CN112531333A - inverted-F oscillator and missile-borne communication leading antenna comprising same - Google Patents
inverted-F oscillator and missile-borne communication leading antenna comprising same Download PDFInfo
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- CN112531333A CN112531333A CN202011379193.8A CN202011379193A CN112531333A CN 112531333 A CN112531333 A CN 112531333A CN 202011379193 A CN202011379193 A CN 202011379193A CN 112531333 A CN112531333 A CN 112531333A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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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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- 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
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses an inverted F oscillator and a missile-borne communication guide antenna comprising the same, wherein the inverted F oscillator comprises an oscillator main body and a feed coaxial device serving as an independent component; the vibrator main body is of a roughly U-shaped integrated forming structure and sequentially comprises a straight line part, a curve part and an L-shaped part; the feed coaxial device is of a variable cross-section stepped structure; the missile-borne communication directing antenna comprises an installation box body, a rear cover plate, a feed printed board, an inverted-F oscillator and an antenna housing, wherein the rear cover plate, the feed printed board, the inverted-F oscillator and the antenna housing are installed on the installation box body from bottom to top, and a unique directing structure is constructed, so that the directing function of an antenna directional diagram towards a specific direction is realized. The invention provides a linearly polarized cavity side feed-back F-shaped oscillator structure antenna as a missile-borne communication leading antenna, and a special design is carried out on an antenna feed board to solve the problem of actual impedance matching debugging, so that the problem of the requirement of a missile-borne communication system on leading an antenna directional diagram under the condition of limited installation space is solved.
Description
Technical Field
The invention belongs to the field of antennas on missile-borne communication systems, and particularly relates to an inverted-F oscillator with a unique structure and an S-band missile-borne communication guide antenna comprising the inverted-F oscillator.
Background
With the rapid development of wireless communication systems and missile-borne communication fields, missile-borne communication systems have put more and more demands and high requirements on the performance of antennas applied to missile-earth communication according to actual use requirements. In certain usage environments and usage requirements of missile-borne communication systems, it is desirable that missile-borne communication antenna patterns be capable of being directed in a particular direction.
Most of the existing products use patch or oscillator form yagi antennas and quasi-yagi antennas to carry out directional diagram guiding design, and the yagi or quasi-yagi antennas can basically meet the use requirements, but have the following problems:
firstly, the antenna structure is complex, and the design difficulty is high due to the influence of the installation size of a carrier;
secondly, under the influence of the carrier environment, the directional diagram has poor guiding effect;
thirdly, the difficulty of matching and debugging the standing wave of the actual product is high, and the repetition is easy to occur.
In order to overcome the defects of the existing products, a novel directional diagram guiding antenna structure suitable for missile-borne environment is adopted.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements in the prior art, the invention provides a linearly polarized cavity side feed-back F element structure antenna as a missile-borne communication leading antenna, and an antenna feed board is specially designed to solve the problem of actual impedance matching debugging, so that the problem of the requirement of a missile-borne communication system on leading an antenna directional diagram under the condition of limited installation space is solved.
To achieve the above object, according to one aspect of the present invention, there is provided an inverted F resonator, comprising: the feed coaxial device comprises a vibrator main body and a feed coaxial device as an independent component;
the vibrator main body is of an approximately U-shaped integrated forming structure and sequentially comprises a straight line part, a curve part and an L-shaped part;
when the device is installed, the straight line part is positioned above, the arc line part is positioned obliquely above, and the L-shaped part is positioned on the side and below; the straight line part and the long strip part of the L-shaped part are distributed on the upper side and the lower side of the U-shaped groove, and the arc part and the folded angle part of the L-shaped part form the bottom of the U-shaped groove;
the feeding coaxial device is of a variable cross-section stepped structure and sequentially comprises a first main body part, a second column part and a third column part from top to bottom; the cross-sectional dimension of the middle second column portion is largest;
when the vibrator is installed, the feeding coaxial device is vertically arranged through the vibrator main body, wherein a straight line part of the vibrator main body is provided with a first through hole for a first main body part of the feeding coaxial device to pass through, and a long strip part of the L-shaped part of the vibrator main body is provided with a second through hole for a second main body part of the feeding coaxial device to pass through; the third body part of the feeding coaxial connector is fixed, the top of the first body part of the feeding coaxial connector protrudes out of the straight line part of the oscillator body, and the oscillator body is fixed by welding the first body part and the second body part around the protruded part.
In one preferred embodiment, in the feeding coaxial device, the cross-sectional dimension relationship is as follows:
the first body portion < the third cylinder portion < the second cylinder portion.
In one preferred embodiment, the height of the third column portion is the smallest in the feed coax.
In one preferred embodiment, the second column portion is provided at the center of the width of the elongated portion of the L-shaped portion.
To achieve the above object, according to another aspect of the present invention, there is provided a missile-borne communication directing antenna, characterized in that:
the antenna comprises an installation box body, and a rear cover plate, a feed printed board, an inverted F oscillator and an antenna housing which are arranged on the installation box body from bottom to top; the inverted F vibrator is the inverted F vibrator;
grooves are formed in the upper direction and the lower direction of the mounting box body, and the mounting box body is respectively sealed by the antenna housing to form a first air cavity and the rear cover plate to form a second air cavity;
the vibrator main body is arranged in the first air cavity, the feed printed board is arranged in the second air cavity, and the feed coaxial device sequentially penetrates through the vibrator main body, the mounting box body and the feed printed board;
the linear part of the vibrator main body is arranged at intervals with the antenna housing, the long strip part of the L-shaped part is arranged at intervals with the side wall of the first box body in the bottom direction of the U-shaped groove, and the opening end of the vibrator main body is arranged at intervals with the side wall of the second box body in the opening direction of the U-shaped groove; the long strip part of the L-shaped part of the vibrator main body is attached to one surface of the cavity layer of the box body;
the feed printed board is arranged at the bottom of the second air cavity, is attached to one surface of the cavity layer of the box body, is still arranged at an air interval on the rear cover plate, and is connected with a cable leading to the outside;
the vibrator main body is fed by a feeding printed board and a feeding coaxial device through a cable to excite a linear polarization wave;
the shape of the first air cavity, the height of the oscillator main body, the air space between the inverted F oscillator and the side wall of the first box body, the air space between the inverted F oscillator and the side wall of the second box body and the thickness of the side wall of the first box body are adjusted in a combined mode, and the antenna directional diagram is guided and adjusted.
In one preferred embodiment, a front surface of the feed printed board facing the direction of the rear cover board is provided with a microstrip transmission line, and a back surface facing away from the direction of the rear cover board is provided with a ground plane.
In one preferred embodiment, the microstrip transmission line comprises a circular ring part, a polygonal part and a long-strip part in sequence;
a third cylinder part of the feeding coaxial device emerges from the circular ring part, and the third cylinder part and the circular ring part are welded around the emerging part;
the polygonal part comprises two trapezoidal areas which are symmetrically arranged;
the tail end of the long belt part is connected with a cable.
In one preferred embodiment, the distance from the center of the circular ring part to the bottom of the oblique side of the adjacent trapezoid area is L1, the length of the bottom side of the trapezoid area is L2, the height of a single trapezoid area is L3, the width of the long belt part is L4, and two obtuse angles formed by the two oblique sides of the trapezoid area and the long belt part are respectively alpha and beta;
impedance matching is performed by changing the α, β, L1, L2, L3, L4 sizes of the microstrip transmission lines on the feed printed board.
In one preferred embodiment, the side wall of the second air cavity of the installation box body is provided with a channel for the cable to pass through;
the inner conductor of the cable is welded with the tail end of the long strip part in the microstrip transmission line of the feed printed board;
and the outer shielding layer at the end part of the cable is welded with a cable grounding block, and the cable grounding block is communicated with the grounding surface on the back of the feed printed board.
In one preferred embodiment, a cable fixing block is arranged above the channel of the cable;
the cable fixing block is independent of the outside of the rear cover plate and connected to the installation box body, and the cable is tightly pressed by adjusting the cable fixing block.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the invention provides a linearly polarized cavity side feed-back F-shaped oscillator structure antenna as a missile-borne communication leading antenna, and a special design is carried out on an antenna feed board to solve the problem of actual impedance matching debugging, so that the problem of the requirement of a missile-borne communication system on leading an antenna directional diagram under the condition of limited installation space is solved.
2. The inverted F vibrator adopts a unique structural design, the vibrator main body is in a shape of an opening similar to a letter F and inverted left and right, and the feeding coaxial device is separated from the structure independently to form an independent component which penetrates through the middle part of the vibrator main body and is in an inverted F shape integrally.
3. According to the inverted-F oscillator, the oscillator main body is integrally machined and molded, so that the modular design of an antenna assembly is realized, and the follow-up antenna is favorably applied to the improved design of different use requirements;
4. the missile-borne communication guiding antenna disclosed by the invention constructs a unique guiding structure, and realizes the function of guiding an antenna directional diagram towards a specific direction by combining and adjusting the shape of the first air cavity, the height of the oscillator main body, the air distance between the inverted-F oscillator and the side wall of the first box body, the air distance between the inverted-F oscillator and the side wall of the second box body and the thickness of the side wall of the first box body.
5. The free connection between the radio frequency coaxial cable and other equipment is realized under the condition of limited missile-borne installation space by adopting an excitation feed mode of combining the radio frequency coaxial cable with a feed printed board.
6. The feed printed board adopts a microstrip transmission line design with a special shape, so that the adjustability of impedance matching and standing wave bandwidth of the inverted-F oscillator antenna can be improved, and the transmission efficiency of radio-frequency signals is realized.
7. The impedance is adjustable and matched by changing the sizes of alpha, beta, L1, L2, L3 and L4 of the microstrip transmission line on the feed printed board.
8. The installation and fixation structure of the grounding block and the fixing block is adopted between the radio frequency coaxial cable and the installation box body, so that reliable feeding and reliable radio frequency signal transmission of the radio frequency coaxial cable are realized.
The invention is not only suitable for the requirement of carrier communication systems such as rockets, missiles and the like on the direction of the antenna directional diagram, but also suitable for the special use requirement of the carrier communication systems such as the ground, vehicles and the like.
Drawings
Fig. 1 is a schematic diagram of an inverted-F transducer according to an embodiment of the present invention;
fig. 2 is a perspective view of the missile-borne communication according to the embodiment of the present invention, which is directed to the up-down direction of the antenna (the upward direction is the actual upward direction when the plane of the paper is upward);
fig. 3 is a perspective view of the missile-borne communication directed to the antenna in the up-down direction (the upward paper plane is the actual downward direction) according to the embodiment of the present invention;
FIG. 4 is a schematic plan view of a missile-borne communication directing antenna of an embodiment of the invention;
fig. 5 is a schematic cross-sectional view of a mounting case of a missile-borne communication directing antenna according to an embodiment of the present invention (with the paper plane facing upward in a substantially downward direction);
fig. 6 is a schematic cross-sectional view of a missile-borne communication directing antenna according to an embodiment of the invention (with the paper plane facing upward being a practical downward direction);
FIG. 7 is a schematic plan half-section view of a missile-borne communication steering antenna according to an embodiment of the invention;
fig. 8 is a schematic diagram of a microstrip transmission line design on the front side of a feed printed board of a missile-borne communication directing antenna according to an embodiment of the present invention;
FIG. 9 is a schematic representation of the standing wave of an antenna accessible by missile-borne communication directed to the antenna in accordance with an embodiment of the present invention;
fig. 10 is a schematic gain diagram of the missile-borne communication leading antenna according to the embodiment of the present invention, where Phi is 0 °, Phi is 10 °, Phi is 20 °, Phi is 30 °, Phi is 40 °, Phi is 50 °, Phi is 60 °, and Phi is 70 °.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As shown in fig. 1, the present invention provides an inverted F-shaped resonator including a resonator body 2 and a feeding coaxial connector 4 as an independent component;
the vibrator body 2 is of a roughly U-shaped integrated forming structure and sequentially comprises a linear part 21, an arc part 22 and an L-shaped part 23;
when the device is installed, the straight line part 21 is positioned above, the arc part 22 is positioned obliquely above, and the L-shaped part 23 is positioned on the side and below; the long-strip parts of the straight line part 21 and the L-shaped part 23 are distributed on the upper side and the lower side of the U-shaped groove, and the arc part 22 and the folded angle part of the L-shaped part 23 form the bottom of the U-shaped groove;
the feeding coaxial device 4 is of a variable cross-section stepped structure and sequentially comprises a first main body part 41, a second column part 42 and a third column part 43 from top to bottom; the cross-sectional dimension of the middle second column portion 42 is largest;
when the feeding coaxial device 4 is mounted, the feeding coaxial device 4 is vertically arranged through the vibrator main body 2, wherein the straight portion 21 of the vibrator main body 2 is provided with a first through hole for the first main body portion 41 of the feeding coaxial device 4 to pass through, and the long portion of the L-shaped portion 23 of the vibrator main body 2 is provided with a second through hole for the second main body portion 42 of the feeding coaxial device 4 to pass through; the third body portion 43 of the feeding coax 4 is fixed, the top of the first body portion 41 of the feeding coax 4 protrudes from the straight portion 21 of the vibrator body 2, and the vibrator body 2 is fixed by welding both around the protruded portion.
In one preferred embodiment, in the feeding coaxial device 4, the cross-sectional dimension relationship is as follows:
In one preferred embodiment, the height of the third cylindrical portion 43 is the smallest in the feed coax 4.
In one preferred embodiment, the second column portion 42 is disposed in the width center of the elongated portion of the L-shaped portion 23.
In one of the preferred embodiments, the linear portion 21 of the vibrator body 2 and the elongated portion of the L-shaped portion 23 are flush at the open end.
In one preferred embodiment, the L-shaped portion 23 is a right angle folded corner, that is, the folded corner of the L-shaped portion 23 is a 90 ° folded corner.
In one of the preferred embodiments, the curved portion 22 is substantially 90 sector shaped.
As shown in fig. 2-10, the present invention provides a missile-borne communication directing antenna, wherein:
the antenna comprises an installation box body 3, and a rear cover plate 6, a feed printed board 5, an inverted-F oscillator and an antenna cover 1 which are arranged on the installation box body 3 from bottom to top; the inverted F vibrator adopts the inverted F vibrator;
grooves are formed in the upper direction and the lower direction of the mounting box body 3, and the mounting box body is respectively sealed by the antenna housing 1 into a first air cavity 31 and the rear cover plate 6 into a second air cavity 32;
the vibrator main body 2 is arranged in the first air cavity 31, the feed printed board 5 is arranged in the second air cavity 32, and the feed coaxial device 4 sequentially penetrates through the vibrator main body 2, the installation box body 3 and the feed printed board 5;
the straight line part 21 of the vibrator body 2 is arranged at an interval with the antenna housing 1, the long strip part of the L-shaped part 23 is arranged at an interval with a first box body side wall 33 in the bottom direction of the U-shaped groove, and the opening end of the vibrator body 2 is arranged at an interval with a second box body side wall 34 in the opening direction of the U-shaped groove; the long strip part of the L-shaped part 23 of the vibrator main body 2 is attached to one surface of the box body cavity dividing layer 35; the lower end of the second cylinder part 42 is flush with the lower surface of the box body chamber-separating layer 35; the upper end of the second cylindrical portion 42 is flush with the inner surface of the elongate portion of the L-shaped portion 23;
the feed printed board 5 is arranged at the bottom of the second air cavity 32, is attached to one surface of the box body cavity dividing layer 35, is arranged on the rear cover plate 6 at an air interval, and is connected with a cable 7 leading to the outside;
the vibrator body 2 is fed by a feeding printed board 6 and a feeding coaxial device 4 through a cable 7 to excite linear polarization waves;
the air space between the inverted-F vibrator and the side wall 33 of the first box body, the air space between the inverted-F vibrator and the side wall 34 of the second box body and the thickness of the side wall 33 of the first box body are combined to influence whether the directional diagram is guided to and the specific direction position of the maximum gain after the directional diagram is guided to the rear; in the figure, the air distance between the left side and the right side of the inverted F array and the side wall of the cavity, the depth of the cavity and the height of the inverted F array influence the beam width of a directional diagram, namely the low elevation gain of the directional diagram beam; the antenna pattern is adjusted by adjusting the shape of the first air cavity 31, the height of the vibrator body 2, the air gap between the inverted-F vibrator (specifically, the bent portion of the L-shaped portion 23) and the first case side wall 33, the air gap between the inverted-F vibrator (specifically, the open end portion) and the second case side wall 34, and the thickness of the first case side wall 33 in combination.
In one preferred embodiment, the shape of the first air cavity 31 includes a cross-sectional profile (e.g., rectangular or other shape), a depth, a width, etc. of the first air cavity 31.
As shown in fig. 5, specifically, an air cavity is formed between the radome 1 and the installation box 3, an air gap with a certain thickness is left between the rear cover plate 6 and the feed printed board 5, the oscillator body 2 and the installation box 3 are tightly attached to each other by screws to form a whole, the feed printed board 5, the feed coaxial connector 4 and the oscillator body 2 are tightly attached to each other by soldering tin to form a whole, the cable 7 and the heat-shrinkable tubing 10 are thermally shrunk to form a whole, the outer shielding layer of the cable 7 and the cable grounding block 8 are tightly attached to each other by soldering tin to form a whole, the cable grounding block 8 and the installation box 3 are tightly attached to each other by screws to form a whole, the inner conductor of the cable 7 and the feed printed board 5 are tightly attached to each other by soldering tin to form a whole, and, Installation box body 3, cable 7 are a whole through the inseparable laminating of screw, back shroud 6 is a whole through the inseparable laminating of screw with installation box body 4, antenna house 1 is a whole through the inseparable laminating of screw with installation box body 4. Oscillator main part 2, antenna house 1 are located the 3 upside of installation box body, feed printing board 5, back shroud 6 are located the 3 downside of installation box body, oscillator main part 2, feed coaxial coupling 4, feed printing board 5 are located the cavity between antenna house 1 and installation box body 3 and the cavity between back shroud 6 and the installation box body 3.
In one preferred embodiment, the front side of the feed printed board 5 facing the rear cover 6 is lithographically provided with a microstrip transmission line, and the rear side facing away from the rear cover is lithographically provided with a ground plane. The vibrator body 2 is fed by a feeding printed board 6 and a feeding coaxial device 4 through a cable 7 connecting a microstrip transmission line and a ground plane to excite linear polarized waves.
In one of the preferred embodiments, the microstrip transmission line substantially has an integral structure, which includes, in order from a virtual partition, a circular ring portion 51, a polygonal portion 52, and a long strip portion 53;
the third column part 43 of the feeding coaxial connector 4 emerges from the circular ring part 51, and the two are welded around the emerging part;
the polygonal portion 52 includes two trapezoidal regions symmetrically disposed; the long band portion 53 is connected to the circular portion 51, and the two trapezoidal regions are distributed on both sides
The end of the long band part 53 is connected to the cable 7.
In one preferred embodiment, the distance from the center of the circular ring part 51 to the bottom of the oblique side of the adjacent trapezoidal region is L1, the length of the bottom side of the trapezoidal region is L2, the height of a single trapezoidal region is L3, the width of the long strip part 53 is L4, and the two obtuse angles formed by the two oblique sides of the trapezoidal region and the long strip part 53 are respectively α and β;
impedance matching is performed by changing the sizes of α, β, L1, L2, L3, L4 of the microstrip transmission line on the feed printed board 5.
In one preferred embodiment, the side wall of the second air cavity 32 of the installation box 3 is provided with a channel for the cable 7 to pass through;
the inner conductor of the cable 7 is soldered to the end of the long strip portion 53 in the microstrip transmission line of the feed printed board 5;
and a cable grounding block 8 is welded on the outer shielding layer at the end part of the cable 7, and the cable grounding block 8 is communicated with the grounding surface on the back surface of the feed printed board 5. The cable grounding block 8 is positioned between the rear cover plate 6 and the cable 7, is firstly installed on the installation box body 3 through a screw and compresses the cable 7, and then is covered by the rear cover plate 6. The cable ground block 8 is also provided with conductor connectors, such as metal, on its side that communicate with the ground plane on the back side of the feed printed board 5, which conductor connectors are of course insulated from the inner conductor of the cable 7.
In one of the preferred embodiments, a cable fixing block 9 is provided above the passage of the cable 7;
the cable fixing block 9 is independent of the rear cover plate 6 and connected to the mounting box body 3, and the cable 7 is compressed by adjusting the cable fixing block 9. The cable fixing block 9 is abutted with the cable grounding block 8 and the rear cover plate 6.
In this embodiment, the operating frequency band of the antenna is an S-band, and the directional pattern is directed toward the front of the bent arm of the inverted-F dipole. The antenna housing is made of a material with a dielectric constant of 4.5, the length and the width of the antenna housing are 50mm multiplied by 50mm, and the thickness of the antenna housing is 2 mm; the length of the vibrator main body is 16 mm; the feed printed board is made of a microwave board with a dielectric constant of 9.6, the size of the feed printed board is 40mm multiplied by 40mm, the thickness of the feed printed board is 2mm, alpha is 141 degrees, beta is 129 degrees, L1 is 1.5mm, L2 is 10.5mm, L3 is 3.6mm, L4 is 2mm, and the ground plane and the microstrip transmission line are made of copper-plated materials and have the thickness of 0.018 mm. Other working frequency bands and directional diagram guiding requirements can change and optimize the parameter indexes.
Fig. 9 shows the standing wave of the present invention, and the bandwidth of the standing wave less than 2 is 15% or more.
Fig. 10 shows that the central frequency band Phi is 0 °, Phi is 10 °, Phi is 20 °, Phi is 30 °, Phi is 40 °, Phi is 50 °, Phi is 60 °, Phi is 70 ° plane gain (considering pattern symmetry, Phi is 290 ° to 360 ° is equal to Phi 70 ° to 0 °), the gain of Theta is greater than-6 dBi within ± 80 ° (the gain of Theta is-5.5 dBi at +80 °, the gain of Theta is +2.55dBi at-80 °) and the maximum gain is greater than 6dBi, and the maximum gain appears near Theta-60 °, so as to implement directional design of the pattern and meet the actual use requirement. The electrical properties of figures 9-10 of the present invention are all simulation results in a missile-borne simulation environment.
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
1. the invention provides a linearly polarized cavity side feed-back F-shaped oscillator structure antenna as a missile-borne communication leading antenna, and a special design is carried out on an antenna feed board to solve the problem of actual impedance matching debugging, so that the problem of the requirement of a missile-borne communication system on leading an antenna directional diagram under the condition of limited installation space is solved.
2. The inverted F vibrator adopts a unique structural design, the vibrator main body is in a shape of an opening similar to a letter F and inverted left and right, and the feeding coaxial device is separated from the structure independently to form an independent component which penetrates through the middle part of the vibrator main body and is in an inverted F shape integrally.
3. According to the inverted-F oscillator, the oscillator main body is integrally machined and molded, so that the modular design of an antenna assembly is realized, and the follow-up antenna is favorably applied to the improved design of different use requirements;
4. the missile-borne communication guiding antenna disclosed by the invention constructs a unique guiding structure, and realizes the function of guiding an antenna directional diagram towards a specific direction by combining and adjusting the shape of the first air cavity, the height of the oscillator main body, the air distance between the inverted-F oscillator and the side wall of the first box body, the air distance between the inverted-F oscillator and the side wall of the second box body and the thickness of the side wall of the first box body.
5. The free connection between the radio frequency coaxial cable and other equipment is realized under the condition of limited missile-borne installation space by adopting an excitation feed mode of combining the radio frequency coaxial cable with a feed printed board.
6. The feed printed board adopts a microstrip transmission line design with a special shape, so that the adjustability of impedance matching and standing wave bandwidth of the inverted-F oscillator antenna can be improved, and the transmission efficiency of radio-frequency signals is realized.
7. The impedance is adjustable and matched by changing the sizes of alpha, beta, L1, L2, L3 and L4 of the microstrip transmission line on the feed printed board.
8. The installation and fixation structure of the grounding block and the fixing block is adopted between the radio frequency coaxial cable and the installation box body, so that reliable feeding and reliable radio frequency signal transmission of the radio frequency coaxial cable are realized.
The invention is not only suitable for the requirement of carrier communication systems such as rockets, missiles and the like on the direction of the antenna directional diagram, but also suitable for the special use requirement of the carrier communication systems such as the ground, vehicles and the like.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An inverted-F resonator, comprising: the feed coaxial device comprises a vibrator main body and a feed coaxial device as an independent component;
the vibrator main body is of an approximately U-shaped integrated forming structure and sequentially comprises a straight line part, a curve part and an L-shaped part;
when the device is installed, the straight line part is positioned above, the arc line part is positioned obliquely above, and the L-shaped part is positioned on the side and below; the straight line part and the long strip part of the L-shaped part are distributed on the upper side and the lower side of the U-shaped groove, and the arc part and the folded angle part of the L-shaped part form the bottom of the U-shaped groove;
the feeding coaxial device is of a variable cross-section stepped structure and sequentially comprises a first main body part, a second column part and a third column part from top to bottom; the cross-sectional dimension of the middle second column portion is largest;
when the vibrator is installed, the feeding coaxial device is vertically arranged through the vibrator main body, wherein a straight line part of the vibrator main body is provided with a first through hole for a first main body part of the feeding coaxial device to pass through, and a long strip part of the L-shaped part of the vibrator main body is provided with a second through hole for a second main body part of the feeding coaxial device to pass through; the third body part of the feeding coaxial connector is fixed, the top of the first body part of the feeding coaxial connector protrudes out of the straight line part of the oscillator body, and the oscillator body is fixed by welding the first body part and the second body part around the protruded part.
2. The inverted-F transducer of claim 1, wherein:
in the feed coaxial device, the cross section size relationship is as follows:
the first body portion < the third cylinder portion < the second cylinder portion.
3. The inverted-F transducer of claim 1, wherein:
in the feed coax, the third column portion has a minimum height.
4. The inverted-F transducer of claim 1, wherein:
the second column portion is disposed in the center of the width of the long strip portion of the L-shaped portion.
5. A missile-borne communication directing antenna, comprising:
the antenna comprises an installation box body, and a rear cover plate, a feed printed board, an inverted F oscillator and an antenna housing which are arranged on the installation box body from bottom to top; the inverted-F oscillator is the inverted-F oscillator of any one of claims-A;
grooves are formed in the upper direction and the lower direction of the mounting box body, and the mounting box body is respectively sealed by the antenna housing to form a first air cavity and the rear cover plate to form a second air cavity;
the vibrator main body is arranged in the first air cavity, the feed printed board is arranged in the second air cavity, and the feed coaxial device sequentially penetrates through the vibrator main body, the mounting box body and the feed printed board;
the linear part of the vibrator main body is arranged at intervals with the antenna housing, the long strip part of the L-shaped part is arranged at intervals with the side wall of the first box body in the bottom direction of the U-shaped groove, and the opening end of the vibrator main body is arranged at intervals with the side wall of the second box body in the opening direction of the U-shaped groove; the long strip part of the L-shaped part of the vibrator main body is attached to one surface of the cavity layer of the box body;
the feed printed board is arranged at the bottom of the second air cavity, is attached to one surface of the cavity layer of the box body, is still arranged at an air interval on the rear cover plate, and is connected with a cable leading to the outside;
the vibrator main body is fed by a feeding printed board and a feeding coaxial device through a cable to excite a linear polarization wave;
the shape of the first air cavity, the height of the oscillator main body, the air space between the inverted F oscillator and the side wall of the first box body, the air space between the inverted F oscillator and the side wall of the second box body and the thickness of the side wall of the first box body are adjusted in a combined mode, and the antenna directional diagram is guided and adjusted.
6. The missile-borne communication directing antenna of claim 5, wherein:
the front surface of the feed printed board facing the direction of the rear cover plate is provided with a microstrip transmission line, and the back surface of the feed printed board facing away from the direction of the rear cover plate is provided with a ground plane.
7. The missile-borne communication directing antenna of claim 6, wherein:
the microstrip transmission line sequentially comprises a circular ring part, a polygonal part and a long band part;
a third cylinder part of the feeding coaxial device emerges from the circular ring part, and the third cylinder part and the circular ring part are welded around the emerging part;
the polygonal part comprises two trapezoidal areas which are symmetrically arranged;
the tail end of the long belt part is connected with a cable.
8. The missile-borne communication directing antenna of claim 7, wherein:
the distance from the circle center of the circular ring part to the bottom of the oblique side of the adjacent trapezoid area is L1, the length of the bottom side of the trapezoid area is L2, the height of a single trapezoid area is L3, the width of the long belt part is L4, and two obtuse angles formed by the two oblique sides of the trapezoid area and the long belt part are respectively alpha and beta;
impedance matching is performed by changing the α, β, L1, L2, L3, L4 sizes of the microstrip transmission lines on the feed printed board.
9. The missile-borne communication directing antenna of claim 8, wherein:
a channel is formed in the side wall of the second air cavity of the mounting box body and is used for the cable to pass through;
the inner conductor of the cable is welded with the tail end of the long strip part in the microstrip transmission line of the feed printed board;
and the outer shielding layer at the end part of the cable is welded with a cable grounding block, and the cable grounding block is communicated with the grounding surface on the back of the feed printed board.
10. The missile-borne communication directing antenna of claim 9, wherein:
a cable fixing block is arranged above the channel of the cable;
the cable fixing block is independent of the outside of the rear cover plate and connected to the installation box body, and the cable is tightly pressed by adjusting the cable fixing block.
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|---|---|---|---|
| CN202011379193.8A CN112531333B (en) | 2020-12-01 | 2020-12-01 | inverted-F oscillator and missile-borne communication leading antenna comprising same |
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| CN202011379193.8A CN112531333B (en) | 2020-12-01 | 2020-12-01 | inverted-F oscillator and missile-borne communication leading antenna comprising same |
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| CN112531333B CN112531333B (en) | 2023-03-24 |
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| CN112531333B (en) | 2023-03-24 |
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