Antennas, antenna modules and smart terminals

Abstract

The present application relates to an antenna, an antenna module and an intelligent terminal, wherein the antenna includes a radiator, a tuning unit and a switch unit, wherein the radiator is electrically connected to the reference ground of the intelligent terminal for receiving and transmitting antenna signals; the tuning unit is electrically connected to the radiator, the switch unit is electrically connected to the tuning unit, the tuning unit and the switch unit form an antenna matching network, and the radiator cooperates with the antenna matching network to receive and transmit antenna signals of different frequency bands. In the antenna of the present application, a switch unit and a tuning unit are arranged between the radiator and the radio frequency processing module. The processor controls the switch unit and the tuning unit to cooperate to form different antenna matching networks according to the frequency bands in which the antenna receives and transmits antenna signals, thereby enabling the antenna to receive and transmit antenna signals of more frequency bands, thereby broadening the bandwidth of the antenna.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna, an antenna module and a smart terminal. Background Art

[0002] With the continuous development of 5G technology, the number of antennas required by smart terminals and the bandwidth covered by these antennas have increased significantly. At the same time, the space required to arrange antennas within these terminals has become increasingly compact. Therefore, to accommodate more antennas within smart terminals, antenna miniaturization and broadband coverage are pressing challenges for the communications industry. Some solutions employ the addition of radiating branches to generate corresponding radiation modes, achieving frequency shifts and expanding bandwidth.

[0003] During the process of conceiving and implementing this application, the inventors discovered that there are at least the following problems: expanding the bandwidth by adding radiating branches will aggravate the problem of the antenna occupying more layout space in the smart terminal, which is not conducive to the antenna layout of the smart terminal.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] The present application provides an antenna, an antenna module and a smart terminal. The tuning unit and the switching unit cooperate to form different antenna matching networks, thereby enabling the antenna to receive and transmit antenna signals in more frequency bands, thereby effectively broadening the bandwidth of the antenna.

[0006] The present application provides an antenna that can be used in a smart terminal. The antenna includes a radiator, a tuning unit and a switch unit, wherein the radiator is electrically connected to a reference ground of the smart terminal for receiving and transmitting antenna signals; the tuning unit is electrically connected to the radiator, and the switch unit is electrically connected to the tuning unit. The tuning unit and the switch unit form an antenna matching network.

[0007] Optionally, the tuning unit cooperates with the switch unit to selectively form different antenna matching networks.

[0008] Optionally, the tuning unit includes a first capacitor, a second capacitor, a third capacitor and a fourth capacitor.

[0009] Optionally, the switch unit includes a first radio frequency interface and / or a second radio frequency interface.

[0010] Optionally, the first capacitor and the second capacitor are connected in series between the radiator and the radio frequency processing module of the smart terminal.

[0011] Optionally, the third capacitor is electrically connected between the radiator and the first RF interface.

[0012] Optionally, the fourth capacitor is electrically connected between the second RF interface and the RF processing module.

[0013] Optionally, the first end of the first capacitor is electrically connected to the radiator, the second end of the first capacitor is electrically connected to the first end of the second capacitor, and the second end of the second capacitor is electrically connected to the RF processing module.

[0014] Optionally, the first end of the third capacitor is electrically connected to the first end of the first capacitor and the radiator, and the second end of the third capacitor is electrically connected to the first RF interface.

[0015] Optionally, a first end of the fourth capacitor is electrically connected to the second RF interface, and a second end of the fourth capacitor is electrically connected to the second end of the second capacitor and the RF processing module.

[0016] Optionally, the tuning unit includes a first inductor and / or a second inductor.

[0017] Optionally, the switch unit includes a third radio frequency interface and / or a fourth radio frequency interface.

[0018] Optionally, the first inductor is electrically connected between the third RF interface and the reference ground.

[0019] Optionally, the second inductor is electrically connected between the fourth RF interface and the reference ground.

[0020] Optionally, the switch unit selectively turns on or off the first radio frequency interface and / or the second radio frequency interface of the switch unit to match the capacitor in the tuning unit to selectively obtain the antenna matching network.

[0021] Optionally, the switch unit selectively turns on or off the third RF interface and / or the fourth RF interface of the switch unit to match the inductor in the tuning unit to selectively obtain the antenna matching network.

[0022] Optionally, the capacitance values ​​of the third capacitor and the fourth capacitor are 0.

[0023] Optionally, the switch unit is a single-pole four-throw switch.

[0024] Optionally, the antenna further includes a feeding point, which is electrically connected to a radio frequency processing module of the smart terminal, and the radio frequency processing module transmits the antenna signal to the radiator through the feeding point.

[0025] Optionally, the antenna signals received and transmitted by the antenna cover frequency bands including 1.7 GHz-2.8 GHz and 3.3 GHz-5 GHz.

[0026] The present application also provides an antenna module, comprising at least one auxiliary antenna and any of the above antennas, wherein the antenna and the auxiliary antenna are respectively used to transmit and receive antenna signals of different frequency bands.

[0027] The present application also provides a smart terminal, comprising any of the above-mentioned antenna modules or any of the above-mentioned antennas, and a radio frequency processing module.

[0028] Optionally, the antenna or the antenna module is electrically connected to the radio frequency processing module.

[0029] Optionally, the radio frequency processing module is used to process antenna signals transmitted or received by the antenna or the antenna module.

[0030] Optionally, the radio frequency processing module is used to amplify and process antenna signals transmitted or received by the antenna or the antenna module.

[0031] Optionally, the smart terminal further includes an outer frame.

[0032] Optionally, the outer frame includes a first frame, a second frame, a third frame and a fourth frame.

[0033] Optionally, an area enclosed by the second frame, the third frame and the fourth frame is a reference ground of the smart terminal.

[0034] Optionally, the first frame includes the antenna.

[0035] Optionally, the outer frame constitutes a metal frame of the smart terminal.

[0036] Optionally, the first frame, the second frame, the third frame and the fourth frame are connected end to end in sequence, and the antenna is part of the first frame.

[0037] Optionally, the first frame includes a first sub-frame, a second sub-frame and a third sub-frame.

[0038] Optionally, the first sub-frame is connected to the second frame and is spaced apart from one end of the second sub-frame to form a first gap.

[0039] Optionally, the other end of the second sub-frame is spaced apart from the third sub-frame to form a second gap, and the other end of the third sub-frame is connected to the fourth frame.

[0040] Optionally, the antenna is the first sub-frame.

[0041] In summary, in the antenna, antenna module and smart terminal of the present application, a switch unit and a tuning unit are set between the radiator and the RF processing module. The processor controls the switch unit and the tuning unit to cooperate with each other to form different antenna matching networks according to the frequency band of the antenna receiving and transmitting antenna signals, thereby enabling the antenna to receive and transmit antenna signals in more frequency bands, thereby broadening the bandwidth of the antenna. On the other hand, only adjusting the main path matching of the smart terminal, that is, adjusting the main antenna of the smart terminal, will not affect the radiation frequency of the antenna, effectively ensuring the performance of the antenna. Furthermore, the performance and experience of the use of the smart terminal are improved to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0043] Figure 1 A schematic diagram of the structure of an intelligent terminal for implementing an embodiment of the present application;

[0044] Figure 2 A schematic diagram of the hardware structure of a smart terminal for implementing an embodiment of the present application;

[0045] Figure 3 A structural diagram of an antenna disclosed in an embodiment of the present application;

[0046] Figure 4 for Figure 3 A schematic diagram of the circuit structure of the switch unit and the tuning unit in the antenna shown;

[0047] Figure 5 for Figure 3 A schematic diagram of the specific circuit structure of the switch unit in the antenna shown;

[0048] Figure 6 A diagram showing the corresponding relationship between register values ​​of an antenna and an antenna matching network disclosed in an embodiment of the present application;

[0049] Figure 7 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x87;

[0050] Figure 8 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x69;

[0051] Figure 9This is the equivalent circuit diagram of the antenna matching network when the register value is 0x5A;

[0052] Figure 10 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x0F;

[0053] Figure 11 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x1E;

[0054] Figure 12 The S11 curve diagram of the antenna disclosed in the embodiment of this application under five antenna radiation modes;

[0055] Figure 13 This is a curve diagram of the radiation efficiency of the antenna disclosed in the embodiment of this application.

[0056] The purpose of this application, its features, and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and the accompanying text are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of this application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0057] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0058] It should be noted that, in this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. Optionally, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined based on their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0059] 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 used solely to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if," as used herein, may be interpreted as "upon," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the recited features, steps, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used herein, may be interpreted as inclusive, meaning any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”; and for another example, “A, B or C” or “A, B and / or C” means “any 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 a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0060] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0061] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0062] It should be understood that the specific embodiments described herein are intended only to explain the present application and are not intended to limit the present application. In the subsequent description, suffixes such as "module," "component," or "unit" used to represent elements are used solely to facilitate the description of the present application and have no specific meaning. Therefore, "module," "component," or "unit" may be used interchangeably.

[0063] With the continuous development of 5G technology, the number of antennas required by smart terminals and the bandwidth covered by antennas have increased significantly. At the same time, the space required for antenna layout within smart terminals has become increasingly compact. Therefore, to accommodate more antennas within smart terminals, antenna miniaturization and broadbandization are pressing challenges for the entire communications industry. In the current smart terminal market, most approaches achieve frequency shift and bandwidth expansion by adding radiating branches to generate corresponding radiation modes. However, this practice of expanding bandwidth through the addition of radiating branches exacerbates the problem of antennas occupying more space within smart terminals, hindering the antenna layout of smart terminals.

[0064] Based on this, this application hopes to provide an antenna solution that can solve the above-mentioned technical problems. The antenna of this solution includes a tuning unit and a switching unit, which can effectively adjust the main path matching of the antenna. The simple radiation mode switches to different antenna modes after passing through different antenna matching networks composed of the tuning unit and the switching unit, thereby greatly expanding the antenna bandwidth and meeting the performance index requirements.

[0065] It should be noted that in some implementations, 5G full-screen smart terminals mostly use laser direct structuring (LDS) or flexible printed circuit (FPC) as the antenna material, relying entirely on LDS or FPC for resonance. The antenna is not easy to radiate, and the routing positions of multiple antennas are often very close (determined by RF devices such as chips, path loss, and cost). The isolation between each antenna is poor, especially between antennas in the same frequency band, for example, Wi-Fi 2.4 / 5G antennas and Multi-Input Multi-Output (MIMO) Wi-Fi 2.4 / 5G antennas. This will inevitably affect consumers' experience with highly subjective frequency bands such as GPS / Wi-Fi. LDS is a 3D-MID (Three-Dimensional Molded Interconnect Device) production technology that utilizes specialized laser processing, injection molding, and electroplating processes. Its principle is to combine ordinary plastic components / circuit boards with the electrical interconnection and component support functions of a plastic housing, along with the shielding and antenna functions created by the integration of mechanical entities and conductive patterns, creating the so-called 3D-MID. Common methods for integrating antennas into smart terminals typically involve hot-melting metal sheets to the back of the device or directly attaching the metal sheet to the back of the device. LDS, however, allows the antenna to be laser-molded directly onto the outer frame of the device.

[0066] First embodiment

[0067] See also Figure 1 , Figure 1 A schematic diagram of a smart terminal structure for implementing an embodiment of the present application is shown in FIG. Figure 1 As shown, in the embodiment of the present application, the smart terminal 1000 may include at least an outer frame 200, a radio frequency (RF) unit 101 (see Figure 2 ) and processor 110. Optionally, the outer frame 200 may be made of metal, which constitutes a metal frame of the smart terminal 1000. The outer frame 200 may include at least a first frame 210, a second frame 220, a third frame 240, and a fourth frame 260. Optionally, the first frame 210, the second frame 220, the third frame 240, and the fourth frame 260 are connected end to end in sequence.

[0068] Optionally, the area enclosed by the second frame 220, the third frame 240, and the fourth frame 260 can partially serve as the reference ground 10 of the smart terminal 1000. The reference ground 10 can be used to return the current generated by the smart terminal 1000 to the power supply to ensure the normal and safe operation of the smart terminal 1000.

[0069] In the embodiment of the present application, the first frame 210 may include at least a first sub-frame 211, a second sub-frame 214, and a third sub-frame 217. Optionally, the first sub-frame 211 is connected to the second frame 220 and is spaced apart from one end of the second sub-frame 214 to form a first gap 215, that is, the first gap 215 is located between the first sub-frame 211 and the second sub-frame 214. The other end of the second sub-frame 214 is spaced apart from the third sub-frame 217 to form a second gap 218, that is, the second gap 218 is located between the second sub-frame 214 and the third sub-frame 217.

[0070] In the embodiment of the present application, the second sub-frame 214 is located between the first sub-frame 211 and the third sub-frame 217, and opposite ends of the second sub-frame 214 are connected to the first sub-frame 211 and the third sub-frame 217 to form the first gap 215 and the second gap 218, respectively. The other end of the third sub-frame 217 is connected to the fourth frame 260.

[0071] Optionally, the horizontal dimension (i.e., parallel to the third frame 240 in the embodiment of the present application) of the first gap 215 can be 1.5 mm. Optionally, the distance between the first sub-frame 211 and the second sub-frame 214 is 1.5 mm.

[0072] In an embodiment of the present application, the radio frequency unit 101 may be used to receive and transmit information or receive and send signals during a call. Optionally, the radio frequency unit 101 receives downlink information from the base station and transmits it to the processor 110 for processing; optionally, the radio frequency unit 101 is also used to send uplink data to the base station.

[0073] Optionally, the radio frequency unit 101 includes but is not limited to an antenna 100, a radio frequency processing module 60 (see Figure 4) and so on. The antenna 100 is electrically connected to the RF processing module 60. Optionally, the RF processing module 60 is electrically connected to the processor 110, and the processor 110 generates a signal source (Baseband, BB) and transmits the signal source to the RF processing module 60. The RF processing module 60 modulates and amplifies the signal source to obtain an antenna signal, and the RF processing module 60 transmits the antenna signal to the antenna 100. After receiving the antenna signal, the antenna 100 radiates to the outside world or other electronic devices. On the other hand, the antenna 100 receives an external antenna signal and transmits it to the RF processing module 60. The RF processing module 60 amplifies and demodulates the antenna signal and then transmits it to the processor 110 for use by the smart terminal 1000. Optionally, the communication function between the smart terminal 1000 and other electronic devices is realized.

[0074] Optionally, the radio frequency unit 101 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to GSM (Global System of Mobilecommunication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution) and 5G.

[0075] In the embodiment of the present application, the antenna 100 uses part of the metal frame of the smart terminal 1000 (ie, part of the outer frame 200) as the radiation structure of the antenna 100. Optionally, the antenna 100 uses the first sub-frame 211 as the radiation structure of the antenna 100.

[0076] In the embodiment of the present application, the first frame 210 further includes a connecting rib 219, and the second sub-frame 214 is connected to the reference ground 10 via the connecting rib 219. Optionally, the second sub-frame 214 and the third sub-frame 217 can serve as other radiating structures of the smart terminal 1000.

[0077] Optionally, in one embodiment, the first sub-frame 211 can serve as the main antenna radiation structure of the smart terminal 1000, and the second sub-frame 214 and the third sub-frame 217 can serve as auxiliary antenna radiation structures of the smart terminal 1000. The second sub-frame 214 and the third sub-frame 217 are coupled through the second slot 218 to form different radiation modes. Furthermore, the first sub-frame 211, the second sub-frame 214, and the third sub-frame 217 are used to receive and transmit antenna signals of different frequency bands to achieve communication with the outside world.

[0078] Optionally, the smart terminal may be implemented in various forms. For example, the smart terminal described in this application may include smart terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0079] The subsequent description will be made using a smart terminal as an example. It will be understood by those skilled in the art that, in addition to components specifically used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed-type terminals.

[0080] Alternatively, as Figure 2 As shown, in the embodiment of the present application, the smart terminal 1000 may further include: 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, and a power supply 111. Those skilled in the art will understand that Figure 2 The structure of the smart terminal 1000 shown in the figure does not constitute a limitation on the smart terminal 1000. The smart terminal 1000 may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently. Figure 2 Make a detailed introduction.

[0081] Wi-Fi is a short-range wireless transmission technology. The smart terminal can help users receive and send emails, browse web pages and access streaming media through the WiFi module 102. It provides users with wireless broadband Internet access. Figure 2 The WiFi module 102 is shown, but it is understandable that it is not an essential component of the smart terminal and can be omitted as needed without changing the essence of the invention.

[0082] The audio output unit 103 can convert audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the smart terminal 1000 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Furthermore, the audio output unit 103 can also provide audio output related to a specific function performed by the smart terminal 1000 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, or the like.

[0083] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the GPU 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the RF unit 101 or the WiFi module 102. The microphone 1042 may receive sound (audio data) in operating modes such as a phone call mode, a recording mode, and a voice recognition mode, and may process such sound into audio data. In the phone call mode, the processed audio (voice) data may be converted into a format that can be transmitted to a mobile communication base station via the RF unit 101. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0084] The smart terminal 1000 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 smart terminal 1000 is moved to the ear. As a type 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. It can be used for applications that recognize 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 can be configured on the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described in detail here.

[0085] 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, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0086] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the smart 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 user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other 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 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch direction and detects the signal caused by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 110. It can also receive commands sent by the processor 110 and execute them. Optionally, the touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may further 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 keys, etc.), a trackball, a mouse, a joystick, etc., and the specifics are not limited here.

[0087] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. The processor 110 then provides a corresponding visual output on the display panel 1061 according to the type of touch event. Figure 2 In the figure, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the smart terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the smart terminal, which is not limited here.

[0088] The interface unit 108 serves as an interface through which at least one external device can be connected to the smart terminal 1000. 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 headphone port, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from the external device and transmit the received input to one or more components within the smart terminal 1000, or may be used to transmit data between the smart terminal 1000 and the external device.

[0089] Memory 109 can be used to store software programs and various data. Memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store an operating system and at least one application required for a function (such as a sound playback function or an image playback function); the data storage area may store data generated based on the use of the mobile phone (such as audio data, a phone book, etc.). Optionally, memory 109 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0090] Processor 110 is the control center of the smart terminal, connecting all components of the smart terminal using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 109 and accessing data stored in memory 109, it executes various functions of the smart terminal and processes data, thereby providing overall monitoring of the smart terminal. Processor 110 may include one or more processing units; preferably, processor 110 may integrate an application processor, registers, and a modem processor. Optionally, the application processor primarily handles the operating system, user interface, and application programs, the modem processor primarily handles wireless communications, and the registers are used to store data used to perform arithmetic and logical operations. It is understood that the modem processor may not be integrated into processor 110.

[0091] The smart terminal 1000 may also include a power supply 111 (such as a battery) to supply power to each component. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0092] although Figure 2 Not shown, the smart terminal 1000 may also include a Bluetooth module, etc., which will not be described in detail here.

[0093] It is understandable that the smart terminal 1000 may be an electronic device including functions such as an e-book, a personal digital assistant (PDA) and / or a music player, such as a smart phone, a tablet computer, a wearable electronic device with wireless communication function (such as a smart watch), etc. The above-mentioned electronic device may also be other electronic devices, such as a laptop computer (Laptop) with a touch-sensitive surface (such as a touch panel), etc. In some embodiments, the electronic device may have a communication function, that is, it may establish communication with the network through 2G (second generation mobile phone communication technology specifications), 3G (third generation mobile phone communication technology specifications), 4G (fourth generation mobile phone communication technology specifications), 5G (fifth generation mobile phone communication technology specifications) or W-LAN (wireless local area network) or a communication method that may appear in the future. For the sake of simplicity, this embodiment of the present application is not further limited.

[0094] Second embodiment

[0095] Please also refer to Figure 3 , Figure 3This is a structural diagram of an antenna disclosed in an embodiment of the present application. In an embodiment of the present application, the antenna 100 is applied to the above-mentioned smart terminal 1000, which may include at least a radiator 20, a tuning unit 30 and a switch unit 40. Optionally, the radiator 20 is electrically connected to the reference ground 10 of the smart terminal 1000 for receiving and transmitting antenna signals. The tuning unit 30 is electrically connected to the radiator 20 and the RF processing module 60 of the smart terminal, and the switch unit 40 is electrically connected to the tuning unit 30. The tuning unit 30 cooperates with the switch unit 40 to form different antenna matching networks, that is, to selectively form different radiation paths.

[0096] In the embodiment of the present application, the tuning unit 30 cooperates with the switch unit 40 to form different antenna matching networks, selectively obtaining different antenna radiation modes. This allows the bandwidth of the antenna 100 to be broadened without adding additional radiating branches or antennas. Therefore, the antenna 100 not only has a simple structure and reduced manufacturing difficulty, but also effectively solves the problem of expanding the bandwidth of the smart terminal 1000 while meeting antenna performance requirements.

[0097] Optionally, the antenna 100 can be set at the upper right corner of the smart terminal 1000, or at other positions of the smart terminal 1000, which can be determined according to actual conditions, and this application does not impose any specific restrictions on this.

[0098] Optionally, the tuning unit 30 may be electrically connected to the radiator 20 by means of a spring or the like, and this application does not impose any specific limitation on this.

[0099] In the embodiment of the present application, the radiator 20 is fixedly connected to the second frame 220 of the smart terminal 1000, and the second frame 220 is electrically connected to the reference ground 10. Optionally, the radiator 20 is fixedly connected to the second frame 220. Optionally, the radiator 20 is electrically connected to the reference ground 10 through the second frame 220.

[0100] In an embodiment of the present application, the radiator 20 can be the first sub-frame 211 of the first frame 210 in the smart terminal 1000. Optionally, in an embodiment of the present application, the second sub-frame 214 and the third sub-frame 217 can serve as other radiation structures / radiators of the smart terminal 1000.

[0101] Optionally, the radiator 20 can serve as the main antenna radiation structure of the smart terminal 1000, and the second sub-frame 214 and the third sub-frame 217 can serve as the auxiliary antenna radiation structure of the smart terminal 1000. The second sub-frame 214 and the third sub-frame 217 are coupled through the second gap 218 to form different radiation modes. Optionally, the radiator 20, the second sub-frame 214 and the third sub-frame 217 are used to receive and transmit antenna signals of different frequency bands to realize communication with the outside world. Optionally, the antenna 100 can serve as the main antenna of the smart terminal 1000, and the antenna structure formed by the second sub-frame 214 and the third sub-frame 217 can serve as the auxiliary antenna of the smart terminal 1000.

[0102] Optionally, the radiator 20 may have a preset gap with other radiating structures / radiators. Specifically, the preset gap may be the first gap 215, and the lateral gap size of the preset gap may be 1.5 mm. Optionally, the size of the preset gap may be adjusted according to the actual functional requirements of the antenna 100, and this application does not impose any specific restrictions on this.

[0103] In the embodiment of the present application, the antenna 100 may further include a feed point 50, which is electrically connected to a radio frequency processing module 60. The radio frequency processing module 60 transmits the antenna signal to the radiator 20 and other radiating structures / radiators through the feed point 50. The radiator 20 receives the antenna signal and radiates it to the outside world or other electronic devices.

[0104] In an embodiment of the present application, the switch unit 40 can be electrically connected to the processor 110 of the smart terminal 1000. The processor 110 includes a register (not shown), and the switch unit 40 is configured to adjust the impedance of the radiator 20 accordingly based on a register value stored in the register. Optionally, the tuning unit 30 cooperates with the switch unit 40 to form an adjustable antenna matching network for the antenna 100, which is configured to selectively adjust the impedance of the antenna 100, thereby widening the bandwidth of the antenna 100.

[0105] Optionally, when the antenna 100 receives and transmits antenna signals of different frequency bands, different register values ​​correspond to the antenna 100. That is, different modes of the antenna 100 correspond to different register values.

[0106] Please also refer to Figure 4 and Figure 5 , Figure 4 for Figure 3 The circuit structure diagram of the switch unit and the tuning unit in the antenna is shown in FIG. Figure 5 for Figure 3Schematic diagram of the specific circuit structure of the switch unit in the antenna shown.

[0107] like Figure 4 As shown, in the embodiment of the present application, the tuning unit 30 is electrically connected to the radiator 20, the switch unit 40, and the RF processing module 60. The tuning unit 30 may include at least a first capacitor 31 and a second capacitor 32. The switch unit 40 may include at least a first RF interface 43 and a second RF interface 44.

[0108] Optionally, the first capacitor 31 and the second capacitor 32 are connected in series between the radiator 20 and the RF processing module 60, and any position on the line between the first capacitor 31 and the second capacitor 32 serves as a switch connection terminal 36, and the switch connection terminal 36 is electrically connected to the radiation interface 41 of the switch unit 40.

[0109] Any position on the line connecting the first capacitor 31 and the radiator 20 serves as a radiation connection terminal 34, and any position on the line connecting the second capacitor 32 and the RF processing module 60 serves as a RF connection terminal 37. Optionally, the first end of the first capacitor 31 is electrically connected to the radiator 20, the second end of the first capacitor 31 is electrically connected to the first end of the second capacitor 32, the second end of the second capacitor 32 is electrically connected to the RF processing module 60, and any position on the line connecting the second end of the first capacitor 31 and the first end of the second capacitor 32 serves as the switch connection terminal 36.

[0110] In the embodiment of the present application, the switch unit 40 conducts between the radiator 20 and the RF processing module 60 , and the switch unit 40 cooperates with the first capacitor 31 and the second capacitor 32 to obtain the antenna matching network of the antenna 100 .

[0111] In other embodiments of the present application, the tuning unit 30 further includes a third capacitor 33, and the switch unit 40 further includes a first RF interface 43. Optionally, the third capacitor 33 is electrically connected between the radiation connection terminal 34 and the first RF interface 43. Optionally, a first end of the third capacitor 33 is electrically connected to the first end of the first capacitor 31 and the radiator 20, and a second end of the third capacitor 33 is electrically connected to the first RF interface 43.

[0112] In the embodiment of the present application, the switch unit 40 selectively turns on or off the first RF interface 43 to selectively access the third capacitor 33 of the tuning unit 30 to obtain different antenna matching networks of the antenna 100 .

[0113] In other embodiments of the present application, the tuning unit 30 further includes a fourth capacitor 35, and the switch unit 40 further includes a second RF interface 44. Optionally, the fourth capacitor 35 is electrically connected between the second RF interface 44 and the RF connection terminal 37. Optionally, a first end of the fourth capacitor 35 is electrically connected to the second RF interface 44, and a second end of the fourth capacitor 35 is electrically connected to the second end of the second capacitor 32 and the RF processing module 60.

[0114] In an embodiment of the present application, the switch unit 40 selectively turns on or off the first RF interface 43 and / or the second RF interface 44 to selectively access at least one of the third capacitor 33 and the fourth capacitor 35 of the tuning unit 30 to obtain different antenna matching networks of the antenna 100.

[0115] In other embodiments of the present application, the tuning unit 30 includes a first inductor 38 and a second inductor 39, and the switch unit 40 includes a third RF interface 45 and a fourth RF interface 46. Optionally, the first inductor 38 is electrically connected between the third RF interface 45 and the reference ground 10, and the second inductor 39 is electrically connected between the fourth RF interface 46 and the reference ground 10.

[0116] In other embodiments of the present application, the switch unit 40 selectively turns on or off the third RF interface 45 and / or the fourth RF interface 46 to selectively access at least one of the first inductor 38 and the second inductor 39 of the tuning unit 30, thereby correspondingly obtaining different antenna matching networks of the antenna 100.

[0117] In other embodiments of the present application, the tuning unit 30 may include the first capacitor 31, the second capacitor 32, the third capacitor 33, the fourth capacitor 35, the first inductor 38, and the second inductor 39. The switch unit 40 may include the first RF interface 43, the second RF interface 44, the third RF interface 45, and the fourth RF interface 46. Optionally, the switch unit 40 may be a single-pole four-throw switch (SP4T). For specific connection relationships, refer to other embodiments and are not repeated here.

[0118] Optionally, when only the first RF interface 43 is turned on, the first capacitor 31, the second capacitor 32 and the third capacitor 33 form an antenna matching network, that is, the third capacitor 33 is connected to the first capacitor 31 and the second capacitor 32 to adjust the antenna matching network of the antenna 100.

[0119] Optionally, when only the second RF interface 44 is turned on, the first capacitor 31, the second capacitor 32 and the fourth capacitor 35 form an antenna matching network, that is, the fourth capacitor 35 is connected to the first capacitor 31 and the second capacitor 32 to adjust the antenna matching network of the antenna 100.

[0120] Optionally, when only the first RF interface 43 and the second RF interface 44 are turned on, the first capacitor 31, the second capacitor 32, the third capacitor 33 and the fourth capacitor 35 form an antenna matching network, that is, the third capacitor 33 and the fourth capacitor 35 are simultaneously connected to the first capacitor 31 and the second capacitor 32, for adjusting the antenna matching network of the antenna 100.

[0121] Optionally, the aforementioned three antenna matching networks are formed by different cooperation between the switching unit 40 and the tuning unit 30. It can be understood that the first RF interface 43, the second RF interface 44, the third RF interface 45 and the fourth RF interface 46 can have 16 conduction combinations, and then cooperate with the tuning unit to form the 16 antenna matching networks of the antenna.

[0122] like Figure 5 As shown, the switching unit 40 can also include at least a logic control terminal 47, which is used to control the selective conduction of different radio frequency interfaces and cooperate with the tuning unit 30 to adjust the radiator 20 to have different impedances, thereby enabling the radiator 20 to receive and transmit antenna signals of multiple frequency bands.

[0123] In an embodiment of the present application, the logic control terminal 47 may include a power input port 471, an input / output port 472, a data port 473, and a clock port 474. The power input port 471 is connected to the power supply terminal, and the logic control terminal 47 receives a power signal from the power supply terminal. The input / output port 472 is used to connect to the radiator 20 or the RF processing module 60, so that when the switch unit 40 corresponds to the corresponding register value, the radiator 20 and the RF processing module 60 are connected accordingly. The data port 473 and the clock port 474 cooperate to control the switch unit 40 to selectively turn on different RF interfaces. Optionally, the switch unit 40 cooperates with the tuning unit 30 to form a variable antenna matching network, which is conducive to expanding the bandwidth of the antenna 100 without affecting the efficiency of the antenna 100.

[0124] Optionally, the data port 473 and the clock port 474 are electrically connected to the processor 110, and the switch unit 40 receives control signals transmitted by the processor 110 from the data port 473 and the clock port 474, thereby enabling the switch unit 40 and the tuning unit 30 to form a variable antenna matching network.

[0125] Optionally, taking the example of the switching unit 40 including the first RF interface 43, the second RF interface 44, the third RF interface 45 and the fourth RF interface 46, and the tuning unit 30 including the first capacitor 31, the second capacitor 32, the third capacitor 33 and the fourth capacitor 35, the switching unit 40 turns on different RF interfaces according to the register value, and cooperates with the tuning unit 30 to form different antenna modes.

[0126] Please also refer to Figure 6 , Figure 6 This is a diagram showing the corresponding relationship between the register value of an antenna and the antenna matching network disclosed in an embodiment of the present application. Figure 6 As shown, in the embodiment of the present application, the switch unit 40 turns on different RF interfaces according to the register value, and cooperates with the tuning unit 30 to form 16 different paths, that is, to form 16 different antenna modes. The 16 antenna modes correspond to the radiator 20 receiving and transmitting antenna signals in 16 different frequency bands. Optionally, the 16 antenna frequency bands cover 1.7GHz-2.8GHz and 3.3GHz-5GHz, that is, they meet the intelligent terminal 1000's requirements for the antenna 100's medium frequency, high frequency, and ultra-high frequency operation.

[0127] Please also refer to Figures 7 to 11 , Figure 7 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x87. Figure 8 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x69. Figure 9 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x5A. Figure 10 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x0F. Figure 11 This is the equivalent circuit diagram of the antenna matching network when the register value is 0x1E.

[0128] Alternatively, as Figure 7As shown, when the register value is 0x87, the switch unit 40 conducts between the tuning unit 30 and the second RF interface 44, the third RF interface 45, and the fourth RF interface 46. Optionally, the antenna matching network is a matching circuit formed by electrically connecting the first capacitor 31 between the radiator 20 and the RF processing module 60, and connecting the first inductor 38 and the second inductor 39 in parallel between the switch connection terminal 36 and the reference ground 10. The antenna matching network is a circuit in which the second capacitor 32 is short-circuited by the fourth capacitor 35, and the third capacitor 33 is not connected to the path.

[0129] Alternatively, as Figure 8 As shown, when the register value is 0x69, the switch unit 40 connects the tuning unit 30 to the first RF interface 43 and the third RF interface 45. Optionally, the antenna matching network comprises the second capacitor 32 electrically connected between the radiator 20 and the RF processing module 60, and the first inductor 38 electrically connected between the switch connection terminal 36 and the reference ground 10. The antenna matching network is such that the first capacitor 31 is short-circuited by the third capacitor 33, and the fourth capacitor 35 and the second inductor 39 are disconnected.

[0130] Alternatively, as Figure 9 As shown, when the register value is 0x5A, the switch unit 40 connects the tuning unit 30 to the first RF interface 43 and the fourth RF interface 46. Optionally, the antenna matching network comprises the second capacitor 32 electrically connected between the radiator 20 and the RF processing module 60, and the second inductor 39 electrically connected between the switch connection terminal 36 and the reference ground 10. The antenna matching network is such that the first capacitor 31 is short-circuited by the third capacitor 33, and the fourth capacitor 35 and the first inductor 38 are disconnected.

[0131] Alternatively, as Figure 10 As shown, when the register value is 0x0F, the switch unit 40 connects the tuning unit 30 to the first RF interface 43, the second RF interface 44, the third RF interface 45, and the fourth RF interface 46. Optionally, the antenna matching network comprises the first inductor 38 and the second inductor 39 connected in parallel between the switch connection terminal 36 and the reference ground 10. The antenna matching network is such that the first capacitor 31 is short-circuited by the third capacitor 33, and the second capacitor 32 is short-circuited by the fourth capacitor 35.

[0132] Alternatively, as Figure 11As shown, when the register value is 0x1E, the switch unit 40 connects the tuning unit 30 to the first RF interface 43, the second RF interface 44, and the fourth RF interface 46. Optionally, the antenna matching network comprises the second inductor 39 electrically connected between the switch connection terminal 36 and the reference ground 10. The antenna matching network is such that the first capacitor 31 is short-circuited by the third capacitor 33, the second capacitor 32 is short-circuited by the fourth capacitor 35, and the first inductor 38 is disconnected.

[0133] Optionally, the antenna matching networks corresponding to the above five register values ​​are only examples. The switch unit 40 provided in this application can realize 16 antenna matching networks including the above five antenna matching networks by adjusting the on and off of the four RF ports. Optionally, the radiator 20 can have 16 different impedances, thereby being able to receive and transmit antenna signals in 16 different frequency bands. Optionally, the 16 antenna frequency bands cover 1.7GHz-2.8GHz and 3.3GHz-5GHz, that is, meet the working requirements of the smart terminal 1000 for the medium frequency, high frequency, and ultra-high frequency of the antenna 100.

[0134] Optionally, the switch unit 40 of the present application may also include one, two, three or four RF interfaces, and adjust the on and off of the RF interfaces to obtain other numbers of antenna matching networks, and the present application does not impose any specific restrictions on this.

[0135] In an embodiment of the present application, the capacitance value of the first capacitor 31 of the tuning unit 30 can be 2.7 picofarads (PF), the capacitance value of the second capacitor 32 can be 0.8 picofarads (PF), and the capacitance values ​​of the third capacitor 33 and the fourth capacitor 35 can both be zero. The inductance value of the first inductor 38 is 5 nanohenries (NH), and the inductance value of the second inductor 39 is 8 nanohenries (NH). Optionally, the capacitance values ​​of the aforementioned capacitors and the inductance values ​​of the inductors can be selected from other parameters according to actual conditions and functions, and this application does not impose specific restrictions on this.

[0136] See also Figure 12 and Figure 13 , Figure 12 The S11 curve diagram of the antenna disclosed in the embodiment of this application under five antenna radiation modes is shown in FIG. Figure 13 This is a curve diagram of the radiation efficiency of the antenna disclosed in the embodiment of this application. Figure 12 As shown, STATE1, STATE2, STATE3, STATE4 and STATE5 shown in the figure correspond to the S11 curves under the above five antenna radiation modes respectively.

[0137] Under the five antenna radiation modes, the input reflection coefficient (S11) of the radiator 20 for receiving and transmitting antenna signals in the corresponding antenna matching network meets industry specifications. Furthermore, by adopting different antenna matching networks, the market demand for wider bandwidth is met, effectively widening the bandwidth of the antenna 100 while ensuring the performance of the antenna 100.

[0138] like Figure 13 As shown, the radiation efficiency of the antenna 100 after improvement by the technical solution provided in the embodiment of the present application is at a reasonable value, and does not affect the efficiency of the antenna 100 in radiating or receiving signals.

[0139] Third embodiment

[0140] Please continue reading Figure 2 and Figure 3 Based on the same inventive concept, this application also provides an antenna module 300. The antenna module 300 includes the aforementioned antenna 100 and at least one auxiliary antenna 301. The antenna 100 and the auxiliary antenna 301 are spaced apart and are configured to transmit and receive antenna signals in different frequency bands, respectively. Optionally, the antenna 100 and the at least one auxiliary antenna 301 may each comprise a metal frame of the smart terminal 1000.

[0141] Optionally, the antenna 100 is the first sub-frame 211, and the second sub-frame 214 and the third sub-frame 217 each serve as the auxiliary antenna 301. A gap should be left between the radiator 20 of the antenna 100 and the auxiliary antenna 301. The gap between the radiator 20 and the auxiliary antenna 301 can be the second gap 218.

[0142] In order to clearly illustrate the antenna module 300 , the antenna module 300 including two auxiliary antennas 301 is taken as an example for description.

[0143] In an embodiment of the present application, the first sub-frame 211 serves as the radiation structure of the antenna 100, and the second sub-frame 214 and the third sub-frame 217 can respectively serve as the two auxiliary antennas 301, that is, the second sub-frame 214 and the third sub-frame 217 can respectively serve as the first auxiliary antenna and the second auxiliary antenna.

[0144] Optionally, the antenna 100 serves as the main antenna radiating structure of the smart terminal 1000, and the two auxiliary antennas 301 serve as auxiliary antenna radiating structures of the smart terminal 1000. The two auxiliary antennas 301 couple through the second slot 218 to form different radiation modes. Furthermore, the antenna 100 and the two auxiliary antennas 301 are used to receive and transmit antenna signals in different frequency bands to achieve communication with the outside world.

[0145] Fourth embodiment

[0146] Please continue reading Figure 2 and Figure 4 Based on the same inventive concept, the present application also provides a smart terminal 1000, which may include a radio frequency processing module 60 and the aforementioned antenna module 300. Optionally, the antenna and the auxiliary antenna are both electrically connected to the radio frequency processing module. The radio frequency processing module is used to amplify and process antenna signals for transmission by the antenna module, or to amplify and process antenna signals received by the antenna module for use by the smart terminal.

[0147] In other embodiments of the present application, the smart terminal 1000 may include a RF processing module 60 and the above-mentioned antenna 100, the antenna 100 is electrically connected to the RF processing module 60, and the RF processing module 60 is used to amplify or modulate and demodulate RF signals for reception and transmission by the antenna 100.

[0148] The smart terminal 1000 provided by the embodiment of the present invention includes but is not limited to Or a terminal with another operating system, such as a mobile phone. It can also be another terminal, such as a laptop or tablet computer with a touch-sensitive surface (e.g., a touch screen display and / or a touch pad).

[0149] In summary, in the antenna 100, antenna module 300 and smart terminal 1000 of the present application, a switch unit 40 and a tuning unit 30 are set between the radiator 20 and the RF processing module 60. The processor 110 controls the switch unit 40 and the tuning unit 30 to cooperate with each other to form different antenna matching networks according to the frequency bands of the antenna 100 receiving and transmitting antenna signals, thereby enabling the antenna 100 to receive and transmit antenna signals of more frequency bands, thereby broadening the bandwidth of the antenna 100. On the other hand, only adjusting the main path matching of the smart terminal 1000, that is, adjusting the main antenna of the smart terminal 1000, will not affect the radiation frequency of the antenna 100, effectively ensuring the performance of the antenna 100. Furthermore, the performance and experience of the use of the smart terminal 1000 are improved to a certain extent.

[0150] It is understood that the above scenarios are merely examples and do not limit the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, those skilled in the art will appreciate that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application will also be applicable to similar technical problems.

[0151] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0152] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0153] In this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0154] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0155] The various technical features of the technical solution of this application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0156] It should be understood that the application of this application is not limited to the above examples. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the scope of protection of the claims appended to this application. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An antenna, characterized in that: including a radiator, a tuning unit and a switch unit; The radiator is electrically connected to the reference ground of the smart terminal and is used to receive and transmit antenna signals; The tuning unit is electrically connected to the radiator, the switch unit is electrically connected to the tuning unit, the tuning unit and the switch unit form an antenna matching network, and the radiator cooperates with the antenna matching network to receive and transmit antenna signals of different frequency bands; The tuning unit includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, and a second inductor; the switching unit includes a first radio frequency interface, a second radio frequency interface, a third radio frequency interface, and a fourth radio frequency interface; The first capacitor and the second capacitor are connected in series between the radiator and the radio frequency processing module of the smart terminal; The third capacitor is electrically connected between the radiator and the first RF interface; The fourth capacitor is electrically connected between the second RF interface and the RF processing module; The first end of the first capacitor is electrically connected to the radiator, the second end of the first capacitor is electrically connected to the first end of the second capacitor, and the second end of the second capacitor is electrically connected to the RF processing module; The first end of the third capacitor is electrically connected to the first end of the first capacitor and the radiator, and the second end of the third capacitor is electrically connected to the first RF interface; A first end of the fourth capacitor is electrically connected to the second RF interface, and a second end of the fourth capacitor is electrically connected to the second end of the second capacitor and the RF processing module; The first inductor is electrically connected between the third RF interface and the reference ground; The second inductor is electrically connected between the fourth RF interface and the reference ground; The switch unit selectively turns on or off the first RF interface and / or the second RF interface of the switch unit to match the capacitor in the tuning unit to selectively obtain the antenna matching network; or, The switch unit selectively turns on or off the third radio frequency interface and / or the fourth radio frequency interface of the switch unit to match the inductor in the tuning unit, so as to selectively obtain the antenna matching network.

2. The antenna according to claim 1, wherein The antenna further includes a feeding point, which is electrically connected to a radio frequency processing module of the smart terminal. The radio frequency processing module transmits the antenna signal to the radiator through the feeding point.

3. An antenna module, characterized in that: It comprises at least one auxiliary antenna and the antenna according to claim 1 or 2, wherein the antenna and the auxiliary antenna are respectively used for transmitting and receiving antenna signals of different frequency bands.

4. An intelligent terminal, characterized in that: It comprises the antenna module according to claim 3 or the antenna according to claim 1 or 2, and a radio frequency processing module; The antenna or the antenna module is electrically connected to the radio frequency processing module, and the radio frequency processing module is used to process antenna signals transmitted or received by the antenna or the antenna module.

5. The intelligent terminal according to claim 4, wherein: The smart terminal further includes an outer frame, the outer frame includes a first frame, and the first frame includes the antenna.

6. The intelligent terminal according to claim 5, wherein: The first frame includes a first sub-frame, a second sub-frame and a third sub-frame, the first sub-frame is connected to the second frame, and is spaced apart from one end of the second sub-frame to form a first gap; and / or, The other end of the second sub-frame is spaced apart from the third sub-frame to form a second gap, and the other end of the third sub-frame is connected to the fourth frame.

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