CN117638475A - Antenna device and electronic apparatus - Google Patents

Abstract

The application relates to an antenna device and an electronic device. In the antenna device, a radiator is provided with a first grounding point and a feed point connected with a feed source, the radiator is used for being coupled with a metal floor under the excitation of the feed source, a parasitic branch is provided with a second grounding point, a gap is arranged between the parasitic branch and the radiator, a tuning circuit is respectively connected with the feed source and the feed point, the tuning circuit is used for supporting the radiator and the parasitic branch to work in a first resonance mode so as to support a first frequency band, and the tuning circuit is also used for adjusting the radiator to support a second frequency band and a third frequency band, wherein the first frequency band, the second frequency band and the third frequency band are different; the first resonance mode is a mode that excitation current provided by the feed source resonates between a first target end and a second target end, the first target end is one end, far away from a parasitic branch, of the radiator, and the second target end is one end, far away from the radiator, of the parasitic branch. The antenna device can realize broadband design under small headroom, and for example, wiFi7 and UWB frequency bands can be considered.

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

Electronic equipment such as mobile phones are designed to be thinner and thinner, and communication performance requirements are difficult to meet under the small headroom trend.

Disclosure of Invention

Based on this, it is necessary to provide an antenna device and an electronic apparatus.

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

a metal floor;

a feed source;

the radiator is provided with a first grounding point and a feed point connected with the feed source, and is used for being coupled with the metal floor under the excitation of the feed source;

a parasitic branch having a second ground point, and a gap between the parasitic branch and the radiator;

the tuning circuit is respectively connected with the feed source and the feed point, is used for supporting the radiator and the parasitic branches to work in a first resonance mode so as to support a first frequency band, and is also used for adjusting the radiator to support a second frequency band and a third frequency band, wherein the first frequency band, the second frequency band and the third frequency band are different;

the first resonance mode is a mode that excitation current provided by the feed source resonates between a first target end and a second target end, the first target end is one end, far away from a parasitic branch, of the radiator, and the second target end is one end, far away from the radiator, of the parasitic branch.

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 grounding point is arranged on the parasitic branch knot to form the parasitic structure in the L-shaped ring, two additional boundary conditions are added, the parasitic structure is matched with the radiator under the tuning action of the tuning circuit, the mode that exciting current resonates between the first target end and the second target end can be supported, wherein the first target end is the end, away from the parasitic branch knot, of the radiator, the second target end is the end, away from the radiator, of the parasitic branch knot, so that the first frequency band is supported, meanwhile, the parasitic branch knot is also used for adjusting the radiator to support the second frequency band and the third frequency band, the frequency band ranges of the first frequency band, the second frequency band and the third frequency band are different, namely, the wideband design can be realized only by adding the parasitic branch knot on the basis of the radiator, and the antenna communication performance under small clearance is facilitated to be 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 schematic diagram of S-parameter and efficiency test results under the structure of FIG. 1;

FIG. 4 is a graph showing the radiation pattern of the antenna device in the UWB CH5 band under the structure of FIG. 1;

FIG. 5 is a schematic diagram showing the radiation duty ratio of the antenna device in the UWB CH5 band under the structure of FIG. 1;

FIG. 6 is a graph showing the radiation pattern of the antenna device in the UWB CH9 band under the structure of FIG. 1;

FIG. 7 is a schematic diagram showing the radiation duty cycle of the antenna device in the UWB CH9 band under the structure of FIG. 1;

fig. 8 is a schematic diagram of S-parameter and efficiency test results of the antenna device under the structure of fig. 2;

FIG. 9 is a third schematic diagram of the antenna device according to the embodiment;

FIG. 10a is a schematic diagram of the tuning units in the antenna device according to one embodiment;

FIG. 10b is a second schematic diagram of the tuning units of the antenna device according to one embodiment;

FIG. 10c is a third schematic diagram of the tuning units in the antenna device according to one embodiment;

FIG. 10d is a diagram showing the structure of tuning units in the antenna device according to one embodiment;

FIG. 10e is a schematic diagram of the tuning units in the antenna device according to one embodiment;

FIG. 10f is a diagram illustrating a structure of tuning units in an antenna device according to one embodiment;

FIG. 10g is a diagram of a tuning unit in the antenna device according to one embodiment;

FIG. 10h is a schematic diagram of a tuning unit in an antenna device according to one embodiment;

FIG. 11 is a schematic diagram of an electronic device according to an embodiment;

fig. 12 is a second 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/components, but these elements/components are not limited by these terms. These terms are only used to distinguish one element/component from another element/component. For example, a first side frame may be referred to as a second side frame, and similarly, a second side frame may be referred to as a first side frame, without departing from the scope of the present application. Both the first side frame and the second side frame are side frames, but they are not the same side frame.

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.

The antenna device provided by the embodiment of the application can be applied to electronic equipment. The electronic device may be a handheld device, a vehicle mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, as well as various forms of User Equipment (UE) (e.g., a cell phone), a Mobile Station (MS), etc. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

In one embodiment, as shown in fig. 1, there is provided an antenna apparatus including: metal floor 90, feed S1, radiator 10, parasitic stub 20, and tuning circuit M. The feed S1 is a device that supplies an excitation current.

The radiator 10 is provided with a first grounding point D1 and a feed point K connected with the feed source S1, and the radiator 10 is used for being coupled with the metal floor 90 under the excitation of the feed source S1.

The parasitic stub 20 has a second ground point D2, and a gap is provided between the parasitic stub 20 and the radiator 10. When the radiator 10 transmits exciting current under the excitation of the feed source S1, the slot can be loaded with capacitance to the radiator 10, and the current distribution is not affected.

The tuning circuit M is respectively connected with the feed source S1 and the feed point K, and is used for supporting the radiator 10 and the parasitic branch 20 to work in a first resonance mode so as to support a first frequency band, and is also used for adjusting the radiator 10 to support a second frequency band and a third frequency band. Wherein the first frequency band, the second frequency band and the third frequency band are different from each other. The first resonance mode is a mode that excitation current provided by the feed source S1 resonates between a first target end and a second target end, wherein the first target end is an end, far away from the parasitic branch 20, of the radiator 10, and the second target end is an end, far away from the radiator 10, of the parasitic branch 20.

Alternatively, the tuning circuit M may include at least one of a capacitance, a resistance, and an inductance, or a combination of a plurality thereof. In the embodiment of the present application, the device type of the frequency modulation device included in the tuning circuit M and the connection relationship between devices are not further limited.

Alternatively, the radiator 10 and the parasitic branch 20 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, and a metal radiating branch, respectively. In the embodiment of the present application, the types of the radiator 10 and the parasitic branch 20 are not further limited, and the types of the radiator 10 and the parasitic branch 20 may be the same or different. For example, both may be LDS antenna radiators.

Specifically, the antenna device provided in the embodiment of the present application forms a parasitic structure in the form of a loop L based on the parasitic branch 20 provided with the second ground point D2, and adds two additional boundary conditions on the basis of the radiator 10. Under the tuning action of the tuning circuit M, the parasitic branch 20 is matched with the radiator 10, so that a first resonance mode of excitation current resonance between a first target end and a second target end can be supported, wherein the first target end is one end, far away from the parasitic branch 20, of the radiator 10, and the second target end is one end, far away from the radiator 10, of the parasitic branch 20 so as to support a first frequency band, in addition, the tuning circuit M is also used for adjusting the radiator 10 to support a second frequency band and a third frequency band, the frequency band ranges of the first frequency band, the second frequency band and the third frequency band are different, namely, the broadband design can be realized only by adding the parasitic branch 20 on the basis of the radiator 10, and the antenna communication performance under small clearance is facilitated.

The antenna formed by the radiator 10, the tuning circuit M and the feed source S1 may be an antenna supporting WiFi 5G, and in combination with the parasitic branch 20, may support communication in WiFi7 multi-Band and UWB (ultra wide Band) Band.

In one embodiment, as shown in fig. 1 and 2, the radiator 10 has a first end and a second end, the first ground point D1 is located at the first end, and the feeding point K is located at the second end; the tuning circuit M is configured to support the radiator 10 to operate in a second resonant mode to support a second frequency band, where the second resonant mode is a loop mode from the first ground point D1 to the feed point K, and a current distribution in the mode is shown as I2 in fig. 1 and 2, and the feed current is from the first ground point D1 to the feed point K on the radiator 10 and from the feed point K to the feed source S1.

When the feed source S1 provides an excitation current corresponding to the second frequency band, the tuning circuit M is adjusted to support the excitation signal corresponding to the second frequency band to pass through, after the excitation current passes through the tuning circuit M, the excitation current is connected to the radiator 10 from the feed point K, is transmitted on the radiator 10, and is fed out based on the first grounding point D1, so that the feeding on the feeding path is realized, and the circulation mode from the first grounding point D1 to the feed point K is supported.

In one embodiment, the tuning circuit M is further configured to support the radiator 10 to operate in a third resonant mode to support a third frequency band, where the third resonant mode is a half-loop mode from the first ground point D1 to the feed point K.

The current distribution in this mode is shown as I3 in fig. 1 and 2, and the current is inversely distributed from the current zero point on the radiator 10, i.e., from the first feeding point K to the current zero point and from the first ground point D1 to the current zero point.

When the feed source S1 provides excitation current corresponding to the third frequency band, the tuning circuit M is adjusted to support the excitation signal corresponding to the third frequency band to pass through, after the excitation current passes through the tuning circuit M, the excitation current is connected to the radiator 10 from the feed point K, and is transmitted to a current zero point on the radiator 10, and meanwhile, based on the common ground, the feed current is transmitted from the first grounding point D1 to the current zero point on the radiator 10, so as to support a half-loop current mode from the first grounding point D1 to the feed point K.

In one embodiment, as shown in fig. 1, the parasitic stub 20 has a coupling end and a first free end, a gap is provided between the first end of the radiator 10 and the coupling end of the parasitic stub 20, and the second ground point D2 is located at the coupling end; the first resonant mode comprises a half-loop flow mode of the feed point K to the first ground point D1 and a quarter-wavelength mode of the second ground point D2 to the first free end.

The current distribution in this mode is shown as I1 in fig. 1, from the current zero on the radiator 10, the current reversal, and from the second ground point D2 to the first free end.

When the feed source S1 provides an excitation current corresponding to the first frequency band, the tuning circuit M is adjusted to support the excitation signal corresponding to the first frequency band to pass through, after the excitation current passes through the tuning circuit M, the excitation current is connected to the radiator 10 from the feed point K, is transmitted to the current zero point on the radiator 10, and meanwhile, based on the common ground, the feed current is transmitted from the first grounding point D1 to the current zero point on the radiator 10, so as to support a half-loop current mode from the first grounding point D1 to the feed point K. Furthermore, the excitation current is fed from the metal floor 90 to the second ground point D2 and is transmitted from the second ground point D2 to the first free end based on the common ground.

In the antenna device provided by the embodiment of the application, due to the existence of the parasitic branch 20, a plurality of resonance modes are supported, and meanwhile, a quarter wavelength mode from the second grounding point D2 to the first free end is also implied, the frequencies of all the resonance modes are close, and the bandwidth is widened.

Under the architecture shown in fig. 1, the S parameters and efficiency of the feed port of the feed source S1 are shown in fig. 3. It can be seen that the frequency band supported by the radiator 10 can cover 4.5G-9GHz, i.e. the WIFI7 frequency band, and at the same time, can cover UWB CH5 (6.2-6.7 GHz) and UWB CH9 (7.7-8.2 GHz) frequency bands.

The test is performed under the architecture shown in fig. 1, and the test result shown in fig. 3 is obtained, referring to the S1,1 curves, and it can be seen that, when the tuning circuit M adjusts the loop mode from the first grounding point D1 to the feeding point K, the radiator 10 operates at a 4.6824GHz resonant frequency point. When the radiator 10 supports the half-loop mode from the first grounding point D1 to the feeding point K, the radiator 10 operates at a 7.5134GHz resonance frequency point. Under tuning circuit M tuning, when the first resonant mode supported by radiator 10 and parasitic branch 20 includes a half-loop mode from first ground point D1 to feed point K, and a quarter-wavelength mode from second ground point D2 to the first free end, it operates at a 8.3626GHz resonant frequency. From the overall efficiency curve E of the system _T From the point of view (in the figure E) _R As a system efficiency curve), the radiation efficiency in the frequency range from 4.5GHz to 9GHz is relatively high, namely, the antenna device provided by the embodiment of the application can realize high-efficiency radiation in the broadband frequency range from 4.5GHz to 9GHz, and realize broadband design and communication efficiency improvement. And still have high efficiency and ultra wide bandwidth in the case where the radiator 10 and parasitic stub 20 are LDS antenna radiators 10.

In addition, in the antenna device provided in the embodiment of the present application, when supporting the UWB band, the main radiation direction is a direction perpendicular to the metal floor 90.

For example, under the architecture shown in fig. 1, the total field pattern of the UWB CH5 band is shown in fig. 4, and at this time, the forward direction (taking the z-axis direction as the forward direction) of the antenna device occupies the forward direction (the forward ratio is 0.116/0.214, which is about equal to 54.2%) as shown in fig. 5, so that the main radiation direction of the antenna device is the forward direction (the forward ratio is 0.116/0.214), the UWB antenna requirement is satisfied, and the functions of UWB object finding and ranging can be realized.

Under the architecture shown in fig. 1, the total field pattern of the UWB CH9 band is shown in fig. 6, and at this time, the forward direction (taking the z-axis direction as the forward direction) of the antenna device occupies a space as shown in fig. 7, it can be seen that the main radiation direction of the antenna device is the forward direction (the forward ratio is 0.181/0.315, which is equal to about 57.5%), so as to satisfy the UWB antenna requirement and realize the functions of UWB object finding ranging and the like.

According to the antenna device provided by the embodiment of the application, the characteristics that the gap can be equivalent to a capacitor for high frequency are utilized, the parasitic branch 20 provided with the second grounding point D2 is introduced to form a parasitic structure in a LOOP-L form, two additional boundary conditions are added to form a multimode antenna, the bandwidth is expanded, the WIFI7 frequency band is covered, and at least one UWB frequency band is supported.

In one embodiment, as shown in fig. 2, the parasitic stub 20 has a ground end and a second free end, and a gap is provided between the second end of the radiator 10 and the second free end of the parasitic stub 20, and the second ground point D2 is located at the ground end. The first resonance mode includes a circulation mode from the first ground point D1 to the second ground point D2.

The current distribution in this mode is shown as I1 in fig. 2, from the first ground point D1 to the feeding point K, and from the second free end to the second ground point D2.

In one embodiment, the radiator 10 may support WiFi 5G, where the frequency is higher, and the slot is only capacitive loading for the radiator 10, and does not affect current distribution, where the first resonant mode is a loop mode from the first ground point D1 to the second ground point D2, the second resonant mode is a loop mode from the first ground point D1 to the feeding point K, and the third resonant mode is a half loop mode from the first ground point D1 to the feeding point K. That is, the circulation pattern is doubled due to the parasitic dendrite 20, thereby realizing bandwidth extension and broadband design at small headroom.

In one embodiment, as shown in fig. 2, the tuning circuit M is further configured to support the radiator 10 and the parasitic branch 20 to operate in a fourth resonant mode together to support a fourth frequency band, where the fourth resonant mode is a half-loop mode (a current distribution is shown as I4 from the first ground point D1 to a current zero on the radiator 10, and from the second ground point D2 to a second free end from the feed point K to a current zero on the radiator 10) from the first ground point D1 to the second ground point D2. The fourth frequency band is different from the first frequency band, the second frequency band and the third frequency band.

Under the structure shown in fig. 2, a test under a certain size is performed to obtain the S parameter and efficiency test result shown in fig. 8, and according to the graph, the broadband design of WiFi7 and UWB can be still realized based on tuning of the tuning circuit M under the structure shown in fig. 2.

Specifically, referring to the S1,1 curve, the tuning circuit M is configured to operate the antenna device in the 4.635GHz resonant frequency band when the radiator 10 and the parasitic branch 20 support the loop mode from the first ground point D1 to the second ground point D2. When the tuning circuit M adjusts the radiator 10 to support the loop mode from the first ground point D1 to the feed point K, the antenna device operates in the 5.724GHz resonant frequency band. When the adjusting circuit adjusts the half-loop mode of the radiator 10 and the parasitic branch 20 to support the first ground point D1 to the second ground point D2 together, the antenna device operates in the 6.767GHz resonant frequency band. When the adjusting circuit adjusts the radiator 10 to support the half-loop mode from the first grounding point D1 to the feeding point K, the antenna device operates in the 8.091GHz resonant frequency band. From the overall efficiency curve E of the system _T From the point of view (in the figure E) _R As a system efficiency curve), the radiation efficiency in the frequency range from 4.5GHz to 9GHz is relatively high, namely, the antenna device provided by the embodiment of the application can realize high in the broadband frequency range from 4.5GHz to 9GHzAnd the radiation is effective, and the wide bandwidth design and the communication efficiency improvement are realized. And still have high efficiency and ultra wide bandwidth in the case where the radiator 10 and parasitic stub 20 are LDS antenna radiators 10.

In addition, through tests, when the antenna device supports the UWB frequency band under the structure of fig. 2, the main radiation direction is not forward, the forward duty ratio is more than 50%, and the functional requirements of UWB ranging and the like can be met.

In one embodiment, as shown in fig. 8, there are two parasitic branches 20, one of the parasitic branches 20 having a coupling end and a first free end, there being a gap between the first end of the radiator 10 and the coupling end of the parasitic branch 20, and a second ground point D2 on the parasitic branch being located at the coupling end thereof. The other parasitic leg 20 has a ground end and a second free end, and a gap is provided between the second end of the radiator 10 and the second free end of the parasitic leg 20, and the second ground point D2 on the parasitic leg is located at the ground end thereof.

By adding L-shaped parasitic branches 20 on both sides of the radiator 10, more resonant modes can be obtained, and the superposition principle is similar to that of fig. 1 and fig. 2 in the above embodiment, and the implementation process of the multi-mode resonance under the architecture of fig. 1 and fig. 2 can be understood with reference to the above embodiment.

In one embodiment, the range of the first, second and third frequency bands covers a plurality of frequency bands of the WiFi7 and at least one UWB frequency band.

In one embodiment, the range of the first, second, third, and fourth frequency bands covers a plurality of frequency bands of WiFi7, and a plurality of UWB frequency bands.

The tuning circuit M in each embodiment of the present application may include a gating switch and at least one tuning unit with different tuning parameters, where any one tuning unit is gated by the gating switch, so that the tuning circuit M works in different resonant frequency bands. As shown in fig. 10 a-10 h, schematic circuit architecture diagrams of tuning units with different tuning parameters are given in some embodiments of the present application. It will be appreciated that the two leads of each tuning unit shown in fig. 10 a-10 h are used to connect external circuitry.

In one embodiment, as shown in fig. 10a, the tuning unit may comprise an inductance L1 and a capacitance C1 in series.

In one embodiment, as shown in fig. 10b, the tuning unit may comprise an inductance L1 and a capacitance C1 in parallel.

In one embodiment, as shown in fig. 10C, the tuning unit may include an inductance L1, a capacitance C1, and a capacitance C2. The inductor L1 and the capacitor C1 are connected in parallel and then connected in series to the capacitor C2.

In one embodiment, as shown in fig. 10d, the tuning unit may include an inductance L1, a capacitance C2, and an inductance L2. The inductor L1 and the capacitor C1 are connected in parallel and then connected in series to the inductor L2.

In one embodiment, as shown in fig. 10e, the tuning unit may include an inductance L1, a capacitance C1, and a capacitance C2. The inductor L1 and the capacitor C1 are connected in series and then connected in parallel to the capacitor C2.

In one embodiment, as shown in fig. 10f, the tuning unit may include an inductance L1, a capacitance C1, and an inductance L2. The inductor L1 and the capacitor C1 are connected in series and then connected in parallel to the inductor L2.

In one embodiment, as shown in fig. 10g, the tuning unit may include an inductance L1, a capacitance C2, and an inductance L2. The inductor L1 and the capacitor C1 are connected in parallel to form a first branch, the inductor L2 and the capacitor C2 are connected in parallel to form a second branch, and the first branch and the second branch are connected in series.

In one embodiment, as shown in fig. 10h, the tuning unit may include an inductance L1, a capacitance C2, and an inductance L2. The inductor L1 and the capacitor C1 are connected in series to form a third branch, the inductor L2 and the capacitor C2 are connected in series to form a fourth branch, and the third branch and the fourth branch are connected in parallel.

Alternatively, the tuning circuit M may include a plurality of tuning units (including but not limited to the tuning units described in the foregoing embodiments) and a gating switch, where tuning parameters of the tuning units are different, and the gating switch is connected to the feed source S1 and the tuning units respectively. For example, the gating switch includes one end and a plurality of second ends, the end of the gating switch is connected with the feed point K, the plurality of second ends of the gating switch are connected with the ends of the tuning units in a one-to-one correspondence manner, the second ends of the tuning units are connected with the feed source S1, and the gating switch can selectively conduct the feed source S1 and any tuning unit so that the tuning circuit M works in different resonant frequency bands. It should be noted that the gating switch and the tuning unit are not limited to specific distribution positions and volumes, and these may be determined according to design requirements when the antenna device is actually applied to an electronic device.

In one embodiment, there is also provided an electronic device 100 comprising the above-described wire arrangement. For explanation of the constituent parts of the antenna device, reference may be made to the description of the above embodiments, and the description thereof will not be repeated here. The electronic equipment with the antenna device realizes a plurality of resonance modes under the structure of the radiator and the parasitic branches, supports WiFi7 and UWB frequency bands and realizes broadband design.

In one embodiment, as shown in fig. 11, the metal floor is at least part of a midplane 110, a circuit board (not shown) in the electronic device 100.

The circuit board may be a PCB (Printed CircuitBoard ) that can be provided in the electronic device 100, and may be disposed separately from the middle board 110 of the electronic device 100 or may be disposed on the middle board 110. As can be seen from the description of the antenna device in the above embodiments, the electronic device 100 with the antenna device can support at least the first frequency band, the second frequency band, and the third frequency band, and improve the communication performance with a small headroom. For example, when the frequency range formed by the first frequency band, the second frequency band and the third frequency band covers at least one frequency band of the UWB and a plurality of frequency bands of the WiFi7, full-band coverage of the WiFi7 and ultra-wideband communication of the UWB can be achieved, and communication performance can be effectively improved under the design of a miniaturized antenna.

In one embodiment, as shown in fig. 11, the electronic device 100 includes a midplane 110, and a bezel 120 surrounding the midplane 110.

The frame 120 includes a top frame 121, a first side frame 122, a bottom frame 123, and a second side frame 124, which are sequentially connected end to end; the radiator and parasitic branches are disposed at either the first side frame 122 or the second side frame 124.

Optionally, the radiator and the parasitic branches may be disposed on the first side frame 122, where the first side frame 122 faces the left frame and/or the right frame under the viewing angle of the screen when the mobile phone is held by the vertical screen. The radiator and the parasitic branches can be arranged close to the top frame 121, so that loss during holding of the vertical screen is reduced, and communication quality is ensured.

As further illustrated in fig. 12, for example, the electronic device 100 is illustrated as a mobile phone 101, and in particular, as illustrated in fig. 12, the mobile phone 101 may include a memory 21 (which optionally includes one or more computer readable storage media), a processing circuit 22, a peripheral interface 23, a radio frequency system 24, and an input/output (I/O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will appreciate that the handset 101 shown in fig. 12 is not limiting of the handset and may include more or fewer components than shown, or may combine certain components, or may be arranged in a different arrangement of components. The various components shown in fig. 12 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 21 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 21 include an operating system 211, a communication module (or instruction set) 212, a Global Positioning System (GPS) module (or instruction set) 213, and the like.

The processing circuitry 22 and other control circuitry, such as control circuitry in the radio frequency system 24, may be used to control the operation of the handset 101. The processing circuitry 22 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 22 may be configured to implement a control algorithm that controls the use of the antenna in the handset 101. The processing circuitry 22 may also issue control commands or the like for controlling various switches, tuning circuits, etc. in the radio frequency system 24.

The I/O subsystem 26 couples input/output peripheral devices on the handset 101, such as keypads and other input control devices, to the peripheral interface 23. The I/O subsystem 26 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 101 by supplying commands via the I/O subsystem 26, and may use the output resources of the I/O subsystem 26 to receive status information and other outputs from the handset 101. For example, a user may activate the handset or deactivate the handset by pressing button 261.

The radio frequency system 24 may comprise an antenna arrangement as in any of the previous embodiments.

Alternatively, the communication control unit may be the processing circuit 22 described above.

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 (11)

1. An antenna device, comprising:

a metal floor;

a feed source;

the radiator is provided with a first grounding point and a feed point connected with the feed source, and is used for being coupled with the metal floor under the excitation of the feed source;

a parasitic branch having a second ground point, and a gap between the parasitic branch and the radiator;

the tuning circuit is respectively connected with the feed source and the feed point, is used for supporting the radiator and the parasitic branch to work in a first resonance mode so as to support a first frequency band, and is also used for adjusting the radiator to support a second frequency band and a third frequency band, wherein the first frequency band, the second frequency band and the third frequency band are different;

the first resonance mode is a mode that excitation current provided by the feed source resonates between a first target end and a second target end, the first target end is one end, far away from a parasitic branch, of the radiator, and the second target end is one end, far away from the radiator, of the parasitic branch.

2. The antenna device of claim 1, wherein the radiator has a first end and a second end, the first ground point being at the first end and the feed point being at the second end; the tuning circuit is used for supporting the radiator to work in a second resonance mode so as to support the second frequency band, and the second resonance mode is a circulation mode from the first grounding point to the feed point;

the tuning circuit is further configured to support the radiator to operate in a third resonant mode to support the third frequency band, where the third resonant mode is a half-loop mode from the first ground point to the feed point.

3. The antenna device of claim 2, wherein the parasitic stub has a coupling end and a first free end, wherein a gap is provided between the first end of the radiator and the coupling end of the parasitic stub, and wherein the second ground point is located at the coupling end; the first resonant mode includes a half-loop mode of the feed point to the first ground point and a quarter-wavelength mode of the second ground point to the first free end.

4. The antenna device of claim 2, wherein the parasitic stub has a ground end and a second free end, the second end of the radiator and the second free end of the parasitic stub having a gap therebetween, the second ground point being at the ground end; the first resonant mode includes a loop current mode from the first ground point to the second ground point.

5. The antenna assembly of claim 4 wherein the tuning circuit is further configured to support the radiator and the parasitic stub to operate together in a fourth resonant mode to support a fourth frequency band, the fourth resonant mode being a half-loop mode of the first ground point to the second ground point;

the fourth frequency band is different from the first frequency band, the second frequency band and the third frequency band.

6. The antenna device according to any of claims 2-5, wherein the parasitic branches are two, wherein one of the parasitic branches has a coupling end and a first free end, wherein a gap is provided between the first end of the radiator and the coupling end of the parasitic branch, and wherein the second ground point of the one of the parasitic branches is located at the coupling end;

the other parasitic branch is provided with a grounding end and a second free end, a gap is arranged between the second end of the radiator and the second free end of the parasitic branch, and the second grounding point of the other parasitic branch is positioned at the grounding end.

7. The antenna arrangement according to any of claims 1-5, characterized in that the frequency range constituted by the first frequency band, the second frequency band and the third frequency band covers a plurality of frequency bands of WiFi7 and at least one UWB frequency band.

8. The antenna device according to claim 7, wherein a frequency band range constituted by the first frequency band, the second frequency band, and the third frequency band covers at least one of a UWB CH5 frequency band and a UWB CH9 frequency band.

9. An electronic device comprising an antenna arrangement as claimed in any one of claims 1-8.

10. The electronic device of claim 9, wherein the metal floor is at least part of a midplane, a circuit board in the electronic device.

11. The electronic device of claim 9, wherein the electronic device comprises a top bezel, a first side bezel, a bottom bezel, and a second side bezel connected end-to-end in sequence; the radiator and the parasitic branches are arranged on the first side frame or the second side frame.