Circularly polarized antenna arraying device

Abstract

A circularly polarized antenna arraying device comprises a reflecting plate, a feed line, a circularly polarized antenna unit and a video signal access end. The circularly polarized antenna unit, the feed line and the video signal access end are arranged on the upper surface of the reflecting plate; the feed circuit comprises a first circuit, two second circuits and four third circuits, the video signal access end is electrically connected with the inlet end of the first circuit, the outlet end of the first circuit is electrically connected with the inlet ends of the two second circuits, the outlet ends of the second circuits are electrically connected with the inlet ends of the two third circuits, and the outlet ends of the third circuits are electrically connected with the inlet ends of the video signal access end. The outlet end of the third line is provided with the output end of the feed network, and the output end of the feed network is electrically connected with the circularly polarized antenna unit. By adjusting the phase difference on the circularly polarized antenna units, a radiation mode with directivity can be formed. And the radiation gain in a specific direction is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a circular polarization antenna array device. Background Art

[0002] Camera data transmission is generally divided into two modes: wired transmission and wireless transmission. Wired transmission: Using wired transmission can provide more stable and reliable data transmission. Common wired transmission methods include USB, HDMI, SDI, etc. Among them, USB is the most commonly used camera data transmission interface, which supports high-speed data transmission and easy plug-in and unplug, and is suitable for short-distance transmission. HDMI and SDI are suitable for long-distance high-definition video transmission, but require special connectors and cables. Wireless transmission: Using wireless transmission can reduce wiring and improve flexibility and portability. Common wireless transmission methods include Wi-Fi, Bluetooth, Zigbee, etc. Among them, Wi-Fi is the most commonly used wireless transmission method, which can achieve high-speed data transmission and long-distance coverage, and can be remotely controlled by mobile phones or computers. Bluetooth and Zigbee have short transmission distances, but low energy consumption and low cost, and are suitable for low-power applications.

[0003] In wireless transmission, the data is usually connected to a reflector through a data line, and then the data is sent out through the antenna unit on the reflector. However, in the existing technology, there is usually only one antenna unit, which has a high degree of integration and cannot effectively adapt to the transmission of signals with different bandwidths. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the present invention is to provide a circularly polarized antenna array device, which provides a plurality of antenna units to jointly improve the reception and transmission effects of signals.

[0005] To achieve this purpose, the utility model adopts the following technical solutions: a circular polarization antenna array device, including a reflector, a feeder circuit, a circular polarization antenna unit and a video signal access terminal;

[0006] The circular polarization antenna unit, the feeding circuit and the video signal access terminal are arranged on the upper surface of the reflection plate;

[0007] The feeder circuit includes a first circuit, two second circuits and four third circuits, the video signal access end is electrically connected to the inlet end of the first circuit, the outlet end of the first circuit is electrically connected to the inlet ends of the two second circuits respectively, the outlet end of the second circuit is electrically connected to the inlet ends of the two third circuits respectively, the outlet end of the third circuit is provided with an output end of a feeder network, and the output end of the feeder network is electrically connected to the circularly polarized antenna unit;

[0008] Preferably, the outlet end of the third line is provided with two output lines, and both output lines are provided with output ends of the feed network. There is a 90 degree phase difference between the two output lines of the same third line.

[0009] Preferably, the circularly polarized antenna unit comprises a support column and a dipole radiator plate, and two sections of the support column are respectively against the reflector plate and the dipole radiator plate;

[0010] The vibrator radiator plate, the support column and the reflector plate are all provided with openings, and the fixing member passes through the openings of the reflector plate, the support column and the vibrator radiator plate in sequence to fix the vibrator radiator plate to the support column;

[0011] The vibrator radiator plate is arranged in parallel with the reflector plate;

[0012] The oscillator radiator plate is also provided with an interface, and the interface is electrically connected to the output end of the feeding network.

[0013] Preferably, the four circularly polarized antenna units are distributed in a rectangular shape.

[0014] Preferably, it further comprises feeding nodes, which are respectively arranged on the first line and the third line to supply power to the feeding lines.

[0015] Preferably, it further comprises a mounting plate, wherein the mounting plate is fixed to the lower surface of the reflecting plate, the area of ​​the mounting plate is larger than the area of ​​the reflecting plate, and the mounting plate is provided with mounting holes in non-intersecting areas of the reflecting plate.

[0016] Preferably, the height H of the support column is 2 mm.

[0017] One of the above technical solutions has the following advantages or beneficial effects: a total of four circularly polarized antenna units are provided, and a directional radiation pattern can be formed by adjusting the phase difference on the circularly polarized antenna units. The radiation gain in a specific direction will be enhanced, while it will be reduced in other directions. This is very important for beamforming and directional transmission in wireless communication systems, and can improve the reception and transmission effects of signals. It can effectively adapt to the transmission of signals with different bandwidths. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0019] Figure 2 It is a side view of an embodiment of the utility model.

[0020] Figure 3 It is a schematic structural diagram of a vibrator radiator plate in an embodiment of the utility model.

[0021] Figure 4 It is a structural schematic diagram of a reflector in one embodiment of the utility model.

[0022] Among them: reflecting plate 1, feeding line 2, first line 2a, second line 2b, third line 2c, output line 2d, circularly polarized antenna unit 3, supporting column 3a, dipole radiator plate 3b, interface 3ba, video signal access terminal 4, output terminal 5 of feeding network, mounting plate 6, mounting hole 6a, feeding node 7, opening 8. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 4As shown, a circular polarization antenna array device comprises a reflection plate (1), a feeder line (2), a circular polarization antenna unit (3) and a video signal access terminal (4);

[0028] The circularly polarized antenna unit (3), the feeder circuit (2) and the video signal access terminal (4) are arranged on the upper surface of the reflection plate (1);

[0029] The feeder circuit (2) comprises a first circuit (2a), two second circuits (2b) and four third circuits (2c); the video signal access terminal (4) is electrically connected to the input terminal of the first circuit (2a); the output terminal of the first circuit (2a) is electrically connected to the input terminals of the two second circuits (2b); the output terminals of the second circuits (2b) are electrically connected to the input terminals of the two third circuits (2c); the output terminals of the third circuits (2c) are provided with the output terminals (5) of the feeder network; and the output terminals (5) of the feeder network are electrically connected to the circularly polarized antenna unit (3);

[0030] Preferably, the outlet end of the third line (2c) is provided with two output lines (2d), and both output lines (2d) are provided with an output end (5) of a feeding network, wherein there is a 90-degree phase difference between the two output lines (2d) of the same third line (2c).

[0031] In the utility model, a total of four circularly polarized antenna units (3) with the same phase are provided, and circular polarization is achieved by adjusting the phase difference of the circularly polarized antenna units (3) input. A directional radiation pattern can be formed. The radiation gain in a specific direction is enhanced, while it is reduced in other directions. This is very important for beamforming and directional transmission in wireless communication systems, and can improve the reception and transmission effects of signals. It can effectively adapt to the transmission of signals with different bandwidths.

[0032] In the utility model, each circularly polarized antenna unit (3) is connected to the output ends (5) of two feeding networks. In this case, the use of two feeding networks can provide a wider frequency bandwidth, so that the antenna can work effectively in a wider frequency range. Each feeding network can be optimized for a specific frequency band, thereby increasing the bandwidth of the antenna.

[0033] At the same time, the two feeding networks can achieve better impedance matching, thereby reducing the reflection loss of the antenna. This can improve the efficiency of the antenna, convert more input power into power radiated by the antenna, and reduce energy loss.

[0034] Preferably, the circularly polarized antenna unit (3) comprises a support column (3a) and a dipole radiator plate (3b), and two sections of the support column (3a) are respectively against the reflection plate (1) and the dipole radiator plate (3b);

[0035] The oscillator radiator plate (3b), the support column (3a) and the reflector plate (1) are all provided with openings (8); the fixing member successively passes through the reflector plate (1), the support column (3a) and the openings (8) of the oscillator radiator plate (3b) to fix the oscillator radiator plate (3b) to the support column (3a);

[0036] The oscillator radiator plate (3b) is arranged in parallel with the reflection plate (1);

[0037] The oscillator radiator plate (3b) is also provided with an interface (3ba), and the interface (3ba) is electrically connected to the output end (5) of the feeding network.

[0038] The fixing member may be a combination of a screw and a nut, wherein the screw passes through the reflecting plate (1), the supporting column (3a) and the opening (8) of the vibrator radiator plate (3b) from top to bottom in sequence, and then the upper end of the screw is locked with a nut, so that the three are fixedly connected. This method can quickly install four circularly polarized antenna units (3), thereby speeding up the installation efficiency. At the same time, by arranging the vibrator radiator plate (3b) in parallel with the reflecting plate (1), a structure with stronger radiation directivity can be formed. The reflecting plate (1) can reflect and focus the signal radiated by the vibrator in a specific direction, thereby enhancing the signal strength in the target direction. This helps to improve the coverage and transmission effect of the video signal.

[0039] Preferably, the four circularly polarized antenna units (3) are distributed in a rectangular shape.

[0040] Since the circularly polarized antenna units (3) are distributed in a rectangular shape, they can cover a larger area. Compared with a single antenna unit, a combination of multiple antenna units can provide a wider signal coverage, so that the signal can be transmitted to a farther place.

[0041] Preferably, a feeding node (7) is further included, wherein the feeding node (7) is respectively arranged on the first line (2a) and the third line (2c) to supply power to the feeding line (2).

[0042] Preferably, it further comprises a mounting plate (6), wherein the mounting plate (6) is fixed to the lower surface of the reflecting plate (1), the area of ​​the mounting plate (6) is larger than the area of ​​the reflecting plate (1), and the mounting plate (6) is provided with mounting holes (6a) in non-intersecting areas of the reflecting plate (1).

[0043] Usually, a circular polarization antenna array device needs to be fixedly mounted on a frame. To facilitate installation, in the utility model, the reflector (1) is welded to the mounting surface or fixed by means of screws, and a corresponding opening (8) is provided for a fixing member to pass through the fixed oscillator radiator plate (3b). A mounting hole (6a) is provided on the fixing plate, and the circular polarization antenna array device is fixed on the frame through the combination of the mounting hole (6a) and the bolt structure.

[0044] Preferably, the height H of the support column (3a) is 2 mm. When the height H of the support column (3a) is 2 mm, it can maintain a good axial ratio performance and also bring about better standing wave performance.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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 one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circular polarization antenna array device, characterized in that: It comprises a reflection plate (1), a feeder line (2), a circular polarization antenna unit (3) and a video signal access terminal (4); The circularly polarized antenna unit (3), the feeder circuit (2) and the video signal access terminal (4) are arranged on the upper surface of the reflection plate (1); The feeder circuit (2) comprises a first circuit (2a), two second circuits (2b) and four third circuits (2c); the video signal access terminal (4) is electrically connected to the input terminal of the first circuit (2a); the output terminal of the first circuit (2a) is electrically connected to the input terminals of the two second circuits (2b) respectively; the output terminal of the second circuit (2b) is electrically connected to the input terminals of the two third circuits (2c) respectively; the output terminal of the third circuit (2c) is provided with an output terminal (5) of a feeder network; and the output terminal (5) of the feeder network is electrically connected to the circularly polarized antenna unit (3); The outlet end of the third line (2c) is provided with two output lines (2d), and both output lines (2d) are provided with an output end (5) of a feeding network, wherein there is a 90-degree phase difference between the two output lines (2d) of the same third line (2c).

2. The circular polarization antenna array device according to claim 1, characterized in that: The circularly polarized antenna unit (3) comprises a support column (3a) and a dipole radiator plate (3b), wherein two sections of the support column (3a) are respectively against the reflection plate (1) and the dipole radiator plate (3b); The oscillator radiator plate (3b), the support column (3a) and the reflector plate (1) are all provided with openings (8); the fixing member passes through the reflector plate (1), the support column (3a) and the openings (8) of the oscillator radiator plate (3b) in sequence to fix the oscillator radiator plate (3b) to the support column (3a); The oscillator radiator plate (3b) is arranged in parallel with the reflecting plate (1); The oscillator radiator plate (3b) is also provided with an interface (3ba), and the interface (3ba) is electrically connected to the output end (5) of the feeding network.

3. The circular polarization antenna array device according to claim 2, characterized in that: The four circularly polarized antenna units (3) are distributed in a rectangular shape.

4. The circular polarization antenna array device according to claim 1, characterized in that: It also includes a feeding node (7), which is respectively arranged on the first line (2a) and the third line (2c) to supply power to the feeding line (2).

5. The circular polarization antenna array device according to claim 1, characterized in that: It also comprises a mounting plate (6), wherein the mounting plate (6) is fixed to the lower surface of the reflecting plate (1), the area of ​​the mounting plate (6) is larger than the area of ​​the reflecting plate (1), and the mounting plate (6) is provided with mounting holes (6a) in non-intersecting areas of the reflecting plate (1).

6. The circular polarization antenna array device according to claim 3, characterized in that: The height H of the support column (3a) is 2 mm.

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