circularly polarized electromagnetic waves, and the function of double-circularly polarized beam scanning is realized.
For the single-wire polarization tracking antenna, the space array feed structure can be single-wire polarized, when the space array feed structure is single-wire polarized, the polarization form of the bottom wave-transparent structure is consistent with that of the space array feed structure, the space array feed structure is also single-wire polarized, the top wave-transparent structure is double-circular polarization, the double-circular polarization is mainly realized by adding a 3dB bridge structure between a phase shifter end and a top radiation end, and the phase shifter end is connected with the bottom wave-transparent structure through a one-to-two power divider.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A planar lens antenna is characterized by comprising a planar lens structure and a spatial array feed structure;
the planar lens structure comprises a top wave-transmitting structure, a bottom wave-transmitting structure and a phase-shifting structure, wherein the top wave-transmitting structure, the bottom wave-transmitting structure and the phase-shifting structure are in transition connection through coupling holes or microstrip lines;
the space array feed structure is arranged below the bottom wave-transparent structure and provides feed for the bottom wave-transparent structure.
2. The planar lens antenna as recited in claim 1, wherein the top wave-transparent structure comprises a top layer and a supporting substrate, the top layer being disposed on an upper surface of the supporting substrate.
3. The planar lens antenna as recited in claim 2, wherein the bottom wave-transparent structure comprises a bottom layer and a bottom substrate, the bottom layer is disposed on a lower surface of the bottom substrate.
4. The planar lens antenna as claimed in claim 3, wherein the phase shifting structure comprises a liquid crystal phase shifter in the form of a single-stage branch structure, a multi-stage branch structure or a single multi-stage composite structure based on a branch-node variable capacitance structure.
5. The planar lens antenna as recited in claim 4, wherein the phase shifting structure further comprises a liquid crystal cell disposed between the support substrate and the base substrate.
6. The planar lens antenna as claimed in claim 5, wherein the coupling hole includes a first coupling slit and a second coupling slit, the first coupling slit and the second coupling slit are disposed at a connection point of the support substrate and the liquid crystal cell, and the first coupling slit and the second coupling slit are alternately disposed at intervals along a length direction of the support substrate.
7. The planar lens antenna as claimed in claim 4, wherein the liquid crystal phase shifter includes an opening pattern and a metal pattern of a variable capacitor, and the opening pattern and the metal pattern of the variable capacitor are disposed inside the liquid crystal cell and are respectively located on an inner surface of an upper substrate and an inner surface of a lower substrate of the liquid crystal cell in a one-to-one correspondence.
8. The planar lens antenna as claimed in claim 1, wherein the number of the planar lens structures is one or more, and when the number of the planar lens structures is more than one, the plurality of the planar lens structures are stacked.
9. The planar lens antenna as claimed in claim 1, wherein the top wave-transparent structure is in the form of a patch, a slot or an array, and the bottom wave-transparent structure is in the form of a patch, a slot or an array.
10. The planar lens antenna as claimed in claim 1, wherein the polarization modes of the top wave-transparent structure include orthogonal polarization, linear polarization and circular polarization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111425200.8A CN114069231A (en) | 2021-11-26 | 2021-11-26 | Planar lens antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111425200.8A CN114069231A (en) | 2021-11-26 | 2021-11-26 | Planar lens antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114069231A true CN114069231A (en) | 2022-02-18 |
Family
ID=80276670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111425200.8A Pending CN114069231A (en) | 2021-11-26 | 2021-11-26 | Planar lens antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114069231A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461929A (en) * | 2018-03-28 | 2018-08-28 | 珠海纳睿达科技有限公司 | Dual-polarized antenna array and dual polarization phased array antenna |
| CN108666738A (en) * | 2018-05-17 | 2018-10-16 | 京东方科技集团股份有限公司 | A kind of liquid crystal antenna and preparation method thereof, driving method and communication equipment |
| CN108767485A (en) * | 2018-05-28 | 2018-11-06 | 电子科技大学 | A kind of planar microstrip transmission array antenna |
| CN111293425A (en) * | 2020-03-24 | 2020-06-16 | 北京华镁钛科技有限公司 | Liquid crystal active phased array antenna |
| WO2020199238A1 (en) * | 2019-04-04 | 2020-10-08 | 信利半导体有限公司 | Liquid crystal phase shifter, liquid crystal antenna and manufacturing method for liquid crystal phase shifter |
| CN111786090A (en) * | 2020-07-06 | 2020-10-16 | 电子科技大学 | Planar broadband transmission array antenna based on liquid crystal adjustable material |
| CN113078469A (en) * | 2021-04-09 | 2021-07-06 | 东南大学 | Ku waveband double-frequency dual-polarized antenna for satellite communication |
-
2021
- 2021-11-26 CN CN202111425200.8A patent/CN114069231A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461929A (en) * | 2018-03-28 | 2018-08-28 | 珠海纳睿达科技有限公司 | Dual-polarized antenna array and dual polarization phased array antenna |
| CN108666738A (en) * | 2018-05-17 | 2018-10-16 | 京东方科技集团股份有限公司 | A kind of liquid crystal antenna and preparation method thereof, driving method and communication equipment |
| CN108767485A (en) * | 2018-05-28 | 2018-11-06 | 电子科技大学 | A kind of planar microstrip transmission array antenna |
| WO2020199238A1 (en) * | 2019-04-04 | 2020-10-08 | 信利半导体有限公司 | Liquid crystal phase shifter, liquid crystal antenna and manufacturing method for liquid crystal phase shifter |
| CN111293425A (en) * | 2020-03-24 | 2020-06-16 | 北京华镁钛科技有限公司 | Liquid crystal active phased array antenna |
| CN111786090A (en) * | 2020-07-06 | 2020-10-16 | 电子科技大学 | Planar broadband transmission array antenna based on liquid crystal adjustable material |
| CN113078469A (en) * | 2021-04-09 | 2021-07-06 | 东南大学 | Ku waveband double-frequency dual-polarized antenna for satellite communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109742556B (en) | Broadband circularly polarized millimeter wave multi-feed-source multi-beam lens antenna | |
| US6384787B1 (en) | Flat reflectarray antenna | |
| CN103187616B (en) | Circular polarized antenna | |
| CN106532274B (en) | Dual-frequency circularly polarized planar reflective array antenna based on split ring metamaterial unit | |
| CN107968267B (en) | Multi-beam end-fire antenna | |
| Li et al. | An FSS-backed reflection/transmission reconfigurable array antenna | |
| US7839349B1 (en) | Tunable substrate phase scanned reflector antenna | |
| CN112599983B (en) | Circularly polarized reflective array antenna and radiation unit | |
| CN113097736B (en) | Novel frequency and wave beam reconfigurable antenna | |
| Juneja et al. | Design considerations for implementation of planar antennas for millimeter wave (mmW) 5G network: a review | |
| Li et al. | Generating tunable orbital angular momentum radio beams with dual-circular-polarization and dual-mode characteristics | |
| CN110970740B (en) | Antenna system | |
| CN112636005B (en) | Circular polarization folding reflection array antenna of full integrated wide angle scanning | |
| CN113078461A (en) | Efficient reflection array antenna unit based on mirror symmetry method | |
| CN115084872B (en) | Ultra-wide bandwidth scanning angle tight coupling phased array antenna | |
| CN114069231A (en) | Planar lens antenna | |
| CN113937508A (en) | Planar lens structure based on liquid crystal phase shifter | |
| CN113241519B (en) | Integrated antenna system | |
| TW202013809A (en) | Antenna system | |
| CN115036684A (en) | Ka wave band two-dimensional wave beam scanning reflective array antenna based on liquid crystal | |
| Gorski et al. | Developments on phased array for low-cost, high frequency applications | |
| CN114498083A (en) | Antenna assembly | |
| US20230051826A1 (en) | Dual-frequency and dual-polarization antenna array and electronic device | |
| CN220628227U (en) | High-gain circularly polarized rod-shaped antenna structure | |
| JPH06125214A (en) | Planar 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220218 |