CN115775968A - Satellite-borne ultra-wideband low-profile lightweight array antenna - Google Patents
Satellite-borne ultra-wideband low-profile lightweight array antenna Download PDFInfo
- Publication number
- CN115775968A CN115775968A CN202211624180.1A CN202211624180A CN115775968A CN 115775968 A CN115775968 A CN 115775968A CN 202211624180 A CN202211624180 A CN 202211624180A CN 115775968 A CN115775968 A CN 115775968A
- Authority
- CN
- China
- Prior art keywords
- antenna
- subunit
- ultra
- profile
- subunits
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a satellite-borne ultra-wideband low-profile lightweight array antenna, wherein an antenna unit is composed of two orthogonally placed radiation subunits, the two radiation subunits are arranged in an L shape, and are connected in a slot-to-slot mode. The mode of arranging the trapezoidal holes on the antenna units optimizes the surface current distribution and realizes the effect of loading the capacitor, and meanwhile, the tight coupling technology is adopted, so that the profile height of the antenna is reduced, and the whole weight is also reduced. The method of loading the virtual element on the edge of the array antenna is adopted to realize the truncation processing of the array edge unit, so that the edge unit has good impedance matching characteristics. The invention realizes the design of a practical dual-polarized, low-profile, high-gain and light ultra-wideband satellite-borne array antenna.
Description
Technical Field
The invention belongs to the field of ultra wide band array antennas, and particularly relates to a satellite-borne ultra wide band low-profile lightweight array antenna.
Background
The array antenna technology is a current research hotspot and is widely applied to various electronic equipment systems. Meanwhile, the satellite-borne wireless equipment is developed towards light weight, integration and the like, and new requirements are made on the aspects of the working bandwidth, the volume, the weight and the like of the array antenna.
The Vivaldi antenna is a traditional ultra wide band antenna form, is often used in the design of an ultra wide band array antenna unit, and mainly adopts a structure in a micro-strip form or a metal form. The traditional Vivaldi antenna in the form of a microstrip is light in weight because copper is coated on two sides of a dielectric substrate, but the physical strength is low, and the radiation of a space environment cannot be effectively resisted. The traditional metal Vivaldi antenna has the problems of high profile, heavy weight and the like, and is not beneficial to being integrated and used on a carrier platform with limited space. At present, fewer Vivaldi antennas with ultra-wideband impedance matching and miniaturized structures are provided, which is a problem to be solved urgently by a satellite-borne ultra-wideband array antenna.
The array antenna is designed by combining a close coupling technology and a structurally optimized metal Vivaldi antenna, not only has the characteristics of ultra wide band, large scanning angle and the like, but also has the characteristics of low section, strong structural stability, light weight, miniaturization, easiness in processing and the like, so that the array antenna is widely applied to multifunctional electronic systems with reconnaissance, interference, detection, communication and the like on a satellite-borne platform.
The structure optimization design is carried out on the traditional metal Vivaldi antenna, and the size and the weight of the ultra-wideband antenna can be reduced. The mode that the antenna is provided with the trapezoidal hole on the surface of the radiating subunit changes the surface current distribution and increases the coupling capacitance, so that the equivalent caliber is increased, the section height of the antenna is reduced, and the whole weight is reduced.
Disclosure of Invention
The invention provides a satellite-borne ultra-wideband low-profile lightweight array antenna.A trapezoidal hole is added on a radiating subunit, so that the overall weight of the antenna is reduced under the condition of not influencing the electrical performance; adopt metal construction, make the overall structure intensity of antenna increase to have advantages such as high temperature resistant, difficult deformation.
The technical solution for realizing the invention is as follows: a satellite-borne ultra-wideband low-profile lightweight array antenna comprises a metal reflection floor and a plurality of sub-arrays, wherein each sub-array is formed by arranging M x N antenna units on the metal reflection floor along two mutually orthogonal directions. The antenna unit consists of two orthogonally placed radiation subunits, the two radiation subunits are arranged in an L shape and are connected in a slotting and opposite-inserting mode, one radiation subunit in the same antenna unit is called a vertical polarization antenna subunit, and the other radiation subunit is called a horizontal polarization antenna subunit; in order to reduce the height of the antenna section, the change of surface current distribution is considered, the coupling capacitance is increased, the trapezoidal hole is formed in the surface of the radiating subunit, the surface current is optimized, the effect of loading the capacitance is achieved, the equivalent caliber is increased, the height of the antenna section is reduced, and the height of the antenna is only 0.227 times of the low-frequency wavelength.
Compared with the prior art, the invention has the remarkable advantages that: the invention carries out structure optimization design on the traditional Vivaldi antenna, and realizes the design of the ultra-wideband low-profile orthogonal dual-polarized antenna unit by utilizing the close-coupled array technology. The same antenna unit (virtual element) is added on the edge of the metal array antenna to realize the truncation processing of the array edge unit, so that the edge unit has good impedance matching characteristic. The dual-polarized array antenna has the characteristics of wide working frequency band, high gain, low section, light weight, small size and the like, and has wide application prospect on a satellite-borne platform.
Drawings
Fig. 1 is a schematic diagram of a slotting method of a vertically polarized antenna subunit group.
Fig. 2 is a schematic diagram of a slotting method of a horizontal polarization antenna subunit group.
Figure 3 is a schematic diagram of a dual polarized array antenna element.
Fig. 4 is a 10 x 10 array antenna model.
Fig. 5 is a simulation result of an active standing wave of an array antenna unit, in which (a) is a vertical polarization and (b) is a horizontal polarization.
Fig. 6 shows simulation results of patterns of the array antenna with different scanning angles, wherein (a) the pattern is 0.8GHz, (b) the pattern is 1.4GHz, and (c) the pattern is 2.0GHz.
Fig. 7 shows the results of the array antenna pattern test, wherein (a) is at 0.8GHz, (b) is at 1.4GHz, and (c) is at 2.0GHz.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
In addition, descriptions such as "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "connected," "secured," and the like are to be construed broadly, e.g., "secured" may be fixedly connected, releasably connected, or integral; "connected" may be mechanically or electrically connected. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the scope of the protection claimed in the present invention.
The following further introduces specific embodiments, technical difficulties and inventions of the present invention with reference to the design examples.
With reference to fig. 1 to 4, the satellite-borne ultra-wideband low-profile lightweight array antenna comprises a metal reflective floor 6 and a plurality of sub-arrays, wherein each sub-array is formed by arranging M × N antenna units on the metal reflective floor 6 along two mutually orthogonal directions.
The antenna unit is composed of two orthogonally placed radiation subunits, the two radiation subunits are arranged in an L shape and are connected in a slot-to-plug mode, one radiation subunit in the same antenna unit is called a vertical polarization antenna subunit 3, and the other radiation subunit is called a horizontal polarization antenna subunit 5.
In order to reduce the height of the antenna section, the surface current distribution is considered to be changed, and the coupling capacitance is increased, the invention innovatively provides that the trapezoidal holes are formed in the surface of the radiating subunit, the surface current is optimized, the effect of loading the capacitance is realized, the equivalent caliber is increased, and the height of the antenna section is reduced.
The M vertical polarization antenna subunits 3 positioned in the same row form a vertical polarization antenna subunit group in an integrated processing mode, and N vertical polarization antenna subunit groups are arranged in total. Fig. 1 is a schematic diagram of a hole-forming manner of a vertically polarized antenna subunit 3, the vertically polarized antenna subunit 3 adopts a Vivaldi antenna, and a first slot 1 is formed at the junction of two adjacent vertically polarized antenna subunits 3 from top to bottom for integral assembly. In order to reduce the weight of the structure without affecting the electrical performance of the antenna unit, two first trapezoidal holes 2 need to be symmetrically formed in each vertical polarization antenna subunit 3, and the height of each first trapezoidal hole 2 does not exceed one half of the height of the antenna unit. Four sharp corners of the first trapezoid-shaped hole 2 are subjected to rounding treatment, so that the influence of point discharge on performance is reduced. Meanwhile, the two first trapezoidal holes 2 symmetrically formed in the vertical polarization antenna subunit 3 can change the current distribution on the surface of the antenna, so that the effect of loading capacitance is realized, the profile of the antenna is reduced, and the low-profile characteristic of the antenna is realized.
The N horizontally polarized antenna subunits 5 located in the same row form a horizontally polarized antenna subunit group in an integrated processing manner, and the horizontally polarized antenna subunit group is M rows in total. Fig. 2 is a schematic diagram of the manner of opening the horizontal polarization antenna subunit 5. The horizontal polarization antenna sub-units 5 adopt Vivaldi type antennas, and the junction of two adjacent horizontal polarization antenna sub-units 5 is provided with a second notch 4 from bottom to top for integral assembly. In order to reduce the weight of the structure without affecting the electrical performance of the antenna unit, two second trapezoidal holes 7 need to be symmetrically formed on each horizontally polarized antenna subunit 5, and the height of each second trapezoidal hole 7 is not more than half of the height of the antenna unit. And four sharp corners of the second trapezoid-shaped hole 7 are subjected to rounding treatment, so that the influence of point discharge on the performance is reduced.
N vertical polarization subunit and M horizontal polarization subunit carry out the opposite insertion through second notch 4 and first notch 1, and horizontal polarization antenna subunit pegs graft on vertical polarization antenna subunit, is the L type and arranges, has realized the assembly of M N dual polarized antenna element.
Figure 3 is a schematic diagram of a dual polarized array antenna element. In order to enhance the structural stability of the antenna, the front and back surfaces of the bottom of the antenna unit are additionally provided with bosses 9 to realize widening. The boss 9 is provided with a feed hole 8, and each radiating subunit is fed by an SMP connector by adopting a simple coaxial feed mode.
The antenna height is only 0.227 times the low frequency wavelength.
Because the antenna unit feeds power from the bottom, the SMP connector is connected to the bottom surface of the metal reflective floor 6 through the flange plate, and the inner core of the SMP connector feeds power upwards to penetrate through the metal reflective floor 6.
Fig. 4 is a schematic diagram of the overall structure of a 10 × 10 array antenna. The 10 x 10 antenna unit is mounted on the metal reflective floor 6, the SMP connector is mounted on the bottom surface of the metal reflective floor 6, and the feeding core of the SMP connector feeds the antenna sub-unit through the feeding hole 8. When the antenna works, only the central 8 x 8 array elements are fed, and the most marginal circle of array elements are virtual elements and are loaded with 50-ohm matched loads.
Fig. 5 is a simulation result of active standing waves of different polarization ports of the array antenna unit. The (a) diagram is vertical polarization, and the (b) diagram is horizontal polarization. It can be seen from the figure that the antenna performance is still relatively stable without deterioration when the scanning angle is + -45 deg..
Fig. 6 is a simulation result of the directional diagram of the array antenna under different scanning angles, wherein (a) the diagram is 0.8GHz, (b) the diagram is 1.4GHz, (c) the diagram is 2.0GHz, and fig. 7 is a test result of the directional diagram of the array antenna, wherein (a) the diagram is 0.8GHz, (b) the diagram is 1.4GHz, and (c) the diagram is 2.0GHz, and it can be seen from the diagram that when different frequency points are scanned to ± 45 °, the antenna gain is not greatly reduced, relatively stable, and higher.
The main inventive points of the project are as follows:
the metal structure is adopted, and the trapezoidal holes are formed in the antenna units, so that the profile height and the weight of the antenna are reduced;
the tight coupling array technology is adopted, the coupling effect among the antenna units is enhanced, and the ultra-wideband impedance matching performance is realized;
the impedance matching characteristic of the edge unit is improved by adopting a mode of loading virtual elements on the edge of the array antenna;
the antenna is assembled by adopting a slotting and opposite-inserting mode, the bottom of the antenna is widened, and the structural stability is enhanced.
The foregoing is merely illustrative of embodiments of the present invention. It should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. The utility model provides a low section lightweight array antenna of satellite-borne ultra wide band which characterized in that: the antenna comprises a metal reflecting floor (6) and a plurality of sub-arrays, wherein each sub-array is formed by respectively arranging M multiplied by N antenna units on the metal reflecting floor (6) along two mutually orthogonal directions;
the antenna unit is composed of two orthogonally placed radiation subunits which are arranged in an L shape and are connected in a slot-to-plug mode, one radiation subunit in the same antenna unit is called a vertical polarization antenna subunit (3), and the other radiation subunit is called a horizontal polarization antenna subunit (5); in order to reduce the height of the antenna section, the change of surface current distribution is considered, the coupling capacitance is increased, the trapezoidal hole is formed in the surface of the radiating subunit, the surface current is optimized, the effect of loading the capacitance is achieved, the equivalent caliber is increased, the height of the antenna section is reduced, and the height of the antenna is only 0.227 times of the low-frequency wavelength.
2. The spaceborne ultra-wideband low-profile lightweight array antenna as claimed in claim 1, wherein: m vertical polarization antenna subunits (3) positioned in the same row form a vertical polarization antenna subunit group in an integrated processing mode, and N vertical polarization antenna subunit groups are formed in total;
the vertical polarization antenna subunits (3) adopt Vivaldi type antennas, and the junction of two adjacent vertical polarization antenna subunits (3) is provided with a first notch (1) from top to bottom for integral assembly; in order to reduce the weight of the structure under the condition of not influencing the electrical performance of the antenna unit, two first trapezoidal holes (2) are symmetrically formed in each vertical polarization antenna subunit (3), and the height of each first trapezoidal hole (2) is not more than half of the height of the antenna unit; four sharp corners of the first trapezoid hole (2) are rounded, so that the influence of point discharge on the performance is reduced; meanwhile, the two first trapezoidal holes (2) symmetrically formed in the vertical polarization antenna subunit (3) can change the current distribution on the surface of the antenna, so that the effect of loading capacitance is realized, the profile of the antenna is reduced, and the low-profile characteristic of the antenna is realized.
3. The spaceborne ultra-wideband low-profile lightweight array antenna of claim 2, wherein: n horizontal polarization antenna subunits (5) positioned in the same row form a horizontal polarization antenna subunit group in an integrated processing mode, and M horizontal polarization antenna subunit groups are formed in total;
the horizontal polarization antenna subunits (5) adopt Vivaldi type antennas, and the junction of two adjacent horizontal polarization antenna subunits (5) is provided with a second notch (4) from bottom to top for integral assembly; in order to reduce the weight of the structure under the condition of not influencing the electrical performance of the antenna unit, two second trapezoidal holes (7) are symmetrically formed in each horizontal polarization antenna subunit (5), and the height of each second trapezoidal hole (7) is not more than half of the height of the antenna unit; four sharp corners of the second trapezoidal hole (7) are subjected to rounding treatment, so that the influence of point discharge on performance is reduced.
4. The spaceborne ultra-wideband low-profile lightweight array antenna according to claim 3, characterized in that: n vertical polarization subunit and M horizontal polarization subunit carry out the opposite insertion through second notch (4) and first notch (1), and horizontal polarization antenna subunit pegs graft on vertical polarization antenna subunit, is the L type and arranges, has realized the assembly of M N dual polarized antenna unit.
5. The spaceborne ultra-wideband low-profile lightweight array antenna of claim 4, wherein: the front face and the back face of the bottom of the antenna unit are additionally provided with bosses (9) for realizing widening, the bosses (9) are provided with feed holes (8), a coaxial feed mode is adopted, and each radiating subunit is fed by one SMP connector.
6. The spaceborne ultra-wideband low-profile lightweight array antenna of claim 4, wherein: because the antenna unit feeds power from the bottom, the SMP connector is connected to the bottom surface of the metal reflective floor (6) through the flange plate, and a power feeding inner core of the SMP connector penetrates through the metal reflective floor (6) upwards; when the antenna works, a circle of array elements at the edge are virtual elements, and 50-ohm matched load is loaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211624180.1A CN115775968A (en) | 2022-12-15 | 2022-12-15 | Satellite-borne ultra-wideband low-profile lightweight array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211624180.1A CN115775968A (en) | 2022-12-15 | 2022-12-15 | Satellite-borne ultra-wideband low-profile lightweight array antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115775968A true CN115775968A (en) | 2023-03-10 |
Family
ID=85392386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211624180.1A Pending CN115775968A (en) | 2022-12-15 | 2022-12-15 | Satellite-borne ultra-wideband low-profile lightweight array antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115775968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117832872A (en) * | 2024-01-17 | 2024-04-05 | 北京星英联微波科技有限责任公司 | Broadband total metal reflection unit, reflection array and reflection array antenna structure |
-
2022
- 2022-12-15 CN CN202211624180.1A patent/CN115775968A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117832872A (en) * | 2024-01-17 | 2024-04-05 | 北京星英联微波科技有限责任公司 | Broadband total metal reflection unit, reflection array and reflection array antenna structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11909121B2 (en) | Radiating elements having angled feed stalks and base station antennas including same | |
| US9099784B2 (en) | Array antenna of mobile terminal and implementing method thereof | |
| CN107275766B (en) | Broadband surface wave antenna based on non-uniform periodic structure loading | |
| CN112216980B (en) | Full-aperture strong-coupling ultra-wideband symmetric dipole phased-array antenna | |
| CN108598691B (en) | Broadband wide-angle scanning phased-array antenna based on flat-plate long-slot antenna | |
| US6967631B1 (en) | Multiple meander strip monopole antenna with broadband characteristic | |
| CN113300094A (en) | Waveguide antenna unit and waveguide array antenna | |
| CN115775968A (en) | Satellite-borne ultra-wideband low-profile lightweight array antenna | |
| CN113764871A (en) | Low-profile dual-band dual-polarization common-caliber conformal phased array antenna | |
| CN108808229B (en) | Stacking hybrid patch loop antenna for wireless energy-carrying communication | |
| CN111326855B (en) | FSS structure-based ultra-wide angle scanning octagonal patch antenna | |
| CN220341510U (en) | Broadband polarized tightly-coupled dipole transmission array antenna | |
| CN112072301A (en) | Dual-polarized low-profile broadband 5G base station antenna | |
| CN101227028A (en) | Double frequency slit antenna of substrate integrated waveguide | |
| CN201178135Y (en) | Bi-frequency slit antenna of substrate integrated waveguide | |
| CN216928922U (en) | Array antenna device with interference monitoring and positioning functions | |
| CN114566798A (en) | Low-profile dual-polarized strong-coupling ultra-wideband full-wing conformal dipole phased array antenna | |
| CN214589251U (en) | Novel low-coupling microstrip antenna with planar EBG structure | |
| CN114069260B (en) | Antenna system and electronic equipment comprising same | |
| CN213093372U (en) | Compact microstrip array antenna and radiation unit | |
| CN114709602B (en) | Antenna and communication equipment | |
| CN114421164B (en) | Low-profile magnetoelectric dipole antenna unit based on artificial surface plasmon and frequency scanning array | |
| CN221239806U (en) | PCB and power division network structure | |
| CN217114776U (en) | Base station antenna with small aperture and narrow beam | |
| CN219180766U (en) | Dual-polarized low-frequency radiating element and antenna using same |
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 |