Integrated high-performance multi-service vehicle-mounted antenna

Abstract

The utility model discloses an integrated high-performance multi-service vehicle-mounted antenna, which comprises a mounting base, an outer cover is arranged on the mounting base, and a GNSS (Global Navigation Satellite System) positioning module, an ultra wide band antenna and a WiFi (Wireless Fidelity) antenna are arranged in the outer cover; the front side and the rear side of the GNSS positioning module are provided with ultra-wideband antennas, the left side and the right side of the GNSS positioning module are provided with WiFi antennas, the ultra-wideband antennas and the WiFi antennas adopt monopole antennas and are perpendicular to the ground, and the monopole antennas are printed on a PCB. Multiple types of multi-band antennas are fused, multiple types of service antennas are integrated in one antenna, the WiFi antenna and the ultra wide band antenna realize antenna omnidirectional high gain, coverage is realized without dead angles, and normal use of each vehicle-mounted service device is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of mobile communication vehicle-mounted antennas and relates to an integrated high-performance multi-service vehicle-mounted antenna. Background Art

[0002] At present, my country's communication business is developing rapidly. The 4G network has been fully covered, and the 5G basic network coverage has been basically completed. With the rapid development of various application industries, the application demand for intelligent driving, intelligent control, and intelligent information management is also increasing sharply. The transmission demand for information control, information command, information monitoring, etc. is also increasing. Based on the existing mobile communication business needs, the antenna functions and quantity required by vehicle-mounted antennas are also increasing.

[0003] In order to meet application requirements and solve the problem of increasing demand for the number of antennas. Patent application number 202310425717.X describes a vehicle-mounted antenna. In terms of performance, the antenna adopts a low-profile bending form, which greatly reduces the radiation performance of the antenna. The gain is more than 1dB lower than that of the monopole antenna, and the antenna is installed in the car. Affected by the in-car environment, the antenna's transceiver performance will be greatly affected. The backward and lateral signals cannot be received and transmitted normally, and only the forward and upward signals can be received and transmitted normally. In addition, in terms of structure, the antenna has no waterproof sealing design. In the case of high humidity and alternating hot and cold conditions, water droplets may form inside the antenna, causing the antenna to short-circuit and fail.

[0004] The vehicle-mounted antenna described in patent application number 202210160250.6 has a small number of antennas and few functions in terms of performance, which cannot meet the functional requirements of multiple services and big data transmission. In terms of structure, the antenna is relatively tall and large in size, and has a large wind resistance.

[0005] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0006] The utility model aims to provide an integrated high-performance multi-service vehicle-mounted antenna, and improve the communication performance of the vehicle-mounted antenna through structural improvement.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] An integrated high-performance multi-service vehicle-mounted antenna comprises a mounting base, wherein the mounting base is provided with an outer cover, wherein a GNSS positioning module, an ultra-wideband antenna and a WiFi antenna are provided in the outer cover; ultra-wideband antennas are provided on the front and rear sides of the GNSS positioning module, and WiFi antennas are provided on the left and right sides of the GNSS positioning module; the ultra-wideband antenna and the WiFi antenna adopt monopole antennas and are designed to be perpendicular to the ground, and the monopole antenna is printed on a PCB board.

[0009] Furthermore, the GNSS positioning module adopts a high dielectric constant ceramic antenna with a single-feed right-hand circular polarization design.

[0010] Furthermore, the ultra-wideband antenna adopts a conical monopole antenna, a slot is provided on the ultra-wideband antenna, a short-circuit line is provided on the ultra-wideband antenna below the slot, the slot of the ultra-wideband antenna increases the low-frequency inductive reactance, and a loading is provided on the top of the ultra-wideband antenna, and the loading increases the antenna capacitive reactance in the high frequency band; the standing wave of the ultra-wideband antenna is less than 2 in the entire passband, and the grounding of the ultra-wideband antenna adopts a defective ground structure.

[0011] Furthermore, the groove is in a C-shape or a Y-shape.

[0012] Furthermore, the WiFi antenna adopts a dual-band monopole antenna, and the WiFi antenna is cut through slots to form a 2.4G and 5.8G dual-band WiFi antenna.

[0013] Furthermore, a sealing groove is provided on the mounting base, and the antenna and the outer cover are sealed by the sealing groove design.

[0014] The present invention provides an integrated high-performance multi-service vehicle-mounted antenna. The communication antennas all adopt monopole antennas perpendicular to the ground. Compared with the traditional monopole, the gain of the antenna is not significantly reduced. The antenna radiates omnidirectionally, and there is no dead angle for communication. The standing wave of all frequency bands of the antenna is less than 2, and the gain is greater than 3dBi, with excellent performance. In addition, the antenna adopts a miniaturized design as a whole, with a compact and stable structure. The positioning antenna is located in the middle of the antenna without interference, ensuring the positioning function. The overall structure of the antenna is simple and easy to install and debug.

[0015] The above technical solution has the following beneficial effects: multiple types and multiple frequency band antennas are integrated into one antenna, and WiFi antennas and ultra-wideband antennas achieve omnidirectional high gain, achieving coverage without dead spots, and ensuring the normal use of various vehicle-mounted business equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 This is a schematic diagram of the first state structure provided by the utility model.

[0019] Figure 2 This is a schematic diagram of the first state structure provided by the utility model (without the outer cover).

[0020] Figure 3 This is a schematic diagram of the structure of the utility model in a top view (without the outer cover).

[0021] Figure 4 This is a schematic diagram of the second state structure provided by the utility model (without the outer cover).

[0022] In the figure: 10 - outer cover; 20 - mounting base; 301, 302 - ultra-wideband antenna; 3011 - slot; 3012 - short-circuit line; 3013 - loading; 3014 - defective ground structure; 40 - GNSS positioning module; 501, 502 - WiFi antenna. DETAILED DESCRIPTION

[0023] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0024] See also Figure 1-Figure 4 As shown, an integrated high-performance multi-service vehicle-mounted antenna includes an outer cover 10, a mounting base 20, a GNSS positioning module 40, two ultra-wideband antennas 301, 302, and two WiFi antennas 501, 502. The outer cover 10 is a cylindrical high wind-resistant outer cover, which is installed on the mounting base 20. The GNSS positioning module 40, the ultra-wideband antennas 301, 302, and the WiFi antennas 501, 502 are distributed in the outer cover 10. Among them: the ultra-wideband antennas 301, 302 are arranged on the front and rear sides of the GNSS positioning module 40, and the WiFi antennas 501, 502 are arranged on the left and right sides of the GNSS positioning module 40.

[0025] Specifically, the GNSS positioning module 40 is a miniaturized and high-precision GNSS positioning module that uses a high dielectric constant ceramic antenna and a single-fed right-hand circular polarization design. It maintains performance while minimizing the size of the antenna. It is installed with screws on the mounting base 20, which is stable and reliable.

[0026] In this embodiment, the ultra-wideband antennas 301, 302 and the WiFi antennas 501, 502 are monopole antennas, which are printed on a PCB board and have a simple structure and are easy to produce.

[0027] Specifically, the ultra-wideband antennas 301 and 302 use conical monopole antennas, and the antennas have slots 3011, top loading 3013 and short-circuit lines 3012. Short-circuit lines 3012 are provided on the ultra-wideband antenna below the slots 3011. The slots of the ultra-wideband antenna increase the low-frequency inductive reactance of the antenna, and the top of the ultra-wideband antenna is provided with loading 3013, which increases the capacitive reactance of the antenna in the high frequency band, so that the antenna achieves good impedance matching in the passband, and the standing wave of the antenna in the entire passband is less than 2. The antenna grounding adopts a defective ground structure 3014, which can reduce the coupling between antennas.

[0028] The ultra-wideband antennas 301 and 302 use conical monopole antennas, which are composed of five parts: a cone, a slot on the cone surface, a ground with a defective ground structure, a top loading, and a back short-circuit. Based on this structure, antennas of different frequency bands can be designed, and the design of antennas of different frequency bands can be achieved by changing the size of the cone, the slot on the cone surface, the top loading, and the back short-circuit. The slots can have a variety of forms, such as C-type and Y-type, which are all deformations of the existing slotting methods.

[0029] In this embodiment, the ultra-wideband antennas 301 and 302 can achieve 360-degree omnidirectional coverage, with a standing wave less than 2 and a gain greater than 3dBi. The ultra-wideband antennas 301 and 302 adopt a defective ground structure to achieve decoupling and reduce coupling with surrounding antennas.

[0030] WiFi antennas 501 and 502 use dual-band monopole antennas. Different slots are opened on the monopole antennas to cut current, so that the antennas can resonate in different required frequency bands and achieve 2.4G and 5.8G dual-band WiFi operation.

[0031] In this embodiment, the WiFi antennas 501 and 502 adopt a monopole solution. The WiFi antennas 501 and 502 can achieve 360-degree omnidirectional coverage, and the standing wave is less than 2 and the gain is greater than 3dBi.

[0032] WiFi antennas 501 and 502 are divided into a radiation part and a feeding part. The radiation part adopts a monopole antenna slot method to achieve dual-frequency radiation, and the feeding part adopts an impedance transformation line, and the antenna matching is adjustable.

[0033] The mounting base 20 is a fixing plate for mounting the ultra-wideband antennas 301, 302, the WiFi antennas 501, 502 and the outer cover 10. The mounting base 20 is provided with a sealing groove design. The outer cover 10 is installed in the sealing groove to achieve sealing of the ultra-wideband antennas 301, 302, the WiFi antennas 501, 502 and the outer cover 10.

[0034] The GNSS positioning module 40 is located in the middle of the ultra-wideband antennas 301 and 302 and the WiFi antennas 501 and 502. There is no metal shielding when receiving satellite signals, and the positioning reliability is high.

[0035] The vehicle-mounted antenna of this embodiment adopts a low-profile cylindrical design, which has low wind resistance and can meet the reliability requirements of a wind speed of 300 kilometers per hour. The array form is simple and beautiful, the solution is simple and compact, and the appearance design is beautiful.

[0036] In this embodiment, a WiFi antenna and an ultra-wideband antenna can be replaced with 5G, 6G, multi-frequency antennas and other antenna units to realize the functions of other new services. The GNSS antenna can be replaced with GPS, BDS and other antennas to realize the positioning function.

[0037] The present invention provides an integrated high-performance multi-service vehicle-mounted antenna. The communication antennas all adopt monopole antennas perpendicular to the ground. Compared with the traditional monopole, the gain of the antenna is not significantly reduced. The antenna radiates omnidirectionally, and there is no dead angle for communication. The standing wave of all frequency bands of the antenna is less than 2, and the gain is greater than 3dBi, with excellent performance. In addition, the antenna adopts a miniaturized design as a whole, with a compact and stable structure. The positioning antenna is located in the middle of the antenna without interference, ensuring the positioning function. The overall structure of the antenna is simple and easy to install and debug.

[0038] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. Integrated high-performance multi-service vehicle-mounted antenna, characterized by: It comprises a mounting base, the mounting base is provided with an outer cover, the outer cover is provided with a GNSS positioning module, an ultra-wideband antenna and a WiFi antenna; the front and rear sides of the GNSS positioning module are provided with ultra-wideband antennas, the left and right sides of the GNSS positioning module are provided with WiFi antennas, the ultra-wideband antenna and the WiFi antenna are monopole antennas and are perpendicular to the ground, and the monopole antenna is printed on a PCB board.

2. The integrated high-performance multi-service vehicle-mounted antenna according to claim 1, characterized in that: The GNSS positioning module adopts a high dielectric constant ceramic antenna with a single-feed right-hand circular polarization design.

3. The integrated high-performance multi-service vehicle-mounted antenna according to claim 1, characterized in that: The ultra-wideband antenna adopts a conical monopole antenna, a slot is provided on the ultra-wideband antenna, a short-circuit line is provided on the ultra-wideband antenna below the slot, the slot of the ultra-wideband antenna increases the low-frequency inductive reactance, a loading is provided on the top of the ultra-wideband antenna, and the loading increases the antenna capacitive reactance in the high frequency band; the standing wave of the ultra-wideband antenna is less than 2 in the entire passband, and the grounding of the ultra-wideband antenna adopts a defective ground structure.

4. The integrated high-performance multi-service vehicle-mounted antenna according to claim 3, characterized in that: The groove is in a C-shape or a Y-shape.

5. The integrated high-performance multi-service vehicle-mounted antenna according to claim 1, characterized in that: The WiFi antenna adopts a dual-frequency monopole antenna, and a 2.4G and 5.8G dual-frequency WiFi antenna is formed by cutting current through slots on the WiFi antenna.

6. The integrated high-performance multi-service vehicle-mounted antenna according to claim 1, characterized in that: A sealing groove is provided on the mounting base.

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