CAT1 antenna for communication transmission of Internet of Things

Abstract

The utility model relates to the technical field of communication transmission devices of the Internet of Things, and discloses a CAT1 antenna for communication transmission of the Internet of Things, which comprises an antenna assembly and an intelligent mainboard, the intelligent mainboard is provided with an RF end, and the antenna assembly comprises a metal spiral spring, a straight section steel wire part, a copper foil microstrip line and an FR substrate. The straight section steel wire part is fixed at the bottom end of the metal spiral spring, the copper foil microstrip line is arranged on the FR substrate, the top side of the FR substrate is provided with an inclined plane, the tops of the FR substrate and the copper foil microstrip line extend to the inner side of the spring, the upper end of the copper foil microstrip line is provided with a first welding part, and the upper end of the first welding part is provided with a second welding part. According to the utility model, the utilization rate of the height space can be obviously improved, so that the problem that the effective height of the built-in antenna is limited by the compression of the internal height space of a product is solved, and the requirement of keeping stable radiation signals in various communication environments can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of Internet of Things communication transmission devices, and more specifically, to a CAT1 antenna for Internet of Things communication transmission. Background Art

[0002] With the development of new technologies in smart agriculture, smart cities, smart home appliances, industrial sensors, logistics tracking and other fields, the application scenarios of CAT1 antennas will become broader. With its technical advantages of low power consumption, low cost, wide coverage and high reliability, it will make important contributions to the realization of smart Internet of Things communication transmission.

[0003] Currently, due to the limited height space inside the product (usually less than 35mm in height), the built-in antenna is generally compressed by the internal height space of the product. The limitation of its effective height weakens the antenna's radiation ability. The shielding and absorption interference of the motherboard and the surrounding deteriorating environment may cause the radiation signal to be weak, affecting the CAT1 antenna gain. Based on this, the utility model designs a CAT1 antenna for IoT communication transmission to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to provide a CAT1 antenna for Internet of Things communication transmission to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A CAT1 antenna for Internet of Things communication transmission includes an antenna assembly and an intelligent mainboard. The intelligent mainboard is provided with an RF terminal. The antenna assembly includes a metal coil spring, a straight steel wire portion, a copper foil microstrip line, and an FR substrate. The straight steel wire portion is fixed to the bottom end of the metal coil spring. The copper foil microstrip line is provided on the FR substrate. The top side of the FR substrate is provided with an inclined surface. The tops of the FR substrate and the copper foil microstrip line both extend to the inside of the spring. The upper end of the copper foil microstrip line is provided with a first welding portion, which is welded and fixedly connected to the upper end of the straight steel wire portion. The bottom end of the copper foil microstrip line is provided with a second welding portion, which is welded and fixedly connected to the bottom end of the straight steel wire portion. The antenna assembly is plugged into the RF terminal. The RF terminal is provided with a third welding portion, which is welded and fixedly connected to the bottom end of the antenna assembly.

[0007] As a preferred technical solution of the present invention, the metal coil spring and the straight steel wire portion are both components made of nickel-plated stainless steel.

[0008] As a preferred technical solution of the present invention, the metal coil spring and the straight steel wire portion are an integrally formed structure.

[0009] As a preferred technical solution of the present invention, the thickness of the FR substrate is 0.8mm-0.85mm.

[0010] As a preferred technical solution of the present invention, a solder resist green oil layer is provided on the surface of the FR substrate, and the thickness of the solder resist green oil layer is 0.06mm-0.1mm.

[0011] As a preferred technical solution of the present invention, the height dimension of the antenna assembly is 31mm-32mm.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The utility model fixes a straight steel wire portion to the bottom end of a metal coil spring, arranges a copper foil microstrip line on an FR4 substrate, opens an inclined surface on the top side of the FR4 substrate, and the tops of the FR4 substrate and the copper foil microstrip line both extend to the inner side of the spring. A first welding portion at the upper end of the copper foil microstrip line is welded and fixedly connected to the upper end of the straight steel wire portion, and a second welding portion at the bottom end of the copper foil microstrip line is welded and fixedly connected to the bottom end of the straight steel wire portion. The antenna assembly formed by assembling the metal coil spring, the straight steel wire portion, the copper foil microstrip line and the FR4 substrate can significantly improve the height space utilization rate, thereby solving the problem that the effective height of the built-in antenna will be limited by the internal height space compression of the product, better meeting the requirements of maintaining stable radiation signals in various communication environments, and being conducive to improving the CAT1 antenna gain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the antenna assembly in a CAT1 antenna for Internet of Things communication transmission in the utility model;

[0015] Figure 2 This is a structural diagram of the antenna assembly and the intelligent mainboard in a CAT1 antenna for IoT communication transmission in the utility model;

[0016] Figure 3 This is a structural schematic diagram of the metal coil spring and the straight steel wire portion in a CAT1 antenna for Internet of Things communication transmission in the present utility model.

[0017] In the figure: 1. Metal coil spring; 101. Straight steel wire section; 2. Copper foil microstrip line; 201. First welding section; 202. Second welding section; 3. FR4 substrate; 301. Solder mask layer; 4. Smart motherboard; 401. RF terminal; 402. Third welding section. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figures 1 to 3 As shown, the utility model provides a CAT1 antenna for Internet of Things communication transmission, including an antenna assembly and an intelligent motherboard 4, the intelligent motherboard 4 is provided with an RF terminal 401, the antenna assembly includes a metal coil spring 1, a straight steel wire portion 101, a copper foil microstrip line 2 and an FR4 substrate 3, the straight steel wire portion 101 is fixed to the bottom end of the metal coil spring 1, the copper foil microstrip line 2 is provided on the FR4 substrate 3, the top side of the FR4 substrate 3 is provided with an inclined surface, and the top of the FR4 substrate 3 and the copper foil microstrip line 2 They all extend to the inner side of the spring 1. The upper end of the copper foil microstrip line 2 is provided with a first welding portion 201, which is welded and fixedly connected to the upper end of the straight steel wire portion 101. The bottom end of the copper foil microstrip line 2 is provided with a second welding portion 202, which is welded and fixedly connected to the bottom end of the straight steel wire portion 101. The antenna assembly is plugged into the RF end 401, and the RF end 401 is provided with a third welding portion 402, which is welded and fixedly connected to the bottom end of the antenna assembly.

[0020] Among them, such as Figure 3 As shown, the metal coil spring 1 and the straight steel wire portion 101 are both made of stainless steel plated with nickel, so that the metal coil spring 1 and the straight steel wire portion 101 have good corrosion resistance.

[0021] Among them, such as Figure 3 As shown, the metal coil spring 1 and the straight steel wire portion 101 are an integrally formed structure, thereby achieving the purpose of ensuring the overall structural strength of the metal coil spring 1 and the straight steel wire portion 101.

[0022] Among them, such as Figure 1 As shown, the thickness of the FR4 substrate 3 is 0.8mm-0.85mm, and a solder resist green oil layer 301 is provided on the surface of the FR4 substrate 3, which is beneficial to extending the service life of the FR4 substrate 3. The thickness of the solder resist green oil layer 301 is 0.06mm-0.1mm, and the height of the antenna component is 31mm-32mm.

[0023] The working principle of this utility model:

[0024] By fixing the straight steel wire portion 101 to the bottom end of the metal coil spring 1, the copper foil microstrip line 2 is arranged on the FR4 substrate 3, and a bevel is opened on the top side of the FR4 substrate 3. The tops of the FR4 substrate 3 and the copper foil microstrip line 2 both extend to the inner side of the spring 1. The first welding portion 201 at the upper end of the copper foil microstrip line 2 is welded and fixedly connected to the upper end of the straight steel wire portion 101, and the second welding portion 202 at the bottom end of the copper foil microstrip line 2 is welded and fixedly connected to the bottom end of the straight steel wire portion 101. The metal coil spring 1, the straight steel wire portion 101, the copper foil microstrip line 2 and the FR4 substrate 3 can be assembled to form an antenna assembly. The antenna assembly is plugged into the RF terminal 401, and the third welding portion 402 on the RF terminal 401 is welded and fixedly connected to the bottom end of the antenna assembly. The assembly is completed by simply connecting them. The microstrip line 2 can generate intermediate frequencies (1710MHZ-1910MHZ) and high frequencies (2110-2690MHZ), and the metal spring spiral 1 can generate low frequencies (824-960MHz), intermediate frequencies (1710-1910MHZ), and high frequencies (2110-2690MHZ). The antenna assembly formed by assembling the metal spiral spring 1, the straight steel wire portion 101, the copper foil microstrip line 2, and the FR4 substrate 3 significantly improves the height space utilization, thereby solving the problem of the built-in antenna being limited in effective height by the internal height space compression of the product, and better meeting the demand for maintaining stable radiation signals in various communication environments.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CAT1 antenna for IoT communication transmission, characterized by: including an antenna assembly and an intelligent mainboard (4); The intelligent mainboard (4) is provided with an RF terminal (401), and the antenna assembly comprises a metal coil spring (1), a straight steel wire portion (101), a copper foil microstrip line (2), and an FR4 substrate (3), wherein the straight steel wire portion (101) is fixed to the bottom end of the metal coil spring (1), and the copper foil microstrip line (2) is provided on the FR4 substrate (3). The top side of the FR4 substrate (3) is provided with an inclined surface, and the tops of the FR4 substrate (3) and the copper foil microstrip line (2) both extend to the inner side of the spring (1); The upper end of the copper foil microstrip line (2) is provided with a first welding portion (201), and the first welding portion (201) is welded and fixedly connected to the upper end of the straight steel wire portion (101); the bottom end of the copper foil microstrip line (2) is provided with a second welding portion (202), and the second welding portion (202) is welded and fixedly connected to the bottom end of the straight steel wire portion (101); the antenna component is plugged into the RF end (401), and the RF end (401) is provided with a third welding portion (402), and the third welding portion (402) is welded and fixedly connected to the bottom end of the antenna component.

2. The CAT1 antenna for Internet of Things communication transmission according to claim 1, characterized in that: The metal coil spring (1) and the straight steel wire portion (101) are both components made of nickel-plated stainless steel.

3. The CAT1 antenna for Internet of Things communication transmission according to claim 2, characterized in that: The metal coil spring (1) and the straight steel wire portion (101) are an integrally formed structure.

4. The CAT1 antenna for Internet of Things communication transmission according to claim 1, characterized in that: The thickness of the FR4 substrate (3) is 0.8 mm to 0.85 mm.

5. The CAT1 antenna for Internet of Things communication transmission according to claim 1, characterized in that: A solder resist green oil layer (301) is provided on the surface of the FR4 substrate (3), and the thickness of the solder resist green oil layer (301) is 0.06 mm-0.1 mm.

6. The CAT1 antenna for Internet of Things communication transmission according to claim 1, characterized in that: The height of the antenna assembly is 31mm-32mm.

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