CN115207617B - Mechanically reconfigurable panel antenna - Google Patents
Mechanically reconfigurable panel antenna Download PDFInfo
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- CN115207617B CN115207617B CN202210809237.9A CN202210809237A CN115207617B CN 115207617 B CN115207617 B CN 115207617B CN 202210809237 A CN202210809237 A CN 202210809237A CN 115207617 B CN115207617 B CN 115207617B
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- 239000002184 metal Substances 0.000 claims abstract description 51
- 239000000523 sample Substances 0.000 claims abstract description 36
- 230000005855 radiation Effects 0.000 claims abstract description 33
- 230000010287 polarization Effects 0.000 claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 4
- 238000003854 Surface Print Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Classifications
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/10—Telescopic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1235—Collapsible supports; Means for erecting a rigid antenna
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
- H01Q9/065—Microstrip dipole antennas
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a mechanically reconfigurable panel antenna, belonging to the technical field of antennas; the microstrip panel antenna comprises an antenna radiation layer, a foldable frame, a metal reflecting plate, a metal probe, a circular polarizer and a radio frequency cable. When the foldable frame is unfolded, the antenna is a linear polarization ultra-wideband antenna, and when the foldable frame is folded, the antenna is a circular polarization antenna. The invention has the characteristics of simple structure, small volume and low section, and can realize the switching of the ultra-wideband linear polarized antenna and the low section microstrip circular polarized antenna through different states of the folding frame so as to meet the application scene requirements of different communication systems.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a mechanically reconfigurable panel antenna.
Background
At present, in the use scene of the flat antenna, a low-profile flat antenna form is generally adopted, and the flat antenna mainly comprises antenna forms such as a microstrip slot antenna, a waveguide slot antenna, a microstrip planar printed oscillator antenna and the like.
Microstrip slot panel antennas cannot be used in broadband application scenarios due to the narrow bandwidth. Although the waveguide slot panel antenna has the characteristics of high efficiency, small loss, compact structure and the like, the antenna is based on the design of a waveguide system, and the waveguide size of the L-band and below frequency is relatively large, so that the antenna is large in size and heavy in weight, and the transportation and the portable use of the antenna are not facilitated. The microstrip planar printed element antenna has the advantages of lower cost, lighter weight, easy integration, diversified electrical properties and the like, and is widely applied to wireless communication systems.
The microstrip planar printed oscillator antenna is a structure based on a microwave dielectric plate printed oscillator, and has good broadband characteristics, but the antenna has good impedance characteristics when the distance between the antenna oscillator and a metal reflecting plate is 0.2lambda-0.25lambda, so that the section of the antenna is relatively high, and the defect is more obvious especially when the microstrip planar printed oscillator antenna is used in an L frequency band and a UHF frequency band.
Disclosure of Invention
According to the above-mentioned technical problems, the present invention provides a mechanically reconfigurable panel antenna, whose storage state is switched to a broadband, low-gain, circularly polarized antenna. The practicality of antenna has been increased, antenna availability factor has been improved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a mechanically reconfigurable panel antenna comprises an antenna radiation layer, a metal reflecting plate, a metal probe set, a circular polarizer and a radio frequency cable; also comprises a folding frame; the folding frame comprises an upper surrounding frame, a lower surrounding frame and folding supporting legs connected between the upper surrounding frame and the lower surrounding frame; the antenna radiation layer comprises a double-sided microwave dielectric plate serving as a main body, the double-sided microwave dielectric plate is positioned in the upper surrounding frame, a feed network and printing vibrators are arranged on the upper surface of the double-sided microwave dielectric plate, wherein the feed network is a two-in-one feed network, and the printing vibrators connected with the feed network are arranged on two sides of the tail end of a branch of the feed network; the middle position of the printing vibrator is provided with a rectangular ring groove;
the metal reflecting plate is positioned in the lower surrounding frame; the metal probe group comprises 4 inverted L-shaped metal probes which are rotationally symmetrical about the center, the adjacent metal probes are orthogonally arranged, and the 4 metal probes are respectively positioned under the corresponding printing vibrators; the lower end of the inverted L-shaped probe penetrates through a round hole of the metal reflecting plate to be connected with the circular polarizer;
the feed network is a different-plane parallel double-line network; the printing vibrator is a different-surface printing vibrator; the inner core and the outer skin at the upper end of the radio frequency cable are respectively complexed with the feed network with different surfaces to form end welding; when the folding supporting legs of the folding frame are in an unfolding state, the distance between the antenna radiation layer and the metal reflecting plate is the height of the dipole antenna structure of the reflecting plate, and the printed dipole is used as a part of the linear polarization ultra-wideband high-gain antenna for radiation; when the folding supporting leg of the folding frame is in a storage state, the distance between the antenna radiation layer and the metal reflecting plate is the height of the air microstrip antenna, the square patch in the rectangular ring groove is used as a part of the low-profile air microstrip circularly polarized antenna for radiation, and the square patch is coupled and fed through the inverted L-shaped metal probe, so that excitation of the square patch is realized.
Further, the printing vibrators on the upper surface and the lower surface of the double-sided microwave dielectric plate are of complementary structures.
Furthermore, the feeding networks on the upper surface and the lower surface of the double-sided microwave dielectric plate are of parallel structures, and a feeding network of a parallel double-line structure is formed.
Further, each folding supporting leg comprises two supporting rods and a locking screw; when the two support rods are in the same straight line, the locking screw fixes the two support rods to be in an unfolding state; when the two support rods are parallel and are positioned on the same vertical plane, the two support rods are used as a storage state.
Further, in the storage state, the adjacent surfaces of the two support rods are mutually buckled and locked.
The beneficial effects generated by adopting the technical scheme are as follows:
1. the microstrip flat antenna is a low-profile ultra-wideband high-gain array antenna, and has a lower height than the conventional microstrip flat antenna; and it is necessary to have a microstrip patch antenna with a simple structure, excellent broadband characteristics, low profile, easy storage and transportation, and portability.
When the microstrip panel antenna is in the collection state, the microstrip panel antenna can be switched to another antenna application mode, so that the application scene of the antenna is improved, and the microstrip panel antenna has more practical significance.
2. The high-gain linear polarization antenna has high gain and high signal strength, can enable the antenna to precisely face the target direction for communication, and has long acting distance and high communication quality.
3. When the antenna is in a collection state, the antenna can be switched to a broadband low-gain circularly polarized antenna, so that the practicability of the antenna is improved, and the service efficiency of the antenna is improved.
4. The collectable cube frame has simple structure and greatly reduces the collection space of the antenna;
5. the operation is convenient and the reliability is high;
6. the foldable cube frame enables quick deployment and stowage of the antenna.
7. When the antenna is stored, the cube frame is stored and firmly locked, so that the storage and transportation are convenient; when the antenna is unfolded for use, the antenna can be ensured to be stably kept in a vertical working state.
Drawings
FIG. 1 is an overall view of an expanded state of an embodiment of the present invention;
FIG. 2 is an overall view of a collection state according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a snap-lock structure of the two support bars in fig. 2.
In the figure: 1. the feeding network, 2, square paster, 3, rectangular ring groove, 4, printing vibrator, 5, folding landing leg, 6, radio frequency cable, 7, circular polarizer, 8, metal probe, 9, metal reflecting plate, 10, double-sided microwave dielectric plate, 5-1, upper supporting rod, 5-2, lower supporting rod.
Detailed Description
The invention will be further described with reference to the drawings and detailed description.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
A mechanically reconfigurable panel antenna comprises an antenna radiation layer, a metal reflecting plate, a metal probe set, a circular polarizer and a radio frequency cable; also comprises a folding frame; the folding frame comprises an upper surrounding frame, a lower surrounding frame and folding supporting legs connected between the upper surrounding frame and the lower surrounding frame; the antenna radiation layer comprises a double-sided microwave dielectric plate serving as a main body, the double-sided microwave dielectric plate is positioned in the upper surrounding frame, a feed network and printing vibrators are arranged on the upper surface of the double-sided microwave dielectric plate, wherein the feed network is a two-in-one feed network, and the printing vibrators connected with the feed network are arranged on two sides of the tail end of a branch of the feed network; the middle position of the printing vibrator is provided with a rectangular ring groove;
the metal reflecting plate is positioned in the lower surrounding frame; the metal probe group comprises 4 inverted L-shaped metal probes which are rotationally symmetrical about the center, the adjacent metal probes are orthogonally arranged, and the 4 metal probes are respectively positioned under the corresponding printing vibrators; the lower end of the inverted L-shaped probe penetrates through a round hole of the metal reflecting plate to be connected with the circular polarizer;
the feed network is a different-plane parallel double-line network; the printing vibrator is a different-surface printing vibrator; the inner core and the outer skin at the upper end of the radio frequency cable are respectively complexed with the feed network with different surfaces to form end welding; when the folding supporting legs of the folding frame are in an unfolding state, the distance between the antenna radiation layer and the metal reflecting plate is the height of the dipole antenna structure of the reflecting plate, and the printed dipole is used as a part of the linear polarization ultra-wideband high-gain antenna for radiation; when the folding supporting leg of the folding frame is in a storage state, the distance between the antenna radiation layer and the metal reflecting plate is the height of the air microstrip antenna, the square patch in the rectangular ring groove is used as a part of the low-profile air microstrip circularly polarized antenna for radiation, and the square patch is coupled and fed through the inverted L-shaped metal probe, so that excitation of the square patch is realized.
Further, the printing vibrators on the upper surface and the lower surface of the double-sided microwave dielectric plate are of complementary structures.
Furthermore, the feeding networks on the upper surface and the lower surface of the double-sided microwave dielectric plate are of parallel structures, and a feeding network of a parallel double-line structure is formed.
Further, each folding supporting leg comprises two supporting rods and a locking screw; when the two support rods are in the same straight line, the locking screw fixes the two support rods to be in an unfolding state; when the two support rods are parallel and are positioned on the same vertical plane, the two support rods are used as a storage state.
Further, in the storage state, the adjacent surfaces of the two support rods are mutually buckled and locked.
The following is a more specific example:
referring to fig. 1 to 3, the antenna of the present embodiment is a microstrip patch antenna comprising a radiation layer, a foldable frame, a metal reflecting plate, a metal probe, a circular polarizer, and a radio frequency cable. When the antenna is opened, the antenna is a low-profile ultra-wideband high-gain linear polarization antenna; when the antenna is collected, the antenna is a broadband low-gain circularly polarized antenna.
The high-gain linear polarization antenna radiation layer adopts a double-sided microwave dielectric plate, and M multiplied by N printed antenna element units and a feed synthesis network are printed on the upper surface and the lower surface of the microwave dielectric plate. The printed antenna oscillator is a different-surface printed oscillator, a rectangular annular groove is formed in the middle of the printed oscillator, and the feeding synthesis network adopts a different-surface parallel double-line network.
The low-gain circularly polarized antenna plays a main role of radiation through a square metal sheet formed by a rectangular annular groove arranged in the middle of a printed oscillator of the high-gain linearly polarized antenna, and is fed through coupling of 4 inverted L-shaped metal probes.
The high-gain linear polarization antenna is welded with the upper side and the lower side of the feed synthesis network through the inner core and the outer skin at the upper end of the radio frequency cable. The low-gain circularly polarized antenna is connected with the circularly polarizer through the round hole of the metal reflecting plate by the lower end of the inverted L-shaped probe.
The foldable cube frame consists of 2 rectangular metal surrounding frames and 4 folding supporting legs. The connection part of the metal frame and the folding supporting leg is provided with a rotating mechanism, the folding arm supporting leg consists of two supporting rods, when the two supporting rods are in a straight line, the fixing screws are locked, the contact friction force of the two supporting rods is increased, the antenna state is fixed, and at the moment, the antenna is in an unfolding state, and the antenna radiation function is realized when the antenna is unfolded; after the screw is screwed down, the supporting rod is pushed inwards, the antenna is lowered to the designated height, the upper supporting rod is pushed to be inserted from one side of the lower supporting rod, and at the moment, the antenna is in a storage state and is convenient to store and carry. The antenna realizes a storage state and an unfolding state through the folding arm metal rod.
The invention briefly works on the principle:
the antenna is composed of a radiation layer, a foldable supporting frame, a metal reflecting plate and an inverted L-shaped metal probe fixed on the metal reflecting plate. The antenna radiation layer comprises printed vibrators and a feed network, the printed vibrators on the upper side and the lower side of the radiation layer are of complementary structures, a dipole antenna is formed, and electromagnetic wave radiation is achieved. The upper and lower side networks of the radiation layer are parallel structures, and form a feed network with a parallel double-line structure, so that feed and synthesis of the printed dipole antenna array are realized. A rectangular annular groove is formed in the middle of the printing vibrator, and the bandwidth of the antenna can be expanded. An inverted L-shaped probe is arranged below each printing vibrator, the L-shaped probes are fixed on the metal reflecting plate, the lower ends of the L-shaped probes penetrate through holes in the metal reflecting plate and are connected with the circular polarizer, every 4 probes are in a group, the probes are arranged around the central axes of the 4 probes in a rotating mode, and adjacent probes are placed in an orthogonal mode. When the foldable support frame is unfolded, the distance between the antenna radiation layer and the floor meets the height of the reflecting plate dipole antenna structure, the printed dipole plays a main radiation role, and the antenna is a linear polarization ultra-wideband high-gain antenna. When the foldable frame is stored, the distance between the radiation layer and the floor meets the height of the air microstrip antenna, the antenna is a low-profile air microstrip circularly polarized antenna, and the square patch in the middle of the dipole of the radiation layer plays a main radiation role; feeding the square patch lotus by the L-shaped probe to realize excitation of the square patch; the four direction patches are in a group to form a quaternary microstrip circularly polarized antenna, the L-shaped probes are equal in amplitude through a quarter circularly polarized network, and the branch phases are sequentially different by 90 degrees for feeding.
The mechanically reconfigurable planar antenna has the characteristics of simple structure, small volume and low section, and can realize the switching of the ultra-wideband linear polarized antenna and the low-section microstrip circular polarized antenna through different states of the folding frame so as to meet the application scene requirements of different communication systems.
Claims (5)
1. A mechanically reconfigurable panel antenna comprises an antenna radiation layer, a metal reflecting plate, a metal probe set, a circular polarizer and a radio frequency cable; the folding frame is characterized by further comprising a folding frame; the folding frame comprises an upper surrounding frame, a lower surrounding frame and folding supporting legs connected between the upper surrounding frame and the lower surrounding frame; the antenna radiation layer comprises a double-sided microwave dielectric plate serving as a main body, the double-sided microwave dielectric plate is positioned in the upper surrounding frame, a feed network and printing vibrators are arranged on the upper surface of the double-sided microwave dielectric plate, wherein the feed network is a two-in-one feed network, and the printing vibrators connected with the feed network are arranged on two sides of the tail end of a branch of the feed network; the middle position of the printing vibrator is provided with a rectangular ring groove;
the metal reflecting plate is positioned in the lower surrounding frame; the metal probe group comprises 4 inverted L-shaped metal probes which are rotationally symmetrical about the center, the adjacent metal probes are orthogonally arranged, and the 4 metal probes are respectively positioned under the corresponding printing vibrators; the lower end of the inverted L-shaped probe penetrates through a round hole of the metal reflecting plate to be connected with the circular polarizer;
the feed network is a different-plane parallel double-line network; the printing vibrator is a different-surface printing vibrator; the inner core and the outer skin at the upper end of the radio frequency cable are respectively complexed with the feed network with different surfaces to form end welding;
when the folding supporting legs of the folding frame are in an unfolding state, the distance between the antenna radiation layer and the metal reflecting plate is the height of the dipole antenna structure of the reflecting plate, and the printed dipole is used as a part of the linear polarization ultra-wideband high-gain antenna for radiation; when the folding supporting leg of the folding frame is in a storage state, the distance between the antenna radiation layer and the metal reflecting plate is the height of the air microstrip antenna, the square patch in the rectangular ring groove is used as a part of the low-profile air microstrip circularly polarized antenna for radiation, and the square patch is coupled and fed through the inverted L-shaped metal probe, so that excitation of the square patch is realized.
2. The mechanically reconfigurable planar antenna of claim 1, wherein printed elements on the upper and lower surfaces of the double sided microwave dielectric plate are of complementary configuration.
3. The mechanically reconfigurable planar antenna of claim 1, wherein the feeding networks on the upper and lower surfaces of the double-sided microwave dielectric plate are parallel structures, forming a parallel dual-line feeding network.
4. A mechanically reconfigurable panel antenna according to claim 1, wherein each folded leg comprises two support bars and a locking screw; when the two support rods are in the same straight line, the locking screw fixes the two support rods to be in an unfolding state; when the two support rods are parallel and are positioned on the same vertical plane, the two support rods are used as a storage state.
5. The mechanically reconfigurable panel antenna of claim 4, wherein in the stowed position, adjacent faces of the support poles are snap-locked to one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210809237.9A CN115207617B (en) | 2022-07-11 | 2022-07-11 | Mechanically reconfigurable panel antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210809237.9A CN115207617B (en) | 2022-07-11 | 2022-07-11 | Mechanically reconfigurable panel antenna |
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| Publication Number | Publication Date |
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| CN115207617A CN115207617A (en) | 2022-10-18 |
| CN115207617B true CN115207617B (en) | 2023-12-01 |
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| CN202210809237.9A Active CN115207617B (en) | 2022-07-11 | 2022-07-11 | Mechanically reconfigurable panel antenna |
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| CN115207617A (en) | 2022-10-18 |
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