Dual-polarized antenna device
By integrating horizontal and vertical microstrip lines into a large-array antenna and employing back-feed connection and coupling transmission methods, the problems of increased waveguide quantity and difficult arrangement were solved, achieving efficient radio frequency signal transmission.
Patent Information
- Application Number
- CN202520135590.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-21
AI Technical Summary
When existing phased array antennas are used in large arrays, the number of waveguides needs to be increased to achieve dual polarization, which leads to an increase in array size. Furthermore, the arrangement of radiating elements and transmission lines is difficult in large arrays with side-feed mode, and resistance is easily generated when connecting cables.
Horizontal and vertical microstrip lines are integrated onto the same substrate, using a back-feed connection and coupled transmission method. The power amplifier is connected through the back of the substrate, and the radio frequency signal is transmitted to the radiating unit through the horizontal and vertical microstrip lines in a coupled manner.
It solves the problem of difficult arrangement of radiating elements and transmission lines in large-array antennas, avoids the resistance when connecting cables, and improves radio frequency efficiency.
Smart Images
Figure CN223680392U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of microwave antennas, and particularly relates to a dual-polarized antenna device. BACKGROUND
[0002] The existing phased array antenna is basically realized based on a waveguide. In order to realize dual polarization, the size of the array surface will be greatly increased because a single waveguide cannot realize dual linear polarization. Therefore, in order to realize dual linear polarization by using a waveguide, the number of waveguides must be increased and the polarization mode must be changed, which will increase the number of waveguides by one. Using a microstrip patch antenna to realize dual polarization can avoid such problems. A patch unit can realize vertical linear polarization and horizontal linear polarization at the same time. Therefore, for array arrangement, the distance between horizontal and vertical polarization is not a problem. As long as the array surface is square, the two polarization modes can be realized at the same time.
[0003] The existing dual-polarized patch antenna mostly adopts a side-feeding mode. In the case of a small array surface, there is no problem. In the case of a large array surface, such as a 48*48 antenna array surface, if side-feeding is adopted, the radiation unit and the transmission line cannot be well arranged, which will cause a trade-off. In addition, resistance will occur when connecting the cable. SUMMARY
[0004] The present application aims to at least solve one of the above technical problems in the prior art to some extent. To this end, the embodiments of the present application provide a dual-polarized antenna device, which integrates horizontal microstrip lines and vertical microstrip lines on the same substrate, adopts a back-feeding connection mode and a coupled transmission mode, and well solves the problem that the radiation unit and the transmission line cannot be well arranged in the case of a large array surface.
[0005] A dual-polarized antenna device comprises
[0006] a substrate;
[0007] The antenna module comprises a radiation unit, a horizontal microstrip line and a vertical microstrip line, the radiation unit is a square structure, the radiation unit is arranged on the front surface of the substrate, one end of the horizontal microstrip line is a T-shaped horizontal end, the other end is a horizontal connecting end, the horizontal microstrip line is arranged on the front surface of the substrate, the T-shaped horizontal end is parallel to the left side or the right side of the radiation unit and spaced from each other, the T-shaped horizontal end can transmit radio frequency signals to the radiation unit by coupling, the substrate is provided with a first through hole corresponding to the horizontal connecting end, the horizontal connecting end extends to the back surface of the substrate through the first through hole, one end of the vertical microstrip line is a T-shaped vertical end, the other end is a vertical connecting end, the vertical microstrip line is arranged on the front surface of the substrate, the T-shaped vertical end is parallel to the upper side or the lower side of the radiation unit and spaced from each other, the T-shaped vertical end can transmit radio frequency signals to the radiation unit by coupling, the substrate is provided with a second through hole corresponding to the vertical connecting end, the vertical connecting end extends to the back surface of the substrate through the second through hole.
[0008] In an optional or preferred embodiment, the side length of the radiation unit is 10.2 mm.
[0009] In an optional or preferred embodiment, three antenna modules are arranged on the substrate, and each antenna module is arranged along the length direction of the substrate.
[0010] In an optional or preferred embodiment, mounting holes are arranged between adjacent two substrates on the substrate.
[0011] In an optional or preferred embodiment, the dielectric constant of the substrate is 2.2.
[0012] In an optional or preferred embodiment, the substrate is an F4BTMS plate with a loss factor of 0.0009 when the radio frequency signal frequency is 10 GHz.
[0013] In an optional or preferred embodiment, the thickness of the substrate is 1.016 mm.
[0014] In an optional or preferred embodiment, the substrate is a quartz glass fiber plate.
[0015] Based on the technical scheme, during use, the power amplifier is connected to the horizontal terminal and the vertical terminal from the back of the substrate, thereby realizing a back-fed connection mode, the radio frequency signal is transmitted to the radiating unit in a coupled manner through the horizontal microstrip line, the radio frequency signal is transmitted to the radiating unit in a coupled manner through the vertical microstrip line, and finally the radio frequency signal is radiated outward through the radiating unit. The horizontal microstrip line and the vertical microstrip line are integrated on the same substrate, the back-fed connection mode and the coupled transmission mode are adopted, and the problem that the radiating unit and the transmission line cannot be well arranged when a large array antenna is used can be well solved, and resistance when connecting the cable is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0016] The application will be further described below with reference to the drawings and embodiments.
[0017] Figure 1 is a front structure schematic diagram of a dual-polarized antenna device provided by an embodiment of the application;
[0018] Figure 2 is a back structure schematic diagram of a dual-polarized antenna device provided by an embodiment of the application. DETAILED DESCRIPTION
[0019] In order to enable persons skilled in the art to better understand the technical solutions in the application, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by persons skilled in the art without creative work should fall within the protection scope of the application.
[0020] The embodiments of the application will be further described in detail below with reference to the drawings and embodiments. The following embodiments are used to illustrate the application, but cannot be used to limit the scope of the application.
[0021] In the description of the embodiments of the application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0022] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "connected", "connected to", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0023] In the embodiments of the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.
[0024] The existing phased array antenna is basically realized based on waveguide. In order to realize dual polarization, the size of the array will be greatly increased because a single waveguide cannot realize dual linear polarization. Therefore, in order to realize dual linear polarization with waveguide, the number of waveguides must be increased and the polarization mode must be changed to realize it, which will increase the number of waveguides by one. Using microstrip patch antenna to realize dual polarization can avoid such problems. A patch unit can realize vertical linear polarization and horizontal linear polarization at the same time. Therefore, for array arrangement, there is no need to consider the distance between horizontal and vertical polarization. As long as the array is square, both polarization modes can be realized at the same time.
[0025] Most of the existing dual-polarized patch antennas use side feeding. In the case of small array, there is no problem. In the case of large array, such as a 48*48 antenna array, if side feeding is used, the radiation unit and the transmission line cannot be well arranged, and there will be a trade-off. Moreover, resistance will occur when connecting the cable.
[0026] Reference Figure 1 , Figure 2 The present application provides a dual-polarized antenna device, which comprises a substrate 100 and an antenna module 200.
[0027] The antenna module 200 comprises a radiation unit 210, a horizontal microstrip line 220 and a vertical microstrip line 230. The radiation unit 210 is in a square structure and is arranged on the front surface of the substrate 100. One end of the horizontal microstrip line 220 is a T-shaped horizontal end 221, and the other end is a horizontal connecting end 222. The horizontal microstrip line 220 is arranged on the front surface of the substrate 100. The T-shaped horizontal end 221 is parallel to the left side or the right side of the radiation unit 210 and is spaced apart from each other. The T-shaped horizontal end 221 can transmit radio frequency signals to the radiation unit 210 in a coupled manner. The substrate 100 is provided with a first through hole 110 corresponding to the horizontal connecting end 222. The horizontal connecting end 222 extends to the back surface of the substrate 100 through the first through hole 110. One end of the vertical microstrip line 230 is a T-shaped vertical end 231, and the other end is a vertical connecting end 232. The vertical microstrip line 230 is arranged on the front surface of the substrate 100. The T-shaped vertical end 231 is parallel to the upper side or the lower side of the radiation unit 210 and is spaced apart from each other. The T-shaped vertical end 231 can transmit radio frequency signals to the radiation unit 210 in a coupled manner. The substrate 100 is provided with a second through hole corresponding to the vertical connecting end 232. The vertical connecting end 232 extends to the back surface of the substrate 100 through the second through hole.
[0028] During use, the power amplifier is connected to the horizontal connecting end 222 and the vertical connecting end 232 from the back surface of the substrate 100, so as to realize a back-fed connection mode. Radio frequency signals are transmitted to the radiation unit 210 in a coupled manner through the horizontal microstrip line 220. Radio frequency signals are transmitted to the radiation unit 210 in a coupled manner through the vertical microstrip line 230. Finally, radio frequency signals are radiated outwardly through the radiation unit 210. The horizontal microstrip line 220 and the vertical microstrip line 230 are integrated on the same substrate 100 in the application. The back-fed connection mode and the coupled transmission mode can well solve the problem that the radiation unit 210 and the transmission line cannot be well arranged when the antenna is large, and prevent resistance from occurring when the cable is connected.
[0029] In some embodiments, the side length of the radiation unit 210 is 10.2 mm.
[0030] In some embodiments, three antenna modules 200 are arranged on the substrate 100 and are arranged along the length direction of the substrate 100. In this way, three antenna modules 200 are integrated on one substrate 100, and the radio frequency efficiency is higher.
[0031] In some embodiments, mounting holes are arranged between adjacent two substrates 100 on the substrate 100. During use, bolts pass through the mounting holes to fix the entire substrate 100.
[0032] In some embodiments, the dielectric constant of the substrate 100 is 2.2.
[0033] In some embodiments, the substrate 100 is selected to be a F4BTMS220 board with a loss factor of 0.0009 at a radio frequency of 10 GHz. The F4BTMS220 board is a polytetrafluoroethylene F4BTMS220 high-frequency circuit board.
[0034] In some embodiments, the substrate 100 has a board thickness of 1.016 mm.
[0035] In some embodiments, the substrate 100 is a quartz glass fiber board.
[0036] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0037] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.
Claims
1. A dual polarized antenna device, characterized by: Comprising a substrate; an antenna module, comprising a radiation unit, a horizontal microstrip line and a vertical microstrip line, the radiation unit is a square structure, the radiation unit is arranged flat on the front surface of the substrate, one end of the horizontal microstrip line is a T-shaped horizontal end, the other end is a horizontal connecting end, the horizontal microstrip line is arranged flat on the front surface of the substrate, the T-shaped horizontal end is parallel to the left side or the right side of the radiation unit and spaced apart from each other, the T-shaped horizontal end can transmit radio frequency signals to the radiation unit by coupling, the substrate is provided with a first through hole corresponding to the horizontal connecting end, the horizontal connecting end extends to the back surface of the substrate through the first through hole, one end of the vertical microstrip line is a T-shaped vertical end, the other end is a vertical connecting end, the vertical microstrip line is arranged flat on the front surface of the substrate, the T-shaped vertical end is parallel to the upper side or the lower side of the radiation unit and spaced apart from each other, the T-shaped vertical end can transmit radio frequency signals to the radiation unit by coupling, the substrate is provided with a second through hole corresponding to the vertical connecting end, the vertical connecting end extends to the back surface of the substrate through the second through hole.
2. The dual polarized antenna device according to claim 1, characterized in that: The side length of the radiation unit is 10.2mm.
3. The dual polarized antenna device of claim 1, wherein: Three antenna modules are arranged on the substrate, and each antenna module is arranged spaced apart along the length direction of the substrate.
4. The dual polarized antenna device of claim 3, wherein: A mounting hole is arranged between adjacent two substrates on the substrate.
5. The dual polarized antenna device of claim 1, wherein: The dielectric constant of the substrate is 2.
2.
6. The dual polarized antenna device of claim 5, wherein: The F4BTMS board with a loss factor of 0.0009 when the frequency of radio frequency signal is 10GHz is selected as the substrate.
7. The dual polarized antenna device according to claim 6, characterized in that: The thickness of the substrate is 1.016mm.
8. The dual polarized antenna device of claim 6, wherein: The substrate is a quartz glass fiber board.