CN112151958A - Plane end-fire circularly polarized antenna - Google Patents
Plane end-fire circularly polarized antenna Download PDFInfo
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- CN112151958A CN112151958A CN202011026558.9A CN202011026558A CN112151958A CN 112151958 A CN112151958 A CN 112151958A CN 202011026558 A CN202011026558 A CN 202011026558A CN 112151958 A CN112151958 A CN 112151958A
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- 230000010287 polarization Effects 0.000 claims abstract description 93
- 239000000758 substrate Substances 0.000 claims description 43
- 239000000523 sample Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000013461 design Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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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
- 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
- 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
- H01Q3/28—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 amplitude
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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
- 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
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Abstract
The invention discloses a planar end-fire circularly polarized antenna which is characterized by comprising an end-fire horizontal polarization layer, an end-fire vertical polarization layer and a micro-strip power divider, wherein the end-fire horizontal polarization layer is arranged on the end-fire vertical polarization layer; the end-fire horizontal polarization layer and the end-fire vertical polarization layer are fed by the microstrip power divider. Through the structural design of the antenna, the planar end-fire circularly polarized antenna is provided, and the requirements of miniaturization and low paraboloid are met.
Description
Technical Field
The invention relates to the field of antennas, in particular to a planar end-fire circularly polarized antenna.
Background
The performance of the antenna as an important transceiver device directly determines the performance of the whole wireless communication system. Although the linear polarization antenna is still used by most wireless communication systems at present, the circularly polarized antenna has the advantages of multipath reflection resistance and the like, so that the circularly polarized antenna replaces the linear polarization antenna in the scenes of military communication, satellite navigation, satellite communication and the like. The circular polarization technology must be applied to more wireless communication application scenes in the future, which makes the circular polarization antenna a current research hotspot.
The method for realizing circular polarization is to generate linear polarization components which are equal in amplitude, 90-degree in phase difference and orthogonal in space, and can be applied to a single feed method, a multi-element method, a traveling wave method and the like to realize circular polarization. Currently, common circular polarization antennas include a horn antenna, a helical antenna, a dipole antenna, a patch antenna, and the like. Compared with a horn antenna, a spiral antenna and a vibrator antenna, the patch antenna has the advantages of low section, easiness in processing, low cost and the like. However, most of patch antennas radiate normally, and the edge-emitting characteristic of the patch antennas is difficult to meet the requirements of many scenes. For application scenes such as handheld equipment, vehicles, aircrafts, satellites and the like, an end-fire circularly polarized antenna with a low profile and compactness is often needed, and most of the existing end-fire circularly polarized antennas are difficult to meet the requirements of miniaturization and low profile.
Disclosure of Invention
The invention aims to solve the technical problem of end-fire circular polarization size and provides a planar end-fire circular polarization antenna which meets the requirements of miniaturization and low polished surface.
The invention is realized by the following technical scheme:
a planar end-fire circularly polarized antenna is characterized by comprising an end-fire horizontal polarization layer, an end-fire vertical polarization layer and a microstrip power divider; the microstrip power divider feeds power to the end-fire horizontal polarization layer and the end-fire vertical polarization layer.
In the scheme, the plane end-fire circular polarization antenna has a double-layer structure, the first layer structure generates end-fire horizontal polarization, the second layer structure generates end-fire vertical polarization, the double-layer structure feeds power through the microstrip power divider, the amplitude and the phase of the horizontal polarization generated by the end-fire horizontal polarization layer and the amplitude and the phase of the vertical polarization generated by the end-fire vertical polarization layer are controlled through controlling the microstrip power divider, the amplitude of the horizontal polarization is equal to that of the vertical polarization, the phase difference is 90 degrees, and the antenna generates an orthogonal degenerate mode so as to form end-fire circular polarization.
Preferably, the microstrip power divider is a 1-to-2 power divider, one end of the microstrip power divider is connected with the end-fire vertical polarization layer through a feed probe, one end of the microstrip power divider feeds power to the end-fire horizontal polarization layer, and the other end of the microstrip power divider is connected with the feed probe and feeds power to the end-fire vertical polarization layer.
The further scheme is as follows:
as a specific technical scheme of the end-fire horizontal polarization layer, the end-fire polarization layer comprises a first dielectric substrate and a radiator. The microstrip power divider is positioned at the top of the first medium substrate; one side of the radiator is connected with the bottom of the first dielectric substrate, and the other side of the radiator is connected with the end-fire vertical polarization layer. The end-fire polarization layer and the microstrip power divider form a Vivaldi antenna structure, and the working frequency of the antenna can be controlled by adjusting the distance of a gap between the slots of the radiators and the size of the opening.
In this scheme, the end-fire vertical polarization layer includes a second floor, a second dielectric substrate, and a metallized via hole. The metallized through hole is embedded into a second dielectric substrate to form a SIW transmission line, and the second substrate is positioned at the bottom of the second dielectric substrate; the radiator of the end-fire horizontal polarization layer is used as a floor, the floor, a second dielectric substrate and a metalized through hole, and one end of the SIW transmission line is opened to form the H-plane horn antenna.
As another specific technical solution of an end-fire horizontal polarization layer, the end-fire horizontal polarization layer includes a first dielectric substrate, a radiator, and a first floor; the microstrip power divider and the radiator are positioned at the top of the first dielectric substrate; one side of the first floor is connected with the bottom of the first medium substrate, and the other side of the first floor is connected with the end-fire vertical polarization layer; the first dielectric substrate, the radiator, the first floor and the microstrip power divider form a microstrip yagi antenna structure.
In this scheme, the end-fire vertical polarization layer includes a second floor, a second dielectric substrate, and a metallized via hole. The metallized through hole is embedded into a second dielectric substrate to form a SIW transmission line, and the second substrate is positioned at the bottom of the second dielectric substrate; the first floor and the second floor of the end-fire horizontal polarization layer, the second dielectric substrate and the metalized through hole form an H-plane horn antenna by opening one end of the SIW transmission line.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the end-fire circularly polarized antenna has the characteristics of low profile, simple structure, compactness and low cost through the structural design of the antenna.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of example 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Reference numbers and corresponding part names:
the antenna comprises a 1-end-fire horizontal polarization layer, a 11-first dielectric substrate, a 12-radiator, a 13-first floor, a 2-end-fire vertical polarization layer, a 21-second floor, a 22-second dielectric substrate, a 23-metalized through hole, a 3-microstrip power divider and a 4-feed probe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present 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: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "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. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Example 1
As shown in fig. 1, the planar end-fire circularly polarized antenna of the present invention includes an end-fire horizontal polarization layer 1, an end-fire vertical polarization layer 2, and a microstrip power divider 3; the microstrip power divider 3 feeds power to the end-fire horizontal polarization layer 1 and the end-fire vertical polarization layer 2.
The end-fire horizontal polarization layer 1 is used for generating end-fire horizontal polarization and comprises a first dielectric substrate 11 and a radiator 12. The microstrip power divider 4 is located on the top of the first dielectric substrate 11; the radiator 12 is connected with the bottom of the first dielectric substrate 11 on one side and the end-fire vertical polarization layer 2 on the other side. The end-fire polarization layer and the microstrip power divider 4 form a Vivaldi antenna structure, and the working frequency of the antenna can be controlled by adjusting the distance of the gap between the slot gaps of the radiator 12 and the size of the opening.
The end-fire vertical polarization layer 2 is used for generating end-fire vertical polarization and comprises a second floor 21, a second dielectric substrate 22 and a metalized through hole 23. The metallized through hole 23 is embedded into a second dielectric substrate 22 to form a SIW transmission line, and the second floor 21 is positioned at the bottom of the second dielectric substrate 22; the radiator 12 of the end-fire horizontal polarization layer is used as a floor, the floor and a second floor 21, a second dielectric substrate 22 and a metalized through hole 23, and one end of the SIW transmission line is opened to form the H-plane horn antenna.
The microstrip power divider 4 is a 1-division-2 power divider, one end of the microstrip power divider 4 is connected with the end-fire vertical polarization layer 2 through a feed probe 4, one end of the microstrip power divider 4 feeds electricity to the end-fire horizontal polarization layer 1, and the other end of the microstrip power divider is connected with the feed probe 4 to feed electricity to the end-fire vertical polarization layer 2.
The microstrip power divider controls the amplitude and the phase of horizontal polarization generated by the end-fire horizontal polarization layer and vertical polarization generated by the end-fire vertical polarization layer, so that the amplitude of the horizontal polarization is equal to that of the vertical polarization, the phase difference is 90 degrees, and the antenna generates an orthogonal degenerate mode so as to form end-fire circular polarization.
Example 2
As shown in fig. 2, the planar end-fire circularly polarized antenna of the present invention includes an end-fire horizontal polarization layer 1, an end-fire vertical polarization layer 2, and a microstrip power divider 3; the microstrip power divider 3 feeds power to the end-fire horizontal polarization layer 1 and the end-fire vertical polarization layer 2.
The end-fire horizontal polarization layer 1 is used for generating end-fire horizontal polarization and comprises a first dielectric substrate 11, a radiator 12 and a first floor 13; the microstrip power divider 4 and the radiator 12 are positioned on the top of the first dielectric substrate 11; one surface of the first floor 13 is connected with the bottom of the first medium substrate 11, and the other surface is connected with the end-fire vertical polarization layer 2; the first dielectric substrate 11, the radiator 12, the first floor 13 and the microstrip power divider 3 form a microstrip yagi antenna structure.
The end-fire vertical polarization layer 2 is used for generating end-fire vertical polarization and comprises a second floor 21, a second dielectric substrate 22 and a metalized through hole 23. The metallized through hole 23 is embedded into a second dielectric substrate 22 to form a SIW transmission line, and the second floor 21 is positioned at the bottom of the second dielectric substrate 22; the first floor 13 and the second floor 21 of the end-fire horizontal polarization layer, the second dielectric substrate 22 and the metalized via hole 23 open one end of the SIW transmission line to form an H-plane horn antenna.
The microstrip power divider 4 is a 1-division-2 power divider, one end of the microstrip power divider 4 is connected with the end-fire vertical polarization layer 2 through a feed probe 4, one end of the microstrip power divider 4 feeds electricity to the end-fire horizontal polarization layer 1, and the other end of the microstrip power divider is connected with the feed probe 4 to feed electricity to the end-fire vertical polarization layer 2.
The microstrip power divider controls the amplitude and the phase of horizontal polarization generated by the end-fire horizontal polarization layer and vertical polarization generated by the end-fire vertical polarization layer, so that the amplitude of the horizontal polarization is equal to that of the vertical polarization, the phase difference is 90 degrees, and the antenna generates an orthogonal degenerate mode so as to form end-fire circular polarization.
The end-fire circularly polarized antenna designed by the invention has the characteristics of low profile, simple structure, compactness and low cost, and is particularly suitable for being applied to equipment such as satellites, handheld terminals, automobiles, aircrafts and the like.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A planar end-fire circularly polarized antenna is characterized by comprising an end-fire horizontal polarization layer (1), an end-fire vertical polarization layer (2) and a micro-strip power divider (3); the microstrip power divider (3) feeds power to the end-fire horizontal polarization layer (1) and the end-fire vertical polarization layer (2).
2. The planar end-fire circularly polarized antenna according to claim 1, further comprising a feed probe (4), wherein the feed probe (4) is used for connecting the microstrip power divider (3) and the end-fire vertically polarized layer (2), and the microstrip power divider (3) feeds the end-fire vertically polarized layer (2) through the feed probe (4).
3. The planar end-fire circularly polarized antenna according to claim 2, wherein the microstrip power divider (4) is a 1-to-2 power divider, one end of which is connected to the end-fire horizontally polarized layer (1) and the other end of which is connected to the feed probe (4).
4. The planar end-fire circularly polarized antenna according to claim 3, wherein said end-fire horizontally polarized layer (1) comprises a first dielectric substrate (11), a radiator (12).
5. The planar end-fire circularly polarized antenna according to claim 4, wherein the end-fire horizontally polarized layer (1) and the microstrip power divider (4) form a Vivaldi antenna structure.
6. The planar end-fire circularly polarized antenna according to claim 5, wherein said microstrip power divider (4) is located on top of said first dielectric substrate (11); one side of the radiator (12) is connected with the bottom of the first dielectric substrate (11), and the other side of the radiator is connected with the end-fire vertical polarization layer (2).
7. The planar end-fire circularly polarized antenna according to claim 4, wherein said end-fire horizontally polarized layer (1) further comprises a first floor (13); the first dielectric substrate (11), the radiator (12), the first floor (13) and the microstrip power divider (3) form a microstrip yagi antenna structure.
8. The planar end-fire circularly polarized antenna according to claim 7, wherein said microstrip power divider (4), radiator (12) are located on top of the first dielectric substrate (11); one surface of the first floor (13) is connected with the bottom of the first medium substrate (11), and the other surface of the first floor is connected with the end-fire vertical polarization layer (2).
9. The planar end-fire circularly polarized antenna according to any of claims 1 to 8, wherein the end-fire vertically polarized layer (2) comprises a second ground plane (21), a second dielectric substrate (22), and a metallized via (23). The metalized through hole (23) is embedded into a second dielectric substrate (22) to form a SIW transmission line, and the second floor (21) is positioned at the bottom of the second dielectric substrate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026558.9A CN112151958A (en) | 2020-09-25 | 2020-09-25 | Plane end-fire circularly polarized antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026558.9A CN112151958A (en) | 2020-09-25 | 2020-09-25 | Plane end-fire circularly polarized antenna |
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| CN112151958A true CN112151958A (en) | 2020-12-29 |
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| CN202011026558.9A Pending CN112151958A (en) | 2020-09-25 | 2020-09-25 | Plane end-fire circularly polarized antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437483A (en) * | 2021-06-04 | 2021-09-24 | 大连海事大学 | Horizontal polarization/circular polarization reconfigurable ship radar antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170040711A1 (en) * | 2015-07-07 | 2017-02-09 | Cohere Technologies, Inc. | Inconspicuous multi-directional antenna system configured for multiple polarization modes |
| CN109586018A (en) * | 2018-11-05 | 2019-04-05 | 广东曼克维通信科技有限公司 | A kind of vivaldi antenna and dual polarization probe |
| CN109860994A (en) * | 2019-01-21 | 2019-06-07 | 中国人民解放军陆军工程大学 | Planar microstrip patch antenna with broadband end-fire circular polarization characteristic |
| CN110098492A (en) * | 2018-01-27 | 2019-08-06 | 成都华为技术有限公司 | A kind of dual polarized antenna, radio frequency front-end device and communication equipment |
-
2020
- 2020-09-25 CN CN202011026558.9A patent/CN112151958A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170040711A1 (en) * | 2015-07-07 | 2017-02-09 | Cohere Technologies, Inc. | Inconspicuous multi-directional antenna system configured for multiple polarization modes |
| CN110098492A (en) * | 2018-01-27 | 2019-08-06 | 成都华为技术有限公司 | A kind of dual polarized antenna, radio frequency front-end device and communication equipment |
| CN109586018A (en) * | 2018-11-05 | 2019-04-05 | 广东曼克维通信科技有限公司 | A kind of vivaldi antenna and dual polarization probe |
| CN109860994A (en) * | 2019-01-21 | 2019-06-07 | 中国人民解放军陆军工程大学 | Planar microstrip patch antenna with broadband end-fire circular polarization characteristic |
Non-Patent Citations (1)
| Title |
|---|
| 苗倩 等: ""一种具有平面端射圆极化的互补八木阵列天线"", 《功能材料与器件学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437483A (en) * | 2021-06-04 | 2021-09-24 | 大连海事大学 | Horizontal polarization/circular polarization reconfigurable ship radar antenna |
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Application publication date: 20201229 |