Antenna assembly and intelligent terminal

Abstract

The invention provides an antenna assembly and an intelligent terminal. The antenna assembly comprises a plurality of antenna units, a phase adjusting unit and a filtering network. The plurality of antenna units at least comprise a first antenna unit and a second antenna unit which are adjacently arranged; the phase adjusting unit is electrically connected with the first antenna unit and is used for changing the direction of the induction current generated by the second antenna unit when the first antenna unit works in the working frequency band; and the filter network is electrically connected between the first antenna unit and the second antenna unit and is used for enabling the induction current to flow outside the working frequency band so as to reduce the intensity of the induction current in the working frequency band, thereby reducing the coupling effect between adjacent antennas, improving the isolation between the adjacent antennas and improving the performance of the antennas.

Description

Technical Field

[0001] The present application relates to the field of communication technologies, and particularly to an antenna assembly and an intelligent terminal. Background Art

[0002] With the increasing development of communication technologies, the demand for communication performance of terminal devices is increasing day by day. And with the advent of the 5G era, the number of antennas required on terminal devices has increased sharply. Due to the limited space on terminal devices, even if the antennas are miniaturized, the distance between antennas is further compressed, resulting in a strong mutual coupling effect between adjacent antennas arranged in the same area, greatly affecting the isolation of the antenna system, leading to a decline in antenna performance and affecting communication performance.

[0003] The foregoing description is for providing general background information and does not necessarily constitute prior art. Summary of the Invention

[0004] In view of the above technical problems, the present application provides an antenna assembly and an intelligent terminal, which can improve the isolation between adjacent antennas and enhance antenna performance.

[0005] To solve the above technical problems, the present application provides an antenna assembly, including a plurality of antenna units, a phase adjustment unit, and a filtering network; wherein,

[0006] The plurality of antenna units at least include a first antenna unit and a second antenna unit arranged adjacent to each other;

[0007] The phase adjustment unit is electrically connected to the first antenna unit and is configured to change the direction of the induced current generated in the second antenna unit when the first antenna unit operates in the operating frequency band;

[0008] The filtering network is electrically connected between the first antenna unit and the second antenna unit and is configured to allow the induced current to flow in outside the operating frequency band to reduce the intensity of the induced current within the operating frequency band.

[0009] Optionally, the first antenna unit includes a first radiator and a first signal source; the first radiator includes a first free end and a second free end, the first free end is electrically connected to the first signal source, and the second free end is electrically connected to the phase adjustment unit and the filtering network.

[0010] Optionally, the phase adjustment unit includes a first capacitor, one end of the first capacitor is electrically connected to the second free end, and the other end of the first capacitor is grounded.

[0011] Optionally, the first antenna unit includes a first radiator and a first signal source; the first radiator includes a first free end and a second free end, the first signal source is electrically connected to the first radiator at a position close to the second free end and located between the first free end and the second free end, the first free end and the second free end are respectively electrically connected to the phase adjustment unit, and the second free end is also electrically connected to the filtering network.

[0012] Optionally, the phase adjustment unit includes a first inductor and a second capacitor. One end of the first inductor is electrically connected to the second free end, the other end of the first inductor is grounded, one end of the second capacitor is electrically connected to the first free end, and the other end of the second capacitor is grounded.

[0013] Optionally, when the second antenna unit and the first antenna unit operate in the same operating frequency band, the second antenna unit includes a second radiator and a second signal source; the second radiator includes a third free end and a first grounding end, the third free end is electrically connected to the second signal source and the filtering network, and the first grounding end is grounded.

[0014] Optionally, the antenna assembly includes a plurality of the filtering networks, and each filtering network corresponds to an operating frequency band of the second antenna unit;

[0015] The second antenna unit includes a second radiator, a second signal source and a matching tuning unit; the second radiator includes a third free end and a first grounding end, the third free end is electrically connected to the second signal source and the matching tuning unit, the matching tuning unit is electrically connected to a plurality of the filtering networks, and the first grounding end is grounded.

[0016] Optionally, the matching tuning unit includes a tuner and a plurality of ground branch matching fronts. One end of the tuner is electrically connected to the third free end, and the other end of the tuner is electrically connected to the plurality of ground branch matching fronts; the plurality of filtering networks are respectively electrically connected to the corresponding ground branch matching fronts.

[0017] Optionally, the filtering network is a band-pass filtering network or a band-stop filtering network.

[0018] This application also provides an intelligent terminal, including the antenna assembly as described above.

[0019] As described above, the antenna assembly and the smart terminal of the present application include a plurality of antenna units, a phase adjustment unit, and a filtering network; the plurality of antenna units at least include a first antenna unit and a second antenna unit arranged adjacent to each other; the phase adjustment unit is electrically connected to the first antenna unit and is configured to change the direction of the induced current generated in the second antenna unit when the first antenna unit operates in the operating frequency band; the filtering network is electrically connected between the first antenna unit and the second antenna unit and is configured to allow the induced current to flow in outside the operating frequency band, so as to reduce the intensity of the induced current within the operating frequency band, thereby reducing the coupling effect between adjacent antennas, improving the isolation between adjacent antennas, and enhancing the performance of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic diagram of the hardware structure of a smart terminal for implementing various embodiments of the present application;

[0022] Figure 2 Schematic diagram of a communication network system architecture provided by an embodiment of the present application;

[0023] Figure 3 Schematic diagram of the structure of the antenna assembly shown according to the first embodiment;

[0024] Figure 4 Schematic diagram of the current distribution of the antenna assembly in the prior art;

[0025] Figure 5 Schematic diagram of the current distribution of the antenna assembly shown according to the first embodiment;

[0026] Figure 6 Schematic diagram of the structure of the filtering network shown according to the first embodiment;

[0027] Figure 7 Schematic diagram of the simulation result of the transmission characteristics of the filtering network shown according to the first embodiment;

[0028] Figure 8 Schematic diagram of the comparison of S parameters of the antenna assembly before and after the filtering network is set according to the first embodiment;

[0029] Figure 9 Schematic diagram of the structure of the antenna assembly shown according to the second embodiment;

[0030] Figure 10 is a schematic diagram of the current distribution of the antenna assembly shown in the second embodiment;

[0031] Figure 11 is a schematic diagram of the structure of the filter network shown in the second embodiment;

[0032] Figure 12 is a schematic diagram of the comparison of S parameters of the antenna assembly before and after setting the filter network shown in the second embodiment;

[0033] Figure 13 is a schematic diagram of the structure of the antenna assembly shown in the third embodiment;

[0034] Figure 14 is a schematic diagram of the comparison of S parameters of the antenna assembly before and after setting the filter network shown in the third embodiment.

[0035] The realization of the purpose of this application, functional features and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Through the above-mentioned accompanying drawings, the specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0036] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are merely examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element. In addition, components, features, and elements with the same name in different embodiments of this application may have the same meaning or different meanings, and their specific meanings need to be determined based on their explanations in the specific embodiments or further in combination with the context of the specific embodiments.

[0038] It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". Furthermore, as used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of the stated features, steps, operations, elements, components, items, kinds, and / or groups, but do not preclude the presence, occurrence or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" and the like used in this application may be interpreted inclusively, or mean any one or any combination. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C", and again, "A, B or C" or "A, B and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C". An exception to this definition will occur only when the combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

[0039] It should be understood that the specific embodiments described herein are merely for explaining the present application and are not used to limit the present application.

[0040] In the following description, the suffixes such as "module", "component" or "unit" used to denote elements are only for the convenience of description of the present application and have no specific meaning in themselves. Therefore, "module", "component" or "unit" can be used interchangeably.

[0041] The intelligent terminal can be implemented in various forms. For example, the intelligent terminal described in this application may include intelligent terminals such as mobile phones, tablet computers, laptop computers, palmtop computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs, desktop computers, etc.

[0042] In the following description, the mobile terminal will be taken as an example for illustration. Those skilled in the art will understand that, except for the elements specifically for mobile purposes, the structure according to the embodiments of the present application can also be applied to fixed-type terminals.

[0043] Please refer to Figure 1 which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 100 may include components such as an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (audio / video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art can understand that Figure 1 the mobile terminal structure shown in

[0044] does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 1 The following specifically introduces each component of the mobile terminal:

[0045] The RF unit 101 can be used for receiving and transmitting signals during information reception or call processes. Specifically, after receiving the downlink information from the base station, it is given to the processor 110 for processing; in addition, the uplink data is sent to the base station. Usually, the RF unit 101 includes but is not limited to antennas, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. In addition, the RF unit 101 can also communicate with the network and other devices through wireless communication. The above wireless communication can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (CodeDivision Multiple Access 2000), WCDMA (Wideband Code DivisionMultiple Access), TD-SCDMA (Time Division-Synchronous CodeDivision Multiple Access), FDD-LTE (Frequency DivisionDuplexing-Long Term Evolution), TDD-LTE (Time DivisionDuplexing-Long Term Evolution), and 5G, etc.

[0046] WiFi belongs to short - range wireless transmission technology. Through the WiFi module 102, the mobile terminal can help users send and receive emails, browse the web, and access streaming media, etc. It provides users with wireless broadband Internet access. Although Figure 1 the WiFi module 102 is shown, it can be understood that it does not belong to the essential components of the mobile terminal and can be completely omitted within the scope of not changing the essence of the invention as needed.

[0047] The audio output unit 103 can convert the audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in modes such as a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, etc. Moreover, the audio output unit 103 can also provide an audio output related to a specific function executed by the mobile terminal 100 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 103 can include a speaker, a buzzer, etc.

[0048] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 can include a Graphics Processing Unit (GPU) 1041 and a microphone 1042. The graphics processor 1041 processes the image data of a still picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frames can be displayed on the display unit 106. The processed image frames can be stored in the memory 109 (or other storage media) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in operating modes such as a phone call mode, a recording mode, a voice recognition mode, etc., and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be output via the radio frequency unit 101 to a mobile communication base station in the case of a phone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) the noise or interference generated during the reception and transmission of audio signals.

[0049] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary, and can be used in applications for identifying the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that the mobile phone can also be configured with, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be elaborated here.

[0050] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

[0051] The user input unit 107 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function controls of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect touch operations of the user on or near it (such as operations of the user using a finger, a stylus, or any suitable object or accessory on or near the touch panel 1071), and drive the corresponding connection device according to a pre-set program. The touch panel 1071 can include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the touch position of the user and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into touch point coordinates, and then sends it to the processor 110, and can receive and execute the commands sent by the processor 110. In addition, the touch panel 1071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, etc., and specific details are not limited here.

[0052] Optionally, the touch panel 1071 may cover the display panel 1061. After the touch panel 1071 detects a touch operation on or near it, it is transmitted to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in Figure 1 , the touch panel 1071 and the display panel 1061 are implemented as two independent components to realize the input and output functions of the mobile terminal, but in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal, and the specific implementation here is not limited.

[0053] The interface unit 108 serves as an interface through which at least one external device can be connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headset port, and so on. The interface unit 108 can be used to receive inputs from external devices (such as data information, power, etc.) and transmit the received inputs to one or more elements within the mobile terminal 100 or can be used to transmit data between the mobile terminal 100 and external devices.

[0054] The memory 109 can be used to store software programs and various data. The memory 109 mainly includes a program storage area and a data storage area. Optionally, the program storage area can store an operating system, applications required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, phone book, etc.). In addition, the memory 109 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0055] The processor 110 is the control center of the mobile terminal, connecting various parts of the entire mobile terminal using various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it executes various functions of the mobile terminal and processes data, thereby monitoring the mobile terminal as a whole. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 110.

[0056] The mobile terminal 100 may further include a power source 111 (such as a battery) for supplying power to various components. Preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to manage functions such as charging, discharging, and power consumption management through the power management system.

[0057] Although Figure 1 not shown, the mobile terminal 100 may further include a Bluetooth module, etc., which will not be elaborated here.

[0058] To facilitate the understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based will be described below.

[0059] Please refer to Figure 2 , Figure 2 , which is an architecture diagram of a communication network system provided by an embodiment of the present application. The communication network system is an LTE system of the general mobile communication technology. The LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an operator's IP service 204 that are sequentially communicatively connected.

[0060] Optionally, the UE 201 may be the above terminal 100, which will not be elaborated here.

[0061] The E-UTRAN 202 includes an eNodeB 2021 and other eNodeBs 2022, etc. Optionally, the eNodeB 2021 may be connected to other eNodeBs 2022 through a backhaul (such as an X2 interface), the eNodeB 2021 is connected to the EPC 203, and the eNodeB 2021 may provide access for the UE 201 to the EPC 203.

[0062] The EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, the MME 2031 is a control node that processes signaling between the UE 201 and the EPC 203 and provides bearer and connection management. The HSS 2032 is used to provide some registers to manage functions such as a home location register (not shown in the figure) and stores some user-specific information such as service characteristics and data rate. All user data can be sent through the SGW 2034. The PGW 2035 can provide IP address allocation for the UE 201 and other functions. The PCRF 2036 is a policy and charging control policy decision point for service data flows and IP bearer resources, and it selects and provides available policy and charging control decisions for a policy and charging enforcement function unit (not shown in the figure).

[0063] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services, etc.

[0064] Although the above has been described by taking the LTE system as an example, those skilled in the art should be aware that this application is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems (such as 5G), etc., which are not limited herein.

[0065] Based on the above mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0066] The antenna assembly provided by the embodiment of the present application includes a plurality of closely arranged antenna units, as well as a phase adjustment unit and a filtering network electrically connected to the antenna units. Among at least two adjacent antenna units, the phase adjustment unit is electrically connected to at least one antenna unit. When the connected antenna unit operates in the operating frequency band, the direction of the induced current generated in another adjacent antenna unit is changed. The filtering network is connected between two adjacent antenna units. By establishing a current path outside the operating frequency band, the induced current flows in outside the operating frequency band, so as to reduce the intensity of the induced current within the operating frequency band, thereby reducing the coupling effect between adjacent antennas, improving the isolation between adjacent antennas, and enhancing the performance of the antenna.

[0067] The first embodiment

[0068] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the antenna assembly shown according to the first embodiment.

[0069] In this embodiment, the antenna assembly includes a first antenna unit 310, a second antenna unit 320, a phase adjustment unit 330, and a filtering network M. In this embodiment, the first antenna unit 310 and the second antenna unit 320 operate in the same operating frequency band, such as the B3 frequency band.

[0070] Specifically, the first antenna unit 310 includes a first radiator 311 and a first signal source 312. The first radiator 311 includes a first free end 3111 and a second free end 3112. The first free end 3111 is electrically connected to one end of the first signal source 312, and the other end of the first signal source 312 is electrically connected to a first radio frequency terminal (not shown in the figure). The second free end 3112 is electrically connected to the phase adjustment unit 330 and the first connection end of the filtering network M.

[0071] The second antenna unit 320 includes a second radiator 321 and a second signal source 322. The second radiator 321 includes a third free end 3211 and a first grounding end 3212. The third free end 3211 is close to the second free end 3112 in space, and a first gap 400 is provided therebetween. Among them, the first gap 400 is not less than 0.5 mm. The third free end 3211 is electrically connected to one end of the second signal source 322 and the second connection end of the filtering network M, and the other end of the second signal source 322 is electrically connected to a second radio frequency terminal (not shown in the figure). The first grounding end 3212 is grounded.

[0072] Among them, the first radio frequency terminal and the second radio frequency terminal are disposed on the main circuit board 500 of the smart terminal. The first signal source 312 and the second signal source 322 receive the excitation current output from the first radio frequency terminal and the second radio frequency terminal, and after amplification, filtering, and matching tuning, excite the first radiator 311 and the second radiator 321 to generate electromagnetic wave signals of corresponding operating frequencies, which are coupled with the electromagnetic wave signals of the same frequency in free space to achieve signal transmission.

[0073] Specifically, the phase adjustment unit 330 includes a first capacitor C1. One end of the first capacitor C1 is electrically connected to the second free end 3112 of the first radiator 311, and the other end of the first capacitor C1 is grounded. The capacitance value of the first capacitor C1 is usually in a conducting state for the operating frequency band in which the first antenna unit 310 operates.

[0074] When the phase adjustment unit 330 and the filter network M are not provided, the first antenna unit 310 and the second antenna unit 320 are designed as a conventional dual-antenna system. When the first antenna unit 310 operates in its operating frequency band, an induced current having the same direction as that of the first radiator 311 is generated on the second radiator 321. As Figure 4 shown, at this time, the induced current will flow into the second signal source 322, generating a mutual coupling effect with the second antenna unit 320, greatly affecting the isolation between adjacent antennas, resulting in a decline in the performance of the antenna and affecting the communication performance.

[0075] In this embodiment, please refer to Figure 3 and Figure 5 simultaneously. According to the operating frequency bands of the first antenna unit 310 and the second antenna unit 320, the first capacitor C1 with a corresponding capacitance value is set as a phase adjuster, so that when the first antenna unit 310 operates, an induced current having a direction opposite to that of the first radiator 311 is generated on the second radiator 321. At this time, through the filter network M connected between the first radiator 311 and the second radiator 321, a current channel outside the operating frequency band is established between the first antenna unit 310 and the second antenna unit 320, so that the induced current flows in outside the operating frequency band to reduce the intensity of the induced current within the operating frequency band, thereby reducing the coupling effect between adjacent antennas, and thus improving the isolation between adjacent antennas when operating at the same frequency while ensuring the operating performance of the antenna.

[0076] Optionally, the filter network M in this embodiment is set as a band-pass filter network, as Figure 6As shown, the band-pass filter network M may include a second inductor L2, a third inductor L3, and a third capacitor C3. The first end of the second inductor L2 serves as the first connection end of the filter network M. The second end of the second inductor L2 is electrically connected to the first end of the third inductor L3. The second end of the third inductor L3 serves as the second connection end of the filter network M. The first end of the third capacitor C3 is electrically connected to the second end of the second inductor L2 and the first end of the third inductor L3. The second end of the third capacitor C3 is grounded. In some other embodiments, the filter network M may also be set as a band-stop filter network, and the specific circuit structure can be adjusted according to the actual situation, which is not limited in this application.

[0077] Figure 7 is a schematic diagram of the simulation result of the transmission characteristic of the filter network shown in the first embodiment. As Figure 7 shown, the filter network in this embodiment has good signal transmission ability within a certain frequency band and shows good suppression ability for signals in other frequency bands. Therefore, this filter network has good frequency selectivity. Figure 8 is a schematic diagram of the comparison of S parameters of the antenna assembly before and after setting the filter network according to the first embodiment; Figure 8 In it, S1,1with M is the reflection coefficient of the first antenna unit after setting the filter network, S1,1without M is the reflection coefficient of the first antenna unit without setting the filter network, S2,1with M is the isolation degree between the first antenna unit and the second antenna unit after setting the filter network, S2,1without M is the isolation degree between the first antenna unit and the second antenna unit without setting the filter network, S2,2withM is the reflection coefficient of the second antenna unit after setting the filter network, and S2,2without M is the reflection coefficient of the second antenna unit without setting the filter network. As Figure 8 shown, after setting the filter network in this embodiment in the first antenna unit and the second antenna unit, the reflection coefficients of the two antenna units themselves change little before and after, while the isolation degree has been greatly optimized, that is, the antenna assembly in this embodiment can improve the isolation degree when adjacent antennas work on the same frequency while ensuring the working performance of the antenna.

[0078] Second Embodiment

[0079] Please refer to Figure 9 , Figure 9 is a schematic diagram of the structure of the antenna assembly shown in the second embodiment.

[0080] In this embodiment, still taking the first antenna unit 310 and the second antenna unit 320 working in the same working frequency band, such as the B1 frequency band, as an example, the antenna assembly in this application is introduced.

[0081] Specifically, the antenna assembly provided in this embodiment includes a first antenna unit 310, a second antenna unit 320, a phase adjustment unit 330, and a filter network M.

[0082] The first antenna unit 310 includes a first radiator 311 and a first signal source 312. The first radiator 311 includes a first free end 3111 and a second free end 3112. One end of the first signal source 312 is electrically connected to the first radiator 311 at a position close to the second free end 3112 and is located between the first free end 3111 and the second free end 3112. The other end of the first signal source 312 is electrically connected to a first radio frequency terminal (not shown in the figure). The first free end 3111 and the second free end 3112 are respectively electrically connected to the phase adjustment unit 330, and the second free end 3112 is also electrically connected to the first connection end of the filter network M.

[0083] The second antenna unit 320 includes a second radiator 321 and a second signal source 322. The second radiator 321 includes a third free end 3211 and a first ground end 3212. The third free end 3211 is close to the second free end 3112 in space, and a first gap 400 is provided therebetween. Among them, the first gap 400 is not less than 0.5 mm. The third free end 3211 is electrically connected to one end of the second signal source 322 and the second connection end of the filter network M. The other end of the second signal source 322 is electrically connected to a second radio frequency terminal (not shown in the figure), and the first ground end 3212 is grounded.

[0084] Specifically, the phase adjustment unit 330 includes a first inductor L1 and a second capacitor C2. One end of the first inductor L1 is electrically connected to the second free end 3112 of the first radiator 311, the other end of the first inductor L1 is grounded, one end of the second capacitor C2 is electrically connected to the first free end 3111 of the first radiator 311, and the other end of the second capacitor C2 is grounded.

[0085] In this embodiment, according to the operating frequency bands of the first antenna unit 310 and the second antenna unit 320, a first inductor L1 with a corresponding inductance value is set, and in cooperation with a second capacitor C2 with a corresponding capacitance value, when the first antenna unit 310 operates, an induced current opposite to the direction of the first radiator 311 can be generated on the second radiator 321, as Figure 10 shown. At this time, through the filter network M connected between the first radiator 311 and the second radiator 321, a current channel outside the operating frequency band is established between the first antenna unit 310 and the second antenna unit 320, so that the induced current flows in outside the operating frequency band to reduce the intensity of the induced current within the operating frequency band, thereby reducing the coupling effect between adjacent antennas, and thus improving the isolation degree when adjacent antennas operate at the same frequency while ensuring the operating performance of the antenna.

[0086] Optionally, the filtering network M in this embodiment is set as a band-pass filtering network. As Figure 11 shown, the band-pass filtering network M may include a fourth capacitor C4, a fifth capacitor C5, and a fourth inductor L4. The first end of the fourth capacitor C4 serves as the first connection end of the filtering network M. The second end of the fourth capacitor C4 is electrically connected to the first end of the fifth capacitor C5. The second end of the fifth capacitor C5 serves as the second connection end of the filtering network M. The first end of the fourth inductor L4 is electrically connected to the second end of the fourth capacitor C4 and the first end of the fifth capacitor C5. The second end of the fourth inductor L4 is grounded. In some other embodiments, the filtering network M may also be set as a band-stop filtering network, and the specific circuit structure can be adjusted according to the actual situation, which is not limited in this application.

[0087] Figure 12 is a schematic diagram of the comparison of S-parameters of the antenna assembly before and after setting the filtering network according to the second embodiment; Figure 12 In it, S1,1with M is the reflection coefficient of the first antenna unit after setting the filtering network, S1,1without M is the reflection coefficient of the first antenna unit without setting the filtering network, S2,1with M is the isolation degree between the first antenna unit and the second antenna unit after setting the filtering network, S2,1without M is the isolation degree between the first antenna unit and the second antenna unit without setting the filtering network, S2,2with M is the reflection coefficient of the second antenna unit after setting the filtering network, and S2,2without M is the reflection coefficient of the second antenna unit without setting the filtering network. As Figure 12 shown, after setting the filtering network provided in this embodiment in the first antenna unit and the second antenna unit, the reflection coefficients of the two antenna units themselves change little before and after, but the isolation degree has been greatly optimized, that is, the antenna assembly in this embodiment can improve the isolation degree when adjacent antennas work at the same frequency while ensuring the working performance of the antenna.

[0088] Third Embodiment

[0089] Please refer to Figure 13 , Figure 13 is a schematic diagram of the structure of the antenna assembly according to the third embodiment.

[0090] In some application scenarios, the second antenna unit 320 needs to meet not only working in a single frequency band, but also working in multiple different working frequency bands. In this embodiment, taking the second antenna unit 320 that can work in two different working frequency bands as an example, the antenna assembly in this application is introduced.

[0091] Specifically, the antenna assembly provided in this embodiment includes a first antenna unit 310, a second antenna unit 320, a phase adjustment unit 330, a first filter network M1, and a second filter network M2. Among them, the first filter network M1 and the second filter network M2 respectively correspond to two different operating frequency bands of the second antenna unit 320.

[0092] The first antenna unit 310 includes a first radiator 311 and a first signal source 312. The first radiator 311 includes a first free end 3111 and a second free end 3112. The first free end 3111 is electrically connected to one end of the first signal source 312, and the other end of the first signal source 312 is electrically connected to the first radio frequency terminal. The second free end 3112 is electrically connected to the phase adjustment unit 330, the first connection end of the first filter network M1, and the first connection end of the second filter network M2.

[0093] The second antenna unit 320 includes a second radiator 321, a second signal source 322, and a matching and tuning unit 323. The second radiator 321 includes a third free end 3211 and a first grounding end 3212. The third free end 3211 is close to the second free end 3112 in space, and a first gap 400 is provided therebetween. The third free end 3211 is electrically connected to one end of the second signal source 322 and the matching and tuning unit 323. The matching and tuning unit 323 is electrically connected to the first filter network M1 and the second filter network M2 respectively, and the first grounding end 3212 is grounded.

[0094] The phase adjustment unit 330 includes a first capacitor C1. One end of the first capacitor C1 is electrically connected to the second free end 3112 of the first radiator 311, and the other end of the first capacitor C1 is grounded.

[0095] The matching and tuning unit 323 is used to tune the operating frequency of the second antenna unit 320 so that it can switch between different operating frequency bands. The matching and tuning unit 323 includes a tuner SW, a first ground branch matching front end 3231, and a second ground branch matching front end 3232. One end of the tuner SW is electrically connected to the third free end 3211 of the second radiator 321, and the other end of the tuner SW is electrically connected to the first ground branch matching front end 3231 and the second ground branch matching front end 3232 respectively. The first filter network M1 is electrically connected to the corresponding first ground branch matching front end 3231, and the second filter network M2 is electrically connected to the corresponding second ground branch matching front end 3232. The first filter network M1 and the second filter network M2 in this embodiment can adopt the circuit structure of the filter network described in the first embodiment, and this is not elaborated in this embodiment.

[0096] In this embodiment, when the second antenna unit 320 switches the operating frequency band through the matching tuning unit 323, the corresponding filtering network can establish different current channels for different operating frequency bands to reduce the intensity of the induced current within the operating frequency band, thereby reducing the coupling effect between adjacent antennas. Thus, while ensuring the operating performance of the antenna, the isolation degree when adjacent antennas operate in different frequency bands is improved.

[0097] Figure 14 FIG. is a schematic diagram comparing S parameters of the antenna assembly before and after setting the filtering network according to the third embodiment. As Figure 14 shown, when the second antenna unit switches to the B1 operating frequency band through the matching tuning unit, after setting the filtering network in this embodiment in the first antenna unit and the second antenna unit, the reflection coefficients of the two antenna units themselves change little before and after, while the isolation degree is greatly optimized. That is, the antenna assembly in this embodiment can improve the isolation degree when adjacent antennas operate in different frequency bands while ensuring the operating performance of the antenna.

[0098] This application also provides an intelligent terminal, including the antenna assembly as described above.

[0099] In the embodiment of the intelligent terminal provided by this application, it may include all the technical features of any of the above antenna assembly embodiments. The content of the specification expansion and explanation is basically the same as that of the embodiments of the above method, and will not be elaborated here.

[0100] It can be understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided by the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as is known to those of ordinary skill in the art, with the evolution of the system architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0101] The serial numbers of the above embodiments of this application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0102] The units in the devices of the embodiments of this application can be combined, divided, and deleted according to actual needs.

[0103] In this application, for the description of the same or similar term concepts, technical solutions, and / or application scenarios, generally only the first detailed description is made. When repeated later, for the sake of brevity, it is generally not repeated. When understanding the technical solutions and other contents of this application, for the same or similar term concepts, technical solutions, and / or application scenarios that are not detailed later, reference can be made to the relevant detailed descriptions before.

[0104] In this application, the descriptions of various embodiments have their own focuses. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0105] The technical features of the technical solutions of this application can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope recorded in this application.

[0106] The above are only the preferred embodiments of this application, and do not limit the patent scope of this application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of this application.

Claims

1. An antenna assembly, characterized in that, Comprising at least two antenna units, a phase adjustment unit, and a filtering network; wherein, The antenna unit includes at least a first antenna unit and a second antenna unit arranged adjacent to each other; The phase adjustment unit is electrically connected to the first antenna unit and is configured to change the direction of the induced current generated in the second antenna unit when the first antenna unit operates in the operating frequency band; The filtering network is electrically connected between the first antenna unit and the second antenna unit and is configured to allow the induced current to flow in outside the operating frequency band to reduce the intensity of the induced current within the operating frequency band.

2. The antenna assembly according to claim 1, wherein, The first antenna unit includes a first radiator and a first signal source; the first radiator includes a first free end and a second free end, the first free end is electrically connected to the first signal source, and the second free end is electrically connected to the phase adjustment unit and the filtering network.

3. The antenna assembly according to claim 2, characterized in that, The phase adjustment unit includes a first capacitor, one end of the first capacitor is electrically connected to the second free end, and the other end of the first capacitor is grounded.

4. The antenna assembly according to claim 1, wherein The first antenna unit includes a first radiator and a first signal source; the first radiator includes a first free end and a second free end, the first signal source is electrically connected to the first radiator at a position close to the second free end and is located between the first free end and the second free end, the first free end and the second free end are respectively electrically connected to the phase adjustment unit, and the second free end is also electrically connected to the filtering network.

5. The antenna assembly according to claim 4, wherein The phase adjustment unit includes a first inductor and a second capacitor, one end of the first inductor is electrically connected to the second free end, the other end of the first inductor is grounded, one end of the second capacitor is electrically connected to the first free end, and the other end of the second capacitor is grounded.

6. The antenna assembly according to claim 3 or 5, characterized in that When the second antenna unit and the first antenna unit operate in the same operating frequency band, the second antenna unit includes a second radiator and a second signal source; the second radiator includes a third free end and a first grounding end, the third free end is electrically connected to the second signal source and the filtering network, and the first grounding end is grounded.

7. The antenna assembly according to claim 3, wherein The antenna assembly includes at least two of the filtering networks, and each filtering network corresponds to an operating frequency band of the second antenna unit; The second antenna unit includes a second radiator, a second signal source, and a matching tuning unit; the second radiator includes a third free end and a first grounding end, the third free end is electrically connected to the second signal source and the matching tuning unit, the matching tuning unit is electrically connected to the filtering network, and the first grounding end is grounded.

8. The antenna assembly according to claim 7, wherein The matching tuning unit includes a tuner and at least two ground branch matching fronts, one end of the tuner is electrically connected to the third free end, the other end of the tuner is electrically connected to the ground branch matching fronts; the filtering network is respectively electrically connected to the corresponding ground branch matching fronts.

9. The antenna assembly according to claim 1, wherein, The filtering network is a band-pass filtering network or a band-stop filtering network.

10. An intelligent terminal, characterized in that, Comprising the antenna assembly according to any one of claims 1 to 9.

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