CN115084837A

CN115084837A - Antenna device and electronic apparatus

Info

Publication number: CN115084837A
Application number: CN202210891849.7A
Authority: CN
Inventors: 尹晗
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-09-20
Anticipated expiration: 2042-07-27
Also published as: CN115084837B

Abstract

The application relates to an antenna device and an electronic apparatus, the antenna device includes: the first antenna assembly comprises a first feed source and a first radiator, and the first radiator is used for radiating radio-frequency signals of a first frequency band under the action of a first excitation signal provided by the first feed source; the second antenna assembly comprises a second feed source and a second radiating body, the second radiating body and the first radiating body are arranged at intervals, and the second radiating body is used for radiating radio-frequency signals of a second frequency band under the action of a second excitation signal provided by the second feed source; the first gating circuit is respectively connected with the first radiator and the second radiator and is used for connecting or disconnecting a first cascade channel between the first radiator and the second radiator; when the first cascade connection circuit is conducted, the first radiator and the second radiator are used for radiating radio frequency signals of the first frequency band and the third frequency band together under the action of the first excitation signal, so that multi-band radiation can be supported, and meanwhile, the occupied space of the antenna device can be reduced, and the cost is reduced.

Description

Antenna device and electronic apparatus

Technical Field

The present application relates to the field of antenna technologies, and in particular, to an antenna device and an electronic device.

Background

With the development of technology, communication function electronic devices (e.g., mobile phones, tablets, etc.) have become more popular and more powerful. An antenna arrangement is typically included in an electronic device to implement communication functions of the electronic device.

The antenna device in the electronic apparatus in the related art can support radiation in multiple bands, but it occupies a large space.

Disclosure of Invention

The embodiment of the application provides an antenna device and electronic equipment, which can support multi-band radiation and can reduce the occupied space of the antenna device and the cost.

In a first aspect, an embodiment of the present application provides an antenna apparatus, where the antenna apparatus includes:

the antenna comprises a first antenna component, a second antenna component and a third antenna component, wherein the first antenna component comprises a first feed source and a first radiator, and the first radiator is used for radiating radio-frequency signals of a first frequency band under the action of a first excitation signal provided by the first feed source;

the second antenna assembly comprises a second feed source and a second radiating body, the second radiating body and the first radiating body are arranged at intervals, and the second radiating body is used for radiating radio-frequency signals of a second frequency band under the action of a second excitation signal provided by the second feed source;

the first gating circuit is respectively connected with the first radiator and the second radiator and is used for connecting or disconnecting a first cascade channel between the first radiator and the second radiator; wherein the content of the first and second substances,

when the first cascade connection path is conducted, the first radiator and the second radiator are configured to jointly radiate a radio frequency signal including the third frequency band under the action of the first excitation signal, wherein a frequency range of the third frequency band is smaller than frequency ranges of the first frequency band and the second frequency band.

In a second aspect, an embodiment of the present application provides an electronic device, including: the antenna device is provided.

The antenna device and the electronic device include a first antenna assembly, a second antenna assembly and a first gating circuit, wherein the first gating circuit is respectively connected to the first radiator and the second radiator and is used for connecting or disconnecting a first cascade path between the first radiator and the second radiator; when the first cascade connection circuit is conducted, the first radiator and the second radiator are used for jointly radiating radio-frequency signals including a third frequency band under the action of the first excitation signal. The antenna device provided in the embodiment of the present application does not need to provide additional radiators (radiators except for the first radiator and the second radiator) to support the transceiving of the radio frequency signal of the third frequency band, and the transceiving of the radio frequency signal of the third frequency band can be realized in a manner of multiplexing the first radiator and the second radiator, so that the occupied space of the antenna device is reduced, the antenna device is favorable for being miniaturized, and the cost can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1-16 are schematic structural diagrams of antenna devices according to different embodiments;

FIG. 17 is a schematic view of a simulation model of an antenna device according to an embodiment;

fig. 18 is a simulation diagram of S parameters of the antenna apparatus when the first cascade path of the antenna apparatus is turned on and the first cascade path is turned off in one embodiment;

fig. 19 is a simulation diagram of S-parameters of the antenna device when the first cascade connection of the antenna device is disconnected in one embodiment;

fig. 20 is a simulation diagram of S-parameters of the antenna device when the first cascade connection of the antenna device is conducted according to an embodiment;

fig. 21 is a simulation diagram of S-parameters of an antenna device in one embodiment;

fig. 22 is a graph of the overall system efficiency of the antenna arrangement in one embodiment;

fig. 23 is a schematic structural view of an antenna device according to still another embodiment;

fig. 24 is a block diagram showing an internal configuration of an electronic apparatus in one embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

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

As shown in fig. 1, an embodiment of the present application provides an antenna apparatus. The antenna arrangement comprises a first antenna component 110, a second antenna component 120 and a first gating circuit 130. Wherein the first antenna assembly 110 includes a first feed S1 and a first radiator 111. The first feed S1 may be a device that generates a first stimulus signal. The first radiator 111 is configured to radiate radio frequency signals in a first frequency band under the action of a first excitation signal provided by the first feed S1. The first excitation signal generated by the first feed source S1 may be loaded on the first feed point a of the first radiator 111, and the first excitation signal is fed to the first radiator 111 through the first feed point a, so that the first radiator 111 radiates the radio frequency signal in the first frequency band. The radio frequency signal of the first frequency band may be at least one of an intermediate frequency signal, a high frequency signal, a medium-high frequency signal and an ultrahigh frequency signal.

The second antenna assembly 120 includes a second feed S2 and a second radiator 121. The second radiator 121 is spaced apart from the first radiator 111, and the second feed S2 may be a device for generating a second driving signal. The second radiator 121 is configured to radiate radio frequency signals in a second frequency band under the action of a second excitation signal provided by the second feed S2. The second excitation signal generated by the second feed S2 may be loaded on the second feeding point B of the second radiator 121, and the second excitation signal is fed to the second radiator 121 through the second feeding point B, so that the second radiator 121 radiates the radio frequency signal in the second frequency band. The radio frequency signal of the second frequency band may be at least one of an intermediate frequency signal, a high frequency signal, a medium-high frequency signal and an ultrahigh frequency signal.

Optionally, the first radiator 111 and the second radiator 121 may be respectively one of a Flexible Printed Circuit (FPC) antenna radiator, a Laser Direct Structuring (LDS) antenna radiator, a Print Direct Structuring (PDS) antenna radiator, and a metal radiation branch. In the embodiment of the present application, the types of the first radiator 111 and the second radiator 121 are not further limited, and the types of the first radiator 111 and the second radiator 121 may be the same or different. In the embodiment of the present disclosure, for convenience of description, the first radiator 111 and the second radiator 121 are taken as metal radiating branches, for example, a conductive bezel of an electronic device. It should be noted that the width of the gap between the first radiator 111 and the second radiator 121 may be determined according to actual situations.

The first gating circuit 130 is connected to the first radiator 111 and the second radiator 121, and is configured to turn on or off the first cascade path between the first radiator 111 and the second radiator 121. When the first cascade connection path is conducted, the first radiator 111 and the second radiator 121 are configured to jointly radiate a radio frequency signal including a third frequency band under the action of the first excitation signal, where a frequency range of the third frequency band is smaller than frequency ranges of the first frequency band and the second frequency band. The third frequency band may be a low frequency band. By controlling the first gate circuit 130, when the first gate circuit 130 is turned on, the first radiator 111 and the second radiator 121 may be cascaded to form a target radiator with a longer length, and under the action of the first excitation signal, the target radiator formed by cascading two small sizes may be used to radiate the radio frequency signal including the third frequency band. Specifically, when the first gate circuit 130 is turned on, under the action of the first excitation signal, the radiation of the radio frequency signal in the third frequency band may be implemented by using a target radiator formed by cascading two small-sized radiators. Optionally, when the first gating circuit 130 is turned on, under the action of the first excitation signal, the radiation of the radio frequency signal of the first frequency band and the radio frequency signal of the third frequency band may be implemented by using a target radiator formed by cascading two small sizes.

Optionally, the first frequency Band and the second frequency Band may be the same, and for example, both the first frequency Band and the second frequency Band may be intermediate frequencies, or both the first frequency Band and the second frequency Band may be medium High frequency (MHB), or both the first frequency Band and the second frequency Band may be Ultra High frequency (UHB), and the like. Optionally, the first frequency band and the second frequency band may be different, and exemplarily, the first frequency band is an intermediate frequency, and the second frequency band is a high frequency, or the first frequency band is a high frequency and the second frequency band is an intermediate frequency, or the first frequency band is a medium high frequency and the second frequency band is an ultrahigh frequency, and the like. In the embodiment of the present application, the first frequency band and the second frequency band are not limited to the above example. It should be noted that the frequency band of the UHB frequency band ranges from 3000MHz to 6000MHz, and may include, for example, a 5G New Radio (NR) signal, and may include, for example, a Radio frequency signal in a frequency band of NR-77/78/79, etc. The frequency band of the MHB ranges from 1000MHz to 3000MHz, wherein radio frequency signals of the MHB may include radio frequency signals of part or all of middle and high frequency bands of 4G Long Term Evolution (LTE) and 5G NR, and may exemplarily include radio frequency signals of LTE-1/2/3/4/7/32/34/38/39/40/41 frequency band and radio frequency signals of NR-1/3/7/40/41 frequency band.

The third frequency Band is a low frequency Band (LB) frequency Band, and the LB frequency Band is in a range Lower than 1000 MHz. The radio frequency signals of the low frequency band may include some or all of the radio frequency signals of the 4G-LTE and 5G-NR low frequency bands.

Optionally, when the first cascade connection is disconnected, the first antenna assembly 110 and the second antenna assembly 120 are two independent antenna assemblies, and the two antenna assemblies are arranged at an interval, so that the isolation between the two antenna assemblies can be further improved.

The antenna device includes a first antenna assembly 110, a second antenna assembly 120, a first gate circuit 130, and a first gate circuit 130, where the first gate circuit 130 is connected to the first radiator 111 and the second radiator 121, respectively, and is configured to connect or disconnect a first cascade path between the first radiator 111 and the second radiator 121; the first radiator 111 in the first antenna assembly 110 may radiate a radio frequency signal in a first frequency band under the action of a first excitation signal provided by the first feed S1, the second radiator 121 in the second antenna assembly 120 may radiate a radio frequency signal in a second frequency band under the action of a second excitation signal provided by the second feed S2, and when the first cascade connection is conducted, the first radiator 111 and the second radiator 121 are configured to jointly radiate a radio frequency signal including a third frequency band under the action of the first excitation signal. The antenna device provided in the embodiment of the present application does not need to provide additional radiators (radiators except for the first radiator 111 and the second radiator 121) to support the transceiving of the radio frequency signal in the third frequency band, and the transceiving of the radio frequency signal in the third frequency band can be realized by multiplexing the first radiator 111 and the second radiator 121, so that the occupied space of the antenna device is reduced, and the cost can also be reduced.

In addition, in the embodiment of the present application, when the first gating circuit 130 is turned on, under the action of the first excitation signal, the radiation of the radio frequency signal in the first frequency band and the radio frequency signal in the third frequency band may be implemented by using a target radiator formed by cascading two small sizes, so that, when the first level connection path is turned on, Carrier Aggregation (CA) of the first frequency band and the third frequency band, for example, coverage of a medium-high frequency band and a low frequency band, and a dual connection (LTE NR Double connection, endec) combination of a 4G-LTE signal and a 5G-NR may be implemented.

It should be noted that the first driving signal may include a plurality of sub-driving signals, and each sub-driving signal may be set according to the communication requirement of the radio frequency system. For example, when the radio frequency system needs to support transceiving of radio frequency signals of the third frequency band, the sub-excitation signal thereof may include a signal for exciting the radio frequency signals of the third frequency band, and when the radio frequency system needs to support transceiving of radio frequency signals of the first frequency band and the third frequency band, the sub-excitation signal thereof may include a signal for exciting the radio frequency signals of the third frequency band and a signal for exciting the radio frequency signals of the first frequency band.

As shown in fig. 2, in one embodiment, the antenna apparatus further includes a filter circuit 140, a first end of the filter circuit 140 is connected to the second feed S2, and a second end of the filter circuit 140 is connected to the first gate circuit 130 and the second radiator 121, respectively, and is configured to filter the radio frequency signal in the first frequency band when the first cascade circuit is turned on. The path between the second feed source S2 and the second radiator 121 is understood as a feed path, wherein the filter circuit 140 is disposed on the feed path to prevent the radio frequency signal of the third frequency band from flowing to the feed path where the second feed source S2 is located, so as to block the electromagnetic energy of the first radiator 111 from entering the second feed source S2, thereby reducing loss and improving the isolation between the first radiator 111 and the second radiator 121.

For convenience of description, the third frequency band is taken as an example of a low frequency band, and the filter circuit 140 may be a low frequency filter matching network, a band rejection filter, or the like. For example, the low frequency filter matching network may include at least one of a capacitor and an inductor. Illustratively, the filter circuit 140 is an LC circuit formed by connecting an inductor and a capacitor in parallel, and the inductance value and the capacitance value are set according to the frequency band of the electromagnetic waves blocked by different filter circuits 140. In the embodiment of the present application, the specific form of the filter circuit 140 is not limited to the above-mentioned illustration.

As shown in fig. 3, in one embodiment, the filter circuit 140 in fig. 2 can be replaced by a switch circuit 150, which is different from the previous embodiment. A first end of the switch circuit 150 is connected to the second feed source S2, and a second end of the switch circuit 150 is connected to the first gate circuit 130 and the second radiator 121, respectively. The switch circuit 150 is configured to disconnect the feed path between the second feed source S2 and the second radiator 121 when the first cascade path is turned on. It can be understood that the switch circuit 150 is disposed on the feeding path of the second feed source S2, and when the first gate switch is turned on, a target radiator in cascade arrangement is formed, at this time, the switch circuit 150 is controlled to disconnect the feeding path of the second feed source, and the radio frequency signal in the third frequency band may also be prevented from flowing to the feeding path of the second feed source S2, so as to block the electromagnetic energy of the first radiator 111 from entering the second feed source S2, so as to reduce loss and improve the isolation between the first radiator 111 and the second radiator 121.

Alternatively, the switch circuit 150 may be a Single Pole Single Throw (SPST) switch. In the embodiment of the present application, the specific form of the switch circuit 150 is not limited to the above illustration, and the switch circuit 150 may also include other types of switches.

As shown in fig. 4, in one embodiment, a first grounding point G1 is further disposed on the first radiator 111, wherein the first grounding point G1 is grounded via the first gating circuit 130. The first radiator 111 includes a first free end and a second free end, wherein the first feeding point a may be disposed near the first free end and the first ground point G1 may be disposed near the second free end. Illustratively, a gap is disposed between the first radiator 111 and the second radiator 121, the first feeding point a is disposed at the first free end of the first radiator 111, and the first grounding point G1 is disposed at the second free end of the first radiator 111 and near the gap. The first gating circuit 130 may be configured to selectively conduct a path between the first ground point G1 and the reference ground, and may also be configured to selectively conduct a first cascade path between the first radiator 111 and the second radiator 121. In this embodiment, the first gate circuit 130 can simultaneously turn on the first radiator 111 and the ground, as well as the first cascade path. Illustratively, the first gating circuit 130 may include a Double Pole Double Throw (DPDT) switch. Optionally, the first gating circuit 130 may time-division conduct the path between the first radiator 111 and the ground, and the first cascade path. Illustratively, the first gating circuit 130 may include a Single Pole Double Throw (SPDT) switch. In the embodiment of the present application, the switch type included in the first gating circuit 130 is not limited to the above-mentioned example, and other types of switches may be provided according to actual needs.

In the embodiment of the present application, in the first antenna assembly 110, the first grounding point G1 is disposed near the second free end, and the operation mode of the first antenna assembly 110 may be Loop mode, and the excitation mode thereof is Loop mode

Mode(s). Aiming at the radio frequency signals of the same low frequency band, compared with the antenna components of other modes,in this embodiment, the length of the first radiator 111 required by the first antenna element 110 operating in the Loop mode is the shortest, which is beneficial to the miniaturization design of the antenna device.

As shown in fig. 5, optionally, on the basis of the foregoing embodiment, the first antenna assembly 110 may further include a first capacitor C1, wherein the first capacitor C1 is disposed on the feeding path between the first feed S1 and the first feeding point a, so as to feed in a capacitive feeding manner. Thus, the operating mode of the first antenna assembly 110 may be a CRLH mode. Here, the first capacitance C1 may be understood as a coupling capacitance, and the CRLH mode may be understood as a loop antenna mode fed by the coupling capacitance.

Optionally, in the first antenna assembly 110, the first feeding point a is disposed at the second free end of the first radiator 111 and is disposed near the slot, and the first ground point G1 is disposed between the first free end and the second free end of the first radiator 111. Illustratively, the first grounding point G1 may also be disposed away from the second free end and near the first feeding point a, and the operation mode of the first antenna assembly 110 may be an IFA mode and the excitation mode thereof is an IFA mode

Mode(s). As shown in fig. 6, optionally, the positions of the first ground point G1 on the first radiator 111 and the first feeding point a in the first antenna assembly 110 may also be interchanged, that is, the first feeding point a is disposed near the second free end, the first ground point G1 is disposed far from the first free end and near the first feeding point a, and the operation mode of the first antenna assembly 110 may be the IFA mode.

Optionally, the first radiator 111 of the first antenna element 110 is not grounded through the first gate circuit 130, and it is understood that the first radiator 111 is not grounded, and the first antenna element 110 can operate in a Monopole mode with a driving mode of Monopole

Mode(s).

In the above embodiment, the operation mode of the first antenna assembly 110 may be one of a Loop mode, an IFA mode, a Monopole mode, and a CRLH mode, which may expand the excitation mode of the antenna apparatus to increase the application range of the antenna apparatus.

As shown in fig. 7, in one embodiment, the antenna apparatus further includes at least one first matching circuit 160, a first terminal of each first matching circuit 160 is correspondingly connected to a second terminal of the first gating circuit 130, and a second terminal of each first matching circuit 160 is connected to the ground terminal. The first matching unit to which each second terminal of the first gating circuit 130 is connected is different. A first terminal of the first gating circuit 130 is connected to a first ground point G1. Alternatively, the number of the second terminals of the first gating circuits 130 may be greater than the number of the first matching circuits 160. For example, if the number of the first matching circuits 160 is M, the number of the second terminals of the first gating circuit 130 may be greater than or equal to M +1, where M ≧ 1.

For convenience of illustration, taking M greater than 1 as an example, the first to mth second terminals are respectively connected to the first terminals of the first matching circuit 160 in a one-to-one correspondence, and the M +1 th second terminal may be directly or indirectly connected to the second feed S2. Alternatively, the (M + 1) th second terminal may be connected to the second feed S2 via the filter circuit 140 or the switch circuit 150.

The first gate circuit 130 may be configured to selectively turn on paths between each of the first matching circuit 160 and the first radiator 111 and between each of the second radiator 121 and the first radiator 111. Optionally, the first gating circuit 130 may simultaneously turn on the first cascade path and the path between the target matching circuit and the first radiator 111. Optionally, the first gating circuit 130 may time-division conduct the first cascade path and the path between the target matching circuit and the first radiator 111. Wherein the target matching circuit may be at least one of the plurality of first matching circuits 160. The first matching circuits 160 have different tuning parameters, and the first matching circuits 160 are configured to adjust a resonant frequency of a radio frequency signal in a first frequency band when the first cascade connection is disconnected, and to adjust a resonant frequency of a radio frequency signal in a third frequency band when the first cascade connection is connected. Each first matching circuit 160 may include at least one of a capacitor, a resistor, and an inductor, 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 first matching circuit 160 and the connection relationship between the devices are not further limited.

In this embodiment, when the first cascade connection circuit is turned on, the resonant frequency of the rf signal including the third frequency band can be adjusted by adjusting the frequency selection parameter (for example, the frequency selection parameter may include a resistance value, an inductance value, and a capacitance value) of the first matching circuit 160, so that the antenna apparatus can realize coverage of the rf signal including the third frequency band. For example, the antenna device may be configured to cover a part of or all of the low frequency band, or the antenna device may be configured to cover a part of or all of the medium frequency band and the low frequency band, so as to implement an ultra-wideband carrier aggregation function.

As shown in fig. 8 and 9, in one embodiment, on the basis of any of the foregoing embodiments, the antenna device further includes at least one second matching circuit 170, a first end of each second matching circuit 170 is correspondingly connected to each second end of the first gating circuit 130, and a second end of each second matching circuit 170 is connected to the second radiator 121. It is understood that each second matching circuit 170 may be disposed on the first cascade connection between the first radiator 111 and the second radiator 121. The tuning parameters of the second matching circuits 170 are different, and the second matching circuits 170 are configured to adjust the resonant frequencies of the radio frequency signals in the first frequency band and the third frequency band when the first cascade connection circuit is turned on. Each second matching circuit 170 may include at least one of a capacitor, a resistor, and an inductor, 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 second matching circuit 170 and the connection relationship between the devices are not further limited.

It should be noted that, in the embodiment of the present application, the switch type included in the first gating circuit 130 may also be set according to the number of the first matching circuit 160 and the second matching circuit 170 arranged in the antenna device, the number of target matching circuits that need to be turned on at the same time, and the requirement of the radio frequency signal that needs to be radiated by the target radiator.

In this embodiment, when the first cascade connection path is conducted, the resonant frequency of the radio frequency signal including the third frequency band may be adjusted by adjusting the frequency selection parameter (for example, the frequency selection parameter may include a resistance value, an inductance value, and a capacitance value) of the second matching circuit 170, so that the target radiator may cover the radio frequency signal including the third frequency band, for example, the antenna apparatus may cover a part of or all of the low frequency band, or the antenna apparatus may cover a part of or all of the medium-high frequency band and the low frequency band, and may implement an ultra-wideband carrier aggregation function.

As shown in fig. 10, in one embodiment, the second radiator 121 is provided with a second feeding point B for connecting the second feed S2 and a second grounding point G2 for connecting to ground. The second radiator 121 may include a first free end and a second free end that are opposite to each other, wherein a gap is disposed between the second free end of the first radiator 111 and the first free end of the second radiator 121. Alternatively, the second feeding point B may be disposed near the first free end of the second radiator 121, for example, at the first free end of the second radiator 121, the second grounding point G2 is disposed at the second free end of the second radiator 121, and the operation mode of the second antenna assembly 120 may be Loop mode.

As shown in fig. 11, optionally, when the operation mode of the second antenna assembly 120 is Loop mode, the second antenna assembly 120 may further include a second capacitor C2, and the second capacitor C2 is disposed on the feed path between the second feed S2 and the second feed point B, so as to perform feeding in a capacitive feeding manner. Thus, the operation mode of the second antenna assembly 120 may be a CRLH mode. The second capacitor C2 may be understood as a coupling capacitor.

As shown in fig. 12, alternatively, unlike the previous embodiment, the second grounding point G2 may be disposed between the first free end and the second free end of the second radiator 121, for example, the second grounding point G2 is disposed away from the second free end, or the second grounding point G2 is disposed close to the second feeding point B, and the operation mode of the first antenna assembly 110 may be the IFA mode.

Optionally, when the second radiator 121 of the second antenna element 120 is not grounded, the second antenna element 120 may operate in a Monopole mode.

In the embodiment of the present application, the working mode of the second antenna element 120 may be one of a Loop mode, an IFA mode, a Monopole mode, and a CRLH mode. In this embodiment, the working modes of the first antenna element 110 and the second antenna element 120 may be the same or different, and the working modes of the first antenna element 110 and the second antenna element 120 may be one of a Loop mode, an IFA mode, a Monopole mode, and a CRLH mode, and may be combined at will, so that the working mode of the antenna apparatus may be expanded to improve the application range of the antenna apparatus.

As shown in fig. 13 and 14, in one embodiment, the second radiator 121 is further provided with a second connection point C, the antenna assembly further includes a third matching circuit 180, a first end of the third matching circuit 180 is connected to the second connection point C, and a second end of the third matching circuit 180 is grounded and is configured to tune a resonant frequency of the radio frequency signal.

When the first-stage communication path is disconnected, the third matching circuit 180 may be configured to tune a resonant frequency of the radio frequency signal in the second frequency band, and the resonant frequency of the radio frequency signal in the second frequency band may be adjusted by adjusting a frequency selection parameter of the third matching circuit 180, so that the second radiator 121 may cover the radio frequency signal in the second frequency band, for example, the antenna apparatus may cover a part of or all of the middle and high frequency bands, so as to improve the transceiving performance of the middle and high frequency signals.

When the first cascade connection is turned on, the third matching circuit 180 may be configured to tune the resonant frequencies of the radio frequency signals of the first frequency band and the third frequency band. Optionally, when the first cascade connection is turned on, the third matching circuit 180 may be configured to tune a resonant frequency of the radio frequency signal in the third frequency band. The resonant frequency of the radio frequency signal of the corresponding frequency band can be adjusted by adjusting the frequency selection parameter of the first matching circuit 160, so that the target radiator can cover the radio frequency signal including the third frequency band, for example, the antenna device can cover a part of or all of the middle and high frequency bands and the low frequency band, and the ultra-wideband carrier aggregation function can be realized.

In one embodiment, a plurality of frequency modulation channels are disposed in the third matching circuit 180, and the frequency modulation parameters of the frequency modulation channels are not identical. The third matching circuit 180 may include a switch 181 and a plurality of tuning units 182, each tuning unit 182 having a different frequency modulation parameter. A first end of the switch 181 is connected to the second connection point C, a plurality of second ends of the switch 181 are respectively connected to the first ends of the plurality of tuning units 182 in a one-to-one correspondence, and a second end of each tuning unit 182 is grounded. Alternatively, the tuning unit 182 may include at least one of a capacitor, a resistor, and an inductor, or a combination of a plurality of them. In the embodiment of the present application, the device type of the frequency modulation device included in the tuning unit 182 and the connection relationship between the devices are not further limited. The antenna device may control the switch 181 to open the path between the target tuning unit 182 and the second radiator 121 according to actual communication requirements. Each frequency modulation path is provided with a tuning unit 182. Wherein the target tuning unit 182 is at least one of the plurality of tuning units 182. Optionally, the switch 181 may be a single-pole multi-throw switch, or may be a double-pole multi-throw switch. In the embodiment of the present application, the switch type of the switch 181 is not further limited, and may be set based on the number of the tuning units 182.

In this embodiment, by providing the third matching circuit 180, the resonant frequency of the radio frequency signal including the third frequency band can be adjusted in the first-stage communication path, so that the antenna apparatus can cover the radio frequency signal of the low frequency band, or cover a part of or all of the low frequency band and the middle/high frequency band, and obtain higher efficiency in the required frequency band, thereby further improving the performance of receiving and transmitting the low frequency signal. In addition, the resonant frequency of the radio frequency signal of the second frequency band can be adjusted when the first-stage communication circuit is disconnected, so that the antenna device covers partial frequency bands or all frequency bands of the middle-high frequency band, and the radiation performance of the antenna device is improved.

As shown in fig. 15, alternatively, on the basis of the previous embodiment, the second connection point C coincides with the second feeding point B, and the second feeding point B is connected with the second feed S2 through the switch 181. The second feeding point B can also be selectively switched to any tuning unit 182 through the switch 181. The switch 181 may include at least one first terminal and N second terminals, where N ≧ 2, and N is greater than the number of tuning units 182. Illustratively, N is N +1, where N is the number of tuning units 182. Illustratively, the third matching circuit 180 may include a switch 181, a first tuning unit 182, a second tuning unit 182, and a third tuning unit 182, wherein a first end of the switch 181 is connected to the second feeding point B, and four second ends of the switch 181 are connected to the second feed S2, the first tuning unit 182, the second tuning unit 182, and the third tuning unit 182, respectively, in a one-to-one correspondence. The first end of the switch 181 is also connected to the first radiator 111 through the first gate circuit 130.

In this embodiment, the switch 181 in the third matching circuit 180 may selectively turn on or off the feeding path from the second feed source S2 to the second feeding point B, so as to avoid an additional filter circuit 140 or switch circuit 150, and reuse the same switch 181 with multiple tuning units 182, so as to adjust the resonant frequencies of the radio frequency signals in different frequency bands, and improve the isolation between the first radiator 111 and the second radiator 121 while reducing the cost.

In one embodiment, the second feeding point a2 and the second ground point G2 on the second radiator 121 are separately disposed. The second ground point G2 may be provided coincident with the second connection point C or may be provided separately from the second connection point C.

Optionally, a second ground point G2 in the second antenna component 120 is provided separately from the second connection point C. When the second grounding point G2 is disposed at the second free end of the second radiator 121, the second connection point C is disposed between the second feeding point B and the second grounding point G2, and the second antenna assembly operates in Loop mode.

As shown in fig. 16, optionally, a second ground point G2 in the second antenna component 120 is located coincident with the second connection point C. The second grounding point G2 is disposed near the second free end of the second radiator 121 and is disposed near the first free end of the second radiator 121, and the operating mode of the second antenna assembly 120 is the IFA mode.

For convenience of explanation, the embodiments of the present application will be described taking an antenna device as shown in fig. 13 as an example. In the antenna apparatus, the mode of the first antenna element 110 is a CRLH mode, and the mode of the second antenna element is a Loop mode. When the first cascade connection path is conducted, the first radiator 111 and the second radiator 121 may be cascaded to form a target radiator with a larger length, so as to form a target antenna, where the target antenna has a CRLH mode.

Fig. 17 is a schematic diagram of a simulation model of the antenna device shown in fig. 13. In the figure, the port 2 is the first feeding point a of the first radiator 111, the port 6 is the second feeding point B of the second radiator 121, the port 5 may be the path 4 of the first gate circuit 130, and the port 8 is the switch 181 of the second antenna component 120. When the port 5 is open, the first antenna assembly 110 and the second antenna assembly 120 may operate in the medium-high frequency band. When the port 5 is turned on, the antenna device can operate in a low frequency band and a medium and high frequency band, and simulation results thereof are shown in fig. 18.

When the first cascade connection circuit is disconnected, that is, the first antenna assembly 110 and the second antenna assembly 120 work separately, the first matching circuit 160 and the third matching circuit 180 may respectively tune the resonant frequencies of the radio frequency signals of the first antenna assembly 110 and the second antenna assembly 120, and the simulation result is shown in fig. 19. In the figure, a curve ANT1 and a curve ANT1-1 are respectively the resonant modes corresponding to the first antenna element 110 under different tuning parameters, and a curve ANT2 and a curve ANT2-1 are respectively the resonant modes corresponding to the second antenna element 120 under different tuning parameters.

When the first cascade connection is conducted, that is, the first antenna component 110 and the second antenna component 120 cooperatively work in the low frequency band and the medium-high frequency, the resonant frequencies of the radio frequency signals in the low frequency band and the medium-high frequency can be respectively adjusted through the second matching circuit 170 and the third matching circuit 180, and the simulation result is obtained as shown in fig. 20. In the figure, curves LB1 and LB2 are resonant modes corresponding to the first antenna assembly 110 and the second antenna assembly 120 operating cooperatively under different tuning parameters, respectively.

For convenience of explanation, the isolation of the antenna device shown in fig. 14 will be described as an example. By providing a switch circuit 140 or a switch 181 in the feed path of the second feed S2, when the first-stage communication path is broken, the first antenna assembly and the second antenna assembly operate separately, and the isolation between the adjacent frequency bands in which the two antenna assemblies operate can be optimized. As shown in fig. 21, when the first antenna assembly 110 and the second antenna assembly 120 are operated separately and simultaneously radiate a radio frequency signal of 2.0GHz, the isolation between the first antenna assembly 110 and the second antenna assembly 120 in the middle and high frequency bands may approach-10 dB. As shown in fig. 22, the overall system efficiency of the antenna device can be improved by providing the switch circuit 140 or the changeover switch 181 in the feed path of the second feed S2 or by providing the filter circuit 130 in the feed path of the second feed S2. In the figure, curve 1 is the overall efficiency of the system in which the filter circuit 130 is provided in the feed path of the second feed S2, and curve 2 is the overall efficiency of the system in which the switch circuit 140 is provided in the feed path of the second feed S2.

As shown in fig. 23, in one embodiment, the antenna apparatus further includes: a third antenna component 191 and a second gating circuit 192. The third antenna assembly 191 includes a third feed S3 and a third radiator 1911, and the third radiator 1911 is configured to radiate radio frequency signals in the first frequency band or the second frequency band under the action of a third excitation signal provided by the third feed S3. The second gating circuit 192 is connected to the second radiator 121 and the third radiator 1911, and configured to turn on or off a second cascade path between the second radiator 121 and the third radiator 1911; when the first cascade connection path and the second cascade connection path are conducted, the first radiator 111, the second radiator 121, and the third radiator 1911 are configured to jointly radiate radio frequency signals in the first frequency band and the third frequency band under the action of the first excitation signal.

In this application, the antenna device may include a plurality of antenna assemblies, and a gating circuit is disposed in two adjacent antenna assemblies, and the gating circuit may Connect or disconnect a cascade path between two corresponding radiators in the two connected antenna assemblies, so that when each cascade path is connected, each radiator in each antenna assembly may be multiplexed to implement transceiving of radio frequency signals including a third frequency band, reduce an occupied space of the antenna device, facilitate miniaturization of the antenna device, and reduce cost, and at the same time, may also implement Carrier Aggregation (CA) of the first frequency band and the third frequency band, for example, coverage of a medium-high frequency band and a low-low frequency band, and a dual connection (LTE NR Double connection, ENDC) combination of 4G-LTE signals and 5G-NR.

It should be noted that, in the embodiments of the present application, the number of antenna assemblies is not limited to the examples of the above embodiments, and the antenna device may further include a fourth antenna assembly, a fifth antenna assembly, or more antenna assemblies. The number of gating circuits may be less than the number of antenna assemblies, which may be, for example, less than 1.

An electronic device may include the antenna apparatus in any of the foregoing embodiments, where the electronic device includes a first antenna assembly 110, a second antenna assembly 120, a first gate circuit 130, and a second gate circuit 130, where the first gate circuit 130 is connected to the first radiator 111 and the second radiator 121, respectively, and is configured to connect or disconnect a first cascade path between the first radiator 111 and the second radiator 121; the first radiator 111 in the first antenna assembly 110 may radiate a radio frequency signal in a first frequency band under the action of a first excitation signal provided by the first feed S1, the second radiator 121 in the second antenna assembly 120 may radiate a radio frequency signal in a second frequency band under the action of a second excitation signal provided by the second feed S2, and when the first cascade connection is conducted, the first radiator 111 and the second radiator 121 are configured to jointly radiate a radio frequency signal including a third frequency band under the action of the first excitation signal. The antenna device provided in the embodiment of the present application does not need to provide additional radiators (radiators except for the first radiator 111 and the second radiator 121) to support transceiving of radio frequency signals of the third frequency band, transceiving of radio frequency signals of the first frequency band and the third frequency band can be achieved by multiplexing the first radiator 111 and the second radiator 121, an occupied space of the antenna device is reduced, which is beneficial to a miniaturized design of the antenna device, and cost is reduced

As shown in fig. 24, further taking the communication device as a mobile phone 11 for illustration, specifically, as shown in fig. 24, the mobile phone 11 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. It will be understood by those skilled in the art that the handset 11 shown in figure 24 is not intended to be limiting and may include more or fewer components than shown, or some of the components may be combined, or a different arrangement of components. The various components shown in fig. 24 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.

The 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 memory 21 include an operating system 211, a communications module (or set of instructions) 212, a Global Positioning System (GPS) module (or set of instructions) 213, and the like.

Processing circuitry 22 and other control circuitry, such as control circuitry in radio frequency system 24, may be used to control the operation of handset 11. The processing circuit 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 11. The processing circuitry 22 may also issue control commands or the like for controlling switches in the radio frequency system 24.

The I/O subsystem 26 couples input/output peripheral devices on the cell phone 11, such as a keypad and other input control devices, to the peripheral device interface 23. The I/O subsystem 26 optionally includes a touch screen, buttons, tone generators, accelerometers (motion sensors), ambient and other sensors, light emitting diodes and other status indicators, data ports, and the like. Illustratively, a user may control the operation of the handset 11 by supplying commands through the I/O subsystem 26, and may receive status information and other output from the handset 11 using the output resources of the I/O subsystem 26. For example, a user pressing button 261 may turn the phone on or off.

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

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An antenna device, comprising:

the first antenna component comprises a first feed source and a first radiator, and the first radiator is used for radiating radio-frequency signals of a first frequency band under the action of a first excitation signal provided by the first feed source;

the first gating circuit is respectively connected with the first radiator and the second radiator and is used for connecting or disconnecting a first cascade channel between the first radiator and the second radiator; wherein, the first and the second end of the pipe are connected with each other,

2. The antenna device according to claim 1, further comprising a filter circuit, wherein a first end of the filter circuit is connected to the second feed source, and a second end of the filter circuit is connected to the first gate circuit and the second radiator, respectively, for blocking the radio frequency signal in the first frequency band when the first cascade connection is conducted.

3. The antenna device according to claim 1, further comprising a switch circuit, wherein a first end of the switch circuit is connected to the second feed source, and a second end of the switch circuit is connected to the first gate circuit and the second radiator, respectively, so as to disconnect a feed path between the second feed source and the second radiator when the first stage connection path is conducted.

4. The antenna device according to claim 1, wherein the first radiator further has a first feeding point connected to the first feed source, and a first grounding point, wherein the first grounding point is grounded via the first gating circuit.

5. The antenna device according to claim 4, wherein a gap is provided between the first radiator and the second radiator, the first feeding point is disposed at a first free end of the first radiator, and the first ground point is disposed at a second free end of the first radiator and adjacent to the gap.

6. The antenna device according to claim 4, wherein a gap is provided between the first radiator and the second radiator, the first feed point is disposed at the second free end of the first radiator and is disposed adjacent to the gap, and the first ground point is disposed between the first free end and the second free end of the first radiator.

7. The antenna device according to claim 1, further comprising at least one first matching circuit, wherein a first end of each first matching circuit is connected to a first end of the first gate circuit in a one-to-one correspondence manner, a second end of each first matching circuit is connected to ground, and a second end of the first gate circuit is connected to the first radiator; the first gating circuit is used for selectively connecting each first matching circuit and a path between the second radiator and the first radiator, tuning parameters of the first matching circuits are different, and the first matching circuits are used for adjusting the resonant frequency of the radio-frequency signal in the first frequency band when the first-stage connecting circuit is disconnected and adjusting the resonant frequency of the radio-frequency signal in the third frequency band when the first-stage connecting circuit is connected.

8. The antenna device according to claim 1 or 7, wherein the antenna device further includes at least one second matching circuit, a first end of each second matching circuit is correspondingly connected to a second end of the first gating circuit, a second end of each second matching circuit is correspondingly connected to the second radiator, tuning parameters of the second matching circuits are different, and the second matching circuits are configured to adjust a resonant frequency of the radio frequency signal including the third frequency band when the first stage communication circuit is turned on.

9. The antenna device according to claim 1, wherein a gap is disposed between the first radiator and the second radiator, wherein a second feed for connecting the second feed to the second radiator is disposed at a first free end of the second radiator and is disposed near the gap, and wherein a second ground point on the second radiator is disposed at a second free end of the second radiator, or wherein the second ground point is disposed away from the second free end.

10. The antenna device according to claim 9, wherein a second connection point is further disposed on the second radiator, the antenna assembly further includes a third matching circuit, a first end of the third matching circuit is connected to the second connection point, and a second end of the third matching circuit is grounded and is configured to tune resonance frequencies of the radio frequency signals in the first frequency band and the second frequency band.

11. The antenna device according to claim 10, wherein the third matching circuit includes a switch and a plurality of tuning elements, wherein a first end of the switch is connected to the second connection point, a plurality of second ends of the switch are respectively connected to first ends of the tuning elements in a one-to-one correspondence, and a second end of each tuning element is grounded.

12. The antenna device according to claim 11, characterized in that the second connection point coincides with the second feeding point, which is connected to the second feed via the changeover switch.

13. The antenna device according to claim 10, wherein the second ground point coincides with the second connection point, and the second connection point is disposed near the second feeding point; or the like, or, alternatively,

when the second grounding point is disposed at the second free end of the second radiator, the second grounding point is disposed between the second feeding point and the second grounding point.

14. The antenna device according to claim 1, characterized in that the first antenna component further comprises a first capacitor, a first end of the first capacitor is connected to the first radiator, a second end of the first capacitor is connected to the first feed, and/or,

the first antenna assembly further comprises a second capacitor, a first end of the second capacitor is connected with the second radiator, and a second end of the second capacitor is connected with the second feed source.

15. The antenna device according to claim 1, further comprising:

a third antenna assembly, including a third feed source and a third radiator, where the third radiator is configured to radiate, under an effect of a third excitation signal provided by the third feed source, a radio frequency signal in the first frequency band or the second frequency band;

the second gating circuit is respectively connected with the second radiator and the third radiator and is used for connecting or disconnecting a second cascade channel between the second radiator and the third radiator; wherein the content of the first and second substances,

when the first cascade path and the second cascade path are conducted, the first radiator, the second radiator and the third radiator are used for radiating the radio frequency signals of the third frequency band together under the action of the first excitation signal.

16. The antenna device according to claim 1, wherein the first frequency band and the second frequency band are the same, and the third frequency band is a low frequency band.

17. An electronic device, comprising: an antenna device as claimed in any one of claims 1 to 16.