An antenna equipment

Abstract

The present disclosure discloses an antenna device comprising: a main circuit board, a first-type antenna, and a second-type antenna; wherein the first-type antenna is ground-coupled to the main circuit board, and the first-type antenna has a ground structure; the second-type antenna is ground-coupled to the main circuit board, and the second-type antenna is spaced relatively apart from the above-mentioned first-type antenna, wherein an operating bandwidth of the second-type antenna is greater than an operating bandwidth of the first-type antenna. The disclosed antenna device can increase the coverage of its low band without reducing the coverage of the high frequency band of the antenna, thereby improving the performance of the antenna device entirely.

Description

[Technical Field]

[0001] This disclosure relates to the field of communication technology, and in particular to an antenna device. [Previous Technology]

[0002] Mobile communication is moving from connecting people to connecting people and things, and things to things. The Internet of Things is an inevitable trend. However, the current network is insufficient in connecting things. In fact, compared with short-range communication technologies such as Bluetooth and ZigBee, mobile cellular networks have the characteristics of wide coverage, mobility and large number of connections, which can bring richer application scenarios and should become the main connection technology of the Internet of Things.

[0003] In recent years, with the rapid development of the Internet of Things (IoT), IoT communication technology has also greatly improved. NB-IoT (Narrow Band Internet of Things) is a prominent new IoT technology that supports low-power devices for cellular data connections over wide-area networks, also known as Low Power Wide Area Network (LPWAN). NB-IoT supports efficient connections for devices with long standby times and high network connectivity requirements. It also provides very comprehensive indoor cellular data connection coverage.

[0004] In terms of antenna structure design, IoT products differ significantly from traditional mobile terminals such as smartphones. The technology is not as mature as that of smartphones, so existing IoT products often lack pre-designed antenna areas, resulting in a relatively complex and irregular antenna environment. Furthermore, the varying sizes of terminal devices, many of which are very small, greatly increase the difficulty of antenna design. Against this backdrop, miniaturizing antennas in terminal devices has become a current technical challenge.

[0005] Existing small and compact IoT devices have poor low-frequency performance due to their compact structure and miniaturized antennas and circuit boards.

[0006] For example, IoT devices typically need to support LTE, LPWAN, and 5G standards operating at frequencies as low as 600MHz. This requires antennas for IoT devices to be approximately half the operating wavelength, which is relatively large compared to the size of most IoT devices. Existing IoT devices using traditional antenna designs cannot achieve good antenna performance at frequency bandwidths below 960MHz. Therefore, existing IoT devices can only achieve better antenna performance by increasing their size. [Summary of the Invention]

[0007] The purpose of this disclosure is to address at least one aspect of the aforementioned problems and defects existing in the prior art.

[0008] In view of the above problems, this disclosure proposes an antenna device, which includes: a main circuit board; a first type antenna, grounded and coupled to the main circuit board, wherein the first type antenna has a grounding structure; and a second type antenna, grounded and coupled to the main circuit board, wherein the second type antenna is arranged at a distance from the first type antenna, and the operating bandwidth of the second type antenna is greater than that of the first type antenna.

[0009] According to an exemplary embodiment of the present invention, the grounding structure of the first type of antenna is grounded and coupled to a first side of the main circuit board; and the second type of antenna is grounded and coupled to a second side of the main circuit board opposite to the first side.

[0010] According to an exemplary embodiment of the present invention, the first type of antenna is a planar inverted F antenna.

[0011] According to an exemplary embodiment of the present invention, the second type of antenna is a monopole antenna.

[0012] According to an exemplary embodiment of the present invention, the grounding coupling of the first type of antenna to the main circuit board is in the form of welding, conductive adhesive, spring contact finger and spring pin.

[0013] According to an exemplary embodiment of the present invention, the grounding coupling of the second type antenna to the main circuit board is achieved by one of the following methods: soldering, conductive adhesive, spring contact finger, and spring pin.

[0014] According to an exemplary embodiment of the present invention, the first type of antenna is made of one of the following: PCB antenna, FPC antenna, LDS antenna or metal stamping antenna; the second type of antenna is made of one of the following: PCB antenna, FPC antenna, LDS antenna or metal stamping antenna.

[0015] In the foregoing exemplary embodiments of this disclosure, compared with existing antenna devices, the coverage range of the low frequency band can be increased without reducing the coverage range of the high frequency band of the antenna, thereby improving the overall performance of the antenna device.

Implementation Method

[0019] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0020] The terms “comprising,” “including,” and similar terms as used herein should be understood as open-ended terms, meaning “including / including but not limited to,” implying that other content may also be included. The term “based on” means “at least partially based on.” The term “one embodiment” means “at least one embodiment”; the term “another embodiment” means “at least one additional embodiment,” and so on.

[0021] This invention mainly addresses the following technical issues: how to extend the low-frequency band of antenna devices used in the Internet of Things and the corresponding antenna efficiency.

[0022] To solve the above problems, the present invention discloses an antenna device, comprising: a main circuit board, a first type antenna, and a second type antenna. The first type antenna is grounded and coupled to the main circuit board, and the second type antenna is grounded and coupled to the main circuit board, with the second type antenna and the first type antenna spaced apart. Specifically, the first type antenna has a grounding structure, and the bandwidth of the second type antenna is greater than that of the first type antenna.

[0023] As shown in Figures 1 and 2, the antenna device disclosed in this embodiment includes a main circuit board 10, a first type antenna 20, and a second type antenna 30. The first type antenna 20 and the second type antenna 30 are grounded and coupled to the main circuit board 10 at a relative interval.

[0024] In this embodiment, the first type antenna 20 is preferably grounded and coupled to the first side of the main circuit board 10, and the second type antenna 30 is grounded and coupled to the second side of the main circuit board 10 opposite to the first side.

[0025] In this embodiment, the main circuit board 10 is configured to control the normal operation of the first type antenna 20 and the second type antenna 30.

[0026] As shown in Figure 2, the first type antenna 20 has a grounding structure 21. In practical applications, the first type antenna 20 is grounded and coupled to the first side of the main circuit board 10 via the grounding structure 21. In practical applications, the first type antenna 20 is preferably a planar inverted F-type antenna (hereinafter referred to as PIFA antenna).

[0027] In this embodiment, the grounding structure 21 of the PIFA antenna 20 and the grounding coupling of the main circuit board 10 can be any of the following forms: welding, conductive glue, spring contact finger, and spring pin.

[0028] In this embodiment, the PIFA antenna 20 can achieve bandwidth efficiency control of 800-900MHz.

[0029] As shown in Figures 1 and 2, the second type antenna 30 is also coupled to the second side of the main circuit board 10 via a corresponding grounding component 31. The operating bandwidth of the second type antenna 30 is greater than that of the first type antenna 20. In practical applications, the second type antenna 30 is preferably a monopole antenna.

[0030] In this embodiment, the grounding coupling between the monopole antenna 30 and the main circuit board can be achieved by any of the following methods: welding, conductive adhesive, spring contact finger, and spring pin.

[0031] In this embodiment, the monopole antenna 30 can achieve bandwidth efficiency control of around 700MHz. Specifically, the disclosed antenna device as a whole can improve bandwidth performance in the low-frequency band from 698MHz to 960MHz.

[0032] In actual design, the size of the antenna device can be designed as, for example, 50 mm × 15 mm × 0.2 mm or 65 mm × 12 mm × 0.2 mm.

[0033] That is to say, the antenna device disclosed in this invention can be miniaturized and compacted, while achieving its effective antenna efficiency (e.g., effective antenna efficiency of 20% or more) in a bandwidth of less than 960MHz (e.g., 698MHz-960MHz).

[0034] In addition, the PIFA antenna 20 in the disclosed antenna device can be made of one of the following: PCB antenna, flexible printed circuit (FPC) antenna, laser-direct-structuring (LDS) antenna or metal stamping antenna; the monopole antenna 30 of the antenna device can be made of one of the following: PCB antenna, FPC antenna, LDS antenna or metal stamping antenna.

[0035] The antenna device disclosed in this invention physically separates two antennas and places them on both sides of a main circuit board, and grounded to the main circuit board in the same direction. This design enables the generation of desired bandwidth and efficiency without sacrificing the size of the IoT device.

[0036] The above description is merely an optional embodiment of the present disclosure and is not intended to limit the embodiments of the present disclosure. For those skilled in the art, the embodiments of the present disclosure can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the present disclosure should be included within the protection scope of the embodiments of the present disclosure.

[0037] Although embodiments of the present disclosure have been described with reference to several specific examples, it should be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the appended claims is to be interpreted in the broadest sense, thereby encompassing all such modifications and equivalent structures and functions. [Simplified Explanation of the Diagram]

[0016] The features, advantages, and other aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description, in which several embodiments of the disclosure are shown by way of example and not limitation, in the drawings:

[0017] Figure 1 is one of the perspective views of an antenna device according to the present disclosure; and

[0018] Figure 2 is a second perspective view of the antenna device according to the present disclosure.

Claims

1. An antenna device, the antenna device comprising: Main circuit board; A first type of antenna is grounded and coupled to the main circuit board, wherein the first type of antenna has a grounding structure; and a second type of antenna is grounded and coupled to the main circuit board, wherein the second type of antenna is spaced apart from the first type of antenna, and the operating bandwidth of the second type of antenna is greater than that of the first type of antenna.

2. The antenna device as claimed in claim 1, wherein, The grounding structure of the first type of antenna is grounded and coupled to the first side of the main circuit board; The second type of antenna is grounded and coupled to the second side of the main circuit board, which is opposite to the first side.

3. The antenna device as claimed in claim 1, wherein, The first type of antenna is a planar inverted-F antenna.

4. The antenna device as claimed in claim 1, wherein, The second type of antenna is a monopole antenna.

5. The antenna device as claimed in claim 1, wherein, The grounding coupling between the first type of antenna and the main circuit board is achieved through one of the following methods: welding, conductive adhesive, spring contact finger, and spring pin.

6. The antenna device as claimed in claim 1, wherein, The second type of antenna is grounded by one of the following methods: soldering, conductive adhesive, spring contact finger, and spring pin.

7. The antenna device as claimed in claim 1, wherein, The first type of antenna is made of one of the following: PCB antenna, FPC antenna, LDS antenna, or metal stamping antenna; the second type of antenna is made of one of the following: PCB antenna, FPC antenna, LDS antenna, or metal stamping antenna.

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