CN115101926A - Dual-frequency VICTS phased-array antenna with orthogonal structure - Google Patents

Dual-frequency VICTS phased-array antenna with orthogonal structure Download PDF

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Publication number
CN115101926A
CN115101926A CN202211037728.2A CN202211037728A CN115101926A CN 115101926 A CN115101926 A CN 115101926A CN 202211037728 A CN202211037728 A CN 202211037728A CN 115101926 A CN115101926 A CN 115101926A
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China
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cts
antenna
frequency
dual
array
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Pending
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CN202211037728.2A
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Chinese (zh)
Inventor
罗忠超
郑天瑞
王致情
蔡河
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CHENGDU GUOHENG SPACE TECHNOLOGY ENGINEERING CO LTD
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CHENGDU GUOHENG SPACE TECHNOLOGY ENGINEERING CO LTD
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Priority to CN202211037728.2A priority Critical patent/CN115101926A/en
Publication of CN115101926A publication Critical patent/CN115101926A/en
Priority to CN202322199118.9U priority patent/CN220456659U/en
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • 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
    • H01Q3/32—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 mechanical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention discloses a dual-frequency VICTS phased array antenna with an orthogonal structure, and belongs to the technical field of antennas. The antenna comprises a radiation layer and a feed layer, wherein the radiation layer and the feed layer realize the change of the phase of the CTS antenna through relative rotation; the radiation layer is a CTS array and is realized by adopting an orthogonal structure, the specific CTS array of the orthogonal structure has two dimensions, and one dimension is emission along the positive direction of an X axis; the other dimension is along the positive direction of the Y axis for receiving, and the receiving and transmitting of the antenna are realized. The invention can realize the double-frequency common-caliber working antenna in any radio frequency/microwave frequency band, such as C, S, X, Ku, Ka, Q and other microwave frequency bands, and the wave beam has adjustability, concentrated energy, strong anti-interference performance, high directivity and high aperture efficiency.

Description

Dual-frequency VICTS phased-array antenna with orthogonal structure
Technical Field
The invention relates to the field of VICTS antennas, in particular to a dual-frequency VICTS phased-array antenna with an orthogonal structure.
Background
With the increasing requirements for wireless communication and the increasing level of science and technology, the antenna used for transmitting and receiving signals in wireless communication also faces various high requirements. A good antenna design may now have one or more of the special properties of low profile, miniaturization, ultra-wideband, high gain, large power capacity, multi-dimensional scanning, high polarization purity, etc., but these requirements are clearly not met by many conventional antennas.
The microstrip antenna is the most commonly used antenna because the microstrip antenna is simple to manufacture, low in cost, easy to produce in large batch, and low in profile, can be conformal to various skin structures, and can realize the performances of ultra wide band, multi-frequency band and the like due to different microstrip structures. However, as the frequency increases, the loss of the microstrip antenna increases greatly. In addition, the microstrip antenna has high sensitivity to size, a slight difference can cause performance deviation, and the microstrip antenna is also sensitive to the selected dielectric material, which brings trouble to processing.
Compared with microstrip antenna, the waveguide slot antenna has much smaller loss, larger power capacity and higher polarization purity. Meanwhile, some waveguide slot antennas also have the shaping capability, and have the advantages of generating a main lobe with narrower lobe width and the like. However, in the high-frequency operating band, the design of the waveguide slot antenna is quite complicated and the requirement for processing precision is quite high, and these disadvantages undoubtedly restrict the use of the waveguide slot antenna.
In a radar system, a conventional parabolic antenna is often used due to its high efficiency and good directional pattern characteristics, but the parabolic antenna also has the disadvantages of large volume, high weight, high cost, and the like.
In the early 90 s of the last century, Hughes airlines in the united states proposed a Continuous Transverse Stub antenna (CTS), also called a Flat Passive Phased Array (FPPA), which works in a principle similar to a conventional slot antenna, starting from the theory of leaky-wave antennas. But the difference is that the CTS antenna is formed by opening a continuous open stub penetrating the surface of a waveguide having a parallel plate transmission structure, and by this change, it can achieve an efficiency of approximately 70%, and has a very high gain, and can operate in a high frequency band, which is much stronger than that of the conventional slot antenna.
However, at present, the following problems still need to be solved:
1. the traditional microstrip antenna has large loss, low working efficiency and poor stability.
2. The traditional parabolic antenna has large volume and high weight.
3. The wave beam of the CTS antenna is fixed and unadjustable, and the working frequency band is single, so that the processing difficulty is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a dual-frequency VICTS phased array antenna with an orthogonal structure.
The purpose of the invention is realized by the following technical scheme:
a dual-frequency VICTS phased-array antenna with an orthogonal structure comprises a radiation layer and a feed layer, wherein the radiation layer and the feed layer realize the change of the phase of the CTS antenna through relative rotation; the radiation layer is a CTS array and is realized by adopting an orthogonal structure, the orthogonal structure is specifically that the CTS array has two dimensions, and one dimension is emission along the positive direction of an X axis; the other dimension is along the positive direction of the Y axis, and the receiving and transmitting common caliber of the antenna is realized.
Further, the CTS period of one dimension in the CTS array for transmission is P1, and the CTS period of one dimension for reception is P2; the periods P1 and P2 are specifically designed according to the antenna operating frequency, wherein 8mm < P1< P2<14 mm.
Furthermore, the radiation layer and the feed layer of the antenna are circular, the radius is D, the aperture D of the antenna is designed according to requirements, the aperture D is 300-800 mm, and the overall height of the antenna is 30-40 mm.
Further, the CTS array is filled with a liquid curable material.
Furthermore, the CTS array of the radiation layer adopts a unit modular design and is composed of a plurality of CTS unit modules, when the radiation layer is manufactured, the processed CTS unit modules are placed in an outer frame according to a preset structure, all CTS units are packaged and fixed through resin, and finally, a whole CTS array antenna surface is formed.
Further, the liquid curing material is a resin.
Furthermore, the feed layer is input by a standard rectangular waveguide, line source signals are generated by two reflecting surface type line source generators, and the CTS layer is excited through a two-dimensional slow wave structure, so that double-frequency signals are input.
The invention has the beneficial effects that:
1. the antenna can realize double-frequency common-caliber work, and one antenna surface can simultaneously realize signal transmission and signal reception.
2. The efficiency of the antenna is greatly improved, the highest efficiency can reach 70%, the CTS unit is a line source spanning the width of the array, the waveguide and the flat plate waveguide are used for feeding, compared with a microstrip antenna and a parabolic antenna, the loss is extremely low, and most of fed energy can be radiated.
3. The antenna adopts a pure mechanical structure, has special beam shape and concentrated energy, cannot be failed due to external strong interference, and has strong anti-interference capability.
4. The antenna adopts a flat design, the height of the antenna is less than or equal to 40mm, and a low profile can be realized.
5. Through the relative rotation of the CTS layer and the feed layer, the beam scanning of 7.5-80 degrees in the free space can be realized, and the scanning capability of a large pitch angle is far higher than that of an electronic phased array antenna.
6. The unique CTS unit modular design is adopted, the processing difficulty of the CTS antenna is reduced, and the CTS antenna has the advantage of low cost.
7. And the CTS unit is packaged by adopting a resin liquid curable material, so that the structural strength and the stability are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an overall structural diagram of a dual-band VICTS antenna.
Fig. 2 is a block diagram of a two-dimensional array of CTS without liquid curable material filling.
Fig. 3 is a block diagram of a two-dimensional array of CTS filled with a liquid curable material.
Fig. 4 is a partial 2 x 2CTS array cell structure.
Fig. 5 is a cross-sectional view of a two-dimensional CTS array.
Fig. 6 is a two-dimensional slow wave feed structure diagram.
Figure 7 is a schematic cross-sectional view of a two-dimensional feed layer.
Fig. 8 is a Ku band 10.7HZ pattern.
Fig. 9 is a Ku band 11.75HZ pattern.
Fig. 10 is a Ku band 12.75HZ pattern.
Fig. 11 is a Ka band 27.5HZ pattern.
Fig. 12 is a Ka band 29HZ pattern.
Fig. 13 is a Ka band 31HZ pattern.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
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.
In this embodiment, as shown in fig. 1, a dual-frequency VICTS phased-array antenna with an orthogonal structure, includes a radiation layer and a feed layer, where the radiation layer and the feed layer rotate relatively to change the phase of the CTS antenna, so as to implement beam scanning of 7.5 ° to 80 ° in a free space; the radiation layer is a CTS array (such as a CTS layer in fig. 1), and a high-isolation orthogonal structure is adopted to realize a dual-band common-caliber radiator so as to realize radiation of dual-band signals; the antenna is formed by metal processing combination, and aluminum is selected as a base material in the case.
The antenna is characterized in that a radiation layer and a feed layer of the antenna are circular, the radius of the radiation layer and the feed layer is D, the overall height of the antenna is not more than 40mm, the aperture D of the antenna is designed according to requirements, the aperture D is 300 mm-800 mm, the overall height of the antenna is 30mm-40mm, preferably, the height of the feed layer is 25mm, and the height of a CTS layer is 11.2 mm.
In another embodiment, as shown in fig. 2, the orthogonal structure is embodied as a CTS array having two dimensions, one dimension being in the positive direction of the X-axis, being transmit; the other dimension is along the positive direction of the Y axis for receiving, and the receiving and transmitting of the antenna are realized.
The CTS array is filled with a liquid curable material.
In another embodiment, as shown in fig. 4, the CTS array of the radiation layer is designed in a unit module, and is composed of a plurality of CTS unit modules, when the radiation layer is manufactured, the processed CTS unit modules are placed in an outer frame according to a predetermined structure, and each CTS unit is encapsulated and fixed by resin, so as to finally form a whole CTS array antenna surface (as shown in fig. 3). The size of each module is: l1 XH 1 XW 1, each module is less than 20mm, and each module is processed alone, greatly reduces the processing degree of difficulty. As shown in fig. 5, the CTS period for one dimension of transmission in the CTS array is P1, the CTS period for one dimension of reception is P2, and the periods P1 and P2 are specifically designed according to the antenna operating frequency, where 8mm < P1< P2<14 mm.
In another embodiment, the feeding layer is input by a standard rectangular waveguide, the receiving port waveguide model is WR42 (as the feeding port 2 in fig. 6), the transmitting port waveguide model is WR28 (as the feeding port 1 in fig. 6), a line source signal is generated by two reflecting surface type line source generators, and the CTS layer is excited through a two-dimensional slow wave structure (as shown in fig. 7) to realize the input of a dual-frequency signal; the feed layer realizes the simultaneous work of receiving and transmitting signals without mutual interference through two groups of orthogonal slow wave structural designs.
The antenna part is composed of two reflecting surface type waveguides, a two-dimensional orthogonal slow wave feed network and a two-dimensional orthogonal CTS array, feeding is carried out through the two orthogonal reflecting surface type waveguides respectively, equal-phase and specific power distribution feeding of the two-dimensional orthogonal slow wave feed network two-dimensional orthogonal CTS array antenna is achieved, cross-shaped wave beams used for receiving and transmitting are generated respectively, meanwhile, the relative included angle between a feed layer and a CTS layer is adjusted, and wave beam scanning in space is achieved.
The invention mainly comprises 1, a high-isolation orthogonal structure double-frequency common-caliber design scheme based on the VICTS antenna technology.
2. CTS array unit modular design scheme.
3. Design of liquid curable material to package CTS unit.
So as to achieve the following technical effects: 1. the double-frequency common-caliber working antenna can be realized in any radio frequency/microwave frequency band, such as C, S, X, Ku, Ka, Q and other microwave frequency bands, and the scheme is applied to the Ka frequency band.
2. The beam has adjustable cross-shaped beams, concentrated energy, strong interference immunity, high directivity and high aperture efficiency, for example, fig. 8, 9 and 10 are beam shape diagrams in each Ku frequency band direction, and fig. 11, 12 and 13 are beam shape diagrams in each Ka frequency band direction.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium and executed to implement the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (7)

1. A dual-frequency VICTS phased-array antenna with an orthogonal structure is characterized by comprising a radiation layer and a feed layer, wherein the radiation layer and the feed layer realize the change of the phase of the CTS antenna through relative rotation; the radiation layer is a CTS array and is realized by adopting an orthogonal structure, the specific CTS array of the orthogonal structure has two dimensions, and one dimension is emission along the positive direction of an X axis; the other dimension is along the positive direction of the Y axis for receiving, and the receiving and transmitting of the antenna are realized.
2. The dual-band CTS phased array antenna of claim 1, wherein the CTS array has a one-dimensional CTS period for transmission of P1 and a one-dimensional CTS period for reception of P2, wherein the periods P1 and P2 are specifically designed according to the antenna operating frequency, and wherein 8mm < P1< P2<14 mm.
3. The dual-frequency VICTS phased array antenna of an orthogonal structure as claimed in claim 1, wherein the radiation layer and the feed layer of the antenna are circular, wherein the antenna aperture D is designed according to requirements, the aperture D is 300 mm-800 mm, and the overall height of the antenna is 30mm-40 mm.
4. An orthogonal structure dual-frequency VICTS phased array antenna as claimed in claim 1 or 2, wherein said CTS array is filled with a liquid curing material.
5. The dual-frequency VICTS phased-array antenna with the orthogonal structure as claimed in claim 4, wherein the CTS array of the radiation layer is in a unit modular design and is composed of a plurality of CTS unit modules, when the radiation layer is manufactured, the processed CTS unit modules are placed in an outer frame according to a preset structure, all the CTS units are packaged and fixed through liquid curing materials, and finally, a whole CTS array antenna surface is formed.
6. An orthogonal structured dual frequency VICTS phased array antenna as claimed in claim 4 wherein said liquid curable material is a resin.
7. The dual-frequency VICTS phased array antenna with an orthogonal structure as claimed in claim 1, wherein the feed layer is inputted by a standard rectangular waveguide, and generates a line source signal through two reflecting surface type line source generators, and the CTS layer is excited by a two-dimensional slow wave structure to realize the input of dual-frequency signals.
CN202211037728.2A 2022-08-29 2022-08-29 Dual-frequency VICTS phased-array antenna with orthogonal structure Pending CN115101926A (en)

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CN202322199118.9U CN220456659U (en) 2022-08-29 2023-08-15 Dual-frenquency VICTS phased array antenna

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Publication number Priority date Publication date Assignee Title
CN116014460A (en) * 2023-03-27 2023-04-25 成都国恒空间技术工程股份有限公司 Dual-frenquency VICTS phased array antenna

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Publication number Priority date Publication date Assignee Title
CN116014460A (en) * 2023-03-27 2023-04-25 成都国恒空间技术工程股份有限公司 Dual-frenquency VICTS phased array antenna

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