CN111193108A - High-power capacity dual-band elliptical patch reflection array antenna - Google Patents
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- H—ELECTRICITY
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- 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
- 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
- H01Q19/10—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 reflecting surfaces
- H01Q19/104—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 reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
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- H—ELECTRICITY
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- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
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- 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
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
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- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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Abstract
The invention discloses a high-power capacity dual-band elliptical patch reflector array antenna, and relates to the technical field of microwave communication. Compared with the traditional high-power capacity antenna, the antenna adopts the elliptical patches with different frequency bands and staggered arrangement as the radiation patches, overcomes the limitation of low aperture utilization rate caused by narrow bandwidth of the traditional high-power capacity antenna, can realize radiation of high-power capacity microwaves in double frequency bands, is flexible in arrangement of the reflection array and easy to conform, gets rid of the limitation of antenna efficiency caused by insertion loss, and has higher efficiency; compared with the existing dual-band patch reflection array antenna, the antenna adopts the elliptical patch antenna unit as the radiation unit, avoids field intensity concentration caused by the abrupt change structure of the slot and the seam of the patch, and meanwhile, the radiation patch is embedded in the same dielectric layer in the dielectric plate, thereby improving the power capacity of the reflection array antenna.
Description
Technical Field
The invention relates to the technical field of microwave communication, in particular to a high-power capacity dual-band elliptical patch reflection array antenna.
Background
The high-power capacity microwave antenna plays a role in radiating energy output by a high-power microwave source to a free space in a phased manner, and is a key component of a high-power microwave system. With the development and Application of High power Microwave technology, High power capacity array antennas have been extensively studied, and in general, these Studies mainly focused on increasing the Antenna operating frequency [ c. -w.yuan, s. -r.pen, t.shu, z. -q.li, and h.wang, "Designs and Experiments" a Novel radial line Slot Antenna for High power Microwave Application, "IEEE trans.antenna mapping, vol.61, No.10, pp.4940-4946,2013 ], improving the Antenna power capacity [ y.liang, j.zhang, q.liu, and x.li," High power Dual-Branch Antenna, "IEEE Antenna mapping, No. 17, vol.3, p.32, achieving High power capacity scanning [ c.472, g.52, g.12, c.wang., rf, c.52, c.wang., rf scanning beam, c.52, c.12, c.wang., rf scanning beam, c.32, c.wang., rf scanning beam, rf. ap.32, c.32, rf. mapping, c.32, c.12, rf. mapping, but their available bandwidth is usually relatively narrow, resulting in their aperture being less efficient.
The introduction of dual-frequency or multi-band technology into the high-power microwave field is one of the means for improving the aperture utilization rate of high-power capacity antennas. The patch reflect array antenna combines the advantages of a parabolic antenna and a phased array antenna, and has the characteristics of light weight, flexible array arrangement, easy conformal property and capability of realizing dual/multiband. The single-layer dual-band patch reflector array antenna has been widely studied because of its advantages of low processing cost and capability of avoiding shielding loss between the two layers of elements. Among them, the single-layer dual-band antenna is more representative: slotted-loop Antennas with high and low frequency phase adjustment by rotating the inner and outer loops respectively [ T.Smith, U.Gothelf, O.S. Kim, and O.Breinbb jerg, "Design, Manufacturing, and Testing of a 20/30-GHz Dual-Band circular Polarized reflective Antenna," IEEE Antenna with rectangular radiating and transmitting characteristics, Lett.12, pp.1480-1483,2013 ], rectangular loop slotted rectangular patch Antennas with varying rectangular side lengths for phase adjustment [ Z.Hamzavi-Zarghani and Z.Laasatbaf, "A New BroadBand tape-Band reflecting Antenna in X-and Ku-Bands," IEEE Antenna with high and low frequency phase adjustment, LEYNJ-Band 4452, and "Dual phase delay line of Dual phase radiating and delay, 12, Woodback + E.S.A.A.A.A.A.B.B.B.A.B.B.E.B.B.A.B.B.B.B.B.B.E.D.A.B.D.D.A.B.B.E.D.E.D.E.D.E.D.A.D.E.A.D.E.E.A.E.E.A.E.A. A. B.E.E.E.E.A. A. B.A. slotted rectangular patch Antenna in.A. with high and low frequency phase adjustment, high and low frequency delay line of high and low frequency delay line, and delay line of delay line, high and delay line, high delay line, however, due to the adoption of the abrupt patch structure, local field intensity concentration is easily caused, so that the power capacity of the antenna is low, and the application of the dual-band patch antenna in the high-power capacity microwave field is limited.
With the deep development of high-power microwave technology, the demand for dual-band high-power capacity microwave antennas with high aperture utilization rate is more and more urgent.
Disclosure of Invention
The present invention is directed to a high power capacity dual band elliptical patch reflector array antenna that alleviates the above-mentioned problems.
In order to alleviate the above problems, the technical scheme adopted by the invention is as follows:
the invention provides a high-power capacity dual-band elliptical patch reflector array antenna which comprises a feed source and a dual-band patch reflector array, wherein the dual-band patch reflector array comprises a dielectric plate and a plurality of radiation patches, and the dielectric plate is provided with a reflecting surface; the radiation patches are elliptical patches and comprise C-band radiation patches and X-band radiation patches, each radiation patch is embedded in the same dielectric layer in the dielectric plate, and the C-band radiation patches and the X-band radiation patches are arranged in a staggered mode.
The technical effect of the technical scheme is as follows: compared with the traditional high-power capacity antenna, the elliptical patches with different frequency bands and staggered arrangement are used as the radiation patches, so that the limitation of low aperture utilization rate caused by narrow bandwidth of the traditional high-power capacity antenna is overcome, the radiation of high-power capacity microwaves can be realized in a dual-frequency band, the reflective array is flexible in arrangement and easy to conform, the limitation of antenna efficiency caused by insertion loss is eliminated, and the efficiency is higher; compared with the existing dual-band patch reflection array antenna, the elliptical patch antenna unit is used as the radiation unit, so that field intensity concentration caused by the abrupt change structure of the slot and the seam of the patch is avoided, and meanwhile, the radiation patch is embedded in the same dielectric layer in the dielectric plate, so that the power capacity of the reflection array antenna is improved.
Optionally, the C-band radiating patch has a major axis of 17.6mm and a minor axis of 16.2 mm; the long axis of the X-band radiation patch is 11.14mm, and the short axis of the X-band radiation patch is 10.5 mm.
Optionally, the dielectric plate is formed by overlapping an upper dielectric plate and a lower dielectric plate, and the radiation patch is located between the upper dielectric plate and the lower dielectric plate.
The technical effect of the technical scheme is as follows: the radiation patch is convenient to embed, and the processing technology is simplified.
Optionally, the dielectric plate has a dielectric constant of 2.2 and a loss tangent of 0.0009; the thickness of the upper layer medium plate is 1.575mm, and the thickness of the lower layer medium plate is 0.787 mm; the distance between adjacent C-band radiating patches and X-band radiating patches is 23 mm.
Specifically, the radiation patches are processed in the dielectric slab by an etching method, and the placement angles of the radiation patches are rotated in the processing process so as to adjust the phases of the reflected waves.
The technical effect of the technical scheme is as follows: the independent phase adjustment of the high-frequency patch and the low-frequency patch is easy to realize.
Specifically, the feed source and the radiation patch are both metal bodies.
More specifically, the feed source is an antenna which is arranged above the dual-band patch reflection array and can radiate circularly polarized waves.
More specifically, the feed source is an antenna shared by a high frequency band and a low frequency band, or two antennas respectively working at the high frequency band and the low frequency band.
More specifically, the antenna beam of the feed source is a pencil beam or a shaped beam, and the feed mode is positive feed or offset feed.
More specifically, the reflective surface is a metal surface.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a high power capacity dual band elliptical patch reflectarray antenna according to an embodiment;
FIG. 2 is a schematic front view of an antenna unit in an embodiment;
FIG. 3 is a schematic top view of an antenna unit according to an embodiment;
FIG. 4 is a diagram showing the results of numerical simulation of the antenna unit in the embodiment;
FIG. 5 is a graph of the results of numerical simulations of a high power capacity dual band elliptical patch reflector array antenna according to an embodiment;
in the figure: the antenna comprises a feed source 1, a 2-dual-band patch reflection array, a 3a-C band radiation patch, a 3b-X band radiation patch, an upper dielectric plate 4a, a lower dielectric plate 4b and a 5-reflection surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
Examples
Referring to fig. 1 to 3, the present embodiment provides a high power capacity dual-band elliptical patch reflective array antenna, which includes a feed source 1 and a dual-band patch reflective array 2, where the dual-band patch reflective array 2 includes a dielectric plate and a plurality of radiation patches, and the dielectric plate is provided with a reflective surface 5; the radiation patches are elliptical patches and include a C-band radiation patch 3a and an X-band radiation patch 3b, each of which is embedded in the same dielectric layer in the dielectric plate, and the C-band radiation patches 3a and the X-band radiation patches 3b are arranged in a staggered manner.
In this embodiment, the feed source 1 is two horn antennas respectively working at high and low frequency bands and capable of radiating circular polarized waves, and is disposed above the dual-band patch reflection array 2, the beam shape is a conventional pencil beam, the C-band feed source antenna feeds the reflection array in an offset feed mode, and the X-band feed source antenna feeds the reflection array in a positive feed mode.
In this embodiment, the dielectric plate is formed by overlapping an upper dielectric plate 4a and a lower dielectric plate 4b, and the radiation patch is located between the upper dielectric plate 4a and the lower dielectric plate 4 b.
In this embodiment, the main dimension parameters of each part structure are: the major axis length a1 of the C-band radiation patch 3a is 17.6mm, and the minor axis length a2 is 16.2 mm; the long axis b1 of the X-band radiation patch 3b is 11.14mm, and the short axis b2 is 10.5 mm; the dielectric plate adopts Rogers 5880 (the dielectric constant is 2.2, the loss tangent is 0.0009), the thickness H1 of the upper dielectric plate 4a is 1.575mm, and the thickness H2 of the lower dielectric plate 4b is 0.787 mm; the distance between the adjacent C-band radiation patches 3a and the X-band radiation patches 3b is 23 mm.
The working mode of the high-power capacity dual-band elliptical patch reflector array antenna is as follows: circularly polarized waves are excited by the feed source 1, the phase delay amount required by each antenna unit on the corresponding frequency is determined according to the relative position from the phase center position of the feed source 1 to each antenna unit of the dual-band patch reflection array 2 and the set main beam direction, and then the rotation angle of each antenna unit is determined, so that the pencil-shaped beam radiation of the reflection array antenna at the set main beam direction is realized. Before implementation, the rotation angles of the dual-band reflection array antenna unit are respectively scanned by parameters in the dual-band by using electromagnetic simulation software, so as to obtain reflection phase delay amounts corresponding to different rotation angles in the dual-band.
In this embodiment, electromagnetic simulation software is used to simulate the high-power capacity dual-band elliptical patch reflective array antenna, wherein the working frequency points of the antenna are respectively 6.2GHz and 9.3 GHz.
In this embodiment, the dual-band patch reflector array 2 is composed of a plurality of antenna elements, each of which includes a C-band radiation patch 3a and an X-band radiation patch 3 b. The left-handed circularly polarized wave is input into the plane wave port to excite the antenna unit, and the numerical simulation result of the antenna unit is shown in fig. 4:
FIG. 4-1 shows the effect of different high frequency bin turns on the 6.2GHz reflection amplitude and phase responseuWhen the reflection amplitude and the phase response curve of the elliptical patch reflection array antenna unit are 0 degree, 40 degrees, 80 degrees, 120 degrees and 160 degrees, the reflection amplitude and the phase response curve of the elliptical patch reflection array antenna unit at 6.2GHz have small difference, which shows that the reflection amplitude and the phase of the high-frequency unit have small influence on the low-frequency unit. FIG. 4-2 shows the effect of different low frequency bin turns on the 9.3GHz reflection amplitude and phase responselWhen the reflection amplitude and the phase response curve of the elliptical patch reflection array antenna unit are 0 degree, 40 degrees, 80 degrees, 120 degrees and 160 degrees, the reflection amplitude and the phase response curve of the elliptical patch reflection array antenna unit at 9.3GHz have small difference, which shows that the reflection amplitude and the phase of the high-frequency unit are slightly influenced by the low-frequency unit. The result shows that under the condition of reasonably designing the size parameters of the dual-band elliptical patch reflection array antenna unit, the high/low frequency reflection phases can be independently controlled, and the mutual influence is small.
Fig. 4-3 shows the effect of different incident angles on the 6.2GHz reflection amplitude and phase response, with the reflection phase responses almost completely consistent at normal incidence and 20 ° oblique incidence, with a maximum phase difference of 6 °, while meeting 360 ° phase compensation, with the reflection amplitude kept within-0.45 dB. Fig. 4-4 shows the effect of different incident angles on 9.3GHz reflection amplitude and phase response, and when the light is incident at normal incidence and 20 ° oblique incidence, the reflection phase response has better consistency, the maximum phase difference is 13.2 °, and simultaneously, 360 ° phase compensation is satisfied, and the amplitude is kept within-0.82 dB. The results show that the cell can achieve more stable reflection amplitude and phase response at the same time in the dual frequency band under different incidence angles. The above results show that the dual-band reflection antenna unit has the performances of low mutual coupling, low loss and good amplitude and phase oblique incidence stability.
In this embodiment, the aperture size of the dual-band patch reflective array 2 is 345mm × 345 mm. The C-band feed source antenna feeds the dual-band patch reflection array 2 in a 15-degree offset feeding mode, and the X-band feed source antenna feeds the dual-band patch reflection array 3 in a positive feeding mode. The phase compensation is performed by adjusting the rotation angle of the radiation patch, so that the main beam points in the direction of 15 degrees, and the far field result of the dual-band patch reflection array 3 is shown in fig. 5: :
fig. 5-1 shows the radiation pattern in two orthogonal planes at 6.2GHz, with an antenna gain of 24.7dB, a corresponding aperture efficiency of 46.2%, an axial ratio of 0.7dB, a sidelobe level of-19.9 dB, a cross-polarization level of-22.7 dB, and a-3 dB beamwidth of 9.7 degrees. Fig. 5-2 shows the radiation direction in two orthogonal planes at 9.3GHz, the antenna gain is 27.8dB, the corresponding aperture efficiency is 41.8%, the axial ratio is 1.3dB, the sidelobe level is-20.1 dB, the cross polarization level is-22 dB, and the-3 dB beamwidth is 5.8 °. The results show that the dual-band reflection antenna realizes pencil-shaped beam radiation in the specified direction under 6.2GHz and 9.3GHz, and the dual-band performance of the reflection array antenna is verified.
FIG. 5-3 shows the electric field distribution of the elliptical patch reflective array antenna at a working frequency of 6.2GHz, with an input power of 0.5W, a maximum electric field of the patch inside the dielectric of 2794V/m, a power capacity of 102.5MW calculated with a breakdown field strength threshold inside the dielectric of 40 MV/m; the maximum electric field of the dielectric surface is 522V/m, which is about 1/4 of the electric field of the patch, so that the power capacity of the antenna aperture surface is obviously improved, and the power capacity is 222MW calculated by the breakdown field intensity of the filled SF6 gas being 11 MV/m. 5-4 show the electric field distribution of the elliptical patch reflect array antenna at a frequency of 9.3GHz with an input power of 0.5W, a maximum electric field of the patch of 5922V/m, a power capacity of 22.8MW calculated from a dielectric internal breakdown field strength threshold of 40 MV/m; the maximum electric field of the medium surface is 881V/m, the breakdown field strength of the gas filled with SF6 is 11MV/m, and the power capacity is 77.9 MW. The above results verify that the reflectarray antenna can work in the high power capacity microwave radiation field of tens of MW magnitude.
In summary, the high-power capacity dual-band elliptical patch reflector array antenna can work under dual frequency bands simultaneously, and has the performances of high power capacity, high efficiency, flexible arrangement and easy conformality.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-power capacity dual-band elliptical patch reflection array antenna is characterized by comprising a feed source and a dual-band patch reflection array, wherein the dual-band patch reflection array comprises a dielectric plate and a plurality of radiation patches, and the dielectric plate is provided with a reflection surface; the radiation patches are elliptical patches and comprise C-band radiation patches and X-band radiation patches, each radiation patch is embedded in the same dielectric layer in the dielectric plate, and the C-band radiation patches and the X-band radiation patches are arranged in a staggered mode.
2. The high power capacity dual band elliptical patch reflector array antenna of claim 1 wherein said C-band radiating patch has a major axis of 17.6mm and a minor axis of 16.2 mm; the long axis of the X-band radiation patch is 11.14mm, and the short axis of the X-band radiation patch is 10.5 mm.
3. The high power capacity dual band elliptical patch reflect array antenna of claim 2 wherein said dielectric slab is formed by overlapping an upper dielectric slab and a lower dielectric slab, said radiating patch being located between said upper dielectric slab and said lower dielectric slab.
4. The high power capacity dual band elliptical patch reflector array antenna of claim 3 wherein said dielectric plate has a dielectric constant of 2.2 and a loss tangent of 0.0009; the thickness of the upper layer medium plate is 1.575mm, and the thickness of the lower layer medium plate is 0.787 mm; the distance between adjacent C-band radiating patches and X-band radiating patches is 23 mm.
5. The high power capacity dual band elliptical patch reflector array antenna of claim 4 wherein said radiating patches are etched into said dielectric plate and the placement angles of the radiating patches are rotated during processing to achieve adjustment of the phase of the reflected wave.
6. The high power capacity dual band elliptical patch reflector array antenna of claim 1 wherein said feed and said radiating patches are both metal bodies.
7. The high power capacity dual band elliptical patch reflector array antenna of claim 6 wherein said feed is an antenna positioned above said dual band patch reflector array and radiating circularly polarized waves.
8. The high power capacity dual band elliptical patch reflect array antenna of claim 7 wherein said feed is a common antenna for both high and low frequency bands or two antennas operating in both high and low frequency bands.
9. The dual-band elliptical patch reflectarray antenna of claim 8, in which the antenna beam of said feed is a pencil beam or a shaped beam, and the feed is positive or offset.
10. The high power capacity dual band elliptical patch reflector array antenna of claim 9 wherein said reflective surface is a metal surface.
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| CN116154467A (en) * | 2023-04-04 | 2023-05-23 | 深圳市齐奥通信技术有限公司 | Dual-frenquency reflection array antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022048433A1 (en) * | 2020-09-07 | 2022-03-10 | 华为技术有限公司 | Method for controlling polarization direction of antenna, and antenna system |
| CN116154467A (en) * | 2023-04-04 | 2023-05-23 | 深圳市齐奥通信技术有限公司 | Dual-frenquency reflection array antenna |
| CN116154467B (en) * | 2023-04-04 | 2023-10-20 | 深圳市齐奥通信技术有限公司 | Dual-frenquency reflection array antenna |
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