CN117728172A - Antenna devices and electronic equipment - Google Patents

Abstract

The embodiment of the application provides an antenna device and electronic equipment. The antenna device comprises a first radiator, a feed source, a second radiator, a first switch and a second switch. The feed source feeds an excitation signal to the first radiator through the feed point so as to excite the first radiator to support the first resonant frequency band; the second radiator is electromagnetically coupled with the first radiator through the gap; the first matching module is electrically connected with the second radiator; the first switch is electrically connected with the first radiator and the first matching module; the second switch is connected with the first matching module and the ground; when the first switch is closed and the second switch is opened, the first radiator, the first matching module and the second radiator are electrically connected so as to increase the radiation length of the first radiator; when the first switch is opened and the second switch is closed, the second radiator is grounded through the second switch, so that the excitation signal excites the second radiator to support the second resonant frequency band. Thus, the communication performance of the antenna is improved by adjusting the first radiator or the second radiator.

Description

Antenna devices and electronic equipment

Technical field

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

Background technique

Electronic devices such as smartphones are equipped with antennas to implement wireless communication functions. For example, 4G antenna, 5G antenna and WiFi antenna, etc. Antenna is the main electronic component that realizes the communication function of electronic equipment, and it is also one of the indispensable electronic components. Setting up multiple antennas at the same time has become a trend to ensure good communication of electronic equipment. In different communication environments, it is necessary to maintain smooth communication with electronic devices, so it is extremely important to improve the communication performance of the antenna.

Contents of the invention

Embodiments of the present application provide an antenna device and electronic equipment, which can improve the communication performance of the antenna device.

An embodiment of the present application provides an antenna device, including:

The first radiator includes a feed point;

A feed source, the feed source is electrically connected to the feed point, and the feed source is used to feed an excitation signal to the first radiator through the feed point to excite the first radiator to support the first radiator. a resonance frequency band;

The second radiator has a gap between it and the first radiator, and the second radiator is electromagnetically coupled to the first radiator through the gap;

The first matching module is electrically connected to the second radiator;

A first switch has one end electrically connected to the first radiator and the other end electrically connected to the first matching module; and

The second switch has one end electrically connected to the first matching module and the other end grounded;

When the first switch is closed and the second switch is opened, the first radiator, the first matching module and the second radiator are electrically connected to increase the radiation of the first radiator. length;

When the first switch is turned off and the second switch is turned on, the second radiator is grounded through the second switch, so that the excitation signal excites the second radiator to support the second resonant frequency band.

An embodiment of the present application also provides an electronic device, including:

case;

An antenna device is provided on the housing, and the antenna device is an antenna device according to any embodiment of the present application.

The antenna device according to the embodiment of the present application can increase the radiation length of the first radiator to improve the radiation efficiency of the antenna device, or change the radiation length of the second radiator by switching the first switch and the second switch between the open and closed states. The effective electrical length is used to adjust the resonant frequency band of the second radiator, so that the second radiator can form a rich CA or ENDC state with the first radiator, and can better cover various frequency bands to increase the communication bandwidth covered by the antenna device, thereby Improve the communication performance of the antenna device.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a first structural schematic diagram of an antenna device according to an embodiment of the present application.

FIG. 2 is a schematic diagram of the radiation efficiency of the antenna device according to the embodiment of the present application.

Figure 3 is a second structural schematic diagram of an antenna device according to an embodiment of the present application.

FIG. 4 is another schematic diagram of the radiation efficiency of the antenna device according to the embodiment of the present application.

Figure 5 is a third structural schematic diagram of an antenna device according to an embodiment of the present application.

Figure 6 is a fourth structural schematic diagram of an antenna device according to an embodiment of the present application.

Figure 7 is a fifth structural schematic diagram of an antenna device according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a sixth type of antenna device according to an embodiment of the present application.

Figure 9 is a schematic diagram of the internal circuit structure of the antenna switch according to the embodiment of the present application.

Figure 10 is a seventh structural schematic diagram of an antenna device according to an embodiment of the present application.

FIG. 11 is a schematic structural diagram of an eighth type of antenna device according to an embodiment of the present application.

Figure 12 is a ninth structural schematic diagram of an antenna device according to an embodiment of the present application.

Figure 13 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of this application.

This embodiment of the present application provides an antenna device 100, which can be applied to electronic equipment. The electronic device may be, for example, a smartphone, a tablet computer, a game device, an AR (Augmented Reality, augmented reality) device, a notebook computer, a desktop computing device, or other devices with wireless communication functions.

Referring to FIG. 1 , an antenna device 100 provided by an embodiment of the present application includes a first radiator 10 , a feed 20 , a second radiator 30 , a first matching module 40 , a first switch 51 and a second switch 52 . The first radiator 10 includes a feed point 11 . The feed source 20 is electrically connected to the feed point 11. The feed source 20 is used to feed an excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the first resonance frequency band. There is a gap 10a between the second radiator 30 and the first radiator 10, and the second radiator 30 is electromagnetically coupled to the first radiator 10 through the gap 10a.

The first matching module 40 is electrically connected to the second radiator 30 . One end of the first switch 51 is electrically connected to the first radiator 10 , and the other end of the first switch 51 is electrically connected to the first matching module 40 . One end of the second switch 52 is electrically connected to the first matching module 40 , and the other end of the second switch 52 is grounded.

When the first switch 51 is closed and the second switch 52 is opened, the first radiator 10 , the first matching module 40 and the second radiator 30 are electrically connected to increase the radiation length of the first radiator 10 .

When the first switch 51 is turned off and the second switch 52 is turned on, the second radiator 30 is grounded through the second switch 52 so that the excitation signal excites the second radiator 30 to support the second resonance frequency band.

In this way, the antenna device 100 in the embodiment of the present application can increase the radiation length of the first radiator 10 to improve the radiation efficiency of the antenna device 100 by switching the first switch 51 and the second switch 52 between the open and closed states, or The equivalent electrical length of the second radiator 30 is changed to adjust the resonant frequency band of the second radiator 30 so that the second radiator 30 can form a rich CA or ENDC state with the first radiator 10 and can better cover various frequency bands. In order to increase the communication bandwidth covered by the antenna device 100, thereby improving the communication performance of the antenna device.

The second radiator 30 is electromagnetically coupled with the first radiator 10 through the gap 10a. The first radiator 10 can be understood as the main radiator, and the second radiator 30 can be understood as a parasitic radiator.

Specifically, the first radiator 10 may be an antenna radiator in the form of FPC (Flexible Printed Circuit, flexible circuit board), LDS (Laser Direct Structure, laser direct shaping), PDS (Printing Direct Structure, printing direct shaping), etc., It can also be an antenna radiator in the form of MDA (in-mold injection molding), or an antenna radiator formed by the conductor structure of electronic equipment, metal traces on a circuit board, and other structures. The shape, size, etc. of the first radiator 10 can be set according to actual needs. For example, in a practical application example, the first radiator 10 may be in an "L" shape.

Similarly, the second radiator 30 may also be an antenna radiator in the form of FPC, LDS, PDS, MDA, etc., or may be an antenna radiator formed by a conductor structure of an electronic device, a metal trace on a circuit board, or other structures.

In one embodiment, the type of the first radiator 10 is the same as the type of the second radiator 30; in other embodiments, the type of the first radiator 10 may be different from the type of the second radiator 30. In this regard No restrictions.

Wherein, the feed source 20 can be disposed on a circuit board of the electronic device, such as a mainboard or a separate circuit board. Feed 20 is used to provide a first excitation signal. In practical applications, the excitation signal may be, for example, 4G (4th Generation Mobile Communication Technology, fourth generation mobile communication technology) excitation signal, 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) excitation signal, WiFi (Wireless-Fidelity, wireless Fidelity) excitation signal and other types of excitation signals. The feeding point 11 is used to feed an excitation signal to excite the first radiator 10 and the second radiator 30 to radiate wireless signals to the outside world to implement wireless communication functions.

The switching switch may be a switch with a single-pole single-throw function formed by electronic components such as transistors and switching tubes.

The excitation signal is fed into the feed point 11 to excite the first radiator 10 and the second radiator 30 to resonate and radiate wireless signals to the outside world to realize the wireless communication function. For example, the first radiator 10 and the second radiator 30 can radiate WiFi signals in the 2.4GHz frequency band, or 5.5GHz WIFI5G signals, etc., which are not limited here.

When the first switch 51 and the second switch 52 are turned off, the feed source 20 feeds the excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the first resonance frequency band. In the coupling effect Next, the excitation signal excites the second radiator 30 to support the fourth resonance frequency band. At this time, the first radiator 10 and the second radiator 30 form a CA (Carrier Aggregation, carrier aggregation) or ENDC (EUTRA-NR Dual Connection, 4G wireless access network and 5G- NR's dual connection) combined state.

The first matching module 40 may be an impedance circuit, and specifically may be one or more impedance elements such as capacitors, inductors, or resistors. The first matching module 40 may be set according to actual needs, and is not limited here.

In one embodiment, the first matching module 40 is an inductor. When the second switch 52 is closed and the first switch 51 is opened, the second radiator 30 is grounded through the second switch 52 and the inductance of the first matching module 40 is used to connect the ground to the ground. The equivalent electrical length of the second radiator 30 becomes shorter, which increases the operating frequency. That is, the excitation signal excites the second radiator 30 to support the second resonance frequency band. At this time, the average frequency of the second resonance frequency band is greater than the average frequency of the fourth resonance frequency band. The first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first resonant frequency band and the second resonant frequency band.

In another embodiment, the first matching module 40 is a capacitor. When the second switch 52 is closed and the first switch 51 is open, the second radiator 30 is grounded through the second switch 52 and the capacitor of the first matching module 40 is The equivalent electrical length of the second radiator 30 is lengthened and the operating frequency is lowered. That is, the excitation signal excites the second radiator 30 to support the second resonance frequency band. At this time, the average frequency of the second resonance frequency band is smaller than the average frequency of the fourth resonance frequency band. The first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first resonant frequency band and the second resonant frequency band.

In other embodiments, the first matching module 40 may also include at least two impedance elements such as capacitance, inductance or resistance. When the second switch 52 is closed and the first switch 51 is open, the second radiator 30 passes through the first switch 52 . The two switches 52 are grounded, and the equivalent electrical length of the second radiator 30 is adjusted through the first matching module 40 so that the excitation signal excites the second radiator 30 to support a resonant frequency band different from the second resonant frequency band. Specifically, the first matching module 40 can be set according to actual needs, and is not limited here.

When the first switch 51 is closed and the second switch 52 is opened, the first radiator 10 , the first matching module 40 and the second radiator 30 are electrically connected. That is, the first radiator 10 and the second radiator 30 are connected through the first switch 51 . A matching module 40 is connected to the second radiator 30 to increase the radiation length of the first radiator 10, thereby improving the radiation performance of the antenna device 100. For details, please refer to Figure 2, which shows the antenna device 100 according to the embodiment of the present application. Schematic diagram of radiation efficiency. In Figure 2, curve S1 represents the theoretical radiation efficiency of the signal radiated by the antenna device 100 when the first switch 51 is closed and the second switch 52 is turned off; the curve S2 represents the theoretical radiation efficiency of the signal radiated by the antenna device 100 when the first switch 51 and the second switch 52 are turned off. When , the theoretical radiation efficiency of the signal radiated by the antenna device 100 is; Curve S3 represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first switch 51 is closed and the second switch 52 is open; Curve S4 represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first switch 51 is closed and the second switch 52 is open. The theoretical radiation efficiency of the signal radiated by the antenna device 100 when the first switch 51 and the second switch 52 are turned off.

It can be seen from FIG. 2 that when the first switch 51 is closed and the second switch 52 is opened, the first radiator 10 , the first matching module 40 and the second radiator 30 are electrically connected to increase the radiation of the first radiator 10 The length improves the radiation efficiency of the antenna device 100 by about 1.5dB.

Referring to FIG. 3 , in some embodiments, the antenna device 100 includes a second matching module 60 , a third switch 53 and a fourth switch 54 .

The second matching module 60 is electrically connected to the second radiator 30 , one end of the third switch 53 is electrically connected to the first radiator 10 , and the other end is electrically connected to the second matching module 60 . One end of the fourth switch 54 is electrically connected to the second matching module 60 and the other end is grounded.

When the third switch 53 is closed and the fourth switch 54 is opened, the first radiator 10 , the second matching module 60 and the second radiator 30 are electrically connected to increase the radiation length of the first radiator 10 .

When the third switch 53 is turned off and the fourth switch 54 is turned on, the second radiator 30 is grounded through the fourth switch 54 so that the excitation signal excites the second radiator 30 to support the third resonance frequency band.

In this way, by switching the open and closed states of the third switch 53 and the fourth switch 54, the radiation length of the first radiator 10 can be increased to improve the radiation efficiency of the antenna device 100, or the second radiator 30 can be changed. The effective electrical length is used to adjust the resonant frequency band of the second radiator 30, so that the second radiator 30 can form a rich CA or ENDC state with the first radiator 10, and can better cover various frequency bands to improve the coverage of the antenna device 100. communication bandwidth, thereby improving the communication performance of the antenna device.

When the first switch 51 , the second switch 52 , the third switch 53 and the fourth switch 54 are all turned off, the feed source 20 feeds the excitation signal to the first radiator 10 through the feed point 11 to excite the first radiation. The body 10 supports the first resonance frequency band, and under the coupling effect, the excitation signal excites the second radiator 30 to support the fourth resonance frequency band.

The second matching module 60 may be an impedance circuit, and specifically may be one or more impedance elements such as capacitors, inductors, or resistors, which may be set according to actual needs and is not limited here.

In one embodiment, the second matching module 60 is an inductor. When the fourth switch 54 is closed and the first switch 51 , the second switch 52 and the third switch 53 are all open, the second radiator 30 passes through the fourth switch 54 By grounding, the equivalent electrical length of the second radiator 30 is shortened through the inductance of the second matching module 60 and the operating frequency is increased. That is, the excitation signal excites the second radiator 30 to support the third resonance frequency band. At this time, the average frequency of the third resonance frequency band is greater than the average frequency of the fourth resonance frequency band.

In another embodiment, the second matching module 60 is a capacitor. When the fourth switch 54 is closed and the first switch 51 , the second switch 52 and the third switch 53 are all open, the second radiator 30 passes through the fourth switch. 54 is connected to ground. The capacitance of the second matching module 60 lengthens the equivalent electrical length of the second radiator 30 and reduces the operating frequency. That is, the excitation signal excites the second radiator 30 to support the third resonance frequency band. At this time, the average frequency of the third resonance frequency band is smaller than the average frequency of the fourth resonance frequency band.

In other embodiments, the second matching module 60 may also include at least two impedance elements such as capacitance, inductance or resistance. When the fourth switch 54 is closed, the first switch 51 , the second switch 52 and the third switch 53 are all When disconnected, the second radiator 30 is grounded through the second switch 52, and the equivalent electrical length of the second radiator 30 is adjusted through the second matching module 60, so that the excitation signal excites the second radiator 30 to support a resonance different from the third resonance. The resonant frequency band of the frequency band. Specifically, the second matching module 60 can be set according to actual needs, and is not limited here.

When the third switch 53 is closed and the first switch 51 , the second switch 52 and the fourth switch 54 are all open, the first radiator 10 , the second matching module 60 and the second radiator 30 are electrically connected, that is, the first switch 51 , the second switch 52 and the fourth switch 54 are all open. A radiator 10 is electrically connected to the second radiator 30 through the third switch 53 and the second matching module 60 to increase the radiation length of the first radiator 10 and thereby improve the radiation performance of the antenna device 100 .

When the first switch 51 and the third switch 53 are closed and the second switch 52 and the fourth switch 54 are opened, the first radiator 10 , the first matching module 40 , the second matching module 60 and the second radiator 30 are electrically connected. , that is, the first radiator 10 is electrically connected to the second radiator 30 through the third switch 53 , the first matching module 40 and the second matching module 60 to increase the radiation length of the first radiator 10 and thereby improve the antenna. Radiation performance of device 100. It should be pointed out that in this case, the first matching module 40 and the second matching module 60 are both capacitors or inductors.

In some embodiments, the first matching module 40 includes one of a capacitor and an inductor;

The second matching module 60 includes the other one of a capacitor and an inductor.

In this way, when the second switch 52 or the fourth switch 54 is closed and the first switch 51 and the third switch 53 are both open, the first matching module 40 and the second matching module 60 of different types can be used to increase or decrease the The equivalent electrical length of the second radiator 30 can reduce or increase the operating frequency of the second radiator 30 so that the second radiator 30 and the first radiator 10 can form CA combination states in different frequency bands, thereby realizing the antenna device. 100's of multi-band coverage.

When the first switch 51 , the second switch 52 , the third switch 53 and the fourth switch 54 are all turned off, the feed source 20 feeds the excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator. 10 supports the first resonance frequency band, and under the coupling effect, the excitation signal excites the second radiator 30 to support the fourth resonance frequency band. At this time, the first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first resonant frequency band and the fourth resonant frequency band.

In one embodiment, the first matching module 40 only includes a capacitor, and the second matching module 60 only includes an inductor.

When the second switch 52 is closed and the first switch 51 , the third switch 53 and the fourth switch 54 are all open, the second radiator 30 is grounded through the second switch 52 so that the excitation signal excites the second radiator 30 to support the second switch 52 . Second resonance frequency band. Wherein, the average frequency in the second resonant frequency band is smaller than the average frequency in the fourth resonant frequency band. Specifically, the equivalent electrical length of the second radiator 30 can be increased through the first matching module 40 , that is, the capacitor, thereby reducing the operating frequency of the second radiator 30 , for example, switching the operating frequency of the second radiator 30 to the second radiator 30 . The state of the two resonant frequency bands causes the first radiator 10 and the second radiator 30 to form a CA or ENDC combination state of the first resonant frequency band and the second resonant frequency band.

When the fourth switch 54 is closed and the first switch 51 , the second switch 52 and the third switch 53 are all open, the second radiator 30 is grounded through the fourth switch 54 so that the excitation signal excites the second radiator 30 to support the Three resonance frequency bands. Wherein, the average frequency in the third resonant frequency band is greater than the average frequency in the fourth resonant frequency band. Specifically, the equivalent electrical length of the second radiator 30 can be reduced through the second matching module 60 , that is, the inductor, thereby increasing the operating frequency of the second radiator 30 , for example, switching the operating frequency of the second radiator 30 to The state of the third resonant frequency band causes the first radiator 10 and the second radiator 30 to form a CA or ENDC combined state of the first resonant frequency band and the third resonant frequency band.

Similarly, in another embodiment, the first matching module 40 includes an inductor, and the second matching module 60 includes a capacitor.

When the second switch 52 is closed and the first switch 51 , the third switch 53 and the fourth switch 54 are all open, the second radiator 30 is grounded through the second switch 52 so that the excitation signal excites the second radiator 30 to support the second switch 52 . Second resonance frequency band. At this time, the average frequency of the second resonance frequency band is greater than the average frequency of the fourth resonance frequency band.

When the fourth switch 54 is closed and the first switch 51 , the second switch 52 and the third switch 53 are all open, the second radiator 30 is grounded through the fourth switch 54 so that the excitation signal excites the second radiator 30 to support the Three resonance frequency bands. At this time, the average frequency of the third resonance frequency band is smaller than the average frequency of the fourth resonance frequency band.

In some embodiments, both the first matching module 40 and the second matching module 60 only include inductors. When the second switch 52 and the fourth switch 54 are closed and the first switch 51 and the third switch 53 are opened, the second radiation The body 30 is grounded through the second switch 52 and the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the fifth resonance frequency band. The average frequency of the fifth resonant frequency band is greater than the average frequency of the fourth resonant frequency band. The inductance values of the first matching module 40 and the second matching module 60 may be the same or different, and are not limited here.

In some embodiments, both the first matching module 40 and the second matching module 60 only include capacitors. When the second switch 52 and the fourth switch 54 are closed and the first switch 51 and the third switch 53 are opened, the second radiation The body 30 is grounded through the second switch 52 and the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the sixth resonance frequency band. The average frequency of the sixth resonant frequency band is smaller than the average frequency of the fourth resonant frequency band. The capacitance values of the first matching module 40 and the second matching module 60 may be the same or different, and are not limited here.

In some embodiments, the first matching module 40 and the second matching module 60 can also be a hybrid circuit composed of impedance elements such as capacitance, inductance or resistance. The second switch 52 and the fourth switch 54 are closed, the first switch 51 and When the third switch 53 is turned off, the second radiator 30 is grounded through the second switch 52 and the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the seventh resonance frequency band. The frequency range of the seventh resonant frequency band is related to the specific parameter settings of the first matching module 40 and the second matching module 60, and can be set according to actual needs, and is not limited here. The circuit designs of the first matching module 40 and the second matching module 60 may be the same or different, and are not limited here.

In some embodiments, when the first switch 51 and the third switch 53 are closed and the second switch 52 and the fourth switch 54 are turned on, the first radiator 10 , the first matching module 40 , the second matching module 60 and The second radiator 30 is electrically connected to increase the radiation length of the first radiator 10 , thereby increasing the radiation antenna diameter of the antenna device 100 and improving the communication efficiency of the antenna device 100 . It should be noted that in this case, the first matching module 40 and the second matching module 60 both include only capacitors or only include inductors.

In some embodiments, the first resonant frequency band covers one of the B3 frequency band or the B1 frequency band.

The second resonance frequency band covers one of N1 frequency band, N40 frequency band or N78 frequency band.

The third resonant frequency band covers one of N1 frequency band, N40 frequency band or N78 frequency band.

In this way, multiple frequency bands can make the radiation pattern of the antenna device 100 more diverse and increase the communication bandwidth covered by the antenna device 100 .

Please refer to FIG. 4 , which is another schematic diagram of the radiation efficiency of the antenna device 100 according to the embodiment of the present application.

In one embodiment, when the first matching module 40 is an inductor, the second matching module 60 is a capacitor, and the first switch 51 , the second switch 52 , the third switch 53 and the fourth switch 54 are all in the off state, The feed source 20 feeds the excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the B3 frequency band (frequency range is 1.71-1.88GHz), and at the same time excite the second radiator 30 to support the N41 frequency band ( The frequency range is 2.496-2.69GHz), the first radiator 10 and the second radiator 30 form a CA state to operate, such as a combination of B3N41, as shown in Figure 4. The curve S5 (SystemTot.Efficiency-B3N41) in FIG. 4 represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first radiator 10 and the second radiator 30 form the CA state combination of B3N41.

When the second switch 52 is closed and the first switch 51 , the third switch 53 and the fourth switch 54 are open, the second radiator 30 is grounded through the second switch 52 , and the first matching module 40 , that is, the inductance can be reduced. The equivalent electrical length of the second radiator 30 increases the operating frequency of the second radiator 30, that is, the excitation signal excites the second radiator 30 to support the N78 frequency band (frequency range is 3.4-3.6GHz). At this time, the first radiator 10 and the second radiator 30 can work in the CA or ENDC combination state of B3N78, as shown in Figure 4 . Among them, curve S6 (System Tot.Efficiency-B3N78) in FIG. 4 represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first radiator 10 and the second radiator 30 form the CA state combination of B3N78.

When the fourth switch 54 is closed and the first switch 51 , the third switch 53 and the second switch 52 are open, the second radiator 30 is grounded through the fourth switch 54 , and the second matching module 60 , that is, the capacitance can be increased. The equivalent electrical length of the second radiator 30 reduces the operating frequency of the second radiator 30, that is, the excitation signal excites the second radiator 30 to support the N1 frequency band (frequency range is 1.92-1.98GHz). At this time, the first radiator 10 and the second radiator 30 can work in the CA or ENDC combination state of B3N1, as shown in FIG. 4 . Among them, curve S7 (System Tot.Efficiency-B3N1) in FIG. 4 represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first radiator 10 and the second radiator 30 form the CA state combination of B3N1.

It can be understood that in other embodiments, the excitation signal can also excite the first radiator 10 and the second radiator 30 to support other resonant frequency bands, which is not limited here.

It should be pointed out that in the antenna device 100 of the embodiment of the present application, the second radiator 30 can be operated in different modes by changing the states of the first switch 51 , the second switch 52 , the third switch 53 and the fourth switch 54 . When switching frequency bands, the second radiator 30 can form rich CA or ENDC states with the first radiator 10, which can better cover various frequency bands and thereby improve the communication capability of the antenna device 100.

Referring to FIG. 5 , in some embodiments, the antenna device 100 may further include a third matching module 71 and a fifth switch 55 , and the third matching module 71 is grounded. One end of the fifth switch 55 is electrically connected to the first radiator 10 , and the other end is electrically connected to the third matching module 71 . The fifth switch 55 can be closed or opened to electrically connect the third matching module 71 to the first radiator 10 or disconnected.

In this way, the state of the fifth switch 55 can enable the third matching module 71 to be electrically connected or disconnected from the first radiator 10 , thereby changing the equivalent electrical length of the first radiator 10 and causing the excitation signal to cause the first radiator 10 to change. Supporting resonant frequency bands different from the first resonant frequency band, the first radiator 10 and the second radiator 30 can form rich CA or ENDC combination states, which can better cover various frequency bands and thereby improve the communication capability of the antenna device 100 .

The third matching module 71 may be an impedance circuit, specifically one or more impedance elements such as a capacitor, an inductor, or a resistor. The third matching module 71 may be set according to actual needs and is not limited here.

Referring to FIG. 6 , in some embodiments, the antenna device 100 may further include a fourth matching module 72 and a sixth switch 56 , and the fourth matching module 72 is grounded. One end of the sixth switch 56 is electrically connected to the first radiator 10 , and the other end is electrically connected to the fourth matching module 72 . The sixth switch 56 can be closed or opened to electrically connect the fourth matching module 72 to the first radiator 10 or disconnected. The third matching module 71 and the fourth matching module 72 may have different impedances.

In this way, the state of the sixth switch 56 can enable the fourth matching module 72 to be electrically connected or disconnected from the first radiator 10 , thereby changing the equivalent electrical length of the first radiator 10 and causing the excitation signal to cause the first radiator 10 to change. Supporting resonant frequency bands different from the first resonant frequency band, the first radiator 10 and the second radiator 30 can form rich CA or ENDC combination states, which can better cover various frequency bands and thereby improve the communication capability of the antenna device 100 .

The fourth matching module 72 may be an impedance circuit, specifically one or more impedance elements such as a capacitor, an inductor or a resistor, which may be set according to actual needs and is not limited here.

Referring to FIG. 7 , in some embodiments, the antenna device 100 may also include a fifth switch 55 , a sixth switch 56 , a third matching module 71 and a fourth matching module 72 . When the fifth switch 55 and the sixth switch 56 are closed, the third matching module 71 and the fourth matching module 72 are electrically connected to the first radiator 10, so that the equivalent electrical length of the first radiator 10 can be changed and the excitation signal can be The first radiator 10 is caused to support a resonance frequency band different from the first resonance frequency band.

Referring to Figures 8 and 9, in some embodiments, the antenna device 100 includes an antenna switch 50. The antenna switch 50 includes a first switch 51 and a second switch 52. The first switch 51 and the second switch 52 are separately packaged in the antenna. Inside switch 50.

The antenna switch 50 may also include a first terminal 50a and a second terminal 50b. One end of the first terminal 50a is electrically connected to the first radiator 10, and the other end is electrically connected to the first switch 51. One end of the second terminal 50b is electrically connected to the second switch 52 and the first switch 51 , and the other end is electrically connected to the first matching module 40 .

In this way, the first terminal 50a of the antenna switch 50 is used to electrically connect with the first radiator 10, and the first switch 51 and the second switch 52 are placed in the same antenna switch 50 for easy operation.

Referring to FIGS. 8 and 9 , in some embodiments, the antenna switch 50 may include a third switch 53 , a fourth switch 54 , a fifth switch 55 and a sixth switch 56 . One end of the third switch 53 is electrically connected to the first switch 51 and the first terminal 50a, the other end is electrically connected to the second matching module 60, and the third switch 53 is connected to the first radiator 10 through the first terminal 50a. Electrical connection. One end of the fifth switch 55 is electrically connected to the sixth switch 56 and the first terminal 50a, and the other end is electrically connected to the third matching module 71. One end of the sixth switch 56 is electrically connected to the first terminal 50a, and the other end is electrically connected to the fourth matching module 72. Among them, the third switch 53 , the fourth switch 54 , the fifth switch 55 and the sixth switch 56 are packaged inside the antenna switch 50 . Antenna switch 50 may be an RFC switch.

In this way, the first switch 51 , the second switch 52 , the third switch 53 , the fourth switch 54 , the fifth switch 55 and the sixth switch 56 are arranged in the same antenna switch 50 to facilitate user operation.

The antenna switch 50 may also include a third terminal 50c, a fourth terminal 50d and a fifth terminal 50e. One end of the third terminal 50c is electrically connected to the third switch 53 and the fourth switch 54, and the other end is electrically connected to the third switch 53 and the fourth switch 54. The two matching modules 60 are electrically connected. One end of the fourth terminal 50d is electrically connected to the fifth switch 55, and the other end is electrically connected to the third matching module 71. One end of the fifth terminal 50e is electrically connected to the sixth switch 56, and the other end is electrically connected to the fourth matching module 72.

It can be understood that in some embodiments, the antenna device 100 may include the first matching module 40 , the second matching module 60 , the third matching module 71 and the fourth matching module 72 at the same time, and the antenna switch 50 may include the first switch at the same time. 51. The second switch 52, the third switch 53, the fourth switch 54, the fifth switch 55 and the sixth switch 56, as shown in Figures 8 and 9.

In Figure 9, the USID pin is used to identify the identification code of the device controlled by the mobile industry processor interface (mobile industry processor interface, MIPI); the GND pin is used to ground the antenna switch 50; the SDATA pin is a data interface for input control data; the VIO pin is connected to the power supply and is used to input the power signal; the SCLK pin is used to input the clock control signal.

Among them, the first matching module 40 and the second matching module 60 can be used to change the equivalent electric current of the second radiator 30 with the cooperation of the first switch 51 , the second switch 52 , the third switch 53 and the fourth switch 54 . The length then changes the excitation signal to excite the first radiator 10 and/or the second radiator 30 to produce different resonance frequency bands, so that the first radiator 10 and the second radiator 30 can form rich CA or ENDC combination states, which can better Covering each frequency band effectively improves the communication capability of the antenna device 100.

The third matching module 71 and the third matching module 71 can be used to change the equivalent electrical length of the first radiator 10 with the cooperation of the fifth switch 55 and the sixth switch 56 respectively. The first matching module 40 and the second matching module 60, with the cooperation of the first switch 51, the second switch 52, the third switch 53 and the fourth switch 54, can also increase the radiation length of the first radiator 10, thereby improving the antenna The radiation diameter of the device 100 improves the radiation efficiency of the antenna device 100 .

Referring to FIG. 10 , in some embodiments, the antenna device 100 further includes a fifth matching module 80 , and the feed source 20 is electrically connected to the feed point 11 through the fifth matching module 80 . The fifth matching module 80 is used to perform impedance matching on the first radiator 10 to adjust the resonance efficiency and radiation efficiency of the first radiator 10 . The fifth matching module 80 may be an impedance circuit, specifically one or more impedance elements such as a capacitor, an inductor or a resistor, which may be set according to actual needs and is not limited here.

Referring to FIG. 11 , in some embodiments, the antenna device 100 further includes a sixth matching module 90 . One end of the sixth matching module 90 is electrically connected between the first radiator 10 and the first switch 51 , and the other end is grounded.

In this way, under the excitation of the excitation signal, the setting of the sixth matching module 90 can change the resonance efficiency and radiation efficiency, so that the excitation signal causes the first radiator 10 to support a resonant frequency band different from the first resonant frequency band, and the first radiator 10 It can form rich CA states or ENDC combination states with the second radiator 30, and can better cover various frequency bands and thereby improve the communication capability of the antenna device 100.

The sixth matching module 90 may be an impedance circuit, and specifically may be one or more impedance elements such as capacitors, inductors, or resistors. The sixth matching module 90 may be set according to actual needs, and is not limited here.

Referring to FIG. 12 , it can be understood that in some embodiments, the antenna device 100 may simultaneously include a first matching module 40 , a second matching module 60 , a third matching module 71 , a fourth matching module 72 , and a fifth matching module 72 . module 80 and the sixth matching module 90 , the antenna switch 50 simultaneously includes a first switch 51 , a second switch 52 , a third switch 53 , a fourth switch 54 , a fifth switch 55 and a sixth switch 56 .

Among them, the third matching module 71 with the cooperation of the fifth switch 55 and the fourth matching module 72 with the cooperation of the sixth switch 56 can be used to change the equivalent electrical length of the first radiator 10 . The fifth matching module 80 and the sixth matching module 90 can change the resonance efficiency and radiation efficiency of the first radiator 10 .

The first matching module 40 and the second matching module 60 can be used to change the equivalent electrical length of the second radiator 30 with the cooperation of the first switch 51 , the second switch 52 , the third switch 53 and the fourth switch 54 . Changing the excitation signal excites the first radiator 10 and/or the second radiator 30 to produce different resonance frequency bands, so that the first radiator 10 and the second radiator 30 can form rich CA states, which can better cover various frequency bands. The communication capability of the antenna device 100 is improved.

The first matching module 40 and the second matching module 60, with the cooperation of the first switch 51, the second switch 52, the third switch 53 and the fourth switch 54, can also increase the radiation length of the first radiator 10, thereby improving the antenna The radiation diameter of the device 100 improves the radiation efficiency of the antenna device 100 .

In summary, the adjustment of the radiation equivalent electrical length, resonance efficiency, etc. of the first radiator 10 and the adjustment of the equivalent electrical length of the second radiator 30 enable the first radiator 10 to communicate with the second radiator 30 Rich CA states are formed to make the radiation pattern of the antenna device 100 more diverse, increase the communication bandwidth covered by the antenna device 100, and improve the communication capability of the antenna device 100 from two aspects.

Please refer to FIG. 13 , which is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present application. The electronic device 1000 includes a housing 200 and the above-mentioned antenna device 100. The antenna device 100 is provided in the housing 200. For example, each radiator of the antenna device 100 may be disposed on the housing 200 , and other electronic components or modules of the antenna device 100 may be disposed inside the housing 200 .

In some embodiments, the housing 200 may include a metal middle frame 201 and a metal frame 202 , and the metal frame 202 is disposed around the periphery of the metal middle frame 201 . Among them, the metal middle frame 201 and the metal frame 202 can be made of metal or alloy materials such as aluminum alloy, magnesium alloy, etc. The metal middle frame 201 can form the main structure of the electronic device 1000 and is used to carry functional modules such as a motherboard, a camera module, and a battery. The metal frame 202 may form a side frame of the electronic device 1000 .

The metal frame 202 includes spaced first metal branches 2021 and second metal branches 2022 . In practical applications, the first metal branches 2021 and the second metal branches 2022 can be formed by slits in the metal frame 202 . The first metal stub 2021 may be used to form the first radiator 10 , and the second metal stub 2022 may be used to form the second radiator 30 . Therefore, the metal frame 202 can be reused to form each radiator, and there is no need to separately provide a radiator, thus simplifying the design of the antenna device 100 .

In some embodiments, the metal frame 202 includes a first side 210 and a second side 220 that are connected. The length of the first side 210 is greater than the length of the second side 220 , that is, the first side 210 can be understood as a long side, and the second side 220 can be understood as a short side.

When the user uses the electronic device 100 in landscape orientation, such as playing games in landscape orientation, the user's hands usually hold both ends of the electronic device (the left and right ends when the electronic device is used in landscape orientation). In this case, WiFi The antenna is easily held by the user's hand, affecting the performance of the WiFi antenna. Therefore, the antenna device 100 is usually designed on the top of the electronic device 1000 , that is, on the short side of the electronic device 1000 .

The so-called top refers to the upper part of the electronic device 1000 when used in portrait orientation. For example, when the electronic device 1000 is placed in portrait orientation, the top of the electronic device 1000 is usually away from the ground. When the antenna device 100 is disposed on the top, the radiation efficiency of the upper hemisphere of the antenna device 100 is better, so that the electronic device 1000 has a better communication effect. In this embodiment, the electronic device 1000 is in the vertical screen state as an example, as shown in FIG. 13 . It can be understood that in other embodiments, the electronic device 1000 can be used in a vertical screen state, a horizontal screen state, or even a tilted state.

In the description of this application, it needs to be understood that terms such as “first” and “second” are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technology. Number of features.

It should be noted that the “electrical connection” in the embodiment of the present application may be a direct connection between two electrical components to achieve an electrical connection, or it may be an indirect connection to achieve an electrical connection. For example, A and B are electrically connected, either by directly connecting A and B to achieve electrical connection, or by indirectly connecting A and B through one or more other electrical components.

The antenna device and electronic equipment provided by the embodiments of the present application have been introduced in detail above. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present application. In summary, the content of this description should not be understood as a limitation of the present application.

Claims (10)

1. An antenna device, comprising:

a first radiator including a feeding point;

the feed source is electrically connected with the feed point and is used for feeding an excitation signal to the first radiator through the feed point so as to excite the first radiator to support a first resonant frequency band;

a gap is formed between the second radiator and the first radiator, and the second radiator is electromagnetically coupled with the first radiator through the gap;

the first matching module is electrically connected with the second radiator;

one end of the first switch is electrically connected with the first radiator, and the other end of the first switch is electrically connected with the first matching module; and

one end of the second switch is electrically connected with the first matching module, and the other end of the second switch is grounded;

when the first switch is closed and the second switch is opened, the first radiator, the first matching module and the second radiator are electrically connected to increase the radiation length of the first radiator;

when the first switch is opened and the second switch is closed, the second radiator is grounded through the second switch, so that the excitation signal excites the second radiator to support a second resonance frequency band.

2. The antenna device of claim 1, wherein the antenna device comprises a second matching module, a third switch, and a fourth switch;

the second matching module is electrically connected with the second radiator, one end of the third switch is electrically connected with the first radiator, and the other end of the third switch is electrically connected with the second matching module; one end of the fourth switch is electrically connected with the second matching module, and the other end of the fourth switch is grounded;

when the third switch is closed and the fourth switch is opened, the first radiator, the second matching module and the second radiator are electrically connected so as to increase the radiation length of the first radiator;

when the third switch is turned off and the fourth switch is turned on, the second radiator is grounded through the fourth switch, so that the excitation signal excites the second radiator to support a third resonance frequency band.

3. An antenna arrangement according to claim 2, characterized in that:

the first matching module comprises one of a capacitor and an inductor;

the second matching module comprises the other of capacitance and inductance.

4. An antenna arrangement according to claim 2, characterized in that:

the first resonant frequency band covers one of a B3 frequency band or a B1 frequency band;

the second resonant frequency band covers one of an N1 frequency band, an N40 frequency band or an N78 frequency band;

the third resonant frequency band covers one of an N1 frequency band, an N40 frequency band, or an N78 frequency band.

5. The antenna device according to any one of claims 1 to 4, further comprising a third matching module and a fifth switch, the third matching module being grounded;

one end of the fifth switch is electrically connected with the first radiator, the other end of the fifth switch is electrically connected with the third matching module, and the fifth switch can be closed or opened to enable the third matching module to be electrically connected with or disconnected from the first radiator.

6. The antenna device of claim 5, further comprising a fourth matching module and a sixth switch, the fourth matching module being grounded;

one end of the sixth switch is electrically connected with the first radiator, the other end of the sixth switch is electrically connected with the fourth matching module, and the sixth switch can be closed or opened to enable the fourth matching module to be electrically connected with or disconnected from the first radiator;

the third matching module and the fourth matching module have different impedances.

7. The antenna device according to any one of claims 1 to 4, characterized in that:

the antenna device comprises an antenna switch, the antenna switch comprises a first switch and a second switch, and the first switch and the second switch are packaged inside the antenna switch.

8. The antenna device according to any one of claims 1 to 4, further comprising a fifth matching module, wherein the feed is electrically connected to the feed point through the fifth matching module.

9. The antenna device according to any one of claims 1 to 4, further comprising a sixth matching module having one end electrically connected between the first radiator and the first switch and the other end grounded.

10. An electronic device, comprising:

a housing;

an antenna device provided to the housing, the antenna device being the antenna device according to any one of claims 1 to 9.