CN211062858U - High-power capacity dual-band elliptical patch reflection array antenna - Google Patents
High-power capacity dual-band elliptical patch reflection array antenna Download PDFInfo
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- CN211062858U CN211062858U CN202020203436.1U CN202020203436U CN211062858U CN 211062858 U CN211062858 U CN 211062858U CN 202020203436 U CN202020203436 U CN 202020203436U CN 211062858 U CN211062858 U CN 211062858U
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Abstract
The utility model discloses an oval paster reflect array antenna of high power capacity dual band relates to microwave communication technical field. 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 utility model relates to a microwave communication technical field particularly, relates to a high power capacity dual-band ellipse patch reflect array antenna.
Background
High power capacity Microwave Antennas are widely studied with the development and Application of High power Microwave technology, and mainly aimed at increasing the Antenna operating frequency [ c. -w.yuan, s. -r.pen, t.shu, z. -Q. L i, and h.wang, "signals and Experiments of a novelradio L ine Slot Antenna for High power Microwave Application," IEEE trans.antennas Antennas probes pro. page.61, No.10, p.4940-2 ], improving the Antenna power capacity [ Y. L, j.zhang, Q. L iu, and X. L i, "High-power Antennas," 4940-493 2 ], improving the Antenna power capacity [ Y. L, J. zhang, Q. L iu, and X. L i, "High-Antenna probe, No.10," noise Antenna 14, wo. 12, IEEE sthat. 31, IEEE # 12, etc. ] and IEEE # 12. p.15, etc. "Antenna rf, rf.
The Single-layer Dual-Band patch reflection array Antenna has the advantages of low processing cost and capability of avoiding shielding loss between double-layer elements, wherein the Single-layer Dual-Band patch reflection array Antenna has the advantages of low processing cost and capability of realizing high and low frequency phase adjustment by rotating inner and outer rings respectively [ T.Smith, U.S. Gothenf, O.S. Kim, and O.Breinbb jerg "," Design, Manufacturing, and Testing of a 20/30-GHz Dual-Band circular Polarized reflecting Antenna, "IEEE rectangular Antenna with phase adjustment of L et. vol, patch field 12, 1480-1483,2013, 0-67605, and" Dual-Band delay line tuning of high and low frequency radiation ", and the" IEEE rectangular patch Antenna with high frequency impedance, frequency tuning and frequency tuning impedance loop ", the" Dual-Antenna with high frequency impedance tuning and frequency tuning impedance tuning and Dual-frequency tuning impedance ", the" Dual-loop Antenna achieves high and high frequency radiation, high frequency impedance tuning and frequency tuning impedance tuning, etc. 20, etc. for high power, etc. of high power, and low frequency capacity, high frequency.
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.
SUMMERY OF THE UTILITY MODEL
The utility model provides an oval paster reflectarray antenna of high power capacity dual-band, it can alleviate above-mentioned problem.
In order to alleviate the above-mentioned problem, the utility model discloses the technical scheme who takes as follows:
the utility model provides a high power capacity dual-band elliptical patch reflect array antenna, which comprises a feed source and a dual-band patch reflect array, wherein the dual-band patch reflect 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 that are required 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 embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, 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 reflection array 2 is 345mm × 345 mm.c. band feed antenna feeds the dual-band patch reflection array 2 in a 15 ° offset feed manner, and the X band feed antenna feeds the dual-band patch reflection array 3 in a positive feed manner, and the phase compensation is performed by adjusting the rotation angle of the radiation patch, so that the main beam points to a 15 ° direction, and the far field result of the dual-band patch reflection array 3 is obtained as 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 conclusion, the high power capacity dual-band elliptical patch reflector array antenna of the present invention can simultaneously operate in dual frequency bands, and has the performance 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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| CN202020203436.1U CN211062858U (en) | 2020-02-24 | 2020-02-24 | High-power capacity dual-band elliptical patch reflection array antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193108A (en) * | 2020-02-24 | 2020-05-22 | 西南交通大学 | High-power capacity dual-band elliptical patch reflection array antenna |
| WO2022217558A1 (en) * | 2021-04-13 | 2022-10-20 | 东南大学 | Broadband dual-frequency dual-circular-polarization reflective array antenna with independently controllable wave beams |
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- 2020-02-24 CN CN202020203436.1U patent/CN211062858U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193108A (en) * | 2020-02-24 | 2020-05-22 | 西南交通大学 | High-power capacity dual-band elliptical patch reflection array antenna |
| WO2022217558A1 (en) * | 2021-04-13 | 2022-10-20 | 东南大学 | Broadband dual-frequency dual-circular-polarization reflective array antenna with independently controllable wave beams |
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