CN116864980A - Dual-polarized array antenna, signal transmission system and method - Google Patents
Dual-polarized array antenna, signal transmission system and method Download PDFInfo
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000006880 cross-coupling reaction Methods 0.000 claims abstract description 31
- 230000009977 dual effect Effects 0.000 claims abstract description 31
- 230000010287 polarization Effects 0.000 claims description 31
- 238000005530 etching Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 230000005855 radiation Effects 0.000 abstract description 20
- 238000002955 isolation Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 18
- 230000005284 excitation Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000005388 cross polarization Methods 0.000 description 4
- 238000011166 aliquoting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0233—Horns fed by a slotted waveguide array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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Abstract
The application discloses a dual-polarized array antenna, a signal transmission system and a signal transmission method. Wherein, dual polarized array antenna includes: e face merit divides ware, and feed network, series feed network, cross coupling seam layer and horn antenna layer that connects gradually from bottom to top, and wherein, E face merit divides the ware to include: the first E face power divider and the second E face power divider, the first E face power divider and the second E face power divider all include: one port located below and two ports located above; the parallel feed network comprises: the first parallel-feeding network and the second parallel-feeding network are positioned on the same plane; first oneThe initial port of the parallel feed network is connected with two ports above the first E-plane power divider; the initial port of the second parallel feed network is connected with two ports above the second E-plane power divider; the whole series feed network is rectangular, and four sides of the series feed network are respectively provided with 2 N And the serial feed network is provided with a metalized through hole. The application solves the technical problems of complex structure of the parallel feed network, narrow working band of the series feed network and frequency shift of the radiation direction required by the dual-polarized array antenna.
Description
Technical Field
The application relates to the technical field of antennas, in particular to a dual-polarized array antenna, a signal transmission system and a signal transmission method.
Background
The common-frequency simultaneous full duplex technology is used as one of the key technologies of 5G mobile communication, can realize double frequency spectrum utilization rate, and is favored by industry. Dual polarized array antennas are a simple implementation of the co-frequency simultaneous full duplex technology, which is capable of generating two orthogonally polarized radiation waves, which is one of the focus of research.
Parallel feeding, series feeding are common ways in dual polarized array antenna designs. The parallel-fed dual-polarized array antenna can realize broadband and stable radiation directions, but two independent feed networks are often needed to excite two orthogonal polarized radiation waves respectively, so that the structure is complex, and the processing requirement is high. The dual polarized array antenna with serial feed has the disadvantages of relatively simple feed network, narrow working band, scanning radiation direction along with frequency, and the like.
Therefore, in the related art, there are technical problems that the parallel feed network structure required by the dual-polarized array antenna is complex, and the series feed network has a narrow working band and frequency shift in the radiation direction.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a dual-polarized array antenna, a signal transmission system and a signal transmission method, which are used for at least solving the technical problems that a parallel feed network structure required by the dual-polarized array antenna is complex, a series feed network working frequency band is narrow, and a radiation direction is frequency-shifted.
According to an aspect of an embodiment of the present application, there is provided a dual polarized array antenna including: from bottom to topThe E-plane power divider is connected in sequence, and comprises a parallel feed network, a series feed network, a cross coupling seam layer and a horn antenna layer, wherein the E-plane power divider comprises: the first E face power divider and the second E face power divider, the first E face power divider and the second E face power divider all include: one port located below and two ports located above; the parallel feed network comprises: the first parallel-feeding network and the second parallel-feeding network are positioned on the same plane; the initial port of the first parallel-fed network is connected with two ports above the first E-plane power divider; the initial port of the second parallel feed network is connected with two ports above the second E-plane power divider; the whole series feed network is rectangular, and four sides of the series feed network are respectively provided with 2 N And a plurality of ports, wherein a series feed network is provided with a metalized through hole, and N is a positive integer.
Optionally, a port of the first E-plane power divider located below is used for inputting a signal for exciting the first polarization direction; one port of the second E-plane power divider positioned below is used for inputting a signal for exciting a second polarization direction; wherein the first polarization direction and the second polarization direction are orthogonal to each other.
Optionally, the E-plane power divider has steps etched therein.
Optionally, the turning part of the parallel feed network is subjected to corner cutting treatment.
Optionally, an etching notch is arranged at a connection part for signal halving in the parallel feed network.
Optionally, the providing a metallized via on the series feed network includes: a metallized through hole is arranged at the beginning of a port on the side edge of the series feed network; metallized through holes are arranged at two sides of the central line of the series feed network.
Optionally, 4 are uniformly distributed on the cross coupling seam layer N And a cross coupling slit.
Optionally, 4 are uniformly distributed on the horn antenna layer N And a horn antenna.
Optionally, an etching notch is formed in the middle of the side edge of the horn antenna.
According to another aspect of the embodiment of the present application, there is also provided a signal transmission system including: the active circuit and the dual-polarized array antenna of any one of the above, wherein the active circuit and the dual-polarized array antenna are interconnected through a transition component.
According to another aspect of the embodiment of the present application, there is also provided a signal transmission method, including: inputting signals through a port of the E-plane power divider positioned below; transmitting the constant amplitude reverse phase signal corresponding to the signal to the initial port of the parallel feed network through two ports of the E-plane power divider positioned above; equally dividing the constant-amplitude inverted signal through a parallel feed network to obtain a plurality of equally divided signals, and transmitting the equally divided signals to a series feed network; transmitting the aliquoting signals to the horn antenna layer through the cross coupling seam layer through a series feed network; the halved signal is radiated into the air through the feedhorn layer.
In the embodiment of the application, a mode of combining serial and parallel feeding is adopted, and the substrates of the E-plane power divider, the parallel feeding network, the serial feeding network, the cross coupling seam layer and the horn antenna layer are respectively etched and plated with gold to form an air cavity, and then the parts are sequentially connected in a hot pressing mode to form the dual-polarized waveguide antenna with compact structure and low section. The two orthogonal polarization radiation modes share the series feed network and the horn antenna, so that the overall structure is simplified; the double differential feed ensures high gain, high port isolation and high polarization isolation of the antenna; and the transition design of the metallized through holes and the like realizes the broadband. In summary, the dual-polarized array antenna has the technical effects of low profile, high gain, high port isolation, high polarization isolation, wide frequency band and the like, and solves the technical problems of complex parallel feed network structure, narrow series feed network working band and radiation direction frequency shift required by the dual-polarized array antenna.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic diagram of the overall structure of a dual polarized array antenna according to an embodiment of the present application;
FIG. 2 is a top view of a parallel feed network provided in accordance with an embodiment of the present application;
FIG. 3 is a three-dimensional perspective view of a parallel feed network provided in accordance with an embodiment of the present application;
FIG. 4 is a schematic diagram of a first E-plane power divider and a first parallel-fed network provided in accordance with an embodiment of the present application;
FIG. 5 is a schematic diagram of a second E-plane power divider and a second parallel feed network provided in accordance with an embodiment of the present application;
FIG. 6 is a schematic diagram of a series feed network provided in accordance with an embodiment of the present application;
fig. 7 is a schematic view of a cross-coupling seam layer provided according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a feedhorn layer provided in accordance with an embodiment of the present application;
fig. 9 is a schematic diagram of S parameters of a dual polarized waveguide array antenna according to an embodiment of the present application;
fig. 10 is a gain schematic diagram of a dual polarized waveguide array antenna according to an embodiment of the present application;
FIG. 11 is a main polarization (x-polarization) and cross polarization (y-polarization) patterns (first port excitation) at 140GHz provided in accordance with an embodiment of the application;
FIG. 12 is a main polarization (y-polarization) and cross polarization (x-polarization) patterns (second port excitation) at 140GHz provided in accordance with an embodiment of the application;
fig. 13 is a schematic diagram of radiation efficiency of a dual polarized waveguide array antenna according to an embodiment of the present application;
FIG. 14 is a schematic diagram of a signal transmission system provided in accordance with an embodiment of the present application;
fig. 15 is a flowchart of a signal transmission method according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The common-frequency simultaneous full duplex technology is used as one of the key technologies of 5G mobile communication, can realize double frequency spectrum utilization rate, and is favored by industry. Dual polarized array antennas are a simple implementation of the co-frequency simultaneous full duplex technology, which is capable of generating two orthogonally polarized radiation waves, which is one of the focus of research.
Parallel feeding, series feeding are common ways in dual polarized array antenna designs. The parallel-fed dual-polarized array antenna can realize broadband and stable radiation directions, but two independent feed networks are often needed to excite two orthogonal polarized radiation waves respectively, so that the structure is complex, and the processing requirement is high. The dual polarized array antenna with serial feed has the disadvantages of relatively simple feed network, narrow working band, scanning radiation direction along with frequency, and the like.
In addition, in dual polarized array antenna design, gain, port isolation, and polarization isolation are also important indicators.
In view of the above problems, an embodiment of the present application provides a dual polarized array antenna, and fig. 1 is a dual polarized array antenna according to an embodiment of the present applicationA schematic diagram of the overall structure of the column antenna, as shown in fig. 1, the dual polarized array antenna includes: e face merit divides ware, and feed network, series feed network, cross coupling seam layer and horn antenna layer that connects gradually from bottom to top, and wherein, E face merit divides the ware to include: the first E face power divider and the second E face power divider, the first E face power divider and the second E face power divider all include: one port located below and two ports located above; the parallel feed network comprises: the first parallel-feeding network and the second parallel-feeding network are positioned on the same plane; the initial port of the first parallel-fed network is connected with two ports above the first E-plane power divider; the initial port of the second parallel feed network is connected with two ports above the second E-plane power divider; the whole series feed network is rectangular, and four sides of the series feed network are respectively provided with 2 N And a plurality of ports, wherein a series feed network is provided with a metalized through hole, and N is a positive integer.
Through the arrangement, the E-plane power divider, the parallel feed network, the series feed network, the cross coupling seam layer and the base plate of the horn antenna layer are respectively etched and plated with gold to form an air cavity, and then the parts are sequentially connected in a hot pressing mode to form the dual-polarized waveguide antenna with a compact structure and a low section. The two orthogonal polarization radiation modes share the series feed network and the horn antenna, so that the overall structure is simplified; the double differential feed ensures high gain, high port isolation and high polarization isolation of the antenna; and the transition design of the metallized through holes and the like realizes the broadband. In summary, the dual-polarized array antenna has the technical effects of low profile, high gain, high port isolation, high polarization isolation, wide frequency band and the like, and solves the technical problems of complex parallel feed network structure, narrow series feed network working band and radiation direction frequency shift required by the dual-polarized array antenna.
The first port in fig. 1 is one port of the first E-plane power divider located below, which is also a first feeding port, and the second port is one port of the second E-plane power divider located below, which is also a second feeding port.
As an alternative embodiment, a port of the first E-plane power divider located below is used for inputting a signal for exciting the first polarization direction; one port of the second E-plane power divider positioned below is used for inputting a signal for exciting a second polarization direction; wherein the first polarization direction and the second polarization direction are orthogonal to each other. Fig. 2 is a top view of a parallel-fed network provided according to an embodiment of the present application, fig. 3 is a three-dimensional perspective view of a parallel-fed network provided according to an embodiment of the present application, as shown in fig. 3, 21 and 31 are a first parallel-fed network and a second parallel-fed network, 22 and 32 are a first E-plane power divider and a second E-plane power divider, respectively, one port of the first E-plane power divider and the second E-plane power divider located below may be used to transmit two signals orthogonally polarized to each other, implementing dual polarization, for example, one port of the first E-plane power divider located below may be used to receive an excitation signal in the x-direction, one port of the second E-plane power divider located below may be used to receive an excitation signal in the y-direction, and so on.
It should be noted that, in this embodiment, the E-plane power divider includes one port located at the lower side and two ports located at the upper side, so when a signal is transmitted to the parallel feed network through the E-plane power divider, the signal may be divided into two paths of signals with equal amplitude and opposite phase, for example, one port located at the lower side of the first E-plane power divider receives an excitation signal in the x direction first, and then two paths of equal amplitude and opposite phase signals corresponding to the excitation signal in the x direction are transmitted to the parallel feed network through two ports located at the upper side of the first E-plane power divider, and so on, where the second E-plane power divider is the same.
As an alternative embodiment, the E-side power divider is internally etched with a step. Fig. 4 is a schematic diagram of a first E-plane power divider and a first parallel-fed network provided according to an embodiment of the present application, fig. 5 is a schematic diagram of a second E-plane power divider and a second parallel-fed network provided according to an embodiment of the present application, a concave portion in a lower picture shown in fig. 4 and fig. 5 corresponds to one port of the first E-plane power divider and the second E-plane power divider located below and two ports located above, respectively, and as shown in fig. 4 and fig. 5, by providing an etching step inside the E-plane power divider, impedance matching of an input port of the E-plane power divider can be improved, where the position of the etching step can be specifically set according to practical applications, for example, etching can be performed in the middle of the E-plane power divider, and so on. In addition, the E-plane power splitters may be arranged longitudinally, and the input port (one port located below) may be designed as a D-band standard waveguide port to facilitate connection with a standard waveguide, and the output port (two ports located above) may be reduced in height to reduce the cross-sectional height of the structure.
The upper pictures shown in fig. 4 and 5 are a first parallel-feed network and a second parallel-feed network, respectively, as shown in fig. 4 and 5, the initial ports of the first parallel-feed network and the second parallel-feed network are respectively located at the central positions of the initial ports, the first parallel-feed network and the second parallel-feed network respectively receive signals from the first E-plane power divider and the second E-plane power divider based on the initial ports and divide the signals equally, after the signals enter the parallel-feed network from the initial ports, the signals are equally divided through branches in the parallel-feed network, and then a plurality of end ports corresponding to the sides of the signals are output equally divided, taking the upper side of the first parallel-feed network in fig. 4 as an example, after the signals are received, the signals are finally divided into 8 paths, the signals are output from 8 end ports on the upper side of the first parallel-feed network, and the second parallel-feed network is the same.
It should be noted that the number of ports on the side edges of the parallel-fed network and the series-fed network may be specifically set according to practical application requirements, and only the number of single-side end ports of the parallel-fed network and the number of single-side ports of the series-fed network are controlled to be equal to ensure that the signal can be smoothly transmitted, for example, the number of output ports on one side edge of the parallel-fed network is 2 N The number of ports on one side of the series feed network is likewise 2 N 。
As an alternative embodiment, the turns of the parallel feed network are subjected to a corner cut. Impedance matching can be achieved by chamfering the turns of the parallel feed network.
As an alternative embodiment, the joints in the parallel feed network for signal halving are provided with etched recesses. As shown in the upper pictures in fig. 4 and 5, when signals are equally divided by branches in the parallel feed network, the junctions of the adjacent branches are provided with etched notches, which can be used to complete impedance matching.
As an alternative embodiment, providing the series feed network with metallized vias includes: a metallized through hole is arranged at the beginning of a port on the side of the series feed network; metallized through holes are arranged at two sides of the central line of the series feed network. Fig. 6 is a schematic diagram of a series feed network according to an embodiment of the present application, as shown in fig. 6, where a metallized through hole is disposed on the series feed network, where the metallized through hole at the beginning of a port on a side of the series feed network can be used to achieve impedance matching at the port, and the metallized through holes on two sides of a center line of the series feed network can be used to widen an operating band, so as to overcome the problems of narrow operating band and unstable radiation direction when the series feed network is used in the related art.
As an alternative embodiment, 4 are uniformly distributed on the cross coupling seam layer N And a cross coupling slit. Fig. 7 is a schematic diagram of a cross coupling slot layer provided according to an embodiment of the present application, as shown in fig. 7, in which a plurality of uniformly arranged cross coupling slots are disposed in the cross coupling slot layer, and the cross coupling slots are used for coupling and transmitting signals output by a series feed network to a feedhorn layer. In addition, the number of the cross coupling slots is in corresponding relation with the ports of the series feed network, i.e. the cross coupling slot layers are uniformly arranged on the basis that the number of the cross coupling slots on the side edge of the cross coupling slot layers is consistent with the number of the ports on the side edge of the series feed network, for example, each side edge of the series feed network is provided with 2 N Each side edge of the cross coupling seam layer is also provided with 2 ports N The cross coupling slits, i.e. 4 in total N A cross coupling slot, etc.
As an alternative embodiment, 4 are uniformly distributed on the feedhorn layer N And a horn antenna. Fig. 8 is a schematic view of a feedhorn layer provided according to an embodiment of the present application, and as shown in fig. 8, feedhorns having the same number of slots as the number of slots are provided in the feedhorn layer, for radiating signals from the slot layer into the air. In addition, the number and arrangement modes of the horn antennas are in one-to-one correspondence with the cross coupling gaps in the cross coupling gap layer.
As an alternative embodiment, the horn antenna is provided with an etched recess in the middle of its side. As shown in fig. 8, the middle of the side of each of the feedhorns in the feedhorn layer is provided with an etched notch that can be used to mitigate impedance mismatch between the antenna and air.
It should be noted that, the dual polarized array antenna in the embodiment of the present application may be used as a receiving antenna and may also be used as a transmitting antenna, and the working principle follows the rule of transception reciprocity.
Fig. 9 is an S-parameter schematic diagram of a dual polarized waveguide array antenna with serial-parallel combined feed according to an embodiment of the present application, as shown in fig. 9, the bandwidth of-10 dB impedance of the first port covers 132.5-150.7GHz, the relative bandwidth is 12.9%, the bandwidth of-10 dB impedance of the second port covers 131-150GHz, and the relative bandwidth is 13.5%. In the impedance bandwidth range of-10 dB, the port isolation of the first port and the second port is better than 46dB, namely the serial-parallel combined feed dual-polarized waveguide array antenna provided by the embodiment of the application realizes high port isolation. Wherein the S parameter is a scattering parameter.
Fig. 10 is a schematic gain diagram of a dual-polarized waveguide array antenna with serial-parallel combined feed according to an embodiment of the present application, as shown in fig. 10, when the first port is excited, the maximum gain occurs at 143GHz and is 24.9dBi, and when the second port is excited, the maximum gain occurs at 141.8GHz and is 24.8dBi, that is, the dual-polarized waveguide array antenna with serial-parallel combined feed according to an embodiment of the present application achieves high gain.
Fig. 11 is a main polarization (x-polarization) and cross polarization (y-polarization) pattern (first port excitation) at 140GHz provided according to an embodiment of the present application, and fig. 12 is a main polarization (y-polarization) and cross polarization (x-polarization) pattern (second port excitation) at 140GHz provided according to an embodiment of the present application, as shown in fig. 11 and 12, when the first port is excited, the x-polarization is the main polarization, at the theta=0 direction, the polarization isolation is 49.9dBi, and when the second port is excited, the y-polarization is the main polarization, at the theta=0 direction, the polarization isolation is 49.7dBi, that is, the serial-parallel combined feed dual-polarized waveguide array antenna provided by the embodiment of the present application achieves high polarization isolation.
Fig. 13 is a schematic diagram of radiation efficiency of a dual polarized waveguide array antenna according to an embodiment of the present application, as shown in fig. 13, when the first port is excited, the maximum radiation efficiency occurs at 136.3GHz, which is 85.3%, and when the second port is excited, the maximum gain occurs at 138.5GHz, which is 85%.
In summary, the dual-polarized array antenna provided by the embodiment of the application has the advantages of low profile, high gain, high port isolation, high polarization isolation, wide frequency band and the like, and can be applied to the front end of a duplex radio frequency system in millimeter wave and terahertz frequency bands.
According to an embodiment of the present application, there is further provided a signal transmission system, fig. 14 is a schematic diagram of the signal transmission system provided according to the embodiment of the present application, and as shown in fig. 14, the signal transmission system includes: the dual-polarized waveguide array antenna comprises an active circuit and any one of the dual-polarized waveguide array antennas, wherein the active circuit and the dual-polarized waveguide array antenna are interconnected through a transition component. The system is based on the connection relation between the active circuit and the dual-polarized waveguide array antenna, and can transmit the signal of the active circuit through the dual-polarized waveguide array antenna with high efficiency. Meanwhile, based on the dual-polarized waveguide array antenna in the embodiment of the application, the E-plane power divider is longitudinally arranged, the input port is designed as a D-band standard waveguide port so as to be convenient to connect with a standard waveguide, the height of an internal transmission waveguide channel is reduced so as to reduce the section of the antenna, and in addition, the center part of the E-plane power divider is etched with a step for improving the impedance matching of the input port. After passing through the E-plane power divider, the signals are changed into two paths of signals with equal amplitude and opposite phase, and the two paths of signals are input into a parallel feed network. In a parallel feed network, a series of careful designs include notches at the junction, cut angles at the turns, and notches at the branches for impedance matching of the input ports and 1-way split 8-way constant amplitude in-phase output and impedance matching. The output of the parallel feed network is connected through the input of the series feed network. In the series feed network, metallized through holes designed at the port connection are used for port impedance matching, while metallized through holes at both sides of the center line are used for widening the working frequency band. The signals in the series feed network are fed into the feedhorns via the cross coupling slots. In a horn antenna, the sides are designed with rectangular notches to mitigate the impedance mismatch of the antenna and air.
The transition component may be a microstrip probe.
In accordance with an embodiment of the present application, there is provided a method embodiment of signal transmission, it being noted that the steps shown in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order other than that shown or described herein.
Fig. 15 is a flowchart of a signal transmission method according to an embodiment of the present application, as shown in fig. 15, the method includes the following steps:
step S1502, inputting a signal through a port of the E-plane power divider located below;
step S1504, transmitting the constant amplitude reverse phase signal corresponding to the signal to the initial port of the parallel feed network through two ports of the E-plane power divider positioned above;
step S1506, equally dividing the constant amplitude inverted signal through the parallel feed network to obtain a plurality of equally divided signals, and transmitting the equally divided signals to the series feed network;
step S1508, transmitting the aliquoting signals to the horn antenna layer through the cross coupling seam layer through the series feed network;
in step S1510, the aliquoting signal is radiated into the air through the horn antenna layer.
Through the steps, the E-plane power divider can divide the E-plane power divider into two paths of signals with equal amplitude and opposite phase, each path of signals is divided equally through the parallel feed network, the divided signals are connected to the series feed network, and the signals are transmitted to the horn antenna through the cross coupling joint and radiated in the air. The dual-polarized waveguide array antenna has the technical effects of low profile, high gain, high port isolation, high polarization isolation, wide frequency band and the like, and solves the technical problems that the parallel feed network structure required by the dual-polarized array antenna is complex, the working frequency band of the series feed network is narrow, and the radiation direction is frequency-shifted.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (11)
1. A dual polarized array antenna, comprising: an E-plane power divider, a parallel feed network, a series feed network, a cross coupling seam layer and a horn antenna layer which are sequentially connected from bottom to top,
the E-plane power divider comprises: the first E-plane power divider and the second E-plane power divider, wherein the first E-plane power divider and the second E-plane power divider both comprise: one port located below and two ports located above;
the parallel feed network comprises: the first parallel-feeding network and the second parallel-feeding network are positioned on the same plane; the initial port of the first parallel-fed network is connected with two ports above the first E-plane power divider; the initial port of the second parallel feed network is connected with two ports above the second E-plane power divider;
the whole series feed network is rectangular, and 2 sides of the series feed network are respectively provided with N And the serial feed network is provided with a metalized through hole, wherein N is a positive integer.
2. The dual polarized array antenna of claim 1, wherein,
one port of the first E-plane power divider positioned below is used for inputting signals for exciting a first polarization direction;
one port of the second E-plane power divider positioned below is used for inputting signals for exciting a second polarization direction;
wherein the first polarization direction and the second polarization direction are orthogonal to each other.
3. The dual polarized array antenna of claim 1, wherein,
and etching steps in the E-plane power divider.
4. The dual polarized array antenna of claim 1, wherein,
and the turning part of the parallel feed network is subjected to corner cutting treatment.
5. The dual polarized array antenna of claim 1, wherein,
and etching notches are arranged at the connecting positions of the parallel feed network for signal halving.
6. The dual polarized array antenna of claim 1, wherein,
the series feed network is provided with a metalized through hole comprising: a metallized through hole is arranged at the beginning of a port on the side edge of the series feed network; and metallized through holes are arranged at two sides of the central line of the series feed network.
7. The dual polarized array antenna of claim 1, wherein,
4 are uniformly distributed on the cross coupling seam layer N And a cross coupling slit.
8. The dual polarized array antenna of claim 1, wherein,
4 are uniformly distributed on the horn antenna layer N And a horn antenna.
9. The dual polarized array antenna of claim 9, wherein,
and an etching notch is formed in the middle of the side edge of the horn antenna.
10. A signal transmission system, comprising: an active circuit and the dual polarized array antenna of any one of claims 1 to 9, wherein the active circuit and the dual polarized array antenna are interconnected by a transition assembly.
11. A method of signal transmission, comprising:
inputting signals through a port of the E-plane power divider positioned below;
transmitting the constant amplitude reverse phase signal corresponding to the signal to the initial port of the parallel feed network through two ports of the E-plane power divider positioned above;
equally dividing the constant-amplitude reverse phase signals through the parallel feed network to obtain a plurality of equally divided signals, and transmitting the equally divided signals to a series feed network;
transmitting the halved signals to a horn antenna layer through a cross coupling seam layer through the series feed network;
radiating the aliquot of the signal into air through the feedhorn layer.
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| CN202310769515.7A CN116864980A (en) | 2023-06-27 | 2023-06-27 | Dual-polarized array antenna, signal transmission system and method |
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| CN202310769515.7A CN116864980A (en) | 2023-06-27 | 2023-06-27 | Dual-polarized array antenna, signal transmission system and method |
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