Multi-band integrated antenna assembly

Abstract

The utility model provides a multi-band integrated antenna assembly, relates to the technical field of wireless communication, and solves the problems of large space, strong interference and difficult assembly caused by independent arrangement of multiple antennas of an industrial router. The multi-band integrated antenna assembly comprises: a substrate having an electromagnetic shielding layer; the radio frequency antenna unit is fixedly connected to the first surface of the substrate; the wireless network antenna unit is fixedly connected to the first surface of the substrate and is adjacent to the radio frequency antenna unit; and the Bluetooth antenna unit is fixedly connected to the middle part of the first surface of the substrate. According to the scheme of the utility model, multi-frequency antenna integration is realized, equipment installation space is substantially reduced, interference is reduced, and assembly and maintenance are simplified.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and in particular to a multi-band integrated antenna assembly. Background Technology

[0002] With the rapid development of the Industrial Internet, intrinsically safe 5G industrial routers are being used more and more widely in complex industrial scenarios. Currently, the communication functions of these routers mainly rely on independently configured 5G radio frequency antennas, WiFi antennas, and Bluetooth antennas to meet the needs of multi-band signal transmission.

[0003] However, in industrial settings, installation space for equipment is often very limited, and the working environment contains numerous complex sources of electromagnetic interference. Traditional 5G RF antennas, WiFi antennas, and Bluetooth antennas are typically set up independently. This not only occupies a large amount of space but also makes it difficult to miniaturize the router, hindering its installation in space-constrained industrial equipment. Furthermore, the excessive number of antennas can exacerbate electromagnetic interference between them, severely affecting signal transmission quality and stability.

[0004] Furthermore, the setup of multiple independent antennas increases assembly complexity and cost. Whether it's installation and debugging during manufacturing or the subsequent inspection and repair of each antenna during maintenance, it requires significantly more manpower and resources. Moreover, independent antennas face greater challenges in terms of reliability and durability when exposed to harsh conditions such as vibration, dust, and humidity in industrial environments. Utility Model Content

[0005] This invention provides a multi-band integrated antenna assembly, which solves the problems of large space requirements, strong interference, and difficult assembly caused by the independent setting of multiple antennas in industrial routers.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A multi-band integrated antenna assembly, comprising:

[0008] A substrate with an electromagnetic shielding layer;

[0009] A radio frequency antenna unit fixedly connected to the first surface of the substrate;

[0010] A wireless network antenna unit fixedly connected to the first surface of the substrate and adjacent to the radio frequency antenna unit;

[0011] A Bluetooth antenna unit is fixedly connected to the middle of the first surface of the substrate.

[0012] Optionally, the radio frequency antenna unit includes:

[0013] A radio frequency antenna bracket, the bottom of which is fixedly connected to the substrate by screws;

[0014] The radio frequency antenna is fixedly connected to the outer surface of the radio frequency antenna bracket. The radio frequency antenna is made by bending a metal plate multiple times. The radio frequency antenna includes a first horizontal plane, a first vertical plane, a second vertical plane, and a first wiring surface. The first horizontal plane, the second vertical plane, and the first wiring surface are all perpendicular to the first vertical plane.

[0015] The first wire electrically connected to the first wiring surface.

[0016] Optionally, the radio frequency antenna bracket is a cuboid made of plastic or composite material, and the radio frequency antenna is attached to the outer surface of the radio frequency antenna bracket.

[0017] Optionally, the wireless network antenna unit includes:

[0018] A wireless network antenna bracket, the bottom of which is fixedly connected to the substrate by screws;

[0019] The wireless network antenna is fixedly connected to the outer surface of the wireless network antenna bracket. The wireless network antenna is made by bending a metal plate multiple times. The wireless network antenna includes a second horizontal plane, a third vertical plane, and a second wiring surface. The second horizontal plane and the second wiring surface are both perpendicular to the third vertical plane.

[0020] The second wire is electrically connected to the second terminal.

[0021] Optionally, the wireless network antenna bracket is a cuboid made of plastic or composite material, and the wireless network antenna is attached to the outer surface of the wireless network antenna bracket.

[0022] Optionally, the Bluetooth antenna unit includes:

[0023] A Bluetooth antenna cover, the bottom of which is fixedly connected to the substrate by screws;

[0024] A Bluetooth antenna that contacts the bottom of the Bluetooth antenna cover and is fixedly connected to the substrate by screws;

[0025] A third wire electrically connected to the Bluetooth antenna.

[0026] Optionally, the Bluetooth antenna cover includes: a first cavity, the inner surface of which is provided with a slot; the Bluetooth antenna is a U-shaped metal plate, the surface of which is provided with through holes, hollowed-out grooves and snap-fit ​​claws, the snap-fit ​​claws being snapped into the slot.

[0027] Optionally, it also includes an internally hollow multi-band integrated radome, with a bottom opening of the multi-band integrated radome and the edge of the opening fitting against the edge of the substrate.

[0028] Optionally, the substrate is a rectangular plate made of plastic or composite material.

[0029] Optionally, the radio frequency antenna unit is fixedly connected to the right angle of the rectangular plate by screws.

[0030] The above-described solution of this utility model has at least the following beneficial effects:

[0031] This utility model achieves the following technical effects by integrating a 5G radio frequency antenna, a WiFi antenna, and a Bluetooth antenna onto an integrated substrate:

[0032] (1) The integration of multi-frequency antennas significantly reduces the size, making them suitable for compact spaces in industrial equipment;

[0033] (2) The substrate has a shielding structure, which reduces electromagnetic interference between antennas and external sources, and improves signal stability;

[0034] (3) Component-based design simplifies the assembly process and reduces production and maintenance costs;

[0035] (4) The improved protection of the radome and the enhanced mechanical strength of the substrate enhance the resistance to vibration, dust and moisture, and extend the service life in industrial environments. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the multi-band integrated antenna assembly proposed in this utility model;

[0037] Figure 2 This is an exploded structural diagram of the multi-band integrated antenna assembly proposed in this utility model;

[0038] Figure 3 This is a schematic diagram of the radio frequency antenna structure of the multi-band integrated antenna assembly proposed in this utility model;

[0039] Figure 4 This is a schematic diagram of the wireless network antenna structure of the multi-band integrated antenna assembly proposed in this utility model;

[0040] Figure 5 This is a schematic diagram of the Bluetooth antenna structure of the multi-band integrated antenna assembly proposed in this utility model;

[0041] Figure 6 This is a schematic diagram of the Bluetooth antenna radome structure of the multi-band integrated antenna assembly proposed in this utility model;

[0042] Among them, 1. substrate; 2. radio frequency antenna unit; 21. radio frequency antenna bracket; 22. radio frequency antenna; 221. first horizontal plane; 222. first vertical plane; 223. second vertical plane; 224. first wiring surface; 23. first wire; 3. wireless network antenna unit; 31. wireless network antenna bracket; 32. wireless network antenna; 321. second horizontal plane; 322. third vertical plane; 323. second wiring surface; 33. second wire; 4. Bluetooth antenna unit; 41. Bluetooth antenna cover; 411. first cavity; 412. card slot; 42. Bluetooth antenna; 421. through hole; 422. hollow groove; 423. card claw; 43. third wire. Detailed Implementation

[0043] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] like Figure 1 As shown, an embodiment of this utility model proposes a multi-band integrated antenna assembly, comprising:

[0045] Substrate 1 with an electromagnetic shielding layer;

[0046] Radio frequency antenna unit 2 is fixedly connected to the first surface of the substrate 1;

[0047] A wireless network antenna unit 3 is fixedly connected to the first surface of the substrate 1 and is adjacent to the radio frequency antenna unit 2;

[0048] Bluetooth antenna unit 4 is fixedly connected to the middle of the first surface of the substrate 1.

[0049] In this embodiment, the substrate 1 is a rectangular plate-shaped body, which is made of multiple layers. The electromagnetic shielding layer is made of electromagnetic shielding material, such as metal material, which has both mechanical strength and electromagnetic isolation function. Its built-in grounding layer can suppress signal crosstalk between internal antenna units and provide an integrated mounting carrier for all antenna units.

[0050] The radio frequency antenna unit 2 (i.e., the 5G antenna) is fixed to the upper surface and left and right edges of the substrate 1, and adopts a planar inverted F antenna (PIFA) structure. An irregular polygonal radiating patch is formed by etching to precisely cover the 5G frequency bands such as n41 / n78 / n79; it is directly connected to the router's radio frequency module through a feed line;

[0051] Wireless network antenna unit 3 (i.e., WiFi antenna) is symmetrically distributed on the upper left and right sides of substrate 1, adjacent to RF antenna unit 2 but electromagnetically isolated. It adopts a dual PIFA structure: the ends of two L-shaped metal radiating arms are connected by a bent metal wire to extend the electrical length to simultaneously support 2.4GHz / 5GHz dual-band WiFi 6 signals, and are directly connected to the router's WiFi module through a feed wire;

[0052] Bluetooth antenna unit 4 is located in the middle of the upper surface of substrate 1 and adopts a microstrip antenna structure. A rectangular radiating patch is etched, and the patch size and feed point position are precisely tuned to accurately cover the 2.4GHz Bluetooth 5.2 band. The Bluetooth module is connected through a feed wire, and positioning holes and snap-fit ​​structures are integrated to ensure assembly accuracy and vibration resistance.

[0053] The multi-band integrated antenna assembly also includes an internally hollow multi-band integrated antenna radome with an opening at the bottom. The edge of the opening is attached to the edge of the substrate 1. The radome is made of plastic or composite material with high wave transmission performance, which encapsulates the entire integrated antenna assembly. The radome can not only protect the internal antenna unit from damage such as dust, moisture, and mechanical impact in the industrial environment, but also reduce the impact of external electromagnetic interference on antenna performance to a certain extent, while maintaining the integrity and aesthetics of the antenna assembly.

[0054] The technical solution of this utility model realizes the integration of multi-frequency antennas, which significantly reduces the equipment installation space, reduces interference, and simplifies assembly and maintenance.

[0055] like Figure 2 and Figure 3 As shown, in an optional embodiment of this utility model, the radio frequency antenna unit 2 is fixedly connected to the right angle of the rectangular plate by screws; the radio frequency antenna unit 2 includes:

[0056] The bottom of the radio frequency antenna bracket 21 is fixedly connected to the substrate 1 by screws;

[0057] The radio frequency antenna 22 is fixedly connected to the outer surface of the radio frequency antenna bracket 21. The radio frequency antenna 22 is made by bending a metal plate multiple times. The radio frequency antenna 22 includes a first horizontal plane 221, a first vertical plane 222, a second vertical plane 223 and a first wiring surface 224. The first horizontal plane 221, the second vertical plane 223 and the first wiring surface 224 are all perpendicular to the first vertical plane 222.

[0058] The first wire 23 is electrically connected to the first wiring surface 224;

[0059] The radio frequency antenna bracket 21 is a cuboid made of plastic or composite material, and the radio frequency antenna 22 is attached to the outer surface of the radio frequency antenna bracket 21.

[0060] In this embodiment, the radio frequency antenna unit 2 is fixed to the right-angled edge of the substrate 1 by screws, and the number of such units is preferably 4 sets, that is, one radio frequency antenna unit 2 is provided at each right-angled edge of the rectangular substrate 1; the core of the radio frequency antenna unit 2 consists of two parts:

[0061] (1) The radio frequency antenna bracket 21 is a cuboid plastic / composite material bracket. The bottom is locked to the base plate 1 by screws, providing insulation support and mechanical buffer. The design of screw fixing + plastic bracket improves the vibration resistance and meets the reliability requirements of industrial environment.

[0062] (2) Radio frequency antenna 22: It is formed by bending a single metal plate multiple times and attaching it to the outer surface of the bracket 21 to form a PIFA structure. Its right-angle edge mounting + three-dimensional bending structure maximizes the use of the outer space of the substrate and supports miniaturization design.

[0063] After being bent, the radio frequency antenna 22 contains four functional surfaces. The first horizontal surface 221 is the main radiating patch with an irregular polygonal outline, covering 5G frequency bands such as n41 / n78 / n79. The first vertical surface 222 and the second vertical surface 223 partially form a grounding branch to enhance impedance matching and signal stability. The first wiring surface 224 is connected to the first conductor 23 (i.e., the feed line) to transmit signals to the router's radio frequency module.

[0064] like Figure 2 and Figure 4 As shown, in an optional embodiment of the present invention, the wireless network antenna unit 3 includes:

[0065] Wireless network antenna bracket 31, the bottom of which is fixedly connected to the base plate 1 by screws;

[0066] The wireless network antenna 32 is fixedly connected to the outer surface of the wireless network antenna bracket 31. The wireless network antenna 32 is made by bending a metal plate multiple times. The wireless network antenna 32 includes a second horizontal plane 321, a third vertical plane 322, and a second wiring surface 323. The second horizontal plane 321 and the second wiring surface 323 are both perpendicular to the third vertical plane 322.

[0067] The second wire 33 is electrically connected to the second wiring surface 323;

[0068] The wireless network antenna bracket 31 is a cuboid made of plastic or composite material, and the wireless network antenna 32 is attached to the outer surface of the wireless network antenna bracket 31.

[0069] In this embodiment, the wireless network antenna unit 3 (i.e., WiFi antenna) is fixed to the upper left and right sides of the substrate 1 by screws, and its core components include:

[0070] (1) Wireless network antenna bracket 31 is a cuboid plastic / composite material bracket with screws at the bottom fixed to the base plate 1, providing insulation support and mechanical buffer;

[0071] (2) Wireless network antenna 32 is formed by bending a single metal plate multiple times and attaching it to the outer surface of bracket 31 to form a PIFA structure, thereby achieving a compact structure that utilizes the edge space of the substrate to support miniaturization.

[0072] After being bent, the wireless network antenna 32 forms three key functional surfaces. The second horizontal surface 321 serves as the main body of the L-shaped radiating arm, and its bent extension structure increases the electrical length to simultaneously cover 2.4GHz and 5GHz dual-band WiFi signals. The third vertical surface 322 is a grounding branch formed by the vertically bent part to optimize impedance matching. The second wiring surface 323 is used to connect the second conductor 33 (feed wire) to transmit signals to the router WiFi module.

[0073] In actual deployment, the wireless network antenna unit 3 needs to be symmetrically set with two independent units to achieve dual-band extension and signal enhancement; the two independent units are isolated by the substrate shielding layer.

[0074] like Figure 5 and Figure 6 As shown, in an optional embodiment of the present invention, the Bluetooth antenna unit 4 includes:

[0075] Bluetooth antenna cover 41, the bottom of which is fixedly connected to the base plate 1 by screws;

[0076] Bluetooth antenna 42, which contacts the bottom of the Bluetooth antenna cover 41 and is fixedly connected to the substrate 1 by screws;

[0077] The third wire 43 is electrically connected to the Bluetooth antenna 42;

[0078] The Bluetooth antenna cover 41 includes a first cavity 411, and the inner surface of the first cavity 411 is provided with a slot 412; the Bluetooth antenna 42 is a U-shaped metal plate, and the surface of the U-shaped metal plate is provided with a through hole 421, a hollow groove 422 and a locking claw 423, and the locking claw 423 is locked in the slot 412.

[0079] In this embodiment, the core components of the Bluetooth antenna unit 4 include a Bluetooth antenna cover 41 and a Bluetooth antenna 42. The bottom of the Bluetooth antenna cover 41 is fixed to the center of the substrate 1 by screws, and its first cavity 411 provides a sealed protective space. The inner wall slot 412 is a mechanical locking structure. The Bluetooth antenna 42 uses a U-shaped metal plate, whose U-shaped structure is three-dimensionally bent to form multi-directional radiation enhancement, improving signal coverage. The surface of the U-shaped metal plate includes:

[0080] (1) The through hole 421 is used to pass through the screw to achieve precise screw fixation with the substrate 1;

[0081] (2) The hollow slot 422 can serve as a routing channel for Bluetooth antenna signal transmission, rationally plan the signal path, and reduce signal interference. On the other hand, the hollow structure reduces the overall weight and may optimize the transmission and reception efficiency of Bluetooth signals by changing the electromagnetic characteristics of the structure, thereby adjusting the high-frequency signal path, achieving impedance matching, reducing reflection loss, and optimizing the 2.4GHz signal transmission efficiency.

[0082] (3) Snap-on claw 423: Engages with the snap-on slot 412 to form a vibration-resistant snap-on structure, which meets the structural stability requirements under industrial vibration environment.

[0083] (4) Three-dimensional protrusions and extensions: The three-dimensional protrusions on the surface of the U-shaped metal plate increase the effective radiation area and three-dimensional space utilization of the antenna. The impedance, gain and other electrical performance parameters of the antenna can be adjusted to adapt to the frequency band characteristics of Bluetooth signals, improve the signal coverage and transmission quality. At the same time, these protrusions can also serve as carriers for structural reinforcement or functional connection.

[0084] The third conductor 43 (feeder) is soldered to the power supply point of the metal plate and connected to the router's Bluetooth module.

[0085] When this multi-band integrated antenna assembly is used in mines, the Bluetooth antenna unit can be used to receive low-frequency small data packets, such as temperature data, location data, and gas concentration, sent by portable sensors, such as gas detectors and personnel positioning cards. The data is transmitted in low power via the Bluetooth 5.2 protocol in the 2.4GHz band. Its hollow impedance matching design can ensure stable data reception under multipath interference in the tunnel.

[0086] The WiFi antenna unit connects to fixed underground equipment, such as cameras and environmental monitoring stations, via dual 2.4GHz / 5GHz bands to form a high-speed local network. The 5GHz band transmits high-definition video streams, such as those from explosion-proof mining cameras; the 2.4GHz band aggregates data from multiple sensors, such as roof pressure sensors; and the symmetrical radiating arm structure enhances signal coverage and overcomes signal attenuation caused by roadway curvature.

[0087] When remote data transmission is required, the 5G radio frequency antenna unit will collect data and upload it through the n78 / n79 frequency band; utilizing the high gain characteristics of the irregular polygonal radiating patch, it can penetrate rock barriers and connect to the underground 5G mining base station; and transmit the data to the ground remote server (such as a safety production monitoring platform) in real time through the Sub-6GHz frequency band.

[0088] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A multi-band integrated antenna assembly, characterized in that, include: Substrate with electromagnetic shielding layer (1); Radio frequency antenna unit (2) fixedly connected to the first surface of the substrate (1); A wireless network antenna unit (3) is fixedly connected to the first surface of the substrate (1) and adjacent to the radio frequency antenna unit (2); Bluetooth antenna unit (4) is fixedly connected to the middle of the first surface of the substrate (1).

2. The multi-band integrated antenna assembly according to claim 1, characterized in that, The radio frequency antenna unit (2) includes: The bottom of the radio frequency antenna bracket (21) is fixedly connected to the substrate (1) by screws; The radio frequency antenna (22) is fixedly connected to the outer surface of the radio frequency antenna bracket (21). The radio frequency antenna (22) is made by bending a metal plate multiple times. The radio frequency antenna (22) includes a first horizontal plane (221), a first vertical plane (222), a second vertical plane (223), and a first wiring surface (224). The first horizontal plane (221), the second vertical plane (223), and the first wiring surface (224) are all perpendicular to the first vertical plane (222). The first wire (23) is electrically connected to the first wiring surface (224).

3. The multi-band integrated antenna assembly according to claim 2, characterized in that, The radio frequency antenna bracket (21) is a cuboid made of plastic or composite material, and the radio frequency antenna (22) is attached to the outer surface of the radio frequency antenna bracket (21).

4. The multi-band integrated antenna assembly according to claim 1, characterized in that, The wireless network antenna unit (3) includes: Wireless network antenna bracket (31), the bottom of which is fixedly connected to the base plate (1) by screws; The wireless network antenna (32) is fixedly connected to the outer surface of the wireless network antenna bracket (31). The wireless network antenna (32) is made by bending a metal plate multiple times. The wireless network antenna (32) includes a second horizontal plane (321), a third vertical plane (322) and a second wiring surface (323). The second horizontal plane (321) and the second wiring surface (323) are both perpendicular to the third vertical plane (322). The second wire (33) is electrically connected to the second wiring surface (323).

5. The multi-band integrated antenna assembly according to claim 4, characterized in that, The wireless network antenna bracket (31) is a cuboid made of plastic or composite material, and the wireless network antenna (32) is attached to the outer surface of the wireless network antenna bracket (31).

6. The multi-band integrated antenna assembly according to claim 1, characterized in that, The Bluetooth antenna unit (4) includes: Bluetooth antenna cover (41), the bottom of which is fixedly connected to the base plate (1) by screws; Bluetooth antenna (42) is in contact with the bottom of the Bluetooth antenna cover (41) and is fixedly connected to the substrate (1) by screws. A third wire (43) is electrically connected to the Bluetooth antenna (42).

7. The multi-band integrated antenna assembly according to claim 6, characterized in that, The Bluetooth antenna cover (41) includes: a first cavity (411), the inner surface of which is provided with a slot (412); the Bluetooth antenna (42) is a U-shaped metal plate, the surface of which is provided with a through hole (421), a hollow groove (422) and a locking claw (423), the locking claw (423) being engaged in the slot (412).

8. The multi-band integrated antenna assembly according to claim 1, characterized in that, It also includes a hollow multi-band integrated antenna radome with an opening at the bottom and the edge of the opening being attached to the edge of the substrate (1).

9. The multi-band integrated antenna assembly according to claim 1, characterized in that, The substrate (1) is a rectangular plate made of plastic or composite material.

10. The multi-band integrated antenna assembly according to claim 9, characterized in that, The radio frequency antenna unit (2) is fixedly connected to the right angle of the rectangular plate by screws.

Images