CN116315609A - Reconfigurable antenna structure, switching method and electronic equipment - Google Patents

Abstract

The embodiment of the application discloses a reconfigurable antenna structure, a switching method and electronic equipment, wherein the reconfigurable antenna structure comprises a first radiation unit which is arranged on the surface of a supporting body; the plurality of second radiation units are arranged on the surface of the support body; each switch unit is corresponding to one second radiation unit and is used for controlling the connection or disconnection between each second radiation unit and the first radiation unit so as to form a coupling passage or an open circuit; the switch units in on states in the switch units are different, and form a first antenna structure or a second antenna structure, wherein the radiation patterns of the first antenna structure and the second antenna structure are different.

Description

Reconfigurable antenna structure, switching method and electronic equipment

Technical Field

The present disclosure relates to the field of antenna technologies, and in particular, to a reconfigurable antenna structure, a switching method, and an electronic device.

Background

With the development of mobile terminal electronic products, the requirements on the wireless communication performance are higher and higher, but the antenna performance is more and more affected due to the light and thin design and metal appearance requirements of the products. And because of the compression of the electronic product space of the mobile terminal and the complex structural environment around the antenna, the radiation pattern also becomes more directional, resulting in poor omni-directional coverage of the antenna.

The antenna in the related art is usually a passive device, and after the antenna is designed, the radiation direction and all performance parameters of the antenna are fixed, and if more dead zones exist on the radiation pattern, the overall wireless coverage and use experience of the electronic product can be greatly influenced.

Disclosure of Invention

Based on the problems existing in the related art, the embodiment of the application provides a reconfigurable antenna structure, a switching method and electronic equipment.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides a reconfigurable antenna structure, which comprises:

the first radiation unit is arranged on the surface of the support body;

the plurality of second radiation units are arranged on the surface of the support body;

each switch unit is corresponding to one second radiation unit and is used for controlling the connection or disconnection between each second radiation unit and the first radiation unit so as to form a coupling passage or an open circuit;

the switch units in on states in the switch units are different, and form a first antenna structure or a second antenna structure, wherein the radiation patterns of the first antenna structure and the second antenna structure are different.

In some embodiments, the second radiating elements include a first end and a second end, and if the corresponding switch element of any second radiating element is turned on, the first end of the second radiating element is communicated with the first radiating element, and the second end is communicated with the ground;

the reconfigurable antenna structure further comprises a feed unit, a first end of the feed unit is communicated with the first radiation unit, and a second end of the feed unit is connected with a feeder line in the grounding end.

In some embodiments, in the first antenna structure, a switch unit corresponding to any one of the second radiating units except the feed unit is in a conducting state;

and the switch units corresponding to the second radiation units at two sides of the feeding unit in the second antenna structure are in a conducting state.

In some embodiments, the first radiating element comprises a plurality of first radiating sub-elements connected in series, and the switching element comprises at least a first switching element; the two adjacent first radiation subunits are connected or disconnected through a first switch unit in the switch units to form a coupling passage or an open circuit;

in the second antenna structure, one second radiating element at two sides of the feed unit is communicated with the first radiating element, and a first switch unit between the first radiating sub-elements connected with the two second radiating elements is in a conducting state.

In some embodiments, the second antenna structure comprises a plurality of second antenna substructures;

in the different second antenna substructures, at least one second radiation unit which is communicated with the first radiation unit is different from the two sides of the feed unit; wherein the antenna resonance frequency of each antenna substructure is different.

In some embodiments, the support includes at least a first edge and a plurality of second edges, the first edge being connected to the plurality of second edges, respectively;

the first radiating units are arranged on the surface of the first side, and each second radiating unit is arranged on the surface of one second side.

In some embodiments, the reconfigurable antenna structure is applied to an electronic device, the support constituting a vent of the electronic device;

the spacing between two adjacent second edges is the same or different in the extending direction of the first edges.

The embodiment of the application further provides a switching method of the reconfigurable antenna structure, which is applied to the reconfigurable antenna structure;

the method comprises the following steps:

acquiring wireless connection parameters of the reconfigurable antenna structure under the current antenna structure; the current antenna structure is the first antenna structure or the second antenna structure;

and controlling the on-off state of a second radiation unit in the reconfigurable antenna structure in response to the wireless connection parameter meeting a switching condition so as to switch the radiation field type of the reconfigurable antenna structure.

In some embodiments, the wireless connection parameters include at least an antenna resonant frequency; the switch unit at least comprises a first switch unit, the first radiation unit is formed by sequentially connecting a plurality of first radiation subunits in series, and two adjacent first radiation subunits are communicated or disconnected through the first switch unit;

in response to the structure of the reconfigurable antenna structure being a second antenna structure, the method further comprises:

acquiring the current antenna resonant frequency of the second antenna structure;

and controlling the on-off state of a second radiating unit and the on-off state of a first radiating subunit in the reconfigurable antenna structure to switch the structure of the second antenna structure and the antenna resonance frequency in response to the antenna resonance frequency meeting a frequency switching condition.

The embodiment of the application further provides electronic equipment, which at least comprises the reconfigurable antenna structure, the controller and the support body;

the reconfigurable antenna structure comprises a first radiating element, a plurality of second radiating elements and a plurality of switch elements; the reconfigurable antenna structure is arranged on the surface of the support body;

the controller is respectively connected with each switch unit, each switch unit corresponds to one second radiation unit, and each switch unit is used for controlling each second radiation unit to be communicated with or disconnected from the first radiation unit so as to form a coupling passage or an open circuit;

wherein, the switch units in the on state in the switch units are different to form a first antenna structure or a second antenna structure; the first antenna structure is different from the second antenna structure in radiation pattern.

According to the reconfigurable antenna structure, the switching method and the electronic device, through the first radiating units, the plurality of second radiating units and the switch units corresponding to the second radiating units, which are arranged on the surface of the supporting body, the connection or disconnection between each second radiating unit and the first radiating unit is controlled, and when the switch units in the on state in the plurality of switch units are different, the first antenna structure or the second antenna structure with different radiation patterns can be formed. Therefore, the reconfigurable antenna structure provided by the embodiment of the application can realize the switching between different radiation patterns according to the on states of different switch units, each radiation pattern has different radiation directions, the adjustment of the radiation field can be carried out according to the intensity change of wireless signals under different environments, the resonance state of the reconfigurable antenna structure is changed, the better radiation direction of the signals is selected, the reconfigurable antenna structure always works in the optimal transmitting or receiving state under any environment, and the antenna connection characteristic of the reconfigurable antenna structure is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the technical aspects of the application.

Fig. 1 is a schematic structural diagram of a reconfigurable antenna structure according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a reconfigurable antenna structure according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a reconfigurable antenna structure according to an embodiment of the present application;

fig. 4 is a far field radiation pattern of a reconfigurable antenna structure provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of a reconfigurable antenna structure according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a reconfigurable antenna structure according to an embodiment of the present application;

FIG. 7 is a schematic view of a structure of a support provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 9 is an alternative flow chart of a switching method of a reconfigurable antenna structure according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of two antenna structures according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a switching device with a reconfigurable antenna structure according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings, and the described embodiments should not be construed as limiting the present application, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.

In the following description, the terms "first", "second", "third" and the like are merely used to distinguish similar objects and do not represent a particular ordering of the objects, it being understood that the "first", "second", "third" may be interchanged with a particular order or sequence, as permitted, to enable embodiments of the application described herein to be practiced otherwise than as illustrated or described herein.

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 is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.

In order to solve the problems of the related art, the embodiments of the present application provide a new reconfigurable antenna structure, which controls the connection or disconnection between each second radiating element and the first radiating element by the first radiating element, the plurality of second radiating elements and the switch element corresponding to each second radiating element, which are disposed on the surface of the support body, and when the switch elements in the on state in the plurality of switch elements are different, the first antenna structure or the second antenna structure with different radiation patterns can be formed. Therefore, the reconfigurable antenna structure provided by the embodiment of the application can realize the switching among different radiation patterns according to the switching of the switch, each radiation pattern has different radiation directions, the adjustment of the radiation field can be carried out according to the intensity change of wireless signals under different environments, the resonance state of the reconfigurable antenna structure is changed, the better radiation direction of the signals is selected, the reconfigurable antenna structure always works in the optimal transmitting or receiving state under any environment, and the antenna connection characteristic of the reconfigurable antenna structure is improved.

Based on the above problems, the present application provides a reconfigurable antenna structure, which can be applied to an electronic device. As shown in fig. 1, fig. 1 is a schematic structural diagram of a reconfigurable antenna structure according to an embodiment of the present application. The reconfigurable antenna structure 10 includes at least a first radiating element 101, a plurality of second radiating elements 102, and a switching element 103 corresponding to each of the second radiating elements 102. Each switch unit 103 corresponds to one second radiation unit 102, and each switch unit is used for controlling connection or disconnection between each second radiation unit 102 and the first radiation unit 101 so as to form a coupling path or a disconnection.

Here, including the supporter in the structure of electronic equipment, reconfigurable antenna structure sets up in the supporter surface, has utilized electronic equipment's existing structure, need not to set up dedicated antenna space in electronic equipment, has reduced space occupation, has saved the cost.

In the present embodiment, the switching states of the switching unit 103 include an off state and an on state. Each switch unit 103 defaults to an off state, and the switch units in the on state are different from each other, so that a coupling path or an open circuit is formed between the second radiation unit 102 and the first radiation unit 101, and a first antenna structure or a second antenna structure is formed, and the radiation patterns of the first antenna structure and the second antenna structure are different.

For example, fig. 2 is a schematic structural diagram of a reconfigurable antenna structure provided in the embodiment of the present application, as shown in fig. 2, a broken line indicates an open circuit, a solid line indicates a path, a broken line frame indicates that a switch unit is in an open state, a solid line frame indicates that the switch unit is in a closed state, switch units 103 corresponding to two second radiating units 102 in fig. 2 are in a conductive state, and other switch units are all in an open state, so that the two conductive second radiating units and the first radiating unit form a coupling path to form the first antenna structure. Here, the first antenna structure may be an inverted-F antenna, where the second radiating elements are connected to the ground terminal 104, and one of the two conductive second radiating elements is used as a feeding element. In another embodiment, the feed unit is a separate structure, not being an element of the second radiating element, which is always in a connection conducting state with the first radiating element.

In some embodiments, the second radiating element and the first radiating element in the reconfigurable antenna structure, which do not form a coupling path, may be used as a metal line for near-field floating (floating) of the antenna, which has little influence on the impedance characteristics and radiation characteristics of the antenna.

In some embodiments, fig. 3 is a schematic structural diagram of a reconfigurable antenna structure provided in the embodiments of the present application, as shown in fig. 3, the second radiating elements are all connected to the ground terminal 104, the switch units 103 corresponding to the three second radiating elements 102 are in on states, and the other switch units are in off states, so that the on three second radiating elements and the first radiating element form a coupling path to form the second antenna structure. The second antenna structure can be a loop antenna, three second radiating units are conducted, the second radiating unit in the middle is used as a feed unit, and the second radiating units communicated with the two sides are connected with the grounding end.

In another embodiment, the switch units 103 corresponding to the two second radiating units 102 are in on states, and the other switch units are in off states, so that the two on second radiating units and the first radiating unit form a coupling path to form a second antenna structure. The second antenna structure can be a loop antenna, the loop antenna is positioned in the middle and used as a feed unit, and the second radiating units communicated with the two sides are connected with the grounding end.

In some embodiments, fig. 4 is a far-field radiation pattern of a reconfigurable antenna structure provided in an embodiment of the present application, where, as shown in fig. 4, a and b diagrams represent far-field radiation patterns of a first antenna structure in different directions, and c and d diagrams represent far-field radiation patterns of a second antenna structure in different directions. The plane in fig. 4 is a ground terminal to which a reconfigurable antenna structure is connected, and the shades of the colors in the figure are used to characterize the power gain (dBi) of the antenna, which is used to measure the ability of the antenna to transmit and receive signals in a specific direction. As shown in fig. 4, the radiation directions and coverage areas of far-field radiation patterns of the first antenna structure and the second antenna structure are different, and by the reconfigurable antenna structure provided by the embodiment of the application, the adjustment of the resonance mode and the radiation field of the reconfigurable antenna structure can be realized, so that the reconfigurable antenna structure always has a better radiation direction of a signal, and the reconfigurable antenna structure always works in an optimal transmitting or receiving state in any environment, and has optimal antenna connection characteristics.

In some embodiments, the first and second radiating elements 101, 102 may be metal structures such as planar metal sheets.

In some embodiments, the switching unit 103 may be a diode, a triode, a planar field effect transistor (field effect transistor; FET), a metal oxide semiconductor (metal oxide semiconductor; MOS) field effect transistor, or a combination thereof, to which embodiments of the present application are not limited.

In some embodiments, fig. 5 is a schematic structural diagram of a reconfigurable antenna structure provided in the embodiments of the present application, as shown in fig. 5, the second radiating element 102 includes a first end 102-1 and a second end 102-2, and if a corresponding switch element 103 of any second radiating element 102 is turned on, the first end 102-1 of the second radiating element 102 is communicated with the first radiating element 101, and the second end 102-2 is communicated with the ground terminal 104.

In some embodiments, the reconfigurable antenna structure further comprises a feed unit 105, a first end of the feed unit 105 being in communication with the first radiating element 101, a second end of the feed unit 105 being connected to a feed line in a ground. The feeder line refers to a connecting line which can transmit signal power sent by a transmitter to an input end of a transmitting antenna with minimum loss, or transmit signals received by the antenna to an input end of a receiver with minimum loss, and wireless signals received or sent by a reconfigurable antenna structure are transmitted in the feeder line.

It should be noted that, in another embodiment, the feeding unit 105 is always connected to the first radiating unit 101, and the feeding unit 105 includes a switch unit, where the corresponding switch unit is always in an on state, and the corresponding switch unit of the feeding unit 105 is omitted in the figure for clarity of illustration of the position of the feeding unit.

In some embodiments, the grounding terminal 104 may be any structure of the electronic device having a grounding potential, for example, a housing, a motherboard, or other components of the electronic device having a large amount of metal, so that the grounding terminal does not need to be separately provided, and space of the electronic device is saved.

In some embodiments, the first antenna structure may be an inverted-F antenna, and thus, in the first antenna structure, the switch unit 103 corresponding to any one of the second radiating units 102 except the feeding unit 105 is in a conductive state. Here, the second radiating element in the first antenna structure may be turned on according to a requirement, so as to change wireless performance such as signal receiving strength of the first antenna structure, so that the wireless performance of the electronic device is always kept in an optimal state.

In some embodiments, the second antenna structure may be a loop antenna, so in the second antenna structure, the switch unit 103 corresponding to each of the second radiating units 102 on both sides of the feeding unit 105 is in an on state.

In some embodiments, fig. 6 is a schematic structural diagram of a reconfigurable antenna structure provided in the embodiments of the present application, as shown in fig. 6, the first radiating element 101 includes a plurality of first radiating sub-elements 1011 connected in series, the switch element 103 includes at least a first switch element 1031 and a second switch element 1032, the first switch element 1031 is used for controlling the connection or disconnection between the first radiating element 101 and the second radiating element 102, and the second switch element 1032 is used for controlling the connection or disconnection between the second radiating element 102. The adjacent two first radiating sub-units 1011 are connected or disconnected by the first switching unit 1031 of the switching units to form a coupling path or an opening.

In some embodiments, as shown in fig. 6, in the second antenna structure, each of the second radiating elements 102 on two sides of the feeding element 105 is in a communication state with the first radiating element 101, that is, the first switching element 1031 and the second switching element 1032 corresponding to each of the second radiating elements 102 on two sides of the feeding element 105 are in a conducting state, and the first switching element 1031 between the first radiating sub-elements 1011 connected to the two second radiating elements 102 is in a conducting state, so as to form a loop antenna.

In some embodiments, the second antenna structure includes a plurality of second antenna sub-structures, each antenna sub-structure having a different antenna resonant frequency. In the different second antenna sub-structures, at least one second radiating element 102 communicating with the first radiating element 101 on both sides of the feeding element 105 is different, that is, in the two different second antenna sub-structures, at least one second radiating element 102 is arranged in the two second radiating elements 102 communicating with the first radiating element 101, so as to change the aperture of the loop antenna, and the smaller the aperture of the antenna is, the highest the antenna resonant frequency is.

In the embodiment of the application, the control of the antenna resonance mode and the working frequency, such as different modes respectively resonating in an inverted-F antenna and a Loop (Loop) antenna, can be realized through the matching and the control of the switch unit in the reconfigurable antenna structure. The inverted F-shaped antenna resonates in a 1/4 wavelength mode and the grounding surface to form an asymmetric half-wave oscillator form for radiation, and the Loop antenna resonates in 1/2, 2/2 and 3/2 wavelength modes, so that the antenna has better bandwidth characteristics. The change of the resonant modes of the two antenna structures is utilized to realize the adjustment on the radiation pattern of the reconfigurable antenna structure.

In some embodiments, fig. 7 is a schematic structural diagram of a support provided in the embodiments of the present application, where the reconfigurable antenna is disposed on a surface of the support, the support includes at least a first edge 701 and a plurality of second edges 702, the first edge 701 is connected to the plurality of second edges 702, the first radiation unit is disposed on a surface of the first edge 701, and each second radiation unit is disposed on a surface of one second edge 702.

In some embodiments, the reconfigurable antenna structure is applied to an electronic device, and the support forms a vent for the electronic device, as shown in fig. 7. The spacing between adjacent second sides in the direction of extension of the first side 701 may be the same or different and may be determined by the requirements of the electronics vents.

Based on the reconfigurable antenna structure, the embodiment of the application further provides electronic equipment. Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 8, where the electronic device includes at least a reconfigurable antenna structure 801, a controller 802, and a support (not shown in fig. 8).

Wherein the reconfigurable antenna structure 801 comprises a first radiating element 101, a plurality of second radiating elements 102, and a plurality of switching elements 103; the reconfigurable antenna structure 801 is disposed on the surface of the support. The controller 802 is connected to each switch unit 103, where each switch unit 103 corresponds to one second radiation unit 102, and each switch unit 103 is used to control each second radiation unit 102 to connect or disconnect from the first radiation unit 101, so as to form a coupling path or an open circuit. Among the plurality of switch units 103, the switch units in the on state are different, and form a first antenna structure or a second antenna structure, where the radiation patterns of the first antenna structure and the second antenna structure are different.

In some embodiments, the controller may be a control chip, a single-chip microcomputer, or the like of the electronic device.

Based on the above-mentioned reconfigurable antenna structure, the embodiment of the present application further provides a switching method of the reconfigurable antenna structure, and an execution subject of the method may be a controller of an electronic device. As shown in fig. 9, fig. 9 is an optional flowchart of a switching method of a reconfigurable antenna structure provided in an embodiment of the present application, where the switching method of the reconfigurable antenna structure provided in the embodiment of the present application is implemented through step S901 and step S902.

Step S901, acquiring wireless connection parameters of the reconfigurable antenna structure under the current antenna structure; the current antenna structure is the first antenna structure or the second antenna structure.

In the embodiment of the application, the wireless connection parameter may refer to an indication (Received Signal Strength Indicator, RSSI) of the strength of a signal received by a wireless network card in the electronic device, which is used to characterize the signal receiving strength between the transmitter and the receiver.

In this embodiment of the present application, signal receiving intensities of the reconfigurable antenna structure under different antenna structures may be obtained, for example, based on the foregoing embodiment, the current reconfigurable antenna structure may be a first antenna structure and a second antenna structure, and at this time, signal receiving intensities of the electronic device under different antenna structures may be obtained.

And step 902, controlling the on-off state of a second radiation unit in the reconfigurable antenna structure in response to the wireless connection parameter meeting a switching condition, so as to switch the radiation field type of the reconfigurable antenna structure.

In the embodiment of the application, according to the signal receiving intensity of the electronic device under different antenna structures, the antenna structure with higher signal receiving intensity can be selected as the structure for currently receiving or transmitting the wireless signal, so that the reconfigurable antenna structure and the electronic device can maintain the optimal performance.

In some embodiments, when the reconfigurable antenna structure is in one of the first antenna structure or the second antenna structure, if the reconfigurable antenna structure is in the first antenna structure with a first signal reception intensity smaller than a second signal reception intensity of the second antenna structure, the state of the switch unit is controlled so that the reconfigurable antenna structure is in the antenna structure with a higher signal reception intensity, so that the signal reception intensity of the transmitted and received wireless signals is higher.

In some embodiments, it may also be determined whether the structure and radiation pattern of the reconfigurable antenna structure need to be changed according to the current signal reception strength of the reconfigurable antenna structure and the preset signal reception strength.

First, in response to the reconfigurable antenna structure being in the first antenna structure or the second antenna structure, the first signal receiving strength corresponding to the first antenna structure or the second signal receiving strength corresponding to the second antenna structure is compared with the preset signal receiving strength. The preset signal receiving strength can be set by a technician, and when the current signal receiving strength of the electronic equipment is smaller than the preset signal receiving strength, it is indicated that the current receiving and transmitting of the wireless signal of the electronic equipment does not meet the use requirement of the electronic equipment, so that the antenna structure of the reconfigurable antenna structure needs to be switched.

In the embodiment of the application, if the reconfigurable antenna structure is in the first antenna structure, comparing the first signal receiving strength with the preset signal receiving strength; and if the reconfigurable antenna structure is in the second antenna structure, comparing the second signal receiving intensity with the preset signal receiving intensity.

And secondly, responding to the fact that the first signal receiving intensity or the second signal receiving intensity is larger than the preset signal receiving intensity, and keeping the current working state of the reconfigurable antenna structure. That is, if the reconfigurable antenna structure is in the first antenna structure and the current first signal receiving strength is greater than the preset signal receiving strength, which indicates that the current receiving and transmitting of the wireless signal of the electronic device meets the use requirement of the electronic device, the current working state is kept unchanged. If the reconfigurable antenna structure is in the first antenna structure and the current first signal receiving intensity is smaller than the preset signal receiving intensity, the current wireless signal receiving and transmitting of the electronic equipment is not in accordance with the use requirement of the electronic equipment, at the moment, the second signal receiving intensity of the reconfigurable antenna structure in the second antenna structure can be obtained, and the working state with larger signal receiving intensity is selected as the current working state of the reconfigurable antenna structure by comparing the first signal receiving intensity with the second signal receiving intensity.

And finally, comparing the current first signal receiving intensity with the second signal receiving intensity in response to the fact that the first signal receiving intensity or the second signal receiving intensity is smaller than the preset signal receiving intensity, and taking the working state with the maximum signal receiving intensity as the current antenna structure of the reconfigurable antenna structure in the first antenna structure and the second antenna structure.

In the embodiment of the application, the detection and comparison of the wireless signal receiving intensities of different antenna structures of the electronic equipment can be performed in real time, so that the wireless performance of the electronic equipment can be always kept in an optimal state; or a time period is set, and signal receiving intensities corresponding to different antenna structures in the current electronic equipment are detected every time period passes, so that the calculation amount of the controller is reduced while the wireless performance of the electronic equipment is maintained.

In some embodiments, the wireless connection parameters further include an antenna resonant frequency. Based on the foregoing embodiment, the switch unit includes at least a first switch unit, where the first radiation unit is formed by sequentially connecting a plurality of first radiation sub-units in series, and two adjacent first radiation sub-units are connected or disconnected through the first switch unit.

When the structure of the reconfigurable antenna structure is the second antenna structure, that is, the loop antenna, the switching method of the reconfigurable antenna structure provided in the embodiment of the application may further include the following steps:

step S1, acquiring the current antenna resonance frequency of the second antenna structure.

In the embodiment of the application, the reconfigurable antenna can form multiple loop antennas with different apertures. When the current reconfigurable antenna structure is in the second antenna structure, namely the loop antenna, the antenna resonant frequency under the current loop antenna aperture is obtained.

And step S2, controlling the on-off state of a second radiating unit and the on-off state of a first radiating subunit in the reconfigurable antenna structure in response to the antenna resonant frequency meeting the frequency switching condition, and switching the structure of the second antenna structure and the antenna resonant frequency.

In this embodiment of the present application, the resonant frequencies corresponding to the loop antennas with different apertures are different, and according to the frequency of the wireless signal, the on-off state of the second radiating element and the on-off state of the first radiating subunit in the reconfigurable antenna structure can be controlled, so that the second radiating element communicated with two sides of the feeding unit is changed, and the aperture of the second antenna structure is changed, so that the structure of the second antenna structure and the resonant frequency of the antenna are switched, and wireless signals with different frequencies are received.

The embodiment of the application further provides an application of the switching method of the reconfigurable antenna structure in an actual scene.

According to the reconfigurable antenna structure antenna, the antenna wiring is performed on the outer surface of the electronic equipment 10 side sharing air inlet and outlet structure 11, and the controller is added, so that the antenna resonant mode, the resonant frequency and the radiation direction can be dynamically adjusted, and the intelligent antenna application is realized while the antenna performance is improved. Antenna structure design is carried out based on the structure of the electronic equipment, more flexibility can be brought to antenna design, better performance and intelligent function are achieved, more space structures are utilized, and a switching device is added, as shown in fig. 10, and fig. 10 is a schematic structural diagram of the electronic equipment provided by the embodiment of the application.

According to the embodiment of the application, the control of the antenna resonance mode and the working frequency can be realized through the matching and the control of the switch unit in the reconfigurable antenna structure, for example, different modes of resonance in an inverted F-shaped antenna and a Loop (Loop) antenna are realized. The inverted F-shaped antenna resonates in a mode of 1/4 wavelength and the grounding surface to form an asymmetric half-wave oscillator for radiation, and the Loop antenna resonates in a mode of 1/2, 2/2 and 3/2 wavelength, so that the antenna has better bandwidth characteristics. The adjustment on the radiation pattern is realized by utilizing the changes of the resonance modes of the two antennas. Fig. 11 is a schematic structural view of two antenna structures provided in the embodiments of the present application, as shown in fig. 11, fig. 11 a is a schematic structural view of an inverted F antenna, and fig. b is a schematic structural view of a loop antenna, where a dotted line indicates an open circuit, a solid line indicates a path, a dotted line frame indicates an open state of a switch unit, and a solid line frame indicates a closed state of the switch unit.

As shown in fig. 11, in a, the controller 112 controls the second radiating element other than the feeding element 111 to be turned on to form an inverted-F antenna. The conducted second radiating elements are different, the formed inverted-F antenna is different in structure, and the wireless signal receiving and transmitting capacities are different. The controller 112 controls the conduction of one second radiating element on each side except the feeding element 111 in the b-diagram to form a loop antenna. The conducted second radiating elements are different, the formed loop antenna is different in structure, different in resonant frequency and different in wireless signal receiving and transmitting capability.

In the embodiment of the application, the inverted-F antenna (IFA) radiation is uniformly distributed in all directions of the ground plane, and is closer to the omnidirectional radiation, and the radiation of the Loop antenna (Loop) is relatively concentrated in the front-rear direction of the ground plane, so that the Loop antenna has higher peak gain. Switching between IFA and resonant modes effectively adjusts the antenna radiation direction. In addition, the reconfigurable antenna structure provided by the embodiment of the application can also realize frequency tuning, realize dynamic adjustment of the working bandwidth and further optimize the antenna performance.

According to the embodiment of the application, the control device is added to the antenna design to enable the resonance mode of the reconfigurable antenna to be controllably changed, so that the radiation direction of the antenna is adjustable, and the far-field radiation pattern can be effectively adjusted; the antenna aperture can be changed according to the channel or frequency information of the real-time working state so as to adjust the resonant frequency and improve the antenna performance on the real-time working frequency band; by changing the antenna structure, the reconfigurable antenna structure is switched between the inverted F-shaped antenna and the annular antenna, so that the radiation field type is greatly adjusted, the radiation field type is effectively changed, and the performance is improved; according to the embodiment of the application, a plurality of groups of different radiation patterns are designed on a single antenna, the automatic adjustment of an antenna structure is realized through the signal quality detection and control of electronic equipment, the design of an intelligent antenna system with optimal performance is always kept, and the wireless connection performance is improved in a complex environment; through the combined application of a plurality of switch groups in the antenna, various changes including various changes of the antenna resonant modes and resonant frequencies are realized, and the characteristics and parameters of the antenna can be configured in various flexible modes according to communication requirements.

According to the reconfigurable antenna structure, the switching method and the electronic equipment, the antenna structure, the resonant mode and the working aperture can be dynamically adjusted, the far-field radiation direction and the working frequency of the antenna can be effectively controlled to optimize impedance matching, the intelligent antenna system is matched to be applied, the antenna characteristics can be automatically controlled to adjust the working bandwidth and the radiation direction under different environments, the antenna can always work on the radiation mode with optimal signal quality, and the coverage capacity and the communication performance of the wireless system are improved.

Based on the foregoing embodiments, the present embodiment provides a switching device of a reconfigurable antenna structure, and fig. 12 is a schematic structural diagram of the switching device of the reconfigurable antenna structure provided in the embodiment of the present application, as shown in fig. 12, the device 120 includes an obtaining module 121 and a control module 122.

The acquiring module 121 is configured to acquire a wireless connection parameter of the reconfigurable antenna structure under a current antenna structure; the current antenna structure is the first antenna structure or the second antenna structure; and the control module 122 is configured to control the on-off state of the second radiation unit in the reconfigurable antenna structure in response to the wireless connection parameter meeting a switching condition, so as to switch the radiation pattern of the reconfigurable antenna structure.

In some embodiments, the wireless connection parameters include at least an antenna resonant frequency; the switch unit at least comprises a first switch unit, the first radiation unit is formed by sequentially connecting a plurality of first radiation subunits in series, and two adjacent first radiation subunits are communicated or disconnected through the first switch unit; in response to the reconfigurable antenna structure being a second antenna structure, the apparatus further comprises: the first acquisition module is used for acquiring the current antenna resonance frequency of the second antenna structure; and the first control module is used for controlling the on-off state of the second radiating unit and the on-off state of the first radiating subunit in the reconfigurable antenna structure to switch the structure of the second antenna structure and the antenna resonance frequency in response to the antenna resonance frequency meeting the frequency switching condition.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely an embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application.

Claims (10)

1. A reconfigurable antenna structure comprising:

the first radiation unit is arranged on the surface of the support body;

the plurality of second radiation units are arranged on the surface of the support body;

each switch unit is corresponding to one second radiation unit and is used for controlling the connection or disconnection between each second radiation unit and the first radiation unit so as to form a coupling passage or an open circuit;

the switch units in on states in the switch units are different, and form a first antenna structure or a second antenna structure, wherein the radiation patterns of the first antenna structure and the second antenna structure are different.

2. The reconfigurable antenna structure of claim 1, the second radiating elements including a first end and a second end, the first end of the second radiating element being in communication with the first radiating element and the second end being in communication with a ground terminal if a corresponding switching element of any of the second radiating elements is conductive;

the reconfigurable antenna structure further comprises a feed unit, a first end of the feed unit is communicated with the first radiation unit, and a second end of the feed unit is connected with a feeder line in the grounding end.

3. The reconfigurable antenna structure of claim 2,

in the first antenna structure, any switch unit corresponding to the second radiation unit except the feed unit is in a conducting state;

and the switch units corresponding to the second radiation units at two sides of the feeding unit in the second antenna structure are in a conducting state.

4. The reconfigurable antenna structure of claim 2, the first radiating element comprising a plurality of first radiating sub-elements connected in series, the switching element comprising at least a first switching element; the two adjacent first radiation subunits are connected or disconnected through a first switch unit in the switch units to form a coupling passage or an open circuit;

in the second antenna structure, one second radiating element at two sides of the feed unit is communicated with the first radiating element, and a first switch unit between the first radiating sub-elements connected with the two second radiating elements is in a conducting state.

5. The reconfigurable antenna structure of claim 4, the second antenna structure comprising a plurality of second antenna substructures;

in the different second antenna substructures, at least one second radiation unit which is communicated with the first radiation unit is different from the two sides of the feed unit; wherein the antenna resonance frequency of each antenna substructure is different.

6. The reconfigurable antenna structure of any of claims 1-5, the support comprising at least a first side and a plurality of second sides, the first side being connected to the plurality of second sides, respectively;

the first radiating units are arranged on the surface of the first side, and each second radiating unit is arranged on the surface of one second side.

7. The reconfigurable antenna structure of claim 6 applied to an electronic device, the support constituting a vent for the electronic device;

the spacing between two adjacent second edges is the same or different in the extending direction of the first edges.

8. A switching method of a reconfigurable antenna structure, applied to the reconfigurable antenna structure of any one of claims 1 to 7;

the method comprises the following steps:

acquiring wireless connection parameters of the reconfigurable antenna structure under the current antenna structure; the current antenna structure is the first antenna structure or the second antenna structure;

and controlling the on-off state of a second radiation unit in the reconfigurable antenna structure in response to the wireless connection parameter meeting a switching condition so as to switch the radiation field type of the reconfigurable antenna structure.

9. The method of claim 8, the wireless connection parameters comprising at least an antenna resonant frequency; the switch unit at least comprises a first switch unit, the first radiation unit is formed by sequentially connecting a plurality of first radiation subunits in series, and two adjacent first radiation subunits are communicated or disconnected through the first switch unit;

in response to the structure of the reconfigurable antenna structure being a second antenna structure, the method further comprises:

acquiring the current antenna resonant frequency of the second antenna structure;

and controlling the on-off state of a second radiating unit and the on-off state of a first radiating subunit in the reconfigurable antenna structure to switch the structure of the second antenna structure and the antenna resonance frequency in response to the antenna resonance frequency meeting a frequency switching condition.

10. An electronic device comprising at least the reconfigurable antenna structure of any one of claims 1 to 7, a controller, and a support;

the reconfigurable antenna structure comprises a first radiating element, a plurality of second radiating elements and a plurality of switch elements; the reconfigurable antenna structure is arranged on the surface of the support body;

the controller is respectively connected with each switch unit, each switch unit corresponds to one second radiation unit, and each switch unit is used for controlling each second radiation unit to be communicated with or disconnected from the first radiation unit so as to form a coupling passage or an open circuit;

wherein, the switch units in the on state in the switch units are different to form a first antenna structure or a second antenna structure; the first antenna structure is different from the second antenna structure in radiation pattern.

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