CN112864596B - Missile-borne high-gain backward radiation phase modulation array antenna in rotational symmetry arrangement - Google Patents
Missile-borne high-gain backward radiation phase modulation array antenna in rotational symmetry arrangement Download PDFInfo
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- CN112864596B CN112864596B CN202110021102.1A CN202110021102A CN112864596B CN 112864596 B CN112864596 B CN 112864596B CN 202110021102 A CN202110021102 A CN 202110021102A CN 112864596 B CN112864596 B CN 112864596B
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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
- 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
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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
- H01Q3/34—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 by electrical means
- H01Q3/36—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 by electrical means with variable phase-shifters
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Abstract
The invention provides a rotationally-symmetrically-arranged missile-borne high-gain backward radiation phase modulation array antenna, wherein four array elements are arranged perpendicular to the outer surface of a metal projectile, four pairs of array elements are rotationally and symmetrically arranged around the axial direction of the metal projectile, a phase modulation matching network board is positioned at the center which is axially intersected with the metal projectile on the plane where four columnar metal radiation vibrators are positioned, the phase modulation matching network board is a power division four-network, and four ports have the characteristic of equal amplitude and 90-degree sequential phase difference; the four array elements are respectively connected with four input ports of the phase modulation matching network board. The invention has better impedance characteristic, high structural strength and low realization cost; the backward gain of the antenna can be quickly adjusted; the problem of blocking influence of the projectile body is solved; the circularly polarized array antenna can work in a circularly polarized mode, the anti-interference capacity of the antenna is improved, and the problem of polarization mismatch caused by rotation of the projectile body is solved.
Description
Technical Field
The invention relates to the field of antennas, in particular to a missile-borne miniaturized telemetering communication antenna system, which relates to the aspects of directional communication, interference resistance, high overload resistance and the like of a missile-borne antenna.
Background
With the rapid progress and development of radio communication technology, the requirements for various electronic devices with missile-borne and airborne platforms are also higher and higher. The missile-borne antenna has the function of receiving and transmitting radio signals to realize signal transmission with ground equipment. In order to facilitate combat arrangement, common ground equipment is arranged behind the flight path of a projectile body, namely the missile-borne antenna is required to have good backward radiation characteristics, and due to the high temperature of the tail part of the projectile body and other factors, the missile-borne antenna is generally arranged at the head part of the projectile body, so that the design difficulty of projectile body shielding is faced. Meanwhile, most of the projectiles rotate at high speed in the flight process, and the flight attitude of the projectiles has great influence on the radiation characteristics of the antenna. The traditional missile-borne conformal antenna mainly comprises a microstrip antenna, an inverted-F antenna, a microstrip element antenna and the like, and has the following defects aiming at the radio communication with the missile tail direction linear polarization ground equipment:
1. the antenna has low backward radiation gain and is difficult to meet specific requirements of remote communication and the like;
2. the high overload resistance is weak, and the universality of different weapon platforms is not easy to realize;
3. the single linear polarization works, and the polarization mismatch condition with ground equipment caused by the rotation of the projectile body is easy to occur.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a rotationally-symmetrically-arranged missile-borne high-gain backward radiation phase modulation array antenna. Aiming at the requirements of the missile-borne platform and ground directional data transmission, the invention simultaneously solves a plurality of technical problems that the radiation characteristic of the antenna is influenced due to the shielding of the missile, the polarization characteristic of the antenna is changed due to the rotation of the missile, the structural reliability of the antenna is influenced due to the high overload of the missile, and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a rotationally-symmetrically arranged missile-borne high-gain backward radiation phase modulation array antenna comprises a columnar metal radiation oscillator (1), a metal guide oscillator (2), a metal groove (3), a phase modulation matching network board (4), metal shots (5) and a radio frequency connector (6), wherein an antenna unit and the phase modulation matching network are integrally designed, the columnar metal radiation oscillator (1) and the metal guide oscillator (2) form an array element, the four array elements are totally four, each array element is arranged perpendicular to the outer surface of the metal shot (5), the four pairs of array elements are symmetrically arranged around the axial direction of the metal shot (5), and every two of the four array elements are spaced by 90 degrees; the tuning and matching network board (4) is positioned at the center of the axial intersection of the four columnar metal radiating vibrators (1) and the metal shot (5), the tuning and matching network board (4) is a power division four-network, and four ports have the characteristic of equal amplitude and 90-degree phase difference in sequence; the four array elements are respectively connected with four input ports of the phase modulation matching network board (4).
The metal shot (5) is a conical round table with a hollow structure, the diameter of the upper surface of the metal shot (5) is smaller than that of the lower surface of the metal shot (5), and four planes are sequentially constructed on the arc of the outer surface of the metal shot (5) in a rotating mode at 90-degree intervals to form four metal grooves (3).
The columnar metal radiating vibrator (1) comprises a metal vibrator and a medium, wherein the metal vibrator is coated with a layer of medium made of insulating materials, the cross section of the metal vibrator is polygonal (preferably cylindrical), the medium is made of insulating materials such as polytetrafluoroethylene or epoxy, the metal vibrator and the medium integrally penetrate through the outer surface of a metal shot (5), the metal vibrator and the medium are vertically installed and fixed on the bottom plane of a metal groove (3) formed in the surface of the metal shot, and the metal vibrator extends inwards to be connected with the input end of a phase modulation matching network board (4) in a cavity of the metal shot (5).
The phase modulation matching network board (4) is installed and fixed on a metal frame of a metal shot inner cavity, and the radio frequency connector (6) is connected with an output port of the phase modulation matching network board (4) to form a total radio frequency port of the missile-borne antenna.
The metal guide vibrator (2) is threaded, is of a columnar structure of any polygon, is vertically installed and fixed on the bottom plane of a metal wall (3) constructed on the surface of the metal shot and is in short-circuit connection with the metal shot (5).
On the surface of the circular truncated cone of the metal shot (5), the axial height of the metal guide vibrator (2) is lower than that of the columnar metal radiation vibrator (1).
The distance between the columnar metal radiation vibrator (1) and the upper side wall of the metal groove (3) is larger than the distance between the columnar metal radiation vibrator (1) and the metal guide vibrator (2).
The height of the cylindrical body of the metal leading vibrator (2) higher than the bottom plane of the metal groove (3) is less than the height of the cylindrical body of the metal radiating vibrator (1) higher than the bottom plane of the metal groove (3).
The metal radiating vibrator (1) and the metal guiding vibrator (2) are arranged on the same bus of the outer surface of the circular table of the metal shot (5).
The metal oscillator antenna has the advantages that the metal oscillator antenna has better impedance characteristic, high structural strength and low realization cost; the reflector utilizes the elastomer metal wall as a function, is not designed independently, and can quickly adjust the backward gain of the antenna by adjusting the distance between the metal radiating oscillator and the elastomer metal wall and the guiding oscillator; the omnidirectional beam coverage perpendicular to the axial direction of the projectile body is realized by using the form of rotationally and symmetrically arranging four array elements and crisscross arrangement, and the shielding influence of the projectile body is solved; the amplitude phase characteristics of the four array elements are adjusted by utilizing a reasonable phase modulation and matching network, so that the circularly polarized work of the array antenna is realized, the anti-interference capability of the antenna is improved, and the problem of polarization mismatch caused by the rotation of the projectile body is solved.
Drawings
Fig. 1 is a side view of an assembly structure of the missile-borne antenna according to the invention.
Fig. 2 is a sectional view of an assembly structure of the missile-borne antenna according to the present invention.
Fig. 3 is a schematic top view of an assembly structure of the missile-borne antenna according to the present invention.
The antenna comprises a 1-columnar metal radiating vibrator, a 2-metal guiding vibrator, a 3-metal groove, a 4-phase modulation matching network board, a 5-metal shot and a 6-radio frequency connector.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The technical scheme of the invention is further explained by combining the drawings and the specific embodiments in the specification.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
A rotationally-symmetric missile-borne high-gain backward radiation phase modulation array antenna comprises: the antenna comprises a columnar metal radiating oscillator (1), a metal leading-in oscillator (2), a metal groove (3), a phase modulation matching network board (4), metal shot balls (5) and a radio frequency connector (6), wherein an antenna unit and the phase modulation matching network are integrally designed, the columnar metal radiating oscillator (1) and the metal leading-in oscillator (2) form an array element, the array element comprises four array elements in total, each array element is perpendicular to the outer surface of the metal shot balls (5), the four pairs of array elements are symmetrically arranged around the axial rotation of the metal shot balls (5), and every two of the four array elements are spaced by 90 degrees; the tuning and matching network board (4) is positioned at the center of the plane where the four columnar metal radiating vibrators (1) are located and axially intersected with the metal shot (5), the tuning and matching network board (4) is a one-power-division four-network, and four ports have the characteristic of equal amplitude and 90-degree sequential phase difference; the four array elements are respectively connected with four input ports of the phase modulation matching network board (4).
Fig. 1 and 2 are schematic side and cross-sectional views of the missile-borne antenna according to the present invention. The conical round table metal shot (5) with a certain inclination angle is of a hollow structure, the diameter of the upper surface of the metal shot (5) is smaller than that of the lower surface of the metal shot (5), and four planes are sequentially constructed on the arc of the outer surface of the metal shot (5) in a rotating mode at intervals of 90 degrees to form four metal grooves (3); the columnar metal radiation vibrator (1) comprises a metal vibrator and a medium, wherein the metal vibrator is coated with a layer of medium made of insulating materials, the cross section of the metal vibrator is polygonal (preferably cylindrical), the medium is made of insulating materials such as polytetrafluoroethylene or epoxy, the metal vibrator and the medium integrally penetrate through the outer surface of a metal shot (5), the metal vibrator and the medium are vertically installed and fixed on the bottom plane of a metal groove (3) constructed on the surface of the metal shot, and the metal vibrator extends inwards to be connected with the input end of a matching network board (4) in a cavity of the metal shot (5); the phase modulation matching network board (4) is installed and fixed on a metal frame of a metal shot inner cavity, and the radio frequency connector (6) is connected with an output port of the phase modulation matching network board (4) to form a total radio frequency port of the missile-borne antenna; the metal guide vibrator (2) is threaded, has a columnar structure of any polygon, is vertically installed and fixed on the bottom plane of a metal wall (3) constructed on the surface of a metal shot and is in short-circuit connection with the metal shot (5); on the surface of the circular truncated cone of the metal shot (5), the height of the metal leading vibrator (2) is lower than that of the columnar metal radiating vibrator (1), the distance between the columnar metal radiating vibrator (1) and the upper side wall of the metal groove (3) is larger than the distance between the columnar metal radiating vibrator (1) and the metal leading vibrator (2), the height of the columnar body of the metal leading vibrator (2) higher than the bottom plane of the metal groove (3) is smaller than the height of the columnar body of the metal radiating vibrator (1) higher than the bottom plane of the metal groove (3), and the metal radiating vibrator (1) and the metal leading vibrator (2) are on the same bus of the outer surface of the circular truncated cone of the metal shot (5).
Fig. 3 is a plan view of the missile-borne antenna according to the present invention. Take metal radiation oscillator (1), the metal of insulating medium to oscillator (2) and metal recess (3) and constitute ternary yagi antenna, and metal recess (3) directly act as yagi antenna reflector, and the redesign reflector no longer reduces the structure complexity and promotes the design reliability. The ternary yagi antenna is arranged around the metal shot (5) in an axially rotating and surrounding manner, and the crossed cross is arranged at an interval of 90 degrees, so that a quaternary array antenna is formed; the modulation matching network board (4) is provided with four input ports and an output port, the input ports are respectively connected with the four metal radiation oscillators, the amplitude phase characteristics of the four input ports are adjusted, so that the four input ports are equal in amplitude and have 90-degree phase difference in sequence, and the linear polarization and radiation characteristics of the array antenna are adjusted.
When the antenna is used, the resonant frequency and the impedance bandwidth of the antenna can be adjusted by changing the height and the diameter of the metal radiating oscillator; the backward radiation gain and the directional diagram characteristic of the antenna can be adjusted by changing the distance between the metal radiation oscillator and the metal guide oscillator as well as the metal arm of the shot; the polarization and radiation characteristics of the array antenna can be adjusted by changing the amplitude phase characteristics of the four input ports of the phase modulation matching network.
Claims (10)
1. The utility model provides a missile-borne high-gain backward radiation phase modulation array antenna that rotational symmetry arranged, includes column metal radiating element (1), metal and leads to oscillator (2), metal recess (3), phase modulation matching network board (4), metal shot (5) and radio frequency connector (6), its characterized in that:
the columnar metal radiating vibrators (1) and the metal guiding vibrators (2) of the rotationally-symmetrically-arranged missile-borne high-gain backward radiation phase modulation array antenna form an array element, four array elements are totally arranged, each array element is perpendicular to the outer surface of a metal shot (5), four pairs of array elements are rotationally and symmetrically arranged around the axial direction of the metal shot (5), and every two of the four array elements are spaced by 90 degrees; the tuning and matching network board (4) is positioned at the center of the plane where the four columnar metal radiating vibrators (1) are located and axially intersected with the metal shot (5), the tuning and matching network board (4) is a one-power-division four-network, and four ports have the characteristic of equal amplitude and 90-degree sequential phase difference; the four array elements are respectively connected with four input ports of the phase modulation matching network board (4).
2. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 1, further comprising:
the metal shot (5) is a conical round table with a hollow structure, the diameter of the upper surface of the metal shot (5) is smaller than that of the lower surface of the metal shot (5), and four planes are sequentially constructed on the arc of the outer surface of the metal shot (5) in a rotating mode at 90-degree intervals to form four metal grooves (3).
3. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 2, further comprising:
the columnar metal radiating vibrator (1) comprises a metal vibrator and a medium, wherein the metal vibrator is coated with a layer of medium made of insulating materials, the cross section of the metal vibrator is polygonal, the medium is made of insulating materials such as polytetrafluoroethylene or epoxy, the metal vibrator and the medium integrally penetrate through the outer surface of a metal shot (5), the metal vibrator and the medium are vertically installed and fixed on the bottom plane of a metal groove (3) constructed on the surface of the metal shot, and the metal vibrator extends inwards to be connected with the input end of a matching network board (4) in a cavity of the metal shot (5).
4. The rotationally symmetrically arranged missile-borne high-gain backward radiation phased array antenna of claim 3, wherein:
the metal oscillator is cylindrical.
5. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 1, further comprising:
the phase modulation matching network board (4) is installed and fixed on a metal frame of a metal shot inner cavity, and the radio frequency connector (6) is connected with an output port of the phase modulation matching network board (4) to form a total radio frequency port of the missile-borne antenna.
6. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 1, further comprising:
the metal guide vibrator (2) is threaded, is of a columnar structure of any polygon, is vertically installed and fixed on the bottom plane of a metal wall (3) constructed on the surface of the metal shot and is in short-circuit connection with the metal shot (5).
7. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 1, further comprising:
on the surface of the circular truncated cone of the metal shot (5), the axial height of the metal guide vibrator (2) is lower than that of the columnar metal radiation vibrator (1).
8. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 1, further comprising:
the distance between the columnar metal radiation vibrator (1) and the upper side wall of the metal groove (3) is larger than the distance between the columnar metal radiation vibrator (1) and the metal guide vibrator (2).
9. The rotationally symmetric missile-borne high-gain backward radiation phased array antenna of claim 1, further comprising:
the height of the columnar body of the metal leading vibrator (2) higher than the bottom plane of the metal groove (3) is less than the height of the columnar body of the columnar metal radiating vibrator (1) higher than the bottom plane of the metal groove (3).
10. The rotationally symmetrically arranged missile-borne high-gain backward radiation phased array antenna of claim 1, characterized in that:
the columnar metal radiating vibrator (1) and the metal guiding vibrator (2) are arranged on the same bus of the outer surface of the circular table of the metal shot (5).
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| CN202110021102.1A CN112864596B (en) | 2021-01-08 | 2021-01-08 | Missile-borne high-gain backward radiation phase modulation array antenna in rotational symmetry arrangement |
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| CN202110021102.1A CN112864596B (en) | 2021-01-08 | 2021-01-08 | Missile-borne high-gain backward radiation phase modulation array antenna in rotational symmetry arrangement |
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| CN103457017A (en) * | 2013-09-06 | 2013-12-18 | 南京理工大学 | Three-frequency dual polarization cone conformal micro-strip antenna array |
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| US6618017B1 (en) * | 2002-05-20 | 2003-09-09 | The United States Of America As Represented By The Secretary Of The Navy | GPS conformal antenna having a parasitic element |
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