GNSS (Global Navigation Satellite System) coupled antenna

Abstract

The invention relates to the technical field of coupled antennas, and discloses a GNSS coupled antenna comprising an antenna plate which is detachably connected with a reflecting surface. A radio frequency connector is arranged on the reflecting surface; a shielding cover is arranged at the bottom of the reflecting surface; the radio frequency connector and the shielding cover are positioned right above the reflecting surface; radiating units are arranged on the front, back and side surfaces of the antenna plate. According to the GNSS coupled antenna, under the condition that stable performance is ensured, probe excitation is used, signals are connected with the radiation unit in a coupling mode, multi-frequency output is achieved, the requirements for multi-system compatibility and high-precision measurement of existing measurement equipment are met, and meanwhile wireless communication data transmission is met.

Description

Technical Field

[0001] The present invention relates to the field of coupling antennas, and in particular to a GNSS coupling antenna. Background Art

[0002] In the field of RTK (Real-Time Kinematic) measurement system technology, GNSS (Global Navigation Satellite System) antennas are the core components for receiving satellite signals, and their performance directly affects the accuracy and stability of the measurement system. With the continuous development of measurement technology, modern measurement equipment requires GNSS antennas to be compatible with a variety of satellite navigation systems (such as GPS, GLONASS, Galileo, BDS, etc.) to achieve high-precision and high-reliability positioning measurements, and also to meet the needs of wireless communication data transmission, such as WIFI, mobile communications, etc.

[0003] However, traditional GNSS antenna designs often have some problems. For example, they may not be able to meet the requirements of multi-system compatibility and high-precision measurement at the same time, or the size, weight and cost of the antenna will increase significantly when implementing these functions. In addition, traditional antennas may have limitations in signal reception and processing, resulting in poor signal reception quality in certain complex environments (such as urban canyons and areas with severe electromagnetic interference).

[0004] In order to solve the above problems, a GNSS coupling antenna is proposed in the present application. Summary of the invention

[0005] 1. Purpose of the invention In order to solve the technical problems existing in the background technology, the present invention proposes a GNSS coupling antenna. The present invention ensures stable performance while using probe excitation. The signal is connected to the radiation unit through coupling to achieve multi-frequency output, which meets the current requirements of multi-system compatibility and high-precision measurement of measuring equipment, while also meeting the requirements of wireless communication data transmission.

[0006] (II) Technical solution In order to solve the above problems, the present invention provides a GNSS coupling antenna, comprising an antenna plate, wherein the antenna plate is detachably connected to a reflective surface; A radio frequency connector is provided on the reflective surface; A shielding cover is provided at the bottom of the reflecting surface; The radio frequency connector and the shielding cover are located directly above the reflecting surface; The front, back and side surfaces of the antenna plate are all provided with radiation units.

[0007] Preferably, the radiation unit comprises a first radiation unit arranged on the top surface of the antenna board; The first radiation unit is arranged in a circular shape.

[0008] Preferably, it further includes a second radiation unit arranged at the bottom surface of the antenna board; The second radiation unit is arranged in a circular shape; The outer circle of the second radiation unit is provided with a frequency-adjustable branch.

[0009] Preferably, it also includes a third radiation unit and a fourth radiation unit arranged on the side of the antenna board.

[0010] Preferably, a parasitic radiating unit is provided on the outer ring of the first radiating unit, a metal hole is provided on the parasitic radiating unit, a feeding point is provided on the inner ring of the first radiating unit, and the antenna board feeding point is coupled and connected to the radiating unit; the first radiating unit and the second radiating unit are electrically connected through the metal hole.

[0011] Preferably, it also includes an anti-filter component, a combining network, a lightning protection component and an amplifier component.

[0012] Preferably, the antenna plate is detachably connected to the reflective surface by bolts.

[0013] Preferably, frequency-adjustable branches are provided at the inner ring of the first radiation unit.

[0014] Preferably, the number of the parasitic radiation units is several and they are equally divided with the same center.

[0015] Preferably, the interior of the antenna plate is vacuum-set.

[0016] The above technical solution of the present invention has the following beneficial technical effects: The full-band GNSS coverage is achieved by setting the radiation units, especially the radiation units set on the front, back and sides of the antenna board, and the electrical connection between the first radiation unit and the second radiation unit through the metal hole. This design enables the antenna to meet the current requirements of multi-system compatibility of measurement equipment, support multiple satellite navigation systems, and improve the flexibility and accuracy of measurement.

[0017] The antenna board adopts a vacuum design inside to reduce internal interference, and is connected to the radiation unit by probe excitation and signal coupling, which improves the stability and accuracy of the signal. This helps to achieve higher-precision positioning and navigation in RTK measurement systems.

[0018] In addition to meeting the requirements of GNSS signal reception, the antenna is also designed with the third and fourth radiation units, covering the WIFI frequency and mobile communication frequency respectively. This makes the antenna not only suitable for RTK measurement systems, but also meets the needs of wireless communication data transmission, achieving a multi-purpose function.

[0019] Stable performance and reliability: The filter components, combining network, lightning protection components and amplifier components designed on the reflective surface further enhance the performance and reliability of the antenna. The filter components can filter out interference signals and improve signal quality; the combining network can realize the synthesis and transmission of multiple signals; the lightning protection components can protect the antenna from damage by lightning strikes; the amplifier components can enhance signal strength and improve receiving sensitivity.

[0020] Compact structure and easy installation: The GNSS coupling antenna includes an antenna plate, a reflective surface, an RF connector and a shielding cover from top to bottom. The RF connector and the shielding cover are also convenient for connection and integration with other devices, improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a GNSS coupling antenna proposed in the present invention.

[0022] Figure 2 This is a schematic diagram of the side structure of a GNSS coupling antenna proposed in the present invention.

[0023] Figure 3 This is a schematic diagram of a top-down cross-sectional structure of a GNSS coupling antenna proposed in the present invention.

[0024] Figure 4 This is a schematic diagram of the upward-looking structure of a GNSS coupling antenna proposed in the present invention.

[0025] Figure numerals: 1. antenna plate; 2. reflecting surface; 3. RF connector; 4. shielding cover; 5. first radiation unit; 6. second radiation unit; 7. third radiation unit; 8. fourth radiation unit; 9. parasitic radiation unit; 10. feeding point. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0027] like Figure 1-4 As shown, a GNSS coupling antenna proposed in the present invention comprises an antenna plate 1, and the antenna plate 1 is detachably connected with a reflective surface 2; the interior of the antenna plate 1 is vacuum-arranged.

[0028] A radio frequency connector 3 is provided on the reflective surface 2; A shielding cover 4 is provided at the bottom of the reflective surface 2; The RF connector 3 and the shielding cover 4 are located directly above the reflecting surface 2; Radiating units are arranged on the front, back and sides of the antenna board 1 .

[0029] Preferably, the radiation unit includes a first radiation unit 5 arranged on the top surface of the antenna board 1; The first radiation unit 5 is arranged in a circular shape.

[0030] Preferably, it further includes a second radiation unit 6 arranged on the bottom surface of the antenna board 1; The second radiation unit 6 is arranged in a circular shape; The outer circumference of the second radiation unit 6 is provided with a frequency-adjustable branch.

[0031] In an optional embodiment, a third radiation unit 7 and a fourth radiation unit 8 are further included which are arranged on the side of the antenna board 1 .

[0032] The frequency band of the third radiation unit 7 can cover the WIFI frequency, and the frequency band of the fourth radiation unit 8 can cover the mobile communication frequency.

[0033] The feed point of antenna board 1 is excited by a probe, and the signal is connected to the radiating element by coupling. In an optional embodiment, a parasitic radiating unit 9 is provided on the outer ring of the first radiating unit 5, a metal hole is provided on the parasitic radiating unit 9, a feeding point 10 is provided on the inner ring of the first radiating unit 5 (the feeding point of the antenna board 1 is excited by a probe), and the antenna board feeding point 10 is coupled and connected to the radiating unit; the first radiating unit 5 is electrically connected to the second radiating unit 6 through the metal hole.

[0034] In an optional embodiment, it also includes an anti-filter component, a combining network, a lightning protection component and an amplifier component.

[0035] The combining component, lightning protection component and amplifier component are all arranged in the shielding cover; The filter component is arranged at the bottom of the reflecting surface, and the lightning protection component and the amplifier component are arranged at the top of the reflecting surface.

[0036] In an optional embodiment, the antenna plate 1 is detachably connected to the reflective surface 2 by bolts.

[0037] To increase the convenience of disassembly and assembly.

[0038] The reflective surface 2 is provided with a combining network, which is composed of 180° phase lines or synthesized by 3dB bridges.

[0039] In an optional embodiment, a frequency-adjustable branch is provided at the inner ring of the first radiation unit 5 .

[0040] In an optional embodiment, the number of parasitic radiation units 9 is several and they are equally divided with the same center.

[0041] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A GNSS coupling antenna, comprising an antenna plate (1), characterized in that: The antenna plate (1) is detachably connected to a reflective surface (2); A radio frequency connector (3) is provided on the reflection surface (2); A shielding cover (4) is provided at the bottom of the reflecting surface (2); The radio frequency connector (3) and the shielding cover (4) are located directly above the reflecting surface (2); Radiating units are arranged on the front, back and sides of the antenna plate (1).

2. A GNSS coupling antenna according to claim 1, characterized in that: The radiation unit comprises a first radiation unit (5) arranged on the top surface of the antenna board (1); The first radiation unit (5) is arranged in a circular ring.

3. A GNSS coupling antenna according to claim 2, characterized in that: It also includes a second radiation unit (6) arranged on the bottom surface of the antenna board (1); The second radiation unit (6) is arranged in a circular shape; The outer circumference of the second radiation unit (6) is provided with a frequency-adjustable branch.

4. A GNSS coupling antenna according to claim 3, characterized in that: It also includes a third radiation unit (7) and a fourth radiation unit (8) arranged on the side of the antenna board (1).

5. A GNSS coupling antenna according to claim 4, characterized in that: The first radiation unit (5) is provided with a parasitic radiation unit (9) on its outer ring, the parasitic radiation unit (9) being provided with a metal hole, the first radiation unit (5) is provided with a feeding point (10) on its inner ring, the antenna board feeding point (10) being coupled and connected to the radiation unit; the first radiation unit (5) is electrically connected to the second radiation unit (6) via the metal hole.

6. A GNSS coupling antenna according to claim 5, characterized in that: It also includes anti-filter components, combining networks, lightning protection components and amplifier components.

7. A GNSS coupling antenna according to claim 6, characterized in that: The antenna plate (1) is detachably connected to the reflective surface (2) via bolts.

8. The GNSS coupling antenna according to claim 2, characterized in that: The first radiation unit (5) is provided with frequency-adjustable branches at the inner ring.

9. The GNSS coupling antenna according to claim 7, characterized in that: The number of the parasitic radiation units (9) is a plurality and they are equally divided with the same center.

10. A GNSS coupling antenna according to claim 9, characterized in that: The interior of the antenna plate (1) is vacuum-set.

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