A general-purpose dual-band UAV data link antenna

Abstract

This invention provides a universal dual-band UAV data link antenna, including an RF connector and a reflector plate oscillator assembly. The RF connector is connected to the reflector plate oscillator assembly. The reflector plate oscillator assembly is a one-piece molded structure, comprising a reflector plate, a monopole antenna element, and an inverted-F antenna element. The RF connector is connected to the antenna interface of the RF front end via a feed line. The monopole antenna element operates in the L-band, and the inverted-F antenna element operates in the S-band. The dual-band UAV data link antenna has adjustable settings for the feed position, the monopole antenna element, and the inverted-F antenna element. The dual-band UAV data link antenna also has expansion settings. The advantages of this invention are: small size, light weight, minimal impact on aerodynamic appearance, effectively reducing installation impact; flexible, easy to use, and expandable, giving it strong versatility.

Description

Technical Field

[0001] This utility model belongs to the field of measurement and control communication antenna technology, and in particular relates to a general dual-band UAV data link antenna. Background Technology

[0002] Antennas are an important component of UAV data links, playing a crucial role in enabling spatial radiation and air interface reception of wireless signals, and directly affecting the performance of UAV data links.

[0003] Currently, due to the increase in the number of drones, the frequency bands used by their data links cover multiple bands such as UHF, L, S, and C. For large and medium-sized drones, dual-link redundancy backup is usually required to avoid single point of failure. In addition, drones are usually equipped with satellite navigation, ADS-B and other equipment, which all require the use of specific frequency points and types of antennas, resulting in a wide variety of antenna types. Furthermore, due to the requirements for antenna obstruction and interference isolation, as well as aircraft aerodynamic considerations, the installation is difficult.

[0004] On the other hand, due to the complex working conditions of UAVs, there are high requirements for the reliability and environmental adaptability of antennas. At the same time, UAV data link communication distance is long and the data link equipment has high transmission power, requiring antennas to have high power tolerance. Summary of the Invention

[0005] In view of this, the present invention aims to propose a universal dual-band UAV data link antenna to solve the problems of low power tolerance, poor reliability and environmental adaptability, and diverse forms and types of existing UAV data link antennas.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A universal dual-band UAV data link antenna includes an RF connector and a reflector disk oscillator assembly, wherein the RF connector is connected to the reflector disk oscillator assembly;

[0008] The reflector disk vibrator assembly is a one-piece molded structure, and the reflector disk vibrator assembly includes a reflector disk, a monopole antenna vibrator, and an inverted F antenna vibrator;

[0009] The RF connector is of SMA type and is connected to the antenna interface of the RF front end via a feeder.

[0010] The monopole antenna vibrator operates in the S-band, and the inverted-F antenna vibrator operates in the L-band.

[0011] The dual-band UAV data link antenna is vertically polarized;

[0012] The feed position of the dual-band UAV data link antenna, the monopole antenna element, and the inverted F antenna element are all equipped with adjustment settings;

[0013] The dual-band UAV data link antenna has an extension setting.

[0014] Furthermore, the reflector oscillator assembly is made of aluminum alloy or copper.

[0015] Furthermore, the dielectric layer of the radio frequency connector is made of polytetrafluoroethylene.

[0016] Furthermore, the operating bandwidth of the L-band is 100MHz.

[0017] Furthermore, the operating bandwidth of the S-band is 200MHz.

[0018] Furthermore, the operating frequency band of the monopole antenna vibrator in the L-band is set to 1.35GHz-1.45GHz.

[0019] Furthermore, the inverted-F antenna vibrator operates at a frequency of 2.2GHz-2.4GHz in the S-band.

[0020] Furthermore, the in-band VSWR of the operating frequency band is less than 2.

[0021] Furthermore, the overall outer envelope of the antenna is no greater than 50mm×50mm×37mm.

[0022] Compared with existing technologies, the universal dual-band UAV data link antenna described in this utility model has the following advantages:

[0023] (1) This utility model provides a universal dual-band UAV data link antenna, which has extremely high versatility and can be easily and quickly adapted to different frequency bands and extended to multiple frequency bands;

[0024] (2) The present invention provides a general dual-band UAV data link antenna with an extremely simple architecture and high reliability;

[0025] (3) The present invention provides a general dual-band UAV data link antenna, which can be integrally machined from copper or aluminum alloy, ensuring high reliability and wide environmental adaptability while having high power tolerance;

[0026] (4) This utility model provides a general dual-band UAV data link antenna, which is small in size, light in weight, and has low installation requirements. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure as described in an embodiment of the present utility model;

[0029] Figure 2 This is a front view schematic diagram of the overall structure described in an embodiment of the present utility model;

[0030] Figure 3 This is a side view of the overall structure according to an embodiment of the present utility model;

[0031] Figure 4 This is a top view of the overall structure described in an embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the dual-band standing wave according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the 1.4G band antenna in the vertical and horizontal directions according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the vertical and horizontal direction of the 2.4G band antenna described in this embodiment of the utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. RF connector; 2. Reflector disk vibrator assembly; 21. Reflector disk; 22. Monopole antenna vibrator; 23. Inverted F antenna vibrator. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] like Figures 1 to 7 As shown, a general-purpose dual-band UAV data link antenna includes an RF connector and a reflector disk oscillator assembly. The RF connector is connected to the reflector disk oscillator assembly. The reflector disk oscillator assembly includes a reflector disk, a monopole antenna oscillator, and an inverted-F antenna oscillator. The RF connector is a snap-fit ​​SMA type, which eliminates the need for soldering and simplifies assembly. The RF connector is connected to the antenna interface of the RF front end via a feed line.

[0042] In a preferred embodiment of this utility model, the reflector disk vibrator assembly is an integrally formed structure; the monopole antenna vibrator operates in the S-band, and the inverted-F antenna vibrator operates in the L-band; the dual-band UAV data link antenna is vertically polarized; the feed position, monopole antenna vibrator, and inverted-F antenna vibrator of the dual-band UAV data link antenna are all equipped with adjustment settings; the dual-band UAV data link antenna has an extension setting; the reflector disk vibrator assembly is made of aluminum alloy or copper; the dielectric layer of the RF connector is made of polytetrafluoroethylene; the operating bandwidth of the L-band is 100MHz; the operating bandwidth of the S-band is 200MHz; the operating frequency of the monopole antenna vibrator in the L-band is set to 1.35GHz-1.45GHz; the operating frequency of the inverted-F antenna vibrator in the S-band is set to 2.2GHz-2.4GHz; the overall outer envelope of the dual-band UAV data link antenna is no greater than 50mm×50mm×37mm. In this embodiment, the reflector oscillator assembly is manufactured using integrated machining and wire cutting processes, resulting in high structural strength, strong power tolerance, and good reliability. The surface undergoes a yellow conductive oxidation treatment to enhance corrosion resistance. The overall outer envelope of the antenna is no greater than 50mm × 50mm × 37mm, resulting in a low envelope and minimal aerodynamic impact on the oscillator, which is beneficial for installation. The support arm and SMA solder joints of the inverted-F antenna oscillator together provide mechanical support for the oscillator. The PTFE of the RF connector serves as the dielectric layer between the oscillator and the reflector oscillator. The dielectric spacing is adjusted by coordinating the thickness of the reflector oscillator with the selection of the RF connector. The antenna adapts to different frequency bands by adjusting the feed position and vibrator length; it achieves dual-band fusion and can be extended to multiple frequency bands as needed through simple extrapolation; the antenna has a working bandwidth of 200MHz in the S-band and 100MHz in the L-band, providing a large working bandwidth and good versatility; the in-band VSWR is less than 2 in the working frequency band, and the VSWR rises steeply in the non-working frequency band, providing good interference isolation; the monopole antenna's working frequency band covers the L-band designated for UAV telemetry and control by the Ministry of Industry and Information Technology, providing good versatility; the inverted-F antenna's working frequency band covers the general telemetry frequency band, providing good versatility.

[0043] Example 1:

[0044] like Figure 6 As shown, the antenna has a wide beam angle, a gain greater than 0dB, and a non-circularity of about 1dB, exhibiting good antenna performance.

[0045] like Figure 7 As shown, the antenna has a wide beam angle, a gain greater than 0dB, and a non-circularity of about 1dB, exhibiting good antenna performance.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A universal dual-band UAV data link antenna, characterized in that: It includes an RF connector (1) and a reflector plate oscillator assembly (2), wherein the RF connector (1) is connected to the reflector plate oscillator assembly (2); The reflector plate oscillator assembly (2) is an integrally formed structure, and the reflector plate oscillator assembly (2) includes a reflector plate (21), a monopole antenna oscillator (22) and an inverted F antenna oscillator (23); The RF connector (1) is of SMA type, and the RF connector (1) is connected to the antenna interface of the RF front end through a feeder. The monopole antenna vibrator (22) operates in the S-band, and the inverted F antenna vibrator (23) operates in the L-band. The dual-band UAV data link antenna is vertically polarized; The feed position of the dual-band UAV data link antenna, the monopole antenna element (22), and the inverted F antenna element (23) are all equipped with adjustment settings; The dual-band UAV data link antenna has an extension setting.

2. The universal dual-band UAV data link antenna according to claim 1, characterized in that: The material of the reflector oscillator assembly (2) is aluminum alloy or copper metal.

3. A universal dual-band UAV data link antenna according to claim 1, characterized in that: The dielectric layer of the radio frequency connector (1) is made of polytetrafluoroethylene.

4. A universal dual-band UAV data link antenna according to claim 1, characterized in that: The operating bandwidth of the L-band is 100MHz.

5. A universal dual-band UAV data link antenna according to claim 1, characterized in that: The operating bandwidth of the S-band is 200MHz.

6. A universal dual-band UAV data link antenna according to claim 1, characterized in that: The monopole antenna vibrator (22) operates at a frequency of 1.35 GHz to 1.45 GHz in the L band.

7. A universal dual-band UAV data link antenna according to claim 1, characterized in that: The inverted F antenna vibrator (23) is set to operate at a frequency of 2.2 GHz to 2.4 GHz in the S-band.

8. A universal dual-band UAV data link antenna according to claim 6 or 7, characterized in that: The in-band VSWR of the operating frequency band is less than 2.

9. A universal dual-band UAV data link antenna according to claim 1, characterized in that: The overall outer envelope is no larger than 50mm×50mm×37mm.

Images