An antenna device having a heating structure

Abstract

The utility model provides a kind of antenna device with heating structure, it is equipped with substrate, antenna assembly includes the antenna body made of metal material, antenna body is centrally arranged in the copper foil layer of substrate by etching process or stamping process, heating conductor is made of metal material, fixedly set on the surface of substrate, and heating conductor takes the geometric center of antenna body as surrounding center, and is distributed in the outside or inside plane space of antenna body, heating conductor is used to heat the circumferential space of antenna body, and at least first distance radial gap between heating conductor and antenna body edge is provided. By the utility model, the purpose of thawing ice and snow on the antenna surface can be achieved, while avoiding the negative impact of heating conductor on the signal radiation operation of antenna assembly.

Description

Technical Field

[0001] This utility model belongs to the field of antenna design technology, and in particular relates to an antenna device with a heating structure. Background Technology

[0002] When outdoor antenna devices face extreme weather conditions such as rain, snow, or frost, ice and snow will cover the antenna surface, which will significantly affect the antenna's resonant frequency, VSWR, gain, and polarization purity, resulting in weakened antenna signal or even failure to work.

[0003] Conventional methods for removing ice and snow from antenna devices include adding heating coils directly to the antenna surface. When needed, the heating coils are activated to generate heat and melt the ice and snow. However, since the heating coils are made of metal, the conventional arrangement of the heating coils can easily shield and interfere with the antenna's signal radiation, affecting the normal operation of the antenna device. Utility Model Content

[0004] This invention aims to provide an antenna device with a heating structure to solve the technical problem in the prior art where heating coils directly deployed on the antenna surface in conventional antenna device heating methods can negatively impact the signal radiation performance of the antenna device.

[0005] To solve the above problems, the technical solution of this utility model is: an antenna device with a heating structure, comprising: substrate; An antenna assembly, comprising an antenna body made of a metallic material, the antenna body being fixedly disposed in a thin metallic layer of the substrate; A heating conductor, made of a metallic material, is fixedly disposed on the surface of the substrate. The heating conductor is configured such that it is distributed around the geometric center of the antenna body in the outer or inner planar space of the antenna body, and is used to heat the circumferential space of the antenna body. A radial gap of at least a first distance is provided between the heating conductor and the edge of the antenna body.

[0006] Preferably, the substrate includes a flexible printed circuit board, a rigid printed circuit board, or a rigid-flex printed circuit board.

[0007] Preferably, the antenna assembly includes a signal transmission line or a contact structure, and the antenna body is electrically connected to the signal transmission line or the contact structure. The signal transmission line or the contact structure is used to realize signal transmission between the antenna body and an external terminal device.

[0008] Preferably, the antenna body is centered in the copper foil layer of the substrate by etching or stamping. The heating conductor is fixed to the surface of the substrate by hot pressing, cold pressing or etching.

[0009] Preferably, the substrate has a first end face and a second end face, the outer layer pattern surface formed on the substrate by the antenna body, and the heating conductor are both located on the first end face of the substrate.

[0010] Preferably, the substrate has a first end face and a second end face, the outer layer pattern surface formed by the antenna body on the substrate is located on the first end face of the substrate, and the heating conductor is located on the second end face of the substrate.

[0011] Preferably, the first distance is limited to 10mm.

[0012] Preferably, the heating conductor is a single continuous conductor, and the heating conductor is made of copper or stainless steel. The heating conductor is provided with positive and negative wires connected to the beginning and end of the heating conductor, respectively. The heating conductor is configured such that an external current flows through the heating conductor based on the positive and negative wires, and the heating conductor generates heat by short-circuiting.

[0013] Preferably, along the extension direction of the substrate plane, the heating conductor is distributed in multiple layers in the outer or inner plane space of the antenna body by bending, and the adjacent heating conductors in the multiple layers do not contact each other, and the first and last ends of the heating conductor are arranged adjacent to each other. A radial gap of at least a first distance is provided between the edge of the multi-layered heating conductor adjacent to the antenna body and the edge of the antenna body adjacent to the heating conductor.

[0014] Preferably, the substrate is provided with a plurality of positioning holes, which are used to realize the assembly and positioning function between the substrate, the antenna assembly and the heating conductor.

[0015] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art: This invention provides an antenna device with a heating structure, including a substrate, an antenna assembly, and a heating conductor. The antenna body is centrally disposed in the copper foil layer of the substrate through etching or stamping processes. The heating conductor is fixedly disposed on the surface of the substrate through hot pressing, cold pressing, or etching processes. The heating conductor is distributed around the geometric center of the antenna body in the outer or inner planar space of the antenna body. There is a radial gap of at least 10 mm between the heating conductor and the edge of the antenna body. In this invention, when the surface of the antenna body is covered with ice and snow, the current flowing in the heating conductor achieves self-short circuit and generates heat. The heat is conducted through the substrate to the area where the antenna body is located, achieving the purpose of melting the ice and snow. At the same time, the radial gap distance between the heating conductor and the edge of the antenna body is limited to avoid the heating conductor from negatively affecting the signal radiation operation of the antenna assembly. In addition, in this invention, the antenna assembly and the heating conductor can be arranged on one or both sides, and the arrangement shape of the heating conductor can be adjusted according to actual needs, making the assembly method of each component of the antenna device more flexible and effectively improving the applicability of the antenna device. Attached Figure Description

[0016] Figure 1 This utility model provides a schematic diagram of the structure of an antenna device with a single-sided arrangement and the heating conductor located outside the antenna body. Figure 2 This utility model provides a schematic diagram of the first end face structure of an antenna device with a double-sided arrangement and the heating conductor located on the outside of the antenna body. Figure 3 This utility model provides a schematic diagram of the second end face structure of an antenna device with a double-sided arrangement and the heating conductor located on the outside of the antenna body. Figure 4 This utility model provides a schematic diagram of the structure of an antenna device in which the heating conductor is located inside the antenna body.

[0017] Explanation of reference numerals in the attached drawings: 1: substrate; 2: antenna body; 3: signal transmission line; 4: heating conductor; 5: positive and negative wires; 6: positioning hole. Detailed Implementation

[0018] The antenna device with a heating structure proposed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following description and claims.

[0019] See Figures 1-4 This embodiment provides an antenna device with a heating structure, which enables the rapid melting of ice and snow covering the outside of the antenna device in extreme weather conditions with extremely low outdoor temperatures. The main structure of the antenna device includes a substrate 1, an antenna assembly, and a heating conductor 4.

[0020] The substrate 1 is a flat plate structure, which serves as a carrier for the antenna assembly and the heating conductor 4.

[0021] The antenna assembly includes an antenna body 2 made of metal material. The antenna body 2 is centrally formed and fixed in a thin metal layer of a substrate 1 by etching or stamping processes. In one embodiment, the thin metal layer of the substrate 1 is a copper foil layer. In this embodiment, the antenna body 2 serves as the radiating / receiving surface of the antenna device, used to complete the energy conversion between electromagnetic waves and high-frequency current, and to determine the antenna's radiation pattern, gain, and polarization. The substrate 1 has a copper foil layer and a thin film layer. The antenna body 2 with a specified geometric structure can be formed in the copper foil layer of the substrate 1 by etching or stamping processes.

[0022] The heating conductor 4 is fixedly disposed on the surface of the substrate 1 by hot pressing, cold pressing, or etching. In one embodiment, the external heating conductor 4 can be solidified and connected to the thin film layer of the substrate 1 by high pressure. In another embodiment, the heating conductor 4 can be generated in the thin metal layer of the substrate 1 by etching. The heating conductor 4 is configured such that it is distributed around the geometric center of the antenna body 2 in the outer or inner planar space of the antenna body 2. The heating conductor 4 is used to heat the circumferential space of the antenna body 2. The heating method of the heating conductor 4 includes generating heat by itself and conducting it to a designated location, or directly conducting external heat to a designated location.

[0023] It is worth noting that, see Figure 1 and Figure 4 In this embodiment, there are two ways to arrange the antenna body 2 and the heating conductor 4 in the same plane direction. One is that the heating conductor 4 is located outside the antenna body 2, and the other is that the antenna body 2 (the antenna body 2 itself is arranged in a wraparound form, such as a wireless charging coil) is located outside the heating conductor 4. Both arrangements can realize the function of the heating conductor 4 to conduct heat to the antenna body 2.

[0024] Furthermore, a radial gap of at least a first distance is provided between the heating conductor 4 and the edge of the antenna body 2, that is, the heating conductor 4 and the edge of the antenna body 2 do not contact each other, and the minimum distance between them is greater than the first distance. This is to ensure that the heating conductor 4 and the antenna body 2 meet the electrical isolation conditions, avoid the heating conductor 4 from generating destructive radiation to the main lobe of the antenna, ensure that the antenna gain in the vertical direction does not decrease, the antenna pattern is not distorted, and reduce the disturbance of the heating conductor 4 to the antenna radiation field to a negligible level.

[0025] The specific structure and functionality of the antenna device with a heating structure provided in this embodiment will be described in further detail below: Preferably, in one embodiment, the substrate 1 includes a flexible printed circuit board, a rigid printed circuit board, or a rigid-flex printed circuit board. A flexible printed circuit board refers to a printed circuit board with bending characteristics made of a flexible insulating substrate (such as polyimide PI, polyester PET, etc.). Placing the antenna body 2 on a flexible printed circuit board improves the assembly flexibility and applicability of the antenna device. A rigid printed circuit board refers to a printed circuit board with good mechanical strength and dimensional stability made of a rigid substrate (such as FR-4, aluminum substrate, ceramic, etc.). Placing the antenna body 2 on a rigid printed circuit board improves the structural strength of the antenna device. A rigid-flex printed circuit board refers to a composite printed circuit board that integrates rigid and flexible areas into a single unit through lamination and through-hole interconnection processes.

[0026] Preferably, the antenna assembly includes a signal transmission line 3 or a contact structure (not shown in the figure). The antenna body 2 is electrically connected to the signal transmission line 3 and the contact structure. The signal transmission line 3 or the contact structure is used to realize signal transmission between the antenna body and the external terminal device.

[0027] That is, the signal transmission line 3 and the antenna body 2 are electrically connected. The two ends of the signal transmission line 3 are connected to the antenna body 2 and the external terminal device, respectively, to realize the signal transmission function. The signal transmission line 3 can be fixed to the surface of the substrate 1 by adhesive. The contact structure can be directly fixed to the antenna body 2. The external terminal device is also equipped with a matching contact structure. The antenna body 2 and the external terminal device can directly contact each other through the contacts to realize the signal transmission function.

[0028] Preferably, in one embodiment, the substrate 1 has a first end face and a second end face. The side surface of the antenna pattern exposed after etching or stamping in the substrate 1 is set as the outer layer pattern surface formed on the substrate 1 by the antenna body 2. The outer layer pattern surface formed on the substrate 1 by the antenna body 2 and the heating conductor 4 are both located on the first end face of the substrate 1, that is, the antenna body 2 and the heating conductor 4 are arranged on one side.

[0029] In another embodiment, the substrate 1 has a first end face and a second end face. The outer layer pattern surface of the antenna body 2 formed on the substrate 1 is located on the first end face of the substrate 1, and the heating conductor 4 is located on the second end face of the substrate 1. That is, the antenna body 2 and the heating conductor 4 are arranged on both sides. The antenna body 2 and the heating conductor 4 can be arranged on one side or both sides, which can be selected according to the actual arrangement requirements of the antenna device, thereby improving the assembly flexibility of the antenna device.

[0030] The heating conductor 4 is distributed in the outer or inner planar space of the antenna body 2. Both single-sided and double-sided arrangements are applicable. This embodiment will not provide specific details on each arrangement.

[0031] Preferably, in one embodiment, the first distance is limited to 10mm, that is, there is at least a 10mm radial gap between the heating conductor 4 and the edge of the antenna body 2. According to the near-field boundary calculation method and the coupling attenuation empirical formula, when the distance between the heating conductor 4 and the edge of the antenna body 2 reaches 10mm or more, the influence of the heating conductor 4 on the signal radiation performance of the antenna body 2 can be weakened to negligible.

[0032] Preferably, in one embodiment, the heating conductor 4 employs a heating method that generates heat itself. The heating conductor 4 is a single continuous conductor. In the scheme using an external heating conductor 4, the heating conductor 4 is made of copper or stainless steel. Positive and negative wires 5 are respectively connected to the beginning and end of the heating conductor 4. The heating conductor 4 is configured such that an external current flows through the heating conductor 4 based on the positive and negative wires 5, causing the heating conductor 4 to short-circuit and thus generate heat.

[0033] Furthermore, along the plane of the substrate 1, the heating conductor 4 is distributed in multiple layers around the outer or inner plane of the antenna body 2 by bending. This increases the distribution density of the heating conductor 4, improving its heating efficiency. Adjacent heating conductors 4 in the multiple layers do not contact each other, preventing short circuits between local heating conductors 4 that could affect the uniform heating of the antenna body 2. Simultaneously, a radial gap of at least a first distance is provided between the edges of the multiple layers of heating conductor 4 adjacent to the antenna body 2 and the edges of the antenna body 2 adjacent to the heating conductor 4. That is, when the heating conductor 4 is distributed in the outer plane of the antenna body 2, there is at least a 10mm gap between the inner edge of the heating conductor 4 and the outer edge of the antenna body 2; similarly, when the heating conductor 4 is distributed in the inner plane of the antenna body 2, there is at least a 10mm gap between the outer edge of the heating conductor 4 and the inner edge of the antenna body 2.

[0034] The multi-layered surrounding geometry formed by the heating conductor 4 on the plane will not be specifically limited in this embodiment. For example, it can form a circular multi-layered surrounding structure, a rectangular multi-layered surrounding structure, or an irregular multi-layered surrounding structure.

[0035] Preferably, in one embodiment, the first and last ends of the heating conductor 4 are arranged adjacent to each other on the substrate 1 (close but not in direct conductive contact), so that the positive and negative wires 5 can be easily stored and organized together.

[0036] Preferably, in one embodiment, the substrate 1 is provided with a plurality of positioning holes 6, which are used to realize the assembly positioning function between the substrate 1, the antenna assembly and the heating conductor 4, thereby improving the assembly efficiency between the substrate 1, the antenna assembly and the heating conductor 4.

[0037] In summary, this utility model provides an antenna device with a heating structure, including a substrate 1, an antenna assembly, and a heating conductor 4. The antenna body 2 is centrally disposed in the copper foil layer of the substrate 1 by etching or stamping. The heating conductor 4 is fixedly disposed on the surface of the substrate 1 by hot pressing. The heating conductor 4 is distributed around the geometric center of the antenna body 2 in the outer or inner planar space. There is a radial gap of at least 10 mm between the heating conductor 4 and the edge of the antenna body 2. In this utility model, when the surface of the antenna body 2 is covered with ice and snow, the current flowing in the heating conductor 4 achieves short circuit and generates heat. The heat is conducted through the substrate 1 to the area where the antenna body 2 is located, achieving the purpose of melting the ice and snow. At the same time, the radial gap distance between the heating conductor 4 and the edge of the antenna body 2 is limited to avoid the heating conductor 4 from having a negative impact on the signal radiation operation of the antenna assembly. In addition, in this utility model, the antenna assembly and the heating conductor 4 can be arranged on one side or both sides. The arrangement shape of the heating conductor 4 can be adjusted according to actual needs, making the assembly method of each component of the antenna device more flexible and effectively improving the applicability of the antenna device.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. An antenna device with a heating structure, characterized in that, include: substrate; An antenna assembly, comprising an antenna body made of a metallic material, the antenna body being fixedly disposed in a thin metallic layer of the substrate; A heating conductor, made of a metallic material, is fixedly disposed on the surface of the substrate. The heating conductor is configured such that it is distributed around the geometric center of the antenna body in the outer or inner planar space of the antenna body, and is used to heat the circumferential space of the antenna body. A radial gap of at least a first distance is provided between the heating conductor and the edge of the antenna body.

2. The antenna device with a heating structure as described in claim 1, characterized in that, The substrate includes a flexible printed circuit board, a rigid printed circuit board, or a rigid-flex printed circuit board.

3. The antenna device with a heating structure as described in claim 1, characterized in that, The antenna assembly includes a signal transmission line or a contact structure. The antenna body is electrically connected to the signal transmission line or the contact structure. The signal transmission line or the contact structure is used to realize signal transmission between the antenna body and an external terminal device.

4. The antenna device with a heating structure as described in claim 1, characterized in that, The antenna body is centered in the copper foil layer of the substrate by etching or stamping processes; The heating conductor is fixed to the surface of the substrate by hot pressing, cold pressing or etching.

5. The antenna device with a heating structure as described in claim 1, characterized in that, The substrate has a first end face and a second end face. The outer layer pattern surface formed on the substrate by the antenna body and the heating conductor are both located on the first end face of the substrate.

6. The antenna device with a heating structure as described in claim 1, characterized in that, The substrate has a first end face and a second end face. The outer layer pattern surface formed on the substrate by the antenna body is located on the first end face of the substrate, and the heating conductor is located on the second end face of the substrate.

7. The antenna device with a heating structure as described in claim 1, characterized in that, The first distance is limited to 10mm.

8. The antenna device with a heating structure as described in claim 1, characterized in that, The heating conductor is a single continuous conductor, and the heating conductor is made of copper or stainless steel. The heating conductor is provided with positive and negative wires connected to the beginning and end of the heating conductor, respectively. The heating conductor is configured such that an external current flows through the heating conductor based on the positive and negative wires, and the heating conductor generates heat by short-circuiting.

9. The antenna device with a heating structure as described in claim 8, characterized in that, Along the extension direction of the substrate plane, the heating conductor is distributed in multiple layers in the outer or inner plane space of the antenna body by bending, and the adjacent heating conductors in the multiple layers do not contact each other, and the first and last ends of the heating conductor are arranged adjacent to each other. A radial gap of at least a first distance is provided between the edge of the multi-layered heating conductor adjacent to the antenna body and the edge of the antenna body adjacent to the heating conductor.

10. The antenna device with a heating structure as described in claim 1, characterized in that, The substrate is provided with a plurality of positioning holes, which are used to realize the assembly and positioning function between the substrate, the antenna assembly and the heating conductor.

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