Antenna assembly and communication terminal

Abstract

The utility model provides an antenna assembly and a communication terminal, the antenna assembly comprising: a circuit substrate and an antenna; the antenna comprising an antenna radiator and an antenna feeding point and an antenna feeding point arranged on both sides of the antenna radiator, the antenna feeding point and the antenna feeding point are both electrically connected to the circuit substrate; wherein the resonant wavelength of the antenna radiator is positively correlated with the circumference of the antenna radiator. Compared with the prior art, the antenna assembly of the utility model can directly set the antenna on the circuit substrate of the communication terminal, so that it is built into the interior of the terminal together with the circuit substrate, and does not occupy the external space of the terminal. The overall volume of the antenna is small and it is not easy to occupy the internal space of the terminal, which makes the design of the internal space of the terminal simpler, can adapt to thin and light equipment, reduces costs, and improves product competitiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of communication terminals, and in particular to an antenna component and a communication terminal. Background Art

[0002] Antenna is a converter that converts the guided waves propagating on the transmission line into electromagnetic waves propagating in an unbounded medium (usually free space), or vice versa. It is a component used to transmit or receive electromagnetic waves in radio equipment. Engineering systems such as radio communications, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, and radio astronomy, all of which use electromagnetic waves to transmit information, rely on antennas to work.

[0003] With the development of wireless communication technology, there are more and more types of communication terminal antennas. Most of the IoT antennas are in the form of rubber sticks, so the size of the communication terminal equipment is basically large. The IoT antenna is usually placed on the outside of the device and fixedly connected by cables and adapters. Since the current communication terminal is mainly lightweight, the antenna design requires the antenna to be smaller and smaller. The 433MHz antenna design of the existing communication terminal is basically placed outside the device in the form of a rubber stick spiral spring antenna, but this type of antenna is relatively expensive, which increases the cost of the equipment, is not beautiful, and cannot meet the needs of lightweight equipment. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide an antenna assembly and a communication terminal.

[0005] An embodiment of the utility model provides an antenna assembly, comprising: a circuit substrate and an antenna;

[0006] The antenna comprises an antenna radiator and an antenna feeding point and an antenna feeding point arranged on both sides of the antenna radiator, wherein the antenna feeding point and the antenna feeding point are both electrically connected to the circuit substrate;

[0007] Wherein, the resonant wavelength of the antenna radiator is positively correlated with the circumference of the antenna radiator.

[0008] In some optional embodiments, the circumference of the antenna radiator is one third of the resonant wavelength of the antenna radiator.

[0009] In some optional embodiments, the length of the antenna radiator is 33 mm, and the width of the antenna radiator is 7 mm.

[0010] In some optional embodiments, the resonant frequency of the antenna radiator is 433 MHz.

[0011] In some optional embodiments, the antenna radiator is a copper antenna radiator, an LDS antenna radiator, or a PDS antenna radiator.

[0012] In some optional embodiments, the antenna also includes two connecting plates, which are respectively arranged on both sides of the antenna radiator, and the antenna feeding point and the antenna feeding point are correspondingly arranged at one end of the two connecting plates away from the antenna radiator, and the connecting plates are electrically connected to the circuit substrate so that the antenna feeding point and the antenna feeding point are electrically connected to the circuit substrate.

[0013] In some optional embodiments, two soldering pads are provided on the circuit substrate, and the connecting plate is welded integrally with the corresponding soldering pads.

[0014] In some optional implementations, an avoidance gap is formed between the antenna radiator and the circuit substrate.

[0015] In some optional embodiments, the circuit substrate has a receiving side for placing electronic components, the connecting board is connected to the receiving side of the circuit substrate, and the antenna radiator is located on the receiving side of the circuit substrate.

[0016] Compared with the prior art, the antenna assembly of the utility model can directly set the antenna on the circuit substrate of the communication terminal, so that it is built into the terminal together with the circuit substrate and does not occupy the external space of the terminal. The overall size of the antenna is small and it is not easy to occupy the internal space of the terminal, which makes the design of the internal space of the terminal simpler and can adapt to thin and light devices, reducing costs and improving product competitiveness.

[0017] Another embodiment of the present invention provides a communication terminal, including: an antenna assembly as described above.

[0018] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of an antenna assembly according to an embodiment of the utility model;

[0020] Figure 2 An exploded view of an antenna assembly according to an embodiment of the present utility model;

[0021] Figure 3 The figure is a schematic structural diagram of an antenna radiator according to an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 10. Circuit substrate; 11. Solder pad; 20. Antenna; 21. Antenna radiator; 22. Antenna feeding point; 23. Antenna feeding point; 24. Connecting plate. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In the description of the utility model, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present invention, the description with reference to the terms "one embodiment", "some optional implementations" or "some optional embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0028] See also Figure 1 An embodiment of the utility model provides an antenna assembly, including: a circuit substrate 10 and an antenna 20.

[0029] The antenna 20 includes an antenna 20 radiator and an antenna 20 feeding point and an antenna 20 feeding ground point arranged on both sides of the antenna 20 radiator, and the antenna 20 feeding point and the antenna 20 feeding ground point are electrically connected to the circuit substrate 10. Since the antenna 20 can be directly arranged on the circuit substrate 10 of the communication terminal, it is built into the terminal together with the circuit substrate 10 and does not occupy the external space of the terminal. The small overall volume of the antenna 20 makes it difficult for the antenna 20 to occupy additional internal space of the terminal, making the design of the internal space of the terminal simpler, and can be adapted to thin and light devices, reducing costs and improving product competitiveness. The resonant wavelength of the antenna 20 radiator is positively correlated with the circumference of the antenna 20 radiator, so that the resonant frequency is easy to control and adjustment and optimization are relatively convenient.

[0030] In some optional embodiments, the circumference of the antenna 20 radiator is approximately one-third of the resonant wavelength of the antenna 20 radiator, and the size of the antenna 20 radiator is easy to control, thereby facilitating the control of the resonant frequency of the antenna 20 radiator, and optimizing and adjusting the circumference of the antenna 20 radiator is d=wl.

[0031] In this embodiment, the length l of the radiator of antenna 20 is 33 mm, the width w of the radiator of antenna 20 is 7 mm, d is 231 mm, the resonant frequency of the radiator of antenna 20 is 433 MHz, and the wave speed c of the electromagnetic wave emitted by the radiator of antenna 20 is approximately 3x108 m / s. Based on c=λf, λ=(3x108 m / s)÷(433x106HZ)≈693=3d.

[0032] The specific preparation material of the antenna 20 radiator can be designed according to actual needs. For example, in some optional embodiments, the antenna 20 radiator is a copper antenna 20 radiator, an LDS antenna 20 radiator, or a PDS antenna 20 radiator.

[0033] In order to facilitate the connection between the antenna 20 and the circuit substrate 10, in some optional embodiments, the antenna 20 also includes two connecting plates 24, which are respectively arranged on both sides of the antenna 20 radiator, and the antenna 20 feeding point and the antenna 20 feeding point are correspondingly arranged at one end of the two connecting plates 24 away from the antenna 20 radiator, and the connecting plates 24 are electrically connected to the circuit substrate 10, so that the antenna 20 feeding point and the antenna 20 feeding point are electrically connected to the circuit substrate 10.

[0034] In some optional embodiments, two soldering pads 11 are provided on the circuit substrate 10, and the connecting plate 24 is welded integrally with the corresponding soldering pads 11, thereby facilitating the installation of the connecting plate 24 and improving the structural stability.

[0035] In some optional implementations, an avoidance gap is formed between the radiator of the antenna 20 and the circuit substrate 10 , so that the radiator of the antenna 20 can resonate without being easily affected by the circuit substrate 10 .

[0036] In some optional embodiments, the circuit substrate 10 has a receiving side for placing electronic devices, the connecting plate 24 is connected to the receiving side of the circuit substrate 10, and the radiator of the antenna 20 is located on the receiving side of the circuit substrate 10. Since the radiator of the antenna 20 and the connecting plate 24 are arranged on the receiving side of the circuit substrate 10 together with the electronic devices, and since the interior of the communication terminal itself also needs to be reasonably arranged for the receiving space of the electronic devices, the antenna 20 is also arranged on the receiving side, which is conducive to simplifying the design of the internal space of the communication terminal. It should be noted that the circuit substrate 10 shown in the legend is only a partial structure of the circuit substrate 10, and other parts of the circuit board and the electronic devices are not shown.

[0037] The above antenna assembly can be applied to a communication terminal, and the communication terminal includes: an antenna assembly as described above.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antenna assembly, characterized in that: include: Circuit board and antenna; The antenna comprises an antenna radiator and an antenna feeding point and an antenna feeding point arranged on both sides of the antenna radiator, wherein the antenna feeding point and the antenna feeding point are both electrically connected to the circuit substrate; Wherein, the resonant wavelength of the antenna radiator is positively correlated with the circumference of the antenna radiator.

2. The antenna assembly according to claim 1, characterized in that: The circumference of the antenna radiator is one third of the resonant wavelength of the antenna radiator.

3. The antenna assembly according to claim 1, characterized in that: The length of the antenna radiator is 33 mm, and the width of the antenna radiator is 7 mm.

4. The antenna assembly according to claim 1, characterized in that: The resonant frequency of the antenna radiator is 433 MHz.

5. The antenna assembly according to claim 1, characterized in that: The antenna radiator is a copper antenna radiator, an LDS antenna radiator or a PDS antenna radiator.

6. The antenna assembly according to any one of claims 1 to 5, characterized in that: The antenna also includes two connecting plates, which are respectively arranged on both sides of the antenna radiator. The antenna feeding point and the antenna feeding point are correspondingly arranged at one end of the two connecting plates away from the antenna radiator. The connecting plates are electrically connected to the circuit substrate so that the antenna feeding point and the antenna feeding point are electrically connected to the circuit substrate.

7. The antenna assembly according to claim 6, characterized in that: The circuit substrate is provided with two soldering pads, and the connecting plate is correspondingly soldered to the soldering pads.

8. The antenna assembly according to claim 6, characterized in that: An avoidance gap is formed between the antenna radiator and the circuit substrate.

9. The antenna assembly according to claim 6, characterized in that: The circuit substrate has a receiving side for placing electronic components, the connection board is connected to the receiving side of the circuit substrate, and the antenna radiator is located on the receiving side of the circuit substrate.

10. A communication terminal, characterized in that: include: An antenna assembly as claimed in any one of claims 1 to 9.

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