CN113054435B - Low-profile slot antenna based on tightly-coupled radiation and mounting device thereof - Google Patents
Low-profile slot antenna based on tightly-coupled radiation and mounting device thereof Download PDFInfo
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- CN113054435B CN113054435B CN202110300179.2A CN202110300179A CN113054435B CN 113054435 B CN113054435 B CN 113054435B CN 202110300179 A CN202110300179 A CN 202110300179A CN 113054435 B CN113054435 B CN 113054435B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
Abstract
The invention discloses a low-profile slot antenna based on tightly coupled radiation and a mounting device thereof. The low-profile slot antenna comprises antenna units and an array formed by the antenna units, wherein the array form comprises a single antenna unit parallel arrangement mode or a coplanar arrangement combination mode, each radiating unit is fed by a microstrip line tightly attached to a metal base plate in an antenna box, electromagnetic wave leakage radiation is carried out on a slot above the radiating unit, the impedance matching of an antenna feeder line and a port is realized by changing the length and the width of the radiating slot, the isolation degree adjustment of the antenna is realized at the same time, different radiation performances are realized by setting dielectric bodies with different dielectric constants in the antenna, microstrip lines in the antenna are alternately arranged to keep a certain gap, and coupling feed is realized.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to a low-profile slot antenna based on tightly coupled radiation and a mounting device thereof.
Background
The antenna is a key component of a signal transmitting and receiving device in a communication system, and the antenna with excellent radiation and receiving performance can improve the capacity of the whole communication system. Based on the requirements of current communication systems, large bandwidth, more compact radiating elements are required. The current design scheme usually adopts the combination of multi-band antennas to realize the effect of large bandwidth, however, the design mode easily faces the mutual coupling problem of the antennas, and the antenna designed by the method has overlarge size and overhigh cost. In order to solve the problem of electromagnetic wave radiation coupling in a communication system, an antenna having a low profile, a small size, and a low side lobe has to be developed.
The broadband array antenna based on the mutual coupling effect can break through the bandwidth of the existing antenna array antenna, and is not only limited by array elements. A wide frequency band is realized by utilizing a cross effect between the antenna elements. The research on the novel antenna structure has important engineering significance for obtaining the technical indexes of the antenna with higher performance. Meanwhile, the low-profile structure antenna can be tightly attached to the surface of an object, and common design is achieved.
Disclosure of Invention
The invention aims to provide a low-profile slot antenna based on tightly coupled radiation and a mounting device thereof.
The purpose of the invention can be realized by the following technical scheme:
the low-profile slot antenna based on tightly coupled radiation is characterized in that a feed network of the low-profile slot antenna is used for reducing the arrangement mode of a metal cavity, the internal medium of the metal cavity and the forming mode of a radiation unit of the antenna, wherein the metal cavity is used for reducing electromagnetic wave interference.
The basic structure of the low-profile antenna comprises a microstrip line, a dielectric plate, a metal cavity, a radiation slot, a metal cavity and a dielectric body between the microstrip and the feeder line.
The electromagnetic wave feeding mode utilizes a microstrip line mode to excite electromagnetic waves, the impedance matching and the phase of the antenna are realized through the microstrip line wiring mode and the width adjustment in the metal cavity, the feeding point is arranged on the side edge inside the metal cavity, the reasonable position arrangement of the antenna units under the array situation is realized through adjusting the position of the feeding point, and the adjustment of the position of the feeding point is convenient for external feeding wiring under the array situation of the antenna units.
When a plurality of microstrip lines in the cavity are crossed and wired, wiring is carried out in a non-contact mode.
Furthermore, the cross routing positions and the cross positions between the microstrip lines are arranged in a cutting or overlapping mode, the electromagnetic wave coupling degree between the routing lines is adjusted by adjusting the distance and the width of the microstrip lines and placing a dielectric plate between the microstrip lines, and the adjustment of the impedance of the feeder line and the adjustment of the electromagnetic wave distribution in the metal cavity are realized by strong coupling.
Furthermore, a distance is arranged between the microstrip line and the inner bottom plate of the metal cavity, the distance between the microstrip line and the inner bottom plate of the metal cavity is adjusted according to the radiation of the antenna, the capacitance or the inductance generated by the antenna is counteracted, and the adjustment of the whole impedance of the antenna is realized.
Furthermore, the outer surface of the metal cavity is slotted or dug to realize linear polarization, circular polarization electromagnetic wave radiation and radiation patterns in different forms, and the cross-shaped slot realizes equivalent dipole antenna radiation effect and dual polarization radiation at the same time. The radiation effect with large bandwidth and high gain is realized by utilizing the tight coupling array principle.
Furthermore, the side surface of the metal cavity is provided with holes to realize lateral radiation of electromagnetic waves, in an array state, the electromagnetic wave radiation among the array elements is utilized to form a capacitance or inductance effect among the antenna units, so that the working bandwidth of the array antenna is widened, the antenna units of the array antenna are dipole units, the dipole units are inductive at low frequency and capacitive at high frequency and are capacitively offset with the floor at low frequency, and the frequency bandwidth is widened.
Furthermore, a metal unit is arranged above the antenna unit, an impedance structure is formed between the metal unit and the radiation gap for adjusting the standing-wave ratio of the antenna unit and adjusting the radiation pattern and gain of the antenna, the size and the distance of the metal unit above the antenna unit realize the adjustment of the overall coupling effect between the metal layers and between the antenna units, the antenna units are combined into an antenna unit array to form radiation, and the coupling effect of the radiation units in the antenna unit array is reduced by using the metal cavity.
Furthermore, the slotting of the metal cavity is equivalent to the radiation of a microstrip metal patch, the adjustment of the electromagnetic wave distribution in the cavity is realized by adjusting the height and the size of the metal cavity, the radiation polarization direction of the antenna is effectively controlled by adjusting the cross angle of a radiation gap, the circular polarization of an antenna unit is realized by adjusting the shape of the gap, the elliptical planned radiation effect is realized, and then the required antenna unit array is realized.
Furthermore, the feeder is located inside the metal cavity to achieve extremely low electromagnetic wave distribution on the back of the antenna, reduce the back lobe of the antenna, and form an antenna array with low back lobe in an array state.
Installation device based on tight coupling radiation's low section slot antenna, installation device includes the mounting, is equipped with the driving piece on the mounting, is equipped with support piece on the mounting, is equipped with the rotation piece of array distribution on the support piece, is equipped with the locating part on the rotation piece, is equipped with the installed part on the rotation piece, is equipped with the fastener on the installed part, is equipped with the pneumatic cylinder on the support piece, and the output shaft fastening connection of pneumatic cylinder has the regulating part.
The mounting includes the mount, rotates on the mount and is equipped with the connecting piece, is equipped with the bearing plate on the connecting piece, is equipped with the guide post on the bearing plate.
The driving piece comprises a motor, an output shaft of the motor penetrates through the fixing frame and is fixedly connected with a first connecting rod, a second connecting rod is rotatably arranged on the first connecting rod, a third connecting rod is rotatably arranged on the second connecting rod and is fixedly connected with the connecting piece, and the motor is fixedly connected with the fixing frame.
The support piece comprises a first support frame, a second support frame is arranged on the first support frame, connecting blocks are distributed on the second support frame in an array mode, the first support frame is connected with the bearing plate in a fastening mode, and the hydraulic cylinder is connected with the second support frame in a fastening mode.
Further, the rotating part comprises a rotating plate, both sides of the rotating plate are provided with a baffle, a first slide rail is arranged on the baffle, a second slide rail is arranged on the rotating plate, a limiting groove is formed in the rotating plate, a connecting frame is arranged on the rotating plate, a positioning plate is arranged on the rotating plate, and the connecting frame is connected with the connecting block in a rotating mode.
The locating part includes the slider, and fastening connection has first draw-in groove on the slider, and it is equipped with the second draw-in groove to slide in the first draw-in groove, and it is equipped with the bracing piece to slide in the second draw-in groove, is equipped with the limiting plate on the bracing piece, is equipped with first perforation hole on the limiting plate, and the limiting plate is spacing with the spacing groove cooperation, and the locating part passes through slider and first slide rail cooperation and rotates a sliding connection.
The installed part includes the mounting panel, be equipped with the mounting panel on the mounting panel, be equipped with the second through hole on the mounting panel, be equipped with the third through hole on the mounting panel, the below of mounting panel is equipped with the spout, be equipped with array distribution's stopper on the mounting panel, the both sides of stopper all are equipped with the cooperation groove, the intercommunication is equipped with array distribution's constant head tank on the cooperation groove, be equipped with array distribution's screw hole on the stopper, the installed part passes through spout and second slide rail cooperation and rotates a sliding connection, limiting plate and third through hole cooperation, the screw rod passes second through hole and first through hole and is connected installed part and locating part fastening.
The fastener includes the clamp plate, is equipped with the fourth through hole on the clamp plate, and the below of clamp plate is equipped with the dog, and the slope is equipped with the extrusion piece on the dog, and the below of clamp plate is equipped with the locating piece, and locating piece and constant head tank cooperation location, bolt pass fourth through hole and screw hole screw-thread fit with fastener and installed part fastening connection.
The adjusting part comprises an adjusting column, a guide hole is formed in the adjusting column, a groove is formed in the adjusting column, an adjusting rod is arranged in the groove in a rotating mode and is connected with the rotating plate in a rotating mode, the adjusting part is connected with the fixing part in a sliding mode through the guide hole and the guide column in a matching mode, and an output shaft of the hydraulic cylinder penetrates through the second supporting frame and is connected with the guide column in a fastening mode.
The invention has the beneficial effects that:
1. the low-profile slot antenna has the characteristics of ultra wide band, large scanning angle and the like, can realize extremely low profile structural design under the conditions of controllable working bandwidth and gain and high isolation, limits the electromagnetic waves of antenna units in corresponding spaces by introducing a close arrangement mode of an array, eliminates the interference problem caused by the electromagnetic wave radiation among the unit antennas, and further realizes high isolation among ports;
2. the low-profile slot antenna has the characteristics of small volume, light weight, easy processing and low manufacturing cost;
3. the mounting device of the low-profile slot antenna can adjust the transmitted or received signals of the antenna in multiple angles by rotating the rotating piece, improves the accuracy of receiving and transmitting the signals, and is flexible, convenient to disassemble and convenient to maintain.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the antenna feed distribution and peripheral metal cavity of the present invention;
FIG. 2 is a schematic diagram of the antenna feed distribution and slot above the metal cavity of the present invention;
FIG. 3 is a schematic diagram of an array of antenna elements of the present invention;
FIG. 4 is a schematic diagram of the operating frequency band of the antenna of the present invention;
FIG. 5 is a schematic diagram illustrating the gain distribution of a specific frequency point in an omnidirectional angle according to the present invention;
FIG. 6 is a schematic diagram of the gain of the inventive unit over the entire operating frequency band;
FIG. 7 is a schematic view of the antenna mounting apparatus of the present invention;
FIG. 8 is an enlarged view of the structure at A in FIG. 7 according to the present invention;
FIG. 9 is a schematic view of a portion of the antenna mounting apparatus of the present invention;
FIG. 10 is a schematic view of a portion of the antenna mounting apparatus of the present invention;
FIG. 11 is an enlarged view of FIG. 10 at B in accordance with the present invention;
FIG. 12 is an enlarged view of FIG. 11 at C in accordance with the present invention;
FIG. 13 is a schematic view of a portion of the antenna mounting apparatus of the present invention;
FIG. 14 is an enlarged view of FIG. 13 at D in accordance with the present invention;
FIG. 15 is a schematic view of a fastener construction of the present invention;
fig. 16 is a schematic view showing a partial structure of the antenna mounting device of the present invention.
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 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.
The low-profile slot antenna based on tightly coupled radiation comprises a microstrip line, a dielectric plate, a metal cavity, a radiation slot, a metal cavity and a dielectric body between the microstrip feed lines.
S1, as shown in figure 4, the working frequency band of the antenna is 1.7GHz-2.7GHz, the antenna belongs to an ultra-wideband antenna, and by arranging the ultra-wideband antenna, the multi-antenna arrangement in a complex antenna combination is replaced, so that the number of the antennas is effectively reduced, and the overall geometric size of the antenna is reduced.
And S2, as shown in fig. 2 and 3, the radiation direction of the antenna is perpendicular to the metal base plate, and the single antenna unit radiates gain along the direction from the metal base plate to the upper slot, as shown in fig. 5 and 6.
S3, the size of the metal cavity in this embodiment is a × b × h =10 × 100 × 100mm, and the thickness of the metal cavity is 1mm.
And S4, as described in the step S3, slotting the upper surface of the metal cavity along the plane a x b, radiating electromagnetic waves in the cavity through the upper slotting to form a certain lobe directional pattern, wherein the array antenna adopts the same periodic unit structure, each antenna unit is provided with two slotting, and the size of the slot is 5 x 50 x 1mm.
And S5, as stated in the step S4, the slots on the upper surface of the metal cavity are of a crossed cross line structure, each slot forms a magnetic pole sub-radiation unit, the radiation effect of the slotted antenna is the same as that of the electric dipole antenna, and the cross-shaped slots realize the mutually vertical polarization radiation effect of the antennas.
S6, microstrip lines in the metal cavity are wired, for the two crossed gaps, microstrip line feeding with the same length is adopted, electromagnetic wave radiation with the same phase is formed, and electromagnetic wave radiation effects with different phases are achieved by controlling the length of the microstrip lines.
And S7, according to the description in the S6, radiation of different direction angles is realized by utilizing routing of different feeder lines, and meanwhile, radiation adjustment is realized, so that the purpose of reducing side lobes and back lobes is achieved.
S8, adjusting the routing of the feeder line, and simultaneously changing the electromagnetic wave mode distribution in the metal cavity to achieve the required antenna polarization mode and electromagnetic wave radiation lobe distribution.
And S9, as shown in fig. 1 and fig. 3, placing a dielectric block at the intersection of the metal microstrip lines or performing staggered routing to realize electromagnetic wave coupling between the microstrip lines, wherein a dielectric block with the size of 5 × 10 × 1mm and the dielectric constant of 2.65 is adopted in the embodiment.
S10, as shown in fig. 3, two metal patches are adopted above the radiation slot, the size of the lower metal patch is 40 × 40 × 0.5mm, and the size of the lower patch is 30 × 30 × 0.5mm, in this way, the radiation electromagnetic wave directional diagram of the antenna unit is adjusted, and the overall impedance matching condition of the antenna is adjusted.
And S11, as shown in figure 1, arranging a metal baffle around the antenna unit, adjusting a side lobe and a back lobe directional diagram radiated by the antenna unit, and adjusting the electromagnetic wave coupling effect between the antenna units, wherein the height of the metal side baffle can be adjusted.
S12, based on the impedance formula among the antenna units,
the adjustment of the electromagnetic wave coupling condition between the antenna units is realized, and the strong coupling of the electromagnetic wave is utilized to widen the bandwidth, Z, of the array antenna in Is the total apparent impedance, X, between the antenna elements A0 Indicating the applied impedance introduced by a set of conditions,
representing the impedance as seen from the antenna element layer to the transmission line side,
which is the impedance seen from the antenna element layer to the other outer side.
S13, as shown in fig. 3, in the case of the antenna unit array, the side wall of the metal cavity is slotted or holed in a certain form, in this embodiment, an H-shaped hole is adopted in the side wall, the height of the H-shaped slot is 12mm, the distance of the transverse slot connecting the two vertical slots is 4mm, the thickness of the slot is consistent with the wall of the metal cavity in this embodiment, and is 1mm, so as to achieve conduction between the internal medium of the metal cavity and the external air, and ensure that the electromagnetic wave inside the metal cavity can be excited.
S14, in this embodiment, six metal slots are respectively used on one side of each antenna unit to perform side leakage, and electromagnetic waves on the side of the metal cavity are radiated through the slots and are coupled with adjacent antenna units to form a certain electromagnetic impedance effect, so that the antenna bandwidth is widened by using the tight coupling principle.
S15, placing a metal rod and other capacitive or inductive components between the antenna units to realize impedance adjustment, and further adjusting the coupling condition of electromagnetic waves and adjusting the coupling condition of the electromagnetic waves between the antenna units.
Installation device based on tight coupling radiation's low section slot antenna, installation device include mounting 1, as shown in fig. 7, fig. 8, be equipped with driving piece 2 on mounting 1, be equipped with support piece 3 on mounting 1, the last rotation piece 4 that is equipped with array distribution of support piece 3 is equipped with locating part 5 on rotating piece 4, be equipped with installed part 6 on rotating piece 4, be equipped with fastener 7 on installed part 6, be equipped with pneumatic cylinder 8 on support piece 3, the output shaft fastening connection of pneumatic cylinder 8 has regulating part 9.
The fixing member 1 includes a fixing frame 11, as shown in fig. 9, a connecting member 12 is rotatably disposed on the fixing frame 11, a bearing plate 13 is disposed on the connecting member 12, and a guide post 14 is disposed on the bearing plate 13.
The driving member 2 includes a motor 21, as shown in fig. 9, an output shaft of the motor 21 penetrates through the fixing frame 11 and is tightly connected with a first connecting rod 22, a second connecting rod 23 is rotatably arranged on the first connecting rod 22, a third connecting rod 24 is rotatably arranged on the second connecting rod 23, the third connecting rod 24 is tightly connected with the connecting member 12, and the motor 21 is tightly connected with the fixing frame 11.
The supporting member 3 includes a first supporting frame 31, as shown in fig. 10 and fig. 11, a second supporting frame 32 is provided on the first supporting frame 31, connecting blocks 33 are distributed on the second supporting frame 32 in an array manner, the first supporting frame 31 is fastened to the bearing plate 13, and the hydraulic cylinder 8 is fastened to the second supporting frame 32.
The rotating member 4 includes a rotating plate 41, as shown in fig. 11 and 12, baffle plates 42 are disposed on two sides of the rotating plate 41, a first slide rail 43 is disposed on the baffle plate 42, a second slide rail 44 is disposed on the rotating plate 41, a limiting groove 45 is disposed on the rotating plate 41, a connecting frame 46 is disposed on the rotating plate 41, a positioning plate 47 is disposed on the rotating plate 41, and the connecting frame 46 is rotatably connected to the connecting block 33.
The limiting member 5 includes a sliding block 51, as shown in fig. 11 and 12, a first engaging groove 52 is fixedly connected to the sliding block 51, a second engaging groove 53 is slidably disposed in the first engaging groove 52, a supporting rod 54 is slidably disposed in the second engaging groove 53, a limiting plate 55 is disposed on the supporting rod 54, a first through hole 56 is disposed on the limiting plate 55, the limiting plate 55 is matched with the limiting groove 45 for limiting, and the limiting member 5 is matched with the rotating member 4 for sliding connection through the sliding block 51 and the first sliding rail 43.
The fastening piece 7 comprises a pressing plate 71, as shown in fig. 15, a fourth through hole 72 is formed in the pressing plate 71, a stopper 73 is arranged below the pressing plate 71, an extrusion block 74 is obliquely arranged on the stopper 73, a positioning block 76 is arranged below the pressing plate 71, the positioning block 76 is matched and positioned with the positioning groove 68, and a bolt penetrates through the fourth through hole 72 and is in threaded fit with the threaded hole 69 to fasten and connect the fastening piece 7 and the mounting piece 6.
The adjusting part 9 includes an adjusting post 91, as shown in fig. 16, a guiding hole 92 is provided on the adjusting post 91, a groove 93 is provided on the adjusting post 91, an adjusting rod 94 is rotatably provided in the groove 93, the adjusting rod 94 is rotatably connected with the rotating plate 41, the adjusting part 9 is slidably connected with the fixing part 1 through the matching of the guiding hole 92 and the guiding post 14, and an output shaft of the hydraulic cylinder 8 passes through the second supporting frame 32 and is fixedly connected with the guiding post 14.
When the antenna is used, the metal cavity of the antenna is pushed into the matching groove 67 between the limiting blocks 66, the positioning block 76 and the positioning groove 68 are matched and positioned, the extrusion block 74 compresses the metal cavity and fixes the fastening piece 7 on the limiting block 66 through the bolt, the above operations are repeated, the metal cavity of the antenna is pushed and fixed again to form an antenna array, the mounting piece 6 is pushed into the rotating piece 4, the limiting plate 55 penetrates through the third through hole 64 to be matched and positioned with the limiting groove 45, the screw penetrates through the second through hole 63 and the first through hole 56 to fixedly connect the mounting piece 6 with the limiting piece 5, the output shaft of the hydraulic cylinder 8 contracts to drive the adjusting column 91 to move upwards to drive the adjusting rod 94 to rotate and push the rotating piece 4 to rotate, the driving piece 2 drives the first connecting rod 22, the second connecting rod 23 and the third connecting rod 24 to rotate, and further drives the bearing plate 13 and the antenna array to rotate, and adjust the transmitting and receiving angles of the antenna array signals.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The low-profile slot antenna based on tightly coupled radiation is characterized in that a feed network of the low-profile antenna is used for reducing the arrangement mode of a metal cavity of electromagnetic wave interference, the internal medium of the metal cavity and the forming mode of a radiation unit of the antenna;
the basic structure of the low-profile antenna comprises a microstrip line, a dielectric plate, a metal cavity, a radiation gap, a metal cavity and a dielectric body between the microstrip lines;
the electromagnetic wave feed mode utilizes a microstrip line form to excite electromagnetic waves, and realizes the impedance matching and phase adjustment of the antenna through a microstrip line routing mode and width adjustment in the metal cavity;
when a plurality of microstrip lines in the cavity are crossed and wired, wiring is carried out in a non-contact mode;
the side surface of the metal cavity is provided with a hole to realize the lateral radiation of electromagnetic waves, and in an array state, the electromagnetic wave radiation among array elements is utilized to form the capacitance or inductance effect among antenna units, so that the working bandwidth of the array antenna is widened;
the antenna units are combined into an antenna unit array to form radiation, and the coupling effect of the radiation units in the antenna unit array is reduced by utilizing the metal cavity.
2. The low-profile slot antenna based on tightly-coupled radiation as claimed in claim 1, wherein the cross-trace portion between the microstrip lines is adjusted in electromagnetic wave coupling degree between the traces by adjusting the distance and width of the microstrip lines and by placing a dielectric plate between the microstrip lines, and the adjustment of the impedance of the feed line and the adjustment of the electromagnetic wave distribution in the metal cavity are achieved by strong coupling.
3. The low-profile slot antenna based on tightly-coupled radiation as claimed in claim 1, wherein a gap is provided between the microstrip line and the inner bottom plate of the metal cavity, and the distance between the microstrip line and the inner bottom plate of the metal cavity is adjusted according to the radiation of the antenna to counteract the capacitance or inductance generated by the antenna itself, thereby realizing the adjustment of the overall impedance of the antenna.
4. The tightly-coupled radiation-based low-profile slot antenna of claim 1, wherein the outer surface of the metal cavity is slotted or hollowed to achieve different forms of linearly polarized, circularly polarized electromagnetic radiation and radiation patterns.
5. The low-profile slot antenna based on tightly-coupled radiation as claimed in claim 4, wherein the slot of the metal cavity is equivalent to microstrip metal patch radiation, and the adjustment of the electromagnetic wave distribution in the cavity is realized by adjusting the height and size of the metal cavity.
6. The tightly-coupled radiation-based low-profile slot antenna as claimed in claim 2, wherein the feed line is located inside the metal cavity to achieve extremely low electromagnetic wave distribution at the back of the antenna, reduce the antenna back lobe, and form an antenna array with low back lobe in the array state.
7. The mounting device of the low-profile slot antenna based on the tightly coupled radiation according to any one of claims 1 to 6, wherein the mounting device comprises a fixed member (1), a driving member (2) is arranged on the fixed member (1), a supporting member (3) is arranged on the fixed member (1), rotating members (4) distributed in an array are arranged on the supporting member (3), a limiting member (5) is arranged on the rotating member (4), a mounting member (6) is arranged on the rotating member (4), a fastening member (7) is arranged on the mounting member (6), a hydraulic cylinder (8) is arranged on the supporting member (3), and an output shaft of the hydraulic cylinder (8) is tightly connected with an adjusting member (9);
the fixing piece (1) comprises a fixing frame (11), a connecting piece (12) is rotatably arranged on the fixing frame (11), a bearing plate (13) is arranged on the connecting piece (12), and a guide column (14) is arranged on the bearing plate (13);
the driving piece (2) comprises a motor (21), an output shaft of the motor (21) penetrates through the fixed frame (11) and is fixedly connected with a first connecting rod (22), a second connecting rod (23) is arranged on the first connecting rod (22) in a rotating mode, a third connecting rod (24) is arranged on the second connecting rod (23) in a rotating mode, the third connecting rod (24) is fixedly connected with the connecting piece (12), and the motor (21) is fixedly connected with the fixed frame (11);
the support piece (3) comprises a first support frame (31), a second support frame (32) is arranged on the first support frame (31), connecting blocks (33) are distributed on the second support frame (32) in an array mode, the first support frame (31) is fixedly connected with the bearing plate (13), and the hydraulic cylinder (8) is fixedly connected with the second support frame (32).
8. The mounting device for the low-profile slot antenna based on the tightly coupled radiation according to claim 7, wherein the rotating member (4) comprises a rotating plate (41), baffle plates (42) are arranged on both sides of the rotating plate (41), a first sliding rail (43) is arranged on each baffle plate (42), a second sliding rail (44) is arranged on each rotating plate (41), a limiting groove (45) is arranged on each rotating plate (41), a connecting frame (46) is arranged on each rotating plate (41), a positioning plate (47) is arranged on each rotating plate (41), and each connecting frame (46) is rotatably connected with the connecting block (33);
the limiting piece (5) comprises a sliding block (51), a first clamping groove (52) is fixedly connected to the sliding block (51), a second clamping groove (53) is arranged in the first clamping groove (52) in a sliding mode, a supporting rod (54) is arranged in the second clamping groove (53) in a sliding mode, a limiting plate (55) is arranged on the supporting rod (54), a first through hole (56) is formed in the limiting plate (55), the limiting plate (55) is matched with the limiting groove (45) for limiting, and the limiting piece (5) is matched with the rotating piece (4) through the sliding block (51) and the first sliding rail (43) and is in sliding connection with the rotating piece;
the mounting piece (6) comprises a mounting plate (61), a fastening plate (62) is arranged on the mounting plate (61), a second through hole (63) is formed in the fastening plate (62), a third through hole (64) is formed in the mounting plate (61), a sliding groove (65) is formed below the mounting plate (61), limiting blocks (66) distributed in an array manner are arranged on the mounting plate (61), matching grooves (67) are formed in two sides of each limiting block (66), positioning grooves (68) distributed in an array manner are communicated with the matching grooves (67), threaded holes (69) distributed in an array manner are formed in the limiting blocks (66), the mounting piece (6) is matched with the rotating piece (4) in a sliding manner through the sliding grooves (65) and the second sliding rails (44), the limiting plate (55) is matched with the third through hole (64), and a screw rod penetrates through the second through hole (63) and the first through hole (56) to fixedly connect the mounting piece (6) with the limiting piece (5);
the fastening piece (7) comprises a pressing plate (71), a fourth through hole (72) is formed in the pressing plate (71), a stop block (73) is arranged below the pressing plate (71), an extrusion block (74) is obliquely arranged on the stop block (73), a positioning block (76) is arranged below the pressing plate (71), the positioning block (76) and the positioning groove (68) are matched and positioned, and a bolt penetrates through the fourth through hole (72) to be in threaded fit with the threaded hole (69) to fasten the fastening piece (7) and the mounting piece (6);
adjusting part (9) are equipped with guiding hole (92) including adjusting post (91) on adjusting post (91), be equipped with recess (93) on adjusting post (91), recess (93) internal rotation is equipped with adjusts pole (94), adjust pole (94) and rotor plate (41) rotation and be connected, adjusting part (9) pass through guiding hole (92) and guiding post (14) cooperation and mounting (1) sliding connection, the output shaft of pneumatic cylinder (8) passes second support frame (32) and guiding post (14) fastening connection.
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| CN202110300179.2A CN113054435B (en) | 2021-03-22 | 2021-03-22 | Low-profile slot antenna based on tightly-coupled radiation and mounting device thereof |
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| CN202110300179.2A CN113054435B (en) | 2021-03-22 | 2021-03-22 | Low-profile slot antenna based on tightly-coupled radiation and mounting device thereof |
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| CN113054435A CN113054435A (en) | 2021-06-29 |
| CN113054435B true CN113054435B (en) | 2022-12-30 |
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| CN113871850B (en) * | 2021-08-19 | 2023-01-20 | 北京邮电大学 | Ridge gap waveguide feed microwave millimeter wave dual-frequency broadband super-surface antenna |
| CN114784512A (en) * | 2022-04-21 | 2022-07-22 | 中国人民解放军63660部队 | Broadband low-cross-polarization microstrip patch phased-array antenna unit |
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| CN104282988A (en) * | 2014-09-30 | 2015-01-14 | 中国电子科技集团公司第三十八研究所 | Metal cavity broadband antenna |
| CN108539414A (en) * | 2018-03-29 | 2018-09-14 | 中国电子科技集团公司第三十八研究所 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
| CN210129573U (en) * | 2019-08-14 | 2020-03-06 | 成都理工大学 | Electronic communication antenna support |
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| US6646618B2 (en) * | 2001-04-10 | 2003-11-11 | Hrl Laboratories, Llc | Low-profile slot antenna for vehicular communications and methods of making and designing same |
| CN103151586B (en) * | 2013-02-01 | 2016-03-02 | 华为技术有限公司 | The coupling device of a kind of metal coaxial cavity and dielectric resonant chamber and filter |
| US10038237B2 (en) * | 2015-11-11 | 2018-07-31 | Raytheon Company | Modified cavity-backed microstrip patch antenna |
| CN106229667B (en) * | 2016-09-12 | 2023-01-06 | 华南理工大学 | Embedded broadband dual-polarized antenna |
| CN106785404B (en) * | 2017-01-10 | 2023-08-22 | 华南理工大学 | Novel embedded broadband dual polarized antenna |
| CN110380233A (en) * | 2018-12-29 | 2019-10-25 | 西安电子科技大学 | A kind of low section Scanning Phased Array Antenna with Broadband |
| CN110401018A (en) * | 2019-07-18 | 2019-11-01 | 东莞理工学院 | Ultra wideband dual polarization radiating element and antenna |
| CN112259950A (en) * | 2020-10-14 | 2021-01-22 | 胡增永 | Antenna support structure for 5G communication |
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| CN104282988A (en) * | 2014-09-30 | 2015-01-14 | 中国电子科技集团公司第三十八研究所 | Metal cavity broadband antenna |
| CN108539414A (en) * | 2018-03-29 | 2018-09-14 | 中国电子科技集团公司第三十八研究所 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
| CN210129573U (en) * | 2019-08-14 | 2020-03-06 | 成都理工大学 | Electronic communication antenna support |
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