Antenna device and electronic device thereof

Abstract

The present application provides an antenna device and an electronic device thereof; the antenna device includes: a first metal radiator and a second metal radiator which are arranged at intervals, and a first feeder, the first feeder is electrically connected to the first metal radiator, the first feeder is used to feed a radio frequency signal into the first metal radiator, and the first metal radiator is used to couple with the second metal radiator, and then radiate a wireless signal through the first metal radiator and the second metal radiator. The antenna device provided by the embodiment of the present application, through the action on the metal radiator near the antenna, does not directly expand the bandwidth in the form of adding devices (such as switches or inductors and capacitors, etc.), avoids the loss brought by the devices, and saves costs at the same time. And it reasonably utilizes the surrounding environment to achieve spatial multiplexing, without increasing the antenna body area to increase the radiation area, thereby greatly reducing the layout area occupied by the antenna and greatly improving the bandwidth of the radio frequency signal of the antenna.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna structures for electronic devices, and more particularly to an antenna device and an electronic device thereof. Background Art

[0002] At present, the development of 5G technology is very rapid. The frequency bands required by communication devices such as mobile phones are increasing day by day, and higher-frequency bands are being applied to communication, resulting in a significant increase in the number of antennas. Moreover, communication devices such as mobile phones have higher and higher requirements for functions such as multi-cameras and high-quality sound, and the requirements for ID are also becoming more and more extreme, resulting in further squeezing of the internal antenna space of mobile phones, and the antenna clearance and height environment becoming more and more severe. The test of antenna design in communication devices such as mobile phones is becoming increasingly severe.

[0003] Currently, the space of mobile phones is getting smaller and the number of antennas is increasing, resulting in a limited area allocated to each antenna. To make the resonance of the antenna deeper and the frequency band wider, only devices (switches or inductors and capacitors) can be added for tuning. However, adding devices for tuning will increase the loss and cost caused by the devices. Therefore, the problem of expanding the bandwidth and optimizing S11 without adding devices has always been a difficult point that needs to be overcome at present. Summary of the Invention

[0004] In a first aspect of the embodiments of the present application, an antenna device is provided. The antenna device includes:

[0005] A first metal radiator and a second metal radiator arranged at intervals; and

[0006] A first feeder, electrically connected to the first metal radiator, for feeding a radio frequency signal into the first metal radiator, and the first metal radiator is used for coupling with the second metal radiator, and then radiating radio signals through the first metal radiator and the second metal radiator.

[0007] In a second aspect, an electronic device is provided in the embodiments of the present application. The electronic device includes a display screen, a housing, a control circuit board, and the antenna device according to any one of the above embodiments; the display screen and the housing cooperate to form an accommodation space, and the control circuit board is arranged in the accommodation space and electrically connected to the antenna device.

[0008] The antenna device provided in the embodiments of the present application expands the bandwidth by acting on the metal radiator near the antenna, without directly adding devices (such as switches or inductors and capacitors), avoiding the loss caused by the devices, and saving costs at the same time. And it reasonably utilizes the surrounding environment to achieve space multiplexing, without increasing the area of the antenna body (the first metal radiator) to increase the radiation area, thereby greatly reducing the layout area occupied by the antenna and greatly improving the bandwidth of the antenna radio frequency signal. Brief Description of the Drawings

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 is a partial structural perspective view of an embodiment of the electronic device of the present application;

[0011] Figure 2 is a partial structural perspective view of another embodiment of the electronic device of the present application;

[0012] Figure 3 is a comparison diagram of the S11 performance of the antenna device with a metal ring (second metal radiator) in the technical solution of the present application and the conventional technical solution without a metal ring (second metal radiator);

[0013] Figure 4 is a comparison diagram of the radiation efficiency of the antenna device with a metal ring (second metal radiator) in the technical solution of the present application and the conventional technical solution without a metal ring (second metal radiator);

[0014] Figure 5 is a rear view structural diagram of an embodiment of the electronic device of the present application;

[0015] Figure 6 is a partial structural perspective view of another embodiment of the electronic device of the present application;

[0016] Figure 7 is a partial structural perspective view of another embodiment of the electronic device of the present application;

[0017] Figure 8 is a structural perspective view of another embodiment of the electronic device of the present application;

[0018] Figure 9 is Figure 8 a partially enlarged structural view of the antenna device in the embodiment;

[0019] Figure 10 is Figure 5 a sectional view of the structure of the electronic device at A-A in the embodiment;

[0020] Figure 11 is a schematic diagram of the structural composition block diagram of an embodiment of the electronic device of the present application. Detailed Embodiments

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0022] As used herein, the phrase "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0023] As used herein, an "electronic device" (or simply referred to as a "terminal") includes, but is not limited to, a device configured to receive / transmit communication signals via a wired connection (such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection, and / or another data connection / network) and / or via a wireless interface (such as for a cellular network, Wireless Local Area Network (WLAN), digital television network such as DVB-H network, satellite network, AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that can combine cellular radiotelephone with data processing, facsimile, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices including radiotelephone transceivers. A mobile phone is an electronic device configured with a cellular communication module.

[0024] Please refer to Figure 1 , Figure 1It is a partial structural perspective schematic diagram of an embodiment of the electronic device of the present application. It should be noted that the electronic device in the present application may include electronic devices with antenna devices such as mobile phones, tablet computers, laptop computers, wearable devices, etc. The electronic device includes but is not limited to a housing 100 and an antenna device 200. It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products, or devices.

[0025] Specifically, the antenna device 200 includes a first metal radiator 210, a second metal radiator 220, and a first feeder 230 that are spaced apart. The first feeder 230 is electrically connected to the first metal radiator 210. The first feeder 210 is used to feed a radio frequency signal into the first metal radiator 210. The first metal radiator 210 is used to couple with the second metal radiator 220, and then radiate wireless signals through the first metal radiator 210 and the second metal radiator 220. In addition, the first metal radiator 210 is also connected to the GND point 240. The second metal radiator 220 in this embodiment may be in a passive state and wirelessly coupled with the first metal radiator 210. Thereby broadening the bandwidth of the first metal radiator 210, such as the bandwidth in the frequency range of 2400M - 2700M.

[0026] Optionally, the first metal radiator 210 may be an inverted F (IFA) type FPC antenna structure. The inverted F (IFA) type FPC antenna structure is within the understanding of those skilled in the art and will not be elaborated here. Among them, the second metal radiator 220 may be a metal sheet placed in the gap between the components inside the electronic device, or a metal exterior decorative part placed outside the housing 100.

[0027] Please refer to Figure 2 , Figure 2 It is a partial structural perspective schematic diagram of another embodiment of the electronic device of the present application. Different from the previous embodiment, the second metal radiator 220 in this embodiment is in a ring structure. In addition, in some other embodiments, the second metal radiator 220 is not limited to Figure 1 and Figure 2 the shapes in, and may also be non-closed shapes such as polygons, ellipses, or L-shaped, etc., which will not be specifically limited here.

[0028] Take Figure 2Taking the structure of the middle antenna device as an example for illustration, in this embodiment, the proposed design scheme makes full use of the structure of the suspended metal ring (the second metal radiator 220, hereinafter referred to as the suspended metal ring), uses the suspended metal ring as a radiating antenna, and together with the first metal radiator 210, expands the efficiency bandwidth of the antenna. The suspended metal ring is close to the first metal radiator 210, and by performing loading coupling with the first metal radiator 210, it excites the resonance of the metal ring body, thereby generating double resonance. This scheme can make the efficiency bandwidth of the antenna cover 2400M - 2700M. It should be noted that the terms "first", "second", and "third" in the embodiments of the present application are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] Please refer to Figure 3 and Figure 4 , Figure 3 which is a comparison diagram of the S11 performance of the antenna device with the conventional technical solution without a metal ring (the second metal radiator) and the antenna device with a metal ring (the second metal radiator) of the technical solution of the present application. Figure 4 which is a comparison diagram of the radiation efficiency of the antenna device with the conventional technical solution without a metal ring (the second metal radiator) and the antenna device with a metal ring (the second metal radiator) of the technical solution of the present application. It can be clearly seen from the comparison diagram that adding a metal ring generates an additional resonance and capacitively loads the original resonance to make the initial resonance deeper ( Figure 3 the S11 performance in Figure 4 ), and the efficiency at 2.7G can be increased by about 3dB in Figure 4 . This scheme mainly includes two parts: an FPC antenna (the first metal radiator 210) and a suspended metal ring antenna (the second metal radiator 220). The suspended metal ring excites the resonance of its own body through coupling loading with the FPC antenna. The resonance frequency of the suspended metal ring antenna is mainly related to the dielectric constant and the wavelength. Therefore, the length of the wavelength can be adjusted by the material and the structural shape to make the wavelength resonate in the desired frequency band range.

[0030] The technical solution in this embodiment uses the mutual loading and mutual coupling of the FPC antenna (the first metal radiator 210) and the suspended metal ring (the second metal radiator) to deepen the resonance and generate double resonance at the same time, thereby expanding the antenna bandwidth and improving the efficiency. Due to the effective use of the suspended metal around the antenna for coupling, the surrounding environment is reasonably utilized to expand the antenna bandwidth. This scheme effectively improves the space utilization rate of the mobile phone and saves the device cost.

[0031] Optionally, the second metal radiator 220 in this embodiment may be a metal sheet (or metal ring) placed in the gap between the components stacked inside the electronic device, or a metal exterior decorative part placed outside the housing 100. Please refer to Figure 5 , Figure 5 which is a schematic diagram of the back structure of an embodiment of the electronic device of this application. In this embodiment, a mobile phone is taken as an example for illustration. The second metal radiator 220 may be a camera decorative part of the mobile phone. Of course, in some other embodiments, the second metal radiator 220 may also be a metal exterior decorative part at other positions. Regarding the structural features of this part, within the understanding of those skilled in the art, they will not be enumerated and described in detail one by one here.

[0032] The antenna device provided by the embodiment of this application, through the action on the metal radiator near the antenna, does not directly expand the bandwidth by adding components (such as switches or inductors and capacitors), avoiding the losses brought by the components and saving costs at the same time. And it reasonably utilizes the surrounding environment to achieve spatial multiplexing, without the need to increase the area of the antenna body (the first metal radiator) to increase the radiation area, thereby greatly reducing the layout area occupied by the antenna and greatly improving the bandwidth of the antenna radio frequency signal.

[0033] Please refer to Figure 6 and Figure 7 , Figure 6 which is a partial structural perspective view of another embodiment of the electronic device of this application, Figure 7 which is a partial structural perspective view of still another embodiment of the electronic device of this application; Figure 6 and Figure 7The electronic device in the embodiment also includes a housing 100 and an antenna device 200. The antenna device 200 includes a first metal radiator 210, a second metal radiator 220, and a first feeder 230 that are arranged at intervals. The first feeder 230 is electrically connected to the first metal radiator 210. The first feeder 210 is configured to feed a radio frequency signal into the first metal radiator 210. The first metal radiator 210 is configured to couple with the second metal radiator 220, and then radiate a wireless signal through the first metal radiator 210 and the second metal radiator 220. In addition, the first metal radiator 210 is also connected to a GND point 240. Different from the foregoing embodiment, the antenna device 200 in this embodiment further includes a second feeder 250 and a second ground point 260. The second feeder 250 and the second ground point 260 are respectively electrically connected to the second metal radiator 220. The second feeder 250 is configured to feed a radio frequency signal into the second metal radiator (the radio frequency signal fed by the second feeder 250 into the second metal radiator 220 may be the same signal as the radio frequency signal fed by the first feeder 230 into the first metal radiator 210), and then cooperate with the first metal radiator 210 to expand the bandwidth in a frequency range such as 2400M - 2700M. That is, the first metal radiator 210 and the second metal radiator 220 in this embodiment are both active antennas. Among them, the first metal radiator 210 may also be an inverted-F (IFA) type FPC antenna structure. Regarding the inverted-F (IFA) type FPC antenna structure, it is within the understanding of those skilled in the art, and will not be elaborated here. It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] Please refer to Figure 8 , Figure 8 FIG. is a schematic perspective view of the structure of still another embodiment of the electronic device of the present application. The electronic device in this embodiment also includes a housing 100 and an antenna device 200. The antenna device 200 includes a first metal radiator 210, a second metal radiator 220, and a first feeder 230 that are arranged at intervals. The first feeder 230 is electrically connected to the first metal radiator 210. The first feeder 210 is configured to feed a radio frequency signal into the first metal radiator 210. The first metal radiator 210 is configured to couple with the second metal radiator 220, and then radiate a wireless signal through the first metal radiator 210 and the second metal radiator 220. In addition, the first metal radiator 210 is also connected to a GND point 240.

[0035] Optionally, the second metal radiator 220 in this embodiment is a ring structure, and the ring diameter of the second metal radiator 220 of the ring structure is adjustable. Specifically, please refer to Figure 9 , Figure 9 is Figure 8 a schematic enlarged view of a partial structure of the antenna device in the embodiment. The antenna device 200 in this embodiment further includes a wireless induction component 270, and the wireless induction component 270 is used to perform wireless induction with the second metal radiator 220, so as to control the ring diameter of the second metal radiator 220. Among them, the wireless induction component 270 can be arranged in the middle of the second metal radiator 220, the wireless induction component 270 can be an electromagnet, and the material of the second metal radiator 220 is a magnetic material, such as stainless steel, alloys containing magnetic materials such as iron, cobalt, and nickel, etc. The second metal radiator 220 has an elastic telescopic structure, and specifically can be a ring formed by a spiral structure (in other words, the second metal radiator 220 in this embodiment can be a ring structure formed by bending a spring). Under the action of the wireless induction component 270 located in the middle, it can contract inward and expand outward along the Figure 9 dashed arrow direction in

[0036] to realize the controllable adjustment of the ring diameter size of the second metal radiator 220. By changing the ring diameter size of the second metal radiator 220, the purpose of controllably adjusting the resonance frequency is achieved, and further the bandwidth of the antenna radio frequency signal is improved.

[0037] In addition, please refer to Figure 5 and Figure 10 , Figure 10 is Figure 5Schematic cross-sectional view of the structure of the electronic device at A-A in the embodiment. The electronic device in this embodiment may include a housing 100, an antenna device 200, a display module 300, and a control circuit board 400. Optionally, the display module 300 and the housing 100 in this embodiment cooperate to form an accommodation space 1000, the control circuit board 400 is disposed in the accommodation space 1000, and the control circuit board 400 is electrically connected to the display module 300 and the antenna device 200 and is used to control the working states of the display module 300 and the antenna device 200. For the detailed structure of the antenna device 200, please refer to the relevant description in the foregoing embodiment. In addition, the detailed technical features of the physical structures of other parts of the electronic device are within the understanding scope of those skilled in the art, and will not be elaborated herein.

[0038] Please refer to Figure 11 , Figure 11 is a schematic block diagram of the structural composition of an embodiment of the electronic device of the present application. The electronic device may be a mobile phone, a tablet computer, a notebook computer, a wearable device, etc. In this embodiment, the mobile phone is taken as an example. The structure of the electronic device may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the display module 300 in the foregoing embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980 (which may be the control circuit board 400 in the foregoing embodiment), and a power supply 990, etc. Among them, the RF circuit 910 (which may be the antenna device 200 in the foregoing embodiment), the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to supply electrical energy to the entire electronic device 10.

[0039] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, and specifically may include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes an infrared sensor, a laser sensor, etc., and is used to detect user proximity signals, distance signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 and are used to receive and send sound signals; the wifi module 970 is used to receive and transmit wifi signals, and the processor 980 is used to process the data information of the electronic device. For the specific structural features of the electronic device, please refer to the relevant description in the foregoing embodiment, and no detailed introduction will be made herein.

[0040] The electronic device provided by the embodiment of the present application, its antenna device acts on the gold radiator near the antenna, and does not directly expand the bandwidth by increasing components (such as switches or inductors and capacitors), avoiding the losses brought by the components and saving costs at the same time. And it reasonably utilizes the surrounding environment to achieve spatial multiplexing, without the need to increase the area of the antenna body (the first metal radiator) to increase the radiation area, thereby greatly reducing the layout area occupied by the antenna and greatly improving the bandwidth of the antenna radio frequency signal.

[0041] The above are only some embodiments of the present invention, and thus do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An antenna device, characterized in that, The antenna device includes: A first metal radiator and a second metal radiator which are arranged at intervals; and A first feeder, electrically connected to the first metal radiator, the first feeder being configured to feed a radio frequency signal into the first metal radiator, and the first metal radiator being configured to couple with the second metal radiator, and then radiate a wireless signal through the first metal radiator and the second metal radiator; The second metal radiator is a suspended ring structure; The ring diameter of the ring-shaped second metal radiator is adjustable; the antenna device further includes a wireless induction component, the wireless induction component being configured to perform wireless induction with the second metal radiator, and then control the ring diameter of the second metal radiator; the wireless induction component is an electromagnet, the material of the second metal radiator is a magnetic material, and the second metal radiator has an elastic telescopic structure.

2. The antenna device according to claim 1, wherein The second metal radiator is a ring formed by a spiral structure.

3. The antenna device according to claim 1, wherein The antenna device further includes a second feeder, the second feeder being electrically connected to the second metal radiator, and the second feeder being configured to feed a radio frequency signal into the second metal radiator.

4. The antenna device according to claim 1, wherein The second metal radiator is a metal appearance decoration of an electronic device.

5. The antenna device according to claim 1, characterized in that, The first metal radiator is an inverted-F antenna structure.

6. An electronic device, characterized in that, The electronic device includes a display screen, a housing, a control circuit board, and the antenna device according to any one of claims 1-5; the display screen and the housing cooperate to form an accommodation space, and the control circuit board is arranged in the accommodation space and electrically connected to the antenna device.

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