CN117594978A

CN117594978A - Antenna device and electronic apparatus

Info

Publication number: CN117594978A
Application number: CN202311711114.2A
Authority: CN
Inventors: 文思超
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2023-12-12
Filing date: 2023-12-12
Publication date: 2024-02-23

Abstract

The application relates to an antenna device and electronic equipment, a first radiation unit comprises a first support arm, a second support arm and a metal piece, wherein a gap is formed between the first support arm and the second support arm, the metal piece is respectively connected with the first support arm and the second support arm, an opening communicated with the gap is formed in one side, far away from the gap, of the metal piece, and the first radiation unit is used for supporting a first frequency band; the second radiation unit is used for supporting a second frequency band, and the first frequency band and the second frequency band are at least partially overlapped; the opening and the gap are used for supporting the target resonance frequency band, so that the feed current of the target resonance frequency band is transmitted around the opening and the gap, the feed path of the feed current on the first radiation unit is increased, the path loss is increased, and the isolation degree of the first radiation unit and the second radiation unit in the same frequency band is improved. The target resonance frequency band is a frequency band in which the first frequency band and the second frequency band coincide.

Description

Antenna device and electronic apparatus

Technical Field

The present disclosure relates to the field of radio frequency technologies, and in particular, to an antenna apparatus and an electronic device.

Background

Along with the development of communication technology, the requirement of multi-band communication is more and more urgent, multi-band communication is realized through multi-antenna arrangement at present, and when the multi-antenna arrangement under a small headroom area, the problem of inter-antenna interference often occurs, and the communication performance is affected.

Disclosure of Invention

In view of this, it is necessary to provide an antenna device and an electronic apparatus capable of effectively improving isolation between antennas.

In a first aspect, an antenna device is provided, comprising:

the first radiation unit comprises a first support arm, a second support arm and a metal piece, a gap is formed between the first support arm and the second support arm, the metal piece is respectively connected with the first support arm and the second support arm, an opening communicated with the gap is formed in one side, far away from the gap, of the metal piece, and the first radiation unit is used for supporting a first frequency band;

the second radiation unit is used for supporting a second frequency band, and the first frequency band and the second frequency band are at least partially overlapped;

the openings and the gaps are used for supporting the target resonant frequency band, so that feed current of the target resonant frequency band is transmitted around the openings and the gaps, and the target resonant frequency band is a frequency band where the first frequency band and the second frequency band coincide.

In a second aspect, an electronic device is provided comprising an antenna arrangement as described above.

According to the antenna device and the electronic equipment, the metal piece is used as the radiation branch of the first radiation unit, the opening on the metal piece is further utilized, and the equivalent LC parallel circuit is formed by the opening on the metal piece and the gap between the first support arm and the second support arm so as to support resonance of a target resonance frequency band (the frequency band jointly supported by the first radiation unit and the second radiation unit), so that current of the target resonance frequency band is transmitted around the opening and the gap, a feed path of feed current on the first radiation unit is increased, path loss is increased, and isolation of the first radiation unit and the second radiation unit under the same frequency band is improved.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of an antenna device according to an embodiment;

fig. 2 is a second schematic structural diagram of an antenna device according to an embodiment;

fig. 3 is a third schematic structural diagram of an antenna device according to an embodiment;

fig. 4 is a schematic diagram of a current distribution of a first radiating element under a first feeding current excitation in an antenna device according to an embodiment;

fig. 5 is a radiation pattern of an antenna device according to an embodiment in a wifi2.4g band;

FIG. 6 is a schematic diagram of S-parameter curves of a first radiator and a second radiator and a schematic diagram of isolation between the first radiator and the second radiator according to an embodiment;

FIG. 7 is a schematic diagram of an electronic device in a landscape hand-held scenario according to an embodiment;

FIG. 8 is a graph of the overall efficiency of an electronic device in a cross-screen handheld scenario and free space, and in two scenarios in the conventional art, according to an embodiment;

fig. 9a is a schematic diagram of SAR results of an electronic device in a WiFi2.4G frequency band in the conventional technology;

fig. 9b is a schematic diagram of SAR results of an electronic device according to an embodiment in a WiFi2.4G frequency band;

FIG. 10a is a schematic diagram of SAR results of an electronic device in the N78 band in the prior art;

FIG. 10b is a schematic diagram of SAR results of an electronic device in the N78 band according to an embodiment;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

It is understood that "at least one" means one or more and "a plurality" means two or more. "at least part of an element" means part or all of the element.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

The antenna apparatus according to the embodiments of the present application may be applied to an electronic device, which may be an electronic device with a wireless communication function, and the electronic device may be a handheld device, an in-vehicle device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and various types of User Equipment (UE) (e.g., a Mobile Station, MS), and so on. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

In one embodiment, there is provided an antenna apparatus, as shown in fig. 1, including: a first radiating element 10, a second radiating element 20.

The first radiating element 10 includes a first support arm 102, a second support arm 104, and a metal member 106, a gap1 is formed between the first support arm 102 and the second support arm 104, the metal member 106 is respectively connected to the first support arm 102 and the second support arm 104, and an opening hole communicating with the gap1 is formed on a side of the metal member 106 away from the gap1, and the first radiating element 10 is used for supporting a first frequency band.

The first arm 102, the second arm 104 may be one of a flexible circuit board (Flexible Printed Circuit, FPC) antenna radiator, a laser direct structuring (Laser Direct Structuring, LDS) antenna radiator, a printed direct structuring (Print Direct Structuring, PDS) antenna radiator, a metal radiating branch. Wherein the area of the metal piece 106 may be required to provide the opening hole size. For example, the metal member 106 may be a metal plate of a camera of an electronic device, and the hole may be a hole for lighting of the camera.

The second radiating element 20 has a gap2 between the coupling ends of the second arm 104, and the second radiating element 20 is configured to support a second frequency band, where the first frequency band and the second frequency band at least partially overlap. The coupling end of the second arm 104 is an end far from the gap1, and is disposed adjacent to the second radiation unit 20 through the gap 2.

The first frequency band and the second frequency band may be communication frequency bands under various network systems, for example, communication frequency bands of 2G (Second Generation Mobile Communication Technology ), 3G (3 rd Generation Mobile Communication Technology, third generation mobile communication technology), 4G (Fourth Generation Mobile Communication Technology ), 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology), 6G (six Generation Mobile Communication Technology, sixth generation mobile communication technology), wiFi (Wireless Fidelity, wireless fidelity technology), GPS (Global Positioning System ), bluetooth, and the like.

When the frequency bands supported by the first radiating element 10 and the second radiating element 20 are overlapped, the feed current on the first radiating element 10 can be coupled into the second radiating element 20 through the gap2, and similarly, the feed current on the second radiating element 20 can be coupled into the first radiating element 10 through the gap 2. In the antenna device provided in this embodiment, the metal member 106 is used as a part of the radiating branch of the first radiating unit 10 to transmit the feeding current, and the opening hole on the metal member 106 is communicated with the gap1 between the first support arm 102 and the second support arm 104, the gap1 can be equivalent to a capacitor C, the open hole can be equivalent to an inductance L, the open hole and the gap1 which are communicated are equivalent to an LC parallel circuit which is used for supporting a target resonance frequency band, so that feed current of the target resonance frequency band is transmitted around the open hole and the gap1, and the target resonance frequency band is a frequency band where a first frequency band and a second frequency band are overlapped. The feed current based on the target resonant frequency band is transmitted around the periphery of the hole and the gap1 by the feed path on the first radiating element 10, so that the loss on the path is increased, and the isolation degree of the first radiating element 10 and the second radiating element 20 in the coincident frequency band can be improved.

In addition, when the feed current of the target resonant frequency band is transmitted on the first radiating element 10, the distribution area of the feed current is increased, so that the SAR is reduced, and the low SAR design is facilitated.

According to the antenna device provided in the embodiment of the present application, the first radiation unit 10 and the second radiation unit 20 are isolated by using the opening hole on the metal member 106 and adding the gap1, based on the characteristics of inductance and capacitance, it is known that the larger the perimeter of the opening hole is, the larger the equivalent inductance is, the smaller the width of the gap1 between the first support arm 102 and the second support arm 104 is, the larger the inductance is, the larger the capacitance is, the lower the supported frequency is, if the size of the hole is determined, the width of the gap1 between the first support arm 102 and the second support arm 104 can be determined based on the above association relationship and the target resonant frequency band to be supported, and similarly, if the width of the gap1 is fixed, the size of the hole can be further determined, and also the size of the hole and the width of the gap1 can be determined based on the branches of the target resonant frequency band. Based on the relation between the size of the open hole, the width of the gap1 and the resonance frequency band supported by the equivalent LC parallel circuit, the antenna device provided by the embodiment of the application can realize the same-frequency-band isolation of the first radiating unit 10 and the second radiating unit 20 under the small gap1, thereby being beneficial to realizing the miniaturization design.

In one embodiment, the sum of the effective length of the slot gap1 and the perimeter of the opening hole is less than half the wavelength of the target resonant frequency band, and the effective length is the path length of the feed current of the target resonant frequency band transmitted around the slot gap 1.

If the equivalent LC parallel circuit of the gap1 and the open hole is to support the target resonant frequency band, the equivalent electrical length of the equivalent LC parallel circuit is required to be less than half the wavelength of the target resonant frequency band, for example, the equivalent LC parallel circuit may be a quarter of the wavelength of the target resonant frequency band to support a resonant mode of 1/4 wavelength. Under this constraint, the width of the slit gap1 and the circumference of the opening hole can be adaptively set. For example, if the hole is used for lighting of the camera, the size of the hole should not be smaller than the size of the area where the camera is located, and at this time, the size of the hole can be determined based on the size of the camera, that is, the size of the hole is fixed. Based on the above constraint, the effective length of the gap1 is determined and the relative portions of the first arm 102 and the second arm 104 are sized.

In an embodiment, the cross section of the hole may be circular, rectangular, etc., and the shape of the hole may also depend on the function of the hole when the antenna device is applied to an electronic device. As shown in fig. 1, taking a cross section of the hole as an example, the gap1 faces the center of the hole, and the first support arm 102 and the second support arm 104 in the view angle of fig. 1 are flush at a side far away from the metal piece 106, which is beneficial to being arranged at the positions of the frame of the electronic device. The effective length of the gap1 may be the sum of the length L1 of the portion of the first arm 102 facing the second arm 104 and the length L2 of the portion of the second arm 104 facing the first arm 102.

In one embodiment, as shown in fig. 2 and 3, the first radiating element 10 further includes a first feeding point K1 disposed on the first support arm 102, and a first feed source G1 connected to the first feeding point K1, where the first feed source G1 is used to excite the first support arm 102, the metal piece 106, and the second support arm 104 to support the first frequency band together.

The first feed G1 refers to a device or element for providing a feed current. The first feed G1 may provide a first feeding current I1 supporting the target resonant frequency band, as shown in fig. 2, where the first feeding current I1 is fed into the first arm 102 from the first feeding point K1, and is transmitted on the first arm 102, when the first feeding current I1 is transmitted to the first arm 102 and the second arm 104 at a spaced position, based on the tuning effect of the aperture hole and the gap1, the first feeding current I1 is transmitted from the first arm 102 to the metal piece 106, and is fed into the second arm 104 after being transmitted on the metal piece 106 around the aperture hole, and is continuously transmitted on the second arm 104 until the coupling end of the second arm 104 (the end, close to the second radiating element 20, on the second arm 104), as shown in fig. 2, where the first feeding current I1 needs to take a longer path to reach the coupling end (as shown in fig. 4), so that when the first feed G1 excites the first radiating element 10 to support the target resonant frequency band, the isolation between the first radiating element 10 and the second radiating element 20 is effectively coupled to the second radiating element 20 than the gap2 in the conventional scheme.

Optionally, the first arm 102 on the first radiating element 10 may further be provided with a first ground point D1 to form an IFA (inverted-F Antenna) Antenna, but the first radiating element 10 may also be another Antenna, which is not limited herein.

In one embodiment, as shown in fig. 2 and 3, the second radiating element 20 includes a radiator 202, a second feeding point K2, and a second feed G2 connected to the second feeding point K2, where the second feed G2 is used to excite the radiator 202 to support a second frequency band.

The second feed G2 refers to a device or element for providing a feed current. The second feed G2 may provide a second feeding current I2 supporting the target resonant frequency band, as shown in fig. 3, the second feeding current I2 is connected to the radiator 202 from the second feeding point K2 and is transmitted to the end of the radiator 202, when transmitted to the coupling end of the radiator 202 (the end of the radiator 202 near the second arm 104), the second feeding current I2 is fed into the first radiating element 10 from the coupling end of the second arm 104 based on the gap2 coupling, and is transmitted to the direction of the gap1 on the second arm 104, when the second feeding current I2 reaches the gap1, based on the action of an equivalent LC parallel circuit, the second feeding current I2 is transmitted along the gap1 and the periphery of the open hole, and is fed out through the first feeding point K1, and when the second feeding current I2 is fed to the first feeding point K1, a long path is already passed, and the path loss is large, so that the isolation of the first radiating unit 10 and the second radiating unit 20 can be realized when the second radiating unit 20 supports the target resonant frequency band.

Optionally, the second radiating element 20 may also be provided with a second ground point D2 to form an IFA antenna, but it is not excluded that it may be another form of antenna.

In one embodiment, as shown in fig. 3, the antenna device further includes: a metal floor. The first radiating element 10 further comprises a first feed G1, and the first radiating element 10 is configured to couple with a metal floor under excitation of the first feed G1 to support the first frequency band. The second radiating element 20 includes a second feed G2, and the second radiating element 20 is configured to couple with the metal floor under the excitation of the second feed G2 to support the second frequency band.

The first radiating element 10 may be directly connected or coupled to the metal floor through the first ground point D1 to support the transmission of the feeding current provided by the first feed G1 on the metal floor, and increase the distribution of the feeding current (as shown in fig. 4), so as to achieve a low SAR design and improve radiation efficiency. Similarly, the second radiating element 20 may be directly connected or coupled to the metal floor through the second ground point D2 to support the transmission of the feed current provided by the second feed source G2 on the metal floor, so as to achieve SAR reduction and radiation efficiency improvement.

Under the coupling with the metal floor, because the existence of the gap1 suppresses the current components in the directions of the first support arm 102, the second support arm 104 and the second radiating unit 20, and suppresses a part of the floor transverse current in the view angle shown in fig. 4, the directivity in the target resonant frequency band is low, and the omni-directional number is favorable for the balanced radio frequency signal transmission in all directions. In the structure shown in fig. 3, when the first frequency band includes the WiFi2.4G frequency band and the second frequency band includes the high frequency band, the directivity coefficient of the first radiating element 10 is as low as 3.8dBi (shown in fig. 5) under the excitation of the feeding current of the WiFi2.4G frequency band. In addition, the current flowing into the port of the second radiation unit 20 is reduced when the first radiation unit 10 is excited, the isolation is improved, the isolation and the omnidirectional radiation can be both considered, and the communication quality is improved.

In addition, compared with the defect ground structure mode, the antenna device provided by the embodiment of the application does not need to be slotted on the metal floor, and is beneficial to arranging components on the metal floor. In this way, no extra band-stop filter and other devices are needed to be added at the feed point, so that unnecessary loss caused by the devices is avoided, and the complexity of the circuit is reduced.

In one embodiment, the first frequency band comprises a WiFi2.4G frequency band and the second frequency band comprises a high frequency band for mobile communications. The WiFi2.4G Band (2.4-2.5 GHz) and the High frequency Band (HB, high Band,2300MHz-2690 MHz) have coincident bands, when the first radiating element 10 supports the WiFi2.4G Band and the second radiating element 20 supports the HB Band, in the conventional art, the isolation between the two radiating elements is only about-11 dB in WiFi2.4G, and when the two radiating elements work simultaneously, the two radiating elements have relatively large influence, resulting in poor communication quality. By adopting the antenna device provided by the embodiment of the application, when the first radiating element 10 supports the WiFi2.4G frequency band and the second frequency band supports the HB frequency band, the first feeding current I1 of the first radiating element 10 feeds power to the direction where the second feeding point K2 is located after passing through the decoupling structure formed by the open hole and the gap1, and similarly, the second feeding current I2 of the second radiating element 20 also transmits power to the first feeding point K1 after passing through the decoupling structure formed by the open hole and the gap1, so that the high isolation degree can be realized between the two feeding ports based on the decoupling structure, the communication quality is improved, and the isolation degree requirement can be realized by only opening a small gap1 on the multiplexing metal piece 106. For example, in the architecture shown in fig. 3, when the first radiating element 10 supports the WiFi2.4G frequency band, the isolation between the first feeding point K1 and the second feeding point K2 may reach-18 dB (shown in S2,1 curves shown in fig. 6, where S1,1 is an S parameter curve of the first radiating element 10, and S2,2 is an S parameter curve of the second radiating element 20).

In one embodiment, the second frequency Band further includes at least one of a Middle frequency Band (1710 MHz-2170 MHz) and an Ultra High frequency Band (3000 MHz-10000 Mhz). The second feed G2 may be used to provide a third feed current in addition to the second feed current I2 to excite the radiator 202 in the second radiating element 20 to support the low frequency band. The second feed G2 may also provide a fourth feed current to excite the radiator 202 in the second radiating element 20 to support the uhf band. The second feeding current I2 may also excite the radiator 202 in the second radiating element 20 to support a mid-High Band (1000 MHz-3000 MHz). That is, the second radiating element 20 may support communication in multiple frequency bands, by setting a grounding point and a tuning connection point on the radiator 202, where the tuning connection point is connected to a matching circuit, and based on tuning and grounding setting of the matching circuit, it is possible to implement feeding paths fed out from multiple positions after the second feeding point K2 is fed into the radiator 202, where the electrical lengths of the feeding paths are different, so as to support radio frequency signal transmission in multiple different frequency bands.

In one embodiment, the first frequency band further comprises an ultra-high frequency band. For example, at least one of N77, N78, and N79. A first grounding point D1 may be disposed on a side of the first arm 102 away from the gap1, and the first feed G1 is further configured to provide a fourth feeding current, where the feeding current is fed from the first feeding point K1 to the first arm 102, is transmitted on the first arm 102 in a direction where the first grounding point D1 is located, and is fed out through the first grounding point D1, and an electrical length of the feeding path is matched with the uhf band.

In one embodiment, an electronic device is further provided, including the antenna device. In the electronic device with the antenna device, when the frequency ranges supported by the first radiating element 10 and the second radiating element 20 are overlapped, the equivalent LC parallel circuit formed by the open hole and the gap1 is a decoupling structure, so that the first feeding current I1 from the first radiating element 10 to the second radiating element 20 is weakened due to the decoupling structure, and vice versa, the second feeding current I2 from the second radiating element 20 to the first radiating element 10 is weakened due to the decoupling structure, that is, under the same frequency range, a high isolation is provided between the feeding point of the first radiating element 10 and the feeding point of the second radiating element 20, so that the communication quality can be ensured.

In one embodiment, the electronic device further includes a camera, and the opening hole corresponds to a position of the camera. I.e. the metal piece 106 may be the metal piece 106 at the camera. By multiplexing the metal piece 106 at the camera as part of the first radiating element 10, a miniaturized design may be facilitated. In addition, an opening hole for lighting of the camera on the metal piece 106 can be utilized, and a gap1 is opened to realize the decoupling structure. The equivalent LC parallel circuit forms a band stop effect on the target resonant frequency band, so that the feed current of the target resonant frequency band flows around the hole and the gap1, and the isolation of the first radiating element 10 and the second radiating element 20 is realized. The device such as a band-stop filter is not needed to be additionally arranged, unnecessary loss in the non-target resonance frequency band can be avoided, and the communication performance of the non-target resonance frequency band is ensured.

The size of the equivalent inductance is determined by the size of the open hole, and the larger the diameter of the open hole is, the larger the equivalent inductance value is. The size of the equivalent capacitance C is determined by the width and the relative area of the gap1, and the increase of the equivalent capacitance can be achieved by increasing the length and the width of the gap1 or increasing the thickness of the gap1 (the distance between the plates of the first arm 102 and the second arm 104). The greater the length and width of the gap1, the more advantageous is the ultra-thin design of the metal piece 106 for the same equivalent capacitance. In an alternative embodiment, the width of the gap1 may be set to be about 0.2mm, and the circular opening hole diameter may be set to be about 5.3mm, so as to support isolation of the first radiating element 10 and the second radiating element 20 in the WiFi2.4G frequency band.

In one of the embodiments, in case the antenna arrangement comprises a metal floor, the metal floor is at least part of a midplane, a circuit board in the electronic device. Compared with the traditional defect ground isolation mode, the antenna device provided by the embodiment of the application does not need to be slotted on the metal floor, and is beneficial to arranging components on the metal floor such as a circuit board.

In one embodiment, the electronic device further comprises a top frame 2, a first side frame 3, a bottom frame 4, and a second side frame 5 connected end to end in sequence; wherein the first radiating element 10 and the second radiating element 20 are arranged at the top rim 2.

When the first radiating element 10 transmits the WiFi2.4G band radio frequency signal, a part of current flows along the-x direction as shown in fig. 4 and passes through the second radiating element 20 and the metal floor to support WiFi signal transmission, in the case of a horizontal screen hand-holding scenario (as shown in fig. 7), the current flowing along the-x direction is suppressed, and the current rarely flows to the palm position, so that the antenna performance in the horizontal screen hand-holding scenario decreases in a decreasing manner (in the horizontal screen hand-holding scenario, the efficiency curves in the conventional technology are shown as curves E2 and 1 in fig. 8, and the efficiency curves in the embodiment are shown as E1 and 1 in fig. 8). As shown in fig. 8, in the horizontal-screen hand-held scenario, the efficiency of the first radiating element 10 in the WIFI2.4G relative free space state is reduced from-1.7 dB (see curves E2, 2) to-7.5 dB (see curves E1, 2), the reduction is 5.8dB, and compared with the reduction of 6.8dB in the conventional scheme, the reduction is reduced by 1dB. Meanwhile, the antenna efficiency of the N78 frequency band of the first radiation unit 10 is reduced by 1dB in a horizontal screen hand-held scene. That is, the electronic equipment provided by the embodiment of the application can effectively improve the antenna efficiency reduction in the horizontal screen hand-held scene.

Of course, in one embodiment, the first radiating element 10 and the second radiating element 20 may also be disposed at the bottom rim 4, the first side rim 3 and the second side rim 5. No matter in which frame the first radiation unit 10 and the second radiation unit 20 are disposed, the antenna efficiency can be improved compared with the conventional art when the human hand approaches the frame.

The second radiating element 20 may also be disposed at a corner position of the frame, and the radiators 202 are disposed on two adjacent frames, so that low-frequency communications can be advantageously realized by using the corner position.

As shown in fig. 9, in the electronic device provided in the embodiment of the present application, due to the change of the current distribution, a part of the current component in the-x direction flows around the proactive hole, and the part of the current is far away from the human body, and has little contribution to the SAR value, so that the SAR value in the WiFi2.4G frequency band is improved, and compared with the SAR value in the conventional technology, the SAR value is reduced to 2.52W/kg (shown in fig. 9 b) as compared with 2.95W/kg (shown in fig. 9 a).

Not only can the SAR value of the WiFi2.4G frequency band be reduced, but also other frequency bands supported by the first radiating element 10 will not be negatively affected, as shown in fig. 10, the SAR value of N78 supported by the first radiating element 10 (fig. 10 b) is comparable to the conventional scheme (fig. 10 a).

As further illustrated in fig. 11, the electronic device 100 is illustrated as a mobile phone, and in particular, as illustrated in fig. 11, the mobile phone 100 may include a memory 101 (optionally including one or more computer readable storage media), a processing circuit 40, a peripheral interface 103, a radio frequency system 104, and an input/output (I/O) subsystem 106. These components optionally communicate via one or more communication buses or signal lines 109. Those skilled in the art will appreciate that the handset 100 shown in fig. 11 is not limiting of the handset and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. The various components shown in fig. 11 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.

Memory 101 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Illustratively, the software components stored in the memory 101 include an operating system 1011, a communication module (or set of instructions) 1012, a Global Positioning System (GPS) module (or set of instructions) 1013, and the like.

The processing circuitry 40 and other control circuitry, such as control circuitry in the radio frequency system 104, may be used to control the operation of the handset 100. The processing circuitry 40 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.

The processing circuitry 40 may be configured to implement a control algorithm that controls the use of the antenna in the handset 100. The processing circuitry 40 may also issue control commands or the like for controlling various switches, tuning circuits, etc. in the radio frequency system 104.

The I/O subsystem 106 couples input/output peripheral devices on the handset 100, such as keypads and other input control devices, to the peripheral interface 103. The I/O subsystem 106 optionally includes a touch screen, keys, tone generator, accelerometer (motion sensor), ambient light sensor and other sensors, light emitting diodes, and other status indicators, data ports, etc. Illustratively, a user may control the operation of the handset 100 by supplying commands via the I/O subsystem 106, and may use the output resources of the I/O subsystem 106 to receive status information and other outputs from the handset 100. For example, the user may activate the handset or deactivate the handset by pressing button 1061.

The radio frequency system 104 may comprise an antenna arrangement as in any of the previous embodiments.

According to the electronic equipment provided by the embodiment of the application, the metal piece at the camera is used for forming the holes, and the slots are formed on the basis, so that the decoupling structure is realized, and the multi-antenna isolation under the limited space is facilitated. Without increasing the cost and without negatively affecting the layout and structural stacking of the metal floor. Meanwhile, based on the slit setting, the radiation directivity of the target resonant frequency band can be improved, the antenna efficiency reduction in a hand-held scene is improved, and the low SAR design is realized.

The first radiating element and the second radiating element of the electronic device provided by the embodiment of the application are not limited to IFA antennas, but may be other antennas that are galvanically coupled through a metal floor.

In the description of the present specification, reference to the term "some embodiments," "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. An antenna device, comprising:

the first radiation unit comprises a first support arm, a second support arm and a metal piece, a gap is formed between the first support arm and the second support arm, the metal piece is respectively connected with the first support arm and the second support arm, an opening communicated with the gap is formed on one side, far away from the gap, of the metal piece, and the first radiation unit is used for supporting a first frequency band;

the second radiation unit is provided with a gap between the second radiation unit and the coupling end of the second support arm and is used for supporting a second frequency band, and the first frequency band and the second frequency band are at least partially overlapped;

the opening and the gap are used for supporting a target resonance frequency band, so that feed current of the target resonance frequency band is transmitted around the opening and the gap, and the target resonance frequency band is a frequency band where the first frequency band and the second frequency band coincide.

2. The antenna device according to claim 1, characterized in that the sum of the effective length of the slot and the perimeter of the aperture is less than half the wavelength of the target resonance frequency band, the effective length being the path length of the feed current of the target resonance frequency band transmitted around the slot.

3. The antenna assembly of claim 1 wherein the first radiating element further comprises a first feed point disposed on the first arm and a first feed connected to the first feed point for exciting the first arm, the metallic member, and the second arm to jointly support the first frequency band.

4. The antenna device according to claim 1, wherein the second radiating element comprises a radiator, a second feed point and a second feed connected to the second feed point, the second feed being for exciting the radiator to support the second frequency band.

5. The antenna device according to claim 1, characterized in that the antenna device further comprises:

a metal floor;

the first radiating element further comprises a first feed source, and the first radiating element is used for being coupled with the metal floor under the excitation of the first feed source so as to support a first frequency band;

the second radiating element comprises a second feed source, and the second radiating element is used for being coupled with the metal floor under the excitation of the second feed source so as to support a second frequency band.

6. The antenna arrangement according to any of claims 1-5, characterized in that the first frequency band comprises a WiFi2.4G frequency band and the second frequency band comprises a medium and high frequency band of mobile communication.

7. The antenna device of claim 6, wherein the first frequency band further comprises an ultra-high frequency band.

8. An electronic device, comprising: an antenna device as claimed in any of claims 1-7.

9. The electronic device of claim 8, further comprising a camera, wherein the aperture corresponds to the camera position.

10. The electronic device of claim 8, wherein in the case where the antenna arrangement comprises a metal floor, the metal floor is at least part of a midplane, circuit board in the electronic device.

11. The electronic device of any of claims 8-10, further comprising a top bezel, a first side bezel, a bottom bezel, and a second side bezel connected end-to-end in order;

the first radiating element and the second radiating element are arranged on the top frame.